Absorbable pancreatic duct jejunum anastomosis stent
Through the van der Waals mechanics principle and polylactic acid material, the absorbable pancreatic duct jejunal anastomosis stent designed with the design of polylactic acid, the problem of cumbersome fixation methods and pancreatic leakage in the existing technology is solved, and simple and reliable fixation and automatic falloff are achieved, which improves the convenience of the operation and Security.
Patent Information
- Application Number
- CN202420393618.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing method of fixing the pancreatic duct jejunal anastomosis stent is cumbersome and complex, which increases the difficulty of operation of medical staff and the pain of patients, and there is a risk of pancreatic leakage.
The absorbable pancreatic duct jejunal anastomosis stent designed using the van der Waals mechanics principle. Through the design of the stent tube and annular disk, multiple adsorption protrusions are used to form van der Waals force, so as to achieve the fixation of the stent with the pancreatic duct and jejunum, and polylactic acid material is used to facilitate the convenience of It falls off automatically after absorption by the human body.
The fixation process of the stent is simplified, the fixation reliability is improved, the pancreatic leakage is avoided, and the residue after the operation is reduced through automatic shedding, improving the convenience and safety of the operation.
Smart Images
Figure CN222323596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an absorbable pancreaticojejunostomy bracket. Background Art
[0002] Pancreaticoduodenectomy is one of the most difficult operations in hepatobiliary and pancreatic surgery. In recent years, with the continuous improvement of medical level, the mortality rate of pancreaticoduodenectomy has decreased, but the incidence of postoperative complications remains high. Patients often need a second operation due to poor pancreatic drainage and pancreatic leakage. Therefore, whether the anastomosis between the pancreatic duct and the jejunum is smooth is crucial and is the key to the success of the operation. The role of the pancreatic duct stent is to prevent the collapse of the anastomosis on the one hand, and to drain the pancreatic juice on the other hand.
[0003] The existing pancreatic duct jejunal anastomosis stent is fixed to the pancreatic duct and jejunum by sutures. The fixing operation is cumbersome and complicated, causing great inconvenience to medical staff, and increasing the time for fixing the pancreatic duct jejunal anastomosis stent, increasing the pain of the patient. Therefore, it is necessary to propose an absorbable pancreatic duct jejunal anastomosis stent to solve the above-mentioned problems. Utility Model Content
[0004] The utility model aims to provide an absorbable pancreatic duct jejunal anastomosis stent, which has the characteristics of being easy to put and fix into the pancreatic duct and jejunum of a patient, providing convenience for medical personnel to put and fix the pancreatic duct jejunal anastomosis stent, being firmly fixed and having a simple fixing method, adopting the principle of van der Waals mechanics, and applying this technology to avoid pancreatic leakage at the needle hole.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an absorbable pancreatic duct jejunal anastomosis stent, comprising a stent tube, a ring disk is fixedly connected to the right side of the stent tube, a plurality of first adsorption protrusions distributed in a ring are fixedly connected to the outer wall of the stent tube, the other ends of the plurality of first adsorption protrusions are all inclined to the right close to the ring disk with an inclination angle of 45 degrees, a plurality of second adsorption protrusions are fixedly connected to the left side of the ring disk, the other ends of the plurality of second adsorption protrusions are all inclined outward with an inclination angle of 45 degrees, and the lengths of the plurality of first adsorption protrusions and the plurality of second adsorption protrusions are both 2 μm.
[0006] In order to facilitate the anastomosis of the stent tube with the inside of the pancreatic duct, the absorbable pancreatic duct-jejunal anastomosis stent of the present invention is preferably a stent tube with an outer diameter of 3 mm, a wall thickness of 0.1 mm, and an inner diameter of 2.9 mm.
[0007] In order to facilitate the anastomosis between the annular disk and the inside of the jejunum, the absorbable pancreatic duct jejunal anastomosis stent of the present invention is preferably a 4 mm outer diameter an 3 mm inner diameter annular disk, the distance between the outer diameter of the annular disk and the outer diameter of the stent tube is 0.5 cm.
[0008] In order to make the pancreatic duct jejunal anastomosis stent automatically fall off into the jejunum and then be discharged from the body, as a preferred absorbable pancreatic duct jejunal anastomosis stent of the present invention, the stent tube, the annular disk, the multiple first adsorption protrusions and the multiple second adsorption protrusions are all made of polylactic acid.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] When the utility model is used, the stent tube enters the pancreatic duct, and the annular disk is inserted into the intestinal cavity through the hole in the jejunal wall. After the stent tube enters the pancreatic duct, the stent tube is tightly adsorbed to the inside of the pancreatic duct by means of a plurality of first adsorption protrusions and a plurality of second adsorption protrusions, thereby achieving fixation of the stent tube and the annular disk. Thus, the pancreatic duct-jejunal anastomosis stent is convenient to be placed and fixed in the pancreatic duct and jejunum of the patient, providing convenience for medical staff to place and fix the pancreatic duct-jejunal anastomosis stent, the fixation is firm and the fixation method is simple, the van der Waals mechanics principle is adopted, and the application of this technology avoids pancreatic leakage at the needle eye. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is an overall cross-sectional view of the utility model;
[0012] Figure 2 It is the overall front view of the utility model;
[0013] Figure 3 It is the overall left side view of the utility model;
[0014] Figure 4 This is a structural diagram of the support tube of the utility model.
