Patent ID: 8672853
Filing Date: 2014-03-18
Classification: A61B,G01G,G01L

Abstract:
1. An apparatus for monitoring a subject at rest comprising: an inflatable bladder comprising a cavity containing a fluid and a hermetically sealed seam; a housing hermetically sealed within the seam, the housing having a distal end with a distal aperture there through opened to the cavity, a proximal end with a proximal aperture there through opened to atmosphere, and an opening accessing a recess having a track provided in each side wall of the recess; a pressure sensor having a sensing side exposed to the cavity of the inflatable bladder and a reference side exposed to ambient air within the recess of the housing; and a printed circuit board coupled to the pressure sensor, wherein the pressure sensor is operable to detect a pressure change within the cavity due to a force exerted by a subject on the inflatable bladder, wherein the pressure sensor and the printed circuit board are mounted on a planar base configured to slide within each track through the opening into the recess so that the pressure sensor and printed circuit board are fully within the recess.