Therapeutic system with energy application device and programmed power delivery
First Claim
1. A blood vessel therapy system comprising:
- an energy application device comprising an electrically insulated heating coil suitable for insertion into a hollow anatomical structure, the electrically insulated heating coil configured to prevent electrical contact and electrical conduction with tissue and configured to engage a blood vessel for heat conduction with tissue;
a power source in communication with said energy application device, said power source comprising a processor and program instructions executable by said processor such that said power source is operable to;
(a) deliver power to said heating coil during a first power delivery phase;
(b) measure time elapsing during power delivery;
(c) assess performance of said therapy system during said first power delivery phase;
(d) if said performance of said therapy system during said first power delivery phase is satisfactory, deliver a decreasing amount of power to said heating coil during a second power delivery phase; and
(e) cease power delivery in preparation for movement within the blood vessel to a new treatment segment in the blood vessel;
the electrically insulated heating coil being elongate and configured for discrete segmental movement within the blood vessel; and
the power source configured to receive an input from a user and further operable to;
(f) deliver power to said heating coil during a third power delivery phase upon input from the user, the third power delivery phase configured to be after movement of the therapy system within the blood vessel; and
(g) if said operation of said heating coil during or after said third power delivery phase is acceptable, deliver power to said heating coil after said third power delivery phase during a fourth power delivery phase.
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Accused Products
Abstract
A working end of a catheter includes at least one therapeutic element, such as a resistive heating element, usable to deliver energy for ligating, or reducing the diameter of, a hollow anatomical structure. In certain examples, the catheter includes a lumen to accommodate a guide wire or to allow fluid delivery. In certain embodiments, a balloon is inflated to place resistive element(s) into apposition with a hollow anatomical structure and to occlude the structure. Indexing devices and methods are also disclosed for successively treating portions of the hollow anatomical structure. In certain examples, marks along the catheter shaft provide visual verification to the physician of the relative position of the therapeutic element of the catheter. Embodiments of indexing devices may include pairs of rings and/or hinged arms that move a catheter a desired indexed position between successive treatments.
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Citations
35 Claims
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1. A blood vessel therapy system comprising:
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an energy application device comprising an electrically insulated heating coil suitable for insertion into a hollow anatomical structure, the electrically insulated heating coil configured to prevent electrical contact and electrical conduction with tissue and configured to engage a blood vessel for heat conduction with tissue; a power source in communication with said energy application device, said power source comprising a processor and program instructions executable by said processor such that said power source is operable to; (a) deliver power to said heating coil during a first power delivery phase; (b) measure time elapsing during power delivery; (c) assess performance of said therapy system during said first power delivery phase; (d) if said performance of said therapy system during said first power delivery phase is satisfactory, deliver a decreasing amount of power to said heating coil during a second power delivery phase; and (e) cease power delivery in preparation for movement within the blood vessel to a new treatment segment in the blood vessel; the electrically insulated heating coil being elongate and configured for discrete segmental movement within the blood vessel; and the power source configured to receive an input from a user and further operable to; (f) deliver power to said heating coil during a third power delivery phase upon input from the user, the third power delivery phase configured to be after movement of the therapy system within the blood vessel; and (g) if said operation of said heating coil during or after said third power delivery phase is acceptable, deliver power to said heating coil after said third power delivery phase during a fourth power delivery phase. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A blood vessel therapy system comprising:
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a heat delivery device comprising an electrically insulated heating element suitable for insertion into a blood vessel, the electrically insulated heating element configured to prevent electrical contact and electrical conduction with tissue; a power source in communication with said heat delivery device, said power source being programmed to; (a) deliver power to said heating element during a temperature ramp-up phase; (b) measure time elapsing during power delivery; (c) monitor operation of said heat delivery device; and (d) if said operation of said heating element either during or after said temperature ramp-up phase is acceptable, deliver a decreasing amount of power to said heat delivery device after said temperature ramp-up phase and maintain said heating element within a constant temperature range. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A method of treating a blood vessel, said method comprising:
inserting a heat delivery device into a blood vessel comprising an electrically insulated heating element configured to prevent electrical contact and electrical conduction with tissue, and while within the blood vessel; delivering power to said heating element during a temperature ramp-up phase; measuring time elapsing during power delivery; monitoring operation of said heat delivery device; if said operation of said heat delivery device during or after said temperature ramp-up phase is acceptable, delivering power to said heating element after said temperature ramp-up phase during a temperature maintenance phase; suspending power delivery after said temperature maintenance phase; moving the heat delivery device to a new location within the blood vessel; delivering power to said heating element during a subsequent temperature ramp up phase after said moving of said heat delivery device to said new location within the blood vessel; and if said operation of said heating element during or said subsequent temperature ramp-up phase is acceptable, delivering power to said heating element after said subsequent temperature ramp-up phase during a subsequent temperature maintenance phase. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
Specification