Pancreaticoenterostomy connecting reinforcement structure

Abstract

The utility model provides a kind of pancreas intestine anastomosis connection reinforcing structure, it is related to the technical field of medical devices.Pancreas intestine anastomosis connection reinforcing structure includes anastomosis fixed pipe body and solid hydrogel;One end of anastomosis fixed pipe body is provided with outer fixing part, and outer fixing part can be in contact with the inner wall of duodenum;Solid hydrogel is arranged at the other end of anastomosis fixed pipe body, and the outer side wall of anastomosis fixed pipe body is provided with liquid hydrogel.The technical effect of improving pancreas intestine anastomosis effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a reinforced structure for pancreaticojejunostomy connection. Background Technology

[0002] After pancreatic head removal, pancreaticojejunostomy is required to allow pancreatic juice to flow back into the small intestine. This procedure involves making a small incision in the intestinal wall, then suturing the intestinal wall to the pancreatic cut and the pancreatic duct cut to seal the pancreatic cut and reconstruct the pancreaticojejunostomy.

[0003] Pancreaticoduodenectomy is a complex procedure, and pancreaticojejunostomy is a challenging step. Incomplete or poorly healed pancreaticojejunostomy can easily lead to pancreaticojejunostomy leakage, a serious postoperative complication with a high incidence rate and high subsequent treatment costs. Currently, one of the challenges of pancreaticoduodenectomy lies in the complexity of pancreaticojejunostomy. Utility Model Content

[0004] The purpose of this invention is to provide a reinforced structure for pancreaticojejunostomy connection to alleviate the technical problem of poor pancreaticojejunostomy effect in the prior art.

[0005] In a first aspect, the present invention provides a pancreaticojejunostomy connection reinforcement structure, including an anastomosis fixation tube and a solid hydrogel; One end of the anastomosis and fixation tube is provided with an external fixator, which can abut against the inner wall of the duodenum. The solid hydrogel is disposed at the other end of the anastomosis fixation tube, and the outer wall of the anastomosis fixation tube is disposed with liquid hydrogel.

[0006] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the aforementioned external fixing member adopts an expanding outer ring, and the expanding outer ring and the matching fixing tube body are an integral structure; The diameter of the expansion outer ring is larger than the diameter of the anastomosing and fixing tube.

[0007] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the transition section between the aforementioned expanding outer ring and the anastomosing and fixing tube body is provided with an absorbable drug film. The absorbable drug membrane is filled with the liquid hydrogel.

[0008] In conjunction with the first aspect, this utility model embodiment provides one possible implementation of the first aspect, wherein the edge of the aforementioned expanded outer ring is smooth.

[0009] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the external fixator is an annular airbag, and the annular airbag is disposed at the end of the anastomotic fixation tube.

[0010] In conjunction with the first aspect, this utility model embodiment provides a possible implementation of the first aspect, wherein the end of the aforementioned anastomotic fixation tube extending into the pancreas and intestine is provided with a connecting groove, and the bottom of the solid hydrogel is provided with a connecting block adapted to the connecting groove.

[0011] In conjunction with the first aspect, this utility model embodiment provides one possible implementation of the first aspect, wherein the above-mentioned solid hydrogel is ring-shaped.

[0012] In conjunction with the first aspect, this utility model provides a possible implementation of the first aspect, wherein an absorbable drug membrane is sleeved on the outer wall of the aforementioned anastomosis and fixation tube, and the liquid hydrogel is filled between the absorbable drug membrane and the anastomosis and fixation tube.

[0013] In conjunction with the first aspect, this utility model embodiment provides one possible implementation of the first aspect, wherein the absorbable medicated film is made of medical gelatin.

[0014] In conjunction with the first aspect, this utility model embodiment provides one possible implementation of the first aspect, wherein the above-mentioned solid hydrogel is methacrylamide gelatin.

[0015] Beneficial effects: This utility model provides a pancreaticojejunostomy reinforcement structure, including an anastomosis fixation tube and a solid hydrogel; one end of the anastomosis fixation tube is provided with an external fixator that can abut against the inner wall of the duodenum; the solid hydrogel is provided at the other end of the anastomosis fixation tube, and the outer wall of the anastomosis fixation tube is provided with liquid hydrogel.

[0016] Specifically, after a pancreaticoduodenectomy, an anastomosis fixation tube is inserted into the pancreas through the duodenum. Simultaneously, the connection between the pancreas and duodenum is sutured. One end of the anastomosis fixation tube, fitted with solid hydrogel, is inserted into the pancreas and duodenum, where the solid hydrogel expands tightly against the intestinal wall. The other end, fitted with an external fixator, abuts against the duodenal wall. This action of the anastomosis fixation tube compresses the connection between the duodenum and pancreas, promoting healing. Furthermore, the liquid and solid hydrogels on the anastomosis fixation tube further promote healing. The solid hydrogel dissolves within a pre-set time, causing the anastomosis fixation tube to dissolve and fall into the duodenum, eventually being expelled from the body through the intestines. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of the pancreaticojejunostomy reinforcement structure provided in an embodiment of this utility model; Figure 2 A schematic diagram showing the connection between the solid hydrogel and the anastomosis fixation tube in the pancreaticojejunostomy reinforcement structure provided in this embodiment of the utility model. Figure 3 This is a schematic diagram illustrating the use of the pancreaticojejunostomy reinforcement structure provided in this embodiment of the present invention.

