Pressure Indicator Includes Liquid Column Patents (Class 600/497)
  • Patent number: 8784326
    Abstract: It is an object to provide a method of manufacturing a core of a cuff for blood pressure meter and a cuff for blood pressure meter in order to improve operability during the insertion and removal of an arm and fittability during the tightening of the arm as well as to enable the reduction of manufacturing costs. A cuff for blood pressure meter (1) has an air bag (12), and a core (2) disposed outside the air bag (12). The core (2) includes a flexible sheet-like first core (21) and a second core (22) which is formed into a curved shape and which is attached to and stacked on the first core (21) and which curves the first core (21).
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 22, 2014
    Assignee: Citizen Holdings Co., Ltd.
    Inventor: Takuro Kohyama
  • Patent number: 8771196
    Abstract: It is an object to provide a cuff for blood pressure meter wherein a tightening mechanism and a holding mechanism have structures with good mechanical strength to enable the improvement of durability and a size reduction, fittability to an arm is improved to achieve higher accuracy of a blood pressure measurement, and operability can be improved. A cuff for blood pressure meter (1) comprises a tightening mechanism (2) for tightening a flexible cuff (11), and a holding mechanism (3) for holding the tightening position of the tightened flexible cuff (11). The tightening mechanism (2) includes a rack (42) formed in a tightening belt (4), and a pinion gear (22). When the pinion gear (22) is rotated, the rack (42) is moved in a tightening direction. The holding mechanism (3) includes holding holes (43) formed at a plurality of positions in the longitudinal direction of the tightening belt (4), and holding pins (31) which engage into the holding holes (43).
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 8, 2014
    Assignee: Citizen Holdings Co., Ltd.
    Inventor: Takuro Kohyama
  • 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: 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
  • Patent number: 7909849
    Abstract: Apparatus is provided for protecting a patient's limb from tourniquet-related injury, comprising: a tourniquet cuff having a length sufficient for encircling a limb protection sleeve applied to a limb at a location having a limb circumference of not less than a predetermined minimum limb circumference and not more than a predetermined maximum limb circumference; limb protection sleeve adapted for applying to the limb at the location, wherein the sleeve has a tubular shape and a tubular circumference predetermined to be less than the predetermined minimum and wherein the sleeve is formed to allow elastic stretching of the tubular shape sufficient to increase the tubular circumference to be substantially equivalent to the limb circumference at the location when the sleeve is applied to the limb, thereby applying a pressure to the limb that is greater than a predetermined minimum pressure and less than a predetermined maximum pressure; and identification means perceptible to a user for providing an indication to
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 22, 2011
    Inventor: James A. McEwen
  • Patent number: 7717856
    Abstract: A sphygmomanometer having an elongated tube, an air chamber coupled to a first end of the tube, and a liquid chamber coupled to a second end of the tube. The liquid chamber is partially filled with fluid and is couplable to a source of external pressure. An offset region located proximate the second end of the tube has a significantly reduced cross-sectional area so as to reduce the effect of fluid level changes on pressure measurement accuracy. At least one ventilation valve is coupled to the elongated tube and the air chamber and is operative to vent the elongated tube and the air chamber to atmosphere.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: May 18, 2010
    Assignee: QDevice Medical Inc.
    Inventors: Yunquan Chen, Jian Liu
  • Patent number: 6752764
    Abstract: A sphygmomanometer with an air reservoir connected above a tube for a mercury column and a selectively openable and closeable valve to the air reservoir. With the valve open, first blood pressure measurements can be made by pressure rising in the mercury reservoir. With the valve closed, the air above the mercury column resists rise in the mercury column but also permits higher pressure measurements using the same mercury column. One scale at the mercury tube measures the pressure with the valve open and another scale at the tube measures the pressure with the valve closed. The measurements with the valve closed are calibrated by appropriately altering the volume of the air reservoir depending upon altitude at barometric pressure. The sphygmomanometer can be used to perform a mercury drop test for determining the altitude at which the sphygmomanometer is located.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: June 22, 2004
    Inventor: Man S. Oh
  • Publication number: 20030176850
    Abstract: A method and a sensing device for feature measurements, for example pressure and/or flow rate and temperature measurements, in a fluid. The sensing device com-prises at least two sensing elements (31,35; 31′,35′; 31″,43; 31′″,35′″,52; 61,62; 86,88; 116,118,120,122) all mounted and/or fabricated on a chip (20; 30; 40; 81; 112,114) and connected to a chip circuit, and a power supply and measuring circuit (38) placed outside the chip (20; 30; 40; 81; 112,114) and connected to the chip circuit. According to the invention the power supply and measuring circuit is controllable to feed at least two different kinds of signalling to the chip circuit.
    Type: Application
    Filed: May 13, 2003
    Publication date: September 18, 2003
    Inventor: Patrik Melvas
  • Patent number: 6413224
    Abstract: An apparatus for measuring a blood pressure of a living subject, including a blood pressure measuring device which measures a blood pressure value of the subject, a first memory which stores a plurality of blood pressure values measured by the blood pressure measuring device, in an order of measurement of the blood pressure values, a pulse wave detecting device which detects a pulse wave produced from an arterial vessel of the subject in synchronism with heartbeat of the subject while each of the blood pressure values is measured by the blood pressure measuring device, a second memory which stores a waveform of the pulse wave detected by the pulse wave detecting device, in the order, the second memory storing the respective waveforms of the pulse waves each of which is detected by the pulse wave detecting device while a corresponding one of the blood pressure values is measured by the blood pressure measuring device, and an output device which outputs the blood pressure values stored in the first memory, in t
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: July 2, 2002
    Assignee: Colin Corporation
    Inventors: Toshihiko Ogura, Toru Oka
  • Patent number: 6332869
    Abstract: An apparatus for measuring a superior-and-inferior-limb blood-pressure (“BP”) index of a living subject, including an inferior-limb BP measuring device which includes a first inflatable cuff adapted to be wound around an inferior limb of the subject and which measures an inferior-limb BP value of the subject based on a first pulse wave obtained while a first pressure of the first cuff is changed, a superior-limb BP measuring device which includes a second inflatable cuff adapted to be wound around a superior limb of the subject and which measures a superior-limb BP value of the subject based on a second pulse wave obtained while a second pressure of the second cuff is changed, a cuff-pressure changing device which changes the first and second pressures of the first and second cuffs, such that a time when the first pressure being changed becomes equal to an estimated inferior-limb BP value coincides with a time when the second pressure being changed becomes equal to an estimated superior-limb BP va
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: December 25, 2001
    Assignee: Colin Corporation
    Inventors: Toshihiko Ogura, Tomohiro Nunome