A telemetry system for the detection of hip prosthesis loosening by vibration analysis

• Published in: Sensors and actuators. A, Physical Vol. 85; no. 1; pp. 42 - 47
• Main Authors: Puers, R, Catrysse, M, Vandevoorde, G, Collier, R.J, Louridas, E, Burny, F, Donkerwolcke, M, Moulart, F
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Lausanne Elsevier B.V 25.08.2000; Elsevier Science
• Subjects: Accelerometers; Applied sciences; Demodulation; Exact sciences and technology; General equipment and techniques; Implantable system; Inductive powering; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Mechanical instruments, equipment and techniques; Miniature accelerometer; Patient monitoring; Physics; Services and terminals of telecommunications; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Telemetering systems; Telemetry. Remote supervision. Telewarning. Remote control; Telemetry: remote control, remote sensing; radar; Transducers; Vibration analysis; Vibration isolation; Vibration measurement; Inductive powering; Implantable system; Vibration analysis; Miniature accelerometer; Accelerometers; Prostheses; Circuit layout; Vibrational analysis; Miniaturization; Experimental study; Telemetry; Inductive load; Data transmission systems
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/S0924-4247(00)00320-4

This paper proposes a system for the detection of hip prosthesis loosening by means of a vibration analysis technique. Although this technique has been adapted before, the novelty presented here lies in the fact that the monitoring is done inside the prosthesis itself, offering better measurement results. Thus, an implantable monitoring system is required, involving low power consumption and miniaturization. Monitoring is done by a miniature, capacitive accelerometer. The monitoring system is equipped with a telemetric link, to provide data transmission from the implant to a PC, where the data are analyzed. The system is powered inductively, since it is intended for long-term implantation.