A storage case with a biomedical electrode pad for storing a biological signal processing circuit unit for processing an biological electrical signal which has been detected by the biomedical electrode pad, wherein a case body thereof has a storage area for the biological signal processing circuit unit, the storage area being provided in an openable and closable manner, and the biological signal processing circuit unit is detachable with respect to the storage area.
A bioelectrode pad-equipped storage case for storing a biological signal processing circuit unit for processing an electrical biological signal which has been detected by a bioelectrode pad, wherein the case body thereof, which has a storage region for the biological signal processing circuit unit, is configured in a manner such that it is possible to open and close said storage region and to install said biological signal processing circuit unit in said storage region and remove the same therefrom.
A fluid concentration measuring device measures the concentration of a fluid flowing through a duct having a light-transmissive, deformable duct wall. The device includes a light source; a light receiving element which receives the light, which passed through the wall of the duct and the fluid inside the duct, and outputs a signal indicating the intensity of the light; light path distance setting means and fluid concentration output means which obtains a plurality of relational expressions, which indicate the relation between the light intensity and the fluid concentration when the light from the light supply part is received by the light receiving part over each of the light path distances, and obtains the fluid concentration from the light intensity at the light receiving part based on the relational expressions for the plurality of light path distances and outputs the fluid concentration.
[Problem] To make it possible to measure the flow speed of a fluid with high precision by completely or almost completely eliminating the effects of noise received by a wiring cable with a hot wire connected to the tip thereof, even if the probe as a whole is made extremely thin. [Solution] A hot-wire flow meter in which one of two resistances at the same pole of a resistance bridge contains a wiring cable with a hot wire connected to the tip thereof, said hot wire is placed in a fluid so as to intersect the direction of the flow thereof, the hot wire is energized and thereby made to generate heat, and by measuring a change in resistance due to cooling of the hot wire proportional to the flow speed of the fluid, said flow speed is measured. Said hot-wire flow meter is characterized in that the other of the abovementioned two resistances at the same pole of the resistance bridge contains a wiring cable, the tip of which forms a closed path, that extends, alongside the wiring cable with the hot wire connected to the tip thereof, almost to said hot wire.
G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
A61B 5/028 - Measuring blood flow using tracers, e.g. dye dilution by thermo-dilution
G01F 1/69 - Structural arrangementsMounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
[Problem] To make it possible to eliminate measurement errors resulting from light receiving element sensitivity variation and optical axis deviation and to highly accurately measure the concentration of a fluid flowing inside a conduit having a light-transmissive conduit wall. [Solution] A device for measuring the concentration of a fluid flowing inside a conduit having a light-transmissive conduit wall, said device being provided with: a light source for providing light from at least one light provision location on the surface of the conduit to the inside of the conduit; a line sensor for receiving light that has been supplied from the light provision location to the inside of the conduit and has passed through the inner wall of the conduit and the fluid in the conduit using a plurality of light receiving elements that have the same sensitivity and are disposed on the side of the conduit diametrically opposite from the light provision location in a straight line in the extension direction of the conduit so as to have a uniform and small interval therebetween and outputting a signal indicating the intensities of the light received by each of the plurality of light receiving elements; and a fluid concentration output means for using the Beer-Lambert law to calculate the concentration of the fluid from the intensities of the light received by each of the plurality of light receiving elements of the line sensor and the interval therebetween and outputting the calculated concentration.
Provided is a small slender device capable of measuring the internal pressure of fluid flowing through a lumen of a living body. The measurement device (10) is equipped with: a guide wire (11), the tip of which can be inserted into a lumen; a hot wire flow meter (23) provided on the tip of the guide wire (11); a cantilever (32) provided towards the tip of the guide wire (11); a piezoelectric element (37) for measuring the displacement of the cantilever (32); and a contact sensor (31) provided on the tip of the cantilever (32). The internal pressure in the lumen can be calculated on the basis of the flow velocity obtained by the hot wire flow meter (23). The internal diameter of the lumen can be measured on the basis of the displacement of the cantilever (32).
A61B 5/0215 - Measuring pressure in heart or blood vessels by means inserted into the body
A61B 5/0205 - Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
G01B 21/14 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters internal diameters
An electrode pad for use on a living organism can measure an electrocardiographic signal without being hindered by body-motion noise. The electrode pad is attached to the skin of the living organism, detects an electrical signal, and supplies the electrical signal to an electrocardiograph. The electrode pad for use on a living organism is characterized by the provision of a mesh-like electrode that extends along the skin, a conductive gel sheet that is layered on top of the electrode and extends along the surface of the skin, and a soft protective sheet that covers the layered electrode and conductive gel sheet.
