Prosthetic device for joints
First Claim
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1. A prosthetic device as a replacement for knuckle joints, intermediate and outer joints of fingers, and wrist joints of the fingers and hands for implantation in humans and animals, the device comprising:
- two fixing elements which are each adapted to be connected to adjoining bone parts; and
a joint body arranged between the two fixing elements, the joint body consisting essentially of two essentially helical springs, each essentially helical spring having opposite ends and extending in a longitudinal direction of the joint body, the opposite ends of each of the two essentially helical springs being connected to the fixing elements, wherein at least one of interference between the two essentially helical springs and tension in the two essentially helical springs limits the joint body to bending substantially only in a single plane.
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Abstract
In a prosthetic device for joints for implantation in humans and animals, a joint body is arranged between two fixing elements which are intended to be connected to adjoining bone parts. The joint body includes at least one essentially helical spring, and the ends of each spring are connected to the fixing elements.
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Citations
20 Claims
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1. A prosthetic device as a replacement for knuckle joints, intermediate and outer joints of fingers, and wrist joints of the fingers and hands for implantation in humans and animals, the device comprising:
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two fixing elements which are each adapted to be connected to adjoining bone parts; and
a joint body arranged between the two fixing elements, the joint body consisting essentially of two essentially helical springs, each essentially helical spring having opposite ends and extending in a longitudinal direction of the joint body, the opposite ends of each of the two essentially helical springs being connected to the fixing elements, wherein at least one of interference between the two essentially helical springs and tension in the two essentially helical springs limits the joint body to bending substantially only in a single plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification