CN120614997A

CN120614997A - Active bending sheath uroscope and anti-blocking rigid uroscope

Info

Publication number: CN120614997A
Application number: CN202480006508.4A
Authority: CN
Inventors: 方立; 程跃
Original assignee: First Affiliated Hospital Of Ningbo University
Current assignee: First Affiliated Hospital Of Ningbo University
Priority date: 2024-09-11
Filing date: 2024-09-11
Publication date: 2025-09-09

Abstract

The active bending sheath type urinary soft endoscope (1) comprises an active bending sheath (20), wherein the active bending sheath (20) comprises a bendable sheath main body (21), a control handle (22) connected to the rear end of the bendable sheath main body (21) and provided with a connecting channel (24), and a soft endoscope main body (30), the soft endoscope main body (30) comprises a soft endoscope inner core (31) and a soft endoscope handle (32) connected to the rear end of the soft endoscope inner core (31), the soft endoscope inner core (31) is suitable for being placed in the connecting channel (24), the active bending sheath (20) is sleeved outside the soft endoscope main body (30), the bendable sheath main body (21) is sleeved with the soft endoscope inner core (31), the control handle (22) is sleeved with the soft endoscope handle (32), and the bendable sheath main body (21) is suitable for bending to drive the soft endoscope inner core (31) to bend.

Description

Actively bending sheath type urinary soft mirror and anti-blocking urinary hard mirror

Technical Field

The invention relates to the technical field of medical instruments, in particular to an active bending sheath type urinary soft mirror and an anti-blocking urinary hard mirror.

Background

Urinary calculus is a common disease of urinary system, the global incidence rate is 1% -20%, the new incidence rate is 150-200/10 ten thousand people, 25% of the urinary calculus needs hospitalization, and the urinary calculus is the most common.

In the traditional treatment method, the ureteroscope technology gradually becomes a main method for treating the upper urinary tract urinary calculus, and due to the flexibility of the lens body, the ureteroscope can directly reach renal pelvis and renal calyx through urethra, and has the advantages of small wound, less complications, short hospitalization time and the like.

However, the traditional ureteroscope has some defects, the stone removing and taking efficiency in the traditional ureteroscope operation is low, one stone needs to be grabbed out through the stone sleeving basket, most of stones need to be discharged by patients, and the stone discharging effect is not exact. And the traditional ureter soft lens equipment is very expensive and the maintenance price is very high, so that the popularization and the use of the ureter soft lens are affected.

Ureteroscopes are one of the most commonly used endoscopes in urology clinic, and can be divided into two main categories according to their own characteristics, namely hard ureteroscopes and soft ureteroscopes, wherein the hard ureteroscopes can be divided into hard ureteroscopes and semi-hard ureteroscopes. The vacuum interval columnar lenses are arranged in the early ureter hard lens metal shell, the rigidity of the lens body is very strong, the inner columnar lenses are easy to break due to slight bending, and the display effect is influenced. The traditional ureteroscope uses optical fibers to replace a cylindrical lens, so that the stainless steel lens body can have certain elasticity, is convenient for operation, is not easy to damage, and is called as a semi-rigid ureteroscope. Because the traditional ureteroscope body is thick and easy to damage, the traditional ureteroscope body basically exits from the market, and the traditional ureteroscope generally refers to a semi-rigid ureteroscope. The length, diameter, construction and application of the ureteroscope are also each featured in order to accommodate different diagnostic purposes.

The traditional ureteroscope has more problems in the operation process as follows:

The surface of a traditional ureteroscope is not provided with a hydrophilic coating, the structure of the traditional ureteroscope is thin before and thick after, and the structure of the traditional ureteroscope is thick below and thin after, in the operation process that the traditional ureteroscope is inserted into a patient ureter in a retrograde way, the rear end of the traditional ureteroscope is clamped at the lower section of the ureter to easily cause the lens holding, and the serious patient causes ureter fracture and avulsion and needs to cut the kidney.

Conventional ureteral hard lenses have only one working channel for the perfusion of fluids and placement of lithotripsy tools. In the lithotripsy process, the perfusate is directly injected into the kidney through the ureter, if the pressure in the kidney is increased, the perfusate can flow back through the gap between the ureteroscope and the ureter, if the ureter is thinner, the perfusate is completely injected into the kidney without gaps between the ureteroscope and the ureter, and the perfusate is absorbed into blood through the back flow of the renal tubule and the lymphatic vessel, so that water poisoning can be caused, and if bacteria exist in urine, bacteremia and infectious shock are easily caused, and life is endangered. Rapid pressure increases even cause bleeding from the kidneys to rupture. Because the liquid reflux speed is slow when the ureteroscope rubbles, the operation vision is influenced by the accumulation of rubble powder, and the rubble efficiency is low. Meanwhile, as the flow of the perfusion liquid in unit time is small, the heat of laser lithotripte is easy to gather, the local water temperature rises to 650-80 ℃, a 'water boiling ureter' is formed, the long-term ureter is caused to be narrow, and the treatment is very troublesome.

For stones wrapped by polyps, the traditional ureteroscope cannot push away the broken stones of the polyps, and in the process of striking the polyps, the ureter is easily and directly damaged, and ureter perforation and stenosis are artificially caused.

Disclosure of Invention

An advantage of the present invention is that it provides an actively curved sheath-type flexible urinary scope that can be discharged through an aspiration channel after breaking up stones, thereby increasing the drainage space of the aspiration channel without affecting the function of the stones and facilitating the drainage of the stones.

Another advantage of the present invention is that it provides an actively curved sheath-type flexible urinary mirror, wherein the actively curved sheath of the actively curved sheath-type flexible urinary mirror can actively curve, and the direction and angle of the curve can be adjusted, and the actively curved sheath curve drives the flexible mirror body to curve, so that stones at dead angles can be found under visual conditions, and the stone breaking effect is better.

Another advantage of the present invention is that it provides an actively curved sheath flexible urinary scope, wherein the actively curved sheath of the actively curved sheath flexible urinary scope and the flexible scope body are rotatably fixed to each other to control the length of the flexible scope body extending from the front end of the actively curved sheath for better advancement of the scope and lithotripsy.

Another advantage of the present invention is that it provides an actively curved sheath urological soft scope into which an introducer sheath of the actively curved sheath urological soft scope may be placed, the introducer sheath comprising a wedge-shaped tip and having a stiffness suitable for supporting the soft actively curved sheath into the predetermined lesion.

Another advantage of the present invention is that it provides an actively curved sheath flexible urinary scope that can withdraw the flexible scope body from the connection channel of the actively curved sheath when a blockage occurs, using the entire connection channel for removing urinary calculus, solving the blockage situation.

Another advantage of the present invention is that it provides an actively curved sheath urological soft scope that uses the soft scope body to perfuse fluid, drain fluid and lithotripsy through the gap between the actively curved sheath and the soft scope body, ensuring low pressure in the renal pelvis while aspirating the lithotripsy.

In accordance with another aspect of the present invention, there is further provided an actively curved sheath soft urinary scope comprising:

An actively curved sheath comprising a sheath body, a control handle connected to the rear end of the flexible sheath body, having a suction channel and a connecting channel, and

The soft mirror comprises a soft mirror inner core and a soft mirror handle connected to the rear end of the soft mirror inner core, the soft mirror inner core is suitable for being placed in the connecting channel, an attraction channel is formed between the outer wall of the soft mirror inner core and the inner wall of the bendable sheath body, and the bendable sheath body is suitable for being bent to drive the soft mirror inner core to bend.

Active bending sheath of flexible sheath active bending sheath of flexible urinary endoscope further objects and advantages of the present invention will become fully apparent from the ensuing description and the accompanying drawings.

One advantage of the invention is to provide an anti-blocking urological hard lens which can realize the joint operation of perfusion and calculus removal in the process of calculus breaking and ensure that the reflux of flushing fluid accompanies the process of calculus breaking.

Another advantage of the present invention is to provide an anti-blocking urological hard scope, the surface of which is provided with a hydrophilic coating, which ensures the smoothness of the entry of the anti-blocking urological hard scope when inserted into the ureter of a patient, and avoids the occurrence of the phenomenon of damage to the ureter caused by the lens holding.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that achieves efficient drainage of the treated crushed stone through a two-piece construction.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that facilitates the handling of ureteral calculi with polyps through two-piece operational control.

Another advantage of the invention is to provide an anti-blocking urological hard lens, wherein two sets of combined materials of the anti-blocking urological hard lens are different, and a disposable sheath material is selected, so that inconvenience in cleaning and cross infection of the sheath are avoided.

