FIBER-DELIVERED ERBIUM: YAG LASER FOR ANGIOPLASTY

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 7341
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Quantronix Corpon
Po Box 9014, 49 Wireless Boulevard, Smithtown, NY, 11788
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 MARTIN G COHEN PHD
 (516) 273-6900
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A COMMERCIAL MODEL OF AN OPTICALLY PUMPED, PULSED, ER:YAG SOLID-STATE LASER WILL BE MODIFIED AND TESTED FOR BEAM PERFORMANCE AND USED IN CONJUNCTION WITH A COMPATIBLE LOW-LOSS, FLEXIBLE NONTOXIC, FLUORIDE GLASS DELIVERY FIBER TO STUDY IN VITRO TUSSUE INTERACTION EFFECTS. THE LASER OPERATES AT AN APPROXIMATE WAVELENGTH OF 2.94 MUM ON THE 4I11/2-4I13/2 TRANSITION OF TRIVALENT ERBIUM. TISSUE INTERACTION STUDIES AT THIS WAVE-LENGTH, WHICH FALLS AT THE PEAK OF THE STRONG INFRA-RED-ABSORPTION BAND OF WATER, HAVE DEMONSTRATED EFFICIENT, ABLATIVE-TYPE CUTTING WITH MINIMAL THERMAL DAMAGE TO SURROUNDING AREAS. OPTIMIZATION AND REFINEMENT OF THE LASER-TISSUE INTERACTION, IN PARTICULAR AS A FUNCTION OF PULSE ENERGY AND TEMPORAL PROFILE, ARE NOW REQUIRED. INITIAL, DIRECT-FOCUSED BEAM EXPERIMENTS ARE PROPOSED, TO BE FOLLOWED BY TESTING OF COMMERCIALLY AVAILABLE ZIRCONIUM-FLUORIDE GLASS FIBERS FOR LASER DAMAGE AND FOR EFFICACY IN CONTACT TISSUE MACHINING IN VITRO IN A WET FIELD. FAVORABLE RESULTS WILL QUALIFY THE SYSTEM FOR ENDOSCOPIC APPLICATIONS IN GENERAL LASER SURGERY AND, IN PARTICULAR, FOR CATHETER-GUIDED ANGIOPLASTY IN PERIPHERAL AND CORONARY VESSELS. THE EXACTING REQUIREMENTS FOR REMOVAL OF PLAQUE INTHESE LATTER APPLICATIONS DEMAND PRECISION CUTTING, AND THE ER:YAG LASER WOULD APPEAR TO BE UNIQUE IN ITS ABILITY TO PROVIDE THIS INTERACTION VIA A FLEXIBLE FIBER.

* information listed above is at the time of submission.

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