公开(公告)号：EP0246920A3

公开(公告)日：1988-08-03

申请号：EP87304590

申请日：1987-05-22

Applicant: BAXTER TRAVENOL LABORATORIES, INC.

Inventor： Kono, Mark A. ,  Ripley, John A.

IPC: A61B05/02

CPC classification number: A61B5/028

Abstract: A method of determining right heart ejection fraction comprising injecting a cold indicator into the right ventricle or locations in the heart upstream thereof during an injection period and allowing the indicator to be diluted with blood and flow to the pulmonary artery whereby the temperature of the fluid in the pulmonary artery falls and then rises, measuring the temperature of the fluid in the pulmonary artery at least during the time that the temperature in the pulmonary artery is rising, measuring a prebolus temperature of the blood in the pulmonary artery prior to the time that the cold indicator reaches the pulmonary artery, establishing a post bolus baseline temperature which is lower than said prebolus baseline temperature, comparing at least some of the measured temperatures during the time that the temperatures of the fluid in the pulmonary artery are rising to the post bolus baseline temperature to establish temperature differentials, and using at least some of the temperature differentials to determine ejection fraction.

公开(公告)号：EP0213620A3

公开(公告)日：1988-06-01

申请号：EP86111990

申请日：1986-08-29

Applicant: TERUMO KABUSHIKI KAISHA trading as TERUMO CORPORATION

Inventor： Moriuchi, Yousuke ,  Kohsai, Tadashi

IPC: G01L19/00 ,  A61B05/02

CPC classification number: A61B5/0215 ,  G01L19/0015

Abstract: A fluid pressure transducer apparatus consists of a fluid pressure transducer (40) and a fluid pres­sure-transmitting path (32). The fluid pressure transducer for converting a fluid pressure into an electrical signal, comprises a chamber, formed on the detection surface (43a), for storing a fluid. The path includes a cylindrical mem­ber (20) having a first port (25) communicating with the chamber and a plurality of secondary ports (22, 23, 24) arranged on a surface perpendicular to an axis of the cylindrical member (20), and a stop cock (30) ar­ranged in the cylindrical member (20) which is slidable against the inner surface of the cylindrical member (20). The stop cock (30) has a path (32) defined therein and a handle (34) for slidably rotating the stop cock (30) in the cylindrical member (20) through a predetermined angle so that the path connects the first port (25) with only one of the plurality of secondary ports (22, 23, 24) and no other second ports communicate with each other.

公开(公告)号：EP0180954A3

公开(公告)日：1988-03-30

申请号：EP85114027

申请日：1985-11-05

Applicant: Hewlett-Packard Company

Inventor： Merrick, Edwin B. ,  Stephens, Thomas P.

IPC: G01L09/04 ,  G01L19/04 ,  A61B05/02

CPC classification number: A61B5/0215 ,  G01L9/025

Abstract: The temperature coefficient of the combination of a transducer (T) and any one of a plurality of disposable plastic domes (D) manufactured to given specifications is reduced substantially to zero by making the temperature coefficient of the transducer (T) when the pressure dome (D) is not mounted therto equal in magnitude and opposite in sign to the change in temperature coefficient that results from mounting the average dome (D) to the transducer (T). The temperature coefficient of the transducer (T) is permanently adjusted by laser trimming a temperature-dependent resister (R x , R T ) of a bridge circuit (R A . R B , R C , R V , R T , R x . Ry) coupled to be imbalanced by variations in a pressure sensitive impedance (Z) of the transducer (T).

公开(公告)号：EP0247880A3

公开(公告)日：1988-02-10

申请号：EP87304744

申请日：1987-05-28

Applicant: BAXTER TRAVENOL LABORATORIES, INC.