Another advantage of the present invention is to provide an anti-blocking urinary hard scope, which is convenient for cleaning a broken stone channel by selecting reusable materials, and reduces the use cost of the anti-blocking urinary hard scope.

Another advantage of the present invention is to provide a method for removing urinary calculus that is resistant to blockage by a hard urinary mirror that can handle most volumes of crushed stone using the displaceability of two pieces of the hard urinary mirror in a patient.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that maintains a thin overall size due to the placement of the lithotripsy evacuation channel between the outer sheath and the inner core, thereby reducing insertion into the patient ureter, urethra due to surgical procedures and avoiding further trauma to the patient ureter, urethra.

Another advantage of the present invention is to provide an anti-blocking urological hard scope whose relative positional relationship can be adjusted and fixed in real time according to the specific operating conditions in the surgery.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that is simple and convenient to operate.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that discharges debris treated in a patient with a flushing fluid by means of negative pressure aspiration and adjusts the discharge efficiency in real time according to the pressure difference in the patient.

Another advantage of the present invention is to provide an anti-blocking urological hard scope that ensures that the surgical environment is always in view.

Another advantage of the present invention is to provide a head assembly that is suitable for use with a hard ureteroscope or a soft ureteroscope.

Another advantage of the present invention is to provide a head assembly that achieves the function of expelling crushed stone, perfusate, by changing between different conditions.

According to one aspect of the invention, an anti-blocking urinary hard scope is provided, comprising an outer sheath assembly providing stiffness support, an inner core assembly comprising a scope body, a visual unit, an illumination unit and a perfusion unit, the scope body being adapted to be mounted inside the outer sheath assembly, the visual unit, the illumination unit and the perfusion unit being mounted to a front face of the scope body, the visual unit being adapted to obtain a front field of view, the illumination unit providing illumination and the perfusion unit providing perfusion attraction, and an exhaust channel being provided between the outer sheath assembly and the inner core assembly to provide a stone evacuation path, the size of the exhaust channel being varied by varying the positional relationship between the inner core assembly and the outer sheath assembly.

Drawings

Fig. 1 is a schematic view showing the overall structure of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention.

Fig. 2 is an exploded view of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention.

Fig. 3 is a partial cross-sectional view of an actively curved sheath-type soft urinary mirror in accordance with a first preferred embodiment of the invention.

Fig. 4 is a schematic end view of an actively curved sheath-type soft urinary mirror and the soft mirror body according to a first preferred embodiment of the invention.

Fig. 5 is a view showing the operation of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the present invention.

Fig. 6 is a second view of the use of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention.

Fig. 7 is a third view of the use of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention.

Fig. 8 is a diagram showing the use of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention.

Fig. 9 is an enlarged view of a portion of an actively curved sheath-type soft urinary mirror in accordance with a second preferred embodiment of the invention.

Fig. 10 is an enlarged view of a portion of an actively curved sheath-type soft urinary mirror in accordance with a third preferred embodiment of the invention.

FIG. 11 is a schematic view of an anti-blocking urohard mirror according to a preferred embodiment of the invention.

Fig. 12 is an overall exploded view of the anti-blocking urohard mirror according to the preferred embodiment of the present invention.

Fig. 13 is a schematic view showing a transition from an installation state to a calculus removal state of the anti-blocking urinary hard mirror according to the preferred embodiment of the present invention.

Fig. 14 is a schematic view of an application scenario of the anti-blocking urohard mirror according to the preferred embodiment of the present invention.

Fig. 15 is a schematic view of the urinary hard mirror according to the preferred embodiment of the invention.

Fig. 16 is a schematic view showing a negative pressure suction process of the anti-blocking urohard mirror according to the preferred embodiment of the present invention.

Fig. 17 is a partial schematic view of an anti-blocking urohard mirror according to a second preferred embodiment of the invention.

Fig. 18 is an end view schematically showing the anti-blocking urohard mirror according to the preferred embodiment of the present invention.

Fig. 19 is a partial cross-sectional view of an anti-blocking urohard mirror according to a third preferred embodiment of the invention.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention. It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention. It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Embodiment one:

Referring to fig. 1-8, an actively curved sheath urological soft mirror in accordance with a preferred embodiment of the present invention is illustrated. The actively curved sheath urological soft mirror 1 is applied in the surgical procedure of urinary tract stone treatment. Specifically, the active bending sheath type soft urinary scope 1 is suitable for treating calculus by entering the ureter through a natural channel of a human body, and after the calculus is crushed, the crushed calculus can be discharged out of the body through the active bending sheath type soft urinary scope 1.

In this embodiment, the active bending sheath type soft urinary scope 1 includes an introducer sheath 10, an active bending sheath 20 and a soft scope body 30, the introducer sheath 10 can be placed in the active bending sheath 20, and the head end of the introducer sheath 10 is wedge-shaped and has a certain hardness, which is suitable for supporting the soft active bending sheath 20 into a predetermined focus. The soft mirror main body 30 is suitable for being inserted into the active bending sheath 20, the active bending sheath 20 can be actively bent, the bending direction and angle are adjustable, and the active bending sheath 20 is bent to drive the soft mirror main body 30 to bend, so that stones at dead angles can be found under visual conditions, and the stone breaking effect is better.

For convenience of explanation, one end of the active bending sheath type soft urinary scope 1 inserted into the patient ureter is used as the front end of the active bending sheath type soft urinary scope 1, and one end of the active bending sheath type soft urinary scope 1 left outside the patient is used as the rear end of the active bending sheath type soft urinary scope 1.

Fig. 1 is a schematic view showing the overall structure of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the invention. The active bending sheath 20 comprises a bendable sheath body 21 and a control handle 22, wherein the bendable sheath body 21 is connected to the front end of the control handle 22, the soft mirror body 30 comprises a soft mirror inner core 31 and a soft mirror handle 32, and the soft mirror handle 32 is arranged at the rear end of the soft mirror inner core 31 for holding by medical staff. Wherein the control knob 22 and the soft mirror knob 32 are sized to match each other such that the control knob 22 and the soft mirror knob 32 are detachably connected to each other, and such that the active bending sheath 20 and the soft mirror body 30 are detachably connected to each other, that is, the soft mirror body 30 is adapted to be inserted into the inside of the active bending sheath 20.

Fig. 2 is an exploded view of the actively curved sheath-type soft urinary mirror 1 according to a first preferred embodiment of the present invention. The active bending sheath 20 is sleeved outside the soft lens main body 30, the bendable sheath main body 21 is sleeved with the soft lens inner core 31, the control handle 22 is sleeved with the soft lens handle 32, an attraction channel 23 is formed between the outer wall of the soft lens inner core 31 and the inner wall of the bendable sheath main body 21, and the bendable sheath main body is suitable for bending to drive the soft lens inner core to bend.

When the soft mirror body 30 is inserted into the active bending sheath 20, a gap between the active bending sheath 20 and the soft mirror body 30 is defined as the suction channel 23. The suction channel 23 extends longitudinally inside the active bending sheath 20, and the suction channel 23 extends from the front end of the bendable sheath body 21 rearward to the side of the control handle 22 to penetrate the bendable sheath body 21 and the control handle 22. The active bending sheath 20 further has a connection channel 24, and the connection channel 24 extends from the front end of the bendable sheath body 21 to the end of the control handle 22 to penetrate the bendable sheath body 21 and the control handle 22. In addition, the suction passage 23 and the front portion of the connection passage 24 are one passage. That is, the suction channel 23 is a part of the connection channel 24, that is, a part of the connection channel 24 is occupied by the soft mirror body 30, and the soft mirror body 30 forms the suction channel 23 for the occupied part of the connection channel 24.

Fig. 3 is a partial cross-sectional view of the actively curved sheath-type soft urinary mirror 1 according to a first preferred embodiment of the invention. The bendable sheath body 21 includes a bending unit 211 and a connection unit 212, the bending unit 211 being disposed at the front of the connection unit 212, in other words, both ends of the connection unit 212 are connected to the bending unit 211 and the control handle 22. The bending unit 211 is suitable for bending at a predetermined angle, is easy to find stones at dead corners under the visual condition, solves the problem that the stones can be seen but cannot be crushed, and enables the active bending sheath type soft urinary mirror 1 to have better crushing effect.

