Apparatus and method for locating and mapping a catheter in intracardiac operations
US6185448A · kind A · utility
Inventor
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/2051
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for locating and mapping a catheter in a heart invasive operation, includes a permanent magnet with a north pole face, a permanent magnet with a south pole face, a frame for positioning the magnets on opposite sides of a person's body; first and second motors for revolving the permanent magnets in synchronism and in alignment with each other to create a directional magnetic field that revolves 360 degrees through the person's heart; a catheter for insertion into the heart, the catheter including a first sensor group of three mutually orthogonal sensors at the tip thereof and a second sensor group of three mutually orthogonal sensors in axially spaced relation to the first sensor group, each for detecting the relative strength of the revolving magnetic field; a magnetic field position detector which detects the angular position and speed of movement of the directional magnetic field; a plurality of electrodes spaced along an outer wall thereof for detecting electric signals which run along a wall of the heart; an ablation member at a tip of the catheter for burning out a wall of the heart; and a central processing unit for determining a location of the catheter position…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.