Annular electromagnetic radiation applicator for biological tissue, and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 31, 1984
Grant Date -
N/A
app pub date -
Apr 2, 1980
filing date -
Apr 2, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is described for selecting an electromagnetic radiation (EMR) frequency causing substantially uniform heating in cylindrical biological tissue specimens, having a typical cross-sectional dimension, d, and known electrical properties, by an annular applicator configured for applicator-specimen impedence matching. Accordingly, an annular applicator system (10) comprises an EMR source (32) having a selected frequency wavelength in a specimen (20) between two-thirds and twice the specimen dimension, d. Connected to the source (32) is an annular applicator apparatus (12) formed of four applicator segments (16), circumferentially arranged to form an axial specimen receiving opening (18). A composite EMR emitting aperture (22), formed around the opening (18) has an axial height to circumferential width ratio causing matching, at the selected frequency, between a characteristic impedance of the apparatus (12) and a load impedance of the specimen (20) as seen through the aperture. A line splitter (36) enables parallel EMR connection of the segments (16) to the source (32). Two variation annular apparatus (200) and (252) are described.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully