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*  Impedance cardiography - Wikipedia
Impedance cardiography (ICG), also referred to as electrical impedance plethysmography (EIP) or Thoracic Electrical ... The electrical and impedance signals are processed to determine fiducial points, which are then utilized to measure and ... Impedance cardiography (ICG) is a noninvasive technology measuring total electrical conductivity of the thorax and its changes ... the placement of four dual disposable sensors on the neck and chest are used to transmit and detect electrical and impedance ...
  https://en.wikipedia.org/wiki/Impedance_cardiography
*  US3573647A - Electrical impedance converting networks - Google Patents
When a network is capacitively terminated it input port impedance is inductive. If in each of a group of capacitively ... 3. An electrical impedance network as claimed in claim 2 wherein the first impedance is a resistor, and the second impedance is ... 9. An electrical impedance network as claimed in claim 8 wherein the first impedance is a resistor, and the second impedance is ... An electrical impedance network as claimed in claim 8 wherein the first impedance is the output load impedance, and the second ...
  https://patents.google.com/patent/US3573647?oq=inventor%3A%22Arthur+R.+Hair%22
*  US20100292768A1 - High impedance active fixation electrode of an electrical medical lead - Google Patents
Electrical medical leads having active fixation electrodes, particularly helix electrodes intended to be screwed into body ... US20100292768A1 - High impedance active fixation electrode of an electrical medical lead - Google Patents. High impedance ... High impedance active fixation electrode of an electrical medical lead US7657325B2 (en) * 2005-12-30. 2010-02-02. Medtronic, ... High impedance active fixation electrode of an electrical medical lead US12782465 Active 2025-10-27 US8332051B2 (en) 2004-12-03 ...
  https://patents.google.com/patent/US20100292768A1/en
*  Professor Brian Brown - Staff and Student List - Infection, Immunity & Cardiovascular Disease - The University of Sheffield
Received the Herman P Schwan Award for Pioneering Research into Electrical Impedance Tomography at a ceremony in Gdansk, 2004. ... Indirect measurement of lung density and air volume from electrical impedance tomography(EIT) data, Physiol. Meas.. 32, 1953- ... Accuracy of detection of high-grade cervical intraepithelial neoplasia using electrical impedance spectroscopy with colposcopy, ... including the practical realisation of Electrical Impedance Tomography (EIT) and Tissue Spectroscopy as routine clinical tools ...
  https://www.sheffield.ac.uk/iicd/profiles/bbrown
*  Patent US3373360 - Automatic coaxial switch - Google Patents
Shielded electrical switching jack with impedance balancing network. US3876938 *. Jun 18, 1973. Apr 8, 1975. Kabushikikaisha ... The opposite end of spring reed 36 is fixed in the insulation of coaxial connector 44 and in electrical contact with the center ...
  http://www.google.com/patents/US3373360?dq=5,960,411
*  James B. Ranck Jr. - Wikipedia
From 1959 until 1973 Ranck analyzed the flow of electric current in brain, electrical properties of glia, electric impedance of ... Electrical impedance in the subicular area of rats during paradoxical sleep. Ranck JB Jr. Exp Neurol. 1966 Dec;16(4):416-37. ... In the early phase Ranck studied impedance in the brain, providing basic data for any studies or procedures that employ ... Which elements are excited in electrical stimulation of mammalian central nervous system: a review. Ranck JB Jr. Brain Res. ...
  https://en.wikipedia.org/wiki/James_B._Ranck_Jr.
*  US6440118B2 - Device and method to sense body substance transition - Google Patents
Providing an electrical current sensing mechanism in an operating relationship to the electrical current provided by the ... The conducting portions being adapted to be connected to an electrical source to enable electrical current to flow through the ... electrical source, whereby the electrical current sensing mechanism detects the variation in the electrical current between the ... A method of determining when a hypodermic needle penetrates into tissue, vein, or lumen by providing an electrical source; ...
  https://patents.google.com/patent/US6440118B2/en
*  US5597313A - Electrical connectors - Google Patents
The relationship of the conductor elements to the planar grounds is such as to obtain a characteristic impedance which is the ... Various electrical connectors include conductor elements extending through a support body in parallel insulated relation to one ... Electrical interconnectors and connector assemblies US3871728A (en) * 1973-11-30. 1975-03-18. Itt. Matched impedance printed ... Electrical shielding US4720770A (en) * 1986-11-03. 1988-01-19. Honeywell, Inc.. Constant impedance integrated circuit connector ...
  https://patents.google.com/patent/US5597313?oq=6978253
*  Brian Andrew Hills - Wikipedia
... a method to detect tissue bubbles using electrical impedance, the use of kangaroo rats as animal models for decompression ... Hills made a significant contribution to the mainstream scientific literature of some 186 articles between 1967 and 2006. The ...
