Verress needle with enhanced acoustical means

Details Verress needle with enhanced acoustical means Verress needle with enhanced acoustical means

1991-05-03

1992-08-18

Mancene, Gene

Surgery

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

Treating material introduced into or removed from body...

604 26, 604274, A61M 5178

Patent

active

051394855

ABSTRACT:
A Verress-type needle which has a sharpened outer needle and allows passage of a blunt inner needle within the outer needle. The Verress needle also contains a position indicator to indicate the position of the inner needle within the outer needle, so that the user knows whether the inner needle is in a protective or non-protective position. Further, a liquid level indicator demonstrates the path of liquid flow within the Verress-type needle. Finally, there is an acoustical enhancement mechanism, which allows the user to know whether the blunt inner needle has sprung forward within the abdominal cavity, to its most forward, protective position.

REFERENCES:
patent: 1527291 (1925-02-01), Zorraquin
patent: 4627841 (1986-12-01), Dorr
patent: 4808168 (1989-02-01), Warring
patent: 4869717 (1989-09-01), Adair
patent: 4944728 (1990-07-01), Carrell et al.

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