[Problem] To avoid measuring light which has passed over an optical path diagonally traversing a tube in the direction of extension thereof, to thereby measure with high accuracy the concentration of a fluid, such as blood or a drug solution, flowing within a resin tube or other tube having a tube wall that is light transmissive and deformable. [Solution] A device for measuring the concentration of a fluid flowing within a tube having a tube wall that is light transmissive and deformable, provided with: a light source for supplying light to the tube interior from a light supply position on the surface of the tube; a photoreceptor element situated at a light reception position located to the opposite side from the light supply position in the a diametrical direction of the tube, for receiving the supplied light having passed through the tube wall of the tube and the fluid inside the tube, and outputting a signal indicating the intensity of the light; an optical path distance setting means for setting a plurality of optical path distances between the light supply position and the light reception position; and fluid concentration output means that, on the basis of the Lambert-Beer law, calculates from the intensity of the light at the light reception position at each of the plurality of optical path distances, a plurality of relational expressions indicating a relationship between fluid concentration and light intensity when light from the light supply position is received at the light reception position at each optical path distance, and that on the basis of the relational expressions for the plurality of optical path distances, outputs the fluid concentration calculated from the light intensity at the light reception position.
An electrocardiograph measures an electrocardiac signal by processing electric signals detected by bioelectrode pads. The bioelectrode pads each includes a plurality of sheets of electrodes disposed by being stacked on each other; conductive gel sheets disposed alternately with the sheets of electrodes and interposed between the electrodes; and a dynamic pressure stabilizing plate. The electrocardiograph includes a first differential circuit for obtaining an electrocardiac source signal by taking the difference between signals each obtained from any one of the electrodes of each of two bioelectrode pads; a second differential circuit for obtaining a body motion noise signal by taking the difference between signals obtained from any two of the electrodes of each of said two bioelectrode pads; and a body motion noise removing circuit for removing the low frequency components of the body motion noise signal of each of said two bioelectrode pads from the electrocardiac source signal.
[Problem] To provide a low-cost breathing detection device with high sensitivity which is comfortable to wear. [Solution] A breathing detection device which comprises a device main body (1) that is mounted on the abdomen of a subject via an adhesive sheet and an airbag (2) that is inserted between the device main body (1) and the abdomen (A), wherein the device main body (1) includes a measurement unit (5) that detects and outputs the subject's breathing on the basis of the change in air pressure in the airbag (2) and a battery (6) that supplies power to the measurement unit (5).
[Problem] To highly precisely measure the concentration of a fluid such as a chemical or blood flowing within a duct even if light emission strength, the wall thickness of the duct, or the like is unclear or varies. [Solution] The present invention is characterized in that: when measuring the concentration of a fluid flowing within a duct having a light-transmissive tube wall, light is supplied from a light source into the duct at a plurality of light supply locations on the surface of the duct arranged adjacent to each other along the direction of extension of the duct; at each of a plurality of light reception locations on the surface of the duct positioned at the reverse side in the diametral direction of the duct from the light supply locations, the arriving light is received that has been supplied and has traversed the interior of the fluid flowing within the duct and the interior of the wall of the duct, and the strength of the light is determined; on the basis of the Beer-Lambert Law from the strength of the light at the light reception locations, a plurality of relational expressions are determined indicating the relationship between the concentration of the fluid and the strength of light when receiving light from each of the plurality of light supply locations respectively at the plurality of light reception locations; by means of combining the relational expressions with respect to the plurality of light supply locations, a relational expression is determined indicating the relationship between the concentration of the fluid and the strength of light at the plurality of light reception locations; and on the basis of the relational expression, the concentration of the fluid is determined from the strength of light at the plurality of light reception locations, and is output.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 33/49 - Physical analysis of biological material of liquid biological material blood
12.
