Expandable and retrievable radiation delivery system
US5865720A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Mar 6, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device and method for irradiating human body vessel interior walls. One device includes a beta radiation emitting segmented metal tube disposed at the distal end of an elongate shaft. Another device includes a radioactive elastic sleeve mounted on a shaft. The device can be used to inhibit restenosis following angioplasty in coronary arteries. In use, the device can be advanced distally over the balloon portion of a positioned and deflated angioplasty balloon catheter, whereupon the balloon is inflated, pressing the radiation device into close contact with vessel walls. After a desired exposure period, the balloon is deflated, and the device, biased to contract, contracts with the balloon, allowing for ease of withdrawal from the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.