Interventional puncture device for neurology clinic

Abstract

The utility model discloses an intervention puncture ware for clinical neurology, including needle cylinder, one end fixed connection of needle cylinder has outer thread head, the outer thread head is threadedly connected with the inner thread head, the inner thread head is fixedly connected with puncture needle away from needle cylinder one end, the needle cylinder inner chamber sliding connection has the piston, the back middle part fixed connection of piston has the movable rod, the end of movable rod extends to the outside of needle cylinder, and the inner chamber of movable rod is provided with the screw cavity, the screw cavity is threadedly connected with the outer thread rod. The utility model discloses through the cooperation between outer thread rod, needle bar and movable rod and piston, makes when puncture guide wire, does not need to take down needle cylinder from needle, greatly improves puncture efficiency, makes the operation more simple and convenient, reduces the occurrence of dangerous phenomenon in the puncture process, safe and reliable, and the practicality is strong.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an interventional puncture device for clinical use in neurology. Background Technology

[0002] Neurointerventional therapy refers to minimally invasive interventional treatment of intracranial vascular lesions, performed through vascular puncture, to relieve symptoms and control disease progression, such as intracranial aneurysms and arteriovenous malformations. Neurointerventional therapy is a commonly used minimally invasive treatment method. When intracranial vascular lesions are present, a puncture can be made in the femoral artery, and a special catheter can be inserted into the blood vessel. The catheter is then extended directly to the location of the intracranial vascular lesion, and coils are then inserted through the catheter to the lesion site, thereby achieving the goal of treating the disease.

[0003] Currently, when performing interventional cerebrovascular treatment, doctors typically insert a puncture needle directly into the patient's blood vessel, then remove the syringe from the needle and insert a guidewire through the needle tip into the vessel. This procedure easily causes blood to spill out, contaminating the doctor's work surface, increasing the risk of cross-infection, and significantly hindering the surgeon's work. A sealing diaphragm is usually installed to prevent blood spillage. The guidewire is then used to puncture the sealing diaphragm and enter the blood vessel. However, because the guidewire is thin, it is difficult to pass through the sealing diaphragm. Some interventional cerebrovascular devices use a perforation tube inside the needle tube. However, when inserting the needle into the blood vessel, the piston may not be fully pushed, leaving air in the needle tube. Pushing the piston to puncture the sealing diaphragm can cause this air to enter the patient's blood vessel, potentially leading to myocardial infarction or even death. Utility Model Content

[0004] The purpose of this invention is to provide an interventional puncture device for clinical use in neurology, in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: An interventional puncture device for clinical use in neurology includes a syringe. One end of the syringe is fixedly connected to an external threaded head, and an internal threaded head is threadedly connected to the external threaded head. A puncture needle is fixedly connected to the end of the internal threaded head away from the syringe. A piston is slidably connected to the inner cavity of the syringe. A movable rod is fixedly connected to the middle part of the back of the piston. The end of the movable rod extends to the outside of the syringe. The inner cavity of the movable rod is provided with a threaded cavity. An external threaded rod is threadedly connected to the threaded cavity. A needle rod is provided at one end of the external threaded rod, and a push plate is provided at the other end. A limit component is provided between the push plate and the movable rod.

[0006] Preferably, a retaining ring is fixedly connected to the outer side of the end of the syringe away from the external thread head.

[0007] Preferably, the syringe is made of a transparent material.

[0008] Preferably, a guide wire hole is formed between the middle part of the surface of the push plate and the inner cavity of the external thread rod, the inner cavity of the needle rod, the inner cavity of the external thread head, the inner cavity of the internal thread head, and the inner cavity of the puncture needle.

[0009] Preferably, the diameter of the needle bar is smaller than the diameter of the external thread bar, and the diameter of the external thread bar matches the diameter of the thread cavity.

[0010] Preferably, the limiting component includes a connecting block, a sealing plug is provided at the middle of one side of the connecting block, limiting rods are provided on both sides of the sealing plug, limiting holes corresponding to the limiting rods are provided on both sides of the movable rod away from the piston, and two insertion holes corresponding to the limiting holes are provided on the surface of the push plate, the diameter of the limiting rod is equal to the diameter of the insertion hole and the diameter of the limiting hole, and the diameter of the sealing plug matches the diameter of the guide wire hole.

[0011] The interventional puncture device of this invention for use in neurological clinical practice has the following advantages:

[0012] 1. This utility model, through the cooperation between the external threaded rod, the needle rod, the movable rod, and the piston, eliminates the need to remove the syringe from the needle tip when puncturing the guide wire, greatly improving puncture efficiency, making the operation simpler and more convenient, reducing the occurrence of dangerous phenomena during puncture, and ensuring safety, reliability, and strong practicality.

[0013] 2. This utility model achieves needle rod insertion into piston through a threaded method, which is more labor-saving, convenient to operate, and easy to control. Under the action of the limiting component, it can effectively prevent the phenomenon of needle rod penetrating piston due to accidental contact, thus ensuring the safety and reliability of the structure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the syringe and the movable rod in this utility model;

[0017] Figure 3This is an exploded view of the movable rod and needle rod in this utility model.

[0018] The markings in the diagram are as follows: 1. Syringe; 2. External threaded head; 3. Internal threaded head; 4. Puncture needle; 5. Retaining ring; 6. Push plate; 7. Piston; 8. Movable rod; 9. Limiting assembly; 10. Needle bar; 11. External threaded rod; 12. Threaded cavity; 13. Limiting hole; 14. Guide wire hole; 15. Insertion hole; 16. Limiting rod; 17. Sealing plug; 18. Connecting block. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0024] To better understand the purpose, structure, and function of this utility model, the following detailed description of an interventional puncture device for clinical use in neurology, in conjunction with the accompanying drawings, is provided.

[0025] like Figure 1-3 As shown, this utility model discloses an interventional puncture device for clinical use in neurology, comprising a syringe 1 made of transparent material. One end of the syringe 1 is fixedly connected to an externally threaded head 2. A retaining ring 5 is fixedly connected to the outer side of the end of the syringe 1 away from the externally threaded head 2. An internally threaded head 3 is threaded onto the externally threaded head 2. A puncture needle 4 is fixedly connected to the end of the internally threaded head 3 away from the syringe 1. A piston 7 is slidably connected to the inner cavity of the syringe 1. A movable rod 8 is fixedly connected to the middle of the back of the piston 7. The end of the movable rod 8 extends to the outer side of the syringe 1, and the inner cavity of the movable rod 8 is provided with a threaded cavity 12, with an externally threaded connection to the internal thread of the threaded cavity 12. The rod 11 has a needle bar 10 at one end and a push plate 6 at the other end. The diameter of the needle bar 10 is smaller than the diameter of the external thread rod 11. The diameter of the external thread rod 11 matches the diameter of the threaded cavity 12. A guide wire hole 14 is formed between the middle part of the surface of the push plate 6 and the inner cavity of the external thread rod 11, the inner cavity of the needle bar 10, the inner cavity of the external thread head 2, the inner cavity of the internal thread head 3, and the inner cavity of the puncture needle 4. The guide wire can directly pass through the push plate 6, the external thread rod 11, the needle bar 10, the piston 7, the external thread head 2, the internal thread head 3, and the puncture needle 4 into the blood vessel to complete the puncture without removing the syringe, allowing for rapid puncture.

