Other

Prosthetic Design, Inc.

Lanny K Wiggins

Tracy C Slemker

Scott R Schall

Steven Steinbarger

A coupling-socket adapter assembly for a prosthetic limb. A base plate subassembly is attachable to a first prosthetic limb component. A coupling-socket adapter is rotatably attached to the base plate subassembly and has a cavity for receiving a male coupling member (such as a boss of a pyramidal link-plate). Various mechanisms, including a ring having internal threads and including a ring-clamp, are disclosed for locking the coupling-socket adapter against rotation with respect to the base plate subassembly and for unlocking the coupling-socket adapter for rotation with respect to the base plate subassembly, wherein the mechanisms are operable when the base plate subassembly is attached to the first prosthetic limb component.

Coupling-socket adapter assembly for a prosthetic limb

A pyramidal link-plate assembly for coupling a prosthetic limb upright assembly to another prosthetic limb component includes: a base plate member having a dome extending from a distal end and a cavity opening onto a distal apex of the dome, where the cavity includes a conically shaped portion with a diameter that widens with the distance from the distal apex of the dome; and a rotatable member which includes a substantially conically shaped body positioned within the conical portion of the cavity and which includes a frustopyramidal boss extending distally therefrom out through the opening in the distal apex of the dome. The conically shaped body of the rotatable member, positioned within the cavity, also widens with the distance from the distal apex of the dome. The boss is adapted to be received within an a central opening of a conventional annular coupling-socket. Set screws that extend radially into the central opening of the coupling socket are angled slightly distally so that when the set screws abut the outwardly angled faces of the frustopyramidal boss, further tightening of the set screws acts to pull the boss component in the distal direction, thereby causing the outer conical surface of the rotatable member's conically shaped body to press against the inner conical surface of the cavity. Accordingly, when the set screws are tightened, surface friction between the two complimentary conical surfaces prohibits further rotation of the rotatable member within the base plate member.

Prosthetic limb including an adjustable pyramidal link plate assembly

A prosthetic foot comprises: (a) a prosthetic foot member having a fore-foot portion and a heel/ankle portion; (b) a dove-tail shaped anchoring member positioned on a proximal surface of the heel/ankle portion, where the dove-tail shaped anchoring member has a proximal face, and a pair of outwardly angled vertical faces; (c) a pylon support member having an upper end adapted to receive and couple to a pylon component of a prosthetic limb, and a lower end with a dove-tail shaped groove extending therein, where the dove-tail shaped groove has a pair of inwardly angled vertical faces and an inner-distal face, and where the dove-tail shaped anchoring member is slidingly received within the dove-tail shaped groove of the pylon support member; and (d) a threaded coupler cooperative with the dove-tail shaped anchoring member to draw the inwardly angled vertical faces of the pylon support member into an interference fit with the outwardly angled faces of the dove-tail shaped anchoring member, thereby inhibiting sliding of the pylon support member with respect to the dove-tail shaped anchoring member.

Growing community of inventors

Miamisburg, OH, United States of America

Lanny K Wiggins