Self adjusting hydrocephalus valve

Details Self adjusting hydrocephalus valve Self adjusting hydrocephalus valve

2011-04-12

2011-04-12

Deak, Leslie (Department: 3761)

Surgery

Devices transferring fluids from within one area of body to...

With flow control means

C604S008000, C604S006160

Reexamination Certificate

active

07922685

ABSTRACT:
A self adjusting hydrocephalus valve that continuously drains cerebrospinal fluid at a rate which is proportional to the average pressure difference across the valve. The valve employs a ball-in-cone mechanism having an associated biasing element that is insensitive to high frequency pressure variations for regulating the opening of the valve mechanism. The biasing element includes flexible bellows having a preset tension.

REFERENCES:
patent: 2859770 (1958-11-01), Buivid
patent: 2938540 (1960-05-01), Schatzman et al.
patent: 3276470 (1966-10-01), Griffing
patent: 3450155 (1969-06-01), Froehner et al.
patent: 3886948 (1975-06-01), Hakim
patent: 3977391 (1976-08-01), Fleischmann
patent: 3999553 (1976-12-01), Spitz et al.
patent: 4027661 (1977-06-01), Lyon et al.
patent: 4106510 (1978-08-01), Hakim et al.
patent: 4332255 (1982-06-01), Hakim et al.
patent: 4387715 (1983-06-01), Hakim et al.
patent: 4443218 (1984-04-01), DeCant, Jr. et al.
patent: 4551128 (1985-11-01), Hakim et al.
patent: 4595390 (1986-06-01), Hakim et al.
patent: 4610658 (1986-09-01), Buchwald et al.
patent: 4615691 (1986-10-01), Hakim et al.
patent: 4627443 (1986-12-01), Chubbuck et al.
patent: 4729762 (1988-03-01), Doumenis
patent: 4772257 (1988-09-01), Hakim et al.
patent: 4776839 (1988-10-01), Doumenis
patent: 4787886 (1988-11-01), Cosman
patent: 4867741 (1989-09-01), Portnoy
patent: 5069663 (1991-12-01), Sussman et al.
patent: 5535740 (1996-07-01), Baghaee-Rezaee et al.
patent: 5810761 (1998-09-01), Saens-Arrollo
patent: 5928182 (1999-07-01), Kraus et al.
patent: 5931186 (1999-08-01), Skoglund
patent: 5935084 (1999-08-01), Southworth
patent: 5980480 (1999-11-01), Rubenstein et al.
patent: 6264625 (2001-07-01), Rubenstein et al.
patent: 6953444 (2005-10-01), Rosenberg
patent: 7318813 (2008-01-01), Rosenberg
patent: 1 331 019 (2003-07-01), None
EP Communication, from corresponding EP 04 253 832.2, dated Jan. 18, 2007.

Affiliated with

Also associated with

Rating

Self adjusting hydrocephalus valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self adjusting hydrocephalus valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self adjusting hydrocephalus valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2719340