Sheath visualization method by means of impedance localization and magnetic information
US10398347B2 · kind B2 · utility
0Cited by
12References
7Claims
0Family size
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Key dates
| Filing date | Dec 18, 2015 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Jan 15, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0681
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Catheterization is carried out by inserting a sheath into a human patient and moving a catheter having an electrode through the sheath lumen. A variation between a first threshold value and a second threshold value in electrical current through the electrode is identified. Responsively to the variation, it is reported that a portion of the catheter has transitioned between an in-sheath condition and an out-of-sheath condition. The sheath is defined and identified by the historical data of the readings of the magnetic sensor during its movements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.