A laparoscopic pancreaticojejunostomy stapler

Abstract

The present invention provides a laparoscopic pancreaticojejunostomy stapler. The laparoscopic pancreaticojejunostomy stapler includes a pancreaticojejunostomy stapler, and the pancreaticojejunostomy stapler includes a slender rod, an anastomosis cap, a through hole, and a pancreatic juice hole. The anastomosis cap is fixed on the slender rod. The slender rod is a hollow structure with the through hole, and one end of the slender rod has a pancreatic juice hole. The laparoscopic pancreaticojejunostomy stapler further includes a release device. The pancreaticojejunostomy stapler is disposed inside the release device. The release device includes a sleeve. The pancreaticojejunostomy stapler is disposed inside the sleeve, and the pancreaticojejunostomy stapler and the sleeve are coaxial. The laparoscopic pancreaticojejunostomy stapler proposed by the present invention can change the conventional method of suturing the pancreas and the gastrointestinal tract with sutures. The pancreaticojejunostomy stapler has the functions of reconstructing the passage for pancreatic juice to enter the digestive tract, preventing pancreatic juice leakage, and facilitating the connection of the anastomosis of the stomach and intestines and the pancreatic juice stump. Sutures are not required, and the anastomosis is convenient and firm.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, further relates to surgical instruments, and particularly relates to a laparoscopic pancreatic-jejunal anastomosis device. Background Art

[0002] Since the early 20th century, surgery has been exploring resection and anastomosis techniques after pancreatic and duodenal lesions. To date, there is still no convenient, fast, and safe anastomosis device in pancreatic surgery. Conventional methods require using sutures to wrap the pancreatic stump and jejunum or stomach so that pancreatic juice can enter the digestive tract.

[0003] The anastomosis method of embedding the pancreatic stump with sutures requires good suture techniques, with high surgical difficulty and intensity. Dense suturing can cause poor blood supply to the stump, affecting healing, pancreatic duct blockage, pancreatic juice leakage and corrosion, resulting in poor anastomosis effect and unsatisfactory patient survival rate.

[0004] Currently, there is no commercial pancreatic-jejunal anastomosis device and its release device in the prior art. Physicians in related fields can only make simple auxiliary anastomosis parts by experience and mainly use sutures for suturing. The suturing difficulty is high, time-consuming and laborious, and the incidence of postoperative pancreatic leakage is high.

[0005] Therefore, there is an urgent need for a safe and convenient pancreatic-jejunal anastomosis device in the surgical field. Summary of the Invention

[0006] The present invention provides a laparoscopic pancreatic-jejunal anastomosis device to at least solve the technical problems in the prior art that the anastomosis method of embedding the pancreatic stump with sutures requires good suture techniques, with high surgical difficulty and intensity, and dense suturing can cause poor blood supply to the stump.

[0007] The present invention provides a laparoscopic pancreatic-jejunal anastomosis device. The laparoscopic pancreatic-jejunal anastomosis device includes a pancreatic-jejunal anastomosis device. The pancreatic-jejunal anastomosis device includes a slender rod, an anastomosis cap, a through hole, and a pancreatic juice hole. The anastomosis cap is fixed on the slender rod. The slender rod is a hollow structure with the through hole. One end of the slender rod has a pancreatic juice hole;

[0008] The laparoscopic pancreatic-jejunal anastomosis device further includes a release device. The pancreatic-jejunal anastomosis device is disposed inside the release device. The release device includes a sleeve. The pancreatic-jejunal anastomosis device is disposed inside the sleeve, and the pancreatic-jejunal anastomosis device is coaxial with the sleeve.

[0009] Optionally, the diameter of the slender rod is less than 5 mm, and / or the number of the pancreatic juice holes is greater than one, and / or at least one cap threading hole is provided on the anastomosis cap.

[0010] Optionally, the pancreatic-jejunal anastomosis device further includes an inverted cone structure. At least one inverted cone structure is provided on the slender rod, and the inverted cone structure and the pancreatic juice hole are on the same side of the anastomosis cap.

