A laparoscopic bile duct puncture traction incision kit based on triangular suture needle

Abstract

A laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle comprises a laparoscopic cannula, a needle holder and a triangular needle are arranged inside the laparoscopic cannula, the triangular needle is clamped and fixed on the needle holder, and a metal wire is passed through the tail of the triangular needle, the triangular needle is hooked from the tail by the metal wire of the triangular needle, so that the triangular needle is stuck in the clamping forceps of the needle holder, forming a stable structural state of the triangular needle on the needle holder, reducing the shaking of the needle body and affecting the operation; the triangular needle is connected to an external power supply through the metal wire, and forms an electrocoagulation cutter after power is turned on, forming a laparoscopic bile duct puncture, traction and incision kit based on the triangular suture needle; the present invention is a bile duct puncture, traction and incision kit, which is a brand-new bile duct puncture, traction and incision kit integrating a needle holder, a triangular needle, electrocoagulation incision, etc.

Description

Technical Field

[0001] The present invention relates to an auxiliary medical device for surgery, and in particular to a puncture, traction and incision combined device for laparoscopic biliary surgery. The puncture, traction and incision combined device for laparoscopic biliary surgery can not only perform laparoscopic puncture confirmation of the bile duct, but also simultaneously perform traction of the bile duct and incision of the puncture and traction part of the bile duct, and can be extended to the puncture, traction and incision of other ducts, such as the stomach, intestinal tract, ureter, blood vessel, pancreatic duct, etc.; and belongs to the technical field of surgical medical devices. Background Art

[0002] Cholelithiasis is the most common hepatobiliary surgical disease, with an incidence rate of about 10% in the population. Among them, 10-20% of patients have common bile duct stones and often require surgical treatment. At present, the preferred surgical procedure for solving gallbladder stones combined with common bile duct stones is laparoscopic cholecystectomy plus common bile duct exploration; among them, during the operation, the puncture device is an indispensable tool, and determining the common bile duct, traction of the common bile duct and incision become the key to this procedure. At present, the clinical common bile duct puncture exploration, traction of the common bile duct and incision are a series of scattered steps. It is necessary to determine the bile duct with a puncture needle, cut the common bile duct with an electric hook or scissors, and replace multiple instruments, which increases the cost of instruments and time. At the same time, the traction part of the common bile duct is missing, and the risk of puncture, incision and thermal injury is relatively high, which is easy to cause damage to the posterior wall of the common bile duct, portal vein puncture and bleeding, bile duct scar stenosis caused by thermal injury to the bile duct, bile leakage, bleeding, recurrent cholangitis, etc. after surgery, which increases the pain and physical and economic burden of patients. Therefore, it is necessary to invent a kit that can simply, quickly and safely complete the above series of steps.

[0003] Through patent search, no patent literature reports on the same technology as the present invention were found. The patents that are related to the present invention are mainly the following:

[0004] 1. The Chinese utility model patent with application number CN201420787501.4 and title “A laparoscopic bile duct puncture and aspiration needle”, the applicant is Shanghai Tongji Hospital, which discloses a laparoscopic bile duct puncture and aspiration needle, including a puncture needle, a puncture head is provided at the front end of the puncture needle, a plastic needle tail is connected to the rear end, a channel is provided in the puncture needle, and a channel is also provided in the plastic needle tail. A protective tube is provided on the outer side of the puncture needle, the length of the protective tube is greater than the length of the puncture needle, and an elastic balloon is connected to the rear end of the plastic needle tail, and the inner cavity of the elastic balloon is connected to the channel in the plastic needle tail. During laparoscopic bile duct surgery, the protective tube is inserted into the abdominal cavity together with the puncture needle and the elastic balloon through the Trocar hole, the protective tube is removed in the abdominal cavity, the elastic balloon is squeezed in advance, and the bile duct is punctured using the puncture needle; after puncture, the elastic balloon is released, the elastic balloon sucks bile, and the puncture needle is reinserted into the protective tube and withdrawn from the abdominal cavity.

