Positioning anti-slip covered tracheal stent

Abstract

The utility model relates to the technical field of tracheal stents, in particular to a positioning anti-sliding covered tracheal stent which comprises a first stent, a supporting mechanism and a protecting mechanism. Supporting mechanisms are connected to the upper portion and the lower portion of the first support, and a protection mechanism is connected to the outer side of the first support. The supporting mechanism comprises an upper arc-shaped rod, an upper recycling rope, a first C-shaped rod, a second support, a second C-shaped rod, a third support, a lower arc-shaped rod and a lower recycling rope, and the upper portion of the first support is fixedly connected with the upper arc-shaped rod. According to the positioning anti-slip covered trachea stent, the upper arc-shaped rod, the first C-shaped rod, the second C-shaped rod and the lower arc-shaped rod expand outwards to form a plurality of outer convex parts which are attached and fixed to the wall of a trachea cavity, and then the covered trachea stent is positioned and anti-slip; anti-tumor and anti-hyperplasia drugs are slowly released from the outer slow-release holes and the inner slow-release holes and enter the trachea to exert the drug effect, and then the covered tracheal stent is used for treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to tracheal stent technical field, concretely is a kind of positioning anti-sliding film tracheal stent. BACKGROUND

[0002] Film tracheal stent is a kind of medical instrument, mainly used to support airway, treat airway stenosis, obstruction or other pathological state. It is usually used for patients who need to keep airway open, especially those patients whose trachea or bronchus is narrowed due to tumor, inflammation, trauma and other reasons. The characteristics of film tracheal stent are that there is a special film or coating on the surface of the stent to enhance its function, improve biological compatibility, reduce complications and improve treatment effect. The existing film tracheal stent still has certain defects when in use, such as;

[0003] The existing film tracheal stent is usually a straight and flat structure, which is easy to shift after installation, thereby affecting use, and most of them cannot inhibit excessive proliferation of granulation tissue and prevent local infection of airway tissue. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of positioning anti-sliding film tracheal stent to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of positioning anti-sliding film tracheal stent, comprising: first support, support mechanism and protection mechanism;

[0006] The upper and lower parts of the first support are connected with the support mechanism, and the outer side of the first support is connected with the protection mechanism;

[0007] The support mechanism comprises: upper arc-shaped rod, upper recovery rope, first C-shaped rod, second support, second C-shaped rod, third support, lower arc-shaped rod and lower recovery rope, the upper part of the first support is fixedly connected with the upper arc-shaped rod, the upper arc-shaped rod is slidably penetrated with the upper recovery rope, and the bottom of the upper arc-shaped rod is fixedly connected with the first C-shaped rod.

[0008] Preferably, the bottom of the first C-shaped rod is fixedly connected with the second support, and the bottom of the second support is fixedly connected with the second C-shaped rod.

[0009] Preferably, the bottom of the second C-shaped rod is fixedly connected with the third support.

[0010] Preferably, the bottom of the third support is fixedly connected with the lower arc-shaped rod, and the lower arc-shaped rod is slidably penetrated with the lower recovery rope.

[0011] Preferably, the protection mechanism comprises: an outer coating layer, an inner coating layer, a sealing stop, an outer slow-release hole and an inner slow-release hole, the outer coating layer is connected to the outer side of the first support and the support mechanism, and the inner coating layer is connected to the inner side wall of the first support and the support mechanism.

[0012] Preferably, the sealing stop is connected between the outer coating layer and the inner coating layer.

[0013] Preferably, the outer coating layer and the inner coating layer are filled with an antitumor and antiproliferative drug, and the antitumor and antiproliferative drug can be paclitaxel, mitomycin C, rapamycin, dexamethasone and the like.

[0014] Preferably, the inner wall of the outer coating layer is provided with an outer slow-release hole, and the inner wall of the inner coating layer is provided with an inner slow-release hole.

