Pancreatico-enteric anastomosis device

Abstract

The present invention provides a pancreatico-enteric stapler comprising a slender rod, an anastomosis cap, a through hole, and a pancreatic fluid hole. The anastomosis cap is fixed to the slender rod. The slender rod is a hollow structure with the through hole, and one end of the slender rod has a pancreatic fluid hole. The present invention proposes a novel pancreatico-enteric / gastric anastomosis method and apparatus that can replace the traditional method of suturing the pancreas and stomach with sutures. The pancreatico-enteric stapler can reestablish a pathway for pancreatic fluid to enter the digestive tract, prevent pancreatic fluid leakage, and facilitate the connection of the anastomosed stomach and pancreatic fluid stump. No sutures are required, and the anastomosis is convenient and secure.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, further to surgical instruments, and in particular to a pancreatico-enteric stapler. Background Art

[0002] Since the beginning of the 20th century, surgical procedures have explored the resection and anastomosis techniques for pancreatic and duodenal lesions. To date, there is no convenient, fast, and safe anastomosis device for pancreatic surgery. Conventional methods require sutures to cover the pancreatic stump and jejunum or stomach to allow pancreatic juice to enter the digestive tract. The specific suture steps are as follows: Figure 1 As shown, from step A to step D, the pancreatic stump and the jejunum or stomach are gradually sutured together.

[0003] The anastomosis method of wrapping the pancreatic stump with sutures requires excellent suturing technology. The operation is difficult and requires high intensity. Dense suturing will cause poor blood supply to the stump, affecting healing, blocking the pancreatic duct, and pancreatic juice leakage and corrosion, resulting in poor anastomosis effect and unsatisfactory patient survival rate.

[0004] Currently, there are no commercially available pancreatico-enteric staplers or release devices. Physicians in this field rely on their experience to create simple auxiliary anastomotic components and primarily use sutures for suturing. Suturing is difficult, time-consuming, and labor-intensive, and also results in a high incidence of postoperative pancreatic leakage.

[0005] Therefore, a safe and convenient pancreatico-enteric anastomosis device is badly needed in the surgical field. Summary of the Invention

[0006] The present invention provides a pancreaticojejunostomy device to at least solve the technical problems in the prior art of using sutures to embed the pancreatic stump, which requires good suturing technology, is difficult and requires high strength, and dense suturing may cause poor blood supply to the stump.

[0007] The present invention provides a pancreatico-enteric stapler, which 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.

[0008] 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.

[0009] Optionally, the pancreatico-enteric stapler further comprises an inverted cone structure, and at least one inverted cone structure is provided on the slender rod 1 . The inverted cone structure and the pancreatic juice hole are located on the same side of the anastomotic cap.

[0010] Optionally, the anastomotic cap is circular or elliptical; and / or one side of the anastomotic cap is a concave structure, and the concave structure and the pancreatic juice hole are located on the same side of the anastomotic cap.

[0011] Optionally, the anastomotic cap is provided with at least one cap threading hole.

[0012] Optionally, the other end of the above-mentioned slender rod has a rod threading hole; and / or the tail of the other end of the above-mentioned slender rod has a tail wedge-shaped structure.

[0013] Optionally, the anastomotic cap is elastic; and / or the edge of the anastomotic cap has at least two cusps.

[0014] Optionally, the cusp of the anastomotic cap is turned inward or outward.

[0015] Optionally, a cusp hole is provided on the cusp; and / or the anastomotic cap is made of memory alloy.

[0016] The application of the above-mentioned pancreaticojejunostomy device in pancreaticojejunostomy.

[0017] Aiming at the requirement that a pancreatico-enteric stapler is inconvenient to be placed into the body, the present invention designs a releasing device that can quickly place the pancreatico-enteric stapler into the body through a laparoscope channel.

[0018] The technical problem to be solved by the technical solution of the present invention is to invent a release device for a pancreatico-enteric stapler that can be safely and conveniently placed within the surgical site. The device can be passed through a laparoscopic approach. The device is manually or electrically operated with an internal firing lever to move forward and backward, pushing the built-in pancreatico-enteric stapler along a cannula into the surgical site, after which the device can be withdrawn. Depending on the material of the device, it can be made of a disposable polymer or a reusable metal.

