Dialysis needle

Details Dialysis needle Dialysis needle

1984-03-16

1986-04-29

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604117, 604411, A61M 5005

Patent

active

045854467

ABSTRACT:
A dialysis needle or the like comprises a tube with a razor edged cutting blade extending diametrically across its forward end. The blade has a generally "V" shape with a pair of razor sharp cutting edges converging forwardly from opposite sides of the tube and terminating in a needle-sharp point. A pair of diametrically opposed, smooth, tissue-spreading ribs are located in a plane normal to the cutting edges and converge forwardly from opposite sides of the tube to positions immediately rearwardly adjacent of the point. Two specific embodiments are described: an all-stainless-steel version; and a plastic version with a cutting blade insert.

REFERENCES:
patent: 1150387 (1915-08-01), Roberts
patent: 2601580 (1952-06-01), Yanus
patent: 2862495 (1958-12-01), Gewecke
patent: 2989053 (1961-06-01), Hamilton
patent: 3119391 (1964-01-01), Harrison
patent: 3633580 (1972-01-01), Knox
patent: 3645268 (1972-02-01), Capote
patent: 3831814 (1974-08-01), Butler
patent: 3906932 (1975-09-01), Ayres

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