Electric Signal Generated By Sensing Means Responsive To Pulse Or Korotkoff Sounds Patents (Class 600/493)
  • Patent number: 10390712
    Abstract: Disclosed are a blood pressure estimation device and the like which make it possible to estimate blood pressure with a high degree of accuracy. A blood pressure estimation device (101) has: a pulse wave calculation unit (102) for, on the basis of a pressure signal in a specific period and a pulse wave signal (2001) measured on the basis of the pressure of the pressure signal in the specific period, calculating a plurality of times at which a pulse signal satisfies prescribed conditions, a period representing the difference between the times, and a pressure value of the pressure signal during the period, and also calculating pulse wave information associating the period and the pressure value; and a blood pressure estimation unit (103) for estimating the blood pressure of the pulse wave signal (2001) on the basis of the pulse wave information.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 27, 2019
    Assignee: NEC CORPORATION
    Inventors: Kimiyasu Takoh, Katsumi Abe, Yuji Ohno, Masahiro Kubo, Hiroshi Imai, Ersin Altintas, Osamu Tochikubo
  • Patent number: 10349842
    Abstract: A blood pressure measuring apparatus, which measures a blood pressure of a living body, includes: a cuff-pressure control unit which controls a cuff pressure of a cuff that presses a part of the living body; an oscillation signal detection unit which detects an oscillation signal from the cuff pressure; a blood pressure specification unit which specifies systolic and diastolic blood pressures as the blood pressure of the living body from the oscillation signal; and a blood pressure determination unit which determines whether systolic and diastolic blood pressures are appropriate or not.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: July 16, 2019
    Assignee: Nihon Kohden Corporation
    Inventors: Takashi Usuda, Yoshiharu Kikuchi, Hideaki Hirahara, Naoki Kobayashi, Katsuyoshi Suzuki
  • Patent number: 10321874
    Abstract: A mobile healthcare device and method of operating the same are provided. The method includes setting a mode of the mobile healthcare device to a measurement mode, displaying a screen for guiding a user to maintain a predetermined position during the measurement mode, and, in response to a predetermined amount of time passing from a time at which the screen begins to be displayed, obtaining state information of the user based on bio information of the user, the bio information being received from a sensor.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: June 18, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kunsun Eom, Kak Namkoong, Yeolho Lee, Myounghoon Jung, Seongho Cho
  • Patent number: 10251567
    Abstract: An apparatus for an accurate automated non-invasive measurement of blood pressure waveform using brachial (occlusion) cuff pressurized above systolic pressure and using differential pressure sensor. The methodology involves measurement in suprasystolic mode and in utilization and construction of the device followed by algorithms for processing and analysis of measured blood pressure pulse waves and assessment of hemodynamic parameters of human cardiovascular system. The device includes an electro-pump connected to the collar device, a differential pressure sensor, pressure senor A, pressure sensor B, valve, closing a valve and the air reservoir. The cuff is wrapped around a person's arm. The values of the instantaneous pressure in the pneumatic portion of the device are converted into an electric signal by the pressure sensor A, pressure sensor B and the differential pressure sensor.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: April 9, 2019
    Assignees: Czech Technical University in Prague, Faculty of Electrical Engineering, Czech Technical University in Prague, Czech Institute of Informatics, Robotics and Cybernetics
    Inventors: Vratislav Fabian, Vaclav Kremen, Martin Dobias
  • Patent number: 10213206
    Abstract: A device for performing a remote ischemic conditioning treatment. The device includes an inflatable cuff and a cartridge which is a source of gas for inflating the cuff. A first valve controls the flow of gas from the cartridge to the cuff so as to maintain a predetermined pressure in the cuff during an ischemic period. A second valve allows gas to escape from the cuff during a reperfusion period of the remote ischemic conditioning treatment. A controller which may be battery-powered is used to control the opening and closing of the valves. The cartridge may contain a gas, or materials which, under certain conditions, react to produce a gas. The chemical reaction may be initiated by an electrical pulse or signal from the controller.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: February 26, 2019
    Assignee: CellAegis Devices Inc.
