A heel lancing device

Abstract

The invention provides a heel blood collector. The heel blood collector comprises an outer shell, a trigger key, a firing spring, a blood collecting execution component and a locking component, wherein the outer shell is composed of two half shell bodies, a knife outlet opening and a mounting notch are formed in the front and rear ends of the outer shell, respectively, and a guide limiting columnand a positioning column are arranged at the inner side of the first half shell body; the trigger key is arranged at the mounting notch and is connected with the shell in a manner of being capable ofmoving back and forth; the blood collecting execution component is composed of a knife rest and a blade, and a guide hole formed by front and back communication of a straight guide hole part and a round guide hole part is arranged in the middle of the knife rest; the blade is fixedly connected with the front end part of the knife rest; the firing spring is arranged between the trigger key and theknife rest; the locking component comprises a positioning arm and a torsional spring, the positioning arm and the torsional spring sleeve the positioning column coaxially, a hook head is arranged at the end part of the positioning arm, and a hook table is arranged at the other end of the rear part of the knife rest; one end of the torsional spring is connected with a hang column arranged on the positioning arm, and the other end of the torsional spring is connected with the outer shell. For the heel blood collector, the blood collecting painful feeling is reduced, and the stability of the blood collection amount is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a heel lancing device for infants. Background technique [0002] Neonatal heel blood screening refers to the examination of heel blood collected after 72 hours of birth. It is mainly aimed at diseases with high incidence, no obvious symptoms in the early stage but positive laboratory indicators, which can be diagnosed and treated. At present, the heel blood collection of newborns is generally realized by two types of blood collection devices: one type of blood collection device is an ordinary peripheral blood collection device, and this type of blood collection device realizes blood collection by acupuncture, which is mainly used in finger pulp blood collection; One type of blood collection device is a heel blood collection device specially designed for heel blood collection, and this type of blood collection device realizes blood collection by cutting a blade. Compared...

AI Technical Summary

Problems solved by technology

[0003] At present, there are relatively few types of heel lancing devices on the market. The existing heel lancing devices still need to be further improved in terms of blood collection speed and stability of blood collection volume. In addition, because heel lancing devices are disposable consumables , in the case of achieving low pain and stable blood collection, the fewer components and the simpler the structure, the more it can meet the market demand

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