Airway stent

Abstract

The invention provides an airway stent, and relates to the technical field of airway stents. Ozone gas is contained in the storage bottle body, the internal space of the storage bottle body is in a circular ring shape, and a sealing bottle cap is buckled on the top of the storage bottle body; the memory metal support is located in the annular space in the storage bottle body. A rubber sealing ring is installed in the sealing bottle cap, the storage bottle body is sleeved with a movable sleeve shell, and the top of the movable sleeve shell is connected with the sealing bottle cap. A spring is connected into the movable sleeve shell and connected with the storage bottle body. When the memory metal stent is placed in the airway of a patient, the melt degradation film is degraded by body fluid, the inhibition medicine is slowly released from the slow release micropores, and granulation hyperplasia in the airway is inhibited for a long time. The problems that an existing medical airway stent mostly adopts a coating film drug-containing mode for adjuvant therapy, due to the fact that an outer side coating film is thin, the drug content is small, the drug contained in the coating film can be completely released in a short time, and the effect is not long enough are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of airway stents, and particularly to an airway stent. Background Art

[0002] With the gradual aggravation of environmental pollution, various benign airway diseases such as traumatic scar stenosis, tracheomalacia, or malignant tissue lesions, airway stenosis caused by compression, etc. seriously threaten human health, significantly limit the respiratory function of patients, and even endanger life; once airway stenosis occurs, it is first necessary to ensure the patency of the patient's breathing through interventional medical devices, and then surgical or other treatment methods are adopted according to the patient's condition; airway stents are an important means for treating tracheal and bronchial stenosis, which can quickly reconstruct the airway and relieve symptoms such as dyspnea.

[0003] For example, in the Chinese patent "CN112121239B An airway drug-containing coated stent and its preparation method", the stent includes a stent body, the stent body is in a reticular structure and is made of a self-expanding alloy metal material; a blank film is coated on the inner layer of the stent body, and the blank film is made of a first polymer material; a drug-containing film is coated on the outer layer of the stent body, and the drug-containing film is made of a second polymer material, drugs and pharmaceutical excipients; the drug-containing coated stent can be used in cooperation with an airway pusher, and is sent into the patient's body by the airway pusher.

[0004] At present, most medical airway stents use the method of coating with drugs for adjuvant treatment. Since the outer coating is relatively thin and the drug content is small, the drugs contained in the coating will be released completely in a short time, and the efficacy is not lasting enough. Granulation hyperplasia will still occur in the later stage, resulting in cough and dyspnea, and targeted treatment is still required again. Summary of the Invention

[0005] The present disclosure relates to an airway stent, which solves the problem that most existing medical airway stents use the method of coating with drugs for adjuvant treatment. Since the outer coating is relatively thin and the drug content is small, the drugs contained in the coating will be released completely in a short time, and the efficacy is not lasting enough. Granulation hyperplasia will still occur in the later stage, resulting in cough and dyspnea, and targeted treatment is still required again.

[0006] In the first aspect of the present disclosure, an airway stent is provided, which specifically includes: a shape memory metal stent, a storage bottle body, a sealing bottle cap, a rubber sealing ring, a movable sleeve and a spring; ozone gas is contained inside the storage bottle body, the internal space of the storage bottle body is in a circular ring shape, and a sealing bottle cap is buckled on the top of the storage bottle body; the shape memory metal stent is located in the circular ring-shaped space inside the storage bottle body; a rubber sealing ring is installed inside the sealing bottle cap, a movable sleeve is sleeved outside the storage bottle body, and the top of the movable sleeve is connected to the sealing bottle cap; a spring is connected inside the movable sleeve, and the spring is connected to the storage bottle body.

[0007] Furthermore, the shape memory alloy stent is hollow inside, and it is filled with inhibitory drugs. The shape memory alloy stent is provided with slow-release micropores near its end, and a soluble degradation film is covered near the end of the shape memory alloy stent. The soluble degradation film is located outside the slow-release micropores. When the shape memory alloy stent is placed in the patient's airway, the soluble degradation film is degraded by body fluid, and the inhibitory drugs are slowly released from the slow-release micropores to continuously inhibit granulation hyperplasia in the airway. The soluble degradation film prevents the internal drug components of the inhibitory drugs from reacting with ozone gas during the storage of ozone gas in the shape memory alloy stent.

[0008] Furthermore, a sealing ring groove is provided inside the sealing bottle cap, and the rubber sealing ring is located in the sealing ring groove provided in the sealing bottle cap. The top of the storage bottle body is inserted into the sealing ring groove, and the top of the storage bottle body contacts the rubber sealing ring.

[0009] Furthermore, an L-shaped card slot is provided in a surrounding shape outside the sealing bottle cap, and a stress card block is provided on the outer side near the top of the storage bottle body. The stress card block is slidably connected to the L-shaped card slot provided in the sealing bottle cap.

[0010] Furthermore, a lower inclined surface is provided at the bottom of the stress card block, and an upper inclined surface is provided inside the L-shaped card slot. The upper inclined surface is in sliding contact with the lower inclined surface. When the shape memory alloy stent is inside the storage bottle body, the sealing bottle cap is connected to the top of the shape memory alloy stent, and the stress card block is connected to the L-shaped card slot. Rotating the sealing bottle cap, the upper inclined surface contacts and receives force from the lower inclined surface, driving the sealing bottle cap to move downward, making the rubber sealing ring closely contact the storage bottle body, effectively preventing the ozone gas inside the storage bottle body from leaking. When the shape memory alloy stent is in an ozone gas environment, it has a sterilization effect.

[0011] Furthermore, the movable sleeve is slidably connected to the inside of the storage bottle body. An inner guide post is provided at the bottom inside the storage bottle body, and a through hole is provided inside the movable sleeve. The inner guide post slidably penetrates through the through hole provided in the movable sleeve. A spring is sleeved outside the inner guide post. The top of the spring contacts the movable sleeve, and the bottom of the spring contacts the bottom end of the inner guide post. The spring provides an elastic reset effect on the movable sleeve.

[0012] Furthermore, limiting guide blocks are provided in a surrounding shape outside the storage bottle body, and movable holes are provided in a surrounding shape outside the movable sleeve. The limiting guide blocks are slidably connected to the movable holes provided in the movable sleeve. The limiting guide blocks are in sliding fit with the movable holes, providing a guiding effect on the up and down movement of the movable sleeve.

[0013] Further, positioning inserts are arranged in a surrounding shape at the top of the movable sleeve, and positioning slots are arranged in a surrounding shape at the bottom of the sealed bottle cap. The positioning inserts are slidably inserted into the positioning slots provided in the sealed bottle cap. When the force-receiving block moves to the innermost end of the L-shaped card slot, the positioning slot rotates to directly above the positioning insert, and the movable sleeve moves upward along the limit guide block under the influence of the spring thrust, so that the positioning insert is inserted into the positioning slot, preventing the storage bottle body from rotating in the reverse direction.

[0014] Further, an elastic frame is arranged at the bottom of the sealed bottle cap. The elastic frame is located inside the storage bottle body, and the bottom of the elastic frame contacts the end of the memory metal bracket. During the storage process of the memory metal bracket inside the storage bottle body, through the elastic deformation of the elastic frame itself, the opposite ends of the memory metal bracket respectively contact the storage bottle body and the elastic frame, achieving the fixing effect on the memory metal bracket.

[0015] The present invention provides an airway stent, which has the following beneficial effects:

[0016] When the present invention is in use, when the memory metal stent is placed in the patient's airway, the soluble degradation film is degraded by body fluids, inhibiting the slow release of the drug from the sustained-release micropores, continuously inhibiting granulation hyperplasia in the airway, effectively avoiding the occurrence of coughing and dyspnea caused by granulation hyperplasia after stent implantation. The soluble degradation film prevents the drug components inside the drug from reacting with ozone gas during the storage process of the memory metal stent in ozone gas, effectively ensuring the efficacy of the inhibitory drug.

