Parallel handle system and method for designing a parallel handle system

Abstract

A parallel handle, parallel handle system and method for designing parallel handles for a hand for use with tools or control mechanisms, that includes a handle having a radial section having a side for receiving the thumb and having a side for receiving the index finger, the radial section having a surface for engaging a portion of the palmar surface of the hand, a middle section having a side for receiving at least a portion of the middle finger and at least a portion of the ring finger and having a surface that avoids placing undue pressure on a surface of the hand located over the carpal tunnel, and an ulnar section having a side for receiving the small finger and having a surface for engaging a portion of the palmar surface of the hand so as to position the end of the small finger.

1 . A method for designing a handle that corresponds to the sizes of a hand, comprising the steps of: 
 setting the hand in a T position so that the tips of the of the long fingers of the hand are substantially in alignment;    measuring the distance across the metacarpal bones of the long fingers of a hand from the radial side to the ulnar side of the palm of the hand thereby defining a width of the handle; and    setting the distance from the ulnar palmar line to the distal side of the carpal tunnel zone equal to or less than the distance from the ulnar palmar line to the radial palmar line such that undue pressure on the carpal tunnel zone is avoided.