Safety type medical trocar limiting structure, application and processing method

A limit structure and trocar technology, applied in the field of medical devices, can solve problems such as the failure of the limit structure to rebound successfully, the failure of the fixing effect of the bayonet structure, and the lack of toughness of the bayonet material, so as to improve the stability of the limit and Safety, compact structure, high safety effect
CN113974790APending Publication Date: 2022-01-28้™ˆ่พ‰
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
้™ˆ่พ‰
Publication Date
2022-01-28

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Abstract

The invention discloses a safety type medical trocar limiting structure, application and a machining method, and relates to the technical field of medical instruments. According to the safety type medical trocar limiting structure, a safety type medical trocar comprises a catheter seat provided with an indwelling catheter at the front end and a needle seat provided with a puncture needle, the needle seat can slide in the catheter seat to form a sliding needle seat, the limiting structure comprises an annular groove formed in the needle seat and an elastic bayonet which is formed in the tail portion of the catheter seat and is integrated with the catheter seat, and the inner side section of the elastic bayonet is a straight section and can form a bayonet locking structure with the annular groove, so that the needle seat is limited at the tail end of the catheter seat. According to the invention, the limiting stability and safety of the limiting structure are improved, 360-degree dead-corner-free limiting is achieved, and the limiting structure has the advantages of being good in reliability, high in safety and compact in structure.
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Description

technical field

[0001] The invention relates to the technical field of medical instruments. Background technique

[0002] The puncture structure of arteries and veins is a commonly used device in the medical field. And after the needle of the piercing structure is used in medical care, it is desirable to quickly cover the needle and make it impossible for subsequent piercing, especially for needles intended to come into contact with blood. Accordingly, the prior art has disclosed safety medical trocars having a sliding body or sheath carried on a tubular sheath, the sliding sheath or protector being able to Seals the needle forward so that it is immediately locked in place when fully retracted, preventing accidental needle sticks. In view of the improvement of the above-mentioned technology, the prior art also discloses some safety medical trocars having a position-limiting structure, a non-detachable puncture needle structure and a self-cleaning function.

[0003] At pre...

Claims

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