[0017] In addition, when the memory metal stent is inside the storage bottle body, the sealed bottle cap is connected to the top of the memory metal stent, and the force-receiving block is connected to the L-shaped card slot. Rotate the sealed bottle cap, and the upper inclined surface and the lower inclined surface come into contact and receive force, driving the sealed bottle cap to move downward, so that the rubber sealing ring is in close contact with the storage bottle body, effectively preventing the ozone gas inside the storage bottle body from leaking. The memory metal stent is in an ozone gas environment, achieving a sterilization effect and ensuring the sterile storage effect of the memory metal stent; during the storage process of the memory metal stent inside the storage bottle body, through the elastic deformation of the elastic frame itself, the opposite ends of the memory metal stent respectively contact the storage bottle body and the elastic frame, achieving the fixing effect on the memory metal stent, preventing the memory metal stent from moving inside the storage bottle body, and ensuring the stability of the storage state of the memory metal stent.

[0018] In addition, a spring is used to achieve an elastic reset effect on the movable housing. The limit guide block is in sliding fit with the movable hole to guide the up and down movement of the movable housing. When the force-receiving block moves to the innermost end of the L-shaped card slot, the positioning slot rotates to directly above the positioning block. The movable housing moves upward along the limit guide block under the influence of the spring thrust, so that the positioning block is inserted into the positioning slot, preventing the storage bottle body from rotating in the reverse direction and ensuring the sealing effect of the memory metal bracket inside the storage bottle body. When the memory metal bracket needs to be used in surgery, move the movable housing upward, the spring is compressed under force, and the positioning block is separated from the positioning slot. Then, the sealing bottle cap can be rotated in the reverse direction to separate the sealing bottle cap from the storage bottle body, and the memory metal bracket inside can be taken out, with simple operation.

[0019] Other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0021] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0022] In the drawings:

[0023] Figure 1 The overall axonometric structure diagram of the present application is shown;

[0024] Figure 2 The axonometric structure diagram of the memory metal bracket inside the storage bottle body of the present application in the storage state is shown;

[0025] Figure 3 The axonometric structure diagram of the memory metal bracket of the present application is shown;

[0026] Figure 4 The end cross-sectional structure diagram of the memory metal bracket of the present application is shown;

[0027] Figure 5 The bottom axonometric structure diagram of the present application in the connection state of the storage bottle body and the movable housing is shown;

[0028] Figure 6 The cross-sectional structure diagram of the storage bottle body of the present application is shown;

[0029] Figure 7 The bottom axonometric structure diagram of the sealing bottle cap of the present application is shown;

[0030] Figure 8 The cross-sectional structure diagram of the sealing bottle cap of the present application is shown;

[0031] Figure 9 Shows a schematic cross-sectional structure diagram of the movable casing of the present application.

[0032] List of reference numerals

[0033] 1. Memory metal stent; 101. Sustained-release micropores; 102. Soluble degradation film; 2. Inhibitory drug; 3. Storage bottle body; 301. Stress clamping block; 3011. Lower inclined surface; 302. Inner guide post; 303. Limit guide block; 4. Sealing bottle cap; 401. Sealing ring groove; 402. L-shaped card slot; 4021. Upper inclined surface; 403. Positioning slot; 404. Elastic frame; 5. Rubber sealing ring; 6. Movable casing; 601. Through hole; 602. Movable hole; 603. Positioning insert block; 7. Spring. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1: Please refer to Figures 1 to 9 :

