Abstract: A heat-retractable shape memory clamp used in surgery applications is closed with a device for heating and closing heat-retractable clamps. The device includes an electronic power and control circuit which is capable of delivering different predetermined amounts of heat, each corresponding to a clamp of a given size. Settings of the electronic power and control circuit are matched to the type and size of the clamp being used so that the prongs of the clamp are closed automatically, and without the danger of accidental bone necroses. Any of a variety of heat-retractable shape memory clamps of the type generally referred to in the industry as “hot staples” may be employed with the heating device, including monocortical and bicortical bipodes, epiphysial bipodes and quadripodes, with preferred staples comprising a quantity of a nickel-titanium alloy which varies between 0.8 g and 2.8 g.

Abstract: A device for heating and closing heat-retractable clamps for surgical use includes a housing which encloses an electronic power and control circuit, a power cord connected to the circuit, and a heating unit for applying heat to the clamps. The electronic power and control circuit includes a power supply, a controller and a regulating circuit for delivering different predetermined amounts of heat, each corresponding to a clamp of a given size. The heating unit is capable of being sterilized in an autoclave and includes a linking cord, one end of which is capable of being plugged into the housing for the electronic circuit and the other end of which is coupled with a sleeve having a pair of electrodes and a control switch for operating the electrodes.