Extensometer
US4294015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1979 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Dec 27, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An extensometer for detecting traumatized ligaments where the elongation of the ligament is either abnormally large or abnormally small compared to the elongation measured on a healthy ligament for an angle of flexion of the knee. The extensometer includes at least one flexible member having a strain gauge secured thereto to measure deflexion of the flexible member from its normal configuration. The flexible member has a free end and is secured at its opposed end to a support base. A clamping member is provided to retain the free end of the flexible member on a ligament while maintaining the support base substantially stationary with respect to the ligament whereby elongation of the ligament is detected by the deformation of the flexible member from its initial configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.