The nail bin shrapnel is mostly made of medical metal materials with excellent elastic properties and biocompatibility, such as stainless steel or nickel-titanium alloy. Stainless steel shrapnel, with its high strength, good corrosion resistance and relatively stable elastic modulus, is widely used in all kinds of conventional endoscopic staplers. It can maintain good elastic recovery ability under multiple anastomosing operation cycles and reliably push the anastomosing nail to complete the firing action. Nickel-titanium alloy further improves the performance of the shrapnel by virtue of its unique shape memory effect and superelasticity. At low temperature, it can be easily shaped and easily installed in the nail bin, and after entering the body temperature environment, it can quickly return to the preset shape and elastic state, providing continuous, accurate and strong launching power for the anastomotic nail, even in the face of complex and changeable surgical conditions, it can ensure the efficient anastomotic process.
In terms of functional characteristics, the core task of nail bin shrapnel is to quickly and accurately push out the anastomosing nail stored in the nail bin at the moment the stapler is started, so that it is embedded in the tissue to be anastomosed, and complete the connection. During the operation, when the doctor triggers the stapler to fire the command, the shrapnel responds immediately, and uses the elasticity generated by its own elastic deformation to overcome the friction between the anastomotic nail and the nail bin and the resistance of the tissue to the anastomotic nail, driving the anastomotic nail to the target tissue at a high speed, ensuring that the anastomotic nail is nailed in accordance with the predetermined trajectory and force, so as to achieve a tight and orderly anastomotic effect. It can effectively reduce the incidence of postoperative anastomotic bleeding, leakage and other complications, and lay a solid foundation for the success of surgery and rapid recovery of patients.