[0015] Compared with the prior art, the positioning and anti-sliding coated tracheal stent has the advantages that: the upper arc-shaped rod, the first C-shaped rod, the second C-shaped rod and the lower arc-shaped rod are expanded outward to form a plurality of outward protruding portions, which are fixedly attached to the tracheal cavity wall, so that the coated tracheal stent is positioned and anti-sliding; the antitumor and antiproliferative drug is slowly released from the outer slow-release hole and the inner slow-release hole, enters the trachea and plays a drug effect, so that the coated tracheal stent is treated, and specific contents are as follows:

[0016] 1. The first support, the second support and the third support are connected by the upper arc-shaped rod, the first C-shaped rod, the second C-shaped rod and the lower arc-shaped rod, and are expanded outward to form a plurality of outward protruding portions, which are better fixedly attached to the tracheal cavity wall and are not easy to slide and cause displacement, so that the coated tracheal stent is positioned and anti-sliding;

[0017] 2. After the coated tracheal stent is installed on the tracheal cavity wall, the antitumor and antiproliferative drug is slowly released from the outer slow-release hole and the inner slow-release hole, enters the trachea and plays a drug effect, so that the coated tracheal stent is treated. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of a three-dimensional cross-sectional structure of the outer coating layer of the utility model;

[0019] Figure 2 It is a schematic diagram of a three-dimensional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of a front view structure of the first support of the utility model;

[0021] Figure 4 It is a schematic diagram of a three-dimensional structure of the sealing stop of the utility model.

[0022] In the figure: 1, the first support; 2, support mechanism; 201, upper arc-shaped rod; 202, upper recovery rope; 203, first C-shaped rod; 204, second support; 205, second C-shaped rod; 206, third support; 207, lower arc-shaped rod; 208, lower recovery rope; 3, protection mechanism; 301, outer film layer; 302, inner film layer; 303, sealing block; 304, outer slow-release hole; 305, inner slow-release hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-3 The utility model provides a kind of technical solutions: a positioning anti-sliding film-covered tracheal stent, comprising: first support 1, support mechanism 2 and protection mechanism 3;The upper and lower of first support 1 are connected with support mechanism 2, and the outer side of first support 1 is connected with protection mechanism 3;Support mechanism 2 includes: upper arc-shaped rod 201, upper recovery rope 202, first C-shaped rod 203, second support 204, second C-shaped rod 205, third support 206, lower arc-shaped rod 207 and lower recovery rope 208, the upper of first support 1 is fixedly connected with upper arc-shaped rod 201, upper arc-shaped rod 201 is slidably penetrated with upper recovery rope 202, the bottom of upper arc-shaped rod 201 is fixedly connected with first C-shaped rod 203, the bottom of first C-shaped rod 203 is fixedly connected with second support 204, the bottom of second support 204 is fixedly connected with second C-shaped rod 205, the bottom of second C-shaped rod 205 is fixedly connected with third support 206, the bottom of third support 206 is fixedly connected with lower arc-shaped rod 207, and lower arc-shaped rod 207 is slidably penetrated with lower recovery rope 208.

[0025] In specific implementation, first support 1, second support 204 and third support 206 are connected by upper arc-shaped rod 201, first C-shaped rod 203, second C-shaped rod 205 and lower arc-shaped rod 207, and expand outward to form multiple convex parts, and the muscle is swollen, to prevent the outer side of the film-covered tracheal stent from being smooth, so that it can be better fixed to the wall of tracheal cavity and is not easy to slide and cause displacement, to position and prevent the film-covered tracheal stent from sliding.

[0026] Please refer to Figure 1 , Figure 2 and Figure 4It is known that the protective mechanism 3 includes: an outer membrane layer 301, an inner membrane layer 302, a sealing barrier 303, an outer sustained-release hole 304, and an inner sustained-release hole 305. The outer membrane layer 301 is connected to the outer side of the first support 1 and the support mechanism 2, and the inner membrane layer 302 is connected to the inner sidewall of the first support 1 and the support mechanism 2. The sealing barrier 303 is connected between the outer membrane layer 301 and the inner membrane layer 302. Antitumor and antiproliferative drugs are filled between the outer membrane layer 301 and the inner membrane layer 302. Antitumor and antiproliferative drugs can be paclitaxel, mitomycin C, rapamycin, dexamethasone, etc. An outer sustained-release hole 304 is opened on the inner wall of the outer membrane layer 301, and an inner sustained-release hole 305 is opened on the inner wall of the inner membrane layer 302.

