Prosthetic Design, Inc.

Steve Steinbarger

Tracy C Slemker

Scott R Schall

Michael McDowell

Damon Johncour

A prosthetic knee-joint assembly includes: (a) a proximal segment; (b) a distal segment pivotally disposed with respect to the proximal segment to form a knee joint; (c) a first coupling integral with the proximal segment that includes a first adjustable member having a frustopyramidal boss extending proximally with respect to the proximal segment that is adapted to mount the proximal segment to above-knee prosthetic knee components, where the frustopyramidal boss is slidably adjustable and/or rotatably adjustable with respect to the proximal segment; and (d) a second coupling integral with the distal segment that includes a second adjustable member having a second frustopyramidal boss extending distally with respect to the distal segment that is adapted to mount the distal segment to below-knee prosthetic limb components, and where the second frustopyramidal boss is slidably adjustable and/or rotatably adjustable with respect to the distal segment.

Prosthetic knee-joint assembly including adjustable proximal and/or distal couplings

A prosthetic coupling comprising an annular coupling adapter having a coupling end and an opposed pylon mounting end, the coupling end including a central bore adapted to receive, and be coupled to a prosthetic limb pyramid component, where the pylon mounting end includes a diametrically restrictable tube with at least two circumferential discontinuities and an axial depth with a predetermined extension greater than a minimum depth required to adequately secure a prosthetic limb pylon component therein, where the predetermined extension provides the prosthetic coupling height adjustability with respect to the prosthetic limb pylon to which it is adapted to be secured. Such prosthetic couplings may be supplemented with bushings inserted within the pylon mounting end to inhibit further pylon insertion beyond a desired depth.

Prosthetic annular coupling socket adaptor with adjustable clamp

A shuttle-lock for maintaining a patient's residual limb in a prosthetic limb socket includes: (a) a housing having a distal surface adapted to abut an inside surface of a prosthetic limb socket, a substantially concave proximal surface and a hole extending into the center of the proximal surface, where the hole is adapted to receive a plunger pin carried on a patient's residual limb therein; and (b) a lock positioned within the housing for securing the plunger pin received in the hole where the concave proximal surface includes a plurality of radially extending grooves that are adapted to guide the plunger pin into the hole.

Shuttle lock

A plunger pin assembly for locking engagement with a shuttle lock of a prosthetic limb socket assembly, includes: (a) a housing having an internal cavity and a center-hole extending into its distal end, communicating with the internal cavity; (b) a cradle retained within the cavity, having a distal-facing outer surface that is laterally slidable with respect to the proximal-facing inner surface of the cavity, where the cradle includes a plunger pin component extending distally therefrom; and (c) a resilient shock absorber positioned, at least partially, between the proximal end of the plunger pin component and the inner distal-facing surface of the cavity; where (d) the cradle includes a center hole extending axially therethrough, the plunger pin component includes a ball positioned on a proximal end thereof, the ball having a diameter larger than the diameter of the center hole of the cradle, and the ball of the plunger pin component is seated in the center hole of the cradle to provide a ball joint coupling between the cradle and the male coupling component. The sliding engagement between the cradle and the housing provides the plunger pin component with multiple degrees of lateral adjustability with respect to the housing, and the ball-joint coupling between the plunger pin component and the cradle provides the plunger pin component with angular and/or rotational degrees of adjustability.

Adjustable plunger pin assembly for a prosthetic limb

A shuttle lock for maintaining a patient's residual limb in a prosthetic limb socket includes: (a) a housing having a distal surface adapted to abut an inside surface of a prosthetic limb socket, a substantially concave proximal surface and a hole extending into the center of the proximal surface, where the hole is adapted to receive a plunger pin carried on a patient's residual limb; (b) a lock positioned within the housing for securing the plunger pin received in the hole; and (c) means for securing the housing of the shuttle lock within the prosthetic limb socket; (d) where the concave proximal surface includes at least one radial groove which is adapted to guide the plunger pin into the hole. Preferably the housing is substantially cylindrical in the concave proximal surface includes a plurality of the radial grooves circumferentially distributed to thereabout, where the radial grooves extend substantially from and outer circumference of the concave proximal surface to an outer circumference of the hole. A covering adapted to be worn on a patient's residual limb is also provided, where the covering includes the plunger pin extending from a distal end of the covering, and also includes a projection extending distally therefrom that is adapted to be received within the radial groove on the proximal surface of the shuttle lock so as to reduce rotation of the patient's residual limb and covering with respect to the prosthetic limb socket when the plunger pin is secured within the hole of the shuttle lock. Preferably, the covering includes a plurality of ribs extending distally therefrom and oriented radially with respect to the plunger pin, so that the ribs are adapted to be received within the radial grooves to provide the anti-rotation.

Growing community of inventors

Centerville, OH, United States of America

Steve Steinbarger