Patent ID: 7506409
Filing Date: 2009-03-24
Classification: A61B,A63B,B25C,B25G,B43K,B60T,G05G,Y10S,Y10T

Abstract:
1. A method for designing a handle that corresponds to the sizes of a human 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 the hand from the radial side to the ulnar side across the horizontal creases of the hand thereby defining a length of the handle; mapping a first line distal from the base of the thumb of the hand traveling in the ulnar direction to end before the longitudinal crease of the hand; mapping a second line distal to the pisiform bone on the ulnar side of the hand from the ulnar side of the hand and traveling toward the radial side of the hand across approximately ⅔ of the hypothenar muscle area of the hand; mapping a third line extending from the thenar muscle area of the hand to the hypothenar muscle area at the horizontal creases of the hand; and linking the first line, the second line and the third line with a first longitudinal line and a second longitudinal line that cross the palm of the hand thereby defining a proximal side for a handle of a corresponding size for a hand having a portion away from the carpal tunnel of the hand.