×

Cerebral palsy arm and hand brace

  • US 4,237,873 A
  • Filed: 12/11/1978
  • Issued: 12/09/1980
  • Est. Priority Date: 12/11/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. A neuro-muscular stabilizing device for a human arm comprising, in combination:

  • a normally vertical post having normally upper and lower ends,an elongate, substantially rigid sleeve adapted to embrace a human forearm having an inboard end (towards the elbow) and an outboard end (toward the hand),a coupling linkage train connecting the upper end of the post and the inboard end of said sleeve, comprising;

    (a) a first arm having inboard and outboard ends connected to the upper end of the post at its inboard end,(b) the means connecting said post and the inboard end of said first arm comprising a double element friction joint,(c) another arm having inboard and outboard ends coupled at its outboard end to the inboard end of the sleeve,(b) the means coupling the outboard end of said other arm and the inboard end of the sleeve comprising a double element friction joint,(e) means coupling the inboard end of the other arm and the outboard end of the first arm to one another comprising a single element friction joint, and(f) a cylinder-piston rod extension-retraction assembly received within the first arm and forming an extendable and retractable part thereof, said assembly having a spring loading for extension of the piston rod with respect to said cylinder,(g) the piston part of the said assembly fixed to one part of said arm and the rod part of the assembly fixed to another part thereof, so that insertion of the rod part of the assembly into the cylinder part shortens the said first arm and extension thereof lengthens the said first arm,(h) the sleeve and arm lengths so sized, with the extension-retraction assembly fully extended, so that the means coupling the inboard end of the other arm and the outboard end of the first arm to one another normally is located substantially at the elbow of a user of the device when the user'"'"'s arm, engaged, with the device, is fully extended.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×