Prosthetic foot with an adjustable ankle and method
First Claim
1. An adjustable ankle device for a prosthetic foot, comprising:
- a) an upper portion configured to be coupled to a socket of an amputee;
b) a lower portion, adjustably coupled to the upper portion, configured to be attached to a foot member; and
c) a movable coupling, disposed between the upper and lower portions, having a projection slidable in an arcuate slot oriented fore and aft, and defining an arcuate displacement path, such that the projection is constrained to slide fore and aft along the arcuate movement path, to restrict movement to;
i) simultaneously in a downward and forward direction in which the lower portion simultaneously pivots downward and displaces forward relative to the upper portion; and
ii) simultaneously in a rearward and upward direction in which the lower portion simultaneously pivots upward and displaces rearward relative to the upper portion.
10 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic foot with an adjustable ankle includes an upper portion coupled to a socket of an amputee. A lower portion is adjustably coupled to the upper portion, and is attached to a foot member with heel and toe sections. A movable coupling is disposed between the upper and lower portions, and includes a displacement member slidably coupled to a displacement track. The movable coupling allows the toe section to pivot downward and the heel section to simultaneously displace forward. The adjustable ankle can be adjusted with an actuator coupled to a tractor bolt coupled between the upper and lower portions. A sensor is associated with the upper portion or the lower portion to sense frequency of contact, force of contact, or orientation of the upper portion or the lower portion, and to output a corresponding output signal.
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Citations
20 Claims
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1. An adjustable ankle device for a prosthetic foot, comprising:
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a) an upper portion configured to be coupled to a socket of an amputee;
b) a lower portion, adjustably coupled to the upper portion, configured to be attached to a foot member; and
c) a movable coupling, disposed between the upper and lower portions, having a projection slidable in an arcuate slot oriented fore and aft, and defining an arcuate displacement path, such that the projection is constrained to slide fore and aft along the arcuate movement path, to restrict movement to;
i) simultaneously in a downward and forward direction in which the lower portion simultaneously pivots downward and displaces forward relative to the upper portion; and
ii) simultaneously in a rearward and upward direction in which the lower portion simultaneously pivots upward and displaces rearward relative to the upper portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A prosthetic foot device with an adjustable ankle, comprising:
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a) an attachment member configured to be coupled to a socket of an amputee;
b) a foot member, coupled to and adjustable with respect to the attachment member, and being constrained to fore and aft arcuate displacement with respect to the upper portion, simultaneously in;
i) a downward and forward direction in which the toe section pivots downward and the heel portion simultaneously displaces forward with respect to the attachment member; and
ii) a rearward and upward direction in which the toe section pivots upward and the heel portion simultaneously displaces rearward with respect to the attachment member;
c) an actuator, coupled to the movable coupling, to move the upper and lower portions with respect to one another;
d) a sensor, associated with the upper portion or the lower portion, to sense frequency of contact, force of contact, or orientation of the upper portion or the lower portion, and to output a corresponding output signal; and
e) a controller, coupled to the actuator and the sensor, to process the output signal of the sensor and engage the actuator in response to the output signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification