Persistent Link:
http://hdl.handle.net/10150/612159
Title:
A TELEMETRY SYSTEM FOR MEASURING STRESS IN A HIP JOINT PROSTHESIS
Author:
Postal, R. B.; Boreham, J. F.
Affiliation:
California Institute of Technology
Issue Date:
1984-10
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
It has been clinically observed that a significant fraction of hip joint implants fail due to mechanical loosening, particularly in younger, more active patients. Design enhancements are hampered by the lack of in vivo data of the actual forces produced on the prosthesis by various recipient activities. This paper describes a telemetry system small enough to fit in the spherical ball joint of a hip joint prosthesis. The system is capable of transmitting sufficient in vivo data to allow reconstruction of major forces through the prosthesis. The design allows for total hermetic enclosure of the electronic parts within the prosthesis which is implanted within the human body. Figure 1 shows 2 engineering model prosthesis assemblies. Input power coupling is provided through a cuff temporarily placed over the area of the device. Telemetry readout from the transmitter antenna, also totally enclosed, allows periodic out-patient checkup and monitoring. In this manner, since no batteries are used, in vivo monitoring of load forces on the prosthesis can be accomplished periodically over a several year period without surgical revision. The data obtained will be used to design stronger implants which will have very low failure rates even when subjected to activities of younger recipients.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleA TELEMETRY SYSTEM FOR MEASURING STRESS IN A HIP JOINT PROSTHESISen_US
dc.contributor.authorPostal, R. B.en
dc.contributor.authorBoreham, J. F.en
dc.contributor.departmentCalifornia Institute of Technologyen
dc.date.issued1984-10-
dc.rightsCopyright © International Foundation for Telemeteringen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractIt has been clinically observed that a significant fraction of hip joint implants fail due to mechanical loosening, particularly in younger, more active patients. Design enhancements are hampered by the lack of in vivo data of the actual forces produced on the prosthesis by various recipient activities. This paper describes a telemetry system small enough to fit in the spherical ball joint of a hip joint prosthesis. The system is capable of transmitting sufficient in vivo data to allow reconstruction of major forces through the prosthesis. The design allows for total hermetic enclosure of the electronic parts within the prosthesis which is implanted within the human body. Figure 1 shows 2 engineering model prosthesis assemblies. Input power coupling is provided through a cuff temporarily placed over the area of the device. Telemetry readout from the transmitter antenna, also totally enclosed, allows periodic out-patient checkup and monitoring. In this manner, since no batteries are used, in vivo monitoring of load forces on the prosthesis can be accomplished periodically over a several year period without surgical revision. The data obtained will be used to design stronger implants which will have very low failure rates even when subjected to activities of younger recipients.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/612159-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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