CN115337061B - A minimally invasive fascia stapler for laparoscopic surgical incision - Google Patents

Abstract

The invention discloses a minimally invasive fascia suture device for a laparoscopic surgery incision, which is inserted into a peritoneal side through the incision, and suture actions are implemented by operating an external operating rod so as to puncture and suture peritoneal, muscle and fascia layers, thereby improving suture convenience, stability and safety. The novel suture needle is technically characterized by comprising an operation rod and a suture head arranged at the end part of the operation rod, wherein the suture head comprises a base and at least one pair of suture needles, the suture needles are provided with arc needle rods used for puncturing, the arc needle rods are arranged independently of the outside of the base, needle points are arranged at the ends of the arc needle rod heads, threading holes are formed in the side faces of the needle points, the tail ends of the arc needle rods are fixedly connected with support needle rods, the operation rod comprises a main rod body and a control piece, the main rod body and the suture head are integrally fixed, a linkage structure is arranged inside the suture head, the support needle rods and the control piece are connected to the linkage structure together, the control piece controls the swing of the support needle rods through the linkage structure, and the arc needle rods synchronously move along with the support needle rods to form suture motions.

Description

Minimally invasive fascia suture device for laparoscopic surgical incision

Technical Field

The invention relates to the field of surgical instruments, in particular to a minimally invasive fascia stapler for laparoscopic surgical incisions.

Background

With advances in surgical technology, it has become possible to perform surgery through smaller incisions. In the laparoscopic surgery, a plurality of incisions with the diameter of 5-12 mm are made on the abdomen or the thoracic cavity and other parts, a camera lens and various special surgical instruments are inserted through the incisions, images of various organs in the abdominal cavity, which are shot by the camera inserted in the abdominal cavity, are transmitted to a television screen, and a surgeon performs the operation outside the body by observing the images and using various surgical instruments. Because the endoscopic surgery has the characteristics of small trauma, less complications, safety and quick recovery, the surgical endoscopic surgery has rapid development, is more and more commonly applied, can simultaneously perform examination and treatment, and is an advanced and sophisticated minimally invasive technology.

After the endoscopic surgery is performed, an incision (a channel of the endoscope on the abdomen) is still needed to be sutured, in order to avoid scaring on the skin surface at the incision or reduce the scar degree, a method for suturing the incision on the inner side of the skin exists clinically at present, that is, a surgical suture needle punctures the incision edge (fascia of a subcutaneous abdominal cavity channel) on the inner side of skin tissue through the incision, and finally the suture is collected and fastened, so that the suture part is positioned on the inner side of the incision. However, because the incision is smaller, the part to be sutured is positioned at a relatively deeper position, so that the sufficient operation space and the view of the suture needle are difficult to provide for a user, and because the suture needle main body is difficult to penetrate into the inner side of the incision, the direction and the trend of the suture needle are difficult to control when suturing is implemented, the suture operation difficulty is huge, the problem that suture errors are easy to occur or the suture requirements are not met is solved, and the problem is more difficult for a practitioner or a doctor with insufficient experience of the suture needle.

Therefore, how to simplify the fascia needle inside the incision and facilitate the operation is a problem to be solved in the technical field.

Disclosure of Invention

The invention aims at solving the problems in the background art and provides a minimally invasive fascia suture device for a laparoscopic surgery incision, which is inserted into the peritoneal side through the incision, and suture actions are implemented by operating an external operating rod so as to puncture and suture the peritoneal, muscle and fascia layers, thereby improving suture convenience, stability and safety.

In order to achieve the above object, the present invention adopts the following technical scheme:

a minimally invasive fascia suture device for a laparoscopic surgery incision comprises an operation rod and a suture head arranged at the end part of the operation rod, wherein the suture head comprises a base and at least one suture needle, the suture needle is provided with an arc needle rod used for puncturing, the arc needle rod is independent of the outside of the base, the end of the arc needle rod is provided with a needle point, the side surface of the needle point is provided with a threading hole, the tail end of the arc needle rod is fixedly connected with a supporting needle rod, the operation rod comprises a main rod body and a control piece, the main rod body and the suture head are integrally fixed, a linkage structure is arranged in the suture head, the supporting needle rod and the control piece are jointly connected to the linkage structure, the control piece controls the swing of the supporting needle rod through the linkage structure, and the arc needle rod moves synchronously along with the supporting needle rod to form a suture action.

