Brain ventricle shunt system with flow-rate switching mechanism

Details Brain ventricle shunt system with flow-rate switching mechanism Brain ventricle shunt system with flow-rate switching mechanism

1986-12-08

1988-11-01

Richman, Barry S.

Surgery

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

With flow control means

604247, A61M 500

Patent

active

047816732

ABSTRACT:
A brain ventricle shunt system provided with a flow-rate switching mechanism is used as a brain ventricle-peritoneum shunt or a brain ventricle-auricle shunt. It is surgically implanted in the body of a hydrocephalic patient or the like. It is constructed of a check valve for preventing the cerebro-spinal fluid from flowing back to the brain ventricle and a flow-rate switching mechanism for switching the flow rate of cerebro-spinal fluid to be fed from the brain ventricle catheter to the peritoneum or auricle catheter. The switching mechanism is provided with flow passages connected to one another in parallel, flow-rate regulators interposed respectively in the flow passages to control the flow rates through the respective flow passages to predetermined flow rates, and on-off valves interposed respectively in the flow passages so as to shut off the flow passages individually upon the application of external drive forces thereto. The system has merit in that the switching operation of the flow rate, which has been considered difficult, can be achieved very easily and safely. It permits switching of the flow rate among many levels without failure. The flow-rate controlling position can be precisely determined either visually or palpably through the scalp.

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patent: 3827439 (1974-08-01), Schulte et al.
patent: 3985140 (1976-10-01), Harris
patent: 4615691 (1986-10-01), Hakim et al.
patent: 4627832 (1986-12-01), Hooven et al.
patent: 4636194 (1987-01-01), Schulte et al.
patent: 4681559 (1987-07-01), Hooven

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