Life prediction method for transmission wire of minimally invasive surgical instrument

The invention discloses a life prediction method for a transmission wire of a minimally invasive surgical instrument, and the method mainly comprises the steps: building a finite element simulation model of a wire transmission structure through finite element software Abaqus based on the actual layout of the wire transmission of the surgical instrument; finite element software Abaqus is used for conducting finite element dynamic and static analysis according to the actual working condition, and a stress change curve and a distribution cloud picture of the transmission wire are obtained; and importing the obtained stress change curve and the stress distribution cloud picture into Fe-safety software to obtain a load spectrum of the transmission wire, determining the shortest life of the transmission wire by using a nominal stress method and obtaining a life distribution cloud picture of the transmission wire, and then visually displaying the life distribution cloud picture of the transmission wire by using fini