Laser Device Development and Qualification to Enable Laser Tissue Welding

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: 1R43EB012371-01A1
Agency Tracking Number: EB012371
Amount: $175,785.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2010
Solicitation Topic Code: NIBIB
Solicitation Number: PHS2010-2
Small Business Information
DUNS: 103891821
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 (734) 427-4800
Business Contact
Phone: (734) 427-4800
Research Institution
VISOTEK, Inc. is an OEM focusing its RandD and product development on novel diode lasers, systems and components that simplify the use of lasers in commercial, military, medical and research environments. Visotek proposes the development of an improved passively cooled, compact, portable and cost effective 75 Watt, 808nm prototype laser for use in a surgical device developed by Laser Tissue Welding (LTW) , Inc. The laser, in combination with LTW's biomaterials, will provide quick and accurate hemostasis and biliary sealing after liver resection surgery or hepatectomy for benign/primary/secondary liver neoplasms. The specific aim of the work is to demonstrate the feasibility of a prototype surgical laser system and handheld beam delivery optics to enable laser tissue welding for liver repair. In Phase I, Visotek will develop an air cooled. compact, portable and cost effective 75 Watt near-infrared 808 5nm diode laser, with handheld beam delivery optics to deliver the required laser irradiance of 75-150W/cm[2] and fluence of 70-90 J/cm[2] with an 8mm spot size on a tophat beam profile that will efficiently and effectively coagulate albumin-indocyanine green solder used in the LTW process. The technological innovation of the resulting prototype delivered at the end of the Phase I effort is a wavelength stabilized laser system that incorporates passive cooling of the diodes at the required power levels without the use of an external water source or complicated cooling devices. Further innovation is in the development of a prototype handheld optical beam delivery system. In Phase II, Visotek will refine, optimize and validate the laser system and optics. The system weight will be reduced to 10kg., safety critical software will be developed. Laser Tissue Welding is an enhanced surgical capability with a new paradigm. Special areas of unmet clinical need are rapid hemostasis of solid visceral organs (liver/kidney/spleen) involved in trauma, tumors and transplantation and specifically in patients with coagulation failure or therapeutic anticoagulation. Currently the market is dominated by ablative technologies which create coagulative necrosis of gt1cm of normal liver tissues to obtain a hemostatic and biliary seal. Market size is 624,464 patients for liver surgery alone. Market segments yearly growth trends are positive (liver transplant: 11%; cancer: 3% and trauma: 13%). The Company expects to serve 5% or ~31,223 patients in the 1st yr of market penetration (2012) and 30% year over year growth rate. Visotek is an established supplier of customized diode lasers and peripheral components and will become an OEM supplier to Laser Tissue Welding, Inc. for supply of complete LTW systems. Future variants will address other high power medical laser needs.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government