[0005] 2. The application number is CN201910099131.2, and the name is "A laparoscopic fine bile duct incision device". The applicant is the Chinese invention patent of the First Affiliated Hospital of Zhengzhou University. The patent discloses a laparoscopic fine bile duct incision device, including an inner core tube, a puncture needle is fixed at the front end of the inner core tube, the puncture needle consists of a horizontal part and an inclined part, and the angle between the horizontal part and the inclined part is 120°-150°. A three-way valve is installed at the rear end of the inner core tube, and a handle is fixed to the rear end of the inner core tube. An electric cutting assembly is provided on the inner core tube, and the electric cutting assembly includes a push-pull rod, an electric cutting wire and a movable buckle. An inner hole is opened on the lower inner wall of the inner core tube along the axial direction. The push-pull rod is slidably penetrated in the inner hole of the inner core tube, and the front end of the push-pull rod passes through the inner core tube forward. An installation box is fixed to the front end of the push-pull rod, and a pin shaft is provided in the installation box. A coil spring connected to the pin shaft is installed in the installation box. One end of the electric cutting wire is connected to the inclined end of the puncture needle, and the other end of the electric cutting wire passes through the installation box and is wound and connected to the pin shaft. Under the action of the coil spring, the electric cutting wire is in a taut state and is parallel to the inclined part of the puncture needle.

[0006] 3. The Chinese utility model patent with application number CN201720910885.8 and title “Laparoscopic choledochoscope operation auxiliary device”, the applicant is Liuzhou People’s Hospital, which discloses a laparoscopic choledochoscope operation auxiliary device, including: a puncture sleeve and a puncture needle core; the puncture sleeve includes: a rubber plug, a plastic pipe, and a silicone pipe, the rubber plug is fixed at one end of the plastic pipe, the other end of the plastic pipe is connected to the silicone pipe, and a rubber plug hole is provided in the middle of the rubber plug, the aperture of the rubber plug hole matches the diameter of the choledochoscope; the puncture needle core can enter the puncture sleeve through the rubber plug hole. The patent proposes an auxiliary device that can establish a support channel between the abdominal wall and the bile duct under laparoscopy to avoid the shaking of the choledochoscope in the abdominal cavity, and can adjust the position during the operation to cooperate with the operation of the choledochoscope, which greatly increases the convenience and success rate of laparoscopic choledochoscope operation and shortens the operation time. At the same time, because the front end part of the device in the abdominal cavity is basically a silicone tube, friction damage to the choledochoscope skin and clamping damage caused by fixing the intra-abdominal choledochoscope are avoided.

[0007] Through careful analysis of the above patents, although these patents all involve some puncture or electrocuting devices for medical laparoscopic choledochoscope operation, and also propose some improved technical solutions, but through careful analysis, these patent holders only consider puncture, suture traction of the common bile duct, and electric hook or scissors to cut the common bile duct separately, and do not carry out organic combination and overall consideration of each step. Therefore, the problems raised above still exist, and still need further research and improvement. Summary of the invention

[0008] The purpose of the present invention is to propose a new laparoscopic bile duct puncture, traction and incision component to address the deficiencies of the various components of the existing laparoscopic bile duct puncture, traction and incision; the new laparoscopic bile duct puncture, traction and incision component can directly complete all puncture, identification, traction and electrocute of the common bile duct through one kit.

[0009] In order to achieve this object, the present invention provides a laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle, comprising a laparoscopic cannula, a needle holder and a triangular needle are arranged inside the laparoscopic cannula, and the triangular needle is clamped and fixed on the needle holder, and a metal wire is passed through the tail of the triangular needle, and the metal wire is used to hook the triangular needle from the tail of the triangular needle so that the triangular needle is stuck in the clamping forceps of the needle holder, forming a stable structural state of the triangular needle on the needle holder, reducing the shaking of the needle body and affecting the operation; the triangular needle is connected to an external power supply through the metal wire, and forms an electric coagulation cutter after power-on, forming a laparoscopic bile duct puncture, traction and incision kit based on the triangular suture needle.

[0010] Furthermore, the triangular needle fixed on the needle holder adopts a triangular needle with a flat strip at the tail, and a clamp is provided at the front end of the needle holder. The flat strip at the tail of the triangular needle is clamped by the clamp of the needle holder to form a stable triangular needle clamping structure, and the triangular needle is vertically punctured into the bile duct through the needle holder, and it is ensured that the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct after puncture.

[0011] Furthermore, the triangular needle head of the triangular needle is a triangular cone puncture needle, and puncture is performed using the puncture needle part. The overflow of yellow-brown liquid from the triangular cone needle head can determine that the puncture has entered the common bile duct correctly, thereby reducing accidental injury to the blood vessel; the middle needle body is a straight needle body, and after the puncture is successful, the straight needle body is used to lift the front wall of the bile duct upwards to keep a certain tension, thereby facilitating the subsequent electrocoagulation incision and reducing electrocoagulation thermal damage.

