Expandable brachytherapy device with constant radiation source spacing
First Claim
Patent Images
1. A brachytherapy device comprising:
- an expandable outer cage formed with a plurality of arms when expanded includes open space between the arms;
an expandable inner cage positioned within the outer cage and at least one of the arms having a lumen adapted 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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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.
16 Citations
20 Claims
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1. A brachytherapy device comprising:
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an expandable outer cage formed with a plurality of arms when expanded includes open space between the arms; an expandable inner cage positioned within the outer cage and at least one of the arms having a lumen adapted 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A brachytherapy device comprising:
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an expandable outer compartment; an expandable inner compartment positioned within the outer compartment and configured to support radioactive material at its perimeter; and a movable actuator configured to cause the outer and inner compartments to expand simultaneously in response to movement of the actuator between certain positions while maintaining a substantially constant and non-zero separation distance between. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification