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Biomedical Engineering, IEEE Transactions on

Issue 5 • Date Sept. 1971

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Displaying Results 1 - 17 of 17
  • Table of contents

    Publication Year: 1971 , Page(s): c1
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    Freely Available from IEEE
  • IEEE Engineering in Medicine and Biology Group

    Publication Year: 1971 , Page(s): c2
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  • The Solid-State Lithium Battery: A New Improved Chemical Power Source for Implantable Cardiac Pacemakers

    Publication Year: 1971 , Page(s): 317 - 324
    Cited by:  Papers (9)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3391 KB)  

    A new solid-state battery, designed for implantable prosthetics is described. Single cell voltage is 2.8 V. The anode is metallic lithium. The cathode is a proprietary iodide. The electrolyte is a crystal, lithium iodide. Cell impedance at 37°C for a typical pacemaker battery is under 1000¿ at beginning of life (BOL) and 16 000 ¿ at end of life (EOL). The simple chemistry of the cell precludes ... View full abstract»

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  • Telemetry in a Large Hospital-A Look at the Future

    Publication Year: 1971 , Page(s): 325 - 329
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    The present value of telemetry in clinical care is limited. In ten years, however, it is possible that 40 patients will be under surveillance by telemetry at any one time in a 1000 bed hospital, with at least three channels of information associated with each patient. The technological base for broad medical use of telemetry exists already except for the serious lack of practical transducers. The ... View full abstract»

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  • An Optimally Controlled Respirator

    Publication Year: 1971 , Page(s): 330 - 338
    Cited by:  Papers (7)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3033 KB)  

    An optimally controlled respirator was developed. It has three main features: 1) ventilation is controlled by the patient's metabolic rate from continuously measured C02 output, 2) physiologic dead space approximated as a linear function of tidal volume is used to estimate alveolar ventilation, and 3) respiratory rate is computed to minimize ventilatory work. View full abstract»

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  • Spontaneous Voltage Fluctuations in Glass Microelectrodes

    Publication Year: 1971 , Page(s): 339 - 351
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3514 KB)  

    The spontaneous fluctuations of voltage across a glass microelectrode have been studied as a function of the average difference in voltage (V) across the electrode and the concentration of internal (n2) and external (n1) salt solutions. A stationary fluctuation was observed, with a mean square value many times greater than that calculated from the Nyquist formula for noise due to the... View full abstract»

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  • Performance of a Tuned Ferrite Core Transcutaneous Transformer

    Publication Year: 1971 , Page(s): 352 - 359
    Cited by:  Papers (4)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3208 KB)  

    The development of a practical power transmission system for a rechargeable artificial heart requires not only a means of efficiently coupling the required electromagnetic energy across the skin, but also a charge regulator, a primary cooling loop, and a suspension system for aligning the cores. This paper describes a tuned transcutaneous transformer which utilizes ferrite pot cores with Litz wind... View full abstract»

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  • An Adaptive Method for Testing for Change in Digitized Cardiotachometer Data

    Publication Year: 1971 , Page(s): 360 - 365
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2015 KB)  

    An adaptive method for detecting change in digitized cardiotachometer recordings has been developed which takes into account the nonstationary statistical structure of the data. The digitized data are smoothed to reduce the variance at high frequencies caused by discontinuities inherent in cardiotachometer output. Based on a first-order autoregression, which has been shown to be appropriate for he... View full abstract»

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  • An Analysis of Frequency Modulation Circuit Using p-n Junction Varactors

    Publication Year: 1971 , Page(s): 366 - 375
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2392 KB)  

    Simple circuits performing oscillation-frequency modulation functions using one active device and p-n junction type varactors are studied. The performance of the common circuit is analyzed. Equations are derived to determine signal-to-frequency deviation, transducer gain, frequency deviation, input impedance, distortion, maximum signal, noise and signal sensitivity, dynamic range, and maximum reso... View full abstract»

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  • System for the Measurement of Velocity of Microscopic Particles in Liquids

    Publication Year: 1971 , Page(s): 376 - 377
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1141 KB)  

    A system for the measurement of velocity of particles suspended in liquids was developed, based on the on-line computation of the time to maximum cross correlation between the optical signatures made by particles, as their image traverses two adjacent photo-detectors aligned in the direction of flow. Cross correlation computation is performed with a commercially available computer, and the time to... View full abstract»

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  • An Instrument for the Accurate Measurement of MEFV Parameters

    Publication Year: 1971 , Page(s): 378 - 379
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1424 KB)  

    An instrument which measures maximally forced expiratory airflow directly, computes its integral (lung volume decrement ), and interrupts the storage oscilloscope display of this flow-volume trajectory at fixed but adjustable intervals of time is described. This new device is portable and does not involve bellows or a water-filled canister. View full abstract»

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  • Detection of Phase Characteristics of Alpha Waves in the Electroencephalogram

    Publication Year: 1971 , Page(s): 379 - 382
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (989 KB)  

    A method of obtaining a continuous record of the average center frequency of the EEG and the instantaneous phase fluctuations about that average is described. A phase-locked loop with a wide range phase detector has been implemented on a hybrid computer for this purpose. This new technique provides another way to extract information from the EEG and tends to emphasize the time-varying features of ... View full abstract»

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  • A Self-Centering Respiration Monitor for Small Animal Research

    Publication Year: 1971 , Page(s): 382 - 383
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1423 KB)  

    It is necessary to monitor the physiological state of small animals being maintained under anesthetic. One parameter that may be observed is the respiratory pattern which is particularly important when using anesthetics known to depress respiratory function. A respiration monitor is described which indicates nasal air flow and which has a self-centering feature to eliminate drift. This feature ena... View full abstract»

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  • A Universal Biological Interval Timer

    Publication Year: 1971 , Page(s): 383 - 386
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1487 KB)  

    A circuit for the measurement of biological time intervals from 0.1 ms to 10 s is described. This device accepts biopotentials, stimuli, or transducer signals to produce an instantaneous dc voltage readout proportional to the time between two successive input signals. Digital preconditioning and analog integration are used to simplify the design. View full abstract»

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  • Keyword Abstracts

    Publication Year: 1971 , Page(s): 387 - 388
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    Freely Available from IEEE
  • IEEE Transactions on Bio-Medical Engineering Statement of Editorial Policy

    Publication Year: 1971 , Page(s): 388-a
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    Freely Available from IEEE
  • Institutional listings

    Publication Year: 1971 , Page(s): 388b
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    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Biomedical Engineering contains basic and applied papers dealing with biomedical engineering. Papers range from engineering development in methods and techniques with biomedical applications to experimental and clinical investigations with engineering contributions.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Bin He
Department of Biomedical Engineering