A side-triggered blood collection device

Abstract

The invention discloses a laterally-triggered hemostix. The laterally-triggered hemostix comprises an outer sleeve, an inner sleeve, a blood taking needle, an end cover and a trigger spring, wherein the upper end of the outer sleeve is open, and the lower end of the outer sleeve is provided with a needle outlet; the inner sleeve is arranged in an inner cavity of the outer sleeve and provided with two guide grooves; the blood taking needle is composed of a needle handle and a steel needle, two guide wings are arranged on the needle handle, and the blood taking needle is arranged in the inner cavity of the outer sleeve and penetrates through the inner sleeve; the end cover is fixedly mounted at the open end; the trigger spring is connected with the end cover and the needle handle; the side wall of the outer sleeve is provided with a trigger port, a limit table is arranged in the inner cavity of the outer sleeve, and the inner sleeve is movably supported by the limit table and is aligned with the trigger port; when the inner sleeve is located at a first position on the limit table, the two guide wings abut against the inner sleeve, and the blood taking needle is to be triggered; when the inner sleeve is located at a second position of the limit table, the two guide wings and the two guide grooves in the inner sleeve form sliding fit correspondingly, the blood taking needle moves towards the needle outlet under the action of the trigger spring, and triggered blood taking is realized. According to the hemostix, the component structure is simplified, and cooperation points among components are reduced.

Description

technical field [0001] The invention belongs to the technical field of peripheral blood collection, in particular to a side-triggered blood collection device. Background technique [0002] Existing peripheral blood sampling devices can be divided into three types according to different trigger positions: upper triggering, lower triggering and side triggering. Side triggering type blood sampling devices are also called side triggering type blood sampling devices. The upper trigger type is activated by pressing the upper cover, the lower trigger type is activated by the lower end of the upper top inner sleeve, and the side trigger type is activated by setting an unlock button or unlock arm on one side. At present, the peripheral blood sampling devices sold in the market are mainly of the lower trigger style, while the upper trigger and side trigger types are less. Among them, the existing side-triggered blood collection devices generally have the disadvantages of complex comp...

AI Technical Summary

Problems solved by technology

Among them, the existing side-triggered blood collection devices generally have the disadvantages of complex structure of parts and many matching points between parts, which increases the difficulty of processing the mold corresponding to the parts and the difficulty of assembling the parts, resulting in higher product costs

Images