Abstract: A cuff pressure adjusting device includes: a gas feeding unit which feeds a gas into a cuff by a pressing manipulation performed by a user; a cuff pressure detection unit which detects a pressure in the cuff; and a display unit which displays the pressure detected by the cuff pressure detection unit. The gas feeding unit includes: an elastic hollow body which is deformed so as to reduce an inner volume with reception of a pressing manipulation; and a support member which is disposed adjacently to the elastic hollow body in a direction along which the pressing manipulation is performed.

Abstract: A manufacturing method of a fluid control device is provided. Firstly, a housing, a piezoelectric actuator and a deformable substrate are provided. The piezoelectric actuator includes a piezoelectric element and a vibration plate having a bulge. The deformable substrate includes a flexible plate and a communication plate. The flexible plate includes a movable part. Then, the flexible plate and the communication plate are stacked on and coupled with each other to form the deformable substrate. Then, the housing, the piezoelectric actuator and the deformable substrate are sequentially stacked on each other and coupled with each other. A synchronous deformation process is implemented by applying at least one external force to the deformable substrate, so that the flexible plate and the communication plate of the deformable substrate are subjected to a synchronous deformation, and a specified depth between the movable part and the bulge of the vibration plate is defined.

Abstract: A case for a mobile device including a body with a fluid chamber configured to retain fluid therein. An armband for a mobile device includes a band with a fluid chamber configured to retain fluid therein. The fluid chamber may serve to cushion the mobile device or wearer's arm when in use.

Abstract: A piezoelectric pump is provided with an actuator containing a piezoelectric element and a vibrating sheet; a first diaphragm, positioned opposite the actuator, with a first connecting hole provided therein; a pump chamber formed by the space between the actuator and the first diaphragm; and a second diaphragm positioned opposite the first diaphragm. The part of the second diaphragm opposite the first connecting hole is provided with an opposing wall portion that prevents a fluid that has been introduced into the pump chamber via the first connecting hole from flowing back towards a suction side via the first connecting hole.

Abstract: In a fluid control device, a check valve includes a first valve housing and a first diaphragm. The first diaphragm defines a first valve chamber and a second valve chamber. An exhaust valve includes a second valve housing and a second diaphragm. The second diaphragm defines a third valve chamber and a fourth valve chamber. The check valve is opened and closed by a difference in pressure between the first valve chamber and the second valve chamber. The exhaust valve is opened and closed by a difference in pressure between the third valve chamber and the fourth valve chamber.

Abstract: An embodiment of a semi-automatic sphygmomanometer apparatus that provides a means for initiating and terminating inflation of a vascular cuff is disclosed. The semi-automatic sphygmomanometer apparatus includes a motor that operates a pump which generates air pressure to inflate the vascular cuff, wherein operation of the pump is initiated when the inflationary button is depressed and wherein operation of the pump is terminated when the inflationary button is released.

Abstract: A blood pressure measurement system is provided that includes an inflatable cuff, a valve assembly and chamber assembly. The chamber assembly can house a gas canister for providing gas to the inflatable cuff. The valve assembly can include a valve having a high pressure cavity, a low pressure cavity, and a channel providing a gas pathway between the high pressure cavity and the low pressure cavity. The valve assembly can further include a channel cover and spring in the high pressure cavity. The spring can exert a force on the channel cover to create a seal between the high pressure cavity and the channel. The valve assembly can further include a rod extending through the channel and exerting a force on the channel cover to create a gas pathway between the high pressure cavity and the channel.

Abstract: A flow rate control valve includes a casing provided with an inlet port and an outlet port through which a fluid, the flow rate of which should be controlled, flows in and out, a diaphragm that partitions a space inside the casing into a flow space in which the fluid flows and a working space in which a working medium is present, and a valve body provided on a portion of the diaphragm that opposes the inlet port. The diaphragm is displaced in accordance with a change in the internal pressure of the working space, and the valve body is accordingly moved. This results in a change in the distance between the valve body and the inlet port, and thus the flow rate of the fluid flowing into the flow space through the inlet port is adjusted. Therefore, the flow rate of the fluid flowing out through the outlet port is variably controlled.