In addition, in the present embodiment, the bending unit 211 is preferably configured in a spiral structure or a serpentine structure, etc., so that the bending unit 211 can bend at different nodes, thereby facilitating the control of the bending angle and direction by the medical staff. In particular, the inside of the bending unit 211 is preferably in a spiral structure or a snake bone structure, and the outside of the bending unit 211 and the connecting unit 212 are preferably made of a lubricious and smooth material so as to reduce friction between the bending unit 211 and the connecting unit 212 and the patient and reduce injury to the tissue of the patient by the actively bending sheath-type soft urinary mirror 1.

The control handle 22 includes a control part 221 and a bending handle 222, the control part 221 is connected to the rear end of the bendable sheath body 21, the bending handle 222 is disposed at the control part 221, and the bending handle 222 is adapted to control the bending of the bending unit 211. In other words, when the bending handle 222 is pushed from the control handle 22 to the bendable sheath body 21, the bending unit 211 is adapted to bend to the left, when the bending handle 222 is pushed from the bendable sheath body 21 to the control handle 22, the bending unit 211 is adapted to bend to the right, and the medical staff is adapted to change the pushing distance of the bending handle 222, so as to control the bending degree of the bending unit 222, and further enable the actively bending sheath type urological soft mirror 1 to see and break stones at dead angles.

The control handle 22 further has a negative pressure adjusting port 223 and a suction port 224, the negative pressure adjusting port 223 is disposed on the surface of the control portion 221, wherein the negative pressure adjusting port 223 is communicated with the suction channel 23 to control the suction force of the actively curved sheath-type soft urinary endoscope 1. In this embodiment, the negative pressure adjusting port 224 is preferably disposed on a side portion of the control portion 221, and when the medical staff grips the control portion 221, the fingers of the medical staff can just cover the negative pressure adjusting port 223, so that the medical staff is not required to rotate the hands to adjust, and convenience of operation is increased.

During operation, the medical staff covers the negative pressure adjusting opening 223 by fingers, and changes the negative pressure of the suction channel 23 by changing the tightness between the fingers and the negative pressure adjusting opening 223, and adjusts the suction and discharge force of drainage, stone discharge or dirt discharge, etc. so as to better control the discharge of crushed stones.

The control handle 22 further comprises a sealing member 225, wherein the sealing member 225 is disposed on the control portion 221, and the sealing member 225 is adapted to seal the connecting channel 24 after the soft lens body 30 is inserted into the connecting channel 24 of the active bending sheath 20, so that a medical staff can better adjust the pressure in the suction channel 23 through the negative pressure adjusting port 223, and better control the discharge of crushed stone.

It should be noted that, the sealing member 225 is made of a flexible material, such as rubber, and when the soft lens body 30 is inserted into the active bending sheath 20 and the soft lens body 30 moves in the front-back relative position, the sealing member 225 can always cover the soft lens body 30, so that the soft lens body 30 and the active bending sheath 20 always hold a sealing state, thereby facilitating the discharge of crushed stone.

More specifically, in the present embodiment, the sealing member 225 is disposed on the side wall of the connection channel 24 and located at the rear of the negative pressure adjustment opening 223, that is, the axial position of the sealing member 225 is located at the rear of the negative pressure adjustment opening 223, and when the soft lens body 30 is inserted into the connection channel 24 of the active bending sheath 20, the sealing member 225 can be wrapped on the outer side of the soft lens body 30 to seal the connection channel 24, so as to avoid air leakage between the active bending sheath 20 and the soft lens body 30, and influence the discharge of crushed stone.

In addition, in this embodiment, the center of the sealing member 225 has a through hole, and the diameter of the through hole is smaller, that is, the through hole is smaller than the diameter of the whole sealing member 225, the soft lens inner core 31 of the soft lens main body 30 is suitable for being inserted into the through hole of the sealing member 225, and the sealing member 225 can always wrap the soft lens main body 30, so that the medical staff can conveniently control the discharge of crushed stone.

The soft lens main body 30 further has a perfusion channel 33, an instrument channel 34 and a visual channel 35, the perfusion channel 33, the instrument channel 24 and the visual channel 25 are mutually independent and longitudinally arranged in the soft lens main body 30, the perfusion channel 33 is a channel for the perfusion liquid to enter, the perfusion liquid can enable the visual field of the operation to be held in a clear state, and after the stone is broken, the stone can be washed into the suction channel 23 by the perfusion liquid and discharged. The instrument channel is the channel into which an external surgical instrument such as a lithotripsy laser or the like enters. More specifically, the irrigation channel 33, the instrument channel 24, and the visualization channel 25 all extend posteriorly from the anterior end of the soft lens core 31 to extend through the soft lens core 31 and the soft lens handle 32.

Wherein the irrigation channel 33 and the front part of the instrument channel 34 are the same channel, i.e. in this embodiment both the irrigation fluid and the surgical instrument etc. enter the patient through the same channel. It should be noted that the rear portions of the irrigation channel 33 and the instrument channel 34 are provided with two different channel openings, that is, the rear ports of the irrigation channel 33 and the instrument channel 34 are provided at the distal end and the side of the soft lens handle 32, respectively, and the front ports of the irrigation channel 33 and the instrument channel 34 are provided as one port at the front end surface of the soft lens core 31.

The soft lens inner core 31 includes an extension portion 311 and a main core 312, the extension portion 311 is disposed at the front end of the main core 312, and the extension portion 311 is adapted to extend out of the connection channel 24 when the soft lens main body 30 is inserted into the connection channel 24 of the active bending sheath 20, and the main core 312 is located in the connection channel 24 when the soft lens 1 is used for lithotripsy. In the present embodiment, the extension 311 is provided in a wedge tapered shape, and the main core 312 is provided in a cylindrical shape. That is, the thickness of the front end of the extension 311 is smaller than the thickness of the rear end of the extension 311, and the thickness of the front end is set to be minimum, that is, the thickness of the extension 311 becomes gradually thicker from the front end 1 toward the rear end.

The extension 311 and the main core 312 are both made of flexible materials, and the bendable sheath body 21 of the active bending sheath 20 is adapted to drive the soft lens inner core 31 to bend when bending, that is, the active bending sheath 20 actively bends to drive the soft lens body 30 to bend passively, so as to better find and break up stones.

The extension 311 includes an outer end surface 3111, at least one visual unit 3112 and at least one illumination unit 3113, the visual unit 3112 and the illumination unit 3113 being disposed on the outer end surface 3111, the front ports of the irrigation channel 33 and the instrument channel 34 being one port, based on which the front ports of the irrigation channel 33 and the instrument channel 34 are also disposed on the outer end surface 3111.

In the present embodiment, it is preferable that the number of the visual units 3112 is set to one, the number of the illumination units 3113 is set to two, and the illumination units 3113 are disposed at both sides of the visual units 3112. It will be appreciated by those skilled in the art that the number of the visual units 3112 and the illumination units 3113 is not a limitation of the present invention, and need only meet the surgical needs. In addition, the power lines and the like of the vision unit 3112 and the illumination unit 3113 may be connected to the outside through the vision channel 35 to meet the requirements of the operation.

The soft lens handle 32 has a pouring port 321 and an instrument port 322, the pouring port 321 extends inward from the surface of the soft lens handle to communicate with the pouring channel 33, the instrument port 322 extends inward from the surface of the soft lens handle to communicate with the instrument channel 34, and the pouring liquid is suitable for entering the pouring channel 33 from the pouring port 321, and the external surgical instrument is suitable for entering the instrument channel 34 through the instrument port 322.

The soft mirror inner core 31 further has at least one guiding groove 313, and the guiding groove 313 is disposed on the outer wall of the extension 311 and the main core 312. In other words, the guide grooves 313 are concavely extended inward from the outer walls of the extension 311 and the main core 312 to enlarge the area for discharging the crushed stone, which is more advantageous for the discharge of the crushed stone. When the soft lens body 30 is placed in the connecting channel 24, the soft lens core 31 occupies a part of the connecting channel 24, and the part of the connecting channel 24 not occupied by the soft lens core 31 is the suction channel 23. The arrangement of the guide groove 313 reduces the cross section of the soft lens inner core 31, reduces the space occupied by the soft lens inner core 31 in the connecting channel 24, and further enlarges the space of the suction channel 23, thereby being beneficial to the discharge of broken stones.

In addition, in the present embodiment, the number of the guide grooves 313 is preferably set to two, that is, the guide grooves 313 are provided on both sides of the soft mirror inner core 31. The extension 311 of the soft lens core 31 is arranged in a wedge-shaped tapered shape, so that the crushed stone is adapted to enter the suction channel 23 from the to-be-guided groove 313 for being discharged out of the patient.

