A surgical instrument for at least partially occlusion of the uterus blood vessels during a cesarean section comprising two jaws movable relative to each other to at least partially occlude the uterus blood vessels, latching mechanism to retain the jaws the in the working position over needed period of time and release the jaws when the need for occlusion is over,a disposable tubular cover on the end member of each jaw, said end member of a jaw is connected with the other member of the jaw with an angle 25-45 degrees, preferred angle is 30-45 degrees, said cover has an inner cavity open from one end for receiving and retaining the jaw, the thickness of the side of the cover to be engaged with the blood vessels is 3-15 mm, preferably, 8-12 mm, the width of said cover is 10-30 mm, the length of said cover is 50-60 mm, and said cover made of gauze or fabric.
