Device and method for quantifying edema
First Claim
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1. An edema measurement device comprising:
- a handheld housing including a battery that provides power to the device;
a displacement member attached to the housing that is actuated to displace edematous tissue of a patient to a displaced position relative to the housing; and
a sensor in the housing that measures displacement of the displacement member as a function of time such that the sensor measures displacement of the edematous tissue during relaxation from the displaced position, the sensor generating tissue relaxation displacement data indicative of a level of edema in the tissue.
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Abstract
The preferred embodiments of the present invention are directed at a device that provides a reliable, accurate and quantifiable measure of a patient'"'"'s edema. The device improves on the current method of digital manipulation by evaluating the pitting phenomena in a user-independent manner. The output of the device allows a physician to categorize edema into at least ten different levels of severity. The systems of the present invention provides the ability to distinguish between tissues of varying viscosity.
29 Citations
25 Claims
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1. An edema measurement device comprising:
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a handheld housing including a battery that provides power to the device; a displacement member attached to the housing that is actuated to displace edematous tissue of a patient to a displaced position relative to the housing; and a sensor in the housing that measures displacement of the displacement member as a function of time such that the sensor measures displacement of the edematous tissue during relaxation from the displaced position, the sensor generating tissue relaxation displacement data indicative of a level of edema in the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An edema measurement device comprising:
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a handheld housing including a displacement circuit and a battery that provides power to the device; a displacement member attached to the housing that is actuated to displace edematous tissue of a patient to a displaced position relative to the housing; depressor mounted to the housing that manually displaces the displacement member; and a sensor in the housing that is connected to the displacement circuit that measures displacement of the displacement member as a function of time such that the sensor measures displacement of the edematous tissue during relaxation from the displaced position, the displacement circuit generating tissue relaxation displacement data indicative of a level of edema in the tissue. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification