Pressure sensor and guide wire assembly for biological pressure measurements
US6167763A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2000 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Apr 12, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/09175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a sensor/guide wire device for biological pressure measurements having a guide wire (16, 17, 18, 21, 23) having a distal and a proximal end, and a pressure sensor device (19) mounted at the distal end of the guide wire. The distal portion can be a solid wire member (16) surrounded by a spiral member (18), and the sensor (19) can be an electrical sensor of a piezoresistive type. The sensor (19) is mounted on the solid wire (16). The sensor is mounted in a cantilevering fashion such that a pressure sensitive end of the sensor does not contact any structure other than its mount. This prevents forces (bending artifacts) from being exerted on the sensor, which could otherwise interfere with pressure measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.