Thread bolt for brain embolism experiment

Abstract

The utility model relates to the technical field of cerebral embolism models, in particular to a suppository for cerebral embolism experiments, which comprises a catheter. The two sets of steering mechanisms are movably installed in the guide pipe and used for adjusting the orientation of the end of the guide pipe. The moving structure is movably mounted in the middle of the interior of the catheter, and the moving structure is used for blocking a blood vessel with the embolism; and the injection molding assembly is movably mounted at the upper end of the outer wall of the catheter and is used for filling the embolism. The utility model discloses. A corrugated pipe is installed on the lower side of the outer wall of the fixing block, so that the fixing block has certain rotating capacity, rotation is controlled through a first connecting line and a second connecting line which are fixedly connected to the lower side of the outer wall of the fixing block, two caps connected to the outer wall of the fixing block in a sleeving mode are matched with each other, and a user can manufacture blockages by means of wax blocks by himself / herself, so that the use cost is reduced; and through the cooperation of the guide pipe and the push rod, the wire bolt can be quickly moved to a target position to release the blocking object.

Description

Technical Field

[0001] This utility model relates to the field of cerebral embolism model technology, specifically a suture for cerebral embolism experiments. Background Technology

[0002] Cerebral embolism occurs when various emboli (such as mural thrombi in the heart, atherosclerotic plaques, fat, tumor cells, fibrocartilage, or air) travel through the bloodstream into a cerebral artery and block the vessel. When collateral circulation cannot compensate, it causes ischemic necrosis of brain tissue in the area supplied by that artery, resulting in focal neurological deficits. Cerebral embolism commonly occurs in the internal carotid artery system, while it is relatively rare in the vertebrobasilar artery system. Cerebral embolism accounts for approximately 15% to 20% of ischemic strokes.

[0003] In current animal experiments for drug treatment of ischemic stroke, rodents are commonly used as experimental subjects. Before the experiment, a model is typically created by blocking a blood vessel in the brain with a foreign object, causing localized cerebral ischemia in rats or mice. However, due to the complex branching of blood vessels, existing sutures often cannot be redirected during puncture and movement. Furthermore, the occluder is usually a disposable consumable, resulting in high usage costs. Therefore, we propose a suture for cerebral embolization experiments to address these problems. Utility Model Content

[0004] The purpose of this invention is to provide a suture plug for cerebral embolism experiments, in order to solve the problems mentioned in the background art, such as the fact that when making models, due to the complexity of vascular branches, existing suture plugs are mostly unable to turn during puncture and movement, and the occluder is usually a disposable consumable, resulting in high usage costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a suture embolism experimental device for cerebral embolism, comprising a catheter;

[0006] A steering mechanism, comprising two sets of movably mounted inside the conduit, is used to adjust the orientation of the conduit tip;

[0007] A movable structure is movably installed in the middle position inside the catheter, and the movable structure is used to block the blood vessel with an embolism;

[0008] The injection molding assembly is movably mounted on the upper end of the outer wall of the catheter and is used for injecting embolization.

[0009] Preferably, the steering mechanism includes a bellows, which is fixedly installed at the upper end of the outer wall of the conduit. A fixing block is fixedly connected to the upper end of the outer wall of the bellows, and a first connecting line and a second connecting line are fixedly connected to the lower end of the outer wall of the fixing block. The first connecting line and the second connecting line are movably installed inside the conduit. A second sliding groove for the first connecting line to move and a third sliding groove for the second connecting line to move are provided inside the conduit.

[0010] Preferably, the movable structure includes a push rod, which is movably installed in a first groove located in the middle of the inner wall of the conduit, and an embolus is movably installed on the upper end of the outer wall of the push rod.

[0011] Preferably, the injection molding assembly includes a cap, two sets of caps are symmetrically arranged, and the outer walls of the two sets of caps are hinged together on one side. The lower end of the outer wall of each cap is provided with a slot. An injection groove is provided inside the cap, and the inner wall of the injection groove is adapted to the plug. Six sets of locking components are installed on the other side of the cap.

[0012] Preferably, the locking assembly includes positioning blocks, the rear ends of the outer walls of the positioning blocks are fixedly connected to a set of caps, and each positioning block has a set of conical slots. The outer walls of another set of caps have positioning holes that are adapted to the positioning blocks, and the bottom of the inner wall of the positioning hole is fixedly connected to a conical block that is adapted to the front end of the positioning block.