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.

Abstract: Disclosed is a sphygmomanometer exhaust valve having a valve that functions as a lever, and in which a solenoid moves the point of force of the valve to urge a valve membrane formed at the point of action against a ventilation port. A support member supports the valve while fixing its fulcrum. When no electric current is supplied to the solenoid, the support member holds the valve in a predetermined position in which the ventilation port is open.

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.

Abstract: A deflation control valve that automatically varies the rate of gas flow through said control valve to maintain a constant deflation rate during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable, wherein said control valve is manually adjustable to set the deflation rate.

Abstract: A flow rate control valve includes a casing provided with an inlet port and an outlet port through which a fluid, the flow rate of which should be controlled, flows in and out, a diaphragm that partitions a space inside the casing into a flow space in which the fluid flows and a working space in which a working medium is present, and a valve body provided on a portion of the diaphragm that opposes the inlet port. The diaphragm is displaced in accordance with a change in the internal pressure of the working space, and the valve body is accordingly moved. This results in a change in the distance between the valve body and the inlet port, and thus the flow rate of the fluid flowing into the flow space through the inlet port is adjusted. Therefore, the flow rate of the fluid flowing out through the outlet port is variably controlled.

Abstract: A sphygmomanometer with an accessory low-speed pressure release device comprises: a main body, having a multi-channel pipeline, and a pressure pump coupled to the multi-channel pipeline; a circuit device, including a microprocessor and a pressure sensor, and the pressure sensor is coupled to the multi-channel pipeline, and the circuit device is coupled to the pressure pump through an electric circuit; a cuff device, coupled to the multi-channel pipeline through an air channel; and an accessory low-speed pressure release device, installed on the air channel and disposed outside the main body, so that the accessory low-speed pressure release device is adjusted according to the cuffs of different sizes and operated at an optimal air release speed to obtain measurements more quickly and accurately when cuffs of different sizes are used.

Abstract: In a fluid control device, a check valve includes a first valve housing and a first diaphragm. The first diaphragm defines a first valve chamber and a second valve chamber. An exhaust valve includes a second valve housing and a second diaphragm. The second diaphragm defines a third valve chamber and a fourth valve chamber. The check valve is opened and closed by a difference in pressure between the first valve chamber and the second valve chamber. The exhaust valve is opened and closed by a difference in pressure between the third valve chamber and the fourth valve chamber.

Abstract: A blood pressure measurement system includes an article of clothing, an occluding cuff, a blood pressure measurement unit, a first transmission module, and an operation module. The clothing includes tarpaulin. The occluding cuff is disposed at an inner side of the tarpaulin. The blood pressure measurement unit is disposed at the inner side of the tarpaulin for measuring blood pressure of a user to generate a blood pressure measurement result of the user, controlling a removable inflation module to inflate the occluding cuff, controlling a deflate valve to deflate the occluding cuff, and transmitting the blood pressure measurement result. The first transmission module is used for receiving the blood pressure measurement result. The operation module is coupled to the first transmission module for calculating diastolic blood pressure, systolic blood pressure, and/or pulses of the user according to the blood pressure measurement result.

Abstract: A femoral compression device (21) for compressive bearing 27b against the femoral artery of a patient, comprising a base plate (22); an inflatable air cushion (24) attached to the base plate; a first extension (23a) extending from a first side of the base plate; a second extension (23b) extending from a second side of the base plate, said second side being opposite to the first side; a belt (25) adapted to be attached to an end of the first extension and being adapted to extend around the patient's body to be attacked to an end of the second extension; a pump (26) for inflation of the inflatable air cushion; an air connection (27a, 27b, 27?) with a first end and a second end and connecting the pump at a first end and the air cushion at the second end, and a manometer (28) arranged for measurement of the current pressure difference between pressure prevailing inside the air connection and ambient air pressure.

Abstract: A sphygmomanometer, in a deflation process after inflation to prescribed pressure adjusts a drive voltage of an exhaust valve such that a deflation speed of a fluid bag achieves a prescribed deflation speed during an adjustment period, which is a prescribed period after starting deflation. When the adjustment period ends or when the deflation speed of the fluid bag achieves the prescribed speed, control is subsequently performed to fix the drive voltage of the exhaust valve and deflate the fluid bag while holding a gap of the exhaust valve constant.