In this embodiment, the cross-sectional incision of the guide groove 313 is curved in a crescent shape, and the visual unit 3112, the illumination unit 3113, the perfusion channel 33 and the instrument channel 33 are arranged in as small a region as possible, that is, the volume of the guide groove 313 is enlarged to the greatest extent, so that the volume of the soft-mirror inner core 31 occupying the connection channel 24 is reduced, and further the volume of the suction channel 23 is increased, which is advantageous for discharging crushed stone and reducing blockage.

It should be noted that, in other embodiments, the guide groove 313 may not be provided, that is, the actively curved sheath mirror 1 may be discharged through the suction channel 23 after breaking up the stone. Based on this, it will be appreciated by those skilled in the art that whether the actively curved sheath mirror 1 is provided with the guide grooves 313 is not a limitation of the present invention.

Fig. 4 is a schematic end view of the active bending sheath and the soft mirror body of the active bending sheath type soft urinary mirror 1 according to a first preferred embodiment of the invention. In addition, the active bending sheath 20 further includes a first adjusting portion 25, the soft lens body 30 further includes a second adjusting portion 36, the first connecting portion 25 is disposed on the control handle 22, the second adjusting portion 36 is disposed on the soft lens handle 32, and when the soft lens body 30 is inserted into the connecting channel 24 of the active bending sheath 20, the control handle 22 and the soft lens handle 32 are adapted to be mutually adjusted and fixed by the first adjusting portion 25 and the second adjusting portion 36.

Specifically, in the present embodiment, the first adjusting portion 25 and the second adjusting portion 36 are adjusted and fixed by means of a snap connection, that is, the first adjusting portion 25 is configured as a snap groove, the first adjusting portion 25 is disposed on an inner wall of the control handle 22, that is, an inner wall of the connecting channel 24, the second adjusting portion 36 is configured as a snap button, and the second adjusting portion 36 is disposed on an outer portion of the soft lens handle 32. The second adjusting portion 36 is adapted to be engaged with the first adjusting portion 25, so as to control the length of the extension portion 311 extending from the connecting channel 24.

After the soft lens body 30 is placed in the connecting channel 24, the second adjusting portion 36 is adapted to be rotatably screwed with the first adjusting portion 25, when the screwing degree of the first adjusting portion 25 and the second adjusting portion 36 is maximum, the extending portion 311 extends out of the connecting channel 24 to the greatest extent, and when the screwing degree of the first adjusting portion 25 and the second adjusting portion 36 is minimum, the soft lens body 30 is adapted to be withdrawn from the active bending sheath 20.

In addition, in this embodiment, the first adjusting portion 25 and the second adjusting portion 36 are adjusted and fixed by a fastening connection manner, and in other specific embodiments, the first adjusting portion 25 and the second adjusting portion 36 may also be adjusted and fixed by a screw connection manner or a magnetic attraction manner, so as to adjust the length of the soft lens inner core 31 extending out of the connection channel 23, and further enable the actively curved sheath-type soft urinary lens 1 to discharge crushed stones.

The guiding sheath 10 comprises a wedge-shaped head end 11, a guiding sheath main body 12 and a guiding wire channel 13, wherein the wedge-shaped head end 11 is arranged at the front end of the guiding sheath main body 12 so as to facilitate the tissue of a patient to be opened, the active bending sheath 20 can be placed at a preset focus, and the damage to the tissue of the patient is reduced. The guide wire channel 13 extends rearward from the wedge-shaped head end 11 to penetrate the wedge-shaped head end 11 and the guide sheath body 12. A guide wire is adapted to be inserted into the guide wire channel 13.

Fig. 5 to 8 are views illustrating the use of an actively curved sheath-type soft urinary mirror according to a first preferred embodiment of the present application. The method of using the actively curved sheath-type flexible urinary mirror 1 is exemplarily described below. As shown, the method of using the actively curved sheath-type soft urinary mirror 1 according to an embodiment of the application is illustrated. The using method comprises the steps of a, inserting an active bending sheath into an guiding sheath to reach a preset focus, b, withdrawing the guiding sheath from the active bending sheath, inserting a soft mirror main body into the active bending sheath, c, actively bending the active bending sheath to drive the soft mirror main body to bend to reach a stone, and d, pouring and crushing the soft mirror main body, wherein the active bending sheath sucks broken stones.

In step a, an active bending sheath is inserted into the guide sheath to reach a predetermined focus, specifically, the guide sheath 10 is inserted into the connecting channel 23 of the active bending sheath 20, the wedge-shaped head end 11 of the guide sheath 10 extends out of the connecting channel 24, under the guidance of a guide wire, the wedge-shaped head end 11 is pulled out of the tissue in the patient to reach the predetermined focus, the damage to the tissue of the patient can be reduced, and the active bending sheath 20 can be more easily led to reach the renal pelvis through the urethra, the bladder and the ureter to carry out operations such as lithotripsy.

In step b, the introducer sheath is withdrawn from the active bending sheath, a soft mirror body is inserted into the active bending sheath, specifically, after reaching a predetermined lesion, the introducer sheath 10 is withdrawn from the connecting channel 24 of the active bending sheath 20, and the soft mirror body 30 is inserted into the connecting channel 24.

In step c, the active bending sheath actively bends to drive the soft lens body to bend and reach the stone, specifically, the bending unit 211 of the active bending sheath 20 is suitable for controlling the bending by the bending handle 222, and the soft lens body 30 is passively bent under the drive of the bending unit 211, so that the soft lens body 30 can reach the stone. Wherein the soft mirror main body 30 is provided with at least one vision unit 3112 and at least one illumination unit 3113, so that the procedure of the surgery is performed under visual circumstances, greatly increasing the safety of the surgery.

In step d, the soft scope body is perfused and crushed stone, the active curved sheath aspirates the crushed stone, in particular, the perfusate and the surgical stone crusher instrument enter through the perfusion channel 33 and the instrument channel 34, the stone crushing operation is performed, the perfusate enters so that the view of the operation is clear and the crushed stone is crushed and discharged through the suction channel 23. The soft lens inner core 31 is provided with at least one guiding groove 313, so that the volume of the soft lens inner core 31 occupying the connecting channel 24 is reduced, and the volume of the suction channel 23 is further increased, which is beneficial to discharging broken stone and reducing blockage.

When the blockage occurs, the soft lens body 30 is withdrawn backward, so that the entire connection channel 24 is used for discharging liquid and stone, that is, the suction channel 23, i.e., the connection channel 24, greatly increases the stone discharge volume of the suction channel 24.

Fig. 9 illustrates an actively curved sheath-type soft urinary mirror 1A according to a second preferred embodiment of the invention. The actively curved sheath mirror 1A in the present preferred embodiment is implemented as a modification of the first preferred embodiment described above. In this embodiment, the flow guiding groove 313A is changed compared to the first preferred embodiment.

In this embodiment, the guiding sheath 10 and the active bending sheath 20 are similar to the above-described embodiments, and thus, in this embodiment, a description thereof will not be repeated.

Specifically, in the present embodiment, the guide groove 313A is provided in a crescent shape, and in the present embodiment, the guide groove 313A is recessed more inwardly from the soft lens inner core 31A than the guide groove 313 in the above embodiment, that is, the guide groove 313A is recessed more longitudinally from the soft lens inner core 31A, and the visible unit 3112A and the illumination unit 3113A are provided at both sides of the outer end surface 3111A to better utilize the space of the outer end surface 3111A, so that the space of the guide groove 3131A is increased to the greatest extent without affecting the operation of the visible unit 3112A and the illumination unit 3113A, so that the volume of the soft lens inner core 31A is reduced, and the discharge of crushed stone is more facilitated.

In other embodiments, the guide groove 313 may not be provided, that is, the end of the soft mirror body 30 may be provided in a circular shape or an elliptical shape. Based on this, it will be appreciated by those skilled in the art that whether the actively curved sheath mirror 1 is provided with the guide grooves 313 is not a limitation of the present invention

An actively curved sheath-type soft urinary mirror 1B according to a third preferred embodiment of the invention is illustrated in fig. 10. The actively curved sheath mirror 1B in the present preferred embodiment is implemented as a modification of the first preferred embodiment described above. In this embodiment, the flow guiding groove 313B is changed compared to the first preferred embodiment.

Specifically, in the present embodiment, the guide groove 313B is provided as a linear type, and in the present embodiment, the guide groove 313B is recessed laterally from the soft lens inner core 31B to a greater extent than the guide groove 313B in the above embodiment, and the visible unit 3112B and the illumination unit 3113B are provided at both sides of the outer end surface 3111B to better utilize the space of the outer end surface 3111B, so that the space of the guide groove 3131B is increased to the greatest extent without affecting the operation of the visible unit 3112B and the illumination unit 3113B, so that the volume of the soft lens inner core 31B is reduced, which is more advantageous for the discharge of crushed stone.

