Needle devices for medical use

Details Needle devices for medical use Needle devices for medical use

1995-11-06

1997-03-18

Buiz, Michael Powell

Surgery

Instruments

Cutting, puncturing or piercing

606182, 606183, A61B 1714

Patent

active

056118090

ABSTRACT:
A skin pricker has a barrel (1) housing a lancet (3) which is urged rearwardly by a spring (4 ). A plunger (2) can move the lancet (3) against the spring (4) to project the lancet's needle tip or tips (18) from the forward end of the barrel (1). The plunger (2) presses on the rear of the lancet (3) through a firing pin (16) integrally formed with the plunger and connected to it by a thin web (17). Increased pressure after needle tip projection shears the web and the lancet (3) is free to be returned by the spring (4), withdrawing the needle tip or tips.

REFERENCES:
patent: 3221739 (1965-12-01), Rosenthal
patent: 4653513 (1987-03-01), Dombrowski

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