[0036] The present invention provides an airway stent, comprising: a memory metal stent 1, a storage bottle body 3, a sealing bottle cap 4, a rubber sealing ring 5, a movable casing 6 and a spring 7; the storage bottle body 3 contains ozone gas inside, the internal space of the storage bottle body 3 is annular, and the sealing bottle cap 4 is buckled on the top of the storage bottle body 3; the memory metal stent 1 is located in the annular space inside the storage bottle body 3; the rubber sealing ring 5 is installed inside the sealing bottle cap 4, the movable casing 6 is sleeved outside the storage bottle body 3, and the top of the movable casing 6 is connected to the sealing bottle cap 4; a spring 7 is connected inside the movable casing 6, and the spring 7 is connected to the storage bottle body 3; the memory metal inside the memory metal stent 1 is hollow, the inhibitory drug 2 is filled inside the memory metal stent 1, sustained-release micropores 101 are arranged near the end of the memory metal stent 1, and a soluble degradation film 102 is covered near the end of the memory metal stent 1. The soluble degradation film 102 is located outside the sustained-release micropores 101. When the memory metal stent 1 is placed in the airway of a patient, the soluble degradation film 102 is degraded by body fluid, and the inhibitory drug 2 is slowly released from the sustained-release micropores 101, persistently inhibiting granulation hyperplasia in the airway, effectively avoiding the occurrence of coughing and dyspnea caused by granulation hyperplasia after stent implantation. The soluble degradation film 102 prevents the internal drug components of the inhibitory drug 2 from reacting with ozone gas during the storage of ozone gas in the memory metal stent 1, effectively ensuring the efficacy of the inhibitory drug 2.

[0037] In the embodiment of the present disclosure, a sealing ring groove 401 is provided inside the sealing bottle cap 4, the rubber sealing ring 5 is located in the sealing ring groove 401 provided in the sealing bottle cap 4, the top of the storage bottle body 3 is inserted into the sealing ring groove 401, the top of the storage bottle body 3 contacts the rubber sealing ring 5, an L-shaped card slot 402 is provided in a surrounding shape outside the sealing bottle cap 4, a force-bearing card block 301 is provided on the outer side near the top of the storage bottle body 3, the force-bearing card block 301 is slidably connected to the L-shaped card slot 402 provided in the sealing bottle cap 4, a lower inclined surface 3011 is provided at the bottom of the force-bearing card block 301, an upper inclined surface 4021 is provided inside the L-shaped card slot 402, and the upper inclined surface 4021 is in sliding contact with the lower inclined surface 3011; With the above technical solution, when the memory metal bracket 1 is located inside the storage bottle body 3, the sealing bottle cap 4 is connected to the top of the memory metal bracket 1, the force-bearing card block 301 is connected to the L-shaped card slot 402, the sealing bottle cap 4 is rotated, the upper inclined surface 4021 contacts and is stressed by the lower inclined surface 3011, driving the sealing bottle cap 4 to move downward, so that the rubber sealing ring 5 is in close contact with the storage bottle body 3, effectively preventing the ozone gas inside the storage bottle body 3 from leaking. The memory metal bracket 1 is located in an ozone gas environment, achieving a sterilization effect and ensuring the sterile storage effect of the memory metal bracket 1.

[0038] In the embodiment of the present disclosure, the movable sleeve 6 is slidably connected inside the storage bottle body 3. An inner guide post 302 is provided at the bottom inside the storage bottle body 3. A through hole 601 is provided inside the movable sleeve 6. The inner guide post 302 slidably penetrates through the through hole 601 provided in the movable sleeve 6. A spring 7 is sleeved outside the inner guide post 302. The top of the spring 7 contacts the movable sleeve 6, and the bottom of the spring 7 contacts the bottom end of the inner guide post 302. A limiting guide block 303 is provided in a surrounding shape outside the storage bottle body 3. An activity hole 602 is provided in a surrounding shape outside the movable sleeve 6. The limiting guide block 303 is slidably connected to the activity hole 602 provided in the movable sleeve 6. A positioning plug 603 is provided in a surrounding shape at the top of the movable sleeve 6. A positioning slot 403 is provided in a surrounding shape at the bottom of the sealing bottle cap 4. The positioning plug 603 is slidably inserted into the positioning slot 403 provided in the sealing bottle cap 4;