[0026] A limiting component 9 is provided between the push plate 6 and the movable rod 8. The limiting component 9 includes a connecting block 18. A sealing plug 17 is provided in the middle of one side of the connecting block 18. Limiting rods 16 are provided on both sides of the sealing plug 17. Limiting holes 13 corresponding to the limiting rods 16 are provided on both sides of the movable rod 8 away from the piston 7. Two insertion holes 15 corresponding to the limiting holes 13 are provided on the surface of the push plate 6. The diameter of the limiting rod 16 is equal to the diameter of the insertion hole 15 and the diameter of the limiting hole 13. The diameter of the sealing plug 17 is equal to the diameter of the guide wire hole 1. The diameter of 4 matches. To facilitate the removal of the limiting component 9, a pull ring is provided on the surface of the connecting block 18. In the initial state, the piston 7 is at the innermost part of the syringe 1 and in contact with its end inner wall. At this time, the needle tip of the needle rod 10 is in contact with the surface of the piston 7. The limiting rod 16 is inserted into the limiting hole 13 through the insertion hole 15. The sealing plug 17 is in the guide wire hole 14. The surface of the connecting block 18 is in contact with the surface of the push plate 6. At this time, the push plate 6, the external thread rod 11, the needle rod 10, the movable rod 8, and the piston 7 are a whole. Moving the push plate 6 can make the external thread rod 11, the needle rod 10, the movable rod 8, and the piston 7 a whole. The threaded rod 11, needle rod 10, movable rod 8, and piston 7 move simultaneously. In use, the puncture needle 4 is inserted into a blood vessel. Moving the push plate 6 outward causes the piston 7 to move outward, creating negative pressure to draw out blood. Alternatively, the puncture needle 4 can be drawn into medication. Moving the push plate 6 expels residual air from the syringe 1, allowing the puncture needle 4 to be inserted into a blood vessel, and the medication to be injected. Then, the connecting block 18 is pulled to remove the limiting component 9 from the push plate 6. Rotating the push plate 6 clockwise causes the external threaded rod 11 and needle rod 10 to rotate. Under the action of the thread, the external thread rod 11 drives the needle rod 10 to move inward, so that the needle tip of the needle rod 10 penetrates the piston 7, thereby forming a guide wire hole 14 between the push plate 6 and the external thread rod 11, needle rod 10, piston 7, external thread head 2, internal thread head 3 and puncture needle 4. The guide wire passes through the push plate 6 in sequence through the external thread rod 11, needle rod 10, piston 7, external thread head 2, internal thread head 3 and puncture needle 4, and finally enters the human blood vessel through the puncture needle 4 to complete the puncture. There is no need to remove the syringe 1 for rapid puncture.

[0027] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An interventional puncture device for clinical use in neurology, characterized in that: The syringe includes a syringe (1), one end of which is fixedly connected to an external threaded head (2), and an internal threaded head (3) is threaded onto the external threaded head (2). A puncture needle (4) is fixedly connected to the end of the internal threaded head (3) away from the syringe (1). A piston (7) is slidably connected to the inner cavity of the syringe (1). A movable rod (8) is fixedly connected to the middle part of the back of the piston (7). The end of the movable rod (8) extends to the outside of the syringe (1), and a threaded cavity (12) is provided in the inner cavity of the movable rod (8). An external threaded rod (11) is threaded into the threaded cavity (12). A needle rod (10) is provided at one end of the external threaded rod (11), and a push plate (6) is provided at the other end. A limit assembly (9) is provided between the push plate (6) and the movable rod (8).

2. The interventional puncture device for clinical neurology according to claim 1, characterized in that: A retaining ring (5) is fixedly connected to the outer side of the end of the syringe (1) away from the external thread head (2).

3. The interventional puncture device for clinical neurology according to claim 1, characterized in that: The syringe (1) is made of a transparent material.

4. The interventional puncture device for clinical neurology according to claim 1, characterized in that: A guide wire hole (14) is formed between the middle part of the surface of the push plate (6) and the inner cavity of the external thread rod (11), the inner cavity of the needle rod (10), the inner cavity of the external thread head (2), the inner cavity of the internal thread head (3), and the inner cavity of the puncture needle (4).

5. The interventional puncture device for clinical neurology according to claim 1, characterized in that: The diameter of the needle bar (10) is smaller than the diameter of the external threaded rod (11), and the diameter of the external threaded rod (11) matches the diameter of the threaded cavity (12).

6. The interventional puncture device for clinical neurology according to claim 1, characterized in that: The limiting component (9) includes a connecting block (18). A sealing plug (17) is provided in the middle of one side of the connecting block (18). Limiting rods (16) are provided on both sides of the sealing plug (17). Limiting holes (13) corresponding to the limiting rods (16) are provided on both sides of the movable rod (8) away from the piston (7). Two insertion holes (15) corresponding to the limiting holes (13) are provided on the surface of the push plate (6). The diameter of the limiting rod (16) is equal to the diameter of the insertion hole (15) and the diameter of the limiting hole (13). The diameter of the sealing plug (17) matches the diameter of the guide wire hole (14).

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