Piezoelectric sensor in a living organism for fluid pressure measurement
US6886411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Oct 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0002
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.