Surgical instruments and assemblies

Details Surgical instruments and assemblies Surgical instruments and assemblies

1989-11-03

1991-10-08

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604218, 604272, 12820729, A61M 1600

Patent

active

050551078

ABSTRACT:
A surgical instrument for use in forming a tracheostomy comprises a needle with a sharply pointed angled tip joined at its rear end to plastics hub. The length of the needle from the hub is greater than the thickness of neck tissue but less than the distance between the skin surface and the anterior wall of the trachea. The hub has a laterally extending face which has an area at least fifty times the cross sectional area of the needle. Two parallel walls have stepped edges which provide a gripping region for the hub, enabling it to be gripped between finger and thumb. A tapered recess in the hub receives the nose of a syringe which provides a loss of resistance device so that the plunger can be displaced along the barrel when the tip of the needle enters the trachea.

REFERENCES:
patent: 2263692 (1941-11-01), Everett
patent: 3841334 (1974-10-01), Wolf
patent: 3886946 (1975-06-01), Hyde
patent: 3916903 (1975-11-01), Pozzi
patent: 4364391 (1982-12-01), Toye
patent: 4520810 (1985-06-01), Weiss
patent: 4677978 (1987-07-01), Melker

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