Hypodermic needle

Details Hypodermic needle Hypodermic needle

1993-02-19

1994-03-01

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604274, A61M 500

Patent

active

052902676

ABSTRACT:
The invention concerns a cannula comprising a cannula tube with a preferably rigid upper section, an end section which is bent laterally and a hook-shaped curved section which has in its concave side a tangentially inward ground lumen opening. The lumen opening has a sharply inwardly directed rear edge. This results in the advantage that during piercing of natural and synthetic walls the cutting of plugs from the material to be perforated is avoided.

REFERENCES:
patent: 3099988 (1963-08-01), Ginsburg
patent: 3788320 (1974-01-01), Dye
patent: 4383530 (1983-05-01), Bruno
patent: 4490139 (1984-12-01), Huizenga et al.
patent: 4565545 (1986-01-01), Suzuki
patent: 4889529 (1989-12-01), Haindl

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