Electrical heating catheter
US5257635A · kind A · utility
141Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a thermal design of a catheter where the active electrode is partially covered by a heat conducting and electrically insulating heat-sink layer for localizing and controlling an electrical heating of tissue and cooling of the active electrode by convective blood flow. The invention further comprises a current equalizing coating for gradual transition of electrical properties at a boundary of a metallic active electrode and an insulating catheter tube. The current equalizing coating controls current density and the distribution of tissue heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.