[0012] Furthermore, the method of using a metal wire to hook the triangular needle from the tail is that a needle and thread hole is opened on the flat strip at the tail of the triangular needle, and a metal wire is passed through the needle and thread hole. The metal wire passes through the needle and thread hole on the flat strip at the tail of the triangular needle and is tightened on the rear end of the needle holder to reduce the shaking of the needle body and affect the operation, so that the tail of the triangular needle can be more firmly fixed in the clamping forceps of the needle holder. At the same time, the triangular needle is connected to the electrocoagulation incision power supply device through the metal wire. After the puncture is successful, the straight needle body part of the triangular needle is used to lift the front wall of the bile duct upward to keep a certain tension on the front wall of the bile duct. Then, by connecting the metal wire power supply, the electrocoagulation triangular needle is used to perform electrocoagulation incision on the front wall of the bile duct.

[0013] Furthermore, the method of electrocoagulating and cutting the anterior wall of the bile duct by means of an electrocoagulation triangular needle is characterized in that a cutting portion of the triangular needle is provided at the rear of the triangular needle, and the cutting portion of the triangular needle becomes an electrocoagulation cutting device after the triangular needle is energized, and the anterior wall of the bile duct is cut by means of the cutting portion of the triangular needle.

[0014] Furthermore, the clamping forceps of the needle holder are clamping forceps with a slot, the shape of the slot matches the shape of the tail of the triangular needle; the tail of the triangular needle will be inserted into the slot of the needle holder, so that the triangular needle forms a stable structure on the needle holder.

[0015] Furthermore, the needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula, and a needle holder pusher is provided on the laparoscope cannula; when in use, the needle holder with the triangular needle is loaded into the laparoscope cannula, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, and the triangular needle is vertically punctured into the bile duct and then moves in a straight line parallel to the longitudinal axis of the bile duct.

[0016] Furthermore, the needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula by first passing the metal wire through the needle and thread hole on the flat strip at the tail of the triangular needle, the metal wire is covered with an insulating material and fixed on the needle and thread hole, and then the flat strip at the tail of the triangular needle is inserted into the flat groove of the needle holder, and the metal wire is passed through the center hole of the needle holder to pass through the end of the needle holder; then the needle holder and the triangular needle are placed into the laparoscope cannula together, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, so that the tube opening of the triangular needle in the laparoscope cannula protrudes outside the laparoscope cannula, and after the triangular needle is vertically punctured into the bile duct, the needle moves in a straight line parallel to the longitudinal axis of the bile duct.

[0017] Furthermore, the triangular needle vertically punctures the bile duct and then moves in a straight line parallel to the longitudinal axis of the bile duct. The abdomen is a straight section, and the needle head and needle tail are curved triangular needles, so that the height of the entire triangular needle is reduced so that the triangular needle can be placed in the laparoscope cannula, and the pusher in the laparoscope cannula pushes the needle holder to move in the laparoscope cannula, so that when the needle tip of the triangular needle is exposed from the laparoscope cannula, the needle tip of the triangular needle is perpendicular to the bile duct, and the triangular needle will vertically puncture the bile duct, and after the triangular needle penetrates the bile duct, the straight section of the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct, and the triangular needle tip in the lower section of the common bile duct 0.8-1.2cm away from the puncture point penetrates the bile duct wall. The triangular needle tip is a triangular pyramid, which is easy to leak the fluid in the bile duct. Seeing yellow-green bile flowing out can determine that the bile duct has been entered correctly.

[0018] Furthermore, one end of the metal wire is connected to the tail of the triangular needle, and the other end is connected to a power source. The entire metal wire is insulated and isolated in the needle holder and the laparoscope cannula. After the straight section of the triangular needle is parallel to the longitudinal axis of the bile duct, the metal wire is connected to the power source, and the entire metal wire is insulated and isolated in the needle holder and the laparoscope cannula, and the triangular needle is used for electrocoagulation to cut the anterior wall of the bile duct.

[0019] The advantages of the present invention are:

[0020] The present invention is a bile duct puncture, traction and incision kit, which integrates a needle holder, a triangular needle, an electric current circuit and the like. The present invention can realize a series of processes such as bile duct puncture, identification, traction and incision at one time, and helps to increase the success rate of laparoscopic bile duct exploration, reduce the operation time, increase the success rate of surgical stone removal, reduce the occurrence of postoperative bleeding, common bile duct stenosis and bile leakage, and has significant clinical application effects, and mainly has the following advantages:

[0021] 1. The kit of the present invention only needs to insert the puncture card once to complete a series of steps such as common bile duct puncture confirmation, traction, and electrocoagulation incision without changing instruments, which is convenient and fast and saves operation time;

[0022] 2. The kit of the present invention has the function of pushing the triangular needle into an angle and properly fixing the triangular needle on the needle holder, thereby reducing the shaking of the needle body and affecting the operation; at the same time, the well-fixed triangular needle can puncture the common bile duct more efficiently and form a straight line;

[0023] 3. After the puncture needle of the kit of the present invention vertically punctures the bile duct, it moves parallel to the longitudinal axis of the bile duct, thereby avoiding damage to the posterior wall of the bile duct; at the same time, after the puncture is completed, the distance between the two puncture needle holes left by the triangular needle on the bile duct is just the distance required for the bile duct exploration surgery;

[0024] 4. After the puncture is successful, the properly fixed triangular needle can lift up the anterior wall of the bile duct to keep it in a certain tension. Then the triangular needle connected to the electrocoagulation can play the role of electrocoagulation to cut the anterior wall of the bile duct, avoiding the anterior wall blood vessels, reducing the thermal damage caused by electrocoagulation, and reducing the occurrence of postoperative bile duct stenosis and cholangitis. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure;

[0028] Figure 4 Schematic diagram of the internal quadratic curve structure.

[0029] In the figure: 1. Laparoscopic cannula, 2. Needle holder, 3. Triangular needle, 4. Metal wire, 5. Clamping forceps, 6. Reinforcement ribs, 7. External power supply, 8. Puncture needle, 9. Straight needle body, 10. Flat tail strip, 11. Needle and thread hole, 12. Rear end, 13. Incision part, 14. Slot, 15. Needle holder pusher. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] By attaching Figure 1 It can be seen that the present invention relates to a laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle, comprising a laparoscopic cannula 1, in which a needle holder 2 and a triangular needle 3 are arranged, and the triangular needle 3 is clamped and fixed on the needle holder 2, and a metal wire 4 is passed through the tail 5 of the triangular needle, and the metal wire 4 is used to hook the triangular needle 3 from the tail 5 of the triangular needle, so that the triangular needle is stuck in the clamping forceps 6 of the needle holder, forming a stable structural state of the triangular needle 3 on the needle holder 2, reducing the shaking of the needle body and affecting the operation; the triangular needle 3 is connected to the external power supply 7 through the metal wire 4, and forms an electric coagulation cutter after power-on, forming a laparoscopic bile duct puncture, traction and incision kit based on the triangular suture needle.

[0033] The triangular needle 3 is clamped and fixed on the needle holder 2. The tail of the triangular needle 3 is a flat strip. At the same time, a clamping forceps 6 is provided at the front end of the needle holder 2. The flat strip part of the tail 5 of the triangular needle is clamped by the clamping forceps 6 of the needle holder 2 to form a stable clamping structure of the triangular needle 3. The needle holder 2 allows the triangular needle 3 to be vertically punctured into the bile duct, and ensures that the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct after puncture.

[0034] The triangular needle 3 includes three parts: a head, a middle body and a tail, wherein the head is a puncture needle 8, which is in the shape of a needle tip, and is used for puncture. The middle needle body is a straight needle body 9. After the puncture is successful, the straight needle body 9 is used to lift the front wall of the bile duct upward to keep a certain tension, which is convenient for the subsequent electrocoagulation incision.

[0035] The method of using the metal wire 4 to hook the triangular needle from the tail is that a needle and thread hole 11 is opened on the flat strip 10 at the tail of the triangular needle 3, and the metal wire 4 is passed through the needle and thread hole 11. The metal wire 4 passes through the needle and thread hole 11 on the flat strip 10 at the tail of the triangular needle, and is tightened on the rear end 12 of the needle holder by the clamping forceps 6 at the front end of the needle holder 2, so as to reduce the shaking of the needle body and affect the operation, so that the tail 5 of the triangular needle can be more firmly fixed in the clamping forceps 6 of the needle holder 2, and at the same time, the triangular needle 3 is connected to the power supply device 7 for electrocoagulation incision through the metal wire 4, but the triangular needle 3 and the metal wire 4 are insulated from the needle holder 2 and the laparoscope sleeve 1; after the puncture is successful, the straight needle body 9 of the triangular needle 3 is used to lift the anterior wall of the bile duct upward to keep a certain tension on the anterior wall of the bile duct, and then the metal wire power supply is turned on, and the electrocoagulation triangular needle 3 is used to electrocoagulate and incise the anterior wall of the bile duct.

[0036] The method of electrocoagulating and cutting the anterior wall of the bile duct by electrocoagulating a triangular needle is that a cutting portion 13 of the triangular needle is provided on the inner side surface of the rear part of the triangular needle 3. The cutting portion 13 of the triangular needle becomes an electrocoagulation cutting device after the triangular needle 3 is energized, and the anterior wall of the bile duct is cut by electrocoagulating the cutting portion 13 of the triangular needle.

[0037] The clamping forceps 6 of the needle holder 2 are clamping forceps 6 with a slot 14, and the shape of the slot 14 matches the shape of the flat strip 10 at the tail of the triangular needle; the flat strip 10 at the tail of the triangular needle will be inserted into the slot 14 of the needle holder, so that the triangular needle 3 forms a stable structure on the needle holder 2.

[0038] The needle holder 2 is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula 1, and a needle holder pusher 15 is provided on the laparoscope cannula. When in use, the needle holder 2 with the triangular needle 3 is inserted into the laparoscope cannula 1, and the pusher 15 in the laparoscope cannula 1 pushes the needle holder 2 to move in the laparoscope cannula 1, so that the triangular needle 3 is vertically punctured into the bile duct and then moves in a straight line parallel to the longitudinal axis of the bile duct.

[0039] The needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula by first passing the metal wire 4 through the needle and thread hole 11 on the flat strip 10 at the tail of the triangular needle and fixing it on the needle and thread hole 11, then inserting the flat strip 10 at the tail of the triangular needle into the flat card slot 14 of the needle holder 2, and passing the metal wire 4 through the center hole 11 of the needle holder 2 and out of the end of the needle holder 2; then putting the needle holder 2 and the triangular needle 3 into the laparoscope cannula 1 together, and pushing the needle holder 2 to move in the laparoscope cannula 1 by the pusher 15 in the laparoscope cannula 1, so that the tube opening of the triangular needle 3 in the laparoscope cannula 1 protrudes out of the laparoscope cannula 1, and after the triangular needle 3 vertically punctures the bile duct, it moves in a straight line parallel to the longitudinal axis of the bile duct.

[0040] The triangular needle punctures the bile duct vertically and then moves in a straight line parallel to the longitudinal axis of the bile duct. The triangular needle has a straight section on the abdomen and a needle head and a needle tail that are curved, so that the height of the entire triangular needle is reduced so that the triangular needle can be placed in the laparoscope cannula, and the pusher in the laparoscope cannula pushes the needle holder to move in the laparoscope cannula, so that when the needle tip of the triangular needle is exposed from the laparoscope cannula, the needle tip of the triangular needle is perpendicular to the bile duct, and the triangular needle will puncture the bile duct vertically. After the triangular needle penetrates the bile duct, the straight section of the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct, and the triangular needle tip in the lower section of the common bile duct 0.8-1.2 cm away from the puncture point penetrates the bile duct wall. The triangular needle tip is a triangular pyramid, which is easy to leak the fluid in the bile duct. Seeing yellow-green bile flowing out can determine that the bile duct has been entered correctly.

[0041] One end of the metal wire is connected to the tail of the triangular needle, and the other end is connected to a power source. The entire metal wire is in an insulated and isolated state in the needle holder and the laparoscope sleeve. After the straight section of the triangular needle is inserted into the abdomen parallel to the straight longitudinal axis of the bile duct, the metal wire is connected to the power source, and the triangular needle is used for electrocoagulation to cut the anterior wall of the bile duct.