    Inventors: Rocky Eugene Ganske, Raymond Cracauer, Lahav Gil
  • Patent number: 10210774
    Abstract: A method and apparatus to simulate arterial blood pressure pulses to train clinicians in the use of oscillometric blood pressure monitors is described. The apparatus comprises a bladder or blood pressure cuff placed in a rigid enclosure with a known volume. The enclosure also has an opening, with a pressure plate placed between the opening and the bladder. An actuator, such as a servo motor with an arm, is attached to the outside of the enclosure next to the opening such that the arm of the servo motor or actuator may exert a force on the pressure plate, which in turn impinges the bladder. The bladder may be connected to a pressure sensor and an oscillometric blood pressure monitor. The force exerted by the actuator may be controlled in a feedback loop by a controller connected to the actuator and the pressure sensor.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: February 19, 2019
    Assignee: Dynasthetics, LLC
    Inventor: Joseph Orr
  • Patent number: 10194811
    Abstract: Disclosed are a blood pressure device, etc., that is capable of highly accurate of blood pressure. The blood pressure device (101) has a blood pressure unit (102) that: finds a specific blood pressure related to pulse wave information (2002), by browsing blood pressure information (2001) associating the pulse wave information and blood pressure related to pulse wave signals caused by blood pressure during a specific period and measured, the pulse wave information associating blood pressure during the specific period and the pulse wave signals; and estimates the blood pressure relating to the pulse wave information (2002) on the basis of the found specific blood pressure.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 5, 2019
    Assignee: NEC CORPORATION
    Inventors: Yuji Ohno, Masahiro Kubo, Kimiyasu Takoh, Katsumi Abe, Ersin Altintas, Hiroshi Imai, Osamu Tochikubo
  • Patent number: 10169543
    Abstract: Embodiments include a system for displays cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart and create a model representing at least a portion of the patient's heart based on the patient-specific data. The computer system may determine at least one value of the blood flow characteristic within the patient's heart based on the model. The computer system may also display a report comprising a representation of at least one artery corresponding to at least a portion the model, and display one or more indicators of the value of the blood flow characteristic on a corresponding portion of the at least one artery.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 1, 2019
    Assignee: HeartFlow, Inc.
    Inventors: Charles A. Taylor, Gregory R. Hart
  • Patent number: 10105068
    Abstract: A pumpless wearable sphygmomanometer includes a wearable element, a first fluid strip, a second fluid strip and a control module. A first side of the wearable element is for contacting with a wearer. The first and second fluid strips are arranged in parallel on the first side and spaced apart for a predetermined distance. The control module is disposed on the wearable element and includes a first pressure sensing element, a second pressure sensing element and a processing unit. The first and second pressure sensing elements communicate with the first and second fluid strips, respectively, and are configured to sense a first fluid pressure and a second fluid pressure in the first and second fluid strips, respectively. The processing unit is electrically connected to the first and second pressure sensing elements and configured to analyze a difference between the first fluid pressure and the second fluid pressure.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 23, 2018
    Assignee: NANO-SECOND TECHNOLOGY CO., LTD.
