Endocardial electrical mapping catheter
US5237996A · kind A · utility
Inventors
Key dates
| Filing date | Feb 11, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Feb 11, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/287
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endocardial mapping catheter for locating the ectopic focus of an abnormally functioning heart includes an actuator assembly and an elongated hollow support sheath which extends from the actuator assembly. A plurality of electrical probes are slidingly disposed for independent movement through the sheath, and each probe is attached to the actuator assembly for individual manipulation. A guide is mounted on the end of the sheath opposite the actuator assembly, at the distal end of the sheath, to radially deploy each electrical probe along a separate favorable trajectory as the probe is manipulated to move distally through the sheath. In operation, the probes are initially retracted into the sheath as the guide is positioned inside the left ventricle of the heart. Once the guide is positioned as desired, all of the probes are individually deployed until they have each made contact with the endocardium of the left ventricle. Timed responses are obtained from the probes, and a series of such responses from various guide locations in the left ventricle are recorded to accomplish circumferential endocardial mapping of the heart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.