Pulse-induced Pressure Fluctuation In Occluder Generates Electric Signal Patents (Class 600/494)
  • Patent number: 10420486
    Abstract: Methods, computer systems, and computer readable media are provided for promoting positive activity patterns for users and facilitate long-term adherence to the activity patterns, such as by providing alerts or electronic reminders to ambulate in a fashion that is responsive to an individual's actual activity patterns and behaviors and compatible with routine activities in the workplace and home. In particular, embodiments of the present invention are directed to (1) measuring physical activity patterns during the waking hours of a human, and in some embodiments continuously measuring these activity patterns; (2) automatically ascertaining whether the patterns exhibit sufficient frequency and variability of activity such as confers certain health benefits; and (3) if the patterns do not manifest such features, to adaptively provide sensible reminders at irregular within-day intervals such as are likely to establish healthy patterns of ambulation and other light activity.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: September 24, 2019
    Assignee: Cerner Innovation, Inc.
    Inventor: Douglas S. McNair
  • Patent number: 10390767
    Abstract: A method for identifying cardiac dysrhythmia behavior may include acquiring pulse volume wave data from a sensor associated with a patient, and calculating metrics associated with peaks detected therein. The metrics may include differences in amplitudes of successive pulse volume peaks and differences in the times of occurrence of successive pulse volume peaks. A dispersion analysis of the time differences, obtained during a defined time window, may result in one or more time difference dispersion metrics. Amplitude differences may be compared to an amplitude baseline, and time differences may be compared to a time baseline. Cardiac dysrhythmia behavior may be identified by a combination of an amplitude difference outside of the amplitude baseline, a corresponding time difference outside of the time baseline, and the values of one or more time difference dispersion metrics.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: August 27, 2019
    Assignee: Intelomed Inc.
    Inventors: Anne M. Brumfield, Jan K. Berkow
  • Patent number: 10349849
    Abstract: The invention refers to a method of determining an indicator that is representative for a patient's volume responsiveness, comprising the following steps: (i) measuring a sequence of pulse signals of a patient; (ii) determining an envelope(signal)-curve based on the sequence of measured pulse signals; (iii) determining a fit(envelope(signal))-function based on the previously determined envelope(signal)-curve, the fit(envelope(signal))-function representing an idealized curve progression of the envelope(signal)-curve without comprising pulse variations caused by ventilation or respiration induced heart-lung interaction; (iv) determining respiratory pulse variation signals corresponding to the pulse variations caused by ventilation or respiration induced heart-lung interaction; (v) determining an envelope(respiration)-curve based on the previously determined respiratory pulse variation signals; (vi) determining a fit(envelope(respiration))-function based on the previously determined envelope(respiration)-curve,
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: July 16, 2019
    Assignee: PHILIPS MEDIZIN SYSTEME BÖBLINGEN
    Inventor: Reinhold Knoll
  • Patent number: 10349843
    Abstract: With the blood pressure meter of the present invention, a pump unit is connected via a first fluid path to a fluid bladder. The first fluid path extends straight in the Z direction between the pump unit and the fluid bladder, sends air supplied from the pump unit to the fluid bladder or sends air inside of the fluid bladder to a valve.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: July 16, 2019
    Assignee: OMRON HEALTHCARE CO., LTD.