[0019] icon: 100 - Fitting and fixing tube body; 110 - External fixing component; 120 - Connecting slot; 200 - Solid hydrogel; 210 - Connecting block; 300-Liquid Hydrogel; 400-Absorbable drug film; 500-duodenum; 600-Pancreas and Intestine. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0025] See Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a pancreaticojejunostomy reinforcement structure, including an anastomosis fixation tube 100 and a solid hydrogel 200; one end of the anastomosis fixation tube 100 is provided with an external fixator 110, which can abut against the inner wall of the duodenum 500; the solid hydrogel 200 is provided at the other end of the anastomosis fixation tube 100, and the outer wall of the anastomosis fixation tube 100 is provided with a liquid hydrogel 300.

[0026] Specifically, after performing a pancreaticoduodenectomy (500mm resection), the anastomosis fixation tube 100 is inserted into the pancreaticojejunum (600mm) through the duodenum (500mm). Simultaneously, the connection between the pancreaticojejunum (600mm) and duodenum (500mm) is sutured. One end of the anastomosis fixation tube 100, equipped with solid hydrogel 200, can be inserted into the pancreaticojejunum (600mm). The solid hydrogel 200 can expand tightly against the intestinal wall of the pancreaticojejunum (600mm). Furthermore, one end of the anastomosis fixation tube 100, equipped with an external fixator 110, can abut against the intestinal wall of the duodenum (500mm), thereby achieving anastomosis fixation. The function of the anastomotic fixation tube 100 is to press the connection between the duodenum 500 and the pancreatic intestine 600 together, promoting healing. At the same time, the liquid hydrogel 300 and solid hydrogel 200 on the anastomotic fixation tube 100 can further promote the healing of the duodenum 500 and the pancreatic intestine 600. The solid hydrogel 200 will dissolve within a pre-application time, so that the anastomotic fixation tube 100 and the pancreatic intestine 600 will no longer be tightly compressed. The anastomotic fixation tube 100 can detach from the pancreatic intestine 600 and fall into the duodenum 500, and then be discharged from the body through the intestine.

[0027] Solid hydrogel 200 utilizes methacryloyl gelatin (GelMA). Solid hydrogel 200 exhibits biocompatibility, biodegradability, rigidity, and the ability to promote cell adhesion and growth. Solid hydrogel 200 can be produced by mixing HA-SH thiolated hyaluronic acid, chitosan ammonium ions (Chitason-nh4+), and pure water in a liquid ratio of 2:1:1. GelMA undergoes free radical polymerization under ultraviolet (UV) or visible light (such as blue light) irradiation, forming a three-dimensional cross-linked network structure. The dissolution time is approximately two weeks.

[0028] It should be noted that an absorbable medicated film 400 is sleeved on the outer wall of the anastomosis fixation tube 100, and liquid hydrogel 300 is filled between the absorbable medicated film 400 and the anastomosis fixation tube 100. The liquid hydrogel 300 can be filled onto the anastomosis fixation tube 100 by medical personnel during the operation. After the operation is completed, the absorbable medicated film 400 is absorbed within a few hours, and the liquid hydrogel 300 between the absorbable medicated film 400 and the anastomosis fixation tube 100 can overflow to the suture site of the duodenum 500 and pancreas 600, thereby promoting wound healing.

[0029] The absorbable drug membrane 400 can be made of medical gelatin, or it can be made of absorbable composite chitosan guided drug membrane. Alternatively, those skilled in the art can choose the type of absorbable drug membrane 400 according to actual needs, as long as it can carry the liquid hydrogel 300 in the early stage of surgery and then be quickly absorbed and released after surgery.

[0030] It should also be noted that when medical personnel insert the anastomosis fixation tube 100, a solid hydrogel 200 is provided at the front end of the anastomosis fixation tube 100. The solid hydrogel 200 can expand and tighten the pancreas-intestine 600, thereby ensuring that the anastomosis fixation tube 100 will not fall out of the pancreas-intestine 600. As the front end of the anastomosis fixation tube 100 is inserted into the pancreas-intestine 600, the external fixator 110 at the tail end of the anastomosis fixation tube 100 can abut against the intestinal wall of the duodenum 500 and push the duodenum 500 toward the pancreas-intestine 600, thereby making the duodenum 500 and the pancreas-intestine 600 tightly abut together and promoting the healing of the duodenum 500 and the pancreas-intestine 600.

[0031] In addition, the anastomotic fixation tube 100 is a through structure on both sides, and the anastomotic fixation tube 100 will not affect the normal drainage of pancreatic juice.

