GB1021207A - Suturing instrument - Google Patents

Abstract

1,021,207. Suturing appliances. CANADIAN PATENTS & DEVELOPMENT Ltd. Jan.18,1963 [Jan. 26, 1962], No. 2413/63. Heading A5R. A suturing instrument comprises a stapledriving assembly 1 and a staple-anvil assembly 2, each including a two-part cylindrical bushing 30, 63 held between jaws urged together by a spring 9, 57, one bushing 30 having circumferentially arranged staple-receiving slots 38 (Fig. 11 not shown) and a tubular staple-driver 43 (Fig. 12 not shown) and the other having pairs of depressions 69 (Fig. 15 not shown corresponding to the slots, a locking bar 82 Figs. 34a not shown) for releasably securing the assemblies together and means 14, 15, 22 carried by the staple-driving assembly for effecting a stroke of the staple driver. The staple-driving assembly includes a bushing 30 in two semi-cylindrical sections and having a circumferential flange 33 (Fig. 10 not shown) held in grooves 11 formed in a pair of jaws 5, 6 (Fig. 3 not shown) formed at one end of arms 3, 4 having at the other end handles 7, 8 urged apart by the spring 9 so that the jaws are urged together. The staple-anvil assembly is similarly arranged. One arm of the staple-anvil assembly has a projection 75 with an inclined groove 77 which is engageable with an inclined portion 91 of a locking bar 82 slidable in one arm of the staple-driving assembly. Engagement between the inclined groove and the inclined portion of the locking bar secures the assemblies together so that a projection 92 on one assembly engages a recess on the other assembly and the bushings are axially aligned. Spring strips 14,15 (Fig. 3 not shown) having jaws 17,18 are secured to and overlie the arms and jaws of the staple-driving assembly. The jaws of the spring strips have grooves which receive a circumferential flange 47 of the tubular stapledriver 43. The staple-driver is coaxial with the staple-receiving bushing and has fingers 48 which enter the staple-receiving slots 38. In use the ends of a severed blood vessel are placed between clamps 100 (Fig. 8 not shown) mounted on the assemblies, and passed through and cuffed over the bushings. The assemblies are then secured together. The jaws of the spring strips are then moved away from the bushing holding the jaws to cause the staple-driver fingers 48 to eject U-shaped staples from the slots, which are laterally closed, into the tissue and against the anvil bushing, by pulling a slide 22 to which cams 25 are attached by legs. The cams 25 are disposed between the spring strips and the arms they overlie.