  https://en.wikipedia.org/wiki/Brian_Andrew_Hills
*  US3340867A - Impedance plethysmograph - Google Patents
Since the current is constant, the voltage equals a constant times the impedance. If the electrical input impedance of the ... A61B5/0535-Measuring electrical impedance or conductance of a portion of the body impedance plethysmography ... Electrical signal slope polarity change detector US3730171A (en) * 1971-09-23. 1973-05-01. R Namon. Impedance related blood ... Impedance plethysmography method and apparatus US4116231A (en) * 1975-12-10. 1978-09-26. Tokyo Shibaura Electric Co., Ltd.. ...
  https://patents.google.com/patent/US3340867A/en
*  Bioelectrical Impedance Methods for Noninvasive Health Monitoring: A Review
T. K. Bera, Studies on multi frequency Electrical Impedance Tomography (EIT) to improve the impedance imaging for biomedical ... T. K. Bera and J. Nagaraju, "A Battery Based Multifrequency Electrical Impedance Tomography (BbMf-EIT) system for impedance, ... in Proceedings of the 15th International Conference on Electrical Bio-Impedance (ICEBI '13) and 14th Conference on Electrical ... in Proceedings of the 15th International Conference on Electrical Bio-Impedance (ICEBI '13) and 14th Conference on Electrical ...
  https://www.hindawi.com/journals/jme/2014/381251/ref/
*  US7628757B1 - System and method for impedance-based detection of pulmonary edema and reduced respiration using an implantable...
Techniques are also provided for controlling operation of an impedance-based reduced respiration detector, i.e. a detector ... patterns derived from thoracic impedance signals. In one example, a numerical ratio is calculated between average peak-to-peak ... based on analysis of respiratory patterns derived from a thoracic impedance signal. If the numerical ratio falls below a ... respiration cannot then reliably be derived from an analysis of respiration patterns obtained from the thoracic impedance ...
  https://patents.google.com/patent/US7628757
*  Patent US6737932 - Broadband impedance transformers - Google Patents
The invention concerns an impedance transforming device that includes a dielectric circuit board substrate. The substrate has ... the geometry of certain circuit elements may be physically large or miniaturized due to the unique electrical or impedance ... impedance. . . of. . . the. . . input. . . transmission. . . line. ;. . and. Z. 02. . . is. . . the. . . load ... impedance. . . of. . . the. . . quarter. . -. . wave. . . section. ;. Z. 01. . . is. . . the. . . ...
  http://www.google.com/patents/US6737932?dq=5,222,134
*  US20020013537A1 - Impedance spectroscopy system and catheter for ischemic mucosal damage monitoring in hollow viscous organs ...
... the impedance spectrometer obtains the complex impedance spectrum by causing two electrodes in the tip of the catheter to ... Alternatively, the complex impedance spectrum can be appropriately plotted against the spectrum of normal tissue, allowing for ... A pattern recognition system is then used to analyze the complex impedance spectrum and to quantify the severity of the mucosal ... a sensor catheter and an impedance spectrometer for electrically driving the catheter to obtain a complex tissue impedance ...
  https://patents.google.com/patent/US20020013537A1/en
*  PREFERRED-CIRCUIT TECHNIQUES FOR RECEIVER APPLICATIONS.
ELECTRICAL IMPEDANCE, MICROELECTRONICS, TRANSISTORS, RADIO RECEIVERS, RADAR RECEIVERS, FIELD EFFECT TRANSISTORS, TUNNEL DIODES ...
  http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=AD0817268
*  US4561953A - Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field -...
The concurrently applied electrical field between the electrodes causes the particles to migrate away from the permeable ... The sonic or ultrasonic field is then applied to the suspension concurrently with the electrical field, at a frequency and ... has a faster rate of water removal and achieves a lower moisture content than if only an electrical field or acoustical field ... suspension by concurrently subjecting the aqueous suspension to the action of a sonic or ultrasonic field and an electrical ...
  https://patents.google.com/patent/US4561953
*  Patent US4614905 - Charging regulator - Google Patents
Electrical storage cell life extender. US5270635 *. Feb 14, 1992. Dec 14, 1993. Solid State Chargers, Inc.. Universal battery ... A PNP transistor is included in the impedance circuit in the example described above. It is obvious that an NPN transistor may ... Device for Storing Electrical Energy. US20160043579 *. Oct 19, 2015. Feb 11, 2016. The Charles Stark Draper Laboratory, Inc.. ... Gen Electric. Battery charging control using temperature differential circuit. US4061955 *. May 19, 1976. Dec 6, 1977. The ...
