Method and apparatus for the delivery of brachytherapy
First Claim
1. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
- an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and
a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said radiation source comprises a coil.
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0 Petitions
Accused Products
Abstract
A brachytherapy device includes a radiation source and a multi-cannula delivery system for implantation of the radiation source into a body tissue site. The radiation source may be, for example, a substantially straight round wire, a substantially straight flat wire, a detented wire, an embossed wire, a bristled wire, a shaped resilient wire, a twisted round wire, a twisted flat wire, or a coil with or without an inner core, and is adapted for implantation into a body tissue site and for delivery of radiation to the body tissue site. The multi-cannula delivery system includes an outer cannula, an outer stylet, an inner cannula, and an inner stylet. Different configurations of the radiation source according to embodiments of the invention improve distribution of the radiation field in the longitudinal direction and resistance to migration of the radiation source inside a patient'"'"'s body. The multi-cannula delivery system provides for faster and more accurate placement of the radiation source.
115 Citations
10 Claims
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1. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said radiation source comprises a coil. - View Dependent Claims (2)
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3. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said inner cannula has a distal tip and an outer diameter sufficiently small to fit inside said outer cannula and further comprising an outer stylet having a distal tip and an outer diameter sufficiently small to fit inside said outer cannula.
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4. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said inner cannula has a distal tip and an outer diameter sufficiently small to fit inside said outer cannula and further comprising an inner stylet having a distal tip and an outer diameter sufficiently small to fit inside said inner cannula.
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5. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, further including a multi-cannula delivery system loading device, comprising; a base, a container attached to said base and adapted for dispensing said radiation source therefrom, and a discharge tube attached to said base and adapted for receiving said radiation source dispensed from said container and for loading said radiation source into said multi-cannula delivery system, wherein said container is removably and reusably attached to said base.
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6. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, further including a multi-cannula delivery system loading device, comprising; abase, a container attached to said base and adapted for dispensing said radiation source therefrom, and a discharge tube attached to said base and adapted for receiving said radiation source dispensed from said container and for loading said radiation source into said multi-cannula delivery system, wherein said discharge tube is removably and reusably attached to said base.
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7. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radiation material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein the radiation source is removable from the device by release from an opening in the inner cannula; and a multi-cannula delivery system loading device, comprising;
a base, a container attached to said base and adapted for dispensing said radiation source therefrom, and a discharge tube attached to said base and adapted for receiving said radiation source dispensed from said container and for loading said radiation source into said multi-cannula delivery system, wherein said base further comprises a cutoff scale.
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8. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, further including a multi-cannula delivery system loading device, comprising; a base, a container attached to said base and adapted for dispensing said radiation source therefrom, and a discharge tube attached to said base and adapted for receiving said radiation source dispensed from said container and for loading said radiation source into said multi-cannula delivery system, wherein said discharge tube comprises an actuator and a luer port, said actuator and said luer port adapted for loading said radiation source into said multi-cannula delivery system.
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9. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said implantable radiation source comprises a wire-shaped element comprising a coil.
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10. A brachytherapy device for release of a radiation source within a body tissue site, comprising:
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an implantable radiation source comprising a radioactive material, said radiation source adapted for implantation into a body tissue site and for delivery of a dosage of radiation to said body tissue site; and a multi-cannula delivery system for implantation of said radiation source into said body tissue site, comprising an outer cannula and an inner cannula adapted to fit within the outer cannula wherein said outer cannula and said inner cannula comprise longitudinal openings such that rotation of said inner cannula in relation to said outer cannula causes said longitudinal openings to align and said radiation source is releasable from said multi-cannula delivery system upon alignment of said longitudinal openings, wherein said radiation source comprises a coil, and wherein said coil has an inner core.
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Specification