CFR-PEEK orthopedic implant, preparation method thereof and wireless sensing device

Abstract

The invention discloses a CFR-PEEK orthopedic implant, a preparation method thereof and a wireless sensing device. The carbon fiber reinforced polyether-ether-ketone orthopedic implant comprises a carbon fiber reinforced polyether-ether-ketone matrix and a patterned carbonized layer, and the patterned carbonized layer is formed by performing in-situ carbonization on the carbon fiber reinforced polyether-ether-ketone matrix. Therefore, a mechanical signal, a temperature signal or a chemical signal can be sensed by utilizing the patterned carbonized layer formed on the carbon fiber reinforced polyether-ether-ketone matrix in situ, the healing condition of an injured part can be detected and monitored in real time by combining an in-vitro probe or an in-vivo signal transduction device, and complications can be found in time; and operations and postoperative rehabilitation can be better guided.

Description

technical field [0001] The present application relates to the field of wireless sensing, in particular to a CFR-PEEK orthopedic implant, a preparation method thereof, and a wireless sensing device. Background technique [0002] Postoperative healing monitoring in orthopedics has always been an important and difficult research topic. During postoperative rehabilitation, different load-bearing and activity modes will affect the force and micro-motion of the fracture site, thus playing a role in the healing of the site. irreversible effects. [0003] At present, the most commonly used postoperative observation method is X-ray plain film or CT (Computer Tomography, computer X-ray tomography). Due to the ionizing radiation of X-ray and the inconvenience of follow-up, the sampling frequency of this method is low and cannot reach The need for convenient monitoring at any time. [0004] Therefore, if real-time detection and continuous monitoring of orthopedic injuries can be carri...

AI Technical Summary

Problems solved by technology

However, the method of attaching additional sensors to orthopedic implants to detect signals through external antennas has obvious shortcomings: the additionally pasted sensors are attached to the metal implants by glue. Yes, after working for a long time in the body, the viscosity of the adhesive layer (adhesive layer) will decrease, which will cause the sensor to be not firmly attached to the metal implant matrix, resulting in a stiffness mismatch problem, which will cause the capacitance C and inductance L of the entire system to decrease. drop, while the resonant frequency is calculated according to the formula When the capacitance and inductance decrease, the resonant frequency will increase, making the resonant response frequency of the sensor itself higher, which will affect the difficulty of in vitro detection and receiving wireless sensor signals. Real-time detection and continuous monitoring of

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