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Acoustic Device for Spine Surgery

Award Information
Agency: Department of Health and Human Services
Branch: National Institutes of Health
Contract: 1R41AR055834-01
Agency Tracking Number: AR055834
Amount: $78,988.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N/A
Solicitation Number: PHS2007-2
Solicitation Year: 2008
Award Year: 2008
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
United States
DUNS: 791108868
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 () -
Business Contact
Phone: (818) 399-9538
Research Institution

DESCRIPTION (provided by applicant): An Acoustic Device for Preventing Spine Surgery Complications A specific and immediate concern arises in spine surgery, where an inserted instrument can damage the structures around the spine. For example, a device can
be advanced too far into the vertebral body, and can cause damage to the nearby spinal cord and spinal nerve roots. These complications occur despite the use of a variety of approaches that image the spine in order to ascertain instrument tip location, but
require intra-operative patient exposure to ionizing radiation, usually in the form of radiographs, fluoroscopy, and computerized axial tomography scans. We propose to conduct a feasibility study to explore and develop a dynamic real- time interactive dev
ice insertion system based on quantitative ultrasound, in conjunction with A-mode and B-mode imaging, as a means by which to achieve proper guidance and positioning of the instrument. Such a system does not require any ionizing radiation. The study involve
s the conduct of experiments to acoustically determine the elastic properties of bone. In both cortical and cancellous bone, in vitro experiments are conducted on acoustic scattering, attenuation losses, elastic moduli, and the velocity of sound. Experimen
ts are conducted to determine the optimal transducer characteristics that will provide satisfactory imaging results in bone. Ex vivo experiments are also performed on excised animal vertebral bodies and intact spines. Additional experiments will be perform
ed to develop imaging criteria for distinguishing between marrow and cortex, as to what constitutes proper instrument positioning, when a complication has occurred, and how to detect the presence of imaging artifacts. PROJECT NARRATIVE The relevance of thi
s study to public health is that the proposed acoustic device can improve the efficacy and safety of spine surgery procedures. The proposed acoustic device can guide the surgical instrument, reduce the need for ionizing radiation, and reduce complications.

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

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