Air flow control for hemodynamic measurement cuff

A flow regulator for use with a hemodynamic parameter measurement apparatus,

• the apparatus comprising:
• a source of pressurized fluid, a measurement cuff comprising an inflatable bladder, and a fluid supply path for conveying pressurized fluid from the source of pressurized fluid to the bladder of the measurement cuff;
• and
• the flow regulator disposed along the fluid supply path between the pressurized fluid source and the inflatable bladder of the measurement cuff,
• wherein the flow regulator comprises:
• a flow modulator for modulating a flow rate of fluid flowing along the fluid supply path, and wherein the flow modulator provides a variable level of flow modulation across a range between a minimum level of flow modulation and a maximum level of flow modulation,
• wherein at least a portion of the flow modulator has an adjustable physical configuration, wherein adjustment of the physical configuration varies the level of flow modulation;
• wherein the flow modulator includes a pressure coupling area arranged to be in pressure-coupled relationship with the pressurized fluid flowing along the fluid supply path, and
• wherein said physical configuration of the at least portion of the flow modulatory varies passively as a function of the pressure acting on the pressure coupling area, such that the level of flow modulation decreases as a function of pressure.