Implantable brachytherapy device having at least partial deactivation capability
First Claim
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1. An implantable brachytherapy device, comprising:
- a) a first container;
b) radioactive means for emitting radiation out of said first container; and
c) activatable radiation reduction means in said container for at least partially reducing the amount of radiation emitted out of said first container in response to an application of an amount of energy to said device.
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Abstract
An implantable brachytherapy device includes a biocompatible outer capsule containing a radiation shielding element and a radioactive isotope between the shielding element and the wall of the outer capsule. When the device is at body temperature, radiation is emitted by the isotope through the wall of the outer capsule. When a predetermined amount of energy is applied to the device, the shielding element is adapted to at least partially surround the isotope, and thereby at least partially prevent the transmission of radiation through the outer capsule.
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Citations
34 Claims
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1. An implantable brachytherapy device, comprising:
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a) a first container; b) radioactive means for emitting radiation out of said first container; and c) activatable radiation reduction means in said container for at least partially reducing the amount of radiation emitted out of said first container in response to an application of an amount of energy to said device. - View Dependent Claims (2, 3, 4, 5)
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6. An implantable brachytherapy device, comprising:
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a) a container having a wall adapted for the transmission of radiation therethrough; b) a radioactive isotope which emits radiation and which is provided in said container; and c) an activatable shield provided in said container for reducing the amount of radiation transmitted through said container when an amount of energy is applied to said device. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An implantable brachytherapy device, comprising:
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a) a biocompatible outer capsule having a wall adapted to transmit radiation therethrough; b) a radiopaque shield located inside said outer capsule; and c) a radioactive isotope located inside said outer capsule, wherein when said device is in a first state, said radioactive isotope emits radiation which is transmitted through said outer capsule, and wherein upon application of a predetermined amount of energy to said device said device enters into a second state in which said radiopaque shield at least partially surrounds said radioactive isotope and reduces the amount of radiation transmitted through said outer capsule. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification