A medical puncture device

Abstract

This application relates to a medical puncture device, belonging to the technical field of medical devices. It includes a puncture cone, a puncture cannula, and an injection valve. The puncture cannula includes a main body and a cannula base disposed at the end of the main body. The cannula base is fitted with a cannula cap, a sealing base, and a sealing cap sequentially from bottom to top. A cross-shaped open elastic silicone ring is disposed at the center of the bottom of the sealing base. This application achieves excellent sealing performance through the cross-shaped open elastic silicone ring; the rubber pad and buffer block ensure stability of the assembled device; and the elastic buckle at the top of the connecting post simplifies assembly.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to a medical puncture device. Background Technology

[0002] A puncture device is a medical device used for puncture sampling or injection. It is used for puncture procedures, including obtaining biological tissue or body fluid samples from the body surface or inside organs for disease diagnosis and treatment. It mainly consists of a puncture cone and a puncture cannula. Puncture devices have a wide range of applications, including clinical medicine, pathology, and imaging.

[0003] Disposable trocars need to prevent gas leakage and seal failure during surgery. Currently, the trocar's puncture cone causes gas leakage when passing through the puncture cannula, so there is an urgent need to develop a trocar with good sealing performance. Utility Model Content

[0004] To address the aforementioned issues, this application provides a medical puncture device.

[0005] The puncture device provided in this application adopts the following technical solution: A medical puncture device includes a puncture cone, a puncture cannula, and an air injection valve. The puncture cannula includes a puncture cannula body and a cannula base disposed at the end of the puncture cannula body. The cannula base is provided with a cannula cap, a sealing base, and a sealing cap in sequence from bottom to top. A cross-shaped open elastic silicone ring is disposed at the center of the bottom of the sealing base.

[0006] By adopting the above technical solution, when the puncture cone passes through the puncture cannula, after passing through the cross-shaped opening elastic silicone ring, the cross-shaped opening elastic silicone ring is tightly attached to the surface of the puncture cone, resulting in good sealing.

[0007] Preferably, the sleeve base is provided with a connecting post along the circumference, and the sleeve cover is provided with a sleeve cover opening along the circumference corresponding to the connecting post. The sleeve cover is connected to the sleeve base through the connecting post.

[0008] Preferably, the top of the connecting column is provided with an elastic buckle, and after the sleeve cover is pressed over the elastic buckle, the elastic buckle fixes the sleeve cover.

[0009] By adopting the above technical solution, when assembling the trocar of this application, it is only necessary to press the cannula cap into the cannula base, which is simple to assemble. The cannula cap can be firmly fixed by the elastic buckle and is not easy to fall off.

[0010] Preferably, a rubber pad is provided between the sleeve base and the sleeve cover, and the rubber pad has openings along its circumference corresponding to the connecting column.

[0011] Preferably, the sealing base and the sleeve base are connected by a snap-fit, and a buffer block is provided along the circumference of the bottom lower end face of the sealing base. The bottom of the buffer block abuts against the sleeve cover, and the buffer block is a spring sheet.

[0012] By adopting the above technical solution, setting rubber pads and buffer blocks can make the assembled device stable.

[0013] Preferably, the upper end face of the sealing base and the lower end face of the sealing cap are corresponding threaded caps.

[0014] Preferably, the upper surface of the sealing cap is provided with a groove, the puncture cone is provided with a puncture cone sealing cap away from the tip of the puncture cone, the bottom of the puncture cone sealing cap is provided with a buckle, the puncture cone passes through the sealing cap from the tip, and is connected to the groove on the upper surface of the sealing cap and the sealing cap through the buckle at the bottom of the puncture cone sealing cap.

[0015] By adopting the above technical solution, on the one hand, the puncture cone can be completely fixed after passing through the puncture cannula, and on the other hand, the inside of the puncture device is sealed.

[0016] Preferably, the puncture cannula body is provided with a gripping structure near the cannula base, and the surface of the gripping structure is threaded.

[0017] By adopting the above technical solution, the grip structure makes the puncture device of this application easy to operate and reduces the risk of hand injury.

[0018] In summary, this application includes at least one of the following beneficial technical effects: 1. The cross-shaped opening elastic silicone ring provides excellent sealing for the puncture device of this application; 2. The rubber pads and buffer blocks help stabilize the assembled device; 3. By setting an elastic buckle at the top of the connecting column, the medical puncture device of this application is easy to assemble. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the overall structure of the puncture device in the embodiments of this application.

[0020] Figure 2 This is an exploded schematic diagram used in the embodiments of this application to illustrate the internal structure of the puncture device.

[0021] Figure 3 This is a cross-sectional schematic diagram used to illustrate the puncture device in the embodiments of this application.

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0023] Explanation of reference numerals in the attached drawings: 1. Puncture cone; 11. Puncture cone sealing cap; 111. Snap fastener; 2. Puncture cannula; 21. Puncture cannula body; 211. Grip structure; 2111. Thread; 212. Friction-enhancing thread; 213. Cannula base; 22. Connecting post; 221. Elastic snap fastener; 23. Rubber pad; 231. Rubber pad opening; 24. Cannula cap; 241. Cannula cap opening; 25. Sealing base; 251. Buffer block; 252. Cross-shaped opening elastic silicone ring; 26. Sealing cap; 261. Slot; 3. Inflation valve. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0025] This application discloses a medical puncture device, as described in the embodiments below. Figure 1-2 ,include.