[0011] Optionally, the above anastomosis cap is circular or oval;

[0012] And / or one side of the above anastomosis cap is a concave structure, and the concave structure and the above pancreatic juice hole are on the same side of the anastomosis cap.

[0013] Optionally, the other end of the above slender rod has a rod threading hole;

[0014] And / or the other end of the above slender rod is a rod tail, and the rod tail has a wedge-shaped structure.

[0015] Optionally, the above anastomosis cap is elastic, and the edge of the anastomosis cap has at least two pointed valves;

[0016] The above sleeve has a sleeve groove, the pointed valve cooperates with the sleeve groove, and the pointed valve slides on the surface of the sleeve groove.

[0017] Optionally, the above pointed valves of the anastomosis cap turn inwards or outwards, the sleeve has a constricted sleeve end, and the diameter of the sleeve end is smaller than the diameter of the pointed valves.

[0018] Optionally, the above pointed valves are provided with pointed valve holes;

[0019] And / or the material of the above anastomosis cap is shape memory alloy.

[0020] Optionally, the above release device is equipped with a firing trigger, a handle, a retraction button and a firing rod. The firing trigger and the retraction button are connected to the firing rod. The firing rod has a firing rod end. The rod tail is placed in the firing rod end, and the rod tail is connected to the firing rod end in a cooperative manner.

[0021] The above endoscopic pancreatic-jejunal anastomosis device is a manual endoscopic pancreatic-jejunal anastomosis device or an electric endoscopic pancreatic-jejunal anastomosis device.

[0022] In view of the above deficiencies in the prior art, the present invention provides an endoscopic pancreatic-jejunal anastomosis device. In view of the need for the pancreatic-jejunal anastomosis device to be inconvenient to be placed into the body, the present invention designs a release device that can quickly place the pancreatic-jejunal anastomosis device into the body through the endoscopic channel.

[0023] The technical problem to be solved by the technical solution of the present invention is to invent a release device for the pancreatic-jejunal anastomosis device that can be safely and conveniently placed at the surgical site. The device can pass through the endoscopic access. The device operates the firing rod inside the device manually or electrically to move it back and forth, pushing the pancreatic-jejunal anastomosis device placed therein along the sleeve into the surgical site, and then the device can be withdrawn. Depending on the material of the device, the device can be made of a polymer material for single use or made of a metal material for repeated use.

[0024] The present invention provides a novel pancreaticojejunostomy / gastrostomy method and instrument, which can change the traditional method of suturing the pancreas and gastrointestinal tract with sutures. The pancreaticojejunostomy stapler has the functions of reconstructing the passage for pancreatic juice to enter the digestive tract, preventing pancreatic juice leakage, and facilitating the connection and anastomosis of the gastrointestinal tract and the pancreatic juice stump. It does not require sutures and the anastomosis is convenient and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understood. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, wherein:

[0026] Figure 1 A schematic diagram showing an optional suture of the pancreatic stump and jejunum or stomach provided by the prior art;

[0027] Figure 2 A schematic diagram of an optional pancreaticojejunostomy stapler with a disc-shaped anastomosis cap provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of an optional pancreaticojejunostomy stapler with a disc-shaped anastomosis cap showing the concave structure of the anastomosis cap provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the anastomosis state of an optional pancreaticojejunostomy stapler with a petal-shaped anastomosis cap provided by an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the initial state of an optional pancreaticojejunostomy stapler with a petal-shaped anastomosis cap provided by an embodiment of the present invention;

[0031] Figure 6-1 A schematic diagram of an optional petal-shaped anastomosis cap provided by an embodiment of the present invention;

[0032] Figure 6-2 An optional petal-shaped anastomosis cap provided by an embodiment of the present invention Figure 6-1 The reverse side schematic diagram;