[0039] With the above technical solution, the spring 7 plays an elastic reset effect on the movable sleeve 6, and the limit guide block 303 is in sliding fit with the movable hole 602, playing a guiding effect on the up and down movement of the movable sleeve 6; when the force receiving block 301 moves to the innermost end of the L-shaped card slot 402, the positioning slot 403 rotates to directly above the positioning block 603, and the movable sleeve 6 moves upward along the limit guide block 303 under the influence of the thrust of the spring 7, so that the positioning block 603 is inserted into the positioning slot 403, preventing the storage bottle body 3 from rotating in the reverse direction and ensuring the sealing effect of the memory metal bracket 1 inside the storage bottle body 3; when the memory metal bracket 1 needs to be used surgically, move the movable sleeve 6 upward, the spring 7 is stressed and contracts, the positioning block 603 is separated from the positioning slot 403, and the sealing bottle cap 4 can be rotated in the reverse direction to separate the sealing bottle cap 4 from the storage bottle body 3, and the memory metal bracket 1 inside can be taken out, and the operation is simple.

[0040] Embodiment 2, on the basis of Embodiment 1, an elastic frame 404 is provided at the bottom of the sealing bottle cap 4, the elastic frame 404 is located inside the storage bottle body 3, and the bottom of the elastic frame 404 is in contact with the end of the memory metal bracket 1; with the above technical solution, during the storage process of the memory metal bracket 1 inside the storage bottle body 3, through the elastic deformation of the elastic frame 404 itself, the relative ends of the memory metal bracket 1 are respectively in contact with the storage bottle body 3 and the elastic frame 404, playing a fixing effect on the memory metal bracket 1, avoiding the movement of the memory metal bracket 1 inside the storage bottle body 3, and ensuring the stability of the storage state of the memory metal bracket 1.

[0041] Working principle of this embodiment: The shape memory alloy stent 1 is located inside the storage bottle body 3, and the sealing bottle cap 4 is connected to the top of the shape memory alloy stent 1. The force-receiving block 301 is connected to the L-shaped card slot 402. Rotate the sealing bottle cap 4, and the upper inclined surface 4021 contacts and receives force with the lower inclined surface 3011, driving the sealing bottle cap 4 to move downward, so that the rubber sealing ring 5 is in close contact with the storage bottle body 3, effectively preventing the ozone gas inside the storage bottle body 3 from leaking. The shape memory alloy stent 1 is located in the ozone gas environment, achieving a sterilization effect; the spring 7 provides an elastic reset effect for the movable sleeve 6, and the limit guide block 303 is slidably matched with the movable hole 602, providing a guiding effect for the up and down movement of the movable sleeve 6; when the force-receiving block 301 moves to the innermost end of the L-shaped card slot 402, the positioning slot 403 rotates to directly above the positioning block 603, and the movable sleeve 6 moves upward along the limit guide block 303 under the influence of the spring 7 thrust, so that the positioning block 603 is inserted into the positioning slot 403, preventing the storage bottle body 3 from rotating in the reverse direction and ensuring the sealing effect of the shape memory alloy stent 1 inside the storage bottle body 3; during the storage process of the shape memory alloy stent 1 inside the storage bottle body 3, due to the elastic deformation of the elastic frame 404 itself, the relative ends of the shape memory alloy stent 1 are respectively in contact with the storage bottle body 3 and the elastic frame 404, providing a fixing effect for the shape memory alloy stent 1 and preventing the shape memory alloy stent 1 from moving inside the storage bottle body 3; when the shape memory alloy stent 1 needs to be used in surgery, move the movable sleeve 6 upward, the spring 7 is compressed, and the positioning block 603 is separated from the positioning slot 403. Then, the sealing bottle cap 4 can be rotated in the reverse direction to separate the sealing bottle cap 4 from the storage bottle body 3, and the shape memory alloy stent 1 inside can be taken out; when the shape memory alloy stent 1 is placed in the patient's airway, the soluble degradation film 102 is degraded by body fluid, and the inhibitory drug 2 slowly releases from the sustained-release micropores 101, continuously inhibiting granulation hyperplasia in the airway, effectively avoiding the occurrence of cough and dyspnea caused by granulation hyperplasia after stent implantation. The soluble degradation film 102 prevents the drug components inside the inhibitory drug 2 from reacting with ozone gas during the ozone gas storage process of the shape memory alloy stent 1, effectively ensuring the efficacy of the inhibitory drug 2.