As shown in fig. 11-16, an anti-blocking urohard mirror 61 according to a preferred embodiment of the invention is illustrated. The anti-blocking urohard mirror 61 is used for treating ureteral or renal stones. The operation of the anti-blocking urological hard mirror 61 comprises the steps of arranging a guide wire to extend to a patient ureter, entering the anti-blocking urological hard mirror 61 along the guide wire, crushing stone, sucking and removing stone, removing the anti-blocking urological hard mirror 61, reserving a ureteral stent along the guide wire, and removing the guide wire.

For ease of description, the direction of the anti-blocking urohard mirror 61 into the patient is defined as front, and vice versa. The front surgical position of the anti-blocking uroscope 61 is defined as the inner side on the inner side of the patient, whereas the side close to the urethra of the patient is defined as the outer side. The anti-blocking urological hard mirror 61 is defined to have two states, an installation state and a calculus removal state. When the anti-blocking uroscope 61 is in the installation state, the anti-blocking uroscope 61 is placed at a preset operation position to carry out lithotripsy, and perfusion suction is carried out at the same time of carrying out lithotripsy. When a larger stone or polyp, which is more difficult to treat, is encountered to wrap up the parallel stone, the treatment is performed by controlling the anti-blocking urohard mirror 61.

The anti-blocking uroscope 61 includes an outer sheath assembly 610 and an inner core assembly 620. The outer sheath assembly 610 and the inner core assembly 620 are adapted to fit together. The outer sheath assembly 610 and the inner core assembly 620 together comprise the anti-occlusion urinary hard mirror 61. The outer sheath assembly 610 is adapted to be mounted to the exterior of the inner core assembly 620. Stated another way, the outer sheath assembly 610 is adapted to be sleeved outside of the inner core assembly 620. When the anti-blocking uroscope 61 is in an installed condition, the outer sheath assembly 610 and the inner core assembly 620 remain relatively fixedly inserted into the ureter extending into the patient. The outer sheath assembly 610 is movably mounted to the inner core assembly 620 when the anti-blocking urological hard lens 61 is in a urological state. In this embodiment, the extension of the anterior end of the outer sheath assembly 610 and the inner core assembly 620 to the ureter of the patient is defined as the predetermined location of the procedure to treat the stones located within the ureter of the patient.

The anti-blocking uroscope 61 has a vent 650, the vent 650 being disposed between the outer sheath assembly 610 and the inner core assembly 620. In other words, the discharge channel 650 is formed by a gap between the outer sheath assembly 610 and the inner core assembly 620. The crushed stone to be treated is discharged to the outside of the body through the discharge passage 650. In particular, the discharge passage 650 in the mounted state of the anti-blocking urological hard mirror 61 is smaller than the discharge passage 650 in the urological hard mirror 61 in the urological hard state. A health care provider can vary the size of the discharge channel 650 by controlling the variation in the relative positional relationship of the outer sheath assembly 610 and the inner core assembly 620.

It is noted that the larger crushed stone to be treated can be removed by withdrawing the inner core assembly 620 from the outer sheath assembly 610. Specifically, the interior of the outer sheath assembly 610 forms the drainage channel 650 to maximize the drainage space for the anti-blocking urohard mirror 61. Withdrawing the inner core assembly 620 to the rear end of the outer sheath assembly 610 maintains the outer sheath assembly 610 as the discharge channel 650 to maximize the discharge of the crushed stone being treated.

The anti-blocking uroscope 61 has an extended region 630 and an operative region 640. The anti-blocking uroscope 61 is inserted into the patient and the forward end of the core assembly 620 extends to a predetermined surgical site within the ureter of the patient. The region inside the patient's body is defined as the extended region 630, and the region outside the patient's body is defined as the operative region 640. The healthcare worker can manipulate the components of the operative region 640. In other words, a healthcare worker may perform the component tasks of the extended region 630 by controlling the components of the operative region 640.

The outer sheath assembly 610 includes a sheath body 611, an adjusting unit 613, a grip unit 614, and a suction unit 615. The sheath 611 provides an installation space, and the adjusting unit 613, the grip unit 614, and the suction unit 615 are installed to the sheath 611. The adjusting unit 613 and the holding unit 614 are located in the operation area 640. The attraction unit 615 is located in the operation area 640. The suction unit 615 communicates with the discharge passage 650. The discharge channel 650 is located in the extension area 630.

The suction unit 615 provides a negative pressure suction effect, and the surgically treated crushed stone is discharged to the suction unit 615 through the discharge passage 650 and finally to the outside of the patient. The adjusting unit 613 provides a control function for the suction unit 615. That is, the adjustment unit 613 is adapted to adjusting the discharge efficiency of the crushed stone to be treated. In other words, the medical staff realizes a controllable stone removal by the adjusting unit 613. The grip unit 6144 provides a grip space for the medical staff to grip.

When the anti-blocking urological hard mirror 61 is in a calculus removing state, a medical staff holds the holding unit 614 by one finger, and presses the adjusting unit 613 by the other finger to control the efficiency of the sucking unit 615. Stated another way, the healthcare worker may provide one-handed control of the anti-blocking urological hard mirror 61.

The sheath 611 has a receiving cavity 6111, and the receiving cavity 6111 is located inside the sheath 611. The core assembly 620 is adapted to be received within the receiving cavity 6111. When the anti-blocking urological hard lens 61 is in an installed state, the inner core assembly 620 is disposed within the accommodating cavity 6111. The core assembly 620 is movably positioned within the receiving cavity 6111 when the anti-blocking urological hard lens 61 is in a urological state. In a refinement, the core assembly 620 moves back and forth within the receiving cavity 6111 to meet the requirements of the surgical purpose.

The adjusting unit 613 has an adjusting hole 6131, the suction unit 615 has a suction hole 6151, the adjusting hole 6131 communicates with the outside and the accommodating chamber 6111, and the suction hole 6151 communicates with the outside and the accommodating chamber 6111. In the present embodiment, the suction hole 6151 and the adjustment hole 6131 are provided on opposite sides to each other. The suction hole 6151 is adapted to discharge crushed stone, and the adjustment hole 6131 is adapted to change the flow rate control of the liquid discharged from the suction hole 6151 by the size of the space on which the medical staff presses. Stated another way, the medical staff can change the pressure of the discharge channel 650 by changing the tightness between the finger and the adjusting hole 6131, adjust the suction and discharge force of the water, the stone or the pollutant, and the like, and also can adjust the pressure in the renal pelvis, thereby avoiding the phenomenon that the image is injected and washed due to the excessive pressure in the renal pelvis, even causing loss to the kidney of the patient, and generating serious complications.

The core assembly 620 includes a mirror 621, a visualization unit 623, an illumination unit 624, and a perfusion unit 625. The mirror 621 provides an installation space. The visualization unit 623, the illumination unit 624, and the perfusion unit 625 are disposed on the mirror 621. The viewing unit 623 extends from the rear end side of the mirror 621 toward the front end, and the illumination unit 624 extends from the rear end side of the mirror 621 toward the front end. The perfusion unit 625 extends from the rear end to the front end of the mirror 621. The visualization unit 623 provides a visualization, the illumination unit 624 provides an illumination, and the irrigation unit 625 provides an irrigation.

The medical staff can obtain a visual field of the front end of the mirror 621 through the visual unit 623. An illumination basis may be provided for the view acquired by the front end of the mirror 621 by the illumination unit 624. In other words, the illumination unit 624 provides the illumination necessary for the visual unit 623 to acquire a field of view. The healthcare worker may perform an irrigation rinse on the ureter of the patient via the irrigation unit 625.

It should be noted that the perfusion unit 625 has a perfusion channel 6251, and the perfusion channel 6251 penetrates through the front and rear end surfaces of the mirror 621. The perfusion channel 6251 is adapted to extend a working device therein. In this embodiment, the working device is embodied as a laser-front device. And the perfusion channel 6251 is also adapted for access to a perfusion apparatus. The irrigation device is adapted for performing an irrigation operation through the irrigation channel 6251. When the anti-blocking uroscope 61 is in the installation state, the front end of the anti-blocking uroscope 61 extends to the patient ureter, the perfusion channel 6251 is internally provided with the working device for carrying out laser lithotripsy, the perfusion channel 6251 is internally provided with a perfusion device for carrying out outside-in perfusion on the perfusion channel 6251. And when the working device is kept to work, the phenomenon of injury of the patient ureter caused by overheat of the working environment is avoided.

