Lancing device capable of preventing needle unloading caused by misoperation

Abstract

A lancing device capable of preventing needle unloading caused by misoperation includes a pen cap, a cap base and a needle unloading rod. The lancing device is characterized in that a sliding groove is formed in the cap base, the front of the sliding groove is provided with a channel leading to the connection end of the pen cap and the cap base, and a shielding block is arranged on the sliding groove; a safety cock is arranged in the sliding groove in a sliding mode, and the safety cock is provided with an elastic body. When the pen cap is connected with the cap base, the pen cap pushes against the safety cock in the connection end, the safety cock is thus forced to be located at the rear end in the sliding groove, at the moment, the shielding block blocks the motion path of avoidance of the elastic body, and the elastic body is forced to block the motion path of a top block which moves forward along with the needle unloading rod by occupying the position; when the pen cap is separatedfrom the cap base, and the safety cock is located at the front end in the sliding groove, the elastic body is away from the shielding block and moves forward along with the needle unloading rod at the moment, the elastic body avoids the collision with the top block, and the motion path of the top block which moves forward along with the needle unloading rod is open. The lancing device solves thesafety problem of an existing lancing device in the aspect of prevention of needle unloading caused by misoperation.

Description

technical field [0001] The invention relates to a medical blood collection device, in particular to a blood collection pen matched with a disposable blood collection needle. The blood collection pen can prevent the user from unloading the needle by misoperation. Background technique [0002] The blood collection pen is a blood collection device used in conjunction with a disposable blood collection needle, wherein the blood collection pen is reusable, and the blood collection needle is only for one-time use in order to avoid cross-infection. The development of the blood collection pen has a history of decades, and the improvement of the blood collection pen has gone through many stages. At present, the blood collection pen is gradually becoming mature, but in the development of the blood collection pen, the safety and convenience of use have always been the key Issues of concern to those skilled in the art. [0003] Chinese patent CN103767713B announced on April 1, 2015 th...

AI Technical Summary

Problems solved by technology

The main reason for the analysis is that the structure of the blood collection pen lacks safety protection for the tail rod when the blood collection needle is installed, resulting in loopholes in the safety and convenience of the blood collection pen.

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