Reducing incremental measurement sensor error
US10492741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Oct 19, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/702
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
For position sensors, e.g., a fiber-based system, that build a shape of an elongated member, such as a catheter, using a sequence of small orientation measurements, a small error in orientation at the proximal end of the sensor will cause large error in position at distal points on the fiber. Exemplary methods and systems are disclosed, which may provide full or partial registration along the length of the sensor to reduce the influence of the measurement error. Additional examples are directed to applying selective filtering at a proximal end of the elongated member to provide a more stable base for distal measurements and thereby reducing the influence of measurement errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.