In the present embodiment, the arrangement of the visual unit 623, the illumination unit 624, and the perfusion unit 625 is not limited by the present invention. In this embodiment, the visual unit 623 and the perfusion unit 625 are distributed on both sides of the mirror 621 as seen from the front end face of the mirror 621. The illumination units 624 are distributed on both sides of the visualization unit 623 and the perfusion unit 625. The front ends of the viewing unit 623 and the illumination unit 624 are maintained on the same plane, so that a clear view is obtained for the viewing unit 623. The irrigation unit 625 and the visualization unit 623 are located on the same plane, with the purpose that when the working implement extends from the irrigation channel 6251 back to front, the front end of the working implement is located in the field of view of the visualization unit 623, so as to keep the working implement working within the scope of being controllable by the medical staff all the time.

The mirror 621 further has at least one pair of grooves 6211, the grooves 6211 being provided on both sides of the mirror 621. The recess 6211 is located in the extension region 630, and the recess 6211 extends from the front end to the rear end to the junction between the operation region 640 and the extension region 630. The grooves 6211 are disposed on both sides of the viewing unit 623 and the perfusion channel 6251 as viewed from the front end surface of the mirror 621.

It should be noted that the recess 6211 is provided in the mirror body 621, and the outer sheath assembly 610 is removed from the inner core assembly 620 when the anti-blocking hard urinary mirror 61 is not in use. The medical staff can directly perform cleaning work by cleaning the grooves 6211 on the mirror 621.

It should be further noted that, in the present embodiment, the material of the outer sheath assembly 610 is optionally plastic for disposable use. The material of the inner core assembly 620 is optionally implemented as a metal material for reuse. When the anti-occlusion uroscope 61 is subjected to a surgical procedure, the healthcare worker discards the outer sheath assembly 610 which is in direct contact with the patient. Cleaning and disinfecting the inner core assembly 620 inside the outer sheath assembly 610. To ensure that a new disposable outer sheath assembly 610 and inner core assembly 620 that has been cleaned and sterilized may be used in the next surgical procedure. As the sheath assembly 610 is supposed to be sterilized. The receiving cavity 6111 of the sheath 611 is located on the inner surface, and the anti-blocking urohard mirror 61 is generally elongated to adapt to the natural passage in the human body. Complete sterilization is not guaranteed or additional sterilization costs are added to the inner surface of the sheath 611. In contrast to the inner core assembly 620. The grooves 6211 on the outer surface of the mirror 621 are easier to clean. No extra disinfection cost is required to be added, and the subsequent secondary infection can be prevented when the disinfection is in place.

The outer sheath assembly 610 further includes a mounting receiving unit 612, and the inner core assembly 620 further includes a mounting insertion unit 622, the mounting insertion unit 622 being adapted to be disposed on the mounting receiving unit 612. The inner core assembly 620 is adapted to be mounted with the outer sheath assembly 610 by the mounting insertion unit 622 abutting the mounting receiving unit 612 to achieve the mounted state of the anti-blocking urological hard lens 61. That is, the outer sheath assembly 610 is assembled with the inner core assembly 620 through the installation receiving unit 612 and the installation inserting unit 622.

In the present embodiment, the installation receiving unit 612 is implemented as an adjustment ring having an internal thread, and the installation insertion unit 622 is implemented as an installation part having an external thread. The mounting insertion unit 622 is mounted to the mounting receiving unit 612 by means of the mutual fitting of the male screw and the female screw.

In particular, the installation receiving unit 612 and the installation inserting unit 622 can be adjusted in real time during the installation process according to the specific operation condition of the front end of the anti-blocking urological hard mirror 61. In a refinement, the healthcare worker may adjustably dock the mounting insert unit 622 to the mounting receptacle unit 612 outside the patient. At the front end of the anti-blocking uroscope 61. The mirror 621 keeps moving relative to the sheath 611.

Specifically, when stones within the patient ureter are too large, the medical staff can change the positional relationship of the front end of the scope 621 and the front end of the sheath 611 by adjusting the relative positional relationship of the installation receiving unit 612 and the installation inserting unit 622. The front end of the sheath 611 is circular, and the front end of the mirror 621 is conical. That is, the side portions extend in a wedge shape except for the front end surface of the mirror 621. When the anti-blocking urohard mirror 61 is in the mounted state, the front end face of the mirror 621 protrudes from the front end face of the sheath 611, and the front end face of the mirror 621 is located on the front side of the front end face of the sheath 611. When the anti-blocking urological hard mirror 61 is in a urological state, the installation insertion unit 622 is shifted rearward to move the mirror body 621 rearward as a whole. The front end face of the mirror 621 gradually approaches the front end face of the sheath 611, and the front end face of the mirror 621 is located at the rear of the front end face of the sheath 611 as the stone discharging operation proceeds. The discharge channel 650 is a gap between the recess 6211 and the sheath 611 when the anti-blocking urohard scope 61 is in an installed state. The cross-sectional area of the discharge passage 650 is the area of the cross-section of the front end surface of the sheath 611 when the anti-blocking urohard lens 61 is in the urological state.

Exemplary description of the procedure of the anti-blocking uroscope 61 a guidewire is passed along the patient's urethra with its anterior end positioned within the patient's renal pelvis and its posterior end extending posteriorly along the patient's urethra. The anti-blocking uroscope 61 is assembled to the guide wire. The perfusion channel 6251 is sleeved on the guide wire from back to front, and passes into the anti-blocking uroscope 61 along the guide wire. The anti-blocking uroscope 61 passes sequentially through the patient's urethra, bladder, and eventually into the patient's ureter. Stones are found in the ureter of the patient by means of the visualization unit 623. The guidewire is withdrawn from the anterior-posterior along the perfusion channel 6251 and out of the patient. The working instrument is passed back and forth along the irrigation channel 6251, extending the forward end of the working instrument to the forward end of the sheath 611. The visualization unit 623 provides a real-time operating view of the working environment. The illumination unit 624 provides the illumination necessary for the visual unit 623. The working equipment in the patient is operated through the control outside the patient, and the lithotripsy operation is performed. The front end of the working device is irrigated and flushed from back to front through the irrigation channel 6251, so that a certain cooling and reflux effect is achieved, and the visual field of the operation environment is kept clear all the time.

Simultaneously, the medical staff controls the adjusting hole 6131 to conduct negative pressure suction on the discharging channel 650 by one hand. The front working environment of the working device is guaranteed to be carried out under the operation of perfusion and suction, so that the phenomenon that the kidney of a patient is damaged due to excessive internal pressure of the kidney of the patient caused by perfusion is avoided. When a more difficult stone is encountered, the result of the stone being discharged from the suction hole 6151 is achieved by retracting the mirror 621 to expand the discharge passage 650 with the control of the adjustment hole 6131 by a single hand of a medical staff.

Until the disruption of the calculus in the patient ureter is completed, the working device is withdrawn from the patient's body, anteriorly and posteriorly along the perfusion channel 6251. The infusion channel 6251 is passed from the back to the front over the guidewire until it extends to the renal pelvis of the patient. The anti-blocking urohard mirror 61 is withdrawn from the patient from the front back. A ureteral stent is introduced along the guide wire, wherein the front end of the ureteral stent is positioned at the renal pelvis of a patient, and the rear end of the ureteral stent is positioned at the bladder of the patient. The guide wire is withdrawn from the patient from the front to the back. The front end and the rear end of the ureteral stent are respectively clamped at the junction of the renal pelvis and the ureter and the junction of the bladder and the ureter of a patient, so that the operation process is finished.

It is worth mentioning that when a relatively difficult large stone or polyp is encountered to wrap up a parallel stone, the inner core assembly 620 is retracted along the outer sheath assembly 610, keeping the front end surface of the inner core assembly 620 located behind the front end surface of the outer sheath assembly 610. To keep the discharge channel 650 from the previous recess 6211 to a channel with the cross section of the receiving cavity 6111 as outlet, to ensure a maximum discharge area.

In particular, the present invention also provides a head assembly comprising a sheath front section adapted to provide rigidity support and a mirror front section adapted to provide irrigation and visual manipulation, and having a row of stone channels. The anterior segment is adapted to be surrounded by the anterior sheath segment, said another way, the anterior segment is adapted to be mounted inside the anterior sheath end when the head assembly is in the mounted state. When the head assembly is in the working state, the anterior section of the lens provides the functions of visualization, perfusion and lithotripsy, and the anterior section of the sheath provides the function of hardness support.