    Inventors: Takanori Nishioka, Shingo Yamashita, Masataka Yanagase, Chisato Uesaka, Ryosuke Doi, Hiroyasu Ariga, Keita Ikeda, Izumi Hachimaru
  • Patent number: 10307068
    Abstract: Disclosed are systems and methods for timing measurements in a non-invasive blood pressure measurement system. The systems and methods are capable of providing measurement results according to patient-specific time intervals. The disclosed systems may include a pump unit, signal acquisition circuit, user interface, clock, memory, microprocessor, power unit and communications module. The disclosed invention also contains a method for calculating an expected measurement duration. Additionally systems and methods for providing blood pressure results according to patient-specific time intervals using an expected measurement duration are discussed. Related apparatus, systems, methods and or/articles are described.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: June 4, 2019
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventor: Evan Damiano
  • Patent number: 10299726
    Abstract: A bodily information measurement apparatus includes a band-shaped belt to be wrapped around a measurement site; a main body that is connected to a base end portion in the lengthwise direction of the belt and on which a pressure detection unit and a fluid supply unit are mounted; and a fastening unit for fastening the base end portion and the leading end portion of the belt. The belt is formed by stacking an outer circumferential layer and a fluid bladder for compressing the measurement site. The bodily information measurement apparatus is attached to the measurement site due to the base end portion and the leading end portion being fastened by the fastening portion in a state in which the fluid bladder and the leading end portion of the belt overlap.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: May 28, 2019
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Yoshihide Tokko, Ryosuke Doi, Yuma Adachi, Chisato Tawara, Minoru Taniguchi, Masayuki Fukutsuka, Eisuke Yamazaki
  • Patent number: 10292603
    Abstract: A method of measuring blood pressure, including: sensing an atmospheric pressure, an applied pressure, and a blood pressure of a blood vessel delivered to a skin and outputting an electrical signal indicating a result of sensing the pressures; dividing the electrical signal into a divided electrical signal which includes a direct current (DC) signal and an alternating current (AC) signal; processing the divided electrical signal; calculating the applied pressure using the processed electrical signal; and calculating a blood pressure average using the calculated applied pressure and a swing value of the processed electrical signal.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: May 21, 2019
    Assignee: UMEDIX CORPORATION LIMITED
    Inventors: Sung Hun Woo, Yun Young Choi, Yun Seok Chang
  • Patent number: 10076253
    Abstract: A monitoring device includes a sensor band configured to be secured around an appendage of a subject, and a sensing element movably secured to the sensor band via a biasing element. The sensor band has a first mass, and the sensing element has a second mass that is less than the first mass. The biasing element is configured to urge the sensing element into contact with a portion of the appendage, and the biasing element decouples motion of the band from the sensing element. A monitoring device includes a band that is configured to be secured around an appendage of a subject. One or more biasing elements extend outwardly from the band inner surface and are configured to contact the appendage. A sensing element is secured to the band inner surface. The one or more biasing elements decouples motion of the band from the sensing element.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: September 18, 2018
    Assignee: Valencell, Inc.
    Inventors: Steven Matthew Just, Jesse Berkley Tucker, Robert Splinter, Steven Francis LeBoeuf
  • Patent number: 9977868
    Abstract: An apparatus configured to quantify and display a time buffer for at least one patient during a blood treatment session is described. A blood treatment apparatus which includes such an apparatus or is in signal communication therewith, and a method for quantifying and presenting the time buffer for at least one patient at a blood treatment session are also described, as well as a computer program, a computer program product and a digital storage medium.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: May 22, 2018
    Assignees: Fresenius Medical Care Deutschland GmbH, Fresenius Medical Care Italia S.P.A.
    Inventors: Erik Duelsner, Marcello Marazzi, Wolfgang Wehmeyer
  • Patent number: 9901264
    Abstract: A blood pressure information measurement device cuff includes a fluid bladder, an outer cover, a first loop-shaped ring, and a second loop-shaped ring. The first loop-shaped ring is provided closer to one end portion of the outer cover than the position where the fluid bladder is located, and has an insertion hole for passing through and bending back another end portion of the outer cover. The second loop-shaped ring is provided on a front surface of the outer cover, and has an insertion hole for passing through the other end portion of the outer cover that has been passed through the first loop-shaped ring. According to the blood pressure information measurement device cuff, it is possible to repeatedly recreate the same fitted state with ease when the cuff is fitted to a measurement area.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: February 27, 2018
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Reiji Fujita, Yoshihiko Sano, Minoru Taniguchi
  • Patent number: 9848782
    Abstract: Provided are a blood pressure estimation device, and the like, the device being capable of accurately estimating blood pressure. The blood pressure estimation device includes a blood pressure estimation unit which estimates a blood pressure on the basis of a pressure in a specific time period and differences between a plurality of pulse wave signals measured in the specific time period due to the pressure.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: December 26, 2017
    Assignee: NEC CORPORATION
