Device and method for endovascular treatment for causing closure of a blood vessel

摘要

An endovascular treatment method for causing closure of a blood vessel is provided. The method includes inserting into a blood vessel an optical fiber having a core through which a laser light travels and a spacer sleeve arranged around a distal portion of the core. A distal end of the core defines an enlarged light emitting face, which advantageously provides substantially lower power density while providing the same amount of total energy during a treatment session. After the insertion, laser light is applied through the light emitting face while the inserted optical fiber and spacer sleeve are longitudinally moved. The spacer sleeve positions the light emitting face away from an inner wall of the blood vessel and application of the laser light causes closure of the blood vessel.

主权项

1. An endovascular treatment method for causing closure of a varicose vein comprising:
inserting into a varicose vein an optical fiber having a core through which a laser light travels, wherein:
the core has a proximal portion surrounded directly by a first cladding layer and a distal portion disposed distally of the proximal portion and surrounded directly by a second cladding layer that is different than the first cladding layer;a sleeve is arranged around the distal portion of the core; anddistal ends of the sleeve and the optical fiber core distal portion form an enlarged light emitting face, the first cladding layer positioned proximally of the second cladding layer, the second cladding layer extending proximally from the enlarged light emitting face; and applying the laser light through the enlarged light emitting face while longitudinally moving the inserted optical fiber, the application of the laser light causing closure of the varicose vein.