The debris removal channel is formed between the sheath front section and the scope front section when the head assembly is in the installed state, the debris removal channel being adapted to remove debris processed by the scope front end. That is, the crushed stone is discharged to the outside of the patient through the stone discharge passage.

It should be noted that, when the head assembly is in the mounted state, the front sheath section is engaged with the front mirror section from back to front, and the stone discharging channel is located inside the front sheath section and the front mirror section. Stated another way, the calculus removal channel is not in communication with the patient's interior and exterior. When the head assembly is in an operating state, the anterior mirror segment is retracted from the anterior sheath segment, and the debris removal channel is exposed between the anterior sheath segment and the anterior mirror segment. That is, the calculus removal channel communicates with the inside and outside of the patient at this time. The cleaned broken stone in the patient can be discharged through the stone discharging channel.

It should be further appreciated that the head assembly is adapted to be mounted on a hard or soft mirror and is not limited by the present invention. The head assembly may be configured with at least one recess disposed on a peripheral side of the anterior mirror segment. The depressions may be formed in a stripe shape on the circumferential side of the anterior segment of the lens to increase the gap between the anterior segment of the lens and the anterior segment of the sheath, so as to increase the space of the stone discharging channel, thereby facilitating the stone discharging.

In addition, the concave can be implemented as a plurality of grooves with different lengths from the front section of the mirror, and the grooves are irregularly distributed in the front section of the mirror, so that the gap of the stone discharging channel is increased, and the strength of the front section of the mirror is not affected.

In another embodiment, the stone removal channel may be implemented as a gap formed between a planar structure or a microprotrusion structure of the anterior segment of the scope and the anterior segment of the sheath. To allow passage of crushed stones and perfusate.

In another embodiment, the sheath front section is snapped back-to-front to the mirror front section in the head assembly mounted state. The anterior segment has a recess formed by the gap between the sheath segment and the anterior segment, the recess being allowed to pass crushed stone and perfusate by the procedure. When the head assembly is in a stone discharging state, the front section of the mirror moves from front to back, and forms relative position movement with the front section of the sheath, so that the passing area of the stone discharging channel is increased, and efficient stone discharging is achieved.

Fig. 17 to 18 are schematic views of an anti-blocking hard urinary mirror 61A according to a second preferred embodiment of the invention. The anti-blocking urohard lens 61A is used for treating ureteral calculi. The operation of the anti-blocking urologic hard mirror 61A comprises the following steps of arranging a guide wire to extend to the renal pelvis of a patient, entering the anti-blocking urologic hard mirror 61A along the guide wire, crushing stone, removing the anti-blocking urologic hard mirror 61A, reserving a ureteral stent along the guide wire, and removing the guide wire.

The anti-blocking uroscope 61A includes an outer sheath assembly 610A and an inner core assembly 620A. The outer sheath assembly 610A and the inner core assembly 620A are adapted to fit snugly against each other. The outer sheath assembly 610A and the inner core assembly 620A together comprise the anti-blocking urohard scope 61A. The outer sheath assembly 610A is adapted to be mounted to the exterior of the inner core assembly 620A. Stated another way, the outer sheath assembly 610A is adapted to be sleeved outside of the inner core assembly 620A. When the anti-blocking uroscope 61A is in the installed state, the outer sheath assembly 610A and the inner core assembly 620A remain relatively fixedly inserted into the ureter extending into the patient. The outer sheath assembly 610A is movably mounted to the inner core assembly 620A when the anti-blocking uroscope 61A is in a urological debris-expelled state. In this embodiment, the extension of the anterior end of the outer sheath assembly 610A and the inner core assembly 620A to the ureter of the patient is defined as the predetermined location of the procedure to treat the stones located within the ureter of the patient. In this embodiment, the primary difference between the anti-blocking hard urinary mirror 61A and the above embodiment is that the front end of the core assembly 620A is changed.

The anti-blocking uroscope 61A has a vent 650A, the vent 650A being disposed between the outer sheath assembly 610A and the inner core assembly 620A. In other words, the exhaust channel 650A is formed by the gap between the outer sheath assembly 610A and the inner core assembly 620A. The crushed stone to be treated is discharged to the outside of the body through the discharge passage 650A. In particular, the discharge passage 650A in the mounted state of the anti-blocking urological hard mirror 61A is smaller than the discharge passage 650A in the urological hard mirror 61A in the urological hard state. A health care provider can vary the size of the discharge channel 650A by controlling the variation in the relative positional relationship of the outer sheath assembly 610A and the inner core assembly 620A.

For larger treated crushed stone, the stone may be expelled by withdrawing the inner core assembly 620A from the outer sheath assembly 610A. Specifically, the interior of the outer sheath assembly 610A forms the drainage channel 650A to maximize the drainage space with the anti-blocking urohard mirror 61A. Withdrawing the inner core assembly 620A to the rear end of the outer sheath assembly 610A maintains the outer sheath assembly 610A as the discharge channel 650A to maximize the discharge of the crushed stone being treated.

The core assembly 620A includes a mirror 621A, a visualization unit 623A, an illumination unit 624A, and a perfusion unit 625A. The mirror 621A provides an installation space. The visualization unit 623A, the illumination unit 624A, and the perfusion unit 625A are disposed on the mirror 621A. The viewing unit 623A extends from the rear side of the mirror 621A toward the front, and the illumination unit 624A extends from the rear side of the mirror 621A toward the front. The perfusion unit 625A extends from the rear end of the mirror 621A toward the front end. The visualization unit 623A provides a visualization, the illumination unit 624A provides an illumination, and the irrigation unit 625A provides an irrigation.

The health care provider can obtain a visual field from the front end of the mirror 621A through the visual unit 623A. An illumination basis may be provided for the field of view acquired by the front end of the mirror 621A by the illumination unit 624A. In other words, the illumination unit 624A provides the illumination necessary for the visual unit 623A to acquire a field of view. The healthcare worker may perform an irrigation rinse on the ureter of the patient via the irrigation unit 625A.

It should be noted that the perfusion unit 625A has a perfusion channel 6251A, and the perfusion channel 6251A penetrates through the front and rear end surfaces of the mirror 621A. The perfusion channel 6251A is adapted to extend a working device therein. In this embodiment, the working device is embodied as a laser-front device. And the perfusion channel 6251A is also adapted to be accessed by a perfusion apparatus. The irrigation device is adapted for performing an irrigation operation through the irrigation channel 6251A. When the anti-blocking type hard urinary mirror 61A is in an installation state, the front end of the anti-blocking type hard urinary mirror 61A extends to the patient ureter, the working instrument is introduced into the perfusion channel 6251A to carry out laser lithotripsy, and a perfusion instrument is also introduced into the perfusion channel 6251A to carry out outside-in perfusion on the perfusion channel 6251A. And when the working device is kept to work, the phenomenon of injury of the patient ureter caused by overheat of the working environment is avoided.

In this embodiment, the visual unit 623A and the perfusion unit 625A are distributed on both sides of the mirror 621A as seen from the front end face of the mirror 621A. The illumination units 624A are distributed on both sides of the visualization unit 623A and the perfusion unit 625A. The front ends of the viewing unit 623A and the illumination unit 624A are both maintained on the same plane, so that a clear field of view can be obtained for the viewing unit 623A. The irrigation unit 625A and the visualization unit 623A are positioned on the same plane, with the purpose of keeping the front end of the work implement in the field of view of the visualization unit 623A when the work implement extends from the irrigation channel 6251A from back to front, so as to keep the work implement working within a range that is always controllable by a medical staff.

The mirror 621A further has at least one groove 6211A, and the groove 6211A is disposed on the peripheral side of the mirror 621A. In this embodiment, the recess 6211A is semicircular. The recess 6211 extends from the front end to the rear end of the mirror 621A. Up to the interface of the inner core assembly 620A and the outer sheath assembly 610A. The larger gap formed between the recess 6211A and the outer sheath assembly 610A facilitates the removal of larger volumes of stones from the patient's body as compared to the previous embodiments.