    Inventors: Yuji Ohno, Masahiro Kubo, Kimiyasu Takoh, Katsumi Abe, Ersin Altintas, Hiroshi Imai, Osamu Tochikubo
  • Patent number: 9782086
    Abstract: Provided is a blood pressure measuring apparatus including: a pressurizing unit applying pressure to a blood vessel according to a first condition or a second condition; a pressure sensor sensing a sphygmus wave and a pressure of the blood vessel from the blood vessel under the first condition or the second condition; a standard blood pressure calculating unit for calculating a systolic standard blood pressure and a diastolic standard blood pressure; a continuous blood pressure calculating unit for calculating continuous blood pressure; and a repressurizing determining unit for determining whether pressure is applied to the blood vessel under the second condition during measuring of continuous blood pressure.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: October 10, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youn-ho Kim, Kun-soo Shin, Sang-kon Bae, Seok-chan Kim
  • Patent number: 9622667
    Abstract: A blood pressure measuring apparatus which measures a blood pressure in a step of gradually changing a cuff pressure adapted to press an artery, includes: a pulse wave detecting unit; a pulse wave interval measuring unit; a waveform information storing unit; a change trend calculating unit; a waveform information comparing unit; and a determining unit which, when first two of the pulse waves, which are successively detected at different cuff pressures, satisfy a predetermined condition: that a magnitude relationship between the amplitudes of the first two of the pulse waves is consistent with the change trend of the first two of the pulse waves; that the pulse wave interval between the first two of the pulse waves is within a predetermined range; and that the waveform information of the first two of the pulse waves approximately coincide with each other, determines that the amplitude of latter one of the first two of the pulse waves is to be used for calculating the blood pressure value.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: April 18, 2017
    Assignee: NIHON KOHDEN CORPORATION
    Inventor: Hideaki Hirahara
  • Patent number: 9545536
    Abstract: To provide a training apparatus for effective and safe performance of KAATSU training. A training apparatus is made up of a tight fitting band 100, a main device 200, a measuring segment 300, and a control segment 400. The tight fitting band 100 is wrapped around a predetermined region of a limb. The tight fitting band 100 has an air-tight inflatable bag. The compression force applied to the limb can be varied by supplying the air to and removing the air from the inflatable bag. The main device 200 controls the supply and removal of the air into and from the inflatable bag. The measuring segment 300 is attached to the limb around which the tight fitting band 100 is wrapped to measure the magnitude of a pulse wave.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: January 17, 2017
    Assignee: SATO SPORTS PLAZA CO., LTD.
    Inventor: Yoshiaki Sato
  • Patent number: 9202114
    Abstract: A method is provided for determining a threshold (81, 82) for spike (12) detection in an electrophysiological signal (11). The method comprises a step of determining an estimated envelope (31) of the electrophysiological signal (11), a step of, based on the estimated envelope (31), determining an estimated Gaussian noise, a step of determining a distribution (51) of instantaneous amplitudes of the estimated Gaussian noise, a step of determining a mode (61) of the distribution (51) of instantaneous amplitudes, and determining the threshold (81, 82) based on the mode (61) of the distribution (51) of instantaneous amplitudes.
    Type: Grant
    Filed: May 25, 2009
    Date of Patent: December 1, 2015
    Assignee: Medtronic Bakken Research Center B.V.
    Inventors: Kevin T. Dolan, Hubert Cecile Francois Martens
  • Patent number: 9161702
    Abstract: A power supply unit of an electronic sphygmomanometer includes a dry cell as a primary battery, a rechargeable battery as a secondary battery, and a power supply control circuit. A voltage detector detects a voltage (characteristic value) of the rechargeable battery, and a voltage detector detects the voltage of the dry cell. A switching control unit performs switching control of the dry cell and the rechargeable battery based on a detection result by the voltage detectors.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: October 20, 2015
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Shingo Yamashita, Akira Tsuji, Hiroyasu Ariga
  • Patent number: 9131859
    Abstract: A blood pressure measurement apparatus includes a derivation control unit that performs derivation control to derive a blood pressure of a measured person. The derivation control unit includes an envelope extracting unit to extract an envelope of a volume pulse wave based on an arterial volume signal, a differential processing unit to differentiate the envelope with respect to a cuff pressure, a maximum value extracting unit to extract a maximum value of a differential value of the envelope, and a blood pressure decision unit that decides the cuff pressure used for the differential of the maximum value as a blood pressure.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: September 15, 2015
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Yukiya Sawanoi, Kenji Fujii, Naomi Matsumura, Reiji Fujita, Kenichi Yamakoshi, Masamichi Nogawa
  • Patent number: 9119537
    Abstract: A blood pressure measuring apparatus which measures a blood pressure in a step of gradually changing a cuff pressure adapted to press an artery, includes: a pulse wave detecting unit; a pulse wave interval measuring unit; a waveform information storing unit; a change trend calculating unit; a waveform information comparing unit; and a determining unit which, when first two of the pulse waves, which are successively detected at different cuff pressures, satisfy a predetermined condition: that a magnitude relationship between the amplitudes of the first two of the pulse waves is consistent with the change trend of the first two of the pulse waves; that the pulse wave interval between the first two of the pulse waves is within a predetermined range; and that the waveform information of the first two of the pulse waves approximately coincide with each other, determines that the amplitude of latter one of the first two of the pulse waves is to be used for calculating the blood pressure value.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: September 1, 2015
    Assignee: NIHON KOHDEN CORPORATION
    Inventor: Hideaki Hirahara
  • Patent number: 9113791
    Abstract: Measured blood pressure data is stored in a memory in association with information related to a measurement time. In response to manipulation of a manipulation portion (memory recall switch), blood pressure data associated with the measurement time within a prescribed time period (for example, 10 minutes) from the measurement time of reference blood pressure data, among the blood pressure data stored in the memory, is retrieved as specific data. Then, an average value is calculated based on the specific data, and the calculated average value is displayed as an evaluation index.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: August 25, 2015
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Hiroshi Kishimoto, Yukiya Sawanoi, Takahide Tanaka, Kenji Eda
  • Patent number: 9060695
    Abstract: Systems and methods are provided for patient monitors which apply phase detection operations to analog signals to identify differential pulse transit time (DPTT). Photoplethysmograph (PPG) signals measured at two sensor sites may be processed by a phase detection system to identify phase information that allows the calculation of a DPTT. The phase detection system may process analog PPG signals in the analog domain to determine phase information. In some embodiments, the phase detection system may process optical oximetry sensor signals to determine phase information using, for example, interferometric methods.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: June 23, 2015
    Assignee: Covidien LP
    Inventor: Daniel J. Peters
  • Patent number: 9044537
    Abstract: A method for determining status of an implanted catheter includes acquiring raw pressure data from a pressure sensor of in an implantable infusion device. The pressure sensor is in communication with a lumen of the catheter operably coupled to the infusion device. The catheter has a delivery region, in communication with the lumen, intended to be positioned in a fluid-filled target location of a patient. The method further includes filtering the raw pressure data to remove the DC component, leaving the AC component within a relevant physiological frequency range; rectifying the AC component to produce a rectified pressure signal; calculating a mean magnitude of the rectified signal; and determining whether the mean magnitude is below a predetermined threshold. If the mean magnitude is below the threshold, the catheter is determined to be in a state other than a normal state.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: June 2, 2015
    Assignee: Medtronic, Inc.
    Inventors: Scott L. Kalpin, Lucien Bell Solefack, Keith A. Miesel
  • Publication number: 20150094602
    Abstract: A control amplitude and a control frequency of a voltage applied to a piezoelectric pump are determined, control is carried out so that a voltage at the determined control amplitude and control frequency is applied to the piezoelectric pump, and a blood pressure value is calculated based on a cuff pressure detected by a pressure detection unit during inflation when the cuff pressure is increased by the piezoelectric pump. The amplitude of the voltage is controlled in predetermined steps, and a voltage having an amplitude that is a value above the control amplitude by at least one step and a voltage having an amplitude that is a value below the control amplitude by at least one step are applied, in a predetermined order, so that the control is the same or essentially the same as when a voltage at the determined control amplitude is applied.
    Type: Application
    Filed: October 26, 2012
    Publication date: April 2, 2015
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Yuki Yamashita, Tatsuya Kobayashi, Toshihiko Ogura, Yoshihiko Sano, Yukiya Sawanoi
  • Publication number: 20150080751
    Abstract: Blood pressure measuring device with a flexible pressure collar, to surround a body part at least partially, with a pressure sensor element, wherein the shape of the pressure collar can be adapted to the outer contour of the body part, the pressure collar being at least partially inelastic. Further, the flexible pressure collar for a blood pressure measuring device to the relates pressure collar being inelastic and the shape being adapted to the outer contour of a body part. A method for non-invasive blood pressure measurement on a patient's body part with a blood pressure measuring device includes: positioning the pressure collar on the body part; setting the pressure collar such that it exerts pressure in the pulsatile region of the patient on the body part; and recording the pulsation for the period of at least one breathing cycle of the patient in the form of pulsation signals.
    Type: Application
    Filed: February 3, 2012
    Publication date: March 19, 2015
    Inventors: Stephan Regh, Tobias Thomamueller, Reinhold Knoll, Ulrich Pfeiffer
  • Publication number: 20150005649
    Abstract: A blood pressure meter includes an air bladder for attachment to a measurement area, a pressure sensor, a pump a valve, drive circuits, a CPU connected to the pressure sensor and the drive circuits, for controlling the adjustment of the internal pressure of the air bladder and calculating a blood pressure value based on a change in the internal pressure resulting from the adjustment, and a holding portion, into and from which air can flow from and to the air bladder, that has a lower volume than the air bladder. The air can flow from the holding portion into the air bladder in the case where a predetermined pressure is applied to the holding portion. The CPU starts the adjustment of the internal pressure in the case where a change in the internal pressure prior to the start of the adjustment of the internal pressure is a predefined change.
    Type: Application
    Filed: October 29, 2012
    Publication date: January 1, 2015
    Applicant: OMRON HEALTH Co., Ltd.
