CPC A61B 5/0235 (2013.01) [A61B 5/02233 (2013.01); F16K 1/302 (2013.01); F16K 1/303 (2013.01); F16K 13/04 (2013.01)] | 17 Claims |
1. A blood pressure measurement system, comprising:
an inflatable cuff configured to encompass a limb of a patient;
a chamber assembly configured to house a gas canister having gas for inflating the inflatable cuff;
a valve assembly coupled to the chamber assembly; and
a gas pathway between the valve assembly and the inflatable cuff, wherein the valve assembly includes:
a valve comprising a high pressure cavity, a low pressure cavity, a first channel providing a gas pathway between the high pressure cavity and the low pressure cavity, and a second channel providing a gas pathway between the low pressure cavity and a valve output,
a channel cover and a first pressure ring located within the high pressure cavity,
a spring exerting an upward force on the channel cover and the first pressure ring to create a seal between the high pressure cavity and the first channel, and
a rod extending from the low pressure cavity to the high pressure cavity via the first channel and exerting a downward force on the channel cover to provide a gas pathway between the high pressure cavity and the first channel.
|