[0033] Figure 6-3 A schematic diagram of an optional petal-shaped anastomosis cap with pointed valve holes provided by an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the working steps of an optional pancreaticojejunostomy stapler with a petal-shaped anastomosis cap used alone provided by an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the working steps of an optional pancreaticojejunostomy stapler with a disc-shaped anastomosis cap used alone provided by an embodiment of the present invention;

[0036] Figure 9 Schematic assembly diagram of an optional endoscope as a release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0037] Figure 10 Schematic diagram of an optional release device of a pancreaticojejunostomy stapler (front section cut open) provided by an embodiment of the present invention;

[0038] Figure 11 Schematic diagram of an optional release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0039] Figure 12 Exploded schematic diagram of main parts of an optional release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0040] Figure 13 Schematic diagram of the cooperation structure between the firing rod of an optional release device of a pancreaticojejunostomy stapler and the pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0041] Figure 14 Schematic diagram of the cooperation structure between the cannula of an optional release device of a pancreaticojejunostomy stapler and the pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0042] Figure 15 Schematic diagram before the firing rod exits the cannula of an optional release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0043] Figure 16 Schematic diagram after the firing rod exits the cannula of an optional release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0044] Figure 17 Schematic diagram of an optional electric release device of a pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0045] Figure 18 Schematic diagram of an optional process of using a laparoscopic pancreaticojejunostomy stapler to insert the pancreaticojejunostomy stapler into the pancreas and jejunum for work provided by an embodiment of the present invention;

[0046] Figure 19 Schematic diagram of an optional laparoscopic pancreaticojejunostomy stapler with a disc-shaped anastomosis cap provided by an embodiment of the present invention;

[0047] Figure 20 Schematic diagram of an optional process of installing a pancreaticojejunostomy stapler with a disc-shaped anastomosis cap into a laparoscopic releaser to form a laparoscopic pancreaticojejunostomy stapler provided by an embodiment of the present invention;

[0048] Figure 21 Schematic diagram of an optional process of using a laparoscopic pancreaticojejunostomy stapler with a disc-shaped anastomosis cap to anastomose and suture the pancreas and jejunum provided by an embodiment of the present invention.

[0049] Reference signs:

[0050] Slender rod 11, anastomosis cap 12, cusp 121, valve hole 122, through hole 13, inverted cone structure 14, pancreatic juice hole 15, rod threading hole 16, cap threading hole 17, rod tail 18, concave structure 19;

[0051] Pancreaticojejunostomy stapler 1, release device 2, cannula 21, cannula end 211, cannula groove 212, firing trigger 22, handle 23, retraction button 24, firing rod 25, firing rod end 251. Detailed implementation manners

[0052] The principles and spirit of the present invention will be described below with reference to several exemplary implementation manners. It should be understood that these implementation manners are provided only to enable those skilled in the art to better understand and then implement the present invention, rather than limiting the scope of the present invention in any way. On the contrary, these implementation manners are provided to make the disclosure of this application more thorough and complete, and to be able to convey the scope of the disclosure of this application completely to those skilled in the art.

[0053] As shown in this embodiment Figures 1 to 21 as follows.

[0054] An embodiment of the present invention provides a laparoscopic pancreaticojejunostomy stapler. The laparoscopic pancreaticojejunostomy stapler includes a pancreaticojejunostomy stapler 1. The pancreaticojejunostomy stapler 1 includes a slender rod 11, an anastomosis cap 12, a through hole 13, and a pancreatic juice hole 15. The anastomosis cap 12 is fixed on the slender rod 11. The slender rod 11 is a hollow structure having the through hole 13. One end of the slender rod 11 has a pancreatic juice hole 15;

[0055] The laparoscopic pancreaticojejunostomy stapler further includes a release device 2. The pancreaticojejunostomy stapler 1 is disposed inside the release device 2. The release device 2 includes a cannula 21. The pancreaticojejunostomy stapler 1 is disposed inside the cannula 21. The pancreaticojejunostomy stapler 1 and the cannula 21 are coaxial.

