Lancing device with automatic cocking

Details Lancing device with automatic cocking Lancing device with automatic cocking

1994-02-03

1994-09-27

Aschenbrenner, Peter A.

Surgery

Instruments

Cutting, puncturing or piercing

128770, A61B 1734

Patent

active

053503929

ABSTRACT:
The present invention is a lancing device with an automatic cocking feature. The automatically cocking lancing device utilizes a firing burton loaded with a firing button spring and a drive spring connecting the firing button to a plunger. As the user presses the firing burton and compresses the firing burton spring, the user also moves the plunger until the plunger engages a latching mechanism. The latching mechanism holds the plunger in a latched position, and, as the user continues pressing the firing button, the user compresses the drive spring connected to the plunger. Before firing, the drive spring is compressed enough such that the biasing force of the drive spring is sufficient to cause the plunger to strike and drive a lancet into the user's finger. At that point, the pressing of the firing button causes the lancing device to fife. The plunger unlatches and drives the lancet into the user's finger under the biasing force of the drive spring. At firing, the firing burton spring is compressed, and, once the user releases the firing button, the firing button spring returns the plunger and the firing button to the cocked position under the biasing force of the firing burton spring.

REFERENCES:
patent: 4203446 (1980-05-01), Hofert et al.
patent: 4527561 (1985-07-01), Burns
patent: 4637403 (1987-01-01), Garcia et al.
patent: 4653513 (1987-03-01), Dombrowski
patent: 4677979 (1987-07-01), Burns
patent: 4895147 (1990-01-01), Bodicky et al.
patent: 4990154 (1991-02-01), Brown et al.
patent: 5029583 (1991-07-01), Mesrol et al.
patent: 5074872 (1991-12-01), Brown et al.
patent: 5196025 (1993-03-01), Ranalletta et al.

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