Inventor： Link, William Trevor

IPC: A61B05/02

CPC classification number: A61B5/6843 ,  A61B5/021 ,  A61B2562/02

Abstract: An assembly for use in oscillometric blood pressure monitoring, comprising:
(a) a tube (36) having a free end (34) and a flexible, stretchable bladder (24) which is mounted to and across the free end (34) of the tube (36) and which is pressurizable up to a pressure of at least about 200 Torr so as to expand out in front of the free end (34) of the tube (36) and means (42) for limiting the lateral expansion of the bladder (24) relative to the tube (36) in a way which will allow it to produce pressure pulses when the bladder (24) is placed externally directly against the person adjacent the artery (14) such that the bladder (24) and not the tube (36) engages the person and is thereafter pressurized in the controlled way. (b) means (28) for pressurizing the bladder (24) through the tube (36) in the controlled way; and (c) means (26) for holding the bladder (24) externally against the temporal artery (14) as the bladder (24) is pressurized in the controlled way.

公开(公告)号：EP0212967A3

公开(公告)日：1987-10-14

申请号：EP86306380

申请日：1986-08-18

Applicant: TRIPOD INDUSTRIES COMPANY LIMITED

Inventor： Close, Alan ,  Hamilton, Guy ,  Wright, Martin

IPC: A61B05/02

CPC classification number: A61B5/022 ,  A61B2562/0247

Abstract: The invention relates to apparatus for measuring blood pressure by providing an inflatable cuff and pulse sensing means for fixing to a digit such as, for example, a finger or toe, and electrical control circuit means for converting a sense pulsed into a visual or audible indication, pneumatic means for transmitting the sensed pulse to the converting means and pressure means for measuring the pressure exerted in the cuff, the arrangement being such that with the cuff in a operative position on the body, progressive inflation/deflation of the cuff is effected until pulse sensing means just detect the presence of the pulse thus providing an indication of the systolic blood pressure. The invention includes novel variable capacitors for pneumatic coupling to the pulse sensor and comprising a housing, a diaphragm disposed across the housing, a base plate disposed on the side of the diaphragm opposite from said pneumatic connection, and electrical connecting means provided to the base plate so that changes in the volume occur the cavity defined by the base plate and the diaphragm due to pressure changes in the pneumatic system above the diaphragm, resulting in changes in capacitance and sensing of the pulse within the pneumatic system to be determined.

公开(公告)号：EP0227119A3

公开(公告)日：1987-10-07

申请号：EP86118096

申请日：1986-12-29

Applicant: NIPPON COLIN CO., LTD.

Inventor： Niwa, Minoru ,  Yokoe, Hifumi

IPC: A61B05/02 ,  A61B05/00

CPC classification number: A61B5/02255 ,  A61B5/02241 ,  A61B5/14552

Abstract: An automatic blood pressure monitoring system for automatically obtaining blood pressure measurements, which includes (a) determining device for determining a measure of blood pressure of a living body; (b) detecting device for detecting a degree of saturation of oxygen in blood which flows in a peripheral part of the living body, the device generating signal representative of abnormality if the degree is found abnormal; and (c) control device being responsive to the signal supplied from the detecting device, to start the determining device to determine the measure of blood pressure. There is also disclosed an automatic blood pressure monitoring system which includes (i) determining device for determining a measure of blood pressure; (ii) detecting device for detecting a degree of saturation of oxygen in blood, the detecting device generating signal indicative of abnormality if the degree is found abnormal; and (iii) trigger device for generating first signal at intervals for periodically starting the determining device so as to determine the measure, the trigger device being responsive to the signal supplied from the detecting device, to generate second signal at intervals shorter than the intervals at which to generate the first signal, so as to periodically start the determining means for determining the measure.

公开(公告)号：EP0159041A3

公开(公告)日：1987-09-09

申请号：EP85104730

申请日：1985-04-18

Applicant: Speidel, Blasius

Inventor： Speidel, Blasius

IPC: A61B05/02

CPC classification number: A61B5/0235 ,  F16K7/063

公开(公告)号：EP0135134A3

公开(公告)日：1987-06-03

申请号：EP84109622

申请日：1984-08-13

Applicant: VITACOMM LTD

Inventor： Uphold, James D. ,  Pfohl, Robert L.

