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WO2018058757A1 - Buse, scalpel à jet d'eau, procédé de moulage de buse et procédé de moulage de scalpel à jet d'eau - Google Patents

Buse, scalpel à jet d'eau, procédé de moulage de buse et procédé de moulage de scalpel à jet d'eau Download PDF

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Publication number
WO2018058757A1
WO2018058757A1 PCT/CN2016/105767 CN2016105767W WO2018058757A1 WO 2018058757 A1 WO2018058757 A1 WO 2018058757A1 CN 2016105767 W CN2016105767 W CN 2016105767W WO 2018058757 A1 WO2018058757 A1 WO 2018058757A1
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WIPO (PCT)
Prior art keywords
liquid
nozzle
pipe
tube
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/105767
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English (en)
Chinese (zh)
Inventor
罗凤玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Kesai Bio-Medical Co Ltd
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Huizhou Kesai Bio-Medical Co Ltd
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Publication of WO2018058757A1 publication Critical patent/WO2018058757A1/fr
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Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00526—Methods of manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00535—Surgical instruments, devices or methods pneumatically or hydraulically operated
    • A61B2017/00539—Surgical instruments, devices or methods pneumatically or hydraulically operated hydraulically

Definitions

  • the present invention relates to an apparatus for producing a liquid jet and a method of forming the same, and more particularly to a nozzle, a water jet instrument, a nozzle forming method, and a water jet instrument forming method.
  • the nozzle 1 is capable of flowing a liquid such as a high-pressure liquid into the injection hole 12, and when the liquid flows through the injection hole 12, a liquid jet 12a is formed, and the liquid jet 12a is ejected from the injection hole 12.
  • the liquid jet 12a ejected from the injection hole 12 has a high-pressure characteristic, and at this time, the liquid jet 12a can be used for cutting different objects, for example, for surgical minimally invasive surgery. Cutting of various tissues or organs of the patient's body. Referring to FIG.
  • a common nozzle 1 structure is composed of a liquid inlet pipe 11 including a distal straight pipe portion 111, a 180-degree curved pipe portion 112, and a proximal straight pipe portion.
  • the distal straight tube portion 111 has a first liquid inlet 111a and two liquid outlets 111b
  • the 180 degree elbow portion 112 has two open ends 112a
  • the proximal straight tube portion 113 has a flat head 113b and a second The liquid inlet 113a
  • the orifice 12 is located on the flat head 113b.
  • proximal end refers to an end of the liquid inlet tube 11 capable of performing cutting on the object to be cut when the nozzle 1 is in operation
  • distal end means that when the nozzle 1 is in operation, the liquid inlet tube 11 is away from the object to be cut.
  • the flow direction of the high-pressure liquid is first bent through 180 degrees, and then flows to the injection hole 12, and since the proximal straight pipe portion 113 is provided as the flat head 113b, the high-pressure liquid is bent at 180 degrees and flows to the injection hole.
  • the flow direction is parallel to the central axis of the proximal straight tube portion 113, and the flow direction of the high pressure liquid in the proximal straight tube portion 113 is as indicated by the direction of the dotted arrow in FIG. 2, resulting in only the proximal straight tube portion 113.
  • a small portion of the high pressure liquid flowing near the central axis forms a liquid jet 12a in the orifice 12 to be ejected from the orifice 12, thereby causing excessive high pressure liquid loss.
  • the present invention in order to overcome the drawback of excessive liquid loss caused by a flat head in a conventional nozzle, provides a nozzle, a water jet instrument, a nozzle forming method and a water jet instrument forming method.
  • a nozzle disclosed herein comprising:
  • Inlet tube which includes:
  • the distal straight tube has a first liquid inlet and a liquid outlet
  • a proximal straight pipe portion having a second liquid inlet port and a convex head portion; the second liquid inlet port communicating with the other end portion of the curved pipe portion;
  • the inlet pipe provides a passage for the liquid to flow to the orifice; when the liquid flows through the convex closure, the liquid can smoothly transition to the orifice; the orifice causes the liquid flowing therethrough to form a jet of liquid.
  • a waterjet instrument disclosed herein comprising: a nozzle of the above structure, and
  • the jet recovery port receives the liquid jet ejected from the orifice.
  • a nozzle forming method disclosed herein comprising:
  • the inlet tube comprises a distal straight tube portion, a curved tube portion and a proximal straight tube portion, and the outlet portion of the distal straight tube portion communicates with one end portion of the curved tube portion, and the proximal end portion of the straight tube portion
  • the second inlet port is connected to the other end of the curved pipe portion;
  • the inlet pipe provides a passage for the liquid to flow to the orifice; when the liquid flows through the convex closure, the liquid can smoothly transition to the orifice; the orifice causes the liquid flowing therethrough to form a jet of liquid.
  • the liquid return pipe Positioning the liquid return pipe, the liquid return pipe has a jet recovery port, and the jet recovery port is opposite to the spray hole;
  • the jet recovery port of the liquid return pipe can receive the liquid jet sprayed by the spray hole.
  • the flow channel can smoothly transition from the inner lumen of the proximal straight tube to the orifice on the convex surface of the convex head, thereby effectively reducing the loss of liquid; secondly, flowing along the lumen of the proximal straight tube to the orifice
  • the liquid, its flow channel is gradually shrinking, which can further reduce the loss of liquid.
  • the second aspect of the present invention also provides a nozzle of another structure, a water jet instrument, a nozzle forming method and a water jet instrument forming method.
  • a nozzle disclosed herein comprising:
  • Inlet tube which includes:
  • the distal straight tube has a first liquid inlet and a liquid outlet
  • a curved pipe portion having two open ends, wherein one end portion communicates with the liquid outlet;
  • a proximal straight pipe portion having a second liquid inlet port and a convex head portion; the second liquid inlet port communicating with the other end portion of the curved pipe portion;
  • the inlet pipe provides a passage for the liquid to flow to the orifice; when the liquid flows through the convex closure, the liquid can smoothly transition to the orifice; the orifice causes the liquid flowing therethrough to form a jet of liquid.
  • a waterjet instrument comprising: a nozzle of the above structure;
  • the jet recovery port receives the liquid jet ejected from the orifice.
  • a nozzle forming method comprising:
  • the inlet tube comprises a distal straight tube portion, a curved tube portion and a proximal straight tube portion, and the outlet portion of the distal straight tube portion communicates with one end portion of the curved tube portion, and the proximal end portion of the straight tube portion
  • the second inlet port is connected to the other end of the curved pipe portion;
  • the inlet pipe provides a passage for the liquid to flow to the orifice; when the liquid flows through the convex closure, the liquid can smoothly transition to the orifice; the orifice causes the liquid flowing therethrough to form a jet of liquid.
  • a method of forming a waterjet instrument comprising: the above nozzle forming method;
  • the liquid return pipe Positioning the liquid return pipe, the liquid return pipe has a jet recovery port, and the jet recovery port is opposite to the spray hole;
  • the jet recovery port of the liquid return pipe can receive the liquid jet sprayed by the spray hole.
  • the nozzle and the waterjet instrument disclosed in the second aspect of the present invention after the liquid is bent through the matching angle of the curved pipe portion, the liquid flows smoothly along the convex sealing head, and then flows smoothly along the inner lumen of the proximal straight pipe portion.
  • the hole realizes a smooth transition of the high-pressure liquid to the nozzle hole, improving the utilization of the liquid and avoiding excessive liquid loss.
  • Figure 1 is a schematic cross-sectional view of a nozzle in the prior art
  • FIG. 2 is a flow cross-sectional view of a high pressure liquid in a proximal straight pipe portion in the prior art
  • Figure 3 is a schematic cross-sectional view showing the nozzle of the first embodiment with a tapered head
  • Figure 4 is a schematic cross-sectional view showing the nozzle of the first embodiment when the nozzle is closed by a circular arc surface;
  • Figure 5 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a conical head in the first embodiment
  • Figure 6 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a circular arc head in the first embodiment
  • Figure 7 is a schematic cross-sectional view showing the nozzle of the third embodiment when a nozzle is used
  • Figure 8 is a schematic cross-sectional view of the nozzle of the third embodiment when the nozzle is closed by a circular arc surface
  • Figure 9 is a cross-sectional view showing the flow of the high pressure liquid when the nozzle adopts a conical head in the third embodiment
  • Figure 10 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a circular arc face seal in the third embodiment
  • Figure 11 is a schematic cross-sectional view showing the nozzle of the sixth embodiment using a tapered head
  • Figure 12 is a cross-sectional view showing the nozzle of the sixth embodiment when the nozzle is closed by a circular arc surface
  • Figure 13 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a conical head in the sixth embodiment
  • Figure 14 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a circular arc face seal in the sixth embodiment
  • Figure 15 is a schematic cross-sectional view showing the nozzle of the seventh embodiment using a tapered head
  • Figure 16 is a cross-sectional view showing the nozzle of the seventh embodiment when the nozzle is closed by a circular arc surface;
  • Figure 17 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a conical head in the seventh embodiment
  • Figure 18 is a cross-sectional view showing the flow of high pressure liquid when the nozzle adopts a circular arc head in the seventh embodiment
  • Figure 19 is a schematic cross-sectional view showing the water jet knife of the nozzle in the eleventh embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are inscribed;
  • Figure 20 is a schematic cross-sectional view showing the water jet tool of the nozzle in the eleventh embodiment when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are inscribed;
  • Figure 21 is a schematic cross-sectional view showing the water jet tool of the nozzle of the eleventh embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are externally cut;
  • Figure 22 is a schematic cross-sectional view showing the water jet tool of the nozzle in the eleventh embodiment when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are externally cut;
  • Figure 23 is a schematic cross-sectional view showing the water jet knife of the nozzle in the twelfth embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are inscribed;
  • Figure 24 is a schematic cross-sectional view showing the water jet tool of the nozzle of the embodiment 12 in which the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are inscribed;
  • Figure 25 is a schematic cross-sectional view showing the water jet knife of the nozzle in the twelfth embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are externally cut;
  • Figure 26 is a schematic cross-sectional view showing the water jet instrument when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are externally cut;
  • Figure 27 is a schematic cross-sectional view showing the water jet knife of the nozzle in the thirteenth embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are inscribed;
  • Figure 28 is a schematic cross-sectional view showing the water jet knife of the nozzle in the thirteenth embodiment when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are inscribed;
  • Figure 29 is a schematic cross-sectional view showing the water jet knife of the nozzle of the thirteenth embodiment in which the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are externally cut;
  • Figure 30 is a schematic cross-sectional view showing the water jet tool of the nozzle of the thirteenth embodiment when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are externally cut;
  • Figure 31 is a schematic cross-sectional view showing the water jet knife of the nozzle in the fourteenth embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are inscribed;
  • Figure 32 is a schematic cross-sectional view showing the water jet tool of the nozzle in the fourteenth embodiment when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are inscribed;
  • Figure 33 is a schematic cross-sectional view showing the water jet knife of the nozzle in the fourteenth embodiment when the nozzle adopts a conical head and the distal straight tube portion and the liquid return tube are externally cut;
  • Figure 34 is a schematic cross-sectional view showing the water jet instrument when the nozzle adopts a circular arc face seal and the distal straight pipe portion and the liquid return pipe are externally cut in the fourteenth embodiment.
  • Nozzle 11, liquid inlet tube; 111, distal straight tube portion; 111a, first liquid inlet port; 111b, liquid outlet port; 112, elbow portion; 112a, end portion; 113, proximal straight tube portion 113a, second liquid inlet; 113b, flat head; 113c; convex head; 12, nozzle hole; 12a, liquid jet; 2, water jet instrument; 21, liquid return pipe; 21a, jet recovery port.
  • the present invention relates to a nozzle, a waterjet instrument, a nozzle molding method, and a waterjet instrument molding method.
  • the nozzle and waterjet instrument of the present invention are very suitable for use in various surgical minimally invasive procedures in order to utilize a liquid jet to cut, ablate, peel or remove various tissues or organs of a patient's body, etc.
  • the nozzle and waterjet instrument of the invention are also applicable to other objects to be cut or perforated; of course, the nozzle and waterjet instrument of the present invention can also be applied to other liquid ejecting devices having various structures and various purposes.
  • a high pressure liquid is introduced into the nozzle and the waterjet device; when the nozzle and the waterjet device of the present invention are used for other liquid ejecting devices having various structures and various purposes, depending on the purpose of use of the nozzle and the water jet instrument, it is possible to appropriately select whether the liquid introduced into the nozzle and the water jet instrument is a high pressure liquid or a normal liquid.
  • the embodiment of the nozzle and the waterjet instrument provided by the present invention can be combined with externally held grips of various configurations, so that the operator can comfortably hold by hand, so that the nozzle or the waterjet instrument can be more conveniently used for the nozzle.
  • the nozzle, the waterjet instrument, the nozzle molding method, and the waterjet instrument molding method of the present invention will be further described in detail in fifteen specific embodiments, and the benefits thereof.
  • the nozzle and the water jet tool are mainly used for various surgical minimally invasive surgery or an object to be cut or perforated, and a high-pressure liquid is introduced therein as an example.
  • a high-pressure liquid is introduced therein as an example.
  • this does not constitute a limitation of the invention.
  • the nozzle and the water jet device work in the same manner and have the same advantages as when the high-pressure liquid is introduced, but the purpose of use is different.
  • the high-pressure liquid when the liquid is a high-pressure liquid, includes a high-pressure water stream or a high-pressure physiological saline stream or other high-pressure liquid stream, and the type of the high-pressure liquid in the nozzle is flexibly selected according to the kind or physicochemical property of the object to be cut when the nozzle is operated.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the elbow portion 112 is a 180-degree elbow, and the injection hole 12 is formed on the convex sealing head 113c.
  • the difference between the two structural embodiments is mainly It is in the shape of the convex head 113c.
  • the structure of the nozzle 1 provided in this embodiment includes: an inlet pipe 11 and a nozzle hole 12 for providing a flow path of high-pressure liquid to the injection hole 12, and the inlet pipe 11 is near.
  • the end is provided with a spray hole 12, and the distal end is connected to a high-pressure liquid supply source, and the high-pressure liquid flows from the liquid inlet pipe 11 to the spray hole 12; the spray hole 12 is used to form the liquid jet 12a to be ejected when the high-pressure liquid flows.
  • the inlet tube 11 includes a distal straight tube portion 111, an elbow portion 112, and a proximal straight tube portion 113.
  • the distal straight tube portion 111, the elbow portion 112, and the proximal straight tube portion 113 each have a tube wall. And the inner cavity of the tube, when the nozzle 1 is in operation, the high-pressure liquid continuously flows from the distal lumen portion 111, the elbow portion 112, and the inner lumen of the proximal straight tube portion 113 to the injection hole 12, and forms various required portions through the injection hole 12. Different shapes of liquid jets 12a are ejected.
  • the distal straight tube portion 111 has a first liquid inlet port 111a and a liquid outlet port 111b.
  • the distal straight tube portion 111 preferably adopts a straight pipe.
  • the first liquid inlet port 111a and the first liquid inlet port 111a are The liquid outlet 111b is facing right, the straight pipe can ensure the shortest stroke of the high pressure liquid in the inner lumen of the distal straight pipe portion 111, and avoid the loss of high pressure liquid water flow;
  • the first liquid inlet 111a is used to connect the external high pressure liquid supply source such as high
  • the pressure pump, the first liquid inlet 111a is in fluid communication with the high pressure pump through a high pressure liquid delivery passage such as a pressure tube, and the high pressure generated by the high pressure liquid can cause the nozzle 1 to perform various surgical minimally invasive surgery or various other objects.
  • the action of cutting, punching, etc. will be understood by those skilled in the art, when the nozzle 1 is used in various surgical minimally invasive procedures, many types of high pressure pumps can be applied in this embodiment, including but not limited to piston pumps and The diaphragm pump; the liquid outlet 111b is for communicating the elbow portion 112, and delivers the high-pressure liquid flowing through the distal straight tube portion 111 to the elbow portion 112.
  • the elbow portion 112 has two open ends 112a, one open end 112a communicates with the liquid outlet 111b of the distal straight tube portion 111, and the other open end portion 112a communicates with the proximal straight tube portion 113;
  • the elbow portion 112 communicates with the distal straight tube portion 111 and the proximal straight tube portion 113 by using the 180 degree elbow shown in Figs. 3 and 4, which is advantageous for recovery of high pressure liquid.
  • the proximal straight tube portion 113 has a second liquid inlet 113a and a convex head 113c.
  • the high pressure liquid flows through the curved portion 112, it flows into the proximal straight tube portion 113 through the second liquid inlet 113a, and the proximal straight tube portion 113
  • a straight pipe is used, and when the proximal straight pipe portion 113 is a straight pipe, the convex head 113c is opposed to the second liquid inlet 113a; the second liquid inlet 113a is connected to the other open end 112a of the curved pipe portion 112.
  • the convex surface seal 113c is shaped such that the high pressure liquid can smoothly transition to the injection hole 12 when flowing through the convex surface seal 113c, and the injection hole 12 is formed on the convex surface of the convex surface seal 113c, and the high pressure liquid smoothly transitions to the injection hole 12, Improve the utilization of high pressure liquids and avoid excessive high pressure liquid loss.
  • the so-called convex head refers to the fact that when any two points on the head geometry are connected, all the open line segments formed are inside the head geometry, or when any two points on the head geometry are connected, Of all the open line segments formed, a portion of the open line segment is inside the head geometry and the remaining portion of the open line segment is on the surface of the head geometry.
  • the convex surface of the convex surface seal 113c is formed with an injection hole 12, and the injection hole 12 must have a suitable shape, such as a circular cross section, an elliptical cross section or a rectangular cross section or other sectional shape, so that the high pressure liquid flows through the injection hole 12 .
  • the liquid jet 12a can be formed in a different shape suitable for a specific need, and the liquid jet 12a can be used for cutting, ablating, peeling or removing various tissues or organs of a patient's body in a surgical minimally invasive surgery, or for performing cutting of other objects to be cut. Or punching action.
  • the size of the orifice 12 is designed according to the amount of liquid jet 12a required for the nozzle 1 to operate.
  • the distal straight tube portion 111, the elbow portion 112, and the proximal straight tube portion 113 may sequentially form the inlet tube 11 by welding, or the distal straight tube portion 111, the elbow portion 112, and the proximal straight tube.
  • the portion 113 is integrally formed to form the liquid inlet tube 11, or alternatively, the liquid inlet tube 11 including the distal straight tube portion 111, the curved tube portion 112, and the proximal straight tube portion 113 is formed by a bending process of the tube.
  • the above three inlet tubes 11 are formed in such a manner that the central axes of the distal straight tube portion 111, the elbow portion 112 and the proximal straight tube portion 113 in the formed inlet tube 11 are sequentially connected one after another. And form a U-shaped or approximate U-shaped.
  • the convex head 113c includes a conical head; the nozzle hole 12 is formed on the cone top of the conical head and is located on the central axis of the proximal straight tube portion 113, as shown in FIG.
  • the conical head is preferably a conical head, the height of the conical head and the taper angle design must be adapted to the specific working needs of the nozzle 1.
  • the convex surface seal 113c includes: a circular arc surface sealing head, and the circular arc surface sealing head comprises: a hemispherical sealing head, a spherical crown sealing head, an elliptical sealing head or a butterfly sealing head; the injection hole 12 is formed on the circular arc
  • the center of the face seal is located on the central axis of the proximal straight pipe portion 113, as shown in FIG.
  • the radius of curvature of the hemispherical head, the spherical crown, the elliptical head and the butterfly head must be designed to fit the nozzle 1 Work required.
  • the injection hole 12 may be formed by directly forming a micro hole on the convex surface of the convex surface seal 113c, or may be perforated on the convex surface of the convex surface seal 113c, and then the injection hole 12 may be installed in the hole.
  • the reason why the formed nozzle hole 12 is located on the central axis of the proximal straight tube portion 113 is because the high pressure liquid can flow more toward the nozzle hole 12 when the high pressure liquid flows into the nozzle hole 12 in the tube portion of the proximal straight tube portion 113.
  • the proximal straight tube portion 113 refers to a straight tube in the liquid inlet tube 11 suitable for performing a corresponding cutting action on the patient or the object to be cut when the nozzle 1 is in operation
  • the distal straight tube portion 111 refers to When the nozzle 1 is in operation, the liquid inlet tube 11 is away from the patient or another straight tube to be cut.
  • the inlet pipe 11 can be made of various materials, and no matter which material is selected as the inlet pipe 11, and the inlet pipe 11 is formed in any of the above manners, when the high-pressure liquid is introduced, the inlet pipe 11 must have Sufficient compressive strength, so that when the nozzle 1 is in operation, the high pressure liquid having the pressure required for operation can be delivered to the injection hole 12, so that the injection hole 12 forms the liquid jet 12a, and the pressure resistance of the inlet pipe 11 can be equal to or greater than
  • the pressure of the high-pressure liquid used when the nozzle 1 is operated is preferably greater than the pressure of the high-pressure liquid used when the nozzle 1 is operated, and the pressure of the high-pressure liquid used to form the liquid jet 12a when the nozzle 1 is in operation depends on the design of the injection hole 12 and remains to be The hardness or strength of a tissue or object that is cut, ablated, or eliminated.
  • the inlet tube 11 can be a circular tube, an elliptical tube, a square tube or other shaped tube
  • the nozzle 1 of the above structure is formed as follows:
  • the nozzle 1 includes a liquid inlet pipe 11 and a spray hole 12 corresponding to the structure of the nozzle 1 in this example.
  • the nozzle 1 molding method includes: the inlet pipe 11 molding, the convex sealing head 113c molding, and the injection hole 12 molding, specifically:
  • the liquid outlet 111b of the distal straight tube portion 111 communicates with one of the open end portions 112a of the curved tube portion 112, and the second liquid inlet 113a of the proximal straight tube portion 113 communicates with the other open end of the curved tube portion 112.
  • the portion 112a forms an inlet pipe 11, and the inlet pipe 11 provides a passage for the liquid to flow to the orifice 12, and preferably, the tube length of the distal straight tube portion 111 is greater than the length of the tube of the proximal straight tube portion 113;
  • a convex head 113c is formed at the other end of the proximal straight tube portion 113 opposite to the second liquid inlet 113a, and the convex head 113c is shaped such that the liquid can smoothly transition to the nozzle hole 12 when flowing through the convex head 113c. ;
  • the injection hole 12 is formed on the convex surface of the convex head 113c, and the injection hole 12 causes the liquid jet 12a to be ejected when the liquid flows.
  • the liquid outlet 111b of the distal straight tube portion 111 and the second liquid inlet 113a of the proximal straight tube portion 113 are respectively connected to the two open end portions 112a of the curved tube portion 112 by welding.
  • the inlet pipe 11 is formed, wherein when the inlet pipe 11 is formed by welding, the inner diameter of the pipe of the distal straight pipe portion 111, the curved pipe portion 112, and the proximal straight pipe portion 113 and the outer diameter of the pipe are preferably uniform; or, integrally formed
  • the integral molding process forms the inlet pipe 11; or, by the bending process of the pipe, the inlet pipe 11 including the distal straight pipe portion 111, the curved pipe portion 112, and the proximal straight pipe portion 113 which are sequentially connected is formed, wherein
  • the tube is heat-treated at a temperature of 400 degrees Celsius to 500 degrees Celsius, preferably 405 degrees Celsius for 10 minutes to 12 minutes, the tube is fixed into a tube having a degree of curvature of 180 degrees, and the tube is quenched in a cooling liquid to form a tube.
