Patent ID: 7765646

Claim:
An instrument for manual operation, said instrument comprising: a stem defined by a longitudinal axis; an attendant member disposed at a distal end of the stem and having a functional side disposed laterally thereof; and a hand grip disposed at a proximal end of the stem and defined by a longitudinal axis, said hand grip having a substantially round shape cross-section and being fixed in an extended direction of the stem, wherein the longitudinal axis of the stem extends at a distance to the longitudinal axis of the hand grip so that the longitudinal axis of the hand grip extends offset to the longitudinal axis of the stem at a side away from the attendant member, wherein the hand grip has a first longitudinal curve at the functional side of the attendant member, and a second longitudinal curve extending at the side opposite the functional side of the attendant member and differing from the first curve, said second curve having convexity which is greater than a convexity of the first curve.