[0013] Preferably, the front end of the outer wall of the fixing block is rounded and smooth without sharp edges, and the corrugated pipe and the fixing block are provided with a sliding groove for the movement of the plug.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model has a certain rotational ability by installing a corrugated pipe on the lower side of the outer wall of the fixed block, and controls the rotation by the first and second connecting lines fixedly connected to the lower side of the outer wall of the fixed block. The two sets of caps sleeved on the outer wall of the fixed block cooperate with each other, allowing users to make their own blockage with wax blocks to reduce the cost of use. The cooperation of the conduit and the push rod enables the wire plug to be quickly moved to the target position to release the blockage. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0018] Figure 3 This utility model Figure 2 A magnified view of part A in the diagram;

[0019] Figure 4 This is a schematic diagram of the injection molding component of this utility model.

[0020] In the diagram: 1. Conduit; 2. First groove; 3. Second groove; 4. Third groove; 5. Push rod; 6. First connecting line; 7. Second connecting line; 8. Plug; 9. Bellows; 10. Fixing block; 11. Cap; 12. Empty groove; 13. Injection groove; 14. Positioning block; 15. Positioning hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 One embodiment of this utility model is a suture for cerebral embolism experiments, comprising a catheter 1;

[0023] The steering mechanism has two sets of components that are movably installed inside the conduit 1, and the steering mechanism is used to adjust the orientation of the end of the conduit 1.

[0024] The movable structure is movably installed in the middle position inside the catheter 1, and the movable structure is used to block the blood vessel with an embolism.

[0025] The injection molding assembly is movably mounted on the upper end of the outer wall of the catheter 1 and is used for injecting the embolization plug. This device enables the self-manufacturing of the embolus 8 through the injection molding mechanism, reducing usage costs. The steering mechanism allows for free adjustment of the steering angle, and the moving structure allows for placement of the embolus 8 into a predetermined position.

[0026] Furthermore, the steering mechanism includes a bellows 9, which is fixedly installed at the upper end of the outer wall of the catheter 1. A fixing block 10 is fixedly connected to the upper end of the outer wall of the bellows 9, and a first connecting line 6 and a second connecting line 7 are fixedly connected to the lower end of the outer wall of the fixing block 10. The first connecting line 6 and the second connecting line 7 are movably installed inside the catheter 1. A second sliding groove 3 for the first connecting line 6 to move and a third sliding groove 4 for the second connecting line 7 to move are provided inside the catheter 1. This structure, by setting the bellows 9 and the fixing block 10 installed at its upper end, and by pulling the first connecting line 6 or the second connecting line 7 connected to the fixing block 10, allows for corresponding rotation, facilitating the movement of the catheter 1 within the blood vessel.

[0027] Furthermore, the movable structure includes a push rod 5, which is movably mounted within a first groove 2. The first groove 2 is located in the middle of the inner wall of the conduit 1, and an embolus 8 is movably mounted on the upper outer wall of the push rod 5. This structure, by creating the first groove 2 and using the push rod 5 installed inside it, allows the embolus 8 to be quickly moved out of the first groove 2 and placed in the target position.

[0028] Furthermore, the injection molding assembly includes caps 11, with two sets of caps 11 symmetrically arranged, and the outer walls of the two sets of caps 11 are hinged together on one side. A slot 12 is formed at the lower end of the outer wall of each cap 11, and an injection groove 13 is formed inside the cap 11. The inner wall of the injection groove 13 is adapted to the plug 8. Six sets of locking components are installed on the other side of the cap 11. This structure, through the two sets of caps 11, the slots 12, and the injection grooves 13, enables the self-heating of the wax block to inject the plug 8, reducing usage costs and making it inexpensive.

[0029] Furthermore, the locking assembly includes positioning blocks 14, the rear ends of the outer walls of which are fixedly connected to a set of caps 11. Each positioning block 14 has a set of tapered slots. The outer walls of the other set of caps 11 have positioning holes 15 that are adapted to the positioning blocks 14. The bottom of the inner wall of the positioning hole 15 is fixedly connected to a tapered block that is adapted to the front end of the positioning block 14. This structure, by setting positioning blocks 14 and opening positioning holes 15 that are adapted to the other set of caps 11, can tightly connect the two sets of caps 11 together.