Abstract: An automatic blood pressure monitor having a housing containing a first water and air tight chamber and a second air supply chamber, the chambers being separated by a common wall. Pneumatic equipment is mounted in the first chamber having a flow circuit for inflating and deflating a blood pressure cuff. A filtering unit is mounted in the common wall for retaining particulate material and moisture that is exchanged between the two chambers. The flow circuit has an air inlet port and an air exhaust port which are both located adjacent to the filter contained in the filtering unit whereby particulate material and moisture drawn into the flow circuit is retained upon the filter during inflation cycle and the particulate material and moisture retained on the filter is blown back into the air supply chamber during the deflation cycle. A drain is mounted in the floor of the air supply chamber through which particulate material and moisture collected in the chamber is discharged to the surrounding ambient.

Abstract: The electric-powered air release valve comprises a nozzle, a fixed iron core; an excitation coil; a movable iron plate; a leaf spring: a rubber valve; and a yoke; wherein a circular hole capable of accommodating a circular column part at one end of the fixed iron core when the movable iron plate is moved toward the nozzle is formed in the movable iron plate; and a magnetic gap is maintained between an internal periphery of the circular hole and an external periphery of the circular column part at one end of the fixed iron core.

Abstract: Disclosed is an automatic decompression valve for sphygmomanometer with an extension spring, which can decompress pressure at a constant without control of the decompression vale of the sphygmomanometer, and be used uprightly regardless of a peripheral circumstance. The automatic decompression valve includes: a valve body having an inlet through which air is introduced from a cuff therein, and an outlet through which the introduced air is exhausted; a piston having a piston shaft for moving toward the outlet in the valve body; a spring having one end connected to the piston; a three-way valve provided with a connector with which the valve body is assembled, and air inlet and outlet, the three-way valve being connected to the other end of the spring; and a support for supporting the three-way valve.

Abstract: A bleed flow valve assembly for venting air from a blood pressure cuff at relatively constant pressure decrease rate irrespective of cuff size includes a multiple chamber bleed valve and a multiple position control valve operatively associated therewith. A first end chamber is connected in pneumatic communication with the cuff and pneumatically sealed from a second central chamber by a first flexible diaphragm. A third end chamber is separated from the central chamber by a second flexible diaphragm. A variable flow area opening through the second diaphragm provides a flow path for controllably venting air from the second chamber to ambient pressure when the control valve is selectively positioned to connect the third chamber in pneumatic communication with ambient pressure. Air is vented from the cuff through the first chamber in regulated response to the pressure differential between the first chamber and the second chamber acting upon the first flexible diaphragm.

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

Abstract: To better position an ultrasonic transducer typically used in non-invasive fetal monitoring during labor, the present invention consists of a transducer-aligning device having a plurality of selectively fillable chambers, each chamber having a resiliently deformable side-wall. A fluid, such as air, can be selectively pumped or released into any combination of the chambers. When coupled to an ultrasonic transducer, the selective use of air pressure in the bladder more precisely aligns and positions the fetal monitor transducer to improve imaging. In a second embodiment, the present invention includes a solid wedge-shaped protrusion extending below the bottom surface of the housing and adapted to rotate about 360-degrees to enable a care-giver to selectively position the wedge and thus align the associated transducer for optimal readings of fetal heart rate.

Abstract: A pressure relief device for an air inflator includes a pipe connector, a seal member, a check valve mounting ring, a check valve, an air cell connector, and a pressure relief control ring. Thus, the pressure relief control ring is tightened to perform the air inflating action and loosened to perform the pressure relief action, so that the air inflating action and the pressure relief action are performed along the same axis, and the pressure relief device has a co-axial operation function, thereby facilitating the user inflating and deflating the inflatable body. In addition, the air inlet hole is not mounted in the air cell to facilitate the user compressing the air cell.

