Surgery – Instruments – Light application
Patent
1989-10-25
1993-03-23
Shay, David M.
Surgery
Instruments
Light application
606 7, 606 15, A61N 506
Patent
active
051960044
ABSTRACT:
Laser energy produced by a laser operating in the mid-infrared region (approximately 2 micrometers) is delivered by an optical fiber in a catheter to a surgical site of biological tissue removal and repair. Disclosed laser sources which have an output wavelength in this region include: Holmium-doped Yttrium Aluminum Garnet (Ho:YAG), Holmium-doped Yttrium Lithium Fluoride (Ho:YLF), Holmium-doped Yttrium-Scandium-Gadolinium-Garnet (HO:YSGG), Erbium-doped YAG, Erbium-doped YLF and Thulium-doped YAG. Laser output energy is applied to a silica-based optical fiber which has been specially purified to reduce the hydroxyl-ion concentration to a low level. The catheter may be comprised of a single optical fiber or a plurality of optical fibers arranged to give overlapping output patterns for large area coverage. In a preferred application for the removal of atherosclerotic plaque, a Holmium-doped laser operating in the wavelength range of from about 1.9 to about 2.1 micrometers is preferred. For removal of such plaque by a Holmium-doped laser, it has been found that the threshold energy density should be greater than about 0.6 joules/mm.sup.2 per pulse, and that the pulse width should be substantially less than about 83 milliseconds, and that the repetition rate should be in the range of from about 1 to about 10 Hertz.
REFERENCES:
patent: 1751584 (1930-03-01), Hansell
patent: 3327712 (1967-06-01), Kaufman
patent: 3769963 (1973-11-01), Goldman et al.
patent: 3884236 (1975-05-01), Krasnov
patent: 3947780 (1976-03-01), Rice et al.
patent: 3983511 (1976-09-01), Fricke
patent: 4110702 (1978-08-01), Chicklis
patent: 4141362 (1979-02-01), Wurster
patent: 4146019 (1979-03-01), Bass et al.
patent: 4170997 (1979-10-01), Pinnow et al.
patent: 4207874 (1980-06-01), Choy
patent: 4233493 (1980-11-01), Nath
patent: 4266548 (1981-05-01), Davi
patent: 4309998 (1982-01-01), Aron nee Rosa et al.
patent: 4321559 (1982-03-01), Esterowitz et al.
patent: 4330763 (1982-05-01), Esterowitz et al.
patent: 4350150 (1982-09-01), Kulota et al.
patent: 4353893 (1982-10-01), Chicklis
patent: 4383729 (1983-05-01), Suzuki et al.
patent: 4386428 (1983-05-01), Baer
patent: 4418688 (1983-12-01), Loeb
patent: 4425503 (1984-01-01), Watkins et al.
patent: 4445418 (1984-05-01), Modone et al.
patent: 4454882 (1984-06-01), Takano
patent: 4458683 (1984-07-01), Saito et al.
patent: 4469098 (1984-09-01), Davi
patent: 4470407 (1984-09-01), Hussein
patent: 4503854 (1985-05-01), Jako
patent: 4504297 (1985-03-01), Kosinski et al.
patent: 4515612 (1985-05-01), Burrus, Jr. et al.
patent: 4538608 (1985-09-01), L'Esperance, Jr. et al.
patent: 4556057 (1985-12-01), Hiruma et al.
patent: 4559942 (1985-12-01), Eisenberg
patent: 4566453 (1986-01-01), Kumano et al.
patent: 4566765 (1986-01-01), Miyauchi et al.
patent: 4572189 (1986-02-01), Smith et al.
patent: 4576177 (1987-03-01), Webster, Jr.
patent: 4641912 (1987-02-01), Goldenberg
patent: 4648892 (1987-03-01), Kittrell et al.
patent: 4654024 (1987-03-01), Crittendon et al.
patent: 4672969 (1987-06-01), Dew
patent: 4685458 (1987-08-01), Leckrone
patent: 4686979 (1987-08-01), Gruen et al.
patent: 4732448 (1988-03-01), Goldenberg
patent: 4750486 (1988-06-01), Butler et al.
patent: 4775361 (1988-10-01), Jacques et al.
patent: 4784132 (1988-11-01), Fox et al.
patent: 4784135 (1988-11-01), Blum et al.
patent: 4799754 (1989-01-01), Goldenberg
patent: 4800876 (1989-01-01), Fox et al.
patent: 4817601 (1989-04-01), Roth et al.
patent: 4819632 (1989-04-01), Davies
patent: 4830460 (1989-05-01), Goldenberg
patent: 4848336 (1989-07-01), Fox et al.
