Method of and means for implanting a pressure and force sensing apparatus
US4993428A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1990 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Feb 12, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0261
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This apparatus is adapted for replaceable implantation in soft body tissues for the measurement of the mechanical behavior of the soft tissues of the body. The apparatus consists of a thin walled tube with a piezo-resistive strain gauge element bonded to its walls. Tension in tissue fiber bundles results in a squeezing pressure against the sides of the tube, which produces a change in the shape of the tube and thus a change in the resistance of the strain gauge element. This resistance change is then measured and displayed. A method of inserting and removing the apparatus is also described, as are several techniques for calibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.