Reusable Prosthetic Socket Mounting Block with Axial Cutouts
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Solution Overview
Problem
Existing prosthetic socket mounting systems are not reusable and often damage easily during the test fitting process, requiring costly and time-consuming fabrication of single-use mounting blocks, which complicates the alignment and adjustment of prosthetic devices for amputees.
Innovation Solution
A recyclable test mounting block system with a closed-form shape, annular groove, and axial cutouts, secured with epoxy and a pressure-adhesive band, allowing for secure attachment and easy removal without damage, facilitating multiple test mountings and alignment adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If single-use mounting blocks are used for test fitting, then alignment adjustment is possible, but fabrication cost and time increase significantly
Solution Approach 1:
The mounting block is designed to be reusable rather than single-use. After the test fitting process is complete and alignment data is transferred, the mounting block can be removed and reused for subsequent diagnostic prostheses, eliminating the need for continuous fabrication of new mounting blocks and reducing both cost and time
Solution Approach 2:
The alignment information is copied from the test prosthesis to the definitive prosthesis using transfer jigs, allowing the mounting block to be removed and reused while preserving the alignment data for the final device
2Strength
If traditional adhesive methods are used to secure mounting blocks, then attachment is achieved, but removal damages the mounting block
Solution Approach 1:
The mounting block incorporates axial cutouts that segment the structure, allowing the casting tape to be removed by cutting through these gaps without applying damaging forces to the mounting block itself
Solution Approach 2:
The casting tape acts as an intermediary material that provides strong attachment during use but can be cleanly severed for removal, protecting the mounting block from damage during the detachment process
3Reliability
If mounting blocks are made robust for reuse, then durability improves, but alignment precision may be compromised
Solution Approach 1:
The mounting block is designed with specific geometric parameters including axial cutouts at predetermined locations and a center hole, which maintain structural integrity for reuse while providing precise reference points for alignment measurements and data transfer
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and reusable alignment of prosthetic components, reducing fabrication costs and time, while allowing for precise adjustment and recording of alignment criteria for optimal prosthetic fit and alignment.
Implementation Method 1
secured with epoxy and a pressure-adhesive band
Implementation Method 2
secured with epoxy and a pressure-adhesive band
Data Source
AI summary
A temporary diagnostic prosthetic socket mounting system and kit including a generally circular test mounting block defined by an annular groove and four axial cutouts extending from the lower surface of the block to the upper surface. The axial cutouts are at least as deep as the annular groove. A band extending around the perimeter of the block is provided which spans the axial cutouts, thereby forming a void in the cutouts beneath the tape. The block is secured to a prosthetic diagnostic socket by adhesive with the band extending up over the upper edge of the block and onto the outer surface of the socket. Casting tape is applied over the socket/block joint extending into the groove. After diagnostic fitting and transfer of the alignment, a cast saw can be passed around the joint through the casting tape and into the adhesive between the upper surface of the block and the rounded distal end of the socket. The gap behind the band in the cutouts provides a void space for the saw that avoids damage to the block, and the casting tape is severed and easily removed.