[0042] The specific operation method of the present invention is to first pass the metal wire through the wire hole on the laparoscope sleeve, and lead out the metal wire from the front of the laparoscope sleeve; then pass the metal wire into the rear end of the needle holder, pass through the needle holder tube body, pass the metal wire through the front of the needle holder and lead out the metal wire; then pass the metal wire through the needle hole at the tail of the triangular needle and fix it at the tail of the triangular needle; then insert the needle holder into the laparoscope sleeve from the front of the laparoscope sleeve so that it supports the needle pusher in the laparoscope sleeve; tighten the needle holder through the laparoscope sleeve operation so that the needle holder clamps the triangular needle, and then enter the abdominal cavity to perform a series of processes such as bile duct puncture, confirmation, traction, and incision.

[0043] Embodiment 2

[0044] The principle of Example 2 is the same as that of Example 1, except that the structure is slightly different. The triangular needle-based laparoscopic intestinal puncture, traction and incision kit comprises a laparoscopic cannula, in which a needle holder and a triangular needle are arranged, and the triangular needle is fixed on the needle holder, and a metal wire is passed through the tail of the triangular needle. The metal wire is used to hook the triangular needle from the tail so that the triangular needle is stuck in the clamping forceps of the needle holder, forming a stable structural state of the triangular needle on the needle holder, reducing the shaking of the needle body and affecting the operation; the triangular needle is connected to an external power supply through the metal wire, and forms an electric coagulation cutter after power-on, forming a laparoscopic bile duct puncture, traction and incision kit based on the triangular needle.

[0045] The triangular needle fixed on the needle holder adopts a triangular needle with a flat strip at the tail. At the same time, a clamping forceps is arranged at the front end of the needle holder. The flat strip part at the tail of the triangular needle is clamped by the clamping forceps of the needle holder to form a stable triangular needle stable clamping structure. The triangular needle is vertically punctured into the bile duct through the needle holder, and it is ensured that the triangular needle is parallel to the straight longitudinal axis of the bile duct after puncture.

[0046] The triangular needle head of the triangular needle is a puncture needle, which is used for puncture. The middle needle body is a linear needle body. After the puncture is successful, the linear needle body is used to lift the front wall of the bile duct upward to maintain a certain tension, which is convenient for the subsequent electrocoagulation incision.

[0047] The method of using a metal wire to hook the triangular needle from the tail is that a needle and thread hole is opened on the flat strip at the tail of the triangular needle, and a metal wire is passed through the needle and thread hole. The metal wire passes through the needle and thread hole on the flat strip at the tail of the triangular needle and is tightened on the rear end of the needle holder to reduce the shaking of the needle body and affect the operation, so that the tail of the triangular needle can be more firmly fixed in the clamping forceps of the needle holder. At the same time, the triangular needle is connected to the electrocoagulation incision power supply device through the metal wire. After the puncture is successful, the straight needle body part of the triangular needle is used to lift the front wall of the bile duct upward to keep a certain tension on the front wall of the bile duct. Then, by connecting the metal wire power supply, the electrocoagulation triangular needle is used to perform electrocoagulation incision on the front wall of the bile duct.

[0048] The method of electrocoagulating and cutting the anterior wall of the bile duct by electrocoagulation triangular needle is that a cutting part of the triangular needle is provided at the rear of the triangular needle, and the cutting part of the triangular needle becomes an electrocoagulation cutting device after the triangular needle is energized, and the anterior wall of the bile duct is cut by electrocoagulation through the cutting part of the triangular needle.

[0049] The clamping forceps of the needle holder are clamping forceps with a slot, the shape of which matches the shape of the tail of the triangular needle; the tail of the triangular needle will be inserted into the slot of the needle holder, so that the triangular needle forms a stable structure on the needle holder.

[0050] The needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula, and a needle holder pusher is provided on the laparoscope cannula. When in use, the needle holder with the triangular needle is loaded into the laparoscope cannula, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, and the triangular needle is vertically punctured into the bile duct and then moves in a straight line parallel to the longitudinal axis of the bile duct.

[0051] The needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula by firstly passing the metal wire through the needle and thread hole on the flat strip at the tail of the triangular needle and fixing it on the needle and thread hole, then inserting the flat strip at the tail of the triangular needle into the flat groove of the needle holder, and passing the metal wire through the center hole of the needle holder and out of the end of the needle holder; then the needle holder and the triangular needle are put into the laparoscope cannula together, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, so that the tube opening of the triangular needle in the laparoscope cannula protrudes outside the laparoscope cannula, and after the triangular needle is vertically punctured into the bile duct, the needle moves in a straight line parallel to the longitudinal axis of the bile duct.