[0056] Further, the diameter of the slender rod 11 is less than 5 mm, and / or the number of the pancreatic juice holes 15 is greater than one, and / or at least one cap threading hole 17 is provided on the anastomosis cap 12.

[0057] Further, the pancreaticojejunostomy stapler further includes an inverted cone structure 14. At least one inverted cone structure 14 is provided on the slender rod 11. The inverted cone structure 14 and the pancreatic juice hole 15 are on the same side of the anastomosis cap 12.

[0058] Further, the anastomosis cap 12 is circular or oval;

[0059] One side of the anastomosis cap 12 is a concave structure 19, and the concave structure 19 and the pancreatic juice hole 15 are on the same side of the anastomosis cap 12.

[0060] Furthermore, the other end of the slender rod 11 has a rod threading hole 16;

[0061] And / or the other end of the slender rod 11 is a rod tail 18, and the rod tail 18 has a wedge-shaped structure.

[0062] Furthermore, the anastomosis cap 12 is elastic, and at least two cusp tips 121 are provided at the edge of the anastomosis cap 12;

[0063] The cannula 21 has a cannula groove 212, the cusp tips 121 cooperate with the cannula groove 212, and the cusp tips 121 slide on the surface of the cannula groove 212.

[0064] Furthermore, the cusp tips 121 of the anastomosis cap 12 turn inwards or outwards, the cannula 21 has a contracted cannula end 211, and the diameter of the cannula end 211 is smaller than the diameter of the cusp tips 121.

[0065] Furthermore, cusp holes 122 are provided on the cusp tips 121;

[0066] And / or the material of the anastomosis cap 12 is a shape memory alloy.

[0067] Furthermore, a firing trigger 22, a handle 23, a retraction button 24 and a firing rod 25 are assembled in the release device 2. The firing trigger 22 and the retraction button 24 are connected to the firing rod 25. The firing rod 25 has a firing rod end 251. The rod tail 18 is placed in the firing rod end 251, and the rod tail 18 is cooperatively connected with the firing rod end 251.

[0068] The laparoscopic pancreatic-jejunal anastomosis device is a manual laparoscopic pancreatic-jejunal anastomosis device or an electric laparoscopic pancreatic-jejunal anastomosis device.

[0069] The specific working principle is as follows:

[0070] The pancreatic-jejunal anastomosis device has a slender rod part that can be inserted into the pancreatic duct. The barbs on the slender rod can prop up the pancreatic duct so that pancreatic juice does not leak, and the round holes on the slender rod can allow pancreatic juice to enter the hollow pipeline. The other end of the pancreatic-jejunal anastomosis device has a round or oval cap. When the slender rod enters the intestinal cavity or gastric cavity and pierces through the gastrointestinal cavity and inserts into the pancreatic duct, it can fix the intestinal or gastric wall to the pancreatic stump, pressing the pancreatic stump tightly against the serosa of the intestine and stomach to promote healing. The cap-shaped structure on the pancreatic-jejunal anastomosis device has one or more threading holes, and sutures can be used to assist in fixing the pancreatic stump and the gastrointestinal wall. The slender rod of the pancreatic-jejunal anastomosis device is a hollow structure, which can conduct the pancreatic juice in the pancreatic duct into the gastrointestinal tract without corroding the anastomosis site.

[0071] The cap-shaped structure on the pancreaticojejunostomy stapler is made of alloy elastic material and has more than 2 tips. It is in a constrained state before being released into the pancreatic duct. After entering the pancreatic duct, it elastically releases, and the pointed valves penetrate the gastrointestinal wall and pierce into the pancreatic stump to grip firmly, enabling the anastomosis of the gastrointestinal tract and the pancreas without the need for sutures. At the same time, the barbs protruding on the slender rod can be reduced or even absent, minimizing the dilation of the pancreatic duct.

[0072] The structure of the pancreaticojejunostomy stapler is the same, but the material is made of absorbable materials such as the metal material magnesium or polydioxanone (PPDO). It will be absorbed by the human body after the anastomotic site heals and will not remain in the body, improving the patient's quality of life after surgery.

