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US 2018/0021552 A1Published application
Methods and devices for treatment of stenosis of arteriovenous fistula shunts
AssigneeRa Medical Systems, Inc.
InventorsJames B. LAUDENSLAGER, Dean S. IRWIN
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Abstract
Devices and methods are discussed directed to the use of a low profile laser ablation catheter for use in laser ablation removal of arterial plaque blockages to restore blood flow in the treatment of arteriovenous fistulas. Also discussed are devices and methods directed to packaging, long term storage and sterilization of liquid core ablation catheters.
Claims5
A method of treating an arteriovenous fistula of a patient, comprising:
- emitting pulsed ultraviolet laser ablation energy from a XeCl excimer laser at a nominal output wavelength of about 308 nm and a repetition rate of less than about 100 Hz into an input end of an ablation catheter;
- transmitting the pulsed ultraviolet laser ablation energy through the ablation catheter;
- axially advancing and guiding a distal end of the ablation catheter through a blockage that is disposed within or adjacent the arteriovenous fistula while emitting the pulsed ultraviolet laser ablation energy from an active emitting surface of the distal end of the ablation catheter while ablating and debulking the blockage, and
- treating the blockage with a drug eluting balloon catheter after the distal end of the ablation catheter has traversed the blockage to improve long term patency of a lumen through the blockage.
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Dependencies are inferred from the claim text.