Method and system for determining a lumen pressure
US11103147B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2021 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4913
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system are provided for determining a pressure associated with a lumen of a patient. A wireless sensor is positioned in the lumen of the patient. The sensor has a body with a pressure sensitive surface, including a sealed cavity that holds an inductive-capacitive (LC) resonant circuit. A capacitance of the LC resonant circuit is configured to vary in response to changes in pressure in the lumen. The LC resonant circuit has a charge time related to a quality factor (Q) of the LC resonant circuit. The LC resonant circuit is energized with an energizing signal during a measurement cycle. The energizing signal has a duty cycle with an on-time that is set, in part, based on the charge time. A ring down response is received from the wireless sensor. The ring down response is utilized to calculate the pressure associated with the lumen of the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.