Device for angularly coupling prosthetic components
The present invention comprises an angularly adjustable coupler. The first and second ends are in an angularly adjustable mating engagement. The first end has a longitudinal axis and a base with an optionally concave and serrated surface, and can comprise a collared clamp for connecting to a pylon. The second end has a longitudinal axis and a base with an optionally convex and serrated surface, and can comprise a receiver for connecting to a pyramidal adapter. The concave portion of the first end and the convex portion of the second end are complementary to each other. A connector is provided to connect the first and second ends in a selected angular alignment about a fixed axis of rotation. The range of angular alignment of the first and second components spans approximately 50 degrees about the fixed axis of rotation.
1. In combination:
A. a pylon having a first end and a longitudinal axis;
B. a pyramidal adapter; and
C. an angularly adjustable coupling assembly comprising:
i. a first end with:
a. a collared clamp for being removeably connected to said first end of said pylon;
b. a first end base comprising a concave surface; and
c. a first end hole through said first end;
ii. a second end with:
a. a receiver for being removeably connected to said pyramidal adapter;
b. a second end base comprising a convex surface adapted to be in mating engagement with said concave surface of said first end and being angularly adjustably connected to said first end base about a fixed axis of rotation; and
c. a second end hole through said second end and a slot through said second end that is generally perpendicular to said second end hole;
iii. a pin having a side hole and for being received within said second end hole; and
iv. a fastener for being inserted through said first end hole and said slot, and into said pin side hole to hold said first end and said second end in a selected angular alignment with respect to each other.
2. The combination of claim 1 wherein said concave surface and said convex surface are serrated.
3. In combination:
A. a pylon having a first end and a longitudinal axis;
B. a pyramidal adapter; and
C. an angularly adjustable coupling assembly comprising:
a first end with:
a. a collared clamp for being removeably connected to said first end of said pylon; and
b. a first end base comprising a concave surface;
wherein said first end has a first end hole therethrough;
ii. a second end with:
a. a receiver for being removeably connected to said pyramidal adapter; and
b. a second end base comprising a convex surface adapted to be in mating engagement with said concave surface of said first end for angularly adjustably connecting said first end and said second end about a fixed axis of rotation,
wherein second end has a second end hole therethrough and a slot therethrough that is generally perpendicular to said second end hole;
iii. a pin having a side hole and for being received within said second end hole; and
iv. a fastener for being inserted though said first end hole and said slot, and into said pin side hole to hold said first end and said second end in a selected angular alignment with respect to each other.