IPC: A61B05/02 ,  A61B07/04

CPC classification number: A61B7/023 ,  A61B5/0017 ,  A61B5/024 ,  A61B5/0816 ,  A61B5/1106 ,  A61B5/6852 ,  A61B5/687 ,  A61B2090/0814 ,  A61B2560/0285 ,  A61B2560/0443

Abstract: A patient vital signs monitoring system includes an elongated flexible esophageal stethoscope catheter including a microphone and a thermister measuring means detachably connected to a processing monitor through a patient interface unit for electrical isolation of the patient from the processing system to assure patient safety from electrical currents. A single microphone, including an amplifier, picks up and transmits sound from the stethoscope catheter through a processing system including an audio filter system in the patient interface unit which filters out unwanted sounds and selectively amplifies either one or both of the heartbeat and breathing sounds and transmits signals indicative of these sounds to the monitor/transmit- ting unit through a fiberoptic link to the microprocessor where the signals are converted into counts per units of time (rates), which are, in turn, compared against reference upper and lower limits for generating alarm signals in response to critical deviations from preset norm. The monitor/transmitter unit is programmed to be self-monitoring by running initial tests of the system prior to going into the normal patient monitoring mode and by a continuous monitoring submode while in the monitoring mode. An IR transmitter in the monitor/transmitter unit transmits the vital breath and heart sounds by way of an infrared receiver carried by the operator and monitored by an earphone to eliminate interference from electrical systems and avoiding additional hardline electrical connections within the operating room. A self-destruct circuit within the patient interface unit destroys the microphone circuit within the esophageal stethoscope catheter during disconnect of the catheter in order to prevent reuse of the esophageal catheter.

公开(公告)号：EP0138664A3

公开(公告)日：1987-05-20

申请号：EP84401823

申请日：1984-09-14

Applicant: IFACAP (INSTITUT DE FORMATION POUR L'AMELIORATION DES CONDITIONS d'ACTIVITES PROFESSIONNELLES)

Inventor： Kielczewska, Elzbieta ,  Delhaye, Jean-Noel

IPC: G01N01/24 ,  A61B05/02

CPC classification number: A61B5/024 ,  G01N1/2273 ,  G01N1/24 ,  G01N2001/2276

Abstract: L'invention est relative à un procédé de prélèvement d'air ambiant et à un dispositif mettant en oeuvre ce procédé.
Selon l'invention, le procédé, dans lequel on aspire en con tinu, à l'aide d'une pompe l'air ambiant à proximité des voies respiratoires d'un individu occupant un poste de travail, et dans lequel on filtre l'air prélevé en vue d'analyser les particules pré sentes dans l'air ambiant, est caractérisé en ce que l'on capte le rythme cardiaque de l'individu et que l'on pilote le débit de la pompe avec un signal modulé par le rythme cardiaque.
L'invention trouvera son application dans le domaine de la lutte contre la pollution atmosphérique.

公开(公告)号：EP0182363A3

公开(公告)日：1987-02-04

申请号：EP85114716

申请日：1985-11-19

Applicant: TERUMO KABUSHIKI KAISHA trading as TERUMO CORPORATION

Inventor： Sekii, Shigekauzu ,  Tanabe, Susumu

IPC: A61B05/02 ,  G06G07/60

CPC classification number: A61B5/028 ,  A61B5/029

Abstract: An apparatus for measuring cardiac output includes a first system for obtaining cardiac output based on a thermal attenuation method and a second system for obtaining blood flow velocity based on a thermal-type flowrate measurement. A constituent value is obtained from the cardiac output and blood flow velocity, and the constituent value is held. The apparatus also includes a computing unit for computing cardiac output from the already obtained constituent value and a blood flow velocity obtained at the time of measurement. The constituent value can be updated by starting the first system.