[0042] In this article, the following points need attention:

[0043] 1. The drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures can refer to the general design.

[0044] 2. Without conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0045] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An airway stent, comprising: A memory metal bracket (1), a storage bottle body (3), a sealed bottle cap (4), a rubber sealing ring (5), a movable sleeve (6) and a spring (7); characterized in that the storage bottle body (3) contains ozone gas, the internal space of the storage bottle body (3) is annular, and the top of the storage bottle body (3) is buckled with a sealed bottle cap (4); the memory metal bracket (1) is located in the internal annular space of the storage bottle body (3); the sealing bottle cap (4) is installed with a rubber sealing ring (5), the storage bottle body (3) is sleeved with a movable sleeve (6), and the top of the movable sleeve (6) is connected to the sealed bottle cap (4); the movable sleeve (6) is connected to the inside of the spring (7), and the spring (7) is connected to the storage bottle body (3).

2. An airway stent according to claim 1, characterized in that: The memory metal of the memory metal stent (1) is hollow inside, the memory metal stent (1) is filled with inhibitory drugs (2), a sustained-release micropore (101) is arranged near the end of the memory metal stent (1), and a fusible degradation film (102) is covered near the end of the memory metal stent (1), and the fusible degradation film (102) is located outside the sustained-release micropore (101).

3. An airway stent according to claim 1, characterized in that: The sealing bottle cap (4) is provided with a sealing ring groove (401) inside, the rubber sealing ring (5) is located in the sealing ring groove (401) provided in the sealing bottle cap (4), the top of the storage bottle body (3) is inserted into the sealing ring groove (401), and the top of the storage bottle body (3) is in contact with the rubber sealing ring (5).

4. An airway stent according to claim 1, characterized in that: The sealed bottle cap (4) is provided with an L-shaped card slot (402) in a circumferential shape on the outside, and the storage bottle body (3) is provided with a force-bearing card block (301) near the outside of the top, and the force-bearing card block (301) is slidably connected to the L-shaped card slot (402) provided on the sealed bottle cap (4).

5. An airway stent according to claim 4, characterized in that: The bottom of the force-bearing clamping block (301) is provided with a lower inclined surface (3011), and the interior of the L-shaped clamping groove (402) is provided with an upper inclined surface (4021), and the upper inclined surface (4021) is in sliding contact with the lower inclined surface (3011).

6. An airway stent according to claim 1, characterized in that: The movable shell (6) is slidably connected to the inside of the storage bottle body (3); an inner guide column (302) is provided at the bottom of the storage bottle body (3); a through hole (601) is provided inside the movable shell (6); the inner guide column (302) slides through the through hole (601) provided in the movable shell (6); the spring (7) is sleeved outside the inner guide column (302); the top of the spring (7) contacts the movable shell (6); and the bottom of the spring (7) contacts the bottom end of the inner guide column (302).

7. An airway stent according to claim 1, characterized in that: The storage bottle body (3) is provided with a limiting guide block (303) in a surrounding shape on the outside, and the movable shell (6) is provided with a movable hole (602) in a surrounding shape on the outside. The limiting guide block (303) is slidably connected to the movable hole (602) provided on the movable shell (6).

8. An airway stent according to claim 1, characterized in that: The top of the movable casing (6) is provided with a positioning plug (603) in a surrounding shape, and the bottom of the sealed bottle cap (4) is provided with a positioning slot (403) in a surrounding shape. The positioning plug (603) is slidably inserted into the positioning slot (403) provided on the sealed bottle cap (4).

9. An airway stent according to claim 1, characterized in that: An elastic frame (404) is arranged at the bottom of the sealed bottle cap (4); the elastic frame (404) is located inside the storage bottle body (3); and the bottom of the elastic frame (404) contacts the end of the memory metal bracket (1).

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