Surgical Forceps with Force/Position Perception Based on FBG

Surgical instruments play a vital role in the medical field. Surgical forceps can help improve the accuracy of operations, thereby reducing the risk of surgery and increasing the success rate. Currently, most surgical forceps only provide force feedback information. This paper proposes a new type of fiber Bragg grating force/position sensing surgical forceps, where the upper forceps are connected by three arc-shaped cylindrical surfaces and two circular rings for force/position detection, the lower forceps are employed for temperature compensation and contact sensing, whereas the structural optimization of the surgical forceps is accomplished via finite element analysis. After optimization, the measurement range of the sensor is 0-10N, and the maximum sensitivity is 91.3μɛ/N. harmonic response analysis is conducted to establish that the operational frequency range of the surgical forceps lies between 0 to 1802.8 Hz.