[0019] This invention proposes a novel pancreatico-enteric / gastrostomy method and device that replaces the traditional method of suturing the pancreas and stomach with sutures. The pancreatico-enteric stapler reestablishes a pathway for pancreatic fluid to enter the digestive tract, prevents pancreatic fluid leakage, and facilitates the connection of the stomach and pancreatic stump. No sutures are required, resulting in a convenient and secure anastomosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily apparent by reading the following detailed description with reference to the accompanying drawings, in which several embodiments of the present invention are shown by way of example and not limitation, in which:

[0021] Figure 1 A schematic diagram of an alternative method of suturing a pancreatic stump and jejunum or stomach together provided in the prior art;

[0022] Figure 2 A schematic diagram of an optional pancreatico-enteric stapler with a disc-shaped anastomotic cap provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram showing the concave structure of a pancreatico-enteric stapler with a disc-shaped anastomotic cap provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of an optional pancreatico-enteric stapler with a petal-shaped anastomotic cap in an anastomotic state provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of an initial state of an optional pancreatico-enteric stapler with a petal-shaped anastomotic cap provided in an embodiment of the present invention;

[0026] Figure 6-1 A schematic diagram of an optional petal-shaped anastomotic cap provided in an embodiment of the present invention;

[0027] Figure 6-2 An optional petal-shaped anastomotic cap provided in an embodiment of the present invention Figure 6-1 Schematic diagram of the reverse side;

[0028] Figure 6-3 A schematic diagram of an optional petal-shaped anastomotic cap with a cusp hole provided in an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the working steps of an optional pancreatico-enteric stapler with a petal-shaped anastomotic cap used alone, provided by an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the working steps of an optional pancreatico-enteric stapler with a disc-shaped anastomotic cap used alone according to an embodiment of the present invention;

[0031] Figure 9 Schematic diagram of the assembly of an optional laparoscope as a release device for a pancreatico-enteric stapler provided in an embodiment of the present invention.

[0032] Reference numerals:

[0033] Slender rod 1, anastomosis cap 2, cusp 21, cusp hole 22, through hole 3, inverted cone structure 4, pancreatic juice hole 5, rod threading hole 6, cap threading hole 7, tail wedge structure 8, concave structure 9. DETAILED DESCRIPTION

[0034] The principles and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided solely to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. Rather, these embodiments are provided to make the disclosure of this application more thorough and complete, and to fully convey the scope of the disclosure of this application to those skilled in the art.

[0035] This embodiment Figures 1 to 9 shown.

[0036] An embodiment of the present invention provides a pancreatic-intestinal stapler, which includes a slender rod 1, an anastomosis cap 2, a through hole 3 and a pancreatic juice hole 5. The anastomosis cap 2 is fixed on the slender rod 1. The slender rod 1 is a hollow structure having the through hole 3. One end of the slender rod 1 has a pancreatic juice hole 5.

[0037] Furthermore, the diameter of the slender rod 1 is less than 5 mm; and / or the number of the pancreatic juice holes 5 is greater than one.

[0038] Furthermore, the pancreatico-enteric stapler further comprises an inverted cone structure 4 . At least one inverted cone structure 4 is provided on the slender rod 1 . The inverted cone structure 4 and the pancreatic juice hole 5 are located on the same side of the anastomotic cap 2 .

[0039] Furthermore, the anastomotic cap 2 is circular or elliptical; and / or one side of the anastomotic cap 2 is a concave structure 9 , and the concave structure 9 and the pancreatic juice hole 5 are located on the same side of the anastomotic cap 2 .

[0040] Furthermore, at least one cap threading hole 7 is provided on the anastomotic cap 2 .

[0041] Furthermore, the other end of the slender rod 1 has a rod threading hole 6; and / or the tail of the other end of the slender rod 1 has a tail wedge-shaped structure 8.

[0042] Furthermore, the anastomotic cap 2 is elastic; and / or the edge of the anastomotic cap 2 has at least two cusps 21 .

[0043] Furthermore, the cusp 21 of the anastomotic cap 2 is turned inward or outward.

[0044] Furthermore, the cusp 21 is provided with a cusp hole 22; and / or the anastomotic cap 2 is made of a memory alloy.

[0045] The application of the above-mentioned pancreaticojejunostomy device in pancreaticojejunostomy.

[0046] The pancreatic stump and the intestine or stomach can be conveniently anastomosed together by using the above-mentioned pancreaticojejunostomy device in conjunction with sutures, and the hollow tube allows pancreatic juice to flow into the intestine or stomach.

