TODAYS PATENT- CARPAL TUNNEL SYNDROME SCREENING DEVICE
The Shock absorbing device for Windshield wiper blade was invented by Roger D. Lemmen on the 4th of October 1988, bearing patent number US4774966A.
The above invention is carpal tunnel syndrome screening device for measuring the strength of or combined force vector generated by the intrinsic hand muscles innervated by the median nerve after is passes through the carpal tunnel includes a base defining a palm support or rest surface and a thumb guide surface. The surfaces are configured to position the thumb of the user for movement in a substantially vertical plane with the thumb positioned at an angle of approximately 45° with respect to the index finger. The device further includes a thumb receiving cradle and a cradle support structure. A force transducer operatively connected to the cradle measures the force created by movement of the thumb. The device provides an objective indication of the presence of carpal tunnel syndrome.
The present invention allows the generation of criteria indicating normal strength. An individual may be tested or screened and the strength indication compared with the predetermined normal strength measurements.