  • Liquid tube 11 refers to a specific angle when the tube deviates from its straight shape.
  • the heat treatment temperature and heat treatment time taken during heat treatment are specifically selected according to the material of the tube, the thickness of the tube wall, and the degree of curvature.
  • the elbow portion 112 can also be A connecting pipe member respectively sleeves the liquid outlet 111b of the distal straight pipe portion 111 and the second liquid inlet 113a of the proximal straight pipe portion 113 in the connecting pipe member to form the liquid inlet pipe 11.
  • the convex head 113c is formed first, and the formed convex head 113c is welded to the other end of the proximal straight tube portion 113 opposite to the second liquid inlet 113a.
  • the convex sealing head 113c is specifically formed by: forming a convex sealing head 113c by press forming, demoulding, bevel processing, head shaping and heat treatment, and then welding the convex sealing head 113c to the proximal straight tube portion 113 and the second The opposite end of the liquid inlet 113a; or, by a tube drawing process such as a swimming core drawing process, forming a convex head 113c at the other end of the proximal straight tube portion 113 opposite to the second liquid inlet 113a .
  • the inner and outer surfaces of the convex surface may be polished.
  • the injection hole 12 is formed on the convex surface of the convex surface seal 113c by mechanical drilling, laser drilling or electric discharge drilling, and the injection hole 12 is formed at the center of the convex surface and is located near The straight tube portion 113 is on the central axis.
  • the injection hole 12 may be formed by mechanical drilling, laser drilling or electric spark drilling directly on the convex surface of the convex sealing head 113c, or may be mechanically formed on the convex surface of the convex sealing head 113c. Holes are drilled by drilling, laser drilling or sparking, and then the nozzles 12 are installed in the holes.
  • the flow direction of the high-pressure liquid in the conical head is as shown in FIG. 5, and when the nozzle 1 adopts a circular-arc seal, the high-pressure liquid
  • the flow direction in the circular arc face seal is as shown in Fig. 6.
  • the direction indicated by the dotted line with the arrow is the flow direction of the high pressure liquid, and the high pressure liquid is bent through the 180 degree of the bent pipe portion 112.
  • the flow passage smoothly transitions from the lumen of the proximal straight tube portion 113 to the orifice 12 on the convex surface of the convex closure 113c, thereby effectively reducing the loss of high pressure liquid;
  • the high-pressure liquid flowing along the inner cavity of the proximal straight pipe portion 113 to the injection hole 12 has a tendency to gradually shrink, which can further reduce the loss of high-pressure liquid.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from the nozzle structure in the first embodiment.
  • the elbow portion 112 is a 180-degree elbow
  • the nozzle hole 12 is formed on the tube wall of the proximal straight tube portion 113, and the convex head is formed.
  • 113c forms a spacing.
  • the injection hole 12 may be formed on the inner tube wall or the outer tube wall of the proximal straight tube portion 113.
  • the nozzle molding method in this example is different from the nozzle molding method in the first embodiment in that, in S3, the injection hole 12 is formed on the pipe wall of the proximal straight pipe portion 113, and a gap is formed with the convex seal head 113c.
  • the injection hole 12 may be formed on the inner tube wall or the outer tube wall of the proximal straight tube portion 113.
  • the liquid is smoothly bent along the convex surface seal 113c after being bent by the 180 degree of the curved pipe portion 112, and then, along the proximal straight pipe.
  • the inner lumen of the portion 113 flows smoothly to the injection hole 12, so that a high-pressure liquid smoothly transitions to the injection hole 12, thereby improving the utilization of the high-pressure liquid and avoiding excessive high-pressure liquid loss.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • Figures 7 and 8 show two other structural embodiments of the nozzle 1.
  • the elbow portion 112 is a 90 degree elbow, and the two structural embodiments differ primarily in the shape of the convex closure 113c.
  • the structure of the nozzle 1 provided in this embodiment includes: an inlet pipe 11 and a nozzle hole 12.
  • the inlet pipe 11 includes a distal straight pipe portion 111, a curved pipe portion 112, and a proximal straight pipe portion.
  • the distal straight tube portion 111, the elbow portion 112 and the proximal straight tube portion 113 respectively have a tube wall and a tube lumen, and when the nozzle 1 is in operation,
  • the high pressure liquid continuously flows from the distal lumen portion 111, the elbow portion 112, and the lumen lumen of the proximal straight tube portion 113 to the orifice 12, and through the orifice 12, various liquid jets 12a of different shapes are formed to be ejected.
  • the distal straight tube portion 111 has a first liquid inlet port 111a and a liquid outlet port 111b.
  • the distal straight tube portion 111 preferably adopts a straight pipe.
  • the first liquid inlet port 111a and the first liquid inlet port 111a are The liquid outlet 111b is facing right, the straight pipe can ensure the shortest stroke of the high pressure liquid in the inner lumen of the distal straight tube portion 111, and avoid the loss of high pressure liquid water flow;
  • the first liquid inlet 111a is used to connect the external high pressure liquid supply source, such as The high pressure pump, the first liquid inlet 111a is in fluid communication with the high pressure pump through a high pressure liquid delivery passage such as a pressure tube, and the high pressure generated by the high pressure liquid after the high pressure liquid can cause the nozzle 1 to perform various surgical minimally invasive surgery or various objects.
  • the pump outlet port 111b is configured to communicate the elbow portion 112 to deliver the high pressure liquid flowing through the distal straight tube portion 111 to the elbow portion 112.
  • the elbow portion 112 has two open ends 112a, one open end 112a communicates with the liquid outlet 111b of the distal straight tube portion 111, and the other open end portion 112a communicates with the proximal straight tube portion 113;
  • the elbow portion 112 communicates with the distal straight tube portion 111 and the proximal straight tube portion 113 by using the 90 degree elbow shown in Figs. 7 and 8, which is also advantageous for recovery of high pressure liquid.
  • the proximal straight pipe portion 113 has a second liquid inlet 113a and a convex head 113c.
  • the high pressure liquid flows through the curved pipe portion 112, it flows into the proximal straight pipe portion 113 through the second liquid inlet 113a, and the straight pipe portion 113 is preferably Straight pipe, when the proximal straight pipe portion 113 is a straight pipe, the convex head 113c is opposite to the second liquid inlet 113a; the second liquid inlet 113a is connected to the other open end 112a of the curved portion 112;
  • the convex sealing head 113c is shaped such that the high pressure liquid can smoothly transition to the injection hole 12 when flowing through the convex sealing head 113c.
  • the injection hole 12 is formed in the inner tube wall of the proximal straight tube portion 113, and has a space between the convex sealing head 113c and the convex sealing head 113c.
  • the spacing, forming the spacing, the high-pressure liquid flows smoothly along the inner wall of the convex sealing head 113c, and then smoothly flows toward the injection hole 12 along the inner side of the pipe wall of the proximal straight pipe portion 113 corresponding to the spacing, thereby achieving high-pressure liquid smoothing. Transition to the orifice 12 increases the utilization of the high pressure liquid and avoids excessive high pressure liquid loss.
  • the distance between the injection hole 12 and the convex surface seal 113c is smaller than the distance between the injection hole 12 and the second liquid inlet 113a.
  • An injection hole 12 is formed in the inner tube wall of the proximal straight pipe portion 113, and the injection hole 12 must have a suitable shape, such as a circular cross section, an elliptical cross section or a rectangular cross section or other sectional shape, so that high pressure liquid flows through the injection hole.
  • a suitable shape such as a circular cross section, an elliptical cross section or a rectangular cross section or other sectional shape, so that high pressure liquid flows through the injection hole.
  • a different shape of liquid jet 12a can be formed, which can be used for cutting, ablating, peeling or removing various tissues or organs of a patient's body during surgical minimally invasive surgery, or for performing other objects to be cut. Cutting or punching action.
  • the injection hole 12 may be formed by directly forming a micro hole in the inner tube wall of the proximal straight tube portion 113, or may be perforated in the inner tube wall of the proximal straight tube portion 113, and then the injection hole 12 is installed in the hole.
  • the size of the orifice 12 is designed according to the amount of liquid jet 12a required for the nozzle 1 to operate.
  • the distal straight tube portion 111, the elbow portion 112, and the proximal straight tube portion 113 may sequentially form the inlet tube 11 by welding, or the distal straight tube portion 111, the elbow portion 112, and the proximal straight tube.
  • the portion 113 is integrally formed to form the liquid inlet tube 11, or alternatively, the liquid inlet tube 11 including the distal straight tube portion 111, the curved tube portion 112, and the proximal straight tube portion 113 is formed by a bending process of the tube.
  • the above three inlet tubes 11 are formed in such a manner that the central axes of the distal straight tube portion 111, the elbow portion 112 and the proximal straight tube portion 113 in the formed inlet tube 11 are sequentially connected one after another. And constitute an approximate right angle.
  • the convex head 113c includes a conical head; the conical top of the conical head is located on the central axis of the proximal straight tube portion 113.
  • the conical head is preferably a conical head, the height of the conical head and the taper angle design must be adapted to the specific working needs of the nozzle 1.
  • the convex surface seal 113c includes: a circular arc surface seal including: a hemispherical seal head, a spherical crown seal head, an elliptical head or a butterfly head; a hemisphere The head, the spherical crown head, the elliptical head and the butterfly head; the center of the arc face head is located on the central axis of the proximal straight tube portion 113.
  • the radius of curvature design of the hemispherical head, the spherical crown, the elliptical head, and the butterfly head must be adapted to the specific needs of the nozzle 1.
  • the proximal straight tube portion 113 refers to a straight tube in the liquid inlet tube 11 suitable for performing a corresponding cutting action on the patient or the object to be cut when the nozzle 1 is in operation
  • the distal straight tube portion 111 refers to When the nozzle 1 is in operation, the liquid inlet tube 11 is away from the patient or a straight tube to be cut.
  • the inlet pipe 11 can be made of various materials, and no matter which material is selected as the inlet pipe 11, and the inlet pipe 11 is formed in any of the above manners, the inlet pipe 11 must have sufficient compressive strength to When the nozzle 1 is operated, the high pressure liquid having the pressure required for operation can be delivered to the injection hole 12, so that the injection hole 12 forms the liquid jet 12a, and the pressure resistance of the inlet pipe 11 can be equal to or greater than the high pressure used when the nozzle 1 is operated.
  • the pressure of the liquid is preferably greater than the pressure of the high pressure liquid used when the nozzle 1 is in operation, and the pressure of the high pressure liquid used to form the liquid jet 12a when the nozzle 1 is in operation depends on the design of the orifice 12 and the tissue to be cut, ablated or eliminated. Or the hardness or strength of the object.
  • the inlet tube 11 can be a circular tube, an elliptical tube, a square tube or other shaped tube.
  • the nozzle 1 of the above structure is formed as follows:
  • the nozzle 1 includes a liquid inlet pipe 11 and a spray hole 12 corresponding to the structure of the nozzle 1 in this example.
  • the nozzle 1 molding method includes: the inlet pipe 11 molding, the convex sealing head 113c molding, and the injection hole 12 molding, specifically:
  • the liquid outlet 111b of the distal straight tube portion 111 communicates with one of the open end portions 112a of the curved tube portion 112, and the second liquid inlet 113a of the proximal straight tube portion 113 communicates with the other open end of the curved tube portion 112.
  • the portion 112a forms an inlet pipe 11, and the inlet pipe 11 provides a passage for the high-pressure liquid to flow to the injection hole 12; wherein, preferably, the distal straight portion 111 has a longer tube length than the proximal straight portion 113;
  • the injection hole 12 is formed on the inner pipe wall of the proximal straight pipe portion 113, and the injection hole 12 ejects the liquid jet 12a when the high-pressure liquid flows.
  • the liquid outlet 111b of the distal straight tube portion 111 and the second liquid inlet 113a of the proximal straight tube portion 113 are respectively connected to the two open end portions 112a of the curved tube portion 112 by welding.
  • the inlet pipe 11 is formed, wherein when the inlet pipe 11 is formed by welding, the inner diameter of the pipe of the distal straight pipe portion 111, the curved pipe portion 112, and the proximal straight pipe portion 113 and the outer diameter of the pipe are preferably uniform; or, integrally formed
  • the integral molding process forms the inlet pipe 11; or, by the bending process of the pipe, the inlet pipe 11 including the distal straight pipe portion 111, the curved pipe portion 112, and the proximal straight pipe portion 113 which are sequentially connected is formed, wherein In the bending process, the tube will be in the range of 400 degrees Celsius to 500 degrees Celsius.
  • the temperature is preferably 405 ° C for 10 minutes to 12 minutes of heat treatment
  • the tube is fixed into a tube having a degree of curvature of 90 degrees
  • the tube is quenched in a cooling liquid to form an inlet tube 11
  • the so-called bending degree refers to tube deviation
  • the specific angle at the time of the straight form, the heat treatment temperature and the heat treatment time taken during the heat treatment are specifically selected according to the material of the tube, the thickness of the tube wall, and the degree of curvature.
  • elbow portion 112 can also be a connecting pipe member, respectively, the liquid inlet port 111b of the distal straight pipe portion 111 and the second liquid inlet port 113a of the proximal straight pipe portion 113 are sleeved in the connecting pipe member to form a liquid inlet.
  • Tube 11 can also be a connecting pipe member, respectively, the liquid inlet port 111b of the distal straight pipe portion 111 and the second liquid inlet port 113a of the proximal straight pipe portion 113 are sleeved in the connecting pipe member to form a liquid inlet. Tube 11.
  • the convex head 113c is formed first, and the formed convex head 113c is welded to the other end of the proximal straight tube portion 113 opposite to the second liquid inlet 113a.
  • the convex sealing head 113c is specifically formed by: forming a convex sealing head 113c by press forming, demoulding, bevel processing, head shaping and heat treatment, and then welding the convex sealing head 113c to the proximal straight tube portion 113 and the second The opposite end of the liquid inlet 113a; or, by a tube drawing process such as a swimming core drawing process, forming a convex head 113c at the other end of the proximal straight tube portion 113 opposite to the second liquid inlet 113a After the convex sealing head 113c is formed, the inner and outer surfaces of the convex surface may be polished.
  • the injection hole 12 is formed on the inner tube wall of the proximal straight tube portion 113 by mechanical drilling, laser drilling or electric spark drilling, and the distance between the injection hole 12 and the convex surface portion 113c is less than or It is equal to the distance between the injection hole 12 and the second liquid inlet 113a.
  • the injection hole 12 may be formed by mechanical drilling, laser drilling or electric spark drilling directly on the convex surface of the convex sealing head 113c, or may be mechanically formed on the convex surface of the convex sealing head 113c. Holes are drilled by drilling, laser drilling or sparking, and then the nozzles 12 are installed in the holes.
  • the flow direction of the high-pressure liquid in the conical head is as shown in FIG. 9.
  • the nozzle 1 adopts a circular-arc seal the high-pressure liquid
  • the flow direction in the circular arc face seal is as shown in FIG. 10.
  • the direction indicated by the dotted line with an arrow is the flow direction of the high pressure liquid, and the high pressure liquid is bent through the 90 degree of the bent pipe portion 112.
  • the flow passage smoothly transitions from the lumen of the proximal straight tube portion 113 to the orifice 12 on the inner tube wall of the proximal straight tube portion 113, thereby effectively reducing the pressure of the high pressure liquid.
  • the inner tube wall of the proximal straight tube portion 113 refers to the tube wall of the proximal straight tube portion 113 facing the distal straight tube portion 111.
  • the first embodiment adopts a 180-degree elbow.
  • a 90-degree elbow is used.
  • the molding process of the 90-degree elbow nozzle is more complicated.
  • the injection hole 12 is formed on the convex sealing head 113c.
  • the injection hole 12 is formed on the inner pipe wall of the proximal straight pipe portion 113, regardless of whether the injection hole 12 is formed in the convex sealing head.
  • 113c is also the inner tube wall of the proximal straight tube portion 113, which enables a smooth transition of the high pressure liquid to the orifice 12, reducing the loss of high pressure liquid.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • This example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from the nozzle structure in the third embodiment.
  • the elbow portion 112 is a 90-degree elbow
  • the nozzle hole 12 is formed on the outer tube wall of the proximal straight tube portion 113, and is sealed with the convex surface.
  • the head 113c forms a pitch.
  • the nozzle molding method in this example is different from the nozzle molding method in the third embodiment.
  • the injection hole 12 is formed on the outer tube wall of the proximal straight tube portion 113, and a gap is formed with the convex surface seal 113c.
  • the liquid is bent along the convex portion of the curved pipe portion 112, and then along the convex sealing head.
  • 113c smoothly flows, and then smoothly flows along the inner tube of the proximal straight tube portion 113 to the injection hole 12, thereby smoothly transitioning the high-pressure liquid to the injection hole 12, improving the utilization of the high-pressure liquid and avoiding excessive high-pressure liquid loss.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • This example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from the nozzle structure in the third embodiment in that when the elbow portion 112 is a 90-degree elbow, the injection hole 12 is formed on the convex surface of the convex surface seal 113c.
  • the orifice 12 is preferably located at the center of the convex closure 113c.
  • the nozzle molding method in this example is different from the nozzle molding method in the third embodiment in that the injection hole 12 is formed in the convex seal head 113c in S3.
  • this example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from that in the first embodiment.
  • the elbow portion 112 is an elbow having an arbitrary degree of curvature between 90 degrees and 180 degrees (in this example, the curvature of the elbow portion 112 is not Includes 90 degrees and 180 degrees).
  • the nozzle molding method in this example is different from the nozzle molding method in the first embodiment.
  • the tube in the bending process, the tube is heat-treated at a temperature of 400 to 500 degrees Celsius, preferably 405 degrees Celsius for 10 minutes to 12 minutes.
  • the tube is fixed to a tube having a matching degree of curvature, and the tube is quenched in a cooling liquid to form an inlet tube 11.
  • the flow direction of the high-pressure liquid in the conical head is as shown in FIG. 14.
  • the flow direction of the high pressure liquid in the circular arc surface sealing head is as shown in FIG. 14.
  • the direction indicated by the dotted line with an arrow is the high pressure liquid flowing direction.
  • the high-pressure liquid is bent at a matching angle by the curved portion 112, and the flow passage smoothly transitions from the inner tube lumen of the proximal straight tube portion 113 to the orifice surface on the convex surface of the convex surface seal 113c during the flow to the injection hole 12. 12, thereby effectively reducing the loss of high-pressure liquid; and, along the proximal end of the tube portion 113, the high-pressure liquid flowing to the injection hole 12 has a tendency to gradually shrink, which can further reduce the loss of high-pressure liquid.
  • the curvature of the elbow portion 112 is between 90 degrees and 180 degrees, and the molding process is simpler and easier than the 180 degree elbow, especially when the nozzle and the waterjet device are used in surgical minimally invasive surgery. For a nozzle having a size of only a few millimeters as a whole, the forming process of the nozzle in this embodiment is more advantageous.
  • this example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from that in the third embodiment.
  • the elbow portion 112 is an elbow having an arbitrary degree of curvature between 0 and 90 degrees (in this example, the curvature of the elbow portion 112 is not Includes 90 degrees).
  • the nozzle molding method in this example is different from the nozzle molding method in the third embodiment.
  • the tube in the bending process, the tube is heat-treated at a temperature of 400 to 500 degrees Celsius, preferably 405 degrees Celsius for 10 minutes to 12 minutes.
  • the tube is fixed to a tube having a matching degree of curvature, and the tube is quenched in a cooling liquid to form an inlet tube 11.
  • the elbow portion 112 is an elbow having an arbitrary angle between 0 degrees and 90 degrees
  • the flow direction of the high pressure liquid in the conical head is as shown in FIG.
  • the flow direction of the high pressure liquid in the circular arc head is as shown in Fig. 18.
  • the direction indicated by the dotted line with the arrow is the flow direction of the high pressure liquid, and the high pressure liquid passes through the bend.
  • the tube portion 112 matches the angle of the bend.
  • the flow passage smoothly transitions from the tube lumen of the proximal straight tube portion 113 to the orifice 12 on the inner tube wall of the proximal straight tube portion 113. Therefore, thereby effectively reducing the loss of high pressure liquid.
  • the curvature of the elbow portion 112 is between 0 and 90 degrees, and the molding process is simpler and easier than the 180 degree elbow, the 90 degree elbow, and the elbow with a curvature of 90 to 180 degrees.
  • the nozzle forming process of the embodiment has the advantage of being more obvious for the nozzle having a size of only a few millimeters as a whole.
  • This embodiment provides a nozzle and a nozzle molding method of another structure.
  • the nozzle structure in this example is different from the nozzle structure in the sixth embodiment.
  • the elbow portion 112 includes an elbow at any angle between 90 degrees and 180 degrees
  • the nozzle hole 12 is formed in the proximal straight tube portion.
  • a wall of 113 is formed and spaced apart from the convex head 113c.
  • the injection hole 12 may be formed on the inner tube wall or the outer tube wall of the proximal straight tube portion 113.
  • the nozzle molding method in this example is different from the nozzle molding method in the sixth embodiment in that, in S3, the injection hole 12 is formed on the pipe wall of the proximal straight pipe portion 113, and a gap is formed with the convex seal head 113c.
  • the injection hole 12 may be formed on the inner tube wall or the outer tube wall of the proximal straight tube portion 113.
  • the injection hole 12 is formed on the pipe wall of the proximal straight pipe portion 113, after the liquid is bent at the matching angle of the curved pipe portion 112, the liquid flows smoothly along the convex surface seal 113c, and then along the proximal straight pipe.
  • the inner lumen of the portion 113 flows smoothly to the injection hole 12, so that a high-pressure liquid smoothly transitions to the injection hole 12, thereby improving the utilization of the high-pressure liquid and avoiding excessive high-pressure liquid loss.
  • This embodiment provides a nozzle and a nozzle molding method of another structure.
  • the nozzle structure in this example is different from the nozzle structure in the seventh embodiment.
  • the elbow portion 112 includes an elbow having an angle of any degree between 0 and 90 degrees
  • the nozzle hole 12 is formed in the proximal straight tube portion.
  • the outer tube wall of 113 forms a distance from the convex head 113c.
  • the nozzle molding method in this example is different from the nozzle molding method in the seventh embodiment in that, in S3, the injection hole 12 is formed on the outer tube wall of the proximal straight tube portion 113, and a gap is formed with the convex surface seal 113c.
  • the liquid is smoothly bent along the convex surface of the convex portion 113c after being bent by the matching angle of the curved portion 112, and then straight along the proximal end.
  • the tube lumen of the tube portion 113 flows smoothly to the injection hole 12, so that a high-pressure liquid smoothly transitions to the injection hole 12, thereby improving the utilization of the high-pressure liquid and avoiding excessive high-pressure liquid loss.
  • This example provides a nozzle and nozzle forming method of another configuration.
  • the nozzle structure in this example is different from the nozzle structure in the seventh embodiment in that the nozzle hole 12 is formed on the convex head 113c when an elbow having an arbitrary degree of curvature between 0 and 90 degrees is included.
  • the orifice 12 is formed on the convex closure 113c of the proximal straight tube portion 113, the orifice 12 is preferably located at the center of the convex closure 113c.