In another embodiment of the present invention, as shown in fig. 619, a pair of grooves 6211B do not extend through a mirror 621B. The grooves 6211B taper from front to back on either side of the mirror 621B so that larger stones are expelled from the patient from the gap between the grooves 6211B and a sheath 611B. The shape of the recess 6211B is not limited by the present invention. The discharge passage 650 is located between the mirror 621B and the sheath 611B, and when the mirror 621B is retracted to the sheath 611B, the discharge passage 650 is enlarged compared to the previous space, so as to facilitate efficient discharge of crushed stone and perfusate.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting. The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims

1. An active bending sheath flexible uroscope, comprising:

An active bending sheath, comprising a bendable sheath body and a control handle connected to a rear end of the bendable sheath body and having a connecting channel; and

A soft mirror body, the soft mirror body includes a soft mirror inner core and a soft mirror handle connected to the rear end of the soft mirror inner core, the soft mirror inner core is suitable for being placed in the connecting channel, the active bending sheath is sleeved on the outside of the soft mirror body, the bendable sheath body and the soft mirror inner core are sleeved, the control handle and the soft mirror handle are sleeved, a suction channel is formed between the outer wall of the soft mirror inner core and the inner wall of the bendable sheath body, and the bendable sheath body is suitable for bending to drive the soft mirror inner core to bend.

2. The active bending sheath-type uroscope according to claim 1, wherein the bendable sheath body comprises a bending unit and a connecting unit, the two ends of the connecting unit are respectively connected to the bending unit and the control handle, the control handle comprises a control part and a bending handle arranged on the control part, and the bending handle is suitable for controlling the bending unit to bend.

3. The active bending sheath uroscope according to claim 2, wherein the control handle further has a negative pressure regulating port and a suction port, the suction port extends inward from the surface of the control handle to connect to the suction channel, and the negative pressure regulating port is connected to the suction channel to control the suction force of the suction port.

4. The active bending sheath uroscope according to claim 3, wherein the control handle further comprises a seal, wherein the seal is arranged on the inner wall of the rear portion of the control handle and is located between the negative pressure regulating port and the end port of the connecting channel.

5. The active bending sheath-type uroscope according to claim 4, wherein the inner core of the soft mirror further comprises an extension portion and a main core body, two ends of the main core body are respectively connected to the extension portion and the soft mirror handle, and the extension portion is suitable for extending out of the connecting channel.

6 . The active bending sheath uroscope according to claim 5 , wherein the extension portion comprises an outer end surface, a visual unit and at least one lighting unit, and the visual unit and the lighting unit are both arranged on the outer end surface.

7. The active bending sheath uroscope according to claim 6, wherein the mirror body further has an irrigation channel, an instrument channel and a visual channel, the irrigation channel and the front part of the instrument channel are the same channel, and the visual channel is independently and longitudinally arranged in the mirror body.

8. The active bending sheath uroscope according to claim 7, wherein the handle of the uroscope has an irrigation port and an instrument port, and the irrigation port and the instrument port extend inward from the surface of the handle of the uroscope to connect the irrigation channel and the instrument channel respectively.

9. The active bending sheath-type uroscope according to claim 8, wherein the active bending sheath further includes a first adjustment portion, the first adjustment portion is arranged on the control handle, the endoscope body further includes a second adjustment portion, the second adjustment portion is arranged on the endoscope handle, the first adjustment portion and the second adjustment portion are suitable for being connected and fixed to each other to connect the endoscope handle and the control handle to each other.

10. The active bending sheath flexible uroscope according to claim 9, wherein the first adjustment portion and the second adjustment portion are adjusted and fixed by screw connection, snap connection, buckle connection or magnetic attraction.

11. An active bending sheath-type flexible uroscope according to any one of claims 1 to 10, wherein the active bending sheath-type flexible uroscope further comprises a guide sheath, the guide sheath being adapted to be inserted into the connecting channel of the active bending sheath, the guide sheath having a guidewire channel, a guidewire being adapted to be inserted into the guidewire channel, the guide sheath being adapted to enter a predetermined lesion through the guidewire.

12. The active bending sheath-type flexible uroscope according to claim 11, wherein the guide sheath further comprises a wedge-shaped head end and a guide sheath body, the wedge-shaped head end is arranged at the front end of the guide sheath body, and the wedge-shaped head end is configured to be tapered to push aside the patient's body tissue.

13. The active bending sheath-type uroscope according to claim 12, wherein the bending unit is configured as a snake bone or spiral structure, the inner core of the soft endoscope is made of a flexible material, and the bending of the bendable sheath body is suitable for driving the inner core of the soft endoscope to bend.

14. An anti-blocking rigid uroscope, characterized by comprising:

an outer sheath assembly;

an inner core assembly, comprising a mirror body, a visual unit, a lighting unit, and an irrigation unit, wherein the mirror body is adapted to be mounted inside the outer sheath assembly, the visual unit, the lighting unit, and the irrigation unit being mounted on the front end face of the mirror body, the visual unit being adapted to obtain a front end field of view, the lighting unit providing illumination, and the irrigation unit providing irrigation and suction; and

A discharge channel, wherein the outer sheath component is sleeved on the outside of the inner core component, and the gap between the outer sheath component and the inner core component forms the discharge channel to provide a stone discharge path, and the size of the discharge channel can be changed by changing the positional relationship between the inner core component and the outer sheath component.

15. The anti-blocking urological rigid endoscope according to claim 14, wherein the mirror body has at least one groove, the groove is arranged on the peripheral side of the mirror body, and the groove is located on the peripheral side of the visual unit, the lighting unit and the irrigation unit.

16. The anti-blocking urological rigid endoscope according to claim 15, wherein the outer sheath assembly comprises a sheath body, an adjustment unit, a gripping unit and a suction unit, the adjustment unit, the gripping unit and the suction unit are installed on the sheath body, the suction unit is controlled by the adjustment unit, and medical staff are suitable for controlling the gripping unit and the adjustment unit with one hand.

17 . The anti-blocking rigid uroscope according to claim 16 , wherein the suction unit has a suction hole, and the suction hole is connected to the discharge channel.

18. The anti-blocking urological rigid endoscope according to claim 14, wherein the anti-blocking urological rigid endoscope has an extension area and an operation area, and when the anti-blocking urological rigid endoscope is in operation, the extension area is located inside the patient's body, and the operation area is located outside the patient's body.

19. The anti-blocking rigid uroscope according to any one of claims 17 to 18, wherein the adjustment unit has an adjustment hole, and the gap of the adjustment hole controls the outflow efficiency of the suction hole.

20. The anti-blocking urological rigid endoscope according to claim 19, wherein the outer sheath assembly includes a mounting receiving unit, the inner core assembly includes a mounting insertion unit, the mounting receiving unit is arranged at the rear end of the sheath body, and the mounting insertion unit is arranged at the front end of the mirror body, and the outer sheath assembly is suitable for completing installation through the mutual cooperation of the mounting insertion unit and the mounting receiving unit.

21. The anti-blocking urological rigid endoscope according to claim 20, wherein the installation insertion unit is adapted to be movably connected to the installation receiving unit to control the positional relationship between the front end of the scope body and the front end of the sheath body.

22. The anti-blocking urological rigid endoscope according to claim 21, wherein the sheath has a receiving cavity, the receiving cavity is suitable for placing the mirror body, and the mirror body is engaged in the receiving cavity from back to front to achieve the installation state of the anti-blocking urological rigid endoscope.

23. The anti-blocking rigid uroscope according to any one of claims 14 to 18, wherein the outer surface of the outer sheath component has a hydrophilic coating and is disposable.

24. An anti-blocking rigid uroscope, characterized by comprising:

a sheath;

an installation receiving unit, the installation receiving unit being arranged at the rear end of the sheath;

a mirror body, the mirror body being adapted to be installed inside the sheath body;

an installation insertion unit, the installation insertion unit being disposed in the middle of the mirror body and movably assembled to the installation receiving unit;

a visual unit;

a lighting unit;

a perfusion unit; and

A discharge channel, wherein the visual unit, the lighting unit and the perfusion unit are arranged on the front end surface of the mirror body, and the discharge channel is located on the side of the visual unit, the lighting unit and the perfusion unit. The visual unit obtains the field of view of the front end of the mirror body, the lighting unit provides light to the visual unit, and the perfusion unit and the discharge channel form a backflow of the flushing liquid.

25. The anti-blocking urological rigid endoscope according to claim 11, wherein a surgical instrument and a guide wire can be passed through the irrigation channel, and the irrigation channel runs through the front and rear end surfaces of the endoscope body.

26. The anti-blocking urological rigid endoscope according to claim 12, wherein the endoscope body has a groove, the groove extending backward from the front end of the endoscope body, and the area of the discharge channel when the anti-blocking urological rigid endoscope is in the stone-expelling state is larger than the channel area when the anti-blocking urological rigid endoscope is in the installed state.