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

Pending Publication Date: 2022-01-28
陈辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in practical applications, it is found that the above-mentioned limiting structure cannot rebound successfully during use due to the limitation of the outer diameter of the trocar and the insufficient toughness of the bayonet material, and the failure of the fixing effect of the bayonet structure creates a safety risk.

Method used

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  • Safety type medical trocar limiting structure, application and processing method
  • Safety type medical trocar limiting structure, application and processing method
  • Safety type medical trocar limiting structure, application and processing method

Examples

Experimental program
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Effect test

Embodiment

[0041] see figure 1 As shown, it is a position-limiting structure of a safety medical trocar provided by an embodiment of the present invention.

[0042] The safety medical trocar 10 includes a catheter hub 100 with an indwelling catheter at the front end and a needle hub 200 with a puncture needle, and the needle hub 200 can slide inside the catheter hub 100 to form a sliding needle hub.

[0043]The limiting structure may include an annular groove 220 provided on the needle hub 200 and an elastic bayonet 120 disposed at the tail of the catheter adapter 100 and integrated with the catheter adapter. The inner section of the elastic bayonet 120 is a straight section 123 , so that the elastic bayonet 120 can form a bayonet locking structure with the aforementioned annular groove 220 , so that the needle hub 200 is limited at the tail end of the catheter hub 100 .

[0044] Specifically, combine figure 2 As shown, the safety medical trocar 10 may include a catheter hub 100, a ne...

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PUM

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61M5/158
CPCA61B17/3415A61M5/158A61M2005/1587
Inventor 陈辉邹最张欣陈珍珍张哲
Owner 陈辉
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