  http://www.google.com/patents/US4614905?dq=7,446,777
*  Anthony Llewellyn - Wikipedia
His research interests included the development of impedance-based sensor measurement methods and instrumentation for invivo ... IEEE Transactions on Dielectrics and Electrical Insulation 16(5): 1348-1355. His current work was presented at the 2010 ... Llewellyn was selected as a scientist-astronaut by NASA in August 1967. He participated in flight training as part of NASA ... monitoring of tissue after the application of an electric field mediated plasmid delivery protocol ( ...
  https://en.wikipedia.org/wiki/Anthony_Llewellyn
*  AMS :: Appendix 3: Report from the Mathematics Department at the University of Rochester
ELECTRICAL ENGINEERING (126 schools ranked). MATERIALS SCIENCE (65 schools ranked). MECHANICAL ENGINEERING (110 schools ranked) ... Keynote speaker at the AMS/SIAM Conference on Impedance Tomography, University of Washington, 1995,, and (2) Editorial Board of ... Three of our faculty have bridged to Electrical Engineering, Chemical Engineering, and Computer Science. In each case, these ... Collaborators: Emil Wolf ( optics), Martin Feinberg ( engineering), Robert Waag ( electrical engineering and radiodology). ...
  http://www.ams.org/publicoutreach/roch-ap3
*  US3149627A - Plethysmograph - Google Patents
A61B5/0535-Measuring electrical impedance or conductance of a portion of the body impedance plethysmography ... In order that the impedance measurement be insensitive to the impedance of the electrodes and the impedance of the skin in ... Gen Electric. Body impedance bridge US3498290A (en) * 1966-04-22. 1970-03-03. Robert F Shaw. Pulsed doppler volumetric blood ... Living body impedance measurement apparatus US20050215918A1 (en) * 2004-03-24. 2005-09-29. Frantz Ann K. Thoracic impedance ...
  https://patents.google.com/patent/US3149627A/en
*  Resonance - Wikipedia
Electrical resonance occurs in an electric circuit at a particular resonant frequency when the impedance of the circuit is at a ... motion Earthquake engineering Electrical resonance Electric dipole spin resonance Formant Harmonic oscillator Impedance Limbic ... In electrical engineering, this approximate symmetric response is known as the universal resonance curve, a concept introduced ... ISBN 978-0-262-19229-3. James H. Harlow (2004). Electric Power Transformer Engineering. CRC Press. pp. 2-216. ISBN 978-0-8493- ...
  https://en.wikipedia.org/wiki/Resonance
*  Patent US4903701 - Oxygen sensing pacemaker - Google Patents
The low impedance of the cell allows it to abruptly increase its current output when required by sensor activation. Basic ... Pulsewidth electrical stimulation. US20030083728 *. Oct 30, 2002. May 1, 2003. Wilson Greatbatch. Hermetic component housing ... The high impedance of resistor 326 also allows generation of pacing pulses during telemetry of the sensed oxygen saturation ... Pulsewidth electrical stimulation. US7139613. Dec 11, 2003. Nov 21, 2006. Medtronic, Inc.. Implantable medical device ...
  http://www.google.com/patents/US4903701?dq=7395252
*  Investigation into the impact of various factors on the high voltage overhead transmission line impedances and admittances |...
Electric Power Generation, Transmission, and Distribution, 3rd ed., L.L. Grigsby, Ed. CRC Press, Taylor & Francis Group, 2012. ... Investigation into the impact of various factors on the high voltage overhead transmission line impedances and admittances. I.E ... 8. Ritzmann, D., Wright, P.S., Holderbaum, W., Potter, B. A method for accurate transmission line impedance parameter ... Eleven different scenarios were considered, each focusing on a certain factor affecting the line impedance and admittance ...
  http://vestnik.ispu.ru/en/node/596
*  Patente US3701049 - Microwave oscillator employing a cavity resonator having dielectric walls ... - Google Patentes
The cavity is matched to external loads by utilizing the dielectric walls of the resonator as a quarter-wave impedance ... said faces form an impedance transformer and a cavity resonator respectively, the electrical length of the impedance ... the electrical length of the impedance transformer being substantially one quarter of the wavelength of the resonant frequency ... the electrical length of said impedance transformer being substantially one quarter of the wavelength of the resonant frequency ...
  http://www.google.es/patents/US3701049
*  Physiogenic Hearing Impairment in Adults | Springer for Research & Development
Brooks, D. N. The role of the acoustic impedance bridge in impedance screening. Scandinavian Audiology,1974, 3,99-.104.Google ... Davis, H. Slow electrical responses of the human cortex. Proceedings of the American Philosophical Society, 1968, 112, 150-156. ... Keith, R. W. Impedance audiometry with neonates. Archives of Otolaryngology, 1973, 97, 465-467.CrossRefGoogle Scholar ... Jerger, J. Impedance terminology. Archives of Otolaryngology, 1975, 101, 589-590.CrossRefGoogle Scholar ...
  https://rd.springer.com/chapter/10.1007/978-1-4757-9760-2_3