Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Reexamination Certificate
2007-06-19
2007-06-19
Marmor, II, Charles A. (Department: 3735)
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
C600S561000, C073S081000
Reexamination Certificate
active
11453292
ABSTRACT:
A system and method are disclosed for noninvasively diagnosing limb compartment syndrome by measuring a quantitative modulus of hardness. In the preferred embodiment, a nonmovable pressure probe mounted in the center of a movable spring loaded platform is applied against a limb compartment. Force is gradually applied to the probe and the platform, compressing a limb compartment. Pressure on the probe is measured as the probe pushes into the limb. The spring loaded platform displaces, and the distance of the probe tip to the platform is measured. This distance is the depth of compression into the limb by the probe. The relationship of incremental pressures in the probe and the corresponding distance of the probe tip to the platform for each pressure is plotted. A linear regression analysis is performed whose slope forms a quantitative modulus of hardness.
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Ostrander and Lee, “Testing Viscoelastic Properties of Biological Soft Tissue”, VA Medical Center, Castle Point, NY 12511, pp. 107-109.
Joseph, “Measurement of tissue hardness: can this be a method of diagnosing compartment syndrome noninvasively in children?” Journal of Pediatric Orthop. B 2006, pp. 443-448.
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Holland & Knight LLP
Hopkins Christine D.
Marmor, II Charles A.
NCSE, LLC
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