Safety shape destruction medical needle

Abstract

The invention provides a safety shape destruction medical needle, which comprises a sheath, a needle tube, a needle stand and a protecting cap, characterized in that, the needle stand is provided with a through guiding-tube with two open ports at the front, middle and rear portions, the chamber of the front needle tube fixed section or projection on the inner wall can match with the needle tube containing needle tube positioning arrangement, thus orienting a needle tube inclined surface. The middle destroying segment of the needle stand is provided with a guiding-tube thin wall, the coupling seat on the rear portion needle stand outer wall can match with the sheath connecting arm, thus the sheath can rotate back and forth on the needle stand, the hooking arm on the elastic-wall block can secure the needle tube in the longitudinal groove of the sheath, the thin wall of the guiding tube can be punctured by the tip-shape projection in the sheath, so as to destroy the whole needle.

Description

Technical field: [0001] The invention relates to a medical needle with a needle seat in a medical device, especially an injection needle with a safety destroying device, a needle for infusion, a blood draw, an intravenous indwelling needle, a puncture needle, and a sharp medical needle fixedly connected with them. instrument. Background technique: [0002] The initiative of using safe sharp needles to avoid bloodborne pathogen infection caused by accidental stab wounds during the treatment process has been accepted by the majority of medical workers. Defects in practicability and high cost often lead to these safety needles not being widely accepted and used, such as various safety self-destructing syringes, because of the integrated structure of the needle and barrel, it is impossible to complete the suction and transfer of traditional syringes. The functions such as liquid and other needles and barrels need to be separated and performed, and they do not have the wide vers...

AI Technical Summary

Problems solved by technology

[0002] The initiative of using safe sharp needles to avoid bloodborne pathogen infection caused by accidental stab wounds during the treatment process has been accepted by the majority of medical workers. Defects in practicability and high cost often lead to these safety needles not being widely accepted and used, such as various safety self-destructing syringes, because of the integrated structure of the needle and barrel, it is impossible to complete the suction and transfer of traditional syringes. The functions such as liquid and other needles and cylinders need to be separated, and they do not have the wide versatility to replace traditional syringes. At the same time, the increase in production costs has further hindered its promotion.

In order to solve the above problems, world-renowned production and R&D enterprises, such as TERUMO, BECTON, and DICKINSON, have successively conducted research on safety devices for medical needles, and have applied for related design patents in recent years, such as TERUMO’s "Safety Needle Assembly", patent number: USP6695819, USP6719737; "Safety Shield Assembly" of B.D company, patent number: USP6440104, USP6780169, and the corresponding Chinese patent application 200410061887.1, etc., these patented technologies are based on clinical practical needs, simplified production process, etc. From the angle of view, it solves the problem of safe use of medical needles. It mainly plays a role of immediate safety protection for used medical needles. However, there are no effective prohibition measures and prohibition structures for maliciously opening its locking device and reusing medical needles. Due to the lack of practicability mentioned above, our patent 200410017774.1 proposed for the first time an innovative design that completely destroys the needle seat so that the entire medical needle can only be used once; in addition, due to the above-mentioned patented technology of safety medical needles, there is a requirement for the orientation of the needle tip bevel , so under the requirements of the production process, there is generally an additional ring-shaped connecting seat that fits on the needle seat and is used to connect the cover, so that the whole product is composed of five parts: the sheath, the needle tube, the needle seat, the ring-shaped connecting seat and the cover ;Although the patented product design of B.D Company intends to cast some components, such as the annular connection seat, the cover, and the needle seat, to reduce the assembly process in production, the production plan that can meet the design requirements at the same time is not clear or lags behind. Therefore, it is necessary to make further innovations in product design, so that while reducing components, simplifying the production process, and reducing production costs, the product can also achieve the effect of safe destruction

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