Delivery system and method for interstitial radiation therapy using strands constructed with extruded strand housings
First Claim
1. A method for embedding radioactive seed elements in a material comprising:
- extruding a member with a bore from the material; and
loading said bore of said member with the radioactive seed elements to space the radioactive seed elements at variable positions;
wherein the loading step occurs simultaneously with the extruding step.
8 Assignments
0 Petitions
Accused Products
Abstract
A delivery system and method for interstitial radiation therapy comprising substantially axially stiff and longitudinally flexible elongated members made of material which is bioabsorbable in living tissue and a plurality of radioactive seeds dispersed in a predetermined array within the elongate member. The radioactive seeds can be dispersed within assembled half-shells made of the same material. The housing for the radiation seeds can also be manufactured from extruded material. A system for manufacturing the interstitial radiation therapy seed strands that automatically makes the seed strands at the patient'"'"'s bedside. The delivery system and method further customize the member based on a prescription.
111 Citations
28 Claims
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1. A method for embedding radioactive seed elements in a material comprising:
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extruding a member with a bore from the material; and loading said bore of said member with the radioactive seed elements to space the radioactive seed elements at variable positions; wherein the loading step occurs simultaneously with the extruding step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for making an interstitial radiation therapy seed strand comprising:
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extruding an elongate member with a bore from a material that is axially rigid and radially flexible when loaded with radioactive seed elements; and inserting said radioactive seed elements into said bore at variable positions using a seed pusher; wherein the inserting step occurs simultaneously with the extruding step. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for embedding radioactive seed elements in a material comprising:
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extruding a member with a bore from the material; and loading said bore of said member with the radioactive seed elements using a seed pusher to space the radioactive seed elements at variable positions; wherein the loading step occurs simultaneously with the extruding step.
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21. A method for embedding radioactive seed elements in a material comprising:
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providing a system comprising; a mandrel; a piston; and a die; extruding a member with a bore from the material; and loading the bore of the member with the radioactive seed elements using a seed pusher to space the radioactive seed elements at variable positions; wherein the extruding step further comprises applying pressure to the material with the piston to extrude the material over the mandrel and through the die, forming the member with a bore therethrough; and wherein the extruding and loading steps are performed simultaneously.
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22. An extrusion method for embedding radioactive seed elements in a material comprising:
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providing a system comprising; a seed pusher; a mandrel; a piston; and a die; extruding the material over the mandrel and through the die with the piston, wherein the piston is used to apply pressure to the material, to create an elongate axially stiff and radially flexible hollow member comprising a bore; and loading the radioactive seed elements into the bore according to a pre-operative plan customized to a patient, the loading step including use of the seed pusher; wherein the extruding step and the loading step are simultaneously performed using the system provided in the providing step. - View Dependent Claims (23, 24)
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25. An extrusion method for embedding radioactive seed elements in a material comprising:
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providing a system comprising; a mandrel; a piston; and a die; extruding the material over the mandrel and through the die with the piston, wherein the piston is used to apply pressure to the material, to create an elongate hollow member comprising a bore; and loading the radioactive seed elements into the bore according to a pre-operative plan customized to a patient; wherein the loading step occurs simultaneously with the extruding step. - View Dependent Claims (26, 27, 28)
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Specification