Capillary blood drawing device

Details Capillary blood drawing device Capillary blood drawing device

1992-06-09

1993-06-08

Hindenburg, Max

Surgery

Instruments

Cutting, puncturing or piercing

A61B 1732

Patent

active

052174808

ABSTRACT:
A compact, efficient and disposable capillary blood drawing device by which a patient's tissue can be punctured and a blood sample collected by the same reliable device. The blood drawing device includes the integral connection of a solid core needle and a spring in which potential energy is initially stored. A release of the potential energy from the spring correspondingly causes the needle to be driven into contact with the patient's tissue to make a puncture therein. When the spring assumes an at rest position, the needle will be safely withdrawn in and shielded by the blood drawing device to avoid an accidental needle stick and the possible spread of disease. The blood drawing device also includes a flexible bladder in which blood from the puncture can be collected, under suction, and selectively expulsed, under compression, for medical examination and diagnostic purposes.

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