    Inventor: Pei-Sung Chuang
  • Patent number: 10064561
    Abstract: A CPU detects pulse waves in a pressure signal of a cuff detected during a period of reducing pressure applied by the cuff to a measurement site and acquires blood flow sound signals corresponding to blood flow sounds occurring in the pressure reduction period. Then, data for a pulse wave envelope that associates the amplitude values of the detected pulse waves with the pressurizing pressures at the pulse wave generation times, and data for a blood flow sound envelope that associates the amplitude values of the blood flow sound signals with the pressurizing pressures at the blood flow sound generation times are generated, and the data for the pulse wave envelope and the data for the blood flow sound envelope are used to determine whether or not there is periodic variation in the blood pressure during the pressure reduction period.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: September 4, 2018
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Hiroyuki Kinoshita, Hironori Sato, Toshihiko Ogura
  • Patent number: 9918645
    Abstract: A method and an apparatus are provided for measuring a change in blood pressure caused by respiration control. A number of respirations per minute is measured based on a heart rate when a respiration exercise begins. Respiration of a subject is induced until the number of respirations per minute reaches a predetermined number of respirations per minute. A pulse transit time is calculated during the respiration exercise, a blood pressure value associated with the pulse transit time is calculated, and the blood pressure value is outputted.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 20, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sun-Tae Jung, Jae-Geol Cho
  • Patent number: 9901769
    Abstract: A plural parallel cuff for muscle training is made to reinforce muscles of limbs while it is wound broad around the portion of an upper arm and/or a thigh with uniform and stable binding force for the light exercise training. Three cloth sleeve bags are sewn to a connection cloth spaced in parallel. Three short rubber bags are inserted into three cloth sleeve bags respectively. The rubber bags are connected each other with T-joints for air channel. A plug and a socket are used to connect the pneumatic pump detachably to the thin tube. The plural parallel cuff is wound around a limb and hook-and-loop fasteners are used to form loops by uniting both ends of each of the cloth sleeve bags. The rubber bags are inflated by a pneumatic pump for restricting the bloodstream and then an low intensity exercise is performed.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: February 27, 2018
    Inventor: Hiroji Fukuta
  • Patent number: 9808172
    Abstract: A soft-tissue-injury diagnostic system for diagnosing soft tissue injury within a patient includes a set of hand-held inclinometers configured and arranged for measuring angles formed between a first inclinometer disposed in proximity to a patient joint and a second inclinometer disposed distal to the joint during controlled patient movements of the joint. A plurality of measuring electrodes are coupleable in proximity to the patient's spine along the body portion that moves along the joint. The measuring electrodes are configured and arranged for measuring action potentials along patient muscle groups during the controlled patient movements of the joint and transmitting the measured action potentials to a dynamic surface electromyograph (“sEMG”) module. A hub receives and processes data from the inclinometers and the dynamic sEMG module. A visual display is configured and arranged for receiving and displaying the processed data.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: November 7, 2017
    Assignee: Precision Biometrics, Inc.
    Inventor: David Marcarian
  • Patent number: 9770191
    Abstract: There is provided herein a method for producing a representative CO2 waveform, the method comprising obtaining two or more CO2 waveforms, for each of the two or more CO2 waveforms determining one or more scale factors and one or more shape factors, computing, based on the one or more shape and scale factors of each of the two or more CO2 waveforms, a representative set of shape factors and scale factors representing the two or more CO2 waveforms and constructing a representative waveform based on the representative set of shape and scale factors.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: September 26, 2017
    Assignee: ORIDION MEDICAL 1987 LTD.
    Inventors: Joshua Lewis Colman, Michal Ronen
  • Patent number: 9737217
    Abstract: Methods and apparatus are provided for assessing endothelial function in a mammal. In certain embodiments the methods involve using a cuff to apply pressure to an artery in a subject to determine a plurality of baseline values for a parameter related to endothelial function as a function of applied pressure (Pm); b) applying a stimulus to the subject; and applying external pressure Pm to the artery to determine a plurality of stimulus-effected values for the parameter related to endothelial function as a function of applied pressure (Pm); where the baseline values are determined from measurements made when said mammal is not substantially effected by said stimulus and differences in said baseline values and said stimulus-effected values provide a measure of endothelial function in said mammal.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: August 22, 2017
    Assignee: The Regents of the University of California
    Inventor: Jonathan S. Maltz
  • Patent number: 9649075
    Abstract: A system and method using an inflatable jacket over the compression paddle of a mammography and/or tomosynthesis system to enhance imaging and improve patient comfort in x-ray breast imaging.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: May 16, 2017
    Assignee: Hologic, Inc.
