Chorion biopsy catheter

Details Chorion biopsy catheter Chorion biopsy catheter

1990-01-30

1992-04-21

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604170, 604281, 604282, 128758, A61M 5178, A61M 2500, A61B 1000

Patent

active

051063778

ABSTRACT:
A catheter is provided for sampling, and particularly for sampling chorionic villi. The catheter has a cannula of a material opaque to ultrasound and having a distal portion capable of being curved manually into a desired curvature for use, and defining a lumen extending throughout the length of the cannula for containing a supple obturator to close the distal end of the lumen during insertion and to permit removal of the sample by applying a negative pressure to the proximal end of the catheter once the catheter is in position and the obturator removed.

REFERENCES:
patent: 1900006 (1933-07-01), Dozier
patent: 1906678 (1933-05-01), Wappler
patent: 2118631 (1938-05-01), Wappler
patent: 3777743 (1973-12-01), Binard et al.
patent: 3889657 (1975-06-01), Baumgarten
patent: 4033331 (1977-07-01), Guss et al.
patent: 4563181 (1986-01-01), Wijayarathra et al.
patent: 4627444 (1986-12-01), Brooker
patent: 4747827 (1988-05-01), Micek
patent: 4756708 (1988-07-01), Martin
patent: 4834709 (1989-05-01), Banning et al.
patent: 4834726 (1989-05-01), Lambert
patent: 5047018 (1991-09-01), Gay et al.

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