[0073] Specifically, as Figure 2 and Figure 3 shown, the pancreaticojejunostomy stapler has a slender rod 11 with a diameter less than 5 mm. The slender rod 11 is a through-hole 13 with a hollow structure. A anastomosis cap 12 is fixed on the slender rod 11. The anastomosis cap 12 is circular or oval, and has a cap threading hole 17 on it. One side of the anastomosis cap 12 is a concave structure 19, which makes the intestinal wall fit better with the pancreatic stump. One end of the slender rod 11 has a rod threading hole 16, and the other end has a plurality of pancreatic fluid holes 15. The rod tail 18 at the other end has a tail wedge structure, and the wedge structure is convenient for inserting into the pancreatic duct. There is one or more inverted cone structures 14 on the slender rod 11, which can be inserted into the pancreatic duct and fixed in the pancreatic duct, so that pancreatic fluid does not flow out. The hollow pipe of the slender rod 11 allows pancreatic fluid to flow into the gastrointestinal tract.

[0074] As Figure 4 and Figure 5 shown, the pancreaticojejunostomy stapler has a slender rod 11 with a diameter less than 5 mm. The slender rod 11 is a through-hole 13 with a hollow structure. A anastomosis cap 12 is fixed on the slender rod 11. As Figure 6-1 , Figure 6-2 and Figure 6-3 shown, the anastomosis cap 12 is petal-shaped. The edge of the anastomosis cap 12 has two or more pointed valves 121. The pointed valves 121 on the petal-shaped anastomosis cap 12 are provided with pointed valve holes 122. The petal-shaped anastomosis cap 12 is fixed on the slender rod 11. The anastomosis cap 12 can be a high-elastic metal thin sheet structure, and the material can be a shape memory alloy, having two states. In the constrained state, it is in the Figure 4 shown anastomosis state and can be placed in the release device of the pancreaticojejunostomy stapler. For example, it can be placed in a laparoscopic stapler. The state of the pancreaticojejunostomy stapler before being placed in the laparoscopic stapler is the initial state as Figure 5 shown.

[0075] As Figure 4 and Figure 5As shown, one end of the slender rod 11 has a rod threading hole 16, and the other end has a plurality of pancreatic juice holes 15. The rod tail 18 at the other end has a tail wedge structure, and the wedge structure facilitates insertion into the pancreatic duct. One or more inverted cone structures 14 are provided on the slender rod 11, which can be inserted into the pancreatic duct and fixed therein, so that pancreatic juice does not flow out. The hollow pipe of the slender rod 11 allows pancreatic juice to flow into the gastrointestinal tract.

[0076] During operation, as Figure 7 shown in the operation steps A, B, C and D, the pancreaticojejunostomy stapler can be used alone. As Figure 6-3 shown, two or more valve tips 121 of the metal elastic anastomotic cap 12 are provided with valve tip holes 122. Symmetric valve tip holes 122 can be connected by sutures to restrain the valve tip holes 122, without the need to use the release device of the pancreaticojejunostomy stapler to restrain the valve tip holes 122. After the pancreaticojejunostomy stapler reaches the surgical position, the suture is cut, and the valve tips 121 of two or more metal elastic anastomotic caps 12 deform in opposite directions. After the valve tips 121 penetrate the gastrointestinal wall, they pierce into the pancreatic stump and grasp firmly to complete the anastomosis.

[0077] In the constrained state, the diameter of the valve tips 121 of two or more elastic anastomotic caps 12 is less than 15 mm, and they can reach the surgical site through the endoscopic access.

