Surgery – Instruments – Light application
Patent
1989-06-20
1991-10-29
Hafer, Robert A.
Surgery
Instruments
Light application
606 15, A61B 1736
Patent
active
050612654
ABSTRACT:
An apparatus for performing ablation upon a patient using laser energy. The apparatus advantageously provides for a laser beam to directly strike the tissue of a patient by having the laser beam pass out an opening in an outer hood. To prevent the apparatus from becoming fouled by burnt red blood cells or other materials, flushing solution is fed under pressure into the interior of the outer hood so as to flow out through the opening. The outer hood may include a plurality of openings and the apparatus may emit more than one laser beam, each laser beam going through a corresponding opening and having the flushing solution provided through the same opening such that the flushing is advantageously provided directly at the location where it is needed. Additionally, an auxiliary opening may be provided without any corresponding laser beam, the auxiliary opening allowing flushing solution to exit therfrom so as to stabilize the positioning of the apparatus within the vessel or other part of the patient. The apparatus includes an optical fiber having a prism which is integral with the optical fiber and used to direct the laser energy in the desired direction. A method of making the apparatus provides for the formation of the prism from the optical fiber.
REFERENCES:
patent: 1791794 (1931-02-01), Chesney
patent: 4273109 (1981-06-01), Enderby
patent: 4445892 (1984-05-01), Hussein et al.
patent: 4448188 (1984-05-01), Loeb
patent: 4512762 (1985-04-01), Spears
patent: 4551129 (1985-11-01), Coleman et al.
patent: 4592353 (1986-06-01), Daikuzono
patent: 4612938 (1986-09-01), Dietrich et al.
patent: 4646737 (1987-03-01), Hussein et al.
patent: 4660925 (1987-04-01), McCaughan, Jr.
patent: 4662368 (1987-05-01), Hussein et al.
patent: 4669467 (1987-06-01), Willett et al.
patent: 4672961 (1987-06-01), Davies
patent: 4676231 (1987-06-01), Hisazumi et al.
patent: 4681104 (1987-07-01), Edelman
patent: 4693244 (1987-09-01), Diakuzono
patent: 4693556 (1987-09-01), McCaughan, Jr.
patent: 4740047 (1988-04-01), Abe et al.
patent: 4784132 (1988-11-01), Fox et al.
patent: 4799479 (1989-01-01), Spears
patent: 4800876 (1989-01-01), Fox et al.
patent: 4832024 (1989-05-01), Boussignac et al.
patent: 4832043 (1989-05-01), Murphy-Chutorian et al.
patent: 4850351 (1989-07-01), Herman et al.
patent: 4860743 (1989-08-01), Abela
"Evaluation of Optical Properties and Laser Effects on Arterial Tissue Using a Microlens Tipped Optical Fiber"--Barbieri et al, SPIE vol. 713, Optical Fibers in Medicine II, 1986.
"Laser Angioplasty with Angioscopic Guidance in Humans", George S. Abela et al, Journal of the American College of Cardiology, vol. 8, No. 1, Jul. 1986:184-92.
"Lasers in Medicine and Surgery", Council on Scientific Affairs, Journal of the American Medical Association, Aug. 15, 1986, vol. 256, pp. 900-907.
"Transvascular Argon Laser-Induced Atrioventricular Conduction Ablation in Dogs", George S. Abela et al, Abstracts on the 56th Scientific Sessions, III-145, 1983.
"The Effect of Laser Radiation on Atheromatous Plaques: A Preliminary Report", G. Abela, M.D. et al., The American Journal of Cardiology, Mar. 1982, vol. 49.
"Use of Laser Radiation to Recanalize Stenosed Arteries in a Live Animal Model", George Abela et al, Abstracts, Circulation vol. 66, Supp II, Oct. 1982.
"Laser Recanalization", George S. Abela, Cardiovascular Disease and Chest Pain, vol. 3, No. 4, Nov. 1987.
"Effects of Carbon Dioxide, Nd-YAG, and Argon Laser Radiation on Coronary Atheromatous Plaques", George S. Abela, M.D. et al, The American Journal of Cardiology, Dec. 1982, vol. 50, pp. 1199-1205.
"Laser Recanalization of Occluded Atherosclerotic Arteries in Vivo and in Vitro," George S. Abela, M.D. et al., Circulation, vol. 71, No. 2, Feb. 1985, pp. 403-411.
"The Healing Process in Normal Canine Arteries and in Atherosclerotic Monkey Arteries After Transluminal Laser Irradiation", George S. Abela, M.D., The American Journal of Cardiology, vol. 56, Dec. 1, 1985, pp. 983-988.
"Development and Early Clinical Applications of a Lateral-aiming Laser Probe", Daijo Hashimoto, Lasers in Medical Science, vol. 2:25, 1987, pp. 25-28.
"Lasers in Biology and Medicine", edited by F. Hillenkamp, R. Pratesi and C. A. Sacchi, NATO Symposium on Lasers in Biology and Medicine, Camaiore, Lucca, Italy, Aug. 19-31, 1979, pp. 29-35.
"A Multifiber Catheter with an Optical Shield for Laser Angiosurgery", R. M. Cothren et al, Lasers in the Life Sciences 1 (1), 1986, pp. 1-12.
"Hot Tip": Another Method of Laser Vascular Recanalization, George S. Abela, M.D. et al, Lasers in Surgery and Medicine, 5:327-335 (1985).
"Percutaneous Laser Recanalization of Totally Occluded Human Peripheral Arteries: A Technical Approach"-George S. Abela et al, Dynamic Cardiovascular Imaging; vol. 1, No. 4; pp. 302-308; 1988.
"Dosimetry of Plaque Ablation Using Thermal and Thermal-Optical Probe Systems", Ross. G. Hoffman et al, SPIE vol. 1067-Optical Fibers in Medicine IV (1989), pp. 120-126.
Abela George S.
Friedl Stephan E.
Hafer Robert A.
Owens Kerry
University of Florida
LandOfFree
Laser treatment apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser treatment apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser treatment apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1397453