  • the nozzle molding method in this example is different from the nozzle molding method in the seventh embodiment in that the injection hole 12 is formed in the convex seal head 113c in S3.
  • the high-pressure liquid smoothly transitions to the injection hole 12, and the flow passage is gradually reduced, thereby improving the utilization of the high-pressure liquid.
  • the nozzle 1 adopts a conical head and a liquid returning tube. 21 is in contact with the distal straight tube portion 111; in the waterjet device 2 shown in Fig. 20, the nozzle 1 adopts a circular arc surface sealing head, and the liquid returning tube 21 is in contact with the distal straight tube portion 111; Fig. 21
  • the nozzle 1 adopts a conical head, and the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111; in the waterjet device 2 shown in Fig. 22, the nozzle 1 is formed by a circular arc surface seal. The head, the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111.
  • the waterjet device 2 in this example includes a nozzle 1 and a liquid return pipe 21.
  • the liquid return pipe 21 has a jet recovery port 21a opposed to the injection hole 12, wherein the jet recovery port 21a receives the liquid jet 12a ejected from the injection hole 12 when the water jet instrument 2 is operated.
  • the inner diameter of the liquid return pipe 21 depends on the divergence angle of the liquid jet 12a ejected from the injection hole 12 and the distance between the injection hole 12 and the jet recovery port 21a, so that the liquid jet 12a ejected from the injection hole 12 can all flow to the return pipe.
  • the orifice 12 should also preferably be aligned with the center of the jet recovery port 21a.
  • the liquid return tube 21 and the distal straight tube portion 111 can be inscribed internally, please refer to FIGS. 19 and 20; or, referring to FIGS. 21 and 22, the liquid return tube 21 and the distal straight tube portion 111 can also be connected to each other. .
  • the waterjet tool 2 molding method includes: a nozzle 1 molding method, wherein the nozzle 1 molding method is described in detail in the first embodiment, and no further details are provided in this example; in addition, the waterjet tool 2 molding method in this example further includes After the nozzle 1 is molded, the position of the liquid return pipe 21 is positioned so that the liquid returning pipe 21 after the positioning is operated, the jet recovery port 21a of the liquid return pipe 21 can receive the liquid discharged from the injection hole 12. Jet 12a.
  • the liquid return tube 21 when the position of the liquid return tube 21 is positioned, the liquid return tube 21 is in contact with the distal straight tube portion 111; or, referring to Figures 21 and 22, the return tube 21 is When the position is positioned, the liquid return tube 21 is tangentially connected to the distal straight tube portion 111.
  • the liquid return pipe 21 and the distal straight pipe portion 111 are inscribed by the welding portion, wherein the length of the welded portion is less than or equal to the length of the liquid return pipe 21; when the liquid return pipe 21 and the distal straight pipe portion 111
  • the welding section is circumscribed, wherein the length of the welding section is less than or equal to the length of the liquid return pipe 21.
  • the distal straight pipe portion 111 When the liquid return pipe 21 is in contact with the distal straight pipe portion 111, the distal straight pipe portion 111 is welded in parallel to the inner wall of the liquid return pipe 21 by internal welding, when the liquid return pipe 21 and the distal straight pipe portion are When the outer cutting is performed, the distal straight pipe portion 111 is welded in parallel to the outer wall of the liquid return pipe 21 by external welding; and the liquid return pipe 21 and the distal straight pipe portion 111 are tangentially connected to each other.
  • the inner tube of the liquid tube 21 and the distal straight tube portion 111 are connected to each other so that the overall size of the water jet instrument 2 is reduced. Only the alignment of the liquid return tube 21 and the injection hole 12 is required, and a suitable size of the liquid return tube 21 is designed.
  • the tube 11 is inserted into the liquid return tube 21.
  • the nozzle 1 adopts a conical head and a liquid return tube. 21 is in contact with the distal straight tube portion 111; in the waterjet device 2 shown in Fig. 24, the nozzle 1 adopts a circular arc surface sealing head, and the liquid returning tube 21 is in end-to-end contact with the distal straight tube portion 111; In the illustrated waterjet device 2, the nozzle 1 adopts a conical head, and the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111; in the waterjet device 2 shown in Fig. 26, the nozzle 1 is formed by a circular arc surface seal. The head, the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111.
  • the waterjet device 2 in this example includes a nozzle 1 and a liquid return pipe 21.
  • the structure of the nozzle 1 is described in detail in the third embodiment of the present invention, which is not specifically described in this example.
  • the liquid return pipe 21 has a jet recovery port 21a opposed to the injection hole 12, wherein the jet recovery port 21a receives the liquid jet 12a ejected from the injection hole 12 when the water jet instrument 2 is operated.
  • the inner diameter of the liquid return pipe 21 depends on the divergence angle of the liquid jet 12a ejected from the injection hole 12 and the distance between the injection hole 12 and the jet recovery port 21a, so that the liquid jet 12a ejected from the injection hole 12 can all flow to the return pipe.
  • the orifice 12 should also preferably be aligned with the center of the jet recovery port 21a.
  • the liquid return tube 21 and the distal straight tube portion 111 can be inscribed internally, please refer to FIGS. 23 and 24; or, referring to FIGS. 25 and 26, the liquid return tube 21 and the distal straight tube portion 111 can also be connected to each other. .
  • the waterjet tool 2 molding method includes: the nozzle 1 molding method, wherein the nozzle 1 molding method is detailed in the third embodiment, and the description will not be repeated in this example; in addition, the waterjet device 2 molding method in this example further includes After the nozzle 1 is molded, the position of the liquid return pipe 21 is positioned so that the liquid returning pipe 21 after the positioning is operated, the jet recovery port 21a of the liquid return pipe 21 can receive the liquid discharged from the injection hole 12. Jet 12a.
  • the liquid return tube 21 when the position of the liquid return tube 21 is positioned, the liquid return tube 21 is in contact with the distal straight tube portion 111; or, referring to Figures 25 and 26, for the liquid return tube 21 When the position is positioned, the liquid return tube 21 is tangentially connected to the distal straight tube portion 111.
  • the liquid return pipe 21 and the distal straight pipe portion 111 are inscribed by the welding portion, wherein the length of the welded portion is less than or equal to the length of the liquid return pipe 21; when the liquid return pipe 21 and the distal straight pipe portion 111
  • the welding section is circumscribed, wherein the length of the welding section is less than or equal to the length of the liquid return pipe 21.
  • FIG. 27-30 are four structural embodiments of the waterjet instrument 2 in the case where the elbow portion 112 is an elbow at any angle between 90 degrees and 180 degrees in the present embodiment, and in the waterjet device 2 shown in FIG.
  • the conical head is used, and the liquid return pipe 21 is in contact with the distal straight pipe portion 111.
  • the nozzle 1 adopts a circular arc face seal, and the liquid return pipe 21 and the distal straight pipe The portion 111 is tangentially connected; in the waterjet device 2 shown in Fig.
  • the nozzle 1 is a conical head, and the liquid return tube 21 is tangentially connected to the distal straight tube portion 111;
  • the nozzle 1 adopts a circular arc-shaped head, and the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111.
  • the waterjet device 2 in this example includes a nozzle 1 and a liquid return pipe 21.
  • the structure of the nozzle 1 is described in detail in the sixth embodiment of the present invention, which is not specifically described in this example.
  • the liquid return pipe 21 has a jet recovery port 21a opposed to the injection hole 12, wherein the jet recovery port 21a receives the liquid jet 12a ejected from the injection hole 12 when the water jet instrument 2 is operated.
  • the inner diameter of the liquid return pipe 21 depends on the divergence angle of the liquid jet 12a ejected from the injection hole 12 and the distance between the injection hole 12 and the jet recovery port 21a, so that the liquid jet 12a ejected from the injection hole 12 can all flow to the return pipe.
  • the orifice 12 should also preferably be aligned with the center of the jet recovery port 21a.
