Intracranial pressure sensing device

Details Intracranial pressure sensing device Intracranial pressure sensing device

1974-11-29

1976-03-16

Kamm, William E.

Surgery

Truss

Perineal

73398C, 73406, A61B 507

Patent

active

039439151

ABSTRACT:
A fluid pressure sensor for use internal to the human body including a completely ceramic sectioned outer shell having an opening therein for allowing fluid access to a thin metal diaphragm member. The thin metal diaphragm member is disposed between the sectioned outer shell by diffusion bonding in order to limit exposure of the human tissue solely to the diaphragm member and the ceramic shell. A variable tuned LC circuit is responsive to fluid pressure for establishing a predetermined electrical parameter. The electrical parameter is capable of affecting an electromagnetically responsive electrical circuit means located external to the human body for providing data indicative of the fluid pressure. The thin diaphragm member constitutes one plate of the LC circuit and the remainder of the LC circuit is located beneath the thin diaphragm member so as to be protected from fluid and moisture.

REFERENCES:
patent: 3034356 (1962-05-01), Bieganski et al.
patent: 3040736 (1962-06-01), Jackson
patent: 3243496 (1966-03-01), Silverstein
patent: 3757770 (1973-09-01), Brayshaw et al.

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