An airbag (10), a blood pressure measurement apparatus, and a blood pressure measurement method are provided. The blood pressure measurement apparatus includes a cavity (20), a pressing part (30), an air pump (40), a barometric pressure sensor (50), and an airbag (10). The airbag (10) is long-strip-shaped, the airbag (10) has a fixed end (113) and a free end (115), the fixed end (113) is fixed in the cavity (20), a plurality of grooves (101) are distributed on a surface of the airbag (10) along a length extension direction, and the grooves (101) extend along a width direction of the airbag (10). Each groove (101) can divide the airbag (10) into a pressurized area (110) and a non-pressurized area (115) along the length direction when the pressing part (30) movably disposed in the cavity (20) is pressed against the groove (101). The pressurized area (110) and the non-pressurized area (115) isolate air flow from each other, air holes (102) connecting the inside and the outside of the airbag (10) are distributed between every two adjacent grooves (101), and the cavity (20) is configured to accommodate the non-pressurized area (115) of the airbag (10), and when the airbag (10) does not work, accommodate the entire airbag (10). The blood pressure measurement apparatus in this application can adjust ratios of the pressurized area to wrist circumferences of different people. This improves blood pressure signal collection stability and blood pressure measurement accuracy.

A fluid circuit of a blood pressure measurement device includes a first cuff connected to a secondary side of a pump that supplies a fluid to a secondary side, a second cuff connected to a secondary side of the first cuff, a first valve provided between the first cuff and the second cuff, the first valve that closes when a differential pressure between the first cuff and the second cuff reaches a predetermined differential pressure, and a fluid resistor provided between the first valve and the second cuff.

A tourniquet includes a surrounding device, a measuring portion, and an elastic band portion connected in series, wherein the measuring portion defines an accomodating space for placing an air bag device with an elastic air bag. A radial resonant ring formed by connecting the measuring portion and the elastic band portion in series can reduce the influence of non-radial vibration, so as to improve the sensitivity and accuracy of the radial resonance of the tourniquet of the present disclosure.

A cuff structure is provided in a curler of a blood pressure measurement device that includes a device body and the curler provided on the device body. The curler curves following along a circumferential direction of a wrist. The cuff structure includes a sensing cuff provided on a side of an inner circumferential surface of the curler and contacting a region where an artery is present in the wrist and a pressing cuff having a portion provided between the curler and the sensing cuff, having a portion of another portion of the cuff disposed in a region where the sensing cuff is present in an outer circumferential surface of the curler with the blood pressure measurement device attached to the wrist, and inflating to press the sensing cuff to the wrist.

To provide a cuff structure capable of improving measurement accuracy of blood pressure, and a blood pressure measurement device. A cuff structure includes a sensing cuff configured in shape that is long in one direction and coming into contact with a region of a wrist where an artery is present, a pressing cuff configured in a shape that is long in one direction, provided on a side of the sensing cuff opposite from the wrist side surface, and pressing the sensing cuff against the wrist by being inflated, and a wall portion provided along at least one edge portion along a longitudinal direction of the sensing cuff and having a leading end surface on the wrist side coming into contact with the wrist.

A fluid circuit of a blood pressure measurement device includes a first cuff connected to a secondary side of a pump that supplies a fluid to the secondary side, a first fluid resistor connected to a secondary side of the first cuff, a second fluid resistor provided on a secondary side of the first fluid resistor and connected to an atmosphere, and a second cuff provided between the first fluid resistor and the second fluid resistor.

A blood flow stimulator may help encourage blood flow in a limb of a patient. The blood flow stimulator may include a housing configured for sealing about the limb of the patient. The housing may include a sealable volume, and the sealable volume may receive the limb of the patient. The blood flow stimulator may include a seal, and the seal may be coupled with the housing. The seal may engage with at least a portion of the limb, for instance to segregate the sealable volume from a surrounding environment of the blood flow stimulator. The blood flow stimulator may include a conduit extending through the housing. The conduit mat help provide access to the sealable volume, for instance from the surrounding environment. In some examples, an adjustable stent is utilized to enhance blood flow within vasculature of a patient. A stent operator may change a size of the stent.

The present specification describes methods and systems for on-inflate non-invasive blood pressure (NIBP) measurement suitable for cuffs of various sizes. In embodiments, an adapter hose connecting the cuff to the NIBP device is dynamically identified. Embodiments provide a restriction in at least one of the valves in the NIBP device to enable a controlled release of air from the device during the cuff inflation process.

A gas control device includes a pump, a valve, a cuff, and a controller. The valve includes a first plate having a first vent hole and a first vent hole, a channel forming plate having an exhaust hole and an exhaust channel, a second plate having a second vent hole, and an edge separation plate. A manchette rubber tube in the cuff is joined to the periphery of the second vent hole in the second plate by an adhesive, and thus the valve is connected to the cuff. The exhaust hole is opened to the atmosphere. The pump includes a pump housing having a discharge hole and a discharge hole. The upper surface of the pump housing is joined to the bottom surface of the edge separation plate.

An electronic device for measuring blood pressure includes a measurement assembly, an airbag, and a fluid pipeline, where a fluid pump and a pressure sensor in the measurement assembly are connected to the airbag through a first fluid pipeline and a second fluid pipeline respectively, a first nozzle in the first fluid pipeline and a second nozzle in the second fluid pipeline are located on a same side of the airbag, and an opening direction of one of the first nozzle and the second nozzle is away from that of the other, so that the first nozzle and the second nozzle are away from each other. This reduces impact on the pressure sensor caused by airflow in the airbag, and improves blood pressure measurement accuracy.