[0032] See Figure 1 , Figure 2 and Figure 3As shown, in the optional embodiment, the end of the anastomotic fixation tube 100 that extends into the pancreas 600 is provided with a connecting groove 120, and the bottom of the solid hydrogel 200 is provided with a connecting block 210 that is adapted to the connecting groove 120.

[0033] Among them, the solid hydrogel 200 is ring-shaped.

[0034] Specifically, a connecting slot 120 is provided at one end of the anastomosis fixation tube 100 that extends into the pancreas 600, and a connecting block 210 is provided at the bottom of the solid hydrogel 200. The solid hydrogel 200 can be relatively fixed on the anastomosis fixation tube 100. The solid hydrogel 200 is directly solidified on the anastomosis fixation tube 100 by means of a mold and ultraviolet light irradiation.

[0035] See Figure 1 , Figure 2 and Figure 3 As shown, in the optional embodiment, the external fixator 110 adopts an expanding outer ring, and the expanding outer ring and the anastomosing fixation tube 100 are an integral structure; the diameter of the expanding outer ring is larger than the diameter of the anastomosing fixation tube 100.

[0036] The outer ring of the expansion ring has smooth edges.

[0037] Specifically, the external fixator 110 can be an expanding outer ring with a diameter larger than that of the anastomosis fixation tube 100, ensuring that the expanding outer ring can abut against the intestinal wall of the duodenum 500, so that the anastomosis fixation tube 100 can tightly adhere the intestinal wall of the duodenum 500 to the pancreas 600.

[0038] See Figure 1 , Figure 2 and Figure 3 As shown, in the optional embodiment, an absorbable drug membrane 400 is provided at the transition section between the expansion outer ring and the anastomosis and fixation tube 100; the absorbable drug membrane 400 is filled with liquid hydrogel 300.

[0039] Specifically, an absorbable drug membrane 400 is provided at the transition section between the expansion outer ring and the anastomosis fixation tube 100, and liquid hydrogel 300 is filled in the absorbable drug membrane 400. The rabbit hydrogel at the transition section between the expansion outer ring and the anastomosis fixation tube 100 can better diffuse to the junction of the duodenum 500 and the pancreas 600, promoting the healing of the duodenum 500 and the pancreas 600.

[0040] See Figure 1 , Figure 2 and Figure 3 As shown, in the optional embodiment, the external fixator 110 adopts an annular airbag, which is disposed at the end of the anastomotic fixation tube 100.

[0041] Specifically, the external fixator 110 can also use a ring-shaped balloon. The ring-shaped balloon is inflated before surgery, and its inflation nozzle is either a one-way valve or uses adhesive to ensure proper inflation. The ring-shaped balloon can abut against the duodenal wall.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A reinforced structure for pancreaticojejunostomy, characterized in that, include: The tube (100) and solid hydrogel (200) are anastomosed and fixed. One end of the anastomosis fixation tube (100) is provided with an external fixator (110), which can abut against the inner wall of the duodenum (500); The solid hydrogel (200) is disposed at the other end of the anastomosis fixation tube (100), and the outer wall of the anastomosis fixation tube (100) is provided with liquid hydrogel (300).

2. The pancreaticojejunostomy reinforcement structure according to claim 1, characterized in that, The external fixing member (110) adopts an expansion outer ring, and the expansion outer ring and the matching fixing tube body (100) are an integral structure; The diameter of the expansion outer ring is larger than the diameter of the anastomosing and fixing tube (100).

3. The pancreaticojejunostomy reinforcement structure according to claim 2, characterized in that, An absorbable drug film (400) is provided at the transition section between the expansion outer ring and the anastomosing and fixing tube (100). The absorbable drug membrane (400) is filled with the liquid hydrogel (300).

4. The pancreaticojejunostomy reinforcement structure according to claim 3, characterized in that, The edges of the expanded outer ring are smooth.

5. The pancreaticojejunostomy reinforcement structure according to claim 1, characterized in that, The external fixator (110) is an annular airbag, which is located at the end of the anastomotic fixation tube (100).

6. The pancreaticojejunostomy reinforcement structure according to any one of claims 1-5, characterized in that, The end of the anastomosis fixation tube (100) that extends into the pancreas (600) is provided with a connecting slot (120), and the bottom of the solid hydrogel (200) is provided with a connecting block (210) that is adapted to the connecting slot (120).

7. The pancreaticojejunostomy reinforcement structure according to claim 6, characterized in that, The solid hydrogel (200) is ring-shaped.

8. The pancreaticojejunostomy reinforcement structure according to any one of claims 1-5, characterized in that, The outer wall of the anastomosis fixation tube (100) is fitted with an absorbable drug membrane (400), and the liquid hydrogel (300) is filled between the absorbable drug membrane (400) and the anastomosis fixation tube (100).

9. The pancreaticojejunostomy reinforcement structure according to claim 8, characterized in that, The absorbable medicated film (400) is made of medical gelatin.

10. The pancreaticojejunostomy reinforcement structure according to any one of claims 1-5, characterized in that, The solid hydrogel (200) is made of methacrylamide gelatin.

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