    Inventors: Kenneth DeFreitas, Ian Shaw, Timothy R. Stango
  • Patent number: 9642540
    Abstract: A blood pressure measurement device includes a measurement air bladder for being wrapped around a body part to be measured, a compression member that compresses the measurement air bladder from the outside of the measurement air bladder against the body part to be measured; an inflation member for inflating the measurement air bladder, a deflation member for deflating the measurement air bladder, a blood pressure determination unit that determines a blood pressure during the inflation by the inflation member or during the deflation by the deflation member, and a control unit that causes the compression member to apply a pressure that is higher than or equal to an atmospheric pressure to the measurement air bladder when an internal pressure of the measurement air bladder reaches or falls below a certain pressure due to the deflation by the deflation member.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: May 9, 2017
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Hiroyuki Kinoshita, Chisato Uesaka, Yukiya Sawanoi
  • Patent number: 9638404
    Abstract: The present invention relates to a portable flashlight, and more particularly to a portable flashlight which has a wireless switching function for turning on or off the flashlight by means of a radio signal in addition to a manual switch provided on the outside of the flashlight. The flashlight can not only be turned on or off by means of an external radio signal, but also be used in various ways such as turning on a part of the lamp or intermittently turning on the flashlight. A flashlight according to the present invention includes a power supply part, a lamp for generating a light by means of the power from the power supply part, and a manual switch connected between the lamp and the power supply part for switching the flashlight, characterized by further including a radio switch in addition to or instead of the manual switch, wherein the radio switch consists of a radio receiver for receiving an external radio signal to operate the radio switch.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: May 2, 2017
    Inventor: Sang Deuk Lee
  • Patent number: 9610059
    Abstract: The invention relates to a monitoring system (1) for monitoring acoustic heart signals, comprising a sensor housing (2) comprising a heart sound sensing element (3) adapted to be arranged in connection to a patient's heart to sense heart sounds and to generate a heart sound signal related to the heart sounds; a monitoring unit housing (4) comprising a processing unit (5) adapted to receive said heart sound signal, wherein said monitoring unit housing (4) is separated from said sensor housing (2) and is adapted to be arranged in relation to the patient's upper sternum, wherein the monitoring system (1) further comprises a flexible elongated connector (6) connecting said sensor housing (2) to said monitoring unit housing (4), said connector (6) having a longitudinal extension along a longitudinal axis (7), wherein said connector (6) is connected to said monitoring unit housing (4) in an angular relationship, and wherein the angle ? between said longitudinal axis (7) and a main axis (8) of said monitoring unit h
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 4, 2017
    Assignee: Acarix A/S
    Inventors: Claus Bo Voge Christensen, Weimin Rong
  • Patent number: 9591992
    Abstract: An exhalation collected in a breath bag capable of expanding and contracting is sucked into a gas inlet vessel 21 with a given volume (Va), and then the gas inlet vessel 21 is communicated by means of valve V2 with a cell 11 that is maintained at an atmospheric pressure by being pre-filled with a sample gas or reference gas. After the communication, the gas pressure is measured by a pressure sensor 16 attached to the cell 11. Whether the exhalation collected in the breath bag is below a given amount or not can be accurately judged.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: March 14, 2017
    Assignee: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Yasuhiro Kubo, Masaaki Mori
  • Patent number: 9375150
    Abstract: A method, system and computer program product are provided for evaluating whether an oscillometric signal representative of pressure oscillations in the vasculature of a patient is associated with special conditions that may lead to inadvertently identifying the signal as being indicative of peripheral arterial disease or non-analyzable. In one embodiment, the method includes obtaining an oscillometric signal at a location on an extremity of the patient, determining a ratio using a value associated with a first frequency component of the oscillometric signal and a value associated with a second frequency component of the oscillometric signal, comparing the ratio to a threshold value, associating a first diagnostic class with the oscillometric signal when a first outcome results from comparing the ratio to a threshold value, and associating a second diagnostic class with the oscillometric signal when a second outcome results from comparing the ratio to a threshold value.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: June 28, 2016
    Assignee: Summit Doppler Systems, Inc.
    Inventors: Kenneth E. Jarrell, David C. Jones
  • Patent number: 9363025
    Abstract: A signal propagation system for communicating timing information comprises a processing resource (300) arranged to generate a first timing signal for communicating the timing information, the first timing signal having a first frequency spectrum associated therewith. An electronic circuit (110) is provided having an input for receiving the timing information. An electrical connection (310) between the processing resource (300) and the electronic circuit (110) is also provided. A signal transformation module (304) for communicating the timing information, and the signal transformation module (304) is arranged to translate the first timing signal into a second timing signal for communicating the timing information. The second timing signal has a second frequency spectrum associated therewith that comprises fewer harmonics than the first timing signal, thereby reducing electromagnetic energy emitted by the electrical connection.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: June 7, 2016
    Assignee: TomTom International B.V.
    Inventor: Jan Johannes Maria van den Elzen
  • Patent number: 9332947
    Abstract: A system and method using an inflatable jacket over the compression paddle of a mammography and/or tomosynthesis system to enhance imaging and improve patient comfort in x-ray breast imaging.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: May 10, 2016
    Assignee: HOLOGIC, INC.
    Inventors: Kenneth DeFreitas, Ian Shaw, Timothy R. Stango
  • Patent number: 9326692
    Abstract: A blood pressure measurement device is characterized in that the said device is designated to arithmetically apply to the computed blood pressure value a correction value that is in accordance with the difference in atmospheric pressure between the position of the blood pressure transmitting part and the position of the heart of the subject wearing the blood pressure transmitting part as obtained from the sensor signal, on the basis of the internal pressure variation of the blood pressure transmitting part.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: May 3, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiko Yokoyama, Kuniaki Tanaka, Toshinobu Sakurai
  • Patent number: 9307916
    Abstract: In an electronic sphygmomanometer, the thickness of the second connection tube is set to be lower than the thickness of the first connection tube, and therefore, even if error has occurred in the structural dimensions of the pressure sensor air tube, the error can be absorbed as a result of the second connection tube extending/contracting. It is therefore possible to provide an electronic sphygmomanometer that includes, in a structure in which a pressure sensor used in the electronic sphygmomanometer is disposed, a peripheral structure for the pressure sensor that can improve the reliability of blood pressure measurement values.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 12, 2016
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Ryosuke Doi, Takanori Nishioka, Kohei Takeoka, Yukiya Sawanoi, Izumi Hachimaru, Masataka Yanagase, Kenichi Horibata
  • Patent number: 9211070
    Abstract: Systems, methods, and products for determining indicated blood pressure values and/or characterizing a condition of a patient. The systems, methods, and products are capable of determining indicated blood pressure values in a lower extremity of a patient using an oscillometric technique. An oscillometric signal obtained from the lower extremity of the patient is analyzed, and the patient may be classified into one of a plurality of diagnostic classes. Each diagnostic class may have an associated ratio value. Based on the diagnostic class into which the patient is classified, a selected lower extremity characteristic ratio may be selected. A lower extremity indicated blood pressure value may be obtained by oscillometric processing using the selected ratio. This lower extremity indicated blood pressure value may be used with an upper extremity indicated blood pressure value to perform an extremity blood pressure ratio (EBPR) examination.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: December 15, 2015
    Assignee: Cleveland Clinic Foundation
    Inventors: Heather L. Gornik, Kenneth E. Jarrell, David C. Jones, Xiaofeng Wang
  • Patent number: 9192325
    Abstract: An apparatus and method for determination of change in volume of a body part or body organ on a real-time basis. In a breastfeeding application, an inflatable cuff is positioned on a nursing breast and allows direct access to the nipple by the breastfeeding infant. The inflatable cuff includes an outer shell portion and an inner inflatable bladder. The pressure in the bladder is monitored regularly by a pressure sensor, during a breastfeeding session. When the pressure drops below a preselected pressure, a controller directs a pump to pump air into the inflatable bladder to maintain the preselected pressure. The volume of added air is monitored during the breastfeeding session. Various calibrations are used to correlate the amount of added air, to the volume of breast milk withdrawn from the breast. The volume of breast milk withdrawn during breastfeeding is calculated and displayed throughout the breastfeeding session.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: November 24, 2015