Abstract: A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. The actuator is provided in the pump chamber. An exhaust valve is provided with a valve body, formed with a slit through which air the pump chamber is exhausted, and a screw member, screwed into a first wall of the pump case to adjust an opening amount of the slit by a screwed amount thereof, thereby adjusting an exhausting rate of the air in the pump chamber. The pump case is formed with a ventilation hole communicated with the pump chamber to allow the air exhausted from the slit to pass through.

Abstract: A pressing cuff presses a pressure sensor above an artery. The level of the pressure applied to the pressure sensor is changed while the pulse wave is measured based on information about the pressure from the pressure sensor. In order to adjust the level of the applied pressure using the pressure of gas in the pressing cuff, a three-port valve and a two-port valve are controlled so that the connection is changed to establish a state of holding the amount of the gas in the pressing cuff. Then, the state is changed to a state of isolating and discharging gas in which a part of the held gas is isolated from the remaining amount of the gas to be discharged. Then, the state is changed to the state of holding the remaining amount of gas in the pressing cuff.

Abstract: Blood collecting devices for collecting blood from a patient using a single needle insertion are disclosed. Each blood collecting device typically includes a housing which is removably attached to a test tube or blood reservoir. A blood flow tube is disposed in fluid communication with the housing for distributing blood from a patient into the test tube or blood reservoir. The blood is distributed through a membrane cavity having a liquid-impervious and air-permeable membrane. At least one air opening is provided in the housing at the membrane cavity. Accordingly, air in the test tube or blood reservoir is displaced by the incoming blood through the membrane cavity and membrane and out the air opening or openings. Vacuum pressure in the test tube or blood reservoir is dispelled by the flow of air through the air opening or openings, membrane cavity and membrane and into the test tube or blood reservoir, respectively.

Abstract: A pressure-dependent automatic leak valve for sphygmomanometers is able to regularly reduce the pressure in a cuff without manipulation of a pressure reducing valve. Fluid resistance of air to be discharged through the pressure-dependent automatic leak valve is automatically changed so that air is discharged at a constant rate, and the pressure in the cuff is reduced at a constant speed.

Abstract: A diaphragm is provided in a pump case so as to define a pump chamber communicated with an external member having an air chamber. A motor actuates the diaphragm to introduce air into the pump chamber and to supply the introduced air to the air chamber. An exhaust valve exhausts air in the pump chamber to lower a pressure in the air chamber. The exhaust valve is provided with a valve body and an actuator which is driven by the motor to actuate the valve body so as to open or close an exhaust port communicated with the pump chamber.

Abstract: Disclosed is an automatic decompression valve for sphygmomanometer with an extension spring, which can decompress pressure at a constant without control of the decompression vale of the sphygmomanometer, and be used uprightly regardless of a peripheral circumstance. The automatic decompression valve includes: a valve body having an inlet through which air is introduced from a cuff therein, and an outlet through which the introduced air is exhausted; a piston having a piston shaft for moving toward the outlet in the valve body; a spring having one end connected to the piston; a three-way valve provided with a connector with which the valve body is assembled, and air inlet and outlet, the three-way valve being connected to the other end of the spring; and a support for supporting the three-way valve.

Abstract: Disclosed is a sphygmomanometer exhaust valve having a valve that functions as a lever, and in which a solenoid moves the point of force of the valve to urge a valve membrane formed at the point of action against a ventilation port. A support member supports the valve while fixing its fulcrum. When no electric current is supplied to the solenoid, the support member holds the valve in a predetermined position in which the ventilation port is open.

Abstract: A deflation control valve that automatically varies the rate of air flow through said control valve to provide a constant but adjustable rate of change of pressure during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable comprising a valve body having a passage communicatable with said pressurisable vessel, said valve body defining a valve chamber communicating with said passage in which a flexible diaphragm is provided partially or substantially closing said valve chamber, said diaphragm being in sealing abutment with a seat in said valve housing around the periphery of said diaphragm, and forming on the opposing side a part of an exhaust chamber, said diaphragm, in use, being, on the valve chamber side subject to the gas pressure in said pressurisable vessel and, on the opposing side, subject to the gas pressure in the exhaust chamber, which may be atmospheric pressure, and said diaphragm having an aperture or port extending therethrough, and said diaph

