CN113599031A

CN113599031A - Extensible anti-backflow pancreas stump anastomosis supporting tube

Info

Publication number: CN113599031A
Application number: CN202111008501.0A
Authority: CN
Inventors: 王铁功
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-05

Abstract

The invention relates to the technical field of medical instruments, and discloses an extensible anti-reflux pancreas stump anastomosis supporting tube, which solves the problem that pancreas fistula occurs because the pancreas intestine or pancreas stomach anastomosis can not avoid the risk of cracking in the existing pancreas stump anastomosis operation, and the anastomoses result in fistula of the anastomoses, and comprises a supporting outer sleeve, wherein one end of the supporting outer sleeve is connected with an anti-reflux component, one end of the supporting outer sleeve, which is far away from the anti-reflux component, is internally connected with a supporting inner sleeve, and a connecting film is connected between the supporting inner sleeve and the supporting outer sleeve; when the anastomotic stoma cracks, the supporting tube can still maintain the drainage function of the main pancreatic duct-small intestinal cavity or the gastric cavity, when the edema of the peripheral tissue of the anastomotic stoma is gradually subsided, the anastomotic stoma is gradually healed, and the supporting tube also gradually returns to the unstretched state; the invention can not generate pancreatic fistula and has extensibility.

Description

Extensible anti-backflow pancreas stump anastomosis supporting tube

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an extensible anti-backflow pancreas stump anastomosis supporting tube.

Background

The anastomosis of the stumps of pancreas after the excision of a pancreas is a medical difficulty which is close to a century, and the anastomosis technology of pancreas stumps is most commonly applied to the pancreaticoduodenectomy, which is the most common operation mode for the duodenum, the lower segment of the bile duct, the pancreatic head (including the hamate of pancreas) and the ampulla of the duodenum and tumors.

To date, the methods of anastomosing stump pancreases can be divided into two categories: first, a pancreas-stomach anastomosis; second, pancreas-small intestine anastomosis. The methods of pancreaticostomy are also two: firstly, a binding type inosculating mode is adopted; second, the pancreatico-mucosal side-to-side anastomosis of the pancreas-small intestine; on the basis, a plurality of improved methods are derived, because the tissue form of the pancreas is completely different from that of the small intestine or the stomach, the failure probability of the pancreaticogastric or pancreaticointestinal anastomosis is very high, and the rupture of the anastomotic stoma means that pancreatin, small intestinal fluid and bile break through the anastomotic stoma and enter the abdominal cavity, namely, pancreatic fistula occurs.

In the currently widely used pancreatico-entero-pancreatico anastomosis operation, an operator often selects a proper support tube according to the diameter of a main pancreatic duct of a pancreas, but a professional pancreas stump anastomosis support tube which is widely used is not provided so far, most doctors can obtain local materials such as a perfusion tube, a catheter and the like, an individual customized support tube is only a common catheter, and the intensive research and design are not carried out on the mechanism of a pancreatic fistula. Small intestinal juice, gastric juice and bile flow back into the anastomotic orifice, and pancreatin from the stump pancreas can also enter the anastomotic orifice to cause inflammatory reaction in the anastomotic orifice; we have now demonstrated that the inflammatory response of the pancreatic stump and the reflux of digestive juices, bile, are present in reality, resulting in poor healing of the pancreatic stump with the stomach or small intestine.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the extensible anti-reflux pancreas stump anastomosis support tube, and the problem that pancreas fistula occurs due to the fact that the risk of cracking cannot be avoided in pancreas intestine or pancreas stomach anastomosis in the existing pancreas stump anastomosis operation is effectively solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an anti pancreas stump stay tube that coincide of backflows of extensible formula, is including supporting outer tube, anti refluence subassembly, supporting interior sleeve pipe, connecting film, tectorial membrane support and naked support, it is connected with anti refluence subassembly to support outer tube one end, supports the outer tube and keeps away from anti refluence subassembly one end internal connection and support interior sleeve pipe, supports interior sleeve pipe and supports and be connected with connecting film between the outer tube, supports interior sleeve pipe one end and is connected with tectorial membrane support, and tectorial membrane support one end outwards extends there is naked support.

Preferably, the anti-backflow component comprises a connecting pipe connected with the supporting outer sleeve, one end of the connecting pipe is connected with an anti-backflow film, and an opening at the tail end of the anti-backflow film is in a natural attaching state.

Preferably, the supporting outer sleeve, the supporting inner sleeve, the covered stent and the bare stent are coaxially arranged.

