US2008161633A1PendingUtilityA1
Expandable Brachytherapy Device with Constant Radiation Source Spacing
Assignee: NORTH AMERICAN SCIENTIFIC INCPriority: Dec 28, 2006Filed: Feb 26, 2008Published: Jul 3, 2008
Est. expiryDec 28, 2026(~0.4 yrs left)· nominal 20-yr term from priority
A61N 5/1015A61N 2005/1018
51
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Claims
Abstract
A brachytherapy device may include an expandable outer cage, an expandable inner cage positioned within the outer cage and configured to receive radioactive material at its perimeter, and a movable actuator configured to cause the outer and inner cages to expand simultaneously in response to movement of the actuator between certain positions while maintaining a substantially constant separation distance between the outer and inner cages.
Claims
exact text as granted — not AI-modified1 . A brachytherapy device comprising: an expandable outer cage; an expandable inner cage positioned within the outer cage and configured to receive radioactive material at its perimeter; and a movable actuator configured to cause the outer and inner cages to expand simultaneously in response to movement of the actuator between certain positions while maintaining a substantially constant separation distance between the outer and inner cages.
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