  • Liquid return The tube 21 and the distal straight tube portion 111 can be tangentially connected, please refer to FIGS. 23 and 24; or, referring to FIGS. 25 and 26, the liquid return tube 21 and the distal straight tube portion 111 can also be tangentially connected.
  • the waterjet tool 2 molding method includes: the nozzle 1 molding method, wherein the nozzle 1 molding method is described in detail in the sixth embodiment, which will not be described in detail in this example; in addition, the waterjet tool 2 molding method in this example also includes After the nozzle 1 is molded, the position of the liquid return pipe 21 is positioned so that the liquid returning pipe 21 after the positioning is operated, the jet recovery port 21a of the liquid return pipe 21 can receive the liquid discharged from the injection hole 12. Jet 12a.
  • the liquid return tube 21 when the position of the liquid return tube 21 is positioned, the liquid return tube 21 is in contact with the distal straight tube portion 111; or, referring to Figures 29 and 30, for the liquid return tube 21 When the position is positioned, the liquid return tube 21 is tangentially connected to the distal straight tube portion 111.
  • the liquid return pipe 21 and the distal straight pipe portion 111 are inscribed by the welding portion, wherein the length of the welded portion is less than or equal to the length of the liquid return pipe 21; when the liquid return pipe 21 and the distal straight pipe portion 111
  • the welding section is circumscribed, wherein the length of the welding section is less than or equal to the length of the liquid return pipe 21.
  • Embodiment 14 is a diagrammatic representation of Embodiment 14:
  • 31-34 are four structural embodiments of the waterjet device 2 in the case where the elbow portion 112 is an elbow at any angle between 0 and 90 degrees, and the waterjet device 2 is shown in FIG.
  • the nozzle 1 adopts a conical head, and the liquid return pipe 21 is in contact with the distal straight pipe portion 111.
  • the nozzle 1 adopts a circular arc face seal, and the liquid return pipe 21 and the far pipe
  • the straight tube portion 111 is tangentially connected; in the water jet instrument 2 shown in Fig.
  • the nozzle 1 is a conical head, and the liquid return tube 21 is tangentially connected to the distal straight tube portion 111;
  • the nozzle 1 adopts a circular arc-shaped head, and the liquid return pipe 21 is tangentially connected to the distal straight pipe portion 111.
  • the waterjet device 2 in this example includes a nozzle 1 and a liquid return pipe 21.
  • the structure of the nozzle 1 is described in detail in the seventh embodiment of the present invention, which is not specifically described in this example.
  • the liquid return pipe 21 has a jet recovery port 21a opposed to the injection hole 12, wherein the jet recovery port 21a receives the liquid jet 12a ejected from the injection hole 12 when the water jet instrument 2 is operated.
  • the inner diameter of the liquid return pipe 21 depends on the divergence angle of the liquid jet 12a ejected from the injection hole 12 and the distance between the injection hole 12 and the jet recovery port 21a, so that the liquid jet 12a ejected from the injection hole 12 can all flow to the return pipe.
  • the orifice 12 should also preferably be aligned with the center of the jet recovery port 21a.
  • the liquid return tube 21 and the distal straight tube portion 111 can be inscribed internally, please refer to FIGS. 31 and 32; or, referring to FIGS. 33 and 34, the liquid return tube 21 and the distal straight tube portion 111 can also be connected to each other. .
  • the waterjet tool 2 molding method includes: the nozzle 1 molding method, wherein the nozzle 1 molding method is detailed in the third embodiment, and the description will not be repeated in this example; in addition, the waterjet device 2 molding method in this example further includes After the nozzle 1 is molded, the position of the liquid return pipe 21 is positioned so that the liquid returning pipe 21 after the positioning is operated, the jet recovery port 21a of the liquid return pipe 21 can receive the liquid discharged from the injection hole 12. Jet 12a.
  • the liquid return tube 21 when the position of the liquid return tube 21 is positioned, the liquid return tube 21 is in contact with the distal straight tube portion 111; or, referring to Figures 33 and 34, for the liquid return tube 21 When the position is positioned, the liquid return tube 21 is tangentially connected to the distal straight tube portion 111.
  • the liquid return pipe 21 and the distal straight pipe portion 111 are inscribed by the welding portion, wherein the length of the welded portion is less than or equal to the length of the liquid return pipe 21; when the liquid return pipe 21 and the distal straight pipe portion 111
  • the outer portion of the fusion welded portion is tangentially connected, wherein the length of the welded portion is less than or equal to The length of the liquid pipe 21.
  • This example provides another structure of waterjet instrument and waterjet instrument molding method.
  • the waterjet instrument structure in this example is different from the waterjet instrument structure in the thirteenth embodiment.
  • the waterjet instrument in this example includes the nozzle structure of the eighth embodiment.
  • the waterjet instrument molding method in this example is different from the waterjet instrument molding method in the thirteenth embodiment.
  • the waterjet instrument molding method in this example includes the nozzle molding method in the eighth embodiment.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne une buse, comprenant un tube d'entrée de liquide (11) et un trou de buse (12). Le tube d'entrée de liquide (11) comprend : une partie tube droit distale (111) ayant une première entrée de liquide (111a) et une sortie de liquide (111b) ; une partie tube coudé (112) ayant deux extrémités ouvertes (112a), l'une des extrémités étant en communication avec la sortie de liquide (111b) ; et une partie tube droit proximale (113) ayant une seconde entrée de liquide (113a) et une tête d'étanchéité convexe (113c). La seconde entrée de liquide (113a) est en communication avec l'autre extrémité de la partie tube coudé (112). Le trou de buse (12) est moulé dans une surface convexe de la tête d'étanchéité convexe (113c). Le tube d'entrée de liquide (11) fournit un canal, à travers lequel le liquide s'écoule vers le trou de buse (12). Lors de l'écoulement à travers la tête d'étanchéité convexe (113c), le liquide peut être en transition douce vers le trou de buse (12), et le liquide s'écoulant à travers le trou de buse (12) est formé en un jet de liquide à éjecter à partir du trou de buse (12). Dans un autre exemple, le trou de buse (12) est moulé au niveau d'une paroi de tube de la partie tube droit proximale (113), et est espacé de la tête d'étanchéité convexe (113c) par un intervalle. L'invention concerne également un scalpel à jet d'eau, un procédé de moulage de buse et un procédé de moulage de scalpel à jet d'eau. Une transition douce d'un canal d'écoulement à partir d'une cavité de tube interne d'une partie tube droit proximale à un trou de buse est obtenue dans le processus de circulation de liquide vers le trou de buse, ce qui permet de réduire efficacement la perte de liquide.
PCT/CN2016/105767 2016-09-27 2016-11-14 Buse, scalpel à jet d'eau, procédé de moulage de buse et procédé de moulage de scalpel à jet d'eau Ceased WO2018058757A1 (fr)

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CN201610859120.6A CN107865683A (zh) 2016-09-27 2016-09-27 喷嘴、水刀器械、喷嘴成型方法及水刀器械成型方法
CN201610859120.6 2016-09-27

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CN110664480A (zh) * 2019-09-30 2020-01-10 严立 一种喷气剥离电切头及喷气剥离电切装置
CN110711024B (zh) * 2019-09-30 2024-05-17 首都医科大学附属北京同仁医院 控制供气装置的脚控气体流速装置和喷气剥离系统
CN110664479A (zh) * 2019-09-30 2020-01-10 严立 控制气体供给装置的气体流速调节装置及喷气剥离系统
CN116965930B (zh) * 2023-09-22 2023-12-22 北京智愈医疗科技有限公司 一种基于超声图像的手术器械位移监测装置
CN117958912B (zh) * 2024-04-01 2024-06-25 北京智愈医疗科技有限公司 一种自动水刀优化控制方法和装置

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US5318518A (en) * 1991-08-14 1994-06-07 Hp Medica Gesellschaft Mbh Fur Medizintechnische Systeme Irrigating catheter
US5527330A (en) * 1994-08-18 1996-06-18 United States Surgical Corporation Fluid cutting instrument
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