[0078] When the anastomotic cap 12 is circular or elliptical, the operation steps of the pancreaticojejunostomy stapler are the same. When used alone, as Figure 2 and Figure 3 shown, the working principle of the pancreaticojejunostomy stapler is as Figure 8 shown in the operation steps A, B, C and D. The concave structure 19 of the anastomotic cap 12 makes the intestinal wall fit better with the pancreatic stump. One or more inverted cone structures 14 on the slender rod 11 enable the slender rod 11 to be fixed in the pancreatic duct after insertion, so that pancreatic juice does not flow out. The rod threading hole 16 at one end of the slender rod 11 and the cap threading hole 17 on the anastomotic cap 12 allow the suture to pass through. The rod threading hole 16 can be used to pull the stapler. Using a suture to pass through the cap threading hole 17 can make the pancreaticojejunostomy stapler suture and grasp the gastrointestinal wall and the pancreatic stump firmly to reinforce the anastomosis.

[0079] The release device can also be used to restrain the pancreaticojejunostomy stapler. For example, during operation, use an endoscope as Figure 9 shown to push the constrained pancreaticojejunostomy stapler into the surgical position. The valve tips 121 of two or more elastic anastomotic caps 12 deform in opposite directions. After the valve tips 121 penetrate the gastrointestinal wall, they pierce into the pancreatic stump and grasp firmly to complete the anastomosis. The principle is the same as that of the pancreaticojejunostomy stapler as Figure 2 and Figure 3 shown.

[0080] As Figure 4 、Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown in Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 , the pancreaticojejunostomy stapler 1 is placed inside the cannula 21 of the release device 2. 1 and 21 are coaxial. The anastomosis cap 12 fixed on 1 has characteristic cuspids 121. 121 cooperates with the cannula groove 212 of the cannula 21 and can slide on its surface. The cannula 21 has a retractable cannula end 211, and the diameter of 211 is smaller than the diameter of the cuspid 121, so that the pancreaticojejunostomy stapler 1 placed in the cannula 21 will not fall off. The release device 2 is equipped with a firing trigger 22, a handle 23 and a retraction button 24. The firing trigger 22 and the retraction button 24 are connected to the firing rod 25. The firing rod 25 has a firing rod end 251. The rod tail 18 at the tail of the pancreaticojejunostomy stapler can be placed in the firing rod end 251 and cooperate with it.

[0081] During operation, as shown in Figure 4 , Figure 13 , Figure 14 and Figure 15 , pull the firing trigger 22 to make the firing rod 25 move forward. The firing rod end 251 pushes the cuspid 121 so that the pancreaticojejunostomy stapler 1 slides forward along the cannula 21. After the anastomosis cap 12 leaves the cannula end 211, as shown in Figure 16 , continue to slide until the pancreaticojejunostomy stapler 1 is pushed out. The firing rod end 251 is disengaged from the cuspid 121. At this time, pull the retraction button 24 backward to complete the release of the pancreaticojejunostomy stapler 1.

[0082] The schematic diagram of the pancreaticojejunostomy stapler entering the pancreas and jejunum through the laparoscopic pancreaticojejunostomy stapler is as shown in Figure 18 . Among them, the laparoscopic pancreaticojejunostomy stapler with a petal-shaped anastomosis cap can also be replaced by a laparoscopic pancreaticojejunostomy stapler with a disc-shaped anastomosis cap, as shown in Figure 19 . Figure 18 Figure 19 Figure 19 as shown in Figure 19 . Figure 20 Figure 20 is a schematic diagram of installing a pancreaticojejunostomy stapler with a disc-shaped anastomosis cap into a laparoscopic releaser to form a laparoscopic pancreaticojejunostomy stapler. The schematic diagram of using a laparoscopic pancreaticojejunostomy stapler with a disc-shaped anastomosis cap to anastomose and suture the pancreas and jejunum is as shown in Figure 21 . Steps A, B, C, and D respectively show the process of the pancreas and jejunum from separation to anastomosis and suture. Figure 21 Figure 21

[0083] In another embodiment, the cannula 21 can be smooth without the cannula groove 212. The cuspid 121 of the pancreaticojejunostomy stapler 1 is coaxially matched with the firing rod end 251 on the firing rod 25, so that the pancreaticojejunostomy stapler 1 can be axially pushed out in the cannula 21.

