Trocar

Details Trocar Trocar

1990-02-16

1991-07-09

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

606185, A61M 5178

Patent

active

050302060

ABSTRACT:
The trocar is provided with a leaf spring in the housing which abuts a collar on a protective tube which surrounds the sharp tip of the stylet. A spring finger extending from the leaf spring is actuated by a slider when the two housings of the trocar components are squeezed together. The spring finger initially lifts the leaf spring from the collar to release the protective tube for sliding proximally while the collar subsequently lifts the spring finger from the shoulder of the slider to prevent a re-release of the leaf spring when the protective tube 16 is moved back into the extended position.

REFERENCES:
patent: 2187372 (1940-01-01), Capaldo
patent: 2483906 (1949-10-01), Lavarone
patent: 2501940 (1950-03-01), Hibbard
patent: 2678842 (1954-05-01), Usalis
patent: 2950134 (1960-08-01), Strange
patent: 3468568 (1969-09-01), Ulich
patent: 4284287 (1981-08-01), Esposito
patent: 4418707 (1983-12-01), Wu
patent: 4601710 (1986-07-01), Moll
patent: 4654030 (1987-03-01), Moll et al.
patent: 4738663 (1988-04-01), Bogan
patent: 4911693 (1990-03-01), Paris

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