Single-step operation inner-cap type blood collector

Abstract

Disclosed is a single-step operation inner-cap type blood collector. The blood collector comprises a shell, a needle core, a spring and a pusher. The blood collector is characterized in that a buttonis installed on the side portion of the shell, a cuneiform elastic foot is installed on the button, the cuneiform elastic foot is used for separating the needle core and a needle cap, the elastic foothas a bending deformation ability in the direction of being perpendicular to a cuneiform surface, and the elastic foot is rigid in the direction of being paralleled to the cuneiform surface; a contractive neck part installed between the needle core and the needle cap, an accommodating space is formed at the contractive position so that the needle core and the needle cap can be separated by inserting the cuneiform on the elastic foot into the accommodating space; sliding lifting wings are symmetrically installed on the two sides of the needle cap, and sliding lifting oblique planes are symmetrically installed on the two sides of the front portion of an ejection sliding rail of the pusher corresponding to the sliding lifting wings; a triggering oblique plane is installed on the side portionof the pusher body, the triggering oblique plane is used for making the elastic foot generate a bending deformation. The blood collector solves the problems that the prior internally installed needlecap blood collector spring is subjected to unbalanced stress and product performance problems occur due to high pressure when the prior internally installed needle cap blood collector is used, and the blood collecting can be completed through single-step operation when the single-step operation inner-cap type blood collector is used.

Description

technical field [0001] The invention relates to the field of medical blood collection instruments, in particular to a head-pressing disposable safety blood collection device (or blood collection needle) with an ejection mechanism. The needle cap of the blood collection device is arranged in the shell of the blood collection device (built-in needle cap), and only one operation is required to complete the blood collection action during use. Background technique [0002] In the field of medical blood collection, disposable blood collection devices are popular among medical staff and patients for their small size, safe use, and convenient operation. They are currently widely used in various medical institutions and diabetic patients. This kind of blood collection device has its own ejection mechanism, compact structure, one-time use as a whole, safe and convenient, so it has strong market development potential. [0003] Chinese patent CN101374461A discloses an invention patent ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above deficiencies in the prior art, the present invention provides a one-step operation inner cap blood collection device, the purpose of which is to solve the product performance problems caused by the unbalanced force on the spring of the above blood collection device and the high pressing force during use.

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