[0026] A medical puncture device includes a puncture cone 1, a puncture cannula 2, and an air injection valve. The puncture cannula 2 includes a puncture cannula 2 body and a cannula base 213 disposed at the end of the puncture cannula 2 body. The cannula base 213 is provided with a cannula cap 24, a sealing base 25, and a sealing cap 26 sequentially from bottom to top. A cross-shaped open elastic silicone ring 252 is disposed at the center of the bottom of the sealing base 25. A puncture cone sealing cap 11 is disposed away from the tip of the puncture cone 1.

[0027] The upper surface of the sealing cap 26 is provided with a groove 261, and the bottom of the piercing cone sealing cap 11 is provided with a buckle 111. The piercing cone 1 passes through the sealing cap 26 from its tip and is connected to the groove 261 on the upper surface of the sealing cap 26 and the sealing cap 26 through the buckle 111 at the bottom of the piercing cone sealing cap 11.

[0028] The upper end face of the sealing base 25 and the lower end face of the sealing cover 26 are corresponding threaded caps.

[0029] The sealing base 25 and the sleeve base 213 are connected by a snap-fit ​​111. A buffer block 251 is provided on the lower end face of the bottom of the sealing base 25 along the circumference. The bottom of the buffer block 251 abuts against the sleeve cover 24. The buffer block 251 is a spring sheet.

[0030] A rubber pad 23 is provided between the sleeve base 213 and the sleeve cover 24. The rubber pad 23 has a rubber pad opening 231 corresponding to the connecting post 22 along its circumference.

[0031] A connecting post 22 is provided along the circumference of the sleeve base 213, and a sleeve cover 24 is provided with a sleeve cover opening 241 along the circumference corresponding to the connecting post 22. The sleeve cover 24 is connected to the sleeve base 213 through the connecting post 22.

[0032] The top of the connecting column 22 is provided with an elastic buckle 221. After the sleeve cover 24 is pressed over the elastic buckle 221, the elastic buckle 221 fixes the sleeve cover 24.

[0033] The main body of the puncture cannula 2 is provided with a gripping structure 211 near the cannula base 213, and the surface of the gripping structure 211 has threads 2111.

[0034] The implementation principle of a medical puncture device in this application embodiment is as follows: When assembling the puncture device of this application, first, the rubber pad 23 is put into the cannula base 213, and then the cannula cap 24 is pressed into the cannula base 213. The cannula cap 24 and the cannula base 213 are firmly fixed by the elastic buckle 221. Then, the sealing base 25 is connected to the cannula base 213 by the buckle 111. The bottom of the sealing base 25 is pressed against the cannula cap 24 by the buffer block 251. Then, the sealing cap 26 is screwed into the sealing base 25. Finally, the puncture cone 1 is inserted from the sealing cap 26 and passes through the sealing base 25, the cannula cap 24, the cannula base 213 and the main body of the puncture cannula 2 in sequence. Finally, the puncture cone sealing cap 11 is connected and fixed to the sealing cap 26 by the buckle.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A medical puncture device comprising a puncture cone (1), a puncture cannula (2) and a gas injection valve (3), characterized in that: The puncture cannula (2) includes a puncture cannula (2) body and a cannula base (213) disposed at the end of the puncture cannula (2) body. The cannula base (213) is provided with a cannula cap (24), a sealing base (25) and a sealing cap (26) in sequence from bottom to top. A cross-shaped open elastic silicone ring (252) is disposed at the center of the bottom of the sealing base (25).

2. The medical puncturing device according to claim 1, wherein: The sleeve base (213) is provided with a connecting post (22) along the circumference, and the sleeve cover (24) is provided with a sleeve cover opening (241) corresponding to the connecting post (22) along the circumference. The sleeve cover (24) is connected to the sleeve base (213) through the connecting post (22).

3. The medical puncturing device according to claim 2, wherein: The top of the connecting column (22) is provided with an elastic buckle (221). After the sleeve cover (24) presses over the elastic buckle (221), the elastic buckle (221) fixes the sleeve cover (24).

4. The medical puncturing device according to claim 3, wherein: A rubber pad (23) is provided between the sleeve base (213) and the sleeve cover (24), and the rubber pad (23) has a rubber pad opening (231) corresponding to the connecting column (22) along the circumference.

5. The medical puncturing device of claim 1, wherein: The sealing base (25) and the sleeve base (213) are connected by a snap-fit ​​(111). A buffer block (251) is provided on the lower end face of the bottom of the sealing base (25) along the circumference. The bottom of the buffer block (251) abuts against the sleeve cover (24). The buffer block (251) is a spring sheet.

6. The medical puncturing device of claim 1, wherein: The upper end face of the sealing base (25) and the lower end face of the sealing cap (26) are corresponding threaded caps.

7. The medical puncturing device of claim 1, wherein: The upper end face of the sealing cap (26) is provided with a groove (261), and the puncture cone (1) is provided with a puncture cone sealing cap (11) away from the tip of the puncture cone (1). The bottom of the puncture cone sealing cap (11) is provided with a buckle (111). The puncture cone (1) passes through the sealing cap (26) from the tip and is connected to the groove (261) on the upper end face of the sealing cap (26) and the sealing cap (26) through the buckle (111) at the bottom of the puncture cone sealing cap (111).

8. The medical puncturing device of claim 1, wherein: The main body of the puncture cannula (2) is provided with a gripping structure (211) near the cannula base (213), and the surface of the gripping structure (211) is provided with threads (2111).

Images