Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Patent
1996-01-16
1998-08-11
Hindenburg, Max
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
606 59, A61B 5103
Patent
active
057920761
ABSTRACT:
Apparatus for measuring bone strain to detect fracture consolidation includes a fixation device which is affixed to a patient's bone that has a fracture site to be healed and wherein the fixation device supports an elongated optical fiber. Light is transmitted through the optical fiber to an exit point. The light intensity within the optical fiber is measured, preferably at the exit point as the light travels through the optical fiber. Light intensity is measured to monitor strain in the fixation device as the fracture site heals. A physician then determines when the site has fully healed by observing changes in light intensity as the patient's bone rather than the fixation device carries more of the patient's normal body loading.
REFERENCES:
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patent: 4841778 (1989-06-01), Butler et al.
patent: 4913137 (1990-04-01), Azer et al.
patent: 5454810 (1995-10-01), Pohl et al.
Orsak James E.
Salehi Abraham B.
Hindenburg Max
Smith & Nephew Inc.
Wingood Pamela L.
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