Compared with the prior art, the minimally invasive fascia suture instrument for the laparoscopic surgical incision adopting the technical scheme has the following beneficial effects:

When the suture operation is implemented, the suture head can be inserted through the incision, so that the suture needle extends into the part to be sutured on the inner side of the abdominal wall, the operation rod is still left outside the incision, the suture head can implement suture needle actions (namely, the single operation of the outside operation rod can complete the puncture actions of suture needles of a plurality of suture openings) only by controlling the operation rod outside, the requirement on suture needle operation space is reduced, and the suture needle is arranged on the inner side of the abdominal wall, so that the suture needle is convenient to control the position of the suture needle, and the suture accuracy and success rate are ensured.

Preferably, the arc needle bar and the supporting needle bar are integrally formed, the end part of the supporting needle bar, which is far away from the arc needle bar, is provided with a shaft lever, the axis of the shaft lever coincides with the circle center of the arc needle bar, the shaft lever is connected to a linkage structure inside the base, and the linkage structure drives the shaft lever to rotate around the axis. The arc needle bar swings around the circle center to form a stitching action, the stitching operation of the round needle is simulated, and the skin tissue is prevented from being laterally pulled to be damaged due to deflection of the arc needle bar.

Preferably, the linkage structure comprises a worm, a transmission gear and a driven gear, the control piece comprises a rotating rod, the rotating rod is sleeved in the main rod body and is coaxially and rotatably connected with the main rod body, the end part of the rotating rod is fixedly connected with the worm to control the worm to rotate, the axis of the transmission gear is perpendicular to the axis of the worm, the transmission gear is meshed with the worm, the driven gear is meshed with the transmission gear, and the supporting needle rod penetrates through the base and is fixedly connected with the driven gear. The driven gear connected with the needle bar is in indirect linkage relation with the worm by adopting the transmission gear for transmission, so that the suture needle can have enough swinging space in the smaller suture needle head, and the suture needle is prevented from colliding with the worm when swinging upwards or swinging backwards.

Preferably, the base is provided with a wire hooking groove, the needle tip can be inserted into the wire hooking groove in an upward overturning manner, the inner wall of the wire hooking groove is provided with a fixing hook, one side of the fixing hook facing the outer part of the wire hooking groove is provided with an arc slope, the side wall of the needle tip is provided with a wire releasing groove, the wire releasing groove extends from the needle tip to the arc needle rod, the threading hole laterally penetrates through the wire releasing groove, and when the needle tip is inserted into the wire hooking groove, the fixing hook is embedded into the wire releasing groove. When the suture is implemented, the needle point of the suture needle enters the thread hooking groove after the suture needle is used for penetrating skin tissues, at the moment, the suture needle swings back to automatically hook the suture, and the suture thread which passes through the skin tissues at the inner side can be taken out by pulling out the suture needle head, so that the subsequent folding and fastening operation can be conveniently carried out, and the suture thread is not required to be clamped by tools such as forceps, so that the suture operation is simpler.

Preferably, the base is provided with a narrowing groove which is formed by recessing the surface of the base, the suture needle is arranged in the narrowing groove, the side surface of the suture needle does not exceed the surface of the base, the upper side wall and the lower side wall of the narrowing groove respectively form a rotation limiting table top and a laminating table top, the laminating table top is arc-shaped and concentric with the arc-shaped needle rod, the suture needle is downwards turned until the needle rod is supported to contact the rotation limiting table top to prevent the suture needle from being continuously turned downwards, and meanwhile, the arc-shaped needle rod is laminated to the laminating table top. In the process of inserting or extracting the suture head into the incision, the suture needle can be retracted in the needle retraction groove, so that the needle point or the needle rod is prevented from exceeding the surface of the suture head, the needle point is prevented from scratching skin tissues, and the smoothness of inserting and extracting the suture head in the incision is ensured.

Preferably, the suture head comprises at least one suture needle group, the suture needle group comprises two suture needles, the two suture needles in the same suture needle group are symmetrically arranged about the central plane of the base, and the two suture needles in the same suture needle group are simultaneously connected to a linkage structure, the linkage structure drives the two suture needles in the same suture needle group to synchronously and symmetrically move, when in suture, the symmetrical two suture needles can respectively and simultaneously penetrate skin tissues at two sides of the incision, and compared with the traditional suture mode (orderly threading at two sides), the suture head has the advantages of higher suture speed and more accurate and tidy suture at two sides of the incision.

Preferably, the suture head is provided with two suture needle groups, the two suture needle groups are arranged side by side on the base, the outer walls of two sides of the base are respectively provided with a needle retracting groove, the inner side of the base is provided with two needle retracting channels, the needle retracting channels extend inwards from the end part of the base, the two needle retracting channels are respectively close to the two needle retracting grooves and are respectively separated from the two needle retracting grooves through a thin partition plate, the two needle retracting channels are separated through a thick partition plate, and two suture needles in the same suture needle group are respectively arranged in the adjacent needle retracting grooves and the needle retracting channels. By adopting the design of two suture needle groups, the volume of the suture needle head can be prevented from being increased, the complex matching of the suture needle and the linkage structure is avoided, the two needle penetrations can be simultaneously carried out side by side, the suture uniformity is improved, and the suture speed is improved.

Preferably, the supporting needle bar is arranged along the radial direction of the arc needle bar, the arc needle bar and the supporting needle bar form a V-shaped included angle, and the central angle of a fan shape formed by the arc needle bar and the circle center of the arc needle bar is not more than 90 degrees.

Preferably, the bottom of the fixing hook is provided with an easy-to-fold rod, the fixing hook is connected with the inner wall of the hooking groove through the easy-to-fold rod, when the fixing hook hooks the suture, the suture is pulled outwards to cause the easy-to-fold rod to be subjected to lateral pulling until the easy-to-fold rod is broken, and the suture and the fixing hook are separated from the hooking groove.

Preferably, the fixing hook is provided with a clamping seam for embedding the suture, the clamping seam extends to the middle part of the fixing hook from the concave side of the fixing hook, and the clamping seam inlet is positioned at the deepest part of the concave side of the fixing hook.

After the suture needle is pulled out after the suture is finished, the suture can be smoothly taken out by pulling the suture to a larger outward pulling force on the fixing hook until the easy-to-break rod is broken; in the preferred scheme, draw the suture line hard and can make the suture line slide in and press from both sides tightly to be fixed in pressing from both sides tight seam, after easy broken pole fracture, the fixation hook can hang and take out along with the suture line on the suture line, avoids the fixation hook to drop and is unfavorable for retrieving, and the key fixation hook that avoids dropping to patient's incision.

Drawings

Fig. 1 is a schematic view of the structure of an embodiment of the minimally invasive fascia stapler for laparoscopic surgical incisions of the present invention.

Fig. 2 is a schematic structural view of the present embodiment (suture needle retracted state).

Fig. 3 is a schematic view of the structure of the present embodiment (needle up-swing state).

Fig. 4 and 5 are schematic diagrams illustrating the arrangement and suturing manner of the suturing needle according to the present embodiment.

Fig. 6 and 7 are schematic views of the structure of the suture needle in the present embodiment.

Fig. 8 is a schematic structural diagram of the linkage structure in this embodiment.

Fig. 9 is a schematic diagram of a matching manner of the arc needle bar and the hooking groove in the present embodiment.

Fig. 10 is a schematic structural diagram of the fixing hook in the present embodiment.

