A trigger finger extension splint is a device designed to immobilize the affected finger or thumb in a straightened position, preventing the “locking” or “catching” sensation and allowing the inflamed tendon to rest and heal. Key specifications involve the materials used to balance rigid support with comfort for day and night wear.
General Specifications
- Intended Use: The primary purpose is to provide relief from stenosing tenosynovitis (trigger finger/thumb), arthritis pain, sprains, fractures, tendonitis, and post-operative recovery.
- Target User: Designed for adults, and often available in a universal, one-size-fits-most configuration that can be used on any finger (index, middle, ring, pinky, or thumb) on either hand.
- Application Environment: Suitable for use during daily activities (typing, driving) or worn overnight during sleep, which is often when symptoms are worst.
- Weight: Extremely lightweight for comfort and minimal interference with daily life, typically weighing between 50 to 150 grams.
Materials & Construction
- Support Elements:
- Built-in Aluminum Stay: The core of the splint is an integrated, rigid, yet malleable, aluminum alloy bar or plate that runs the length of the finger to provide firm support and prevent bending.
- Padding: The rigid stay is embedded within soft, cushioned material like Ethafaom or foam padding to eliminate pressure points and ensure comfort.
- Fabric:
- Constructed from breathable, high-grade composite materials or a neoprene blend covered with stretch nylon and cotton fabric against the skin.
- Materials are often moisture-wicking, hypoallergenic, and odorless for hygiene and long-term wear.
Key Features & Adjustability
- Closure System: Features adjustable hook-and-loop (Velcro) fastener straps that allow for a customized fit and compression level.
- Adjustable Fit: The splint accommodates various finger circumferences (up to approximately 3.5 inches) and can be trimmed or molded for a personalized fit by a healthcare professional if needed.
- Functional Design: The design typically leaves the rest of the hand and wrist unhindered, allowing the user to perform many daily tasks more easily.
- Hygiene: The materials are typically washable (hand wash recommended after removing the aluminum insert) and reusable.
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