Ligature tier

Abstract

Abstract 868,634. Ligaturing appliances. WOOD, E.C., LEVAUX, R. G., and BROWN, A. M. April 23, 1959 [May 5, 1958; March 10, 1959], No. 13901/59. Class 81 (2). A device for applying a ligature to a blood vessel comprises a pair of forceps for gripping the blood vessel and for holding a prepared loop of ligature around it, a slidable carriage for pulling on the free end of the ligature and tightening it around the blood vessel and a blade for cutting off the excess length of ligature. The forceps have jaws 18, 20 pivoted at 22, operated by handles 12, 25 with holding lugs 30, 32. The ligature 120, previously formed with a loop and slip-knot, is placed around the jaws with its free end passed through a bore in the upper jaw and gripped by a spring-loaded clamp 64 mounted on a slidable carriage 34. Thus, with the blood vessel gripped by the jaws 18, 20, retraction of the carriage, by means of finger loop 46, draws the ligature on to the blood vessel and then pulls the loop tight. At the end of the travel of the carriage, a surface 50 engages a pivoted spring-loaded lever 108 and causes it to push a blade 92 forward in a guide 88, so that its further end, which is sharpened, cuts off the ligature close to the knot. Suitable ligatures, having preformed loops, are preferably stored mounted on a shaped card which holds it in position ready for mounting on the appliance. A simplified form of the appliance is described with reference to Figs. 15-17 (not shown). In this the free end of the ligature is attached to the sliding carriage by means of a second loop engaging a hook on the carriage and the cutting- blade is pressed forward by an independent action of the thumb pressing on its rear end.

Inventors

No inventors recorded.

Bibliographic Details