Patent ID: 11944415
Assignee: MASIMO CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC A  F | IPC A  F

Claim 0:
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.