Dynamic splint for carpal tunnel syndrome treatment

A - Human Necessities – 61 – F

Patent

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A61F 5/00 (2006.01) A61F 5/01 (2006.01)

Patent

CA 2384683

A method and apparatus for a splint appliance to apply dynamic pressure to the transverse carpal, volar carpal, an intra carpal ligaments, tending to relieve contractures of the ligaments and thus relieving the pain and correcting altered kinematics associated with carpal tunnel syndrome, thus increasing the carpal volume, while providing free movement of the patient's wrist with minimal impediment during activities of daily living, both at home and at work. The apparatus consists of a forearm component (431) representing the splint body and designed to maintain alignment and support for a biasing means (420) positioned on the ulnar side of the forearm (50), the biasing means (420) consisting of a spring (424) located at approximately the ulnar side of the carpus and connected to a palmar component (410) fastened to the ulnar side of the hand. The biasing component (420) provides resistive force to volar glide in a manner which accurately models the kinematics of the carpus and forearm.

Cette invention concerne une méthode et un dispositif relatif à une attelle permettant d'appliquer une pression dynamique sur les ligaments carpiens transversaux, médiocarpiens et intracarpiens. Cette attelle, qui tend à atténuer les contractures des ligaments, soulage par là même la douleur et corrige une cinématique modifiée par suite d'un syndrome du canal carpien, ce qui a pour effet d'augmenter le volume carpien tout en laissant au patient la liberté de son poignet pour une gêne minimale lors des activités de la vie courante, tant à la maison qu'au travail. Ce dispositif comprend un élément d'avant-bras (431) constituant le corps de l'attelle qui est conçu pour maintenir en alignement et soutenir un élément de contrainte (420) disposé sur le côté cubital de l'avant-bras (50). Cet élément de contrainte (420) comprend un ressort (424) situé approximativement sur le côté cubital du carpe et est relié à un élément palmaire (410) fixé au côté cubital de la main. L'élément de contrainte (420) exerce une force résistive au glissement palmaire d'une façon qui reproduit avec précision la cinématique du carpe et de l'avant-bras.

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