Cryoablation catheter and method of performing cryoablation
US5147355A · kind A · utility
564Cited by
19References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0212
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus is provided for cryogenically ablating a predetermined portion of tissue in the body of a patient. Cryoablation is accomplished by a cryoblation catheter having a hollow shaft insertable into the blood vessel of a patient. The shaft has a closed tip portion and a fluid flow passage for directing a flow of cryogenic fluid to the tip. Cryogenic cooling is effected by a liquid-to-gas fluid phase change adjacent the catheter tip. Electrical signal activity may be monitored by an electrode formed integral with the tip to confirm treatment of the paper tissue site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.