Preferably, the connection film is a cylindrical connection film, one end of the connection film is fixedly connected to the end part of the support outer sleeve, and the other end of the connection film is fixedly connected to the support inner sleeve.

Preferably, the supporting inner sleeve and the covered stent are tightly connected.

Preferably, the frame body structures of the covered stent and the bare stent are both arranged in a net structure.

Preferably, the frame structure is made of memory material.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, when the anastomotic stoma is not cracked, the supporting tube device only plays a role of an anti-backflow supporting tube; when the anastomotic stoma cracks, the supporting tube can still maintain the drainage function of the main pancreatic duct-small intestinal cavity or the gastric cavity, when the edema of the peripheral tissue of the anastomotic stoma is gradually subsided, the anastomotic stoma is gradually healed, and the supporting tube also gradually returns to the unstretched state;

(2) the supporting outer sleeve and the supporting inner sleeve are connected through the connecting film, so that the supporting outer sleeve and the supporting inner sleeve can generate relative displacement, the whole supporting tube device still maintains the airtightness, the one-way pancreatin flow of the pancreatic stump-small intestinal cavity or gastric cavity is maintained, pancreatin leakage cannot occur, pancreatin cannot enter an anastomotic opening, pancreas fistula cannot occur, and the supporting tube device has extensibility and can artificially establish a buffer mechanism for unavoidable drawing tension;

(3) the invention prevents digestive juice from the small intestine cavity or the stomach cavity from flowing back into the anastomotic orifice through the support interior and the gap between the support tube and the small intestine wall or the stomach wall; prevent pancreatin from entering the anastomotic opening through the gap between the supporting tube and the main pancreatic duct wall.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic structural view of the present invention in a stretched state;

FIG. 5 is a front view of the invention in a stretched condition;

FIG. 6 is a cross-sectional view of the invention in a stretched condition;

in the figure: 1. supporting the outer sleeve; 2. an anti-backflow component; 201. a connecting pipe; 202. an anti-reflux film; 3. supporting the inner sleeve; 4. connecting the films; 5. covering a membrane stent; 6. a bare stent.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, as shown in fig. 1-6, the present invention includes a supporting outer sheath 1, an anti-reflux assembly 2, a supporting inner sheath 3, a connecting membrane 4, a covered stent 5 and a bare stent 6, wherein one end of the supporting outer sheath 1 is connected with the anti-reflux assembly 2, the anti-reflux assembly 2 can provide anti-reflux capability for the whole device, so as to prevent digestive juice from flowing back from the small intestine cavity or the stomach cavity into the pancreas or the anastomotic orifice, in addition, the small intestine wall or the stomach wall performs purse-string suture on the tail port part of the supporting outer sheath 1, so as to prevent digestive juice from flowing back into the anastomotic orifice through the small intestine wall or the gap between the stomach wall and the supporting tube, the supporting inner sheath 3 is connected inside one end of the supporting outer sheath 1 far from the anti-reflux assembly 2, the connecting membrane 4 is connected between the supporting inner sheath 3 and the supporting outer sheath 1, the inner diameter of the supporting inner sheath 3 is smaller than that of the supporting outer sheath 1, then under the effect of connecting film 4, conveniently support interior sleeve pipe 3 and support outer tube 1 relatively and remove, realize the extensible characteristic of whole stay tube device promptly, it is connected with tectorial membrane support 5 to support interior sleeve pipe 3 one end, zonulae occludens between support interior sleeve pipe 3 and the tectorial membrane support 5, guarantee no seepage, tectorial membrane support 5 can prevent that pancreatin from passing through the gap between support or support and the pancreatic duct wall and getting into in the identical mouth, tectorial membrane support 5 one end outwards extends has naked support 6, naked support 6 can be convenient for pancreatin to flow into stay tube device, provide radial holding power, support outer tube 1, support interior sleeve pipe 3, tectorial membrane support 5 and naked support 6 are coaxial setting

In the second embodiment, on the basis of the first embodiment, the anti-reflux assembly 2 includes a connecting pipe 201 connected with the supporting outer sleeve 1, one end of the connecting pipe 201 is connected with an anti-reflux film 202, and an opening at the end of the anti-reflux film 202 is in a natural fit state, so that the anti-reflux capacity can be achieved, and digestive juice is prevented from flowing back into the pancreas or the anastomotic orifice from the small intestine cavity or the stomach cavity.

