Piezoelectric sensor in a living organism for fluid pressure...

Details Piezoelectric sensor in a living organism for fluid pressure... Piezoelectric sensor in a living organism for fluid pressure...

2005-05-03

2005-05-03

Oen, William (Department: 2855)

Measuring and testing

Fluid pressure gauge

Mounting and connection

Reexamination Certificate

active

06886411

ABSTRACT:
A fluid pressure sensor for a lead or catheter intended for placement in a living organism, such as a human heart, includes a rigid annular or tubular supporting structure and a piezoelectric element disposed on at least a portion of the outer surface thereof. The piezoelectric element delivers an electrical signal when subjected to a pressure variation, and exhibits circumferential sensitivity. The rigidity of the sensor is defined to satisfy predetermined criteria to ensure that the sensor, when sensing pressure transferred to the sensor through an on-growth of tissue on the sensor, which is at least 90% of the signal which the sensor would emit without the on-growth.

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“Klinische Erfahrungen mit einem auf dem Rechtsventrikulären dP/dt basierenden VVIR-Schrittmachersystem,” Heynen et al, Herzschrittmacher, vol. 13, No. 1 (1993) pp. 34-44, no month.

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