Implantable subcutaneous valve for the treatment of...

Details Implantable subcutaneous valve for the treatment of... Implantable subcutaneous valve for the treatment of...

2005-01-11

2005-01-11

Sykes, Angela D. (Department: 3762)

Surgery

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

With flow control means

C604S008000, C251S035000, C137S519500

Reexamination Certificate

active

06840917

ABSTRACT:
The invention relates to a subcutaneous valve having opening pressure that can be adjusted non-invasively from the outside, said valve comprising a body presenting a chamber with a cylindrical inside side wall, an inlet duct and an outlet duct for cerebospinal fluid both opening out in said side wall, a valve member such as a ball placed at the inside end of said inlet duct, a spring blade fitting closely to the side wall of said chamber and urging the valve member against its seat, and a moving member controlled from the outside and provided with means for locking it in a determined position, the length of the spring blade acting on the valve member being determined by the position of said moving member. The valve is remarkable in that said moving member is constituted by a resilient flexible arcuate blade fitting closely to the cylindrical inside wall of said chamber. The valve is applicable to the treatment of hydrocephalus.

REFERENCES:
patent: 3288142 (1966-11-01), Hakim
patent: 3527226 (1970-09-01), Hakim
patent: 4443214 (1984-04-01), Marion
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patent: 4676772 (1987-06-01), Hooven
patent: 5637083 (1997-06-01), Bertrand et al.
patent: 5643194 (1997-07-01), Negre
patent: 6371464 (2002-04-01), Porche et al.
patent: 0 060 369 (1982-09-01), None
patent: 0 421 557 (1991-04-01), None
patent: 2 721 520 (1995-12-01), None

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