Stepped needle

Details Stepped needle Stepped needle

1990-02-12

1991-03-26

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604272, A61M 518

Patent

active

050025350

ABSTRACT:
A stepped needle comprising, a proximal hollow hub, a first elongated tubular portion extending from the hub of a first larger diameter, and a second elongated tubular end portion located distal the first tubular portion of a second smaller diameter.

REFERENCES:
patent: 3993079 (1976-11-01), Gatztanondo
patent: 4202332 (1980-05-01), Tertzegen
patent: 4405314 (1983-09-01), Cope
patent: 4652256 (1987-03-01), Vaillancourt

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