[0015] In the figure: 1, support tube; 2, annular disk; 3, first adsorption protrusion; 301, second adsorption protrusion. DETAILED DESCRIPTION
[0016] See also Figures 1 to 4 The absorbable pancreatic duct-jejunal anastomosis stent includes a stent tube 1, a ring disk 2 is fixedly connected to the right side of the stent tube 1, a plurality of first adsorption protrusions 3 distributed in a ring are fixedly connected to the outer wall of the stent tube 1, the other ends of the plurality of first adsorption protrusions 3 are all inclined to the right close to the ring disk 2 with an inclination angle of 45 degrees, a plurality of second adsorption protrusions 301 are fixedly connected to the left side of the ring disk 2, the other ends of the plurality of second adsorption protrusions 301 are all inclined outward with an inclination angle of 45 degrees, and the lengths of the plurality of first adsorption protrusions 3 and the second adsorption protrusions 301 are both 2 μm.
[0017] In this embodiment: when in use, the stent tube 1 enters the pancreatic duct, and the annular disk 2 is inserted into the intestinal cavity through the hole in the jejunal wall. After the stent tube 1 enters the pancreatic duct, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 form van der Waals force, so that the stent tube 1 is tightly adsorbed to the inside of the pancreatic duct, thereby achieving fixation of the stent tube 1 and the annular disk 2. Therefore, the pancreatic duct jejunal anastomosis stent is easy to be placed and fixed in the patient's pancreatic duct and jejunum, which provides convenience for medical staff to place and fix the pancreatic duct jejunal anastomosis stent. The fixation is firm and the fixation method is simple. The van der Waals mechanics principle is adopted, and this technology is applied to avoid pancreatic leakage in the needle eye.
[0018] As a technical optimization solution of the utility model, the outer diameter of the bracket tube 1 is 3 mm, the wall thickness is 0.1 mm, and the inner diameter is 2.9 mm.
[0019] In this embodiment, the outer diameter of the stent tube 1 is 3 mm, the wall thickness is 0.1 mm, and the inner diameter is 2.9 mm, so that the stent tube 1 can be easily matched with the inside of the pancreatic duct (the outer diameter of the stent tube 1 can be designed to be different specifications of 2-4 mm).
[0020] As a technical optimization solution of the utility model, the outer diameter of the annular disk 2 is 4 mm, the inner diameter is 3 mm, and the distance between the outer diameter of the annular disk 2 and the outer diameter of the support tube 1 is 0.5 cm.
[0021] In this embodiment, the outer diameter of the annular disk 2 is 4 mm, the inner diameter is 3 mm, and the distance between the outer diameter of the annular disk 2 and the outer diameter of the stent tube 1 is 0.5 cm, thereby facilitating the annular disk 2 to fit the inside of the jejunum.
[0022] As a technical optimization solution of the present invention, the support tube 1, the annular disk 2, the plurality of first adsorption protrusions 3 and the plurality of second adsorption protrusions 301 are all made of polylactic acid.
[0023] In this embodiment: the materials of the stent tube 1, the annular disk 2, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 are all polylactic acid, and thus the stent tube 1, the annular disk 2, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 lose their supporting function after being absorbed by the human body, and the pancreatic duct jejunostomy stent automatically falls off into the jejunum and then is discharged from the body.
[0024] Working principle: When in use, the stent tube 1 enters the pancreatic duct, and the annular disk 2 is inserted into the intestinal cavity through the hole in the jejunal wall. After the stent tube 1 enters the pancreatic duct, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 form van der Waals force, so that the stent tube 1 is tightly adsorbed to the inside of the pancreatic duct, thereby fixing the stent tube 1 and the annular disk 2;
[0025] Since the materials of the stent tube 1, the annular disk 2, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 are all polylactic acid, the stent tube 1, the annular disk 2, the multiple first adsorption protrusions 3 and the multiple second adsorption protrusions 301 lose their supporting function after being absorbed by the human body, and the pancreatic duct jejunostomy stent automatically falls off into the jejunum and is then discharged from the body.
[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An absorbable pancreaticojejunostomy stent, comprising a stent tube (1), characterized in that: The right side of the support tube (1) is fixedly connected to an annular disk (2), and the outer wall of the support tube (1) is fixedly connected to a plurality of first adsorption protrusions (3) distributed in an annular manner, the other ends of the plurality of first adsorption protrusions (3) are all inclined to the right close to the annular disk (2) and the inclination angle is 45 degrees, and the left side of the annular disk (2) is fixedly connected to a plurality of second adsorption protrusions (301), the other ends of the plurality of second adsorption protrusions (301) are all inclined outwards and the inclination angle is 45 degrees, and the lengths of the plurality of first adsorption protrusions (3) and the plurality of second adsorption protrusions (301) are both 2 μm.
2. The absorbable pancreaticojejunostomy stent according to claim 1, characterized in that: The support tube (1) has an outer diameter of 3 mm, a wall thickness of 0.1 mm, and an inner diameter of 2.9 mm.
3. The absorbable pancreaticojejunostomy stent according to claim 1, characterized in that: The outer diameter of the annular disk (2) is 4 mm, the inner diameter is 3 mm, and the distance between the outer diameter of the annular disk (2) and the outer diameter of the support tube (1) is 0.5 cm.
4. The absorbable pancreaticojejunostomy stent according to claim 1, characterized in that: The support tube (1), the annular disk (2), the plurality of first adsorption protrusions (3), and the plurality of second adsorption protrusions (301) are all made of polylactic acid.