Portable micro-grid expansion tool
The trachea and dilated stent in the portable micromesh expansion tool form a micromesh, and the bumps increase friction, solve the problem of the risk of easy shedding and overlapping of the traditional micromesh stent, and achieve stable positioning and long-term support of the stent in the blood vessels.
Patent Information
- Application Number
- CN202421763490.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-24
AI Technical Summary
Traditional micromesh stents are prone to fall off when sent to blood vessels and need to be overlapped to adapt to blood vessels of different thicknesses, increasing medical risks.
A portable micromesh expansion tool is designed, including a trachea, a dilated stent and a bump to form a micromesh through a trachea dilation, which increases friction to fix the stent and adapts to different blood vessel diameters through a gradient mesh structure.
Effectively prevent the micromesh stent from falling off, reduce medical risks, and avoid the risks caused by overlap through the gradient mesh structure, ensuring that the stent is stable in the blood vessels and providing long-term support.
Smart Images
Figure CN222899404U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical devices, in particular to a portable micro-mesh expansion tool. Background Art
[0002] The micro-mesh expansion stent, also known as a coronary stent, is a commonly used high-value consumable medical device that needs to be inserted into the heart for a long time and has a physiological mechanical function that conforms to the heartbeat of the heart. It has the functions of dredging arterial blood vessels, improving myocardial blood supply insufficiency caused by coronary heart disease, and blocking of the cardiac artery, and is crucial for heart surgery and the subsequent stability of the condition.
[0003] The traditional micro-mesh stent needs to use a balloon catheter to send the stent to the affected area. Because the surface of the balloon is coated with medicine and is relatively smooth, it is possible for the micro-mesh stent to fall off during the process of sending it to the affected area, resulting in medical failure. In order to adapt to blood vessels of different thicknesses at the affected area, the traditional micro-mesh stent often needs to be overlapped, but this will introduce more surgical risks.
[0004] For the above traditional micro-mesh stent, problems such as the micro-mesh stent falling off may occur. Therefore, we propose a portable micro-mesh expansion tool. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a portable micro-mesh expansion tool, aiming to improve problems such as the micro-mesh stent falling off.
[0006] It includes an air tube, one end of the air tube is fixedly connected to a valve, the other end of the air tube is fixedly connected with a head, the tail of the head is fixedly connected to one end of a stay bar, an expansion stent is arranged on the outer wall of the air tube near the head, convex blocks are fixedly connected to the surface of the expansion stent, the expansion stent is composed of connecting rods connected to each other, the expansion stent can form a micro-mesh through the expansion of the air tube, the diameter of the middle part of the expansion stent after expansion is smaller than that of both ends, the micro-mesh formed after the expansion of the expansion stent has a diamond-shaped mesh, and the mesh area at both ends is larger than that of the middle part. The transition area between the middle part and the end part of the micro-mesh formed after the expansion of the expansion stent is gradually tapered from the end part to form a connection. The overall outer contour of the micro-mesh formed by the expansion stent is wavy. The position of the air tube inside the micro-mesh formed by the expansion stent is a balloon, and the convex blocks can generate frictional force with the balloon.
[0007] Preferably, the outer surfaces of the head and the air tube are both coated with a lubricating liquid medicine.
[0008] Preferably, tiny penetration holes are opened at the ends of the convex blocks.
[0009] Preferably, the hardness of the material of the stay bar is greater than that of the material of the air tube.
[0010] Preferably, the end of the head is a rounded arc.
[0011] Preferably, a storage box is provided at the bottom of the trachea. A fixing block is provided inside the storage box, and an upper cover is fixedly connected to the side of the storage box.
[0012] Preferably, a sponge sheet and a moisture-proof packet are provided at the inner bottom of the storage box.
[0013] Preferably, both the upper cover and the storage box are made of transparent acrylic material.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, bumps are provided in the middle of each expansion bracket, which can increase the friction force to play a fixing role. And the micro-net formed by the expansion brackets forms a wavy shape after being expanded by the balloon near the end of the trachea. Therefore, the outer surface of the micro-net is no longer flat, which also plays a role in increasing the friction force. Through the above steps, the purpose of improving the medical risk caused by the detachment of the micro-net stent is achieved.
[0016] 2. In the utility model, the expansion brackets are connected to form a micro-net respectively, and the middle micro-net is denser and the mesh area is small. Therefore, it has better supporting force and is suitable for thin and fragile blood vessels. And the mesh area of the micro-net formed by connecting the two ends is larger and is suitable for blood vessels with a thicker diameter. The middle and the ends are connected by the gradually changing mesh at the connection part to form a whole, thus avoiding the increase of medical risk caused by the need to lap the micro-net stent to adapt to blood vessels of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a perspective view of the portable micro-net expansion tool proposed by the utility model;
[0018] Figure 2 is a structural diagram of the trachea of the portable micro-net expansion tool proposed by the utility model;
[0019] Figure 3 is a structural diagram of the expansion bracket of the portable micro-net expansion tool proposed by the utility model;
[0020] Figure 4 is a top view of the expansion bracket of the portable micro-net expansion tool proposed by the utility model.
[0021] Legend:
[0022] 1. Trachea; 2. Valve; 3. Expansion bracket; 4. End; 5. Brace; 6. Bump; 7. Fixing block; 8. Upper cover; 9. Storage box. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] Referring to Figures 1-4 , it includes an air tube 1. The air tube 1 serves to convey gas and accommodate the support bar 5 and the expansion stent 3. One end of the air tube 1 is fixedly connected to the valve 2, and the valve 2 serves to connect to an external gas source. The other end of the air tube 1 is fixedly connected with a head 4, and the head 4 serves as a guide. The tail of the head 4 is fixedly connected to one end of the support bar 5. The support bar 5 serves to support the air tube 1, enabling the air tube 1 to enter the blood vessel in a certain shape. An expansion stent 3 is provided on the outer wall of the air tube 1 near the head 4. The expansion stent 3 serves to expand the diameter of the blood vessel. A convex block 6 is fixedly connected to the surface of the expansion stent 3. The convex block 6 serves to increase the frictional force, making the fit with the air tube 1 closer during the feeding process and not easily falling off. After the feeding is completed, it can rely on the convex block 6 to not be easily washed away by the blood in the blood vessel and thus lose the support effect. The expansion stent 3 is composed of connecting rods connected to each other to form an integral body with higher strength. The expansion stent 3 can form a micro-net through the expansion of the air tube 1, which can expand the blood vessel, thereby making the blood flow smoother. The diameter of the middle part of the expansion stent 3 after expansion is smaller than that of both ends. The micro-net formed after the expansion of the expansion stent 3 has a diamond-shaped mesh, and the mesh area at both ends is larger than that in the middle. The transition area between the middle part and the end part of the micro-net formed after the expansion of the expansion stent 3 is tapered from the end part to form a connection. The larger mesh has low strength and is suitable for parts with a larger blood vessel diameter, while the parts with a smaller diameter are connected more tightly. Therefore, the mesh appears relatively tight and has relatively high strength, which is suitable for thinner blood vessels or blood vessel bends. The connection through the tapered part makes the entire expansion stent 3 form an integral body, avoiding the overlap of stents with different requirements. The overall outer contour of the micro-net formed by the expansion stent 3 is wavy. Due to the wavy outer contour, it can increase the contact area between the expansion stent 3 and the blood vessel, can more reliably support the blood vessel wall, and can be reliably stabilized at the target position in the blood vessel. Moreover, the wavy outer shape helps to improve the conductivity of the expansion stent 3 in the blood vessel and the flexibility when passing through curved blood vessels. The position of the air tube 1 inside the micro-net formed by the expansion stent 3 is a balloon. The balloon can expand the originally contracted expansion stent 3. The convex block 6 can generate frictional force with the balloon, and the frictional force can prevent the convex block 6 from falling off easily during feeding. The micro-net formed by the expansion of the expansion stent 3 will not rebound and shrink, achieving the purpose of long-term support.
[0025] The outer surfaces of the end head 4 and the trachea 1 are both coated with a lubricating liquid medicine, and the lubricating liquid medicine plays a role in making the conveying process smoother.
[0026] The end of the convex block 6 is provided with tiny penetration holes. The treatment medicine can be placed inside the convex block 6, and the medicine penetrates outward through the penetration holes for continuous treatment.
[0027] The material hardness of the support bar 5 is greater than that of the trachea 1, so that the trachea 1 will not be bent, retracted and blocked due to being too soft during the medicine delivery process.
[0028] The end of the end head 4 is a rounded arc, and the rounded arc can reduce the resistance of the blood to the end head 4, making the feeding process smoother.
[0029] A storage box 9 is arranged at the bottom of the trachea 1. The storage box 9 can store the micro-mesh dilation tool. A fixing block 7 is arranged inside the storage box 9, and the fixing block 7 can fix the micro-mesh dilation tool. The side of the storage box 9 is fixedly connected with an upper cover 8, and the upper cover 8 can prevent dust from entering and can be better preserved.
[0030] A sponge sheet and a moisture-proof bag are arranged at the inner bottom of the storage box 9. The sponge sheet can better protect the internal micro-mesh dilation tool when the storage box 9 drops and collides, and the moisture-proof bag can make the inside of the whole storage box 9 drier, so as to be stored for a longer time.
[0031] Both the upper cover 8 and the storage box 9 are made of transparent acrylic material, which can more intuitively observe the situation inside the storage box 9, and the acrylic material has a certain strength, which is more convenient to carry.
[0032] Working principle: When in use, open the upper cover 8, remove the fixing block 7, send the end head 4 from the blood vessel opening, cooperate with the X-ray observation device to guide the end head 4 by using the support bar 5, increase the friction between the dilation stent 3 and the trachea 1 through the convex block 6, and it is not easy to fall off during the feeding process. When the dilation stent 3 reaches the treatment site, connect the air inlet 2 to the air supply device to inflate the inside of the trachea 1. Then the balloon at the bottom of the dilation stent 3 starts to expand, and finally the dilation stent 3 is expanded into a cylindrical mesh shape, so that the dilation stent 3 remains at the affected area, and the dilation stent 3 can be firmly fixed at the affected area for long-term support through the convex block 6. At the same time, the tiny holes at the end of the convex block 6 also start to seep out the liquid medicine to treat the affected area. After the dilation is completed, remove the air inlet 2 from the air supply device, then the balloon shrinks, and then the trachea 1 is withdrawn to complete the operation.
[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A portable micro-net expansion tool comprising a trachea (1), characterized in that One end of the trachea (1) is fixedly connected to the valve (2), the other end of the trachea (1) is fixedly connected to an end head (4), the tail of the end head (4) is fixedly connected to one end of a strut (5), an expansion bracket (3) is arranged on the outer wall of one end of the trachea (1) close to the end head (4), a bump (6) is fixedly connected to the surface of the expansion bracket (3), the expansion bracket (3) is composed of connecting rods connected to each other, the expansion bracket (3) can be expanded through the trachea (1) to form a micro-net, the After the expansion stent (3) is expanded, the diameter of the middle part is smaller than the diameter of the two ends. The micro-net of the expansion stent (3) after expansion is a diamond mesh, and the mesh area at the two ends is larger than the mesh area in the middle part. The transition area between the middle part and the end of the micro-net after expansion of the expansion stent (3) is connected by the gradual contraction of the end. The outer peripheral contour of the micro-net formed by the expansion stent (3) is wavy as a whole. The position of the internal trachea (1) of the micro-net formed by the expansion stent (3) is a balloon, and the protrusion (6) can generate friction force with the balloon.
2. The portable microgrid expansion tool according to claim 1, characterized in that The surfaces of the end head (4) and the trachea (1) are both coated with lubricating liquid.
3. The portable microgrid expansion tool according to claim 1, characterized in that A tiny penetration hole is provided at the end of the protrusion (6).
4. The portable microgrid expansion tool according to claim 1, characterized in that The material hardness of the support bar (5) is greater than the material hardness of the trachea (1).
5. The portable microgrid expansion tool according to claim 1, characterized in that The end of the terminal (4) is in a rounded arc shape.
6. The portable microgrid expansion tool according to claim 1, characterized in that A storage box (9) is arranged at the bottom of the air pipe (1), a fixing block (7) is arranged inside the storage box (9), and an upper cover (8) is fixedly connected to the side of the storage box (9).
7. The portable microgrid expansion tool according to claim 6, characterized in that The inner bottom of the storage box (9) is provided with a sponge sheet and a moisture-proof bag.
8. The portable microgrid expansion tool according to claim 6, characterized in that The upper cover (8) and the storage box (9) are both made of transparent acrylic material.