FLUID CONCENTRATION MEASUREMENT METHOD AND MEASUREMENT DEVICE
[Problem] To highly precisely measure the concentration of a fluid such as a chemical or blood flowing within a duct even if light emission strength, the wall thickness of the duct, or the like is unclear or varies. [Solution] The present invention is characterized in that: when measuring the concentration of a fluid flowing within a duct having a light-transmissive tube wall, light is supplied from a light source into the duct at a plurality of light supply locations on the surface of the duct arranged adjacent to each other along the direction of extension of the duct; at each of a plurality of light reception locations on the surface of the duct positioned at the reverse side in the diametral direction of the duct from the light supply locations, the arriving light is received that has been supplied and has traversed the interior of the fluid flowing within the duct and the interior of the wall of the duct, and the strength of the light is determined; on the basis of the Beer-Lambert Law from the strength of the light at the light reception locations, a plurality of relational expressions are determined indicating the relationship between the concentration of the fluid and the strength of light when receiving light from each of the plurality of light supply locations at the plurality of light reception locations; by means of combining the relational expressions with respect to the plurality of light supply locations, a relational expression is determined indicating the relationship between the concentration of the fluid and the strength of light at the plurality of light reception locations without including the duct wall thickness; and on the basis of the relational expression, the concentration of the fluid is determined from the strength of light at the plurality of light reception locations, and then is output.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 33/49 - Physical analysis of biological material of liquid biological material blood
[Problem] To provide an electrode pad, for use on a living organism, that can measure an electrocardiographic signal without being hindered by body-motion noise. [Solution] An electrode pad, for use on a living organism, that is attached to the skin of said living organism, detects an electrical signal, and supplies said electrical signal to an electrocardiograph. Said electrode pad for use on a living organism is characterized by the provision of a mesh-like electrode that extends along the skin, a conductive gel sheet that is layered on top of the electrode and extends along the surface of the skin, and a soft protective sheet that covers the layered electrode and conductive gel sheet.
[Problem] To prevent a connector from loosening or dislodging when not intended. [Solution] A lock-type luer taper connector which is provided with a male connector and a female connector each provided with a cylindrical part having a luer taper truncated cone shaped connection surface, the male connector having a nut which is rotatably inserted at the base part of the cylindrical part of the male connector, which controls movement in the axial direction by engaging with the base part, and which has a female screw, the female connector having ridges which protrude externally in the radial direction from the tip section of the cylindrical part of the female connector, and the female screw of the nut screwing in with the ridges in the tip section of the female connector and locking the nut, thus maintaining an interlock between the connection surfaces of the male connector and the female connector. The lock-type luer taper connector is characterised in that the female screw of the nut and/or the ridges in the female connector comprise a lock part which closely or tightly engages with the other among the female screw of the nut and the ridges in the female connector when in a screwed state, and applies resistance to the relative rotation of the nut and the female connector.
[Problem] To provide an electrocardiograph capable of stably measuring an electrocardiac signal without being disturbed by body motion noise. [Solution] An electrocardiograph measures an electrocardiac signal by processing electric signals detected by using a plurality of bioelectrode pads attached to the skin of a living body and is characterized as follows. The bioelectrode pads each comprises: a plurality of sheets of electrodes disposed by being stacked on each other; conductive gel sheets disposed alternately with the sheets of electrodes and interposed between the electrodes; and a dynamic pressure stabilizing plate disposed by being stacked in a stacked direction of the sheets of electrodes, on the side opposite to the side of the skin, outside the sheets of electrodes. The electrocardiograph comprises: a first differential circuit for obtaining an electrocardiac source signal by taking the difference between signals each obtained from any one of the electrodes of each of two bioelectrode pads among the plurality of bioelectrode pads; a second differential circuit for obtaining a body motion noise signal by taking the difference between signals obtained from any two of the electrodes of each of said two bioelectrode pads; and a body motion noise removing circuit for removing the low frequency components of the body motion noise signal of each of said two bioelectrode pads from the electrocardiac source signal.
[Problem] To provide a respiration detection device which is inexpensive, can be favorably fitted, and is highly sensitive. [Solution] A respiration detection device, characterized in comprising: a reference plate (3) fitted onto the abdomen of a subject such that both end parts thereof are supported on the abdomen, with a recess positioned between the two end parts facing the abdomen (A) of the subject; a pressure-receiving plate (4) for receiving pressure (P) from the abdomen, the pressure-receiving plate being disposed within the recess of the reference plate so as to be able to move with respect to the two end parts, and abutting against the abdomen; and a pressure sensor (5) for detecting pressure applied to the pressure-receiving plate from the abdomen, the pressure sensor being interposed between the reference plate and the pressure-receiving plate.
This object aims to produce a low concentration alcohol gas with high accuracy by a compact device. The device for producing a reference concentration alcohol comprises a carburetor (4) having an air intake inlet (2) and an electric heater (3) disposed in a container inside the device, a supply unit (5) for supplying alcohol aqueous solution of a predetermined concentration by a predetermined quantity to the high temperature side surface of the electric heater in the container, a cylinder (9) which is interconnected with the carburetor and the discharging outlet and into which a piston (8) is so inserted in airtight as to be capable of reciprocating, and two opening/closing valves (10, 11) interposed between the carburetor and the cylinder and between the outlet and the cylinder, respectively.
patents