[0047] The specific working principle is as follows:

[0048] The pancreatic-intestinal stapler has a slender shaft that can be inserted into the pancreatic duct. The barbed protrusions on the slender shaft can support the pancreatic duct to prevent pancreatic fluid from leaking, and the circular holes on the slender shaft allow pancreatic fluid to enter the hollow tube. The other end of the pancreatic-intestinal stapler has a round or oval cap. When the slender shaft enters the intestinal or gastric cavity and pierces the gastrointestinal cavity to be inserted into the pancreatic duct, it can fix the intestinal or gastric wall to the pancreatic stump, pressing the pancreatic stump against the serosal layer of the intestine and stomach to promote healing. The cap-shaped structure on the pancreatic-intestinal stapler has one or more threading holes, which can be used with sutures to assist in fixing the pancreatic stump and the gastrointestinal wall. The slender shaft of the pancreatic-intestinal stapler is a hollow structure that can guide pancreatic fluid from the pancreatic duct into the stomach and intestine without corroding the anastomosis.

[0049] The cap-shaped structure on the pancreatico-enteric stapler is made of alloy elastic material and has more than two tips. It is in a constrained state before being released into the pancreatic duct. After entering the pancreatic duct, it is elastically released, and the pointed valve penetrates the intestinal wall and pierces the pancreatic stump to grasp it, so that the intestinal wall and pancreas can be anastomosed without sutures. At the same time, the raised barbs on the slender rod can be reduced or even eliminated to minimize the expansion of the pancreatic duct.

[0050] The structure of the pancreatico-enteric stapler is the same, but it is made of absorbable materials such as metal magnesium or polydioxanone (PPDO). It will be absorbed by the human body after the anastomosis heals and will not remain in the body, thereby improving the patient's quality of life after surgery.

[0051] Specifically, if Figure 2 and Figure 3 As shown, the pancreatico-enteric stapler comprises a slender rod 1 with a diameter less than 5 mm. The slender rod 1 has a hollow through-hole 3. A circular or oval anastomosis cap 2 is fixed to the slender rod 1. The anastomosis cap 2 has a threading hole 7. One side of the anastomosis cap 2 has a concave structure 9, which allows for a better fit between the intestinal wall and the pancreatic stump. The slender rod 1 has a threading hole 6 at one end and multiple pancreatic juice holes 5 at the other end. The tail of the other end has a tail wedge structure 8, which facilitates insertion into the pancreatic duct. The slender rod 1 has one or more inverted cone structures 4, which allow it to be inserted into the pancreatic duct and fixed therein, preventing pancreatic juice from leaking out. The hollow tube of the slender rod 1 allows pancreatic juice to flow into the stomach and intestines.

[0052] like Figure 4 and Figure 5 As shown, the pancreatico-enteric stapler has a slender rod 1 with a diameter less than 5 mm. The slender rod 1 is a hollow through hole 3, and an anastomotic cap 2 is fixed on the slender rod 1. Figure 6-1 、 Figure 6-2 and Figure 6-3 As shown, the anastomosis cap 2 is petal-shaped, and the edge of the anastomosis cap 2 has two or more cusps 21. The cusps 21 on the petal-shaped anastomosis cap 2 are provided with cusp holes 22. The petal-shaped anastomosis cap 2 is fixed on the slender rod 1. The anastomosis cap 2 can be a highly elastic metal sheet structure with two states. In the constrained state, it is Figure 4 The anastomosis state shown can be placed in the release device of the pancreaticojejunal stapler, for example, it can be placed in the laparoscopic stapler. The state of the pancreaticojejunal stapler before being placed in the laparoscopic stapler is as follows. Figure 5 The initial state is shown.

[0053] like Figure 4 and Figure 5 As shown, the slender rod 1 has a rod threading hole 6 at one end, multiple pancreatic juice holes 5 at the other end, and a tail wedge-shaped structure 8 at the other end, which facilitates insertion into the pancreatic duct. The slender rod 1 has one or more inverted cone structures 4 that can be inserted into and fixed in the pancreatic duct to prevent pancreatic juice from flowing out. The hollow channel of the slender rod 1 allows pancreatic juice to flow into the stomach and intestines.

