System and method for detection of metal disturbance based on contact force measurement
US9211094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2010 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jul 10, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/056
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus and method for detecting metal disturbance during a medical procedure has a probe having an insertion tube, a joint, and a joint sensor for sensing a position of the insertion tube. The joint sensor has first and second subassemblies as magnetic transducers. A processor is used for measuring force using the joint sensor, and a threshold field value stored therein. The processor receives and processes one or more signals output by either the first and second subassemblies responsive to a magnetic field so as to detect changes in a position of insertion tube. The processor compares the sensed field value to the threshold field value and identifies a presence of a metal object when the sensed field value is below the threshold field value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.