    Assignee: MILKOTECH SYSTEMS LTD
    Inventors: Eitan Mardiks, Gily Netzer, David Simeon Blondheim
  • Patent number: 9186172
    Abstract: An epidural space locating device is described, comprising a handle with a proximal end and a distal end; a hollow distal chamber attached to the handle distal end and being provided with a distal connector where a spinal needle is received to be introduced in the patient's body, such that there is a fluid connection between the spinal needle and the distal chamber; the device also comprises a plunger running within the distal chamber from a starting position to a final position when there is a pressure loss within the distal chamber due to the spinal needle has reached the epidural space; the plunger is secured before using the device, which emits a warning signal at the time the epidural space has been reached.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: November 17, 2015
    Inventor: Héctor de Jesús Velez Rivera
  • Patent number: 9149194
    Abstract: In a sphygmomanometer for measuring blood pressure according to a volume compensation method, an upper arm V0 equivalent cuff pressure representing a cuff pressure in a state where an inner pressure and an outer pressure of an artery of an upper arm are in equilibrium is specified based on a cuff pressure signal of the upper arm. For example, the upper arm V0 equivalent cuff pressure is detected as an average blood pressure obtained from the cuff pressure signal of the upper arm. After a control target value and an initial cuff pressure in the volume compensation are detected, a difference between the initial cuff pressure and the upper arm V0 equivalent cuff pressure is calculated as a correction value, and the blood pressure value in the volume compensation method is corrected with the calculated correction value.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: October 6, 2015
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Yukiya Sawanoi, Yoshihide Tokko
  • Patent number: 9072436
    Abstract: A measurement device includes an air bag on a peripheral side, an air bag on a central side, and an air bag positioned therebetween. During blood pressure measurement, the air bags integrally behave, and the blood pressure is measured from the change in inner pressure thereof. During pulse wave measurement, the inner pressure of the air bag on the peripheral side is maintained to higher than or equal to the systolic blood pressure, and the measurement site is avascularized. The inner pressure of the air bag on the central side is maintained to the pressure near the blood pressure value, and the pulse wave is measured from the change in inner pressure thereof. The inner pressure of the air bag positioned therebetween is opened to atmospheric pressure, and the vibration of the air bag on the central side is prevented from propagating to the air bag on the peripheral side.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: July 7, 2015
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Tatsuya Kobayashi, Hideaki Yoshida
  • Publication number: 20150105675
    Abstract: A sphygmomanometer includes an operation part, a pulse wave sensor that detects a pulse wave signal indicative of a pulse wave in a part of the patient body that is operating the operation part. A first manometer measures a blood pressure based on the pulse wave signal, and a second manometer measures the blood pressure with a cuff that is worn by the patient. A cuff wearing detector detects a wearing of the cuff by the patient. A controller measures the blood pressure with the first manometer when the operation part is operated long enough for a detection of the pulse wave signal and measures the blood pressure with the second manometer when the cuff wearing detector detects that the cuff is worn and that the operation part is being operated.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Inventors: Tsuyoshi NAKAGAWA, Taiji KAWACHI, Kouki FUTATSUYAMA, Hiroshi YAMAKITA
  • Publication number: 20150065895
    Abstract: A blood pressure measurement device measures blood pressure and a blood pressure change affecting factor of a patient. The device includes a memory, a tolerance determination section, and a display unit. The tolerance determination section includes a rest/unrest condition determination section and a blood pressure tolerance determination section. The tolerance determination section determines whether the blood pressure of the patient is tolerant to the blood pressure change affecting factor. The display unit of the device displays the measured blood pressure, the measured blood pressure change affecting factor, and a tolerance determination of the patient.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 5, 2015
    Applicant: OMRON HEALTHCARE CO., LTD.
    Inventors: Yukiya Sawanoi, Mika Ezoe, Ayako Sakano
  • Publication number: 20140364748
    Abstract: Disclosed herein is a system for monitoring a patient that includes a cuff configured to inflate to at least partially occlude an artery of the patient and a cuff controller configured to inflate the cuff during a dynamic phase and generally maintain inflation of the cuff at about a target pressure during a static phase. The system also includes a sensor configured to receive a signal associated with the at least partially occluded artery and generate an output signal based on the received signal, and a cuff control module configured to determine the target pressure during the dynamic phase and based on the output signal, and control the cuff controller during the dynamic phase and the static phase.
    Type: Application
    Filed: August 22, 2014
    Publication date: December 11, 2014
    Inventors: John A. Lane, David E. Quinn, Matthew J. Kinsley, Tyson B. Whitaker
  • Patent number: 8900157
    Abstract: A blood pressure measurement control method for controlling the measurement of a blood pressure according to an oscillometric method has the steps of determining whether to employ a depressurization measurement method or a pressurization measurement method to measure the blood pressure according to a person to be measured, performing a measurement process of the blood pressure in a depressurization process when determined to measure the blood pressure with the depressurization measurement method, performing a measurement process of the blood pressure in a pressurization process when determined to measure the blood pressure with the pressurization measurement method, and outputting the measured blood pressure value.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: December 2, 2014
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Shingo Yamashita, Yoko Shimose
  • Patent number: 8880155
    Abstract: Embodiments of the present disclosure relate to a system and method for determining a risk, onset, or presence of hypovolemia based on one or more features of a plethysmographic waveform during a patient breathing cycle. For example, a hypovolemic patient may exhibit characteristic changes in pulse amplitude or stroke volume during inhalation and exhalation relative to a healthy patient. Further, a trend or pattern of such features may be used to assess the patient's fluid condition.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: November 4, 2014
    Assignee: Covidien LP
    Inventors: Michael Mestek, Daniel Lisogurski
  • Publication number: 20140288446
    Abstract: An apparatus for monitoring a physiological condition includes a signal-acquiring unit, an inflating-deflating unit, and a central processing system electrically coupled to the signal-acquiring unit and the inflating-deflating unit. The signal-acquiring unit is used for acquiring a first standard pulse signal and a first reactive hyperemia pulse signal at a specific part of a living being. The inflating-deflating unit is used for selectively inflating and deflating the specific part. The central processing system is capable of transforming the first standard pulse signal to a second standard pulse signal and transforming the first reactive hyperemia pulse signal to a second reactive hyperemia pulse signal using a nonstationary and nonlinear transfer function, respectively, to determine an endothelial function coefficient according to the second standard pulse signal and the second reactive hyperemia pulse signal, thus to analyze a physiological condition of the living being.
    Type: Application
    Filed: March 19, 2014
    Publication date: September 25, 2014
    Applicant: AVITA CORPORATION
    Inventor: Chun-Ho Lee
  • Patent number: 8821403
    Abstract: An apparatus for assessing cardiovascular status of a mammal comprises a system for locally applying a pressure to an artery capable of restricting blood flow through said artery, a wideband external pulse transducer having an output and situated to measure suprasystolic signals proximate to said artery, and a computing device receiving said output for calculating vascular compliance values. The method described is particularly useful for determining cardiac output, assessing whether a pregnant female has preeclampsia or a patient has cardiac insufficiency, or assessing cardiac arrhythmias.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: September 2, 2014
    Inventor: Nigel E. Sharrock
  • Patent number: 8814800
    Abstract: A system and method of enhancing a blood pressure signal is disclosed. The volume of an artery in a finger is measured by a photo-plesthysmographic (PPG) system, which produces a PPG signal. This PPG system is placed inside a cuff, and the cuff pressure is controlled by the PPG signal. The portion or component of the PPG signal having a frequency higher than a predefined threshold frequency is then modified or enhanced, such as by multiplying the high frequency component by a calibration factor. A blood pressure signal is then calculated using the cuff pressure and the modified PPG signal. A blood pressure contour curve may then be generated, and a variety of parameters may be calculated using the curve.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 26, 2014
    Assignee: CNSystems Medizintechnik AG
    Inventors: Jürgen Fortin, Rupert Grüllenberger
  • Publication number: 20140228694
    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: Application
    Filed: April 16, 2014
    Publication date: August 14, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Youn-ho KIM, Kun-soo SHIN, Sang-kon BAE, Seok-chan KIM
  • 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: 8784325
    Abstract: Provided are an apparatus and method for measuring blood pressure.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn-ho Kim, Kun-soo Shin
  • 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
  • Patent number: 8764669
    Abstract: A blood pressure information display device for calculating a blood pressure value based on a pulse wave amplitude through the oscillometric method and the like, and displaying the calculated blood pressure value as blood pressure information performs a process of changing a magnitude of a specified pulse wave amplitude of a plurality of extracted pulse wave amplitudes according to the operation by a user (medical staff) when a predetermined instruction is input. A predetermined algorithm is applied to the plurality of pulse wave amplitudes reflecting the change to calculate a reference blood pressure value, and the calculated reference blood pressure value is displayed as the blood pressure information.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 1, 2014
    Assignee: Omron Healthcare Co., Ltd.
    Inventor: Tomonori Inoue
  • 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.
  • Publication number: 20140163402
    Abstract: A patient monitoring system includes an inflatable cuff, a gas reservoir containing a compressed gas, and a sensor. When the inflatable cuff is coupled to a wearer, the gas reservoir supplies gas to the inflatable cuff to inflate the inflatable cuff via gas pathways. As the inflatable cuff inflates, a patient monitor can receive blood pressure data from the sensor and use the blood pressure data to determine the blood pressure of the wearer. The patient monitor can also receive blood pressure data during deflation of the inflatable cuff to determine the blood pressure of the wearer.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 12, 2014
    Inventors: Marcelo M. Lamego, Massi Joe E. Kiani, Jeroen Poeze, Cristiano Dalvi, Hung Vo
  • Patent number: 8747327
    Abstract: A blood pressure measuring apparatus includes a sensing unit including a plurality of sensors sensing sphygmus waves at a measurement site, a selection unit selecting one sensor of the plurality of sensors based on the sphygmus waves sensed by the plurality of sensors, and a blood pressure estimation unit estimating blood pressure of the measurement site based on a sphygmus wave sensed by the selected sensor.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: June 10, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Pal Kim, Kun-soo Shin, Sang-kon Bae, Kyoung-ho Kang, Youn-ho Kim, Seok Chan Kim
  • 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: 8740802
    Abstract: The present invention provides a technique for continuous measurement of blood pressure based on pulse transit time and which does not require any external calibration. This technique, referred to herein as the ‘Composite Method’, is carried out with a body-worn monitor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor. A network of body-worn sensors, typically placed on the patient's right arm and chest, connect to the body-worn monitor and measure time-dependent ECG, PPG, accelerometer, and pressure waveforms. The disposable sensors can include a cuff that features an inflatable bladder coupled to a pressure sensor, three or more electrical sensors (e.g. electrodes), three or more accelerometers, a temperature sensor, and an optical sensor (e.g., a light source and photodiode) attached to the patient's thumb.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: June 3, 2014
    Assignee: Sotera Wireless, Inc.
    Inventors: Matt Banet, Marshal Dhillon, Devin McCombie
  • 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
  • Publication number: 20140142445
    Abstract: A method and apparatus for measuring a patient's blood pressure featuring the following steps: 1) measuring a time-dependent optical waveform with an optical sensor; 2) measuring a time-dependent electrical signal with an electrical sensor; 3) estimating the patient's arterial properties using the optical waveform; 4) determining a pulse transit time (PTT) from the time-dependent electrical signal and the time-dependent optical waveform; and 5) calculating a blood pressure value using a mathematical model that includes the PTT and the patient's arterial properties.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 22, 2014
    Applicant: SOTERA WIRELESS, INC.
    Inventors: Matthew J. Banet, Marshal Singh Dhillon, Andrew Stanley Terry, Zhou Zhou, Henk Visser, II, Robert J. Kopotic