[0054] When operating, if Figure 7 The operation steps A, B, C and D shown in FIG. 1 can be performed using a pancreaticojejunal stapler alone, such as Figure 6-3 The two or more cusps 21 of the metal elastic anastomosis cap 2 shown are provided with cusp holes 22. The two symmetrical cusp holes 22 can be connected by sutures to constrain the cusp holes 22 without the need to constrain the cusp holes 22 with the release device of the pancreatico-enteric stapler. After the pancreatico-enteric stapler reaches the surgical position, the sutures are cut, and the two or more cusps 21 of the metal elastic anastomosis cap 2 are deformed in opposite directions. The cusps 21 penetrate the gastrointestinal wall and pierce the pancreatic stump and grasp it, completing the anastomosis.

[0055] The two or more elastic cusps 21 of the anastomotic cap 2 have a diameter less than 15 mm in a constrained state and can reach the surgical site through a laparoscope.

[0056] When the anastomosis cap 2 is circular or oval, the operation steps of the pancreatico-enteric stapler are the same. Figure 2 and Figure 3 The working principle of the pancreaticojejunal stapler shown is as follows Figure 8 In the illustrated steps A, B, C, and D, the concave structure 9 of the anastomosis cap 2 allows for a better fit between the intestinal wall and the pancreatic stump. One or more inverted cone structures 4 on the slender rod 1 secure the slender rod 1 within the pancreatic duct after insertion, preventing pancreatic fluid from escaping and instead flowing out through multiple pancreatic fluid holes 5 on the slender rod 1. The tail wedge-shaped structure 8 at the tail end of the slender rod 1 facilitates insertion into the pancreatic duct. The rod threading hole 6 at one end of the slender rod 1 and the cap threading hole 7 on the anastomosis cap 2 allow for the passage of sutures. The rod threading hole 6 can be used to pull the stapler, and threading sutures through the cap threading hole 7 allows the pancreatico-intestinal stapler to securely suture the intestinal wall and the pancreatic stump, strengthening the anastomosis.

[0057] A releaser can also be used to constrain the pancreaticojejunal stapler, for example, during operation, Figure 9The laparoscope shown pushes the pancreaticojejunal stapler in the restrained state into the surgical position, and the two or more elastic cusps 21 of the anastomotic cap 2 deform in opposite directions. The cusps 21 penetrate the gastrointestinal wall and pierce the pancreatic stump and grasp it firmly, completing the anastomosis. Figure 2 and Figure 3 The principle of the pancreaticojejunal stapler shown is the same.

[0058] It should be noted that although several units / modules or sub-units / modules of the device are mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of the present invention, the features and functions of two or more units / modules described above may be embodied in one unit / module. Conversely, the features and functions of one unit / module described above may be further divided and embodied by multiple units / modules.

[0059] While 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 into various aspects does not mean that the features of these aspects cannot be combined to benefit. Such division is merely for convenience of expression. The present invention is intended to encompass the spirit and scope of the appended claims.

Claims

1. A pancreatico-enteric stapler, characterized in that: The pancreatico-intestinal anastomosis device comprises a slender rod (1), an anastomosis cap (2), a through hole (3) and a pancreatic juice hole (5); the anastomosis cap (2) is fixed on the slender rod (1); the slender rod (1) is a hollow structure having the through hole (3); and one end of the slender rod (1) has the pancreatic juice hole (5); The pancreatico-enteric anastomosis device further comprises an inverted cone structure (4), at least one inverted cone structure (4) is provided on the slender rod (1), and the inverted cone structure (4) and the pancreatic fluid hole (5) are located on the same side of the anastomosis cap (2); The anastomotic cap (2) is circular or oval; One side of the anastomotic cap (2) is a concave structure (9), and the concave structure (9) and the pancreatic juice hole (5) are located on the same side of the anastomotic cap (2); The anastomotic cap (2) is an elastic structure; and the edge of the anastomotic cap (2) has at least two cusps (21); The anastomotic cap (2) is provided with at least one cap threading hole (7); The cusp (21) of the anastomotic cap (2) is turned inward or outward; The cusp (21) is provided with a cusp hole (22); And / or the material of the anastomotic cap (2) is memory alloy.

2. The pancreatico-enteric stapler according to claim 1, characterized in that: The diameter of the slender rod (1) is less than 5 mm; And / or the number of the pancreatic juice holes (5) is greater than one.

3. The pancreatico-enteric stapler according to claim 1, characterized in that: The other end of the slender rod (1) has a rod threading hole (6); And / or the tail of the other end of the slender rod (1) has a tail wedge-shaped structure (8).

4. Use of the pancreaticojejunal anastomosis device according to any one of claims 1 to 3 in pancreaticojejunostomy.

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