The Development of a Long Term Temperature Telemetry System for Biological Implant PDF Download
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Author: David Susumu Kato
Publisher:
ISBN:
Category : Biotelemetry
Languages : en
Pages : 236
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Book Description
Author: David Susumu Kato
Publisher:
ISBN:
Category : Biotelemetry
Languages : en
Pages : 236
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Book Description
Author:
Publisher:
ISBN:
Category : Chemistry
Languages : en
Pages : 536
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 188
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Book Description
Author: Henry Buchanan
Publisher:
ISBN:
Category : Biotelemetry
Languages : en
Pages : 28
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Book Description
The temperature-sensing telemetry system consists of three implanted transmitters (each with its own antenna system and receiver), a scanner to sample in sequence each receiver output, a frequency counter, digital recorder, and tape punch unit. The scanner, synchronized with the digital recorder, permits temperature recording from each of the three transmitters once every 5 minutes. The implant is an FM/FM (frequency-modulated subcarrier/ frequency-modulated transmitter) telemetry unit operating in the 88 to 108 MHz FM broadcast band. Thermistors are used as temperature sensors. Printed circuit boards are used for component interconnection and antenna; mercury batteries are used for power. The sensor, radio frequency transmitter, and batteries are embedded in an epoxy case. Before implantation the unit is calibrated in a water bath over the temperature range of 34 to 42 degrees C. The system has been used to automatically record, digitally and continuously, temperature measurements of three unrestrained rhesus monkeys (Macaca mulatta) for a period of 5 weeks.
Author: Thomas B. Fryer
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages : 132
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Book Description
"With the advent of manned space flight, the National Aeronautics and Space Administration (NASA) has conducted intensive investigations on the physiological makeup of the human body. The last decade has seen major advances in the use of radiotelemetry in physiological research. Revolutionary developments in microelectronics are making possible smaller telemetry systems that can be wholly implanted in laboratory animals. The NASA Ames Research Center has been in the fore-front of such research and has developed many implantable biotelemetry devices now considered by many as a standard method for monitoring physiological functions in animals. This report describes biotelemetry developments at Ames, tracing the evolution of concepts underlying the accurate and reliable biotelemetry systems of today. Such systems are described in sufficient detail for the reader to select designs to meet specific needs. Through its Technology Utilization Program, NASA strives to make the results of such work widely available for the use of those outside the aerospace community. This publication is one of a series intended to achieve those objectives."--Foreword.
Author: P. R. Barker
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
A miniature multichannel, micro-powered biotransensor and its attendant receiving system were developed. The biotransensor included a fourchannel telemetry transmitter and sensors designed to monitor body temperature, respiration rate, cardioelectric activity, and blood pressure. The results of the program show that a system, as described above, can be made to operate in excess of 90 days and transmit simulated physiological data with a good degree of accuracy, and that through further research miniature longlived, multichannel biotransensors may be developed which will make possible the long-term monitoring of animals in stressful environment. Significant results are presented in this report, as well as recommendations for development of future miniaturized multichannel bioinstrumentation systems, capable of operating in excess of one year. (Author).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Book Description
Author: Isar Mostafanezhad
Publisher: Cambridge University Press
ISBN: 1316982602
Category : Technology & Engineering
Languages : en
Pages : 288
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Book Description
In this comprehensive work, experts in the field detail recent advances in medical and biological microwave sensors and systems, with chapters on topics such as implantable sensors, wearable microwave tags, and UWB technology. Each chapter explores the theory behind the technology, as well as its design and implementation. This is supported by practical examples and details of experimental results, along with discussion of system design, design trade-offs, and possible constraints and manufacturing issues. Applications described include intracranial pressure monitoring, vital signs monitoring, and non-invasive molecular and cellular investigations. Presenting new research and advances in the field, and focusing on the state of the art in medical and biological microwave sensors, this work is an invaluable resource for enthusiastic researchers and practicing engineers in the fields of electrical engineering, biomedical engineering, and medical physics.
Author: Tomaz Jarm
Publisher: Springer Science & Business Media
ISBN: 3540730435
Category : Technology & Engineering
Languages : en
Pages : 2365
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Book Description
Biomedical engineering brings together bright minds from diverse disciplines, ranging from engineering, physics, and computer science to biology and medicine. This book contains the proceedings of the 11th Mediterranean Conference on Medical and Biological Engineering and Computing, MEDICON 2007, held in Ljubljana, Slovenia, June 2007. It features relevant, up-to-date research in the area.
Author: Jacalyn Lee Ouellette
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
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Book Description
Accurate and reliable in vivo measurement systems for orthopedic applications will allow a better understanding of native joint loading, gait patterns, and changes during healing and tissue regeneration. Robust and reliable telemetry units with an implantable transmitter and data acquisition software are necessary to insure long-term measurements. It was the goal of this study to update the current implantable telemetry system. Updates included using a new tablet computer for increased rates of data acquisition and encasing transmitters in a new waterproof casing. Software was developed using Labview on a Windows based Acer Iconia Tab. The Labview program allowed the user to save data to a measurement file and view the data in real time. The increased processing power of the tablet resulted in an increase in data collection rates from 29Hz to 87Hz. Interfacing the tablet computer with the telemetry system required the use of a RS-232 protocol to USB adapter. The newly developed tablet computer system was also used for load measurement collection during the most recent in vivo study. In order to insure transmitter function in vivo it was necessary to characterize the factors affecting transmission in vivo and develop transmitter and power coil designs that operated reliably. In the past implantable transmitters were noted to operate properly during bench top testing, but often failed after being placed in vivo. The two factors studied that limited power transfer to the transmitters were immersion in an aqueous environment and exposure to elevated temperatures. An aqueous environment significantly decreased power transfer by 11.9% (p-value = 0.014) relative to testing on the bench top. Additionally, a temperature increase to 40°C decreased power transfer by 6.2% (p-value = 0.017) when compared to power transfer in room temperature air. A solution that restored transmitter function required encasing transmitters in a new waterproof casing. Different casing designs made of silicone and semi-solid triglycerides were developed and tested on the bench top. Two different casing designs were used during in vivo testing and implanted into test animals. One casing design insured transmission while the other separated in vivo and did not facilitate transmission.