[0084] In another embodiment, the firing rod end 251 of the firing rod 25 can be magnetic. The rod tail 18 of the pancreaticojejunostomy stapler 1 is made of metal and can be adsorbed by the firing rod end 251 and can be smoothly disengaged after the release is completed. ​​​​​​​​​​

[0085] In another embodiment, as Figure 17 shown, the firing trigger of the release device 2 can be replaced by a motor to achieve electric firing and retraction.

[0086] It should be noted that although several units / modules or sub-units / modules of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0087] Although the spirit and principles of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed, and the division of each aspect does not mean that the features in these aspects cannot be combined for benefit. This division is only for the convenience of description. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A laparoscopic pancreaticojejunostomy stapler, characterized in that, The laparoscopic pancreatico-enteric stapler comprises a pancreatico-enteric stapler (1), the pancreatico-enteric stapler (1) comprising a slender rod (11), an anastomosis cap (12), a through hole (13) and a pancreatic juice hole (15), the anastomosis cap (12) being fixed on the slender rod (11), the slender rod (11) being a hollow structure having the through hole (13), and one end of the slender rod (11) having the pancreatic juice hole (15); The laparoscopic pancreatico-enteric stapler further comprises a release device (2), the pancreatico-enteric stapler (1) is built into the release device (2), the release device (2) comprises a sleeve (21), the pancreatico-enteric stapler (1) is built into the sleeve (21), and the pancreatico-enteric stapler (1) is coaxial with the sleeve (21); The diameter of the slender rod (11) is less than 5 mm, and / or the number of the pancreatic juice holes (15) is greater than one, and / or the anastomotic cap (12) is provided with at least one cap threading hole (17); The anastomotic cap (12) is elastic, and the edge of the anastomotic cap (12) has at least two cusps (121); The sleeve (21) has a sleeve groove (212), the cusp (121) cooperates with the sleeve groove (212), and the cusp (121) slides on the surface of the sleeve groove (212); The cusp (121) of the anastomotic cap (12) is turned inward or outward, and the sleeve (21) has a contracted sleeve end (211), and the diameter of the sleeve end (211) is smaller than the diameter of the cusp (121); The cusp (121) is provided with a cusp hole (122); and / or the anastomotic cap (12) is made of a memory alloy.

2. The endoscopic pancreatic-jejunal anastomosis device according to claim 1, wherein, The pancreatico-enteric stapler further comprises an inverted cone structure (14). At least one inverted cone structure (14) is arranged on the slender rod (11). The inverted cone structure (14) and the pancreatic juice hole (15) are located on the same side of the anastomotic cap (12).

3. The endoscopic pancreatic-enteric anastomosis device according to claim 1, wherein, The anastomotic cap (12) is circular or oval; And / or one side of the anastomotic cap (12) is a concave structure (19), and the concave structure (19) and the pancreatic juice hole (15) are located on the same side of the anastomotic cap (12).

4. The endoscopic pancreatic-enteric anastomosis device according to claim 1, wherein, The other end of the slender rod (11) is provided with a rod threading hole (16); And / or the other end of the slender rod (11) is a rod tail (18), and the rod tail (18) has a wedge-shaped structure.

5. The endoscopic pancreatic-enteric anastomosis device according to claim 4, wherein, The release device (2) is equipped with a firing trigger (22), a handle (23), a retract button (24) and a firing rod (25); the firing trigger (22) and the retract button (24) are connected to the firing rod (25); the firing rod (25) has a firing rod end (251); the rod tail (18) is placed in the firing rod end (251); and the rod tail (18) is connected to the firing rod end (251).

6. The endoscopic pancreaticojejunostomy stapler according to any one of claims 1 to 5, characterized in that, The laparoscopic pancreatico-enteric stapler is a manual laparoscopic pancreatico-enteric stapler or an electric laparoscopic pancreatico-enteric stapler.

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