Surgical scalpel with retractable blade guard

Details Surgical scalpel with retractable blade guard Surgical scalpel with retractable blade guard

1989-04-06

1991-12-10

Rosenbaum, C. Fred

Surgery

Instruments

Cutting, puncturing or piercing

30151, 30335, A61B 1732

Patent

active

050714260

ABSTRACT:
A scalpel is provided with a blade guard which is mounted for movement between a blade-guarded position and a blade-exposed position and an actuating mechanism for the blade guard is positioned in such a way that the fingers of the surgeon automatically engage the mechanism when the scalpel is held in its normal position of use. The actuating mechanism is coupled to the blade guard through a linkage assembly which causes the blade guard to move over a substantially greater distance than the distance which the surgeon's fingers move in operating the actuating mechanism. In a preferred embodiment, the blade guard slides over a linear path, the actuating mechanism comprises a tongue-like structure integral with the scalpel, and the linkage assembly comprises a plurality of pivotally interconnected lever arms. One of the lever arms is positioned so as to be captured in a detent mechanism when the blade guard is fully retracted to its blade-exposed position.

REFERENCES:
patent: 2380787 (1945-07-01), Pierce et al.
patent: 3905101 (1975-09-01), Shepherd
patent: 4713885 (1987-12-01), Keklak et al.
patent: 4735202 (1988-04-01), Williams
patent: 4757612 (1988-07-01), Peyrot

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