Leak-proof intestinal segmentation support

Abstract

The utility model relates to the technical field of medical instruments, and discloses a leakproof intestinal segmented stent which comprises a first oval net body, a plurality of first straight net bodies are arranged above the first oval net body, the first straight net bodies are connected through first connecting films, a Y-shaped connecting film is installed above one first straight net body, and a second connecting film is installed above the other first straight net body. Two ports of the Y-shaped connecting film are respectively provided with a second straight barrel net body, one side of each second straight barrel net body is provided with a second connecting film, and one end of each second connecting film is provided with a second oval net body. According to the utility model, the intestinal segmented stent is Y-shaped, fits the complex branch form of the intestinal tract of a human body, and accurately supports a lesion part. The first connecting film, the Y-shaped connecting film and the second connecting film cooperate with each other, so that the stent flexibly adapts to intestinal activities; the barb-shaped fixing thorns are distributed at intervals of 5-8 mm, the stent is firmly anchored, intestinal tract movement and body position changes are resisted, and practicability is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a leakage prevention intestinal tract segmented support. BACKGROUND

[0002] Intestinal tract segmented support is the medical instrument made of medical metal or high polymer material, is designed into tubular shape according to the physiological structure and pathological change of intestinal tract, is placed in specific part of intestinal tract, is used to open, dredge pathological change intestinal tract and maintain its patency.Leakage prevention intestinal tract segmented support is particularly key, and the digestive juice, excrement and other substances in intestinal tract are easy to leak when perforation, anastomotic mouth healing is poor, and serious problems such as abdominal cavity infection are caused, it can effectively prevent leakage, maintain the stability of intestinal tract internal environment and guarantee normal physiological function;Meanwhile, in interventional therapy, postoperative adjuvant therapy, the risk is reduced, and the safety and effectiveness of treatment are improved.

[0003] The physiological structure of intestinal tract is extremely complex, and the conventional straight cylinder support is difficult to properly cope with part intestinal diseases such as multiple intestinal stenosis, intestinal branch fistula and anastomotic mouth special position pathological change, and the support can accurately open the pathological position and maintain the patency of intestinal tract, and it can prevent leakage in all directions and avoid serious infection caused by intestinal content exosmosis, so the leakage prevention intestinal tract segmented support is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a leakage prevention intestinal tract segmented support, which aims at improving the problem that the straight cylinder used in the prior art is difficult to use in the special position of patient's lesion, thereby causing the decrease of the practicality of the support.

[0005] To achieve the above object, the utility model provides the following technical scheme: a leakage prevention intestinal tract segmented support, which comprises an elliptical net body one, a plurality of straight cylinder net bodies one are arranged above the elliptical net body one, the plurality of straight cylinder net bodies one are connected through a connecting film one, a Y-shaped connecting film is installed above one of the straight cylinder net bodies one, two ports of the Y-shaped connecting film are respectively provided with straight cylinder net bodies two, a connecting film two is arranged on one side of the straight cylinder net body two, an elliptical net body two is arranged at one end of the connecting film two, and the outer walls of the elliptical net body one, the straight cylinder net body one, the straight cylinder net body two and the elliptical net body two are all fixedly connected with fixed thorns.

[0006] Further, the elliptical net body one, the elliptical net body two, the straight cylinder net body one and the straight cylinder net body two are all woven by medical nickel-titanium alloy wire, the mesh hole is rhombic, and the aperture is accurately controlled at 0.8-1.5mm.

[0007] Further, the diameter of the wire of the straight cylinder net body one is controlled at 0.3-0.5mm, and the thickness of the tube wall is maintained at 0.8-1.2mm.

[0008] Further, the connecting film one, the Y-shaped connecting film and the connecting film two are all made of expanded polytetrafluoroethylene, and the thickness is maintained at 0.2-0.4 mm, which has excellent flexibility and biocompatibility; the connecting film one can be seamlessly attached to the adjacent straight tube net one; the edge of the connecting film one is polished at the attachment position of the straight tube net one, so that the transition is smooth, and the leakage of intestinal contents caused by the gap and wrinkles is prevented.

[0009] Further, the Y-shaped connecting film and the straight tube net two are connected by medical glue.

[0010] Further, the fixing thorn is in the form of a barb, and the length is accurately limited to 2-3 mm; the fixing thorn is made of medical titanium alloy material, and the surface is finely passivated to reduce damage to the intestinal mucosa; the fixing thorn is uniformly distributed along the outer wall of the elliptical net one, the straight tube net one, the straight tube net two and the elliptical net two at a specific interval, and the interval between adjacent fixing thorns is 5-8 mm, so as to firmly anchor the position of the stent and resist displacement caused by intestinal peristalsis and body position change.

