Radiation delivery system utilizing intravascular ultrasound
US6416492B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jan 9, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1048
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radiation delivery system including a catheter shaft having a distal head. A fixed or removable radiation source is disposed adjacent the distal head. The distal head includes a radiation shield having a window and an ultrasonic transducer. The ultrasonic transducer provides a signal indicative of relative position, tissue geometry and/or tissue characteristics, which may be utilized to determine the appropriate placement of the radiation shield window such that only selected portions of the treatment site are exposed to radiation. The radiation delivery system may include a drive means coupled to the distal head to facilitate rotation thereof. The rotatable head may be rotated at a constant velocity or at a velocity which varies as a function of the signal (e.g., distance from the vascular wall and/or stenotic thickness).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.