Reference numeral 1, an operating lever; 10, a main rod body, 11, a control part, 2, a suture head, 20, a base, 21, a suture needle, 210, an arc needle rod, 211, a supporting needle rod, 212, a shaft rod, 213, a needle point, 214, a threading hole, 215, a thread-releasing groove, 22, a linkage structure, 220, a worm, 221, a transmission gear, 222, a driven gear, 23, a thread-retracting groove, 230, a rotation limiting table top, 231, a binding table top, 24, a suture-retracting channel, 25, a thread-retracting groove, 26, a fixed hook, 260, an arc slope, 261, a clamping seam, 27, an easy-folding rod and 3, a suture thread.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The minimally invasive fascia stapler for laparoscopic surgical incisions, as shown in fig. 1 to 10, comprises a lever 1 and a stapling head 2 provided at an end of the lever 1, the stapling head 2 comprising a base 20 and two stapling needle groups arranged side by side on the base 20, each stapling needle group comprising two stapling needles 21, the two stapling needles 21 of the same stapling needle group being symmetrically arranged about a central plane of the base 20. The suture needle 21 is provided with an arc needle bar 210 for puncturing, the arc needle bar 210 is independent of the outer arrangement of the base 20, the head end of the arc needle bar 210 is provided with a needle point 213, the side surface of the needle point 213 is provided with a threading hole 214, the tail end of the arc needle bar 210 is fixedly connected with a support needle bar 211, the arc needle bar 210 and the support needle bar 211 are integrally formed, the end part of the support needle bar 211 far away from the arc needle bar 210 is provided with a shaft lever 212, the axis of the shaft lever 212 coincides with the circle center of the arc needle bar 210, the support needle bar 211 is arranged along the radius direction of the arc needle bar 210, the arc needle bar 210 and the support needle bar 211 form a V-shaped included angle, and the fan-shaped circle center angle formed by the arc needle bar 210 and the circle center of the arc needle bar is 90 degrees.

The operation rod 1 comprises a main rod body 10 and a control piece 11, wherein the main rod body 10 and the suture head 2 are integrally fixed, the control piece 11 is a rotary rod, the rotary rod is sleeved in the main rod body 10 and is coaxially and rotatably connected with the main rod body 10, a linkage structure 22 is arranged in the suture head 2, the linkage structure 22 comprises a worm 220, two transmission gears 221 and two driven gears 222, the rotary rod extends into the base 20 from the inside of the main rod body 10 and is fixedly connected with the worm 220 to control the rotation of the worm 220, the axes of the transmission gears 221 are perpendicular to the axes of the worm 220, the two transmission gears 221 are respectively arranged at two sides of the worm 220 and are simultaneously meshed with the worm 220, the two driven gears 222 are respectively arranged below the two transmission gears 221 and are respectively meshed with the transmission gears 221, the shafts 212 of the two suture needles 21 penetrate into the base 20 and are respectively fixedly connected with the two driven gears 222, the transmission gears 221 are rotated by rotating the rotary rod, the driven gears 222 are driven by the rotary rod, the driven gears 212 are driven to rotate around the axes, the two suture needles 21 in the same suture needle group synchronously symmetrically move, the two suture needles 21 respectively, and the two suture needles 21 can pass through the skin tissues respectively and simultaneously.

The two outer walls of the two sides of the base 20 are respectively provided with a needle retracting groove 23, the inner side of the base 20 is provided with two needle retracting channels 24, wherein the needle retracting grooves 23 are formed by recessing the surface of the base 20, the suture needle 21 is arranged in the needle retracting grooves 23, the side surface of the suture needle 21 does not exceed the surface of the base 20, two opposite side walls of the needle retracting grooves 23 are respectively provided with a rotation limiting table 230 and a jointing table 231, the jointing table 231 is arc-shaped and concentric with the arc-shaped needle rod 210, the suture needle 21 is turned downwards until the supporting needle rod 211 contacts the rotation limiting table 230 to prevent the suture needle 21 from continuing to turn downwards, the arc-shaped needle rod 210 is jointed to the jointing table 231, the suture needle 21 can be retracted in the needle retracting grooves 23 in the process of inserting or extracting the suture head 2, the needle tip 213 or the needle rod is prevented from exceeding the surface of the suture head 2, the needle retracting channels 24 are inwards extended from the end part of the base 20, the two needle retracting channels 24 are respectively arranged close to the two needle retracting grooves 23 and are respectively separated from the two needle retracting grooves 23 by a thin partition, the two needle retracting channels 24 are respectively separated from the needle retracting grooves 23 by the thin partition, and the two needle retracting channels 24 are separated by the thick partition plates, and the adjacent needle retracting channels 24 in the needle retracting channels 21 respectively in the needle retracting channels 21 in the same suture set.

The base 20 is provided with a hooking groove 25, each suture needle 21 is correspondingly provided with a hooking groove 25, the needle point 213 can be inserted into the hooking groove 25 in an upward overturning mode, the inner wall of the hooking groove 25 is provided with a fixing hook 26, one side of the fixing hook 26 facing the outside of the hooking groove 25 is provided with an arc slope 260, the side wall of the needle point 213 is provided with a wire releasing groove 215, the wire releasing groove 215 extends from the needle point 213 to the arc needle rod 210, the threading hole 214 laterally penetrates through the wire releasing groove 215, when the needle point 213 is inserted into the hooking groove 25, the fixing hook 26 is embedded into the wire releasing groove 215, the suture needle 21 is pushed inwards continuously to enable the suture 3 to slide through the arc slope 260 of the fixing hook 26 and enter the concave side of the fixing hook 26, so that the suture 3 can be hooked, at the moment, the suture needle 21 can be swung back to automatically hook the suture 3 which passes through the inner skin tissue after the suture needle is pulled out, so that the subsequent suture 3 can be folded and fastened.

The fixed pole 27 of easily breaking is equipped with to 26 bottoms of colluding, and 26 is connected through the pole 27 of easily breaking and colludes the inner wall of wire casing 25 to the fixed pole, and easy broken material or structure when 27 adoption received great pulling force is colluded 26 to the fixed clamp seam 261 that is used for the embedding of suture line 3 that is equipped with, and clamp seam 261 extends to the fixed middle part of colluding 26 by the indent side of fixed collude 26, and clamp seam 261 entry is located the recess deepest of fixed indent side of colluding 26. After the suture needle is pulled out after the suture is finished, the suture 3 is pulled to apply a larger lateral pulling force to the fixing hook 26, until the easy-to-break rod 27 is broken, when the suture 3 is pulled to apply force, the suture 3 slides into and is clamped and fixed in the clamping slot 261, and when the easy-to-break rod 27 is broken, the fixing hook 26 can be hung on the suture 3 and taken out together with the suture 3, so that the fixing hook 26 is prevented from falling off.

When the suturing operation is implemented, the suturing head 2 is inserted through the incision, so that the suturing needle 21 extends into the part to be sutured on the inner side of skin tissue, the operating rod 1 is still left outside the incision, the suturing head 2 can implement the suturing operation only by controlling the operating rod 1 outside, the requirement on the suturing operation space is reduced, and the position of the suturing needle 21 is convenient to control because the suturing needle is on the inner side of the incision, so that the suturing accuracy and success rate are ensured.

While the foregoing is directed to the preferred embodiment of the present invention, other and further modifications and improvements may be made by those skilled in the art without departing from the principles of the invention, and such are intended to be considered within the scope of the invention.

Claims (9)

1. A minimally invasive fascia suture device for a laparoscopic surgical incision is characterized by comprising an operation rod (1) and a suture head (2) arranged at the end part of the operation rod (1), wherein the suture head (2) comprises a base (20) and at least one suture needle (21), the suture needle (21) is provided with an arc needle rod (210) for puncturing, the arc needle rod (210) is independent of the outside of the base (20), the head end of the arc needle rod (210) is provided with a needle point (213), the side surface of the needle point (213) is provided with a threading hole (214), the tail end of the arc needle rod (210) is fixedly connected with a support needle rod (211), the operation rod (1) comprises a main rod body (10) and a control piece (11), the main rod body (10) is integrally fixed with the suture head (2), a linkage structure (22) is arranged in the suture head (2), the support needle rod (211) and the control piece (11) are jointly connected to the linkage structure (22), the control piece (11) controls the swing of the support needle rod (211) through the linkage structure (22), the arc needle rod (210) moves synchronously with the support needle rod (211), a needle point (25) to form a suture hooking groove (25) which can be inserted into an upward, the suture groove (25) is formed by synchronously moving along with the support needle rod (211), the needle point (25) and the needle point (25) is arranged in the suture groove, one side of the fixing hook (26) facing the outside of the hooking groove (25) is an arc slope (260), the side wall of the needle point (213) is provided with a wire releasing groove (215), the wire releasing groove (215) extends from the needle point (213) to the arc needle rod (210), the threading hole (214) laterally penetrates through the wire releasing groove (215), and when the needle point (213) is inserted into the hooking groove (25), the fixing hook (26) is embedded into the wire releasing groove (215).

2. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 1, wherein the arc-shaped needle bar (210) and the supporting needle bar (211) are integrally formed, a shaft lever (212) is arranged at the end, far away from the arc-shaped needle bar (210), of the supporting needle bar (211), the axis of the shaft lever (212) coincides with the center of the arc-shaped needle bar (210), the shaft lever (212) is connected to a linkage structure (22) inside the base (20), and the linkage structure (22) drives the shaft lever (212) to rotate around the axis.

3. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 1, wherein the linkage structure (22) comprises a worm (220), a transmission gear (221) and a driven gear (222), the control member (11) comprises a rotary rod, the rotary rod is sleeved in the main rod body (10) and is coaxially and rotatably connected with the main rod body (10), the end part of the rotary rod is fixedly connected with the worm (220) to control the rotation of the worm (220), the axis of the transmission gear (221) is perpendicular to the axis of the worm (220), the transmission gear (221) is in meshed connection with the worm (220), the driven gear (222) is in meshed connection with the transmission gear (221), and the supporting needle rod (211) penetrates into the base (20) and is fixedly connected with the driven gear (222).

4. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 1, wherein the base (20) is provided with a narrowing groove (23), the narrowing groove (23) is formed by recessing the surface of the base (20), the suturing needle (21) is arranged in the narrowing groove (23) and the side surface of the suturing needle (21) does not exceed the surface of the base (20), two side walls which are opposite up and down of the narrowing groove (23) respectively form a rotation limiting table surface (230) and a fitting table surface (231), the fitting table surface (231) is arc-shaped and concentric with the arc-shaped needle bar (210), and the suturing needle (21) is turned downwards until the needle bar (211) is supported to contact the rotation limiting table surface (230) to prevent the continuous downward turning of the suturing needle (21), and the arc-shaped needle bar (210) is fitted to the fitting table surface (231).

5. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 1, wherein the stapling head (2) includes at least one stapling needle group including two stapling needles (21), the two stapling needles (21) of the same stapling needle group are symmetrically disposed with respect to a central plane of the base (20), and the two stapling needles (21) of the same stapling needle group are simultaneously connected to the interlocking structure (22), and the interlocking structure (22) drives the two stapling needles (21) of the same stapling needle group to move synchronously and symmetrically.

6. A minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 5, wherein the stapling head (2) is provided with two stapling needle groups, the two stapling needle groups are arranged side by side on the base (20), two narrowing channels (24) are respectively arranged on the outer walls of two sides of the base (20), two narrowing channels (24) are arranged on the inner side of the base (20), the narrowing channels (24) extend inwards from the end parts of the base (20), the two narrowing channels (24) are respectively arranged close to the two narrowing channels (23) and are respectively separated from the two narrowing channels (23) through a thin partition board, the two narrowing channels (24) are separated through a thick partition board, and two stapling needles (21) in the same stapling needle group are respectively arranged in the adjacent narrowing channels (23) and the narrowing channels (24).

7. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 4, wherein the supporting needle bar (211) is disposed along a radius direction of the arc-shaped needle bar (210), the arc-shaped needle bar (210) forms a V-shaped included angle with the supporting needle bar (211), and a central angle of a sector formed by the arc-shaped needle bar (210) and a center of a circle thereof is not more than 90 °.

8. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 1, wherein the bottom of the fixing hook (26) is provided with a flexible rod (27), the fixing hook (26) is connected with the inner wall of the hooking groove (25) through the flexible rod (27), when the fixing hook (26) hooks the suture thread (3), the suture thread (3) is pulled outwards to cause the flexible rod (27) to be subjected to lateral pulling force until the flexible rod (27) is broken, and the suture thread (3) and the fixing hook (26) are separated from the hooking groove (25).

9. The minimally invasive fascia stapler for a laparoscopic surgical incision according to claim 8, wherein the fixing hook (26) is provided with a clamping slit (261) for embedding the suture thread (3), the clamping slit (261) extends from the concave side of the fixing hook (26) to the middle of the fixing hook (26), and an entrance of the clamping slit (261) is located at the deepest concave side of the fixing hook (26).