Method of manufacturing prosthetic socket interface
A method and system for fitting a compression stabilized prosthetic socket for a patient having an amputated limb and a remaining portion that includes a first socket portion for contacting a patient's remaining portion of a limb, and a second socket portion for attachment of a prosthetic device. The first socket portion has compression portions having a radius for compressing portions of the patient's remaining portion of a limb, and relief portions receiving any portions of the patient's remaining limb which bulge upon the compression applied by the compression portions. The relief portions may be formed as openings or as enlarged radius portions. The fitting method and system can include use of a mechanism to compress bar surfaces against the limb in areas selected to receive compression portions in order to prepare an image for creating the first socket portion.
1. A method of manufacturing an interface for a body part having an underlying skeletal structure and an underlying tissue lying within the body part, the method comprising:
creating a model of the body part;
reducing a radial dimension of the model at a first compression area, a second compression area, and a third compression area;
wherein the compression areas are disposed circumferentially around a long axis of the model and approximately equally spaced;
wherein each of the compression areas is longitudinal-shaped and has a longitudinal dimension that extends substantially along a long axis of the model;
fabricating an interface having a surface that mates with the compression-pattern of the modified model; and
wherein the surface of the interface is sized and dimensioned to compress soft tissue of the body part against the skeletal structure when the interface is worn on the body part such that motion of the skeletal structure towards a wall of the interface is reduced.
2. The method of claim 1 , wherein the model is a physical model.
3. The method of claim 2 , wherein the step of reducing a radial dimension of the physical model is accomplished by subtracting material from an outer surface of the physical model.
4. The method of claim 2 , further comprising the step of increasing a radial dimension of the physical model by adding material to an outer surface of the physical model.
5. The method of claim 2 , further comprising the step of scanning a surface of the model.
6. The method of claim 5 , wherein the model is a positive model of the body part and the surface is an exterior wall of the model.
7. The method of claim 5 , wherein the model is a negative model of the body part and the surface is an interior wall of the model.
8. The method of claim 1 , wherein the model is a virtual model.
9. The method of claim 8 , wherein the step of reducing a radial dimension of the virtual model is accomplished by extruding a surface of the virtual model inward towards a centerline of the limb.
10. The method of claim 9 , further comprising the step of increasing a radial dimension of the virtual model by extruding a surface of the virtual model outward away from a centerline of the limb.
11. The method of claim 1 , wherein the step of creating a model of the body part comprises imaging the body part to obtain a virtual model, and uploading the virtual model into a computer-aided design (CAD) program.
12. The method of claim 11 , wherein the body part is in an uncompressed state during scanning.
13. The method of claim 12 , wherein the body part is in a compressed state during scanning.
14. The method of claim 1 , wherein the step of creating a model of the body comprises casting the body part.
15. The method of claim 14 , wherein the step of creating a model further comprises using the cast to make a positive model of the body part.
16. The method of claim 14 , wherein the step of creating a model further comprises imaging the interior of the cast and uploading the virtual model into a computer-aided design (CAD) program.
17. The method of claim 14 , wherein the body part is in an uncompressed state during casting.
18. The method of claim 14 , wherein the body part is in a compressed state during casting.