[0030] Furthermore, the outer front end of the fixing block 10 is rounded and smooth without any sharp edges, and grooves for the movement of the embolic material 8 are provided inside the bellows 9 and the fixing block 10. This structure, by making the end of the fixing block 10 rounded, ensures that the edge of the fixing block 10 will not scratch the blood vessel when the catheter 1 is moved.

[0031] Working principle: When using, first hold the two sets of caps 11 installed at the top and pull them up so that the slots 12 on the lower side of the outer wall of the caps 11 are completely separated from the outer wall of the fixing block 10. Then rotate the two sets of caps 11 so that the openings of the slots 12 face upwards and ensure that the two sets of caps 11 are tightly fitted. Then heat the wax block and inject the hot wax into the injection molded tank 13 through the slots 12 and tamp it down. After cooling, open it along one side of the cap 11 so that the positioning block 14 is completely separated from the inner wall of the positioning hole 15. Take out the wax block and place it in the first sliding groove 2. Hold the push rod 5 and move it forward to move the wax block to the end of the guide tube 1.

[0032] The experimental subject was then dissected at a certain distance from the pre-set target blood vessel. The fixing block 10 was inserted along the opening, and the catheter 1 was moved inward. When a branch blood vessel was encountered, the first connecting line 6 or the second connecting line 7 on the corresponding side could be pulled, causing the end fixing block 10 to bend the corrugated tube 9 due to the tension and change direction at a certain angle. When the first connecting line 6 or the second connecting line 7 was released, the corrugated tube 9 returned to its original shape due to its own elasticity.

[0033] Once the target position is reached, push the push rod 5 inward along the second slide 3 and squeeze the embolism 8 stored at the end out of the fixing block 10, place it in the target blood vessel and wrap it to block the blood flow. Then pull the first slide 2 backward to completely detach it from the blood vessel, and then suture the blood vessel and wound.

[0034] In the description of this application, it should be understood that the terms "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A suture embolism experimental device for cerebral embolism, comprising a catheter (1), characterized in that... ； A steering mechanism is provided, which has two sets of movably installed inside the conduit (1), and the steering mechanism is used to adjust the orientation of the end of the conduit (1); A movable structure is movably installed in the middle of the catheter (1) and is used to block the blood vessel with an embolism; The injection molding assembly is movably mounted on the upper end of the outer wall of the conduit (1) and is used for injecting embolization.

2. The suture occlusion experimental device for cerebral embolism according to claim 1, characterized in that: The steering mechanism includes a bellows (9), which is fixedly installed at the upper end of the outer wall of the conduit (1). A fixing block (10) is fixedly connected to the upper end of the outer wall of the bellows (9). A first connecting line (6) and a second connecting line (7) are fixedly connected to the lower end of the outer wall of the fixing block (10). The first connecting line (6) and the second connecting line (7) are movably installed inside the conduit (1). A second sliding groove (3) for the first connecting line (6) to move and a third sliding groove (4) for the second connecting line (7) to move are provided inside the conduit (1).

3. The suture embolism experimental device according to claim 1, characterized in that: The movable structure includes a push rod (5), which is movably installed in a first groove (2). The first groove (2) is located in the middle of the inner wall of the conduit (1). An embolus (8) is movably installed on the upper end of the outer wall of the push rod (5).

4. The suture occlusion experimental device for cerebral embolism according to claim 1, characterized in that: The injection molding assembly includes a cap (11), two sets of caps (11) are symmetrically arranged, and the outer walls of the two sets of caps (11) are hinged together on one side. The lower end of the outer wall of each cap (11) is provided with a slot (12). An injection groove (13) is provided inside the cap (11), and the inner wall of the injection groove (13) is adapted to the plug (8). Six sets of locking assemblies are installed on the other side of the cap (11).

5. The suture embolism experimental device according to claim 4, characterized in that: The locking assembly includes a positioning block (14), the rear end of the outer wall of the positioning block (14) is fixedly connected to a set of caps (11), and a set of conical slots are opened on the positioning block (14). The outer wall of another set of caps (11) is provided with positioning holes (15) that are adapted to the positioning block (14). The bottom of the inner wall of the positioning hole (15) is fixedly connected with a conical block that is adapted to the front end of the positioning block (14).

6. The suture occlusion experimental device for cerebral embolism according to claim 2, characterized in that: The outer wall of the fixing block (10) is set to be arc-shaped and smooth without sharp edges, and the corrugated pipe (9) and the fixing block (10) are provided with a sliding groove for the movement of the plug (8).

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