[0027] In practice, antitumor and antiproliferative drugs are injected into the gap between the outer membrane layer 301 and the inner membrane layer 302. After the covered tracheal stent is installed on the tracheal cavity wall, the antitumor and antiproliferative drugs are slowly released from the outer sustained-release hole 304 and the inner sustained-release hole 305, enter the trachea and exert their effects, so that the covered tracheal stent can perform treatment.

[0028] In summary: When using this type of positioning and anti-slip covered tracheal stent, firstly, the covered tracheal stent is placed into the catheter, the catheter is moved to the trachea where the stent needs to be installed, and the covered tracheal stent is pushed out of the catheter. The covered tracheal stent naturally expands and presses against the inner wall of the trachea to support the trachea. Then, antitumor and antiproliferative drugs are slowly released from the outer sustained-release hole 304 and the inner sustained-release hole 305, enter the trachea and exert their effects to treat the trachea where the covered tracheal stent is installed. When retrieving the covered tracheal stent, a retrieval catheter is inserted into the trachea where the covered tracheal stent is installed. The clamp in the retrieval catheter pulls the upper retrieval rope 202 to slide within the upper arc-shaped rod 201, contracting the upper arc-shaped rod 201, reducing one end of the covered tracheal stent, and pulling it into the retrieval catheter for retrieval. The covered tracheal stent is then removed from the trachea. The contents not described in detail in this description are prior art known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning and anti-slip covered tracheal stent, comprising: The first bracket (1), the support mechanism (2), and the protection mechanism (3) are characterized in that; The first bracket (1) is connected to a support mechanism (2) above and below, and a protection mechanism (3) is connected to the outside of the first bracket (1). The support mechanism (2) includes: an upper arc-shaped rod (201), an upper recovery rope (202), a first C-shaped rod (203), a second bracket (204), a second C-shaped rod (205), a third bracket (206), a lower arc-shaped rod (207), and a lower recovery rope (208). The upper arc-shaped rod (201) is fixedly connected to the upper part of the first bracket (1). The upper recovery rope (202) slides through the upper arc-shaped rod (201). The first C-shaped rod (203) is fixedly connected to the bottom of the upper arc-shaped rod (201).

2. The positioning and anti-slip covered tracheal stent according to claim 1, characterized in that: The bottom of the first C-shaped rod (203) is fixedly connected to a second bracket (204), and the bottom of the second bracket (204) is fixedly connected to a second C-shaped rod (205).

3. The positioning and anti-slip covered tracheal stent according to claim 2, characterized in that: The bottom of the second C-shaped rod (205) is fixedly connected to a third bracket (206).

4. The positioning and anti-slip covered tracheal stent according to claim 3, characterized in that: The bottom of the third support (206) is fixedly connected to a lower arc-shaped rod (207), and a lower recovery rope (208) slides through the lower arc-shaped rod (207).

5. A positioning and anti-slip covered tracheal stent according to claim 1, characterized in that: The protective mechanism (3) includes: an outer film layer (301), an inner film layer (302), a sealing block (303), an outer slow-release hole (304), and an inner slow-release hole (305). The outer film layer (301) is connected to the outer side of the first bracket (1) and the support mechanism (2), and the inner film layer (302) is connected to the inner sidewall of the first bracket (1) and the support mechanism (2).

6. A positioning and anti-slip covered tracheal stent according to claim 5, characterized in that: A sealing stop (303) is connected between the outer film layer (301) and the inner film layer (302).

7. A positioning and anti-slip covered tracheal stent according to claim 5, characterized in that: The space between the outer membrane layer (301) and the inner membrane layer (302) is filled with an anti-tumor and anti-proliferative drug, which may be paclitaxel, mitomycin C, rapamycin, dexamethasone, etc.

8. A positioning and anti-slip covered tracheal stent according to claim 5, characterized in that: The outer membrane layer (301) has an outer slow-release pore (304) on its inner wall, and the inner membrane layer (302) has an inner slow-release pore (305) on its inner wall.

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