Surgery – Instruments – Cutting – puncturing or piercing
Patent
1992-12-04
1994-03-08
Rosenbaum, C. Fred
Surgery
Instruments
Cutting, puncturing or piercing
606170, 30162, A61B 1732
Patent
active
052923290
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. An enlarged section of the latch mechanism is matched and engaged with an enlarged slot portion of 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 enlarged section of the latch mechanism is pushed transversely and disengaged with the enlarged slot portion of the tool/blade support member, the tool/blade support member is forced back to an inoperative position wherein 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
Gring Noelle Kent
Rosenbaum C. Fred
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