Measurement device for the muscular-skeletal system having alignment features
First Claim
1. A measurement device configured to measure a force, pressure, or load applied by a musculoskeletal system comprising:
- a first support structure having a first surface;
a unitary circuit board wherein electronic circuitry coupled to the unitary circuit board is configured to control a measurement process and to transmit measurement data;
a second support structure having a surface wherein the first and second support structures couple together to form a housing;
a first load plate having a first major surface and a second major surface wherein the first major surface of the first load plate couples to an interior surface of the second support structure;
a second load plate having a first major surface and a second major surface wherein the first major surface of the second load plate couples to an interior surface of the first support structure;
a plurality of sensors coupled between the second major surface of the second load plate and the second major surface of the first load plate such that musculoskeletal loading applied to the first surface of the first support structure compresses at least one of the plurality of sensors and wherein the reference sensor remains unloaded when the at least one of the plurality of sensors is compressed by musculoskeletal loading.
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Accused Products
Abstract
A measurement device suitable to measure a load applied by the muscular-skeletal system is disclosed. The measurement device can be a prosthetic component having an articular surface for measuring parameters of a joint in extension or flexion. A first and second support structure forms an enclosure having load-bearing surfaces. The first support structure includes at least one alignment feature extending from a surface. The second support structure includes a corresponding opening for receiving the alignment feature. The first and second support structures include a peripheral channel and corresponding flange to support sealing of the enclosure. Interior to the enclosure is the measurement system. The alignment feature couples through and aligns a first load plate, a sensor array, and a second load plate to surfaces of the first and second support structures. The sensor array is coupled to electronic circuitry in the enclosure via a unitary circuit board.
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Citations
20 Claims
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1. A measurement device configured to measure a force, pressure, or load applied by a musculoskeletal system comprising:
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a first support structure having a first surface; a unitary circuit board wherein electronic circuitry coupled to the unitary circuit board is configured to control a measurement process and to transmit measurement data; a second support structure having a surface wherein the first and second support structures couple together to form a housing; a first load plate having a first major surface and a second major surface wherein the first major surface of the first load plate couples to an interior surface of the second support structure; a second load plate having a first major surface and a second major surface wherein the first major surface of the second load plate couples to an interior surface of the first support structure; a plurality of sensors coupled between the second major surface of the second load plate and the second major surface of the first load plate such that musculoskeletal loading applied to the first surface of the first support structure compresses at least one of the plurality of sensors and wherein the reference sensor remains unloaded when the at least one of the plurality of sensors is compressed by musculoskeletal loading. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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10. The measurement device of 1 wherein each sensor of the first plurality of sensors are identical and wherein the reference sensor is identical to the first plurality of sensors.
Specification