930,777. Stapling. B. S. BOBROV. Sept. 2, 1959, No. 29912/59. Class 89 (3). [Also in Group VI] An instrument for suturing the intestines by stapling has self-aligning jaws for clamping the tissue to be operated on. Arms 1, 2, Fig. 1, are pivoted at 6 and grip the tissue between jaws 9, 30, being held by a clamping screw 5. Tantalum staples are arranged in a row in a slot behind a cover-plate 11 and are pressed out individually by a pusher member 25 which forces them through the tissue and causes them to be bent round, to secure them, by engaging a groove in the lower jaw 30 which, to ensure accurate alignment and co-operation, is pivoted at 33 to the arm 2. In order to carry out a particular form of operation on the stomach a second parallel row of staples is inserted by a similar pusher member 4 on the further side of the jaw 9. The pusher member is automatically advanced one staple width at a time by a spring latch member 27, Fig. 7, which is pressed to the right, to engage the adjacent staple recess 10, by inclined surface 43 when the pusher 25 is depressed. This tensions the limb 44 of a spring 26 so that the carrier plate 24, together with the pusher 25, is drawn one space to the right as soon as the pusher is released.