patent: 4850351 (1989-07-01), Herman et al.
patent: 4852567 (1989-08-01), Sinofsky
patent: 4854315 (1989-08-01), Stack et al.
patent: 4878492 (1989-11-01), Sinofsky et al.
patent: 4905689 (1990-03-01), Stack et al.
patent: 4917084 (1990-04-01), Sinofsky
patent: 4929246 (1990-05-01), Sinofsky
patent: 4950266 (1990-08-01), Sinofsky
"Noncontact tissue ablation by holmium: YSGG laser pulses in blood" by Van Leeuwen et al.; Lasers Surg. Med vol. 11, No. 1 1991 pp. 26-34.
"A new cool lens capsulating laser" by Horn et al.; Am Intra-Ocular Implant Soc. J. vol. 8; Fall 1982 pp. 337-342.
Wolbarsht, Myron L., "Interactions Between Material Processing and Surgery", ICALEO, 4/L.I.A., vol. 32 (1982).
Anderson, R. Rox and Parrish, John A., "Microvasculature Can Be Selectively Damaged Using Dye Lasers: A Basic Theory and Experimental Evidence in Human Skin", Lasers in Surgery and Medicine, vol. 1, pp. 263-276 (1981).
Anderson, R. Rox and Parrish, John A., "Selective Photothermolysis: Precise Microsurgery by Selective Absorption of Pulsed Radiation", Science, vol. 220, pp. 524-527, 29 Apr. 1983.
Abela, George S. et al., "Effects of Carbon Dioxide, Nd-YAG, and Argon Laser Radiation on Coronary Atheromatous Plaques", The American Journal of Cardiology, vol. 50, No. 6, pp. 1199-1205, Dec. 1982.
Fraser, A. B. et al., "Pulsed Laser Iridotomy Apparatus", The Johns Hopkins University--Applied Physics Laboratory, Oct. 1977-Sep. 1978.
Garrett Lee et al., Current and Potential Uses of Lasers In The Treatment of Of Atherosclerotic Disease, Chest, vol. 85, No. 3, Mar., 1984 pp. 429-434.
Garrett Lee et al., Limitations, Risks and Complications of Laser Recanalization: A Cautious Approach Warranted, The American Journal of Cardiology, vol. 56, Jun. 1, 1985, pp. 181-185.
H. Ward, Laser Recannalization of Atheromatous Vessels Using Fiber Optics, Lasers in Surgery and Medicine 4; 353-363 (1984).
Paul E. McGuff, et al., Studies of the Surgical Applications of Laser Light (Light Amplification by Stimulated Emission of Radiation), Surgical Form, vol. XIV, American College of Surgeons, Chicago, Ill. (1963).
Leon Goldman, et al., The Biomedical Laser: Technology And Clinical Applications, (1981).
Ed Sinofsky, Comparative Thermal Modeling of Er:YAG, Ho:YAG and CO2 Laser Pulses For Tissue Vaporization, Proceedings to SPIE-The Inernational Society For Optical Engineering, vol. 712, Lasers in Medicine (1986), pp. 188-192.
L. Deckelbaum, et al., Reduction of Laser Inducted Pathological Tissue Injury Using Post-Energy Delivery, vol. 56, Oct. 1, 1985, pp. 662-667.
M. Motamedi, et al., Interaction of Laser Raidation with Plaque and Vessel Wall, ICALEO'84, Technical Digest.
E. Sinofsky, et al., Measurement of Argon Laserbeam Spreading Through Arterial Plaque, Lasers in the Life Sciences, 1(2), 1986, pp. 143-150.
L. Esterowitz, et al., Angioplasty with a Laser and Fiber Optics at 2.9 um, SPIE Conference, Jan. 1986, Los Angeles, Calif.
Beckman, et al., Limbectomies, Keratectomies, And Keratostomies Performed With A Rapid-Published Carbon Dioxide Laser, Am, J. Ophthal vol. 71, No. 6, Jun. 1971, pp. 1277-1283.
H. Fugii, et al., Fibre Bundle Scanner For Laser Photocoagulation Treatment, Optics & Laser Technology Feb. 82 pp. 38-40.
The happy merger of fiber optics and lasers; David N, Kay; Information Retrieval No. 22; News RT 167 Electronic Design, vol. 17 Jun. 21, 1969.
Solid State Laser Engineering; Springer-Verlag New York Heidelberg Berlin 1976; Walter Koechner.
C. R. Bard Inc.
Shay David M.
LandOfFree
Infrared laser catheter system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Infrared laser catheter system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared laser catheter system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1348750