    Inventors: Yoshihisa Miwa, Takeyasu Hashimoto
  • Publication number: 20140364749
    Abstract: Blood pressure measurement devices comprising a transducer may have error introduced when the transducer is placed in mechanical communication with a vein or artery. This error may be based on alignment, applanation, calibration, and the contact based stress required to obtain a signal from pressure in a vein or artery. The present invention teaches isolating and removing this error from the blood pressure system which may increase the accuracy of the measurement. Calibration is also provided.
    Type: Application
    Filed: October 21, 2011
    Publication date: December 11, 2014
    Applicant: Drexel University
    Inventors: Kushal Varma, Ahmadreza Pourshoghi, Nathaniel Magee, Atman Shah, Sagar Shah, Marek Swoboda, Ryszard M. Lec
  • Publication number: 20140276146
    Abstract: An electronic blood pressure meter includes a cuff that is to be worn on a measurement area, a piezoelectric pump that adjusts a pressure applied to the cuff, a drive circuit that drives the piezoelectric pump, and a controller that outputs, to the drive circuit, a pulse signal defining a driving timing of the piezoelectric pump. The drive circuit includes a switching circuit for switching a connection relationship between respective voltages applied to both ends of the piezoelectric pump in response to corresponding first and second driving signals, and a signal generation circuit that outputs the first and second driving signals based on the pulse signal outputted from the controller. The signal generation circuit has a signal conditioning circuit hat adjusts timings of the first and second driving signals so that the phases of the first and second driving signals do not overlap.
    Type: Application
    Filed: October 5, 2012
    Publication date: September 18, 2014
    Inventors: Yuki Yamashita, Tatsuya Kobayashi
  • Publication number: 20140207009
    Abstract: A blood pressure measurement device corrects the error caused by blood congestion. The device includes a blood pressure measurement section that calculates a blood pressure value of a patient based on the cuff pressure and pulse waves detected by a pressure sensor, a blood congestion determination section that determines a degree of blood congestion that occurred at a peripheral side of the measurement location due to the cuff pressure on the measurement location in accordance with a predetermined method, a blood pressure correction section that calculates a corrected blood pressure value based on the degree of the blood congestion, and a display that displays the corrected blood pressure value.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Inventor: Yukiya Sawanoi
  • Patent number: 8777862
    Abstract: Improved apparatus and methods for non-invasively assessing one or more hemodynamic parameters associated with the circulatory system of a living organism. In one aspect, the invention comprises an apparatus adapted to automatically and accurately place and maintain a sensor (e.g., tonometric pressure sensor) with respect to the anatomy of the subject. The apparatus comprised of a sensor device removably coupled to an actuator which is used to position the sensor during measurements. Methods for positioning the alignment apparatus and sensor, and operating the apparatus, are also disclosed.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: July 15, 2014
    Assignee: Tensys Medical, Inc.
    Inventors: Simon E. Finburgh, Andrew S. Katayama, Ronald J. Vidischak, Anthony T. Butler, Kurt Blessinger
  • Publication number: 20140194755
    Abstract: The circulatory dynamics measurement apparatus comprises: a blood pressure-computing unit, which calculates the maximum blood pressure value (SYS); a vascular sclerosis-computing unit, which calculates the vascular sclerosis index (VSI); and a display unit for displaying a graph having a horizontal axis that represents the maximum blood pressure and a vertical axis that represents the vascular sclerosis index. The display unit displays the position determined by the calculated maximum blood pressure value and the calculated vascular sclerosis index in the plotting area of the graph.
    Type: Application
    Filed: August 30, 2012
    Publication date: July 10, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Kazuhiro Ide, Masato Izumikawa
  • Patent number: 8764668
    Abstract: A medical blood pressure transducer that provides an identifier to a monitor that conveys characteristics of the transducer. The monitor can use the information to decide whether to function, or in calibration of the system. The transducer may be part of a disposable blood pressure monitoring system, and may include two transducers closely-spaced to provide two separate but identical outputs. In this way, the transducer may be connected to both a patient monitor and a cardiac output monitor at the same time measurements from a single line can be simultaneously supplied to two separate monitoring devices (for example a patient monitor and a cardiac output monitor). The identifier for the transducer may be circuitry, specifically a resistance/capacitance (RC) combination that possesses a characteristic time constant.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: July 1, 2014
    Assignee: Edwards Lifesciences Corporation
    Inventors: Luchy Roteliuk, Weldon Dean West, Douglas Meyer, Jr., Luong N. Phan
  • Publication number: 20140180144
    Abstract: Disclosed is a method for implementation by one or more data processors including acquiring noninvasive blood pressure data using an inflatable cuff applied around a portion of a patient by inflating the cuff to a pressure above the patient's systolic blood pressure, and detecting a first oscillation pulse within the cuff during a deflation step. The method also includes acquiring electrocardiogram (ECG) data from the patient by detecting an ECG waveform corresponding to a first heartbeat using an ECG lead coupled to the patient, classifying the ECG waveform as normal or not normal, aligning, the first oscillation pulse to the ECG waveform corresponding to the first heartbeat if the ECG waveform is classified normal or rejecting the first oscillation pulse if the ECG waveform is classified not normal, and calculating the blood pressure using the aligned first oscillation pulse. Related apparatus, systems, methods and/or articles are described.