[0011] Further, the elliptical net one, the straight tube net one, the straight tube net two and the elliptical net two are cooperatively connected, and the whole has a unique Y-shaped structure, so that when the stent is implanted in the intestinal branch lesion area, it can be seamlessly attached to the intestinal wall contour and fully support the diseased intestine.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, the overall shape is Y-shaped structure, the Y-shaped structure can support according to the complex branch shape of human intestinal tract, and the stent can move through the cooperation of the connecting film one, the Y-shaped connecting film and the connecting film two; when the stent is implanted in the intestinal branch lesion area, it can be seamlessly attached to the intestinal wall contour. ACCURACY

[0014] Figure 1 A three-dimensional structure schematic view of the anti-leakage intestinal segment stent is provided for the utility model;

[0015] Figure 2 A Y-shaped connecting film part structure schematic view of the anti-leakage intestinal segment stent is provided for the utility model;

[0016] Figure 3 is Figure 2 The enlarged view of A in the utility model.

[0017] Legend:

[0018] 1, oval net body one; 2, straight cylinder net body one; 3, connecting film one; 4, Y-shaped connecting film; 5, straight cylinder net body two; 6, connecting film two; 7, oval net body two; 8, fixed thorn. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Referring to Figure 1 , Figure 2 and Figure 3 , the present application provides an embodiment: a leakage-proof intestinal segment stent, comprising an oval net body one 1, a plurality of straight cylinder net bodies one 2 are arranged above the oval net body one 1, the plurality of straight cylinder net bodies one 2 are connected through a connecting film one 3, a Y-shaped connecting film 4 is installed above one straight cylinder net body one 2, the Y-shaped connecting film 4 is provided with a straight cylinder net body two 5 at two ports respectively, a connecting film two 6 is arranged on one side of the straight cylinder net body two 5, an oval net body two 7 is arranged at one end of the connecting film two 6, and the outer walls of the oval net body one 1, the straight cylinder net body one 2, the straight cylinder net body two 5 and the oval net body two 7 are all fixedly connected with fixed thorns 8.

[0021] Specifically, the elliptical net body one 1 serves as a stent basic structure, and plays a preliminary opening and supporting role in maintaining the local morphology of the intestinal tract by virtue of its appropriate curvature and size, preventing its collapse and obstruction. A plurality of straight cylinder net bodies one 2 are arranged above the elliptical net body one 1, which expands the longitudinal support range of the stent, adapts to the different directions and diameter changes of the intestinal tract, accurately supports the intestinal cavity, and ensures the smooth passage of intestinal contents. The plurality of straight cylinder net bodies one 2 are connected by a connecting film one 3, which is made of a material with good flexibility and biocompatibility, closely connects adjacent straight cylinder net bodies one 2, reinforces the overall structural continuity, avoids gaps between components, prevents intestinal content leakage, and can also buffer the pulling force generated during intestinal peristalsis, maintaining the stability of the stent. A Y-shaped connecting film 4 is installed above each straight cylinder net body one 2, which is designed according to the anatomical characteristics of the intestinal branch site, cleverly guides the shunt of intestinal contents, adapts to complex branch areas such as intestinal trifurcations, and allows the stent to accurately embed in the lesion. The two ports of the Y-shaped connecting film 4 are respectively provided with straight cylinder net bodies two 5, which penetrate into the branch intestinal tract, further strengthening the support force on the branch intestinal cavity and maintaining the normal diameter of the branch intestinal tract. One side of the straight cylinder net body two 5 is provided with a connecting film two 6, which stabilizes the connection between the straight cylinder net body two 5 and the elliptical net body two 7, prevents them from being disconnected due to frequent intestinal peristalsis, and eliminates the risk of leakage. One end of the connecting film two 6 is provided with an elliptical net body two 7, which corresponds to the elliptical net body one 1 to assist in opening the intestinal tract from another area and maintaining the overall stability of the intestinal tract. The outer walls of the elliptical net body one 1, the straight cylinder net body one 2, the straight cylinder net body two 5, and the elliptical net body two 7 are all fixedly connected with fixed spines 8, which are of a specific shape and length, implanted into the superficial layer of the intestinal mucosa, and firmly fixed in place by using the friction and anchoring force with the intestinal wall, resisting displacement caused by intestinal peristalsis and body position changes, and providing protection for the stable operation of the stent, thereby minimizing the risk of leakage caused by stent displacement.

