Retractable surgical knife

Details Retractable surgical knife Retractable surgical knife

1993-12-03

1995-06-13

Rosenbaum, C. Fred

Surgery

Instruments

Cutting, puncturing or piercing

606170, 401113, 30162, A61B 1732

Patent

active

054238439

ABSTRACT:
A retractable "ball-pen" like tool/scalpel, provided with a latch mechanism, is automatically retracted when not in use by pushing the latch mechanism and is extended when in use by pushing a tool/blade support member of the tool/scalpel. The latch mechanism is engaged with the tool/blade support member when the tool/blade support member is pushed to an operative position wherein a tool/blade is exposed from a sheath member. The latch mechanism is pushed transversely and disengaged with the tool/blade support member whereby the tool/scalpel is retracted into the sheath member.

REFERENCES:
patent: 2446044 (1948-07-01), Davis
patent: 2905146 (1959-09-01), Johmann
patent: 3144005 (1964-08-01), Johmann
patent: 3657812 (1972-04-01), Lee
patent: 3906626 (1975-09-01), Riuli
patent: 5071426 (1991-12-01), Dolgin et al.
patent: 5116351 (1992-05-01), Frassetti
patent: 5139507 (1992-08-01), Dolgin et al.
patent: 5141517 (1992-08-01), Shutt
patent: 5250063 (1993-10-01), Abidin et al.
patent: 5292329 (1994-03-01), Werner
patent: 5306237 (1994-04-01), Clement et al.

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