DRUJ Brace with Independent Compression Zones
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Solution Overview
Problem
Current wrist braces and splints fail to provide adequate support for the distal radioulnar joint (DRUJ) without compressing or irritating the ulnar styloid, restricting wrist motion, and are often complex and costly to manufacture, leading to inadequate pain relief and functional impairment in DRUJ and TFCC injuries.
Innovation Solution
A DRUJ Brace with ulnar styloid accommodation, featuring a flexible inelastic sheet with adjustable strap compression that avoids irritation and provides independent compression of the proximal and distal DRUJ portions, allowing unilateral donning and doffing, and using washable, durable materials to accommodate various user activities and price points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wrist brace is designed to compress the distal radioulnar joint for pain relief, then the therapeutic effect is improved, but the ulnar styloid may be compressed or irritated causing discomfort
Solution Approach 1:
The brace is segmented into two separate compression zones: a proximal compression zone and a distal compression zone. Each zone has its own independent strap and fastening mechanism, allowing the distal compression to be applied to the DRUJ while the proximal compression accommodates the ulnar styloid by positioning it distally, thereby resolving the contradiction between therapeutic compression and avoidance of styloid irritation
Solution Approach 2:
The brace employs different compression characteristics in different regions: the distal compression zone provides firm compression for pain relief, while the proximal compression zone provides softer, more accommodating compression for the ulnar styloid area. This local differentiation of compression quality allows simultaneous achievement of therapeutic effect and comfort
2Manufacturing precision
If a wrist brace uses complex fastening mechanisms to provide adjustable compression, then the compression control is improved, but the ease of donning and doffing is reduced
Solution Approach 1:
The fastening mechanisms are pre-positioned and pre-configured on the brace during manufacturing, with all necessary adjustment features already in place. This preliminary preparation allows the user to simply pull and fasten without complex assembly or adjustment steps, achieving both precise compression control and ease of use
Solution Approach 2:
The brace incorporates self-adjusting fastening mechanisms that automatically maintain appropriate compression levels as the wrist swells or moves. The elastic straps and progressive tensioning features allow the brace to self-regulate compression without requiring frequent manual adjustment, reducing operational complexity while maintaining precision
3Stability of the object's composition
If a wrist brace is designed to immobilize the wrist for injury protection, then the stability is improved, but the wrist motion is restricted
Solution Approach 1:
The brace applies compression partially rather than fully immobilizing the wrist. By providing targeted compression to the DRUJ and TFCC areas while leaving the radiocarpal joint and wrist motion relatively free, the brace achieves sufficient stability for healing without excessive restriction of necessary wrist movement for daily activities
Data Source
AI summary
The DRUJ brace is donned circumferentially around the distal radioulnar joint and provides adjustable compression of the proximal portion of the distal radioulnar joint that is independent of adjustable compression of the distal portion of the distal radioulnar joint, without compression of the ulnar styloid. Compression is maintained by hook and loop fasteners.