Previous efforts on this problem have resulted in the use of two general principles, first the aneurysm needle type, which is either threaded before or after inserting, or, second, the barbed needle type, in which the needle is dragged through by its barb tip, engaging a spring ratchet in the opposite member. These devices have the disadvantage of sewing in only one direction, of placing one stitch at a time, of tearing large holes, and of usually requiring both hands or assistance in a space already limited in extent.
The instrument devised to obviate these difficulties consists essentially of two specially designed needle holders hinged together scissors fashion but by means of an "open joint" as shown at D. The parts were also photographed to a somewhat larger scale (as in A, B and C) to show more detail.
Needles varying in length from 0.75 to 3 cm. or even