Apparatus and method for radiotherapy using a radioactive source

Details Apparatus and method for radiotherapy using a radioactive source Apparatus and method for radiotherapy using a radioactive source

1997-12-17

1999-09-28

Gilbert, Samuel

Surgery

Radioactive substance applied to body for therapy

Radioactive substance placed within body

A61N 500

Patent

active

059578297

ABSTRACT:
A radiotherapy apparatus is disclosed in which a radioactive-tipped source wire is accurately and precisely positioned within an implantable catheter. Embedded within the source wire, adjacent to its distal tip, is a ferrous ball, and a special magnetic sensor assembly is configured to sense the retraction of the source wire to a predetermined home position by sensing the proximity of the embedded ferrous ball.

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