    Type: Application
    Filed: April 26, 2012
    Publication date: June 26, 2014
    Applicant: DRAEGER MEDICAL SYSTEMS, INC.
    Inventors: Yu Chen, Mohamad M. El-Ghouch, Zhe Zhang
  • Patent number: 8761865
    Abstract: The invention provides a device 10 for analysis of tissue cells 12 in a living body, the device comprising a stylet 14, the stylet comprising a clad optical fiber senior 18 enveloped in a tubular jacket 20, wherein an unclad area 24 of the fiber and a jacket window 26 corresponding to the unclad area are proximate to the distal end 28 thereof, the optical fiber 18 being linked at a proximate end 30 to receive light from a light source 32, the device further including a light analyzer 34 for measuring qualities of output light at the depth at which the unclad area 24 is positioned in the body during use, an electronic data processor 36 being linked between the light analyzer 34 and a display 38 provided to show real-time data regarding any area 40 evidencing a change in optical properties of body tissues being successively examined.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: June 24, 2014
    Inventor: Anatoly Babchenko
  • Patent number: 8753284
    Abstract: A device may include a vibration sensor configured to sense blood flow in a lumen of a person; a cuff coupled to the vibration sensor and configured to contact a limb of the person; a cuff pressurizer coupled to the cuff, the cuff pressurizer configured to adjust a compressive force of the cuff on the lumen; and an energy-generating apparatus coupled to the cuff, the energy-generating apparatus configured to generate energy from a depressurization of the cuff.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: June 17, 2014
    Assignee: Elwha, LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare, Gary L. McKnight, Lowell L. Wood, Jr.
  • Patent number: 8747328
    Abstract: The systems and methods monitor a subject's blood pressure under a constant applied pressure. Measurements taken from a pressure measuring element and a pulse sensing element are combined to determine the subject's systolic and diastolic pressure. The systolic pressure is measured directly by the pressure measuring element, and the diastolic pressure is determined indirectly by using a pulse waveform to extrapolate portions of a pressure waveform. The systems and methods can be employed in any number of applications, including, without limitation, taking a single reading from a subject, continuously monitoring a subject, or evaluating a subject during physical exertion.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: June 10, 2014
    Assignee: Raytheon BBN Technologies Corp.
    Inventor: Larry M. Tichauer
  • Patent number: 8747326
    Abstract: A manual pressurization electronic sphygmomanometer includes a specific component detection unit for detecting a synthetic wave of a manual fluctuation wave and a pressure pulse wave as a specific component from a cuff pressure signal obtained during pressurization; a derivation processing unit for deriving a pressurization target value based on the detection result of the specific component detection unit; and a display unit for notifying to urge pressurization up to the pressurization target value. The derivation processing unit calculates a pulse wave component based on the waveform before and after the specific component and the waveform of the specific component, and determines a value obtained by adding a predetermined value to the systolic blood pressure value estimated based on the amplitude of the pulse wave component as the pressurization target value.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: June 10, 2014
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventor: Hiroyuki Kinoshita
  • Patent number: 8740804
    Abstract: Provided are a blood pressure measuring apparatus capable of effectively eliminating the influence which the volume change in an upstream portion of an occluding cuff has on a pulse wave detection cuff in an oscillometric double-cuff system, increasing the S/N ratio of systolic blood pressure detection, and accurately measuring the blood pressure with an inexpensive arrangement, a cuff, and a blood pressure measuring method. The apparatus includes a first pipe (106) connected to an occluding air bag (108) and sub air bag (109). The first pipe is connected to the sub air bag, and the sub air bag is connected to the occluding air bag via an entirely foldable rod shape member (111) capable of maintaining a hollow portion. The sub air bag is laid over the occluding air bag by folding a middle pipe.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: June 3, 2014
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Takahiro Souma
  • Patent number: 8740803
    Abstract: A system and method for processing oscillometric data from a plurality of pressure steps to determine the blood pressure of a patient. A heart rate monitor connected to the patient acquires the patient's heart rate. A time-to-frequency domain converter receives oscillometric data and converts the oscillometric data into the frequency domain. Based upon the calculated heart rate, the system and method filters the frequency domain oscillometric signal with pass bands centered at the fundamental frequency and at least one fundamental frequency. The energy of the frequency domain signal within the pass bands is compared to at least a portion of the energy of the frequency domain oscillometric signal outside of the pass bands. Based upon the comparison, the signal determines whether the signal at the current pressure step should be utilized in calculating the blood pressure of the patient.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: June 3, 2014
    Assignee: General Electric Company
    Inventors: Lawrence T. Hersh, Sai Kolluri
  • Patent number: 8734354
    Abstract: A sphygmomanometer measures blood pressure in accordance with an oscillation in an artery wall, resulting from an arterial pulse correspondent with a change in cuff pressure. It comprises a cuff that is connected to the sphygmomanometer main body by a tube, a display unit for displaying the results of blood pressure measurements, and an air supply unit for supplying air to, and thus pressurizing, the cuff, which is detachable from the sphygmomanometer main body. The air supply unit is screwed into the sphygmomanometer main body with a screw assembly, and the screwed-in state is preserved by a caulking ring. The air supply unit also comprises a filter for keeping dust from entering the sphygmomanometer main body.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: May 27, 2014
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Hiroshi Mochizuki
  • Patent number: 8734355
    Abstract: The invention is in one embodiment an apparatus and a method for measuring the blood pressure of a vertebrate subject. The apparatus uses an inflatable chamber with a sensor to detect signals indicative of a blood pressure of the subject during an inflation interval of the inflatable chamber. If secondary motion or artifact signals are detected, the apparatus and method determine whether the secondary signals are below a predetermined value, and if so, complete the measurement. If the signals indicate that the measurement is not accurate, the system and method immediately institute a measurement of the blood pressure during a deflation interval, which can include a step deflation interval. In the event that the subject is identified as a neonate, the system and method immediately measure using the deflation interval procedure.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: May 27, 2014
    Assignee: Welch Allyn, Inc.
    Inventors: Ty Whitaker, Stephen C. Wilson, Knut Spang, Thaddeus J. Wawro, John A. Lane
  • Patent number: 8727999
    Abstract: A pulse measurement device for more precisely measuring a pulse, including a sensing unit to sense a photoplethysmography (PPG) signal and an acceleration signal obtained from a user, a pressure control unit to control pressure applied to the sensing unit, and a signal determination unit to determine an optimum pressure range by analyzing the PPG signal varying with a change of the pressure applied to the sensing unit by the pressure control unit and to determine an exercise level of the user by using the acceleration signal.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: May 20, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn Ho Kim, Kun Soo Shin
  • Patent number: 8721557
    Abstract: Embodiments of the present disclosure relate to a system and method for determining a physiologic parameter of a patient. Specifically, embodiments provided herein include methods and systems for non-invasive determination of blood pressure. Information from a photoplethysmography sensor may be used to determine a systolic pressure, which in turn may be used to control a deflation pattern of a blood pressure cuff.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: May 13, 2014
    Assignee: Covidien LP
    Inventors: Bo Chen, Youzhi Li, Daniel Lisogurski
  • Patent number: 8696580
    Abstract: The disclosed is an arteriosclerosis evaluating apparatus capable of easily separating pulse wave data detected at one measurement site into an incident wave and a reflected wave and capable of easily determining and evaluating the degree of arteriosclerosis. The pulse wave transmitted through an artery is detected at one site of a living body by a pulse wave detection device, and the detected pulse wave is fitted with a fitting function by a breakdown device so that the detected pulse wave can be broken down into an incident wave and a reflected wave. The degree of arteriosclerosis is evaluated from the amplitude intensities (i.e., peak intensities) of the incident wave and the reflected wave broken down from the pulse wave.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: April 15, 2014
    Assignees: The Doshisha, Murata Manufacturing Co., Ltd.
    Inventors: Mami Matsukawa, Yoshiaki Watanabe, Masashi Saito, Takaaki Asada, Mio Furuya
  • Patent number: 8684940
    Abstract: An electronic sphygmomanometer acquires a patient ID and recommended site information read from an ID card before measurement. The recommended site indicating the site to be attached to a cuff of a left site or a right site is thereby specified for every person to be measured (patient ID). Thereafter, the site to be attached to the cuff is guided by notifying the specified recommended site to the person to be measured.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: April 1, 2014
    Assignee: Omron Healthcare Co., Ltd.
    Inventor: Tameo Ashida
  • Publication number: 20140066793
    Abstract: A method is provided for determining blood pressure for a subject using a sphygmomanometer. The method includes: measuring an oscillometric cuff pressure waveform of the subject using the sphygmomanometer; representing the measured waveform with a physical model accounting for mechanics of the cuff, an artery and coupling between the cuff and the artery; determining the model unknowns from the measured waveform; and determining blood pressure for the subject using the determined model.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: Board of Trustees of Michigan State University
    Inventors: Ramakrishna Mukkamala, Jiankun Liu, Jin-Oh Hahn
  • Patent number: 8652055
    Abstract: A pulse wave data correcting method in an electronic hemomanometer which is designed to time-differentiate signals each formed by superposing a pulse wave amplitude component on a cuff pressure, to compute an envelope consisting of the time-differentiated signals, to detect the maximal value in the computed envelope, to sort the time-differentiated signals generated prior to the maximal envelope value in ascending order, to sort the time-differentiated signals generated after the maximal envelope value in descending order, and to form an envelope consisting of the sorted time-differentiated signals.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: February 18, 2014
    Assignee: Shisei Datum Co., Ltd.
    Inventor: Yukiyoshi Saitou
  • Publication number: 20140046201
    Abstract: Improved apparatus and methods for non-invasively assessing one or more parameters associated with systems such as fluidic circulating systems (e.g., the circulatory system of a living organism). In a first aspect, an improved method of continuously measuring pressure from a compressible vessel is disclosed, wherein a substantially optimal level of compression for the vessel is achieved and maintained using dynamically applied dither perturbations (e.g., modulation) on the various axes associated with the vessel. In a second aspect, an improved apparatus and method are provided for monitoring hemodynamic parameters, such as blood pressure, in a continuous and non-invasive manner while operating under a single unifying scheme. One variant of this scheme using a simulated annealing (SA) type approach to determining and maintaining an optimal operating state.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 13, 2014
    Inventors: ANDREW S. KATAYAMA, Todd A. Keitel, Manouchehr Goharlaee, Stuart L. Gallant, Warren B. Craycroft
  • Patent number: 8647282
    Abstract: The invention discloses an apparatus and method for measuring a blood pressure. In particular, the method and apparatus according to the invention are capable of eliminating motion artifacts induced by, for example, talking, irregular breathing, frequent swallowing, coughing, shaking, and so on motions of a subject. The method and apparatus according to the invention utilizes a set of fuzzy logic rules and a curve-fitting way to eliminate the motion artifacts.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: February 11, 2014
    Assignee: Quanta Computer Inc.
    Inventors: Yi-Cheng Shih, Shih-Chieh Yen
  • Publication number: 20140012147
    Abstract: A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: Nellcor Puritan Bennett Ireland
    Inventors: Luya Li, Rakesh Kumar Sethi, Ming Sun, Alexander Yuk Sit, Yong Liu
  • Publication number: 20130324865
    Abstract: A device is sued for measuring arterial pressure. The device includes a body in the form of a wrist-watch, an element for fastening the latter on a user's wrist, said element being in the form of a wristband designed so that the clamping force of the wristband on the wrist can he adjusted. A pulsed wave sensor is arranged on the element for fastening the body on the user's wrist. The device includes an analog-digital converter, a filter for isolating the alternating component of a signal, and a measurement data indicator, a voice synthesizer and a pulsed wave sensor position indicator, which are integrated by their inputs.
    Type: Application
    Filed: September 7, 2011
    Publication date: December 5, 2013
    Inventors: Igor Yavelov, Vladimir Hudoley, Sergey Vlasov
  • Publication number: 20130226010
    Abstract: A blood pressure measurement apparatus includes a blood pressure measurement unit, a bio-information acquisition unit, a depth calculation unit, a storage unit and a decision unit. The bio-information acquisition unit continuously acquires bio-information of a subject. The depth calculation unit repeatedly calculates depth indices each indicating a sleep stage of the subject on the basis of the acquired bio-information. The storage unit stores the calculated depth indices. The decision unit decides whether the sleep stage of the subject in sleep satisfies a starting condition, on the basis of a first depth index stored in the storage unit and a second depth index calculated by the depth calculation unit. The blood pressure measurement unit measures blood pressure data of the subject when the sleep stage is decided to satisfy the starting condition.
    Type: Application
    Filed: February 22, 2013
    Publication date: August 29, 2013
    Applicant: TANITA CORPORATION
    Inventor: TANITA CORPORATION