Lower-limb prosthesis force and moment transducer
First Claim
1. A transducer, comprising:
- a transducer body;
an adaptor on the transducer body for coupling to a prosthesis;
a beam disposed on each of anterior, posterior, right and left sides of the adaptor, wherein the beams support the adaptor on the transducer body;
a first strain-measuring device on the transducer to measure forces in a first plane; and
a second strain-measuring device on the transducer to measure forces in a second plane substantially orthogonal to the first plane;
wherein the first and the second strain-measuring devices are arranged to reduce measuring forces in a third plane orthogonal to the first and second planes.
2 Assignments
0 Petitions
Accused Products
Abstract
A computerized prosthesis alignment system includes a transducer that can measure socket reactions in the anterior/posterior plane and the right/left planes, while canceling or reducing the transverse forces on the measurements of these socket reactions. In addition, the transducer is also capable of determining the axial load or weight experienced by the prosthesis. The computerized prosthesis alignment system is in communication with a host computer. The moment data from the transducer is interpreted by the user via a computer interface. The host computer includes memory for storing one or more applications. These applications receive data from the transducer, interpret the data with discrete algebraic or fuzzy logic algorithms, and display the output numerically and graphically. Applications may also interpret the data to provide analyses to the user for aligning the prosthesis.
40 Citations
34 Claims
-
1. A transducer, comprising:
-
a transducer body; an adaptor on the transducer body for coupling to a prosthesis; a beam disposed on each of anterior, posterior, right and left sides of the adaptor, wherein the beams support the adaptor on the transducer body; a first strain-measuring device on the transducer to measure forces in a first plane; and a second strain-measuring device on the transducer to measure forces in a second plane substantially orthogonal to the first plane; wherein the first and the second strain-measuring devices are arranged to reduce measuring forces in a third plane orthogonal to the first and second planes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 28, 29, 32)
-
-
10. A transducer, comprising:
-
a transducer body; an adaptor on the transducer body for coupling to a prosthesis; a beam disposed on each of the anterior, posterior, right and left sides of the adaptor, wherein the beams support the adaptor to the transducer body, each beam having a strain-measuring device positioned on each of at least two opposite side surfaces of each beam; a first set of strain-measuring devices configured to measure forces in a first plane; and a second set of strain-measuring devices configured to measure forces in a second plane substantially orthogonal to the first plane; wherein the first and the second sets of strain-measuring devices are arranged to reduce measuring forces in a third plane orthogonal to the first and second planes. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 30, 33)
-
-
18. A transducer, comprising:
-
a transducer body; an inverted pyramid adaptor on the transducer body for coupling to a prosthesis; a first strain-measuring device on the transducer to measure forces in a first plane; and a second strain-measuring device on the transducer to measure forces in a second plane substantially orthogonal to the first plane; wherein the first and the second strain-measuring devices are arranged to reduce measuring forces in a third plane orthogonal to the first and second planes. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 31, 34)
-
Specification