Microcannula

Details Microcannula Microcannula

1994-11-30

1996-01-16

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604264, 604239, 604274, A61M 5178

Patent

active

054844177

ABSTRACT:
The invention is a microcannula which comprises a hollow tube having a small cross sectional size and a side beveled tip wherein the angle of the bevel is about 25 degrees. A segment of the hollow tube distal to the beveled tip has an expanded outside diameter which may be provided by a tightly fitting ring member which may be moved to a desired position on the outside of the hollow tube. The tight fit of the ring is preferably obtained through an interference fit between the ring and the out side surface of the hollow tube. A conically tiped trochar is fitted tightly but removably in the lumen of the hollow tube. The trochar may be provided with a flattened or swedged segment.

REFERENCES:
patent: 3750667 (1973-08-01), Pshenichny
patent: 3788119 (1974-01-01), Arrigo
patent: 4191176 (1980-03-01), Spina
patent: 4411657 (1983-10-01), Galindo
patent: 4413993 (1983-11-01), Guttman
patent: 4588398 (1986-05-01), Dougherty
patent: 4808170 (1989-02-01), Thornton
patent: 4842585 (1989-06-01), Witt
patent: 4994036 (1991-02-01), Biscoping
patent: 5100390 (1992-03-01), Lubeck
American Heritage Dictionary, second edition, 1982 p. 257.

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