[0052] The triangular needle punctures the bile duct vertically and then moves in a straight line parallel to the longitudinal axis of the bile duct. The needle body is a straight section, and the needle head and needle tail are curved triangular needles, so that the height of the entire triangular needle is reduced so that the triangular needle can be placed in the laparoscope cannula, and the pusher in the laparoscope cannula pushes the needle holder to move in the laparoscope cannula, so that when the needle tip of the triangular needle is exposed from the laparoscope cannula, the needle tip of the triangular needle is perpendicular to the bile duct, and the triangular needle will puncture the bile duct vertically. After the triangular needle punctures the bile duct vertically, the straight section of the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct.

[0053] One end of the metal wire is connected to the tail of the triangular needle, and the other end is connected to the power supply. After the straight section of the triangular needle is parallel to the longitudinal axis of the bile duct, the metal wire and the power supply are connected to electrocoagulate the triangular needle to cut the anterior wall of the bile duct.

[0054] The above-listed embodiments are only used to clearly and completely describe the technical solutions of the present invention in combination with the accompanying drawings; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, and the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the present invention without substantial change in the technical content. At the same time, the structure, proportion, size, etc. illustrated in the drawings of the specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that can be achieved by the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0055] The advantages of the present invention are:

[0056] The present invention is a bile duct puncture, traction and incision kit, which integrates a needle holder, a triangular needle, an electric current circuit and the like. The present invention can realize a series of processes such as bile duct puncture, traction and incision at one time, help increase the success rate of laparoscopic bile duct exploration, reduce the operation time, increase the success rate of surgical stone removal, reduce the occurrence of postoperative bleeding, common bile duct stenosis and bile leakage, and has significant clinical application effects, and mainly has the following advantages:

[0057] 1. The kit of the present invention only needs to insert the puncture card once to complete a series of steps such as common bile duct puncture confirmation, traction, and electrocoagulation incision without changing instruments, which is convenient and fast and saves operation time;

[0058] 2. The kit of the present invention has the function of pushing the triangular needle into an angle and properly fixing the triangular needle on the needle holder, thereby reducing the shaking of the needle body and affecting the operation; at the same time, the well-fixed triangular needle can puncture the common bile duct more efficiently and form a straight line;

[0059] 3. After the puncture needle of the kit of the present invention vertically punctures the bile duct, it moves parallel to the longitudinal axis of the bile duct, thereby avoiding damage to the posterior wall and blood vessels of the bile duct; at the same time, after the puncture is completed, the distance between the two puncture needle holes left by the triangular needle on the bile duct is just the distance required for the bile duct exploration surgery;

[0060] 4. After the puncture is successful, the properly fixed triangular needle can lift up the anterior wall of the bile duct to keep it in a certain tension. Then the triangular needle connected to the electrocoagulation can play the role of the triangular needle cutter in electrocoagulating and cutting the anterior wall of the bile duct, avoiding the anterior wall blood vessels, reducing the thermal damage caused by electrocoagulation, and reducing the occurrence of postoperative bile duct stenosis.

Claims

1. A laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle, comprising a laparoscopic cannula, characterized in that: A needle holder and a triangular needle are arranged in the laparoscope sleeve, and the triangular needle is clamped and fixed on the needle holder, and a metal wire is passed through the tail of the triangular needle, and the metal wire is used to hook the triangular needle from the tail of the triangular needle, so that the triangular needle is stuck in the clamping clamp of the needle holder, forming a triangular needle in a stable structural state on the needle holder, reducing the shaking of the needle body and affecting the operation; the triangular needle is connected to an external power supply through the metal wire, and forms an electric coagulation cutter after power is turned on, forming a laparoscopic bile duct puncture traction and incision kit based on a triangular suture needle; wherein, the triangular needle fixed on the needle holder adopts a triangular needle with a flat strip at the tail, and a clamp is arranged at the front end of the needle holder, and the flat strip part of the tail of the triangular needle is clamped by the clamp of the needle holder to form a stable triangular needle stable clamping structure, and the triangular needle is vertically punctured into the bile duct through the needle holder, and it is ensured that the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct after puncture; the triangular needle The triangular needle head is a puncture needle, and the puncture needle part is used for puncture. The middle needle body is a straight needle body. After the puncture is successful, the straight needle body is used to lift the front wall of the bile duct upward to keep it at a certain tension, which is convenient for the subsequent electrocoagulation incision; the use of metal wire to hook the triangular needle from the tail is that a needle and thread hole is opened on the flat strip at the tail of the triangular needle, and a metal wire is passed through the needle and thread hole. The metal wire passes through the needle and thread hole on the flat strip at the tail of the triangular needle and is tightened on the rear end of the needle holder to reduce the shaking of the needle body and affect the operation, so that the tail of the triangular needle can be more firmly fixed in the clamping forceps of the needle holder. At the same time, the triangular needle is connected to the electrocoagulation incision power supply device through the metal wire. After the puncture is successful, the straight needle body part of the triangular needle is used to lift the front wall of the bile duct upward to keep the front wall of the bile duct at a certain tension, and then the metal wire power supply is turned on to perform electrocoagulation incision of the front wall of the bile duct through the electrocoagulation triangular needle.

2. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 1, characterized in that: The method of electrocoagulating and cutting the anterior wall of the bile duct by electrocoagulation triangular needle is that a cutting part of the triangular needle is provided at the rear of the triangular needle, and the cutting part of the triangular needle becomes an electrocoagulation cutting device after the triangular needle is energized, and the anterior wall of the bile duct is cut by electrocoagulation through the cutting part of the triangular needle.

3. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 1, characterized in that: The clamping forceps of the needle holder are clamping forceps with a slot, the shape of which matches the shape of the tail of the triangular needle; the tail of the triangular needle will be inserted into the slot of the needle holder, so that the triangular needle forms a stable structure on the needle holder.

4. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 1, characterized in that: The needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula, and a needle holder pusher is provided on the laparoscope cannula. When in use, the needle holder with the triangular needle is loaded into the laparoscope cannula, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, and the triangular needle is vertically punctured into the bile duct and then moves in a straight line parallel to the longitudinal axis of the bile duct.

5. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 4, characterized in that: The needle holder is inserted into the laparoscope cannula from the port at the rear of the laparoscope cannula by firstly passing the metal wire through the needle and thread hole on the flat strip at the tail of the triangular needle and fixing it on the needle and thread hole, then inserting the flat strip at the tail of the triangular needle into the flat groove of the needle holder, and passing the metal wire through the central channel of the needle holder and out of the tail end of the needle holder; then the needle holder and the triangular needle are put into the laparoscope cannula together, and the needle holder is pushed to move in the laparoscope cannula by the pusher in the laparoscope cannula, so that the tube opening of the triangular needle in the laparoscope cannula protrudes out of the laparoscope cannula, and after the triangular needle is vertically punctured into the bile duct, the needle moves in a straight line parallel to the longitudinal axis of the bile duct.

6. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 5, characterized in that: The triangular needle punctures the bile duct vertically and then moves in a straight line parallel to the longitudinal axis of the bile duct. The triangular needle has a straight section on the abdomen and a needle head and a needle tail that are curved, so that the height of the entire triangular needle is reduced so that the triangular needle can be placed in the laparoscope cannula, and the pusher in the laparoscope cannula pushes the needle holder to move in the laparoscope cannula, so that when the needle tip of the triangular needle is exposed from the laparoscope cannula, the needle tip of the triangular needle is perpendicular to the bile duct, and the triangular needle will puncture the bile duct vertically. After the triangular needle penetrates the bile duct, the straight section of the triangular needle moves in a straight line parallel to the longitudinal axis of the bile duct, and the triangular needle tip in the lower section of the common bile duct 0.8-1.2 cm away from the puncture point penetrates the bile duct wall. The triangular needle tip is a triangular pyramid, which is easy to leak the fluid in the bile duct. Seeing yellow-green bile flowing out can determine that the bile duct has been entered correctly.

7. The laparoscopic bile duct puncture, traction and incision kit based on a triangular suture needle according to claim 1, characterized in that: One end of the metal wire is connected to the tail of the triangular needle, and the other end is connected to a power source. The entire metal wire is insulated and isolated in the needle holder and the laparoscope cannula. The straight section of the triangular needle is parallel to the longitudinal axis of the bile duct and the bile duct wall is lifted to maintain a certain tension. Then, the power source connected to the metal wire is turned on, and the triangular needle is electrocoagulated to cut the traction section of the anterior wall of the bile duct, which can reduce thermal damage to the bile duct.

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