[0022] Referring to Figure 1 , Figure 2 and Figure 3, the elliptical mesh body one 1, the elliptical mesh body two 7, the straight tube mesh body one 2 and the straight tube mesh body two 5 are all woven by medical nickel-titanium alloy wire, the mesh hole is rhombic, the aperture is accurately controlled in 0.8-1.5mm; the wire diameter of the straight tube mesh body one 2 is controlled in 0.3-0.5mm, the tube wall thickness is maintained in 0.8-1.2mm; the connecting film one 3, the Y-shaped connecting film 4 and the connecting film two 6 are all made of expanded polytetrafluoroethylene, the thickness is maintained in 0.2-0.4mm, has excellent flexibility and biocompatibility, the connecting film one 3 can seamlessly fit adjacent straight tube mesh body one 2; the edge of the connecting film one 3 and the fitting place of the straight tube mesh body one 2 are treated by special polishing, so that the transition is smooth, and leakage is prevented when the intestinal contents flow through the gap and wrinkles are retained; the connection between the Y-shaped connecting film 4 and the straight tube mesh body two 5 is bonded by medical glue; the fixed spine 8 is barb-shaped, the length is accurately limited in 2-3mm, is made of medical titanium alloy material, and the surface is finely passivated to reduce the damage to the intestinal mucosa; the fixed spine 8 is evenly distributed along the outer wall of the elliptical mesh body one 1, the straight tube mesh body one 2, the straight tube mesh body two 5 and the elliptical mesh body two 7 at a specific interval, the interval between adjacent fixed spines is 5-8mm, thereby firmly anchoring the position of the stent and resisting displacement caused by intestinal peristalsis and body position change; the elliptical mesh body one 1, the straight tube mesh body one 2, the straight tube mesh body two 5 and the elliptical mesh body two 7 are cooperatively spliced, and the whole presents a unique Y-shaped structure, so that when the stent is implanted in the intestinal branch lesion area, it can be tightly fitted with the intestinal wall contour and fully expand the diseased intestine;

[0023] Specifically, the elliptical net body one 1, the elliptical net body two 7, the straight cylinder net body one 2 and the straight cylinder net body two 5 are all woven by medical nickel-titanium alloy wire, the mesh is rhombic, the aperture is controlled in 0.8-1.5mm, the rhombic mesh is beneficial to the passage of intestinal fluid and gas, the appropriate aperture matches the characteristics of nickel-titanium alloy, which gives the net body radial supporting force, can counterbalance the peristaltic pressure of the intestinal tract, expand the corresponding part of the intestinal tract, and maintain the pipe diameter; the super-elasticity and shape memory characteristics of nickel-titanium alloy facilitate the endoscopic delivery of the stent to the lesion, which adapts to the intestinal environment, the wire diameter of the straight cylinder net body one 2 is 0.3-0.5mm, and the pipe wall thickness is maintained at 0.8-1.2mm, thereby ensuring the structural strength and adapting to the thickness of the intestinal tract, supporting the intestinal cavity and ensuring the passage of intestinal contents; the connecting membrane one 3, the Y-shaped connecting membrane 4 and the connecting membrane two 6 are made of expanded polytetrafluoroethylene with a thickness of 0.2-0.4mm, good flexibility and biocompatibility, the connecting membrane one 3 seamlessly fits the straight cylinder net body one 2, reinforcing the stent structure; the edges of the connecting membrane one 3 are polished at the joint with the straight cylinder net body one 2 to avoid gaps and wrinkles, prevent intestinal contents from retaining and leaking, and maintain the stability of the intestinal environment; the Y-shaped connecting membrane 4 and the straight cylinder net body two 5 are bonded by medical glue, which stabilizes the connection between the two, is beneficial to the diversion of intestinal contents by the Y-shaped connecting membrane 4, and adapts to the branching shape of the intestinal tract; the fixation spike 8 is in the shape of an inverted hook with a length of 2-3mm and is made of medical titanium alloy with surface passivation treatment to reduce damage to the intestinal mucosa; the fixation spike 8 is distributed along the outer wall of the relevant components at a distance of 5-8mm, and when the intestinal peristalsis and body position change, the inverted hook anchoring force resists external force to prevent the stent from shifting and maintain stability; the elliptical net body one 1, the straight cylinder net body one 2, the straight cylinder net body two 5 and the elliptical net body two 7 are spliced into a Y-shaped structure, which fits the anatomical characteristics of the intestinal branch lesion, implants into the intestinal tract to fit the intestinal wall contour, expands the diseased intestinal tract, avoids obstruction and leakage, ensures the smooth passage of intestinal contents, and maintains intestinal function.