In the third embodiment, on the basis of the first embodiment, the connection film 4 is a cylindrical connection film, one end of the connection film 4 is fixedly connected to the end portion of the support outer sleeve 1, and the other end of the connection film 4 is fixedly connected to the support inner sleeve 3, so that the support outer sleeve 1 and the support inner sleeve 3 can be relatively displaced, the support inner sleeve 3 can move towards the tail portion of the support outer sleeve 1, and the connection film 4 ensures that the support outer sleeve 1 and the support inner sleeve 3 are kept free of leakage in the position moving process, and the extensible mechanism can ensure that the support tube is complete and free of leakage after the anastomotic opening cracks, and the anastomotic opening cracks without pancreatic fistula.

Fourth, on the basis of first embodiment, the frame structure of tectorial membrane support 5 and naked support 6 is the network structure setting, can radially support the power to fix in pancreas owner pancreas intraductally, and frame structure material is the memory material, has fine deformation recovery ability.

The working principle is as follows: when in use, the supporting outer sleeve 1 and the anti-backflow component 2 are jointly placed in a small intestine cavity or a stomach cavity of an anastomosis port, and the small intestine wall or the stomach wall is subjected to purse-string suture at the port part at the tail part of the supporting outer sleeve 1, so that digestive juice is prevented from flowing back to the anastomosis port through a gap between the small intestine wall or the stomach wall and the supporting tube;

because of the characteristics of pancreas, after the pancreas and intestine are anastomosed or the pancreas and stomach are anastomosed, the inflammation of the pancreas stump can not be avoided, thus, no matter which anastomosis method is used by a doctor, no matter which suture line is used by the doctor, the risk of the rupture of the anastomotic stoma can not be avoided, in the process of the rupture of the anastomotic stoma, when the supporting tube device is wholly stressed by longitudinal pulling force, because the supporting outer sleeve 1 part is sutured with the small intestine wall or the stomach wall, the covered stent 5 and the naked stent 6 part are fixed in the pancreas main pancreatic duct by means of the radial supporting force of the stent, only the supporting outer sleeve 1 and the supporting inner sleeve 3 of the supporting tube device can generate relative displacement because of loose connection, but because the connecting film 4 part is a soft film, even if the supporting outer sleeve 1 and the supporting inner sleeve 3 generate relative displacement, the supporting tube device can still maintain the airtightness, and maintain the unidirectional pancreatic enzyme flow between the pancreas stump and the small intestine cavity or the stomach cavity, pancreatic enzyme cannot leak out and enter the anastomotic opening;

when the anastomotic stoma is not cracked, the supporting tube device only plays a role of an anti-backflow supporting tube; when the anastomotic opening cracks, the supporting tube can still maintain the drainage function of the main pancreatic duct-small intestinal cavity or the gastric cavity, and when the edema of the peripheral tissues of the anastomotic opening gradually subsides, the anastomotic opening gradually heals, and the supporting tube gradually returns to the unstretched state.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti pancreas stump stay tube that coincide of backflows of extensible formula, includes support outer tube (1), anti backflows subassembly (2), support interior sleeve pipe (3), connect film (4), tectorial membrane support (5) and naked support (6), its characterized in that: support outer tube (1) one end and be connected with anti backflow subassembly (2), support outer tube (1) and keep away from anti backflow subassembly (2) one end internal connection and support interior sleeve pipe (3), support interior sleeve pipe (3) and support and be connected with between outer tube (1) connecting film (4), support interior sleeve pipe (3) one end and be connected with tectorial membrane support (5), tectorial membrane support (5) one end outwards extends there is bare support (6).

2. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 1, wherein: the anti-backflow component (2) comprises a connecting pipe (201) connected with the supporting outer sleeve (1), one end of the connecting pipe (201) is connected with an anti-backflow film (202), and an opening at the tail end of the anti-backflow film (202) is in a natural attaching state.

3. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 1, wherein: the supporting outer sleeve (1), the supporting inner sleeve (3), the covered stent (5) and the bare stent (6) are coaxially arranged.

4. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 1, wherein: the connecting film (4) is a cylindrical connecting film, one end of the connecting film (4) is fixedly connected to the end part of the supporting outer sleeve (1), and the other end of the connecting film (4) is fixedly connected to the supporting inner sleeve (3).

5. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 1, wherein: the supporting inner sleeve (3) and the covered stent (5) are tightly connected.

6. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 1, wherein: the frame body structures of the covered stent (5) and the naked stent (6) are all arranged in a net structure.

7. The extendable anti-reflux pancreatic stump anastomosis support tube of claim 6, wherein: the frame body structure material is the memory material.