Abstract: A deflation control valve that automatically varies the rate of air flow through said control valve to provide a constant but adjustable rate of change of pressure during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable comprising a valve body having a passage communicatable with said pressurisable vessel, said valve body defining a valve chamber communicating with said passage in which a flexible diaphragm is provided partially or substantially closing said valve chamber, said diaphragm being in sealing abutment with a seat in said valve housing around the periphery of said diaphragm, and forming on the opposing side a part of an exhaust chamber, said diaphragm, in use, being, on the valve chamber side subject to the gas pressure in said pressurisable vessel and, on the opposing side, subject to the gas pressure in the exhaust chamber, which may be atmospheric pressure, and said diaphragm having an aperture or port extending therethrough, and said diaph

Abstract: An automatic non-invasive blood pressure monitoring system includes a blood pressure monitor, a blood pressure cuff pneumatically connected to the blood pressure monitor, a deflation valve connected intermediate the blood pressure monitor and the blood pressure cuff, and a controller for automatically controlling the non-invasive blood pressure monitoring.

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.

Abstract: A low cost tourniquet cuff with identification apparatus comprises: an outer strip; an inner strip positioned against the outer strip; a gas-tight seal joining the inner strip to the outer strip to form a cuff having a physical characteristic wherein the cuff includes an inflatable bladder of a predetermined length greater than the circumference of a limb at a selected location; and a cuff connector carried on the cuff and communicating pneumatically with the bladder for releasably connecting to a tourniquet instrument to establish a gas-tight passageway between the bladder and the instrument, wherein the cuff connector includes identification means indicative of the physical characteristic and detectable by the tourniquet instrument upon establishment of the gas-tight passageway.

Abstract: A biomedical apparatus is disclosed including an implantable biomedical device for providing biomedical assistance to the body structure and a device controller for regulating the operation of the biomedical device. A sonomicrometer arrangement is provided, in contact with the body structure and in communication with the device controller. The sonomicrometer arrangement ultrasonically measures at least one physical parameter of the body structure and provides feedback information to the device controller. The device controller then regulates the operation of the biomedical device in response to the feedback information.

Abstract: There are provided a casing (21), a valve element (23) that effects opening/closure of an evacuation port (22), and means for driving (24) that effect opening/closure drive of this valve element. Fine irregularities (23b) are formed on valve element (23). The means for driving comprise: a cylindrical yoke (25); a core (26) provided with a cylindrical part (26a) arranged within the yoke and a flange (26b) that is abutted by one end of the yoke; a magnet (27) arranged within the yoke and that forms magnetic flux in the radial direction; a movable element (28) arranged through the cylindrical part of the core with the valve element mounted at one end; a coil (29) arranged in the gap between the magnet and yoke and fixed at one end of the movable element; and holding members (30) that hold both ends of the movable element and that hold the movable element and coil in non-contacting condition with respect to the core and yoke.

Abstract: A gauge is provided, preferably for patient use, in which a piston moves linearly within a gauge body against the force of a spring. A diaphragm separates the sensing side of the piston from the clean or atmosphere side of the piston. The diaphragm rolls against the piston and the wall of the chamber during changes in pressure, and does not interfere with accuracy of the readings. Dampening is provided out of the patient fluid stream. The sight glass through which measurements are read produces an optical magnification. A baffle prevents entrained particles from the patient from entering the gauge in significant amounts. A surface-to-surface seat enables the gauge to be mounted as a saddle seat on a duct, regulator or the like.

Abstract: A constant-rate deflator for constantly reducing air pressure of a cuff-type sphygmomanometer is disclosed. The constant-rate deflator includes a ventilation-adjusting shaft 2 with a truncate-cone recess 2a formed in one of the end thereof and a leak valve 1 with a hole 1b formed in the center thereof, the leak valve having a projection 1c opposing the recess of the ventilation-adjusting shaft and has the same truncated cone shape as the recess, wherein the rate of deflation is kept constant by adjusting the clearance between the projection of the leak valve and the recess of the ventilation-adjusting shaft.