Method and system for fiducials contained in removable device for radiation therapy
First Claim
1. An implantable device for guided radiation therapy, comprising:
- a removable implantable device having a first portion configured to be implanted in tissue of a patient and opposing end portions configured to remain external to the patient on two sides of a resection cavity, wherein the first portion includes a predefined cavity extending from one of the opposing end portions to another of the opposing end portions;
an active marker contained within the predefined cavity of the first portion, the marker having a circuit configured to transmit a wirelessly transmitted location signal from within the patient, wherein the marker is configured to be received in the predefined cavity via one of the opposing end portions;
a first fastener coupled to one of the opposing end portions of the removable implantable device and having a portion configured to be external to the patient at least proximate to a dermis of the patient; and
a second fastener coupled to another of the opposing end portions of the removable implantable device and having a portion configured to be external to the patient at least proximate to a dermis of the patient, wherein the first and second fasteners are configured to place the removable implantable device under tension between the opposing end portions to adjust for shrinkage or expansion of the resection cavity, and wherein the removable device, the active marker, and the first and second fasteners are configured to remain implanted in the patient during external beam radiation therapy.
2 Assignments
0 Petitions
Accused Products
Abstract
Method and system fiducials contained in removable a device for use in guided radiation therapy treatment. One embodiment includes an active marker configured to be pre-loaded into a catheter for removeably implanting in the tissue of a patient. Another embodiment of the implantable device includes a stability element coupled to the marker and further coupled to an explant line. In some embodiments, the stability element is configured to hold the marker at a fixed location within the catheter (e.g., known location) with respect to a target in the tissue. In other embodiments, the explant line has a first portion coupled to the marker and/or the stability element and a second portion configured to be at least proximate to the dermis of the patient.
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Citations
15 Claims
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1. An implantable device for guided radiation therapy, comprising:
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a removable implantable device having a first portion configured to be implanted in tissue of a patient and opposing end portions configured to remain external to the patient on two sides of a resection cavity, wherein the first portion includes a predefined cavity extending from one of the opposing end portions to another of the opposing end portions; an active marker contained within the predefined cavity of the first portion, the marker having a circuit configured to transmit a wirelessly transmitted location signal from within the patient, wherein the marker is configured to be received in the predefined cavity via one of the opposing end portions; a first fastener coupled to one of the opposing end portions of the removable implantable device and having a portion configured to be external to the patient at least proximate to a dermis of the patient; and a second fastener coupled to another of the opposing end portions of the removable implantable device and having a portion configured to be external to the patient at least proximate to a dermis of the patient, wherein the first and second fasteners are configured to place the removable implantable device under tension between the opposing end portions to adjust for shrinkage or expansion of the resection cavity, and wherein the removable device, the active marker, and the first and second fasteners are configured to remain implanted in the patient during external beam radiation therapy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for tracking a target site in a patient after a procedure that leaves a resection cavity within the patient, the method comprising:
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inserting a portion of an implantable device into the resection cavity, wherein the implantable device has opposing end portions and is configured to remain implanted in the patient during external beam radiation therapy, wherein inserting the portion of the implantable device into the resection cavity comprises passing the implantable device through the resection cavity such that the opposing end portions of the implantable device are positioned external to the patient on two sides of the resection cavity, and wherein the implantable device is under tension between the opposing end portions to adjust for shrinkage or expansion of the resection cavity, inserting an active marker affixed to a first portion of an explant line into a lumen of the implantable device after the implantable device has been implanted in the patient such that the active marker is positioned at least proximate to the resection cavity, wherein the explant line has a second portion configured to extend outside the patient after the active marker and the first portion of the explant line are implanted; and localizing the active marker positioned within the patient relative to the implantable device by transmitting a non-ionizing location signal from the active marker and calculating a position of the active marker in an external coordinate system based on the location signal.
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14. A method for tracking a target site in a patient after a procedure that leaves a resection cavity within the patient, the method comprising:
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passing an implantable device through the resection cavity such that opposing end portions of the implantable device are positioned external to the patient on two sides of the resection cavity and a portion of the implantable device is in the resection cavity, wherein the implantable device is under tension between the opposing ends to adjust for shrinkage or expansion of the resection cavity, and wherein the implantable device is configured to remain implanted in the patient during external beam radiation therapy; inserting an active marker into a lumen of the implantable device after the implantable device has been implanted in the patient such that the active marker is positioned at least proximate to the resection cavity; and localizing the active marker positioned within the patient relative to the implantable device by transmitting a non-ionizing location signal from the active marker and calculating a position of the active marker in an external coordinate system based on the location signal. - View Dependent Claims (15)
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Specification