Angioplastic technique employing an inductively-heated ferrite material
US5098429A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Apr 17, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00422
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed are three forms of an angioplastic instrument employing a ferrite material inductively-heated from outside a patient's body to soften plaque occluding a lumen of a vas of the patient. In a first form, the angioplastic instrument is comprised solely of a thin guide wire having a ferrite-coated tip at its distal end. Each of the other two forms of the angioplastic instrument heats the liquid filling the balloon of an angioplastic balloon catheter with the inductively-heated ferrite material. By utilizing ferrite materials having different Curie temperatures, the amount of heating can be adjusted for a particular treatment protocol. Also, by limiting the value of the Curie temperature of the ferrite material to a safe value, the tissue underlying the vas is inherently protected from undue injury due to overheating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.