Wireless electromagnetic navigational element
US11234769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2018 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Sep 29, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2207/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical system tracks the position of a portion of a medical instrument within a body of a patient. In some embodiments, the medical instrument includes a needle, a syringe, and a needle-position-tracking element positioned between the needle and the syringe and in fluid communication with both. The needle-position-tracking element includes an electromagnet structure that includes a core, a conductive coil wrapped around the core, and ancillary circuitry configured to pass a current through the conductive coil to thereby generate a magnetic field. A sensor device senses the magnetic field and generates corresponding sensor signals. A control circuit calculates the position of a portion of the medical instrument based on the sensor signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.