[0024] Working principle: when the support is needed, the elliptical net body 1, the elliptical net body 2 7, the straight net body 1 2 and the straight net body 2 5 are all woven by medical nickel-titanium alloy wire, the rhombic mesh hole is set to 0.8-1.5mm aperture, which not only ensures the normal flow of intestinal fluid and gas, but also gives the part sufficient radial support force to balance the intestinal peristalsis pressure and maintain the intestinal expansion state; the specific wire diameter 0.3-0.5mm of the straight net body 1 2 and the pipe wall thickness 0.8-1.2mm make it adapt to different pipe diameter intestinal area, accurately support the intestinal cavity, the connecting link, the connecting membrane 3, the Y-shaped connecting membrane 4 and the connecting membrane 2 6 are made of expanded polytetrafluoroethylene material, 0.2-0.4mm thick, good flexibility and biocompatibility, the connecting membrane 3 is seamlessly attached to the straight net body 1 2, the specially polished edge eliminates gaps and wrinkles, preventing intestinal content leakage; the Y-shaped connecting membrane 4 is firmly bonded with the straight net body 2 5 by medical glue, guiding the intestinal contents to reasonably shunt to the branch intestine, fitting the complex branch shape of the intestine, in terms of fixation mechanism, the barb-shaped fixation spike 8, 2-3mm long, made of medical titanium alloy material and passivated on the surface, is distributed on the outer wall of each part at an interval of 5-8mm, when the intestinal peristalsis and body position change, the fixation spike locks the position of the support firmly by the anchoring force of the barb and the intestinal wall, resists external interference and prevents displacement, the overall Y-shaped support, the cooperative splicing of each part, when implanted in the intestinal branch lesion area, can seamlessly fit the intestinal wall contour, fully open the lesion intestine, let the intestinal contents pass smoothly, avoid the obstruction and leakage caused by poor fitting of the support, maintain the normal physiological function of the intestine and the stability of the internal environment.

[0025] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A leak-proof intestinal segment stent comprising an elliptical mesh body (1), characterized in that: The upper part of the elliptical net body one (1) is provided with a plurality of straight cylinder net bodies one (2), a plurality of the straight cylinder net bodies one (2) are connected through the connecting film one (3), the upper part of one of the straight cylinder net bodies one (2) is provided with a Y-shaped connecting film (4), the two ports of the Y-shaped connecting film (4) are provided with straight cylinder net bodies two (5) respectively, one side of the straight cylinder net bodies two (5) is provided with a connecting film two (6), one end of the connecting film two (6) is provided with an elliptical net body two (7), the outer walls of the elliptical net body one (1), the straight cylinder net body one (2), the straight cylinder net body two (5) and the elliptical net body two (7) are all fixedly connected with fixed thorns (8).

2. A leak resistant intestinal segment stent according to claim 1, wherein: The elliptical net body one (1), the elliptical net body two (7), the straight cylinder net body one (2) and the straight cylinder net body two (5) are all woven by medical nickel-titanium alloy wires, the mesh holes are rhombic, and the hole diameters are accurately controlled to be 0.8-1.5 mm.

3. The leak-resistant enteric segment stent of claim 1, wherein: The wire diameters of the straight cylinder net body one (2) are controlled to be 0.3-0.5 mm, and the pipe wall thicknesses are maintained to be 0.8-1.2 mm.

4. The leak-resistant enteric segment stent of claim 1, wherein: The materials of the connecting film one (3), the Y-shaped connecting film (4) and the connecting film two (6) are all expanded polytetrafluoroethylene, the thicknesses are maintained to be 0.2-0.4 mm, excellent flexibility and biocompatibility are achieved, the connecting film one (3) can be seamlessly attached to the adjacent straight cylinder net body one (2); the edges of the connecting film one (3) and the attachment positions of the straight cylinder net body one (2) are subjected to special polishing treatment, so that the connection transition is smooth, and leakage of intestinal contents caused by gaps and wrinkles is prevented.

5. The leak-resistant enteric segment stent of claim 1, wherein: The connection between the Y-shaped connecting film (4) and the straight cylinder net body two (5) is achieved through medical glue.

6. The leak-resistant enteric segment stent of claim 1, wherein: The fixed thorn (8) is in the form of an inverted hook, the length is accurately limited to be 2-3 mm, is made of medical titanium alloy material, and is subjected to fine passivation treatment on the surface, so that the damage to the intestinal mucosa is reduced; the fixed thorn (8) is uniformly distributed along the outer walls of the elliptical net body one (1), the straight cylinder net body one (2), the straight cylinder net body two (5) and the elliptical net body two (7) at a specific interval, the interval between adjacent fixed thorns is 5-8 mm, so that the position of the stent is firmly anchored, and displacement caused by intestinal peristalsis and body position change is resisted.

7. The leak-resistant enteric segment stent of claim 1, wherein: The elliptical net body one (1), the straight cylinder net body one (2), the straight cylinder net body two (5) and the elliptical net body two (7) are cooperatively spliced, and the whole is in the unique Y-shaped structure, so that when the stent is implanted into the intestinal branch lesion area, the stent can be tightly attached to the intestinal wall contour and can support the diseased intestinal tract in all directions.

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