Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
In a throwaway physiological pressure system having a housing, improved sensor means comprising: displaceable means connected to said housing and responsive to fluid pressure to provide a reciprocative output corresponding to said fluid pressure; a strain isolator connected to said housing by a support and having a beam support surface, said support engaging a surface of said isolator other than said beam support surface and positioning said isolator so that said beam support surface is spaced from said housing, whereby said beam support surface is substantially free from thermally induced distortion caused by heat flow from said isolator to said housing and from said housing to said isolator; a deflectible beam defining opposite first and second surfaces, a distal end and a mounting end; means affixed to said beam and responsive to deflections of said beam for providing corresponding strain signals; and means for mounting said mounting end of the beam to said strain isolator with said second surface fixed to said beam support surface and with said distal end cantilevered from said strain isolator, said first surface being engaged by said displaceable means adjacent said distal end, whereby upon deflection of said beam by said displaceable means said first surface is placed in tension and said second surface is placed in compression.
Claim 2
Dependent Claim
213 words
In a throwaway physiological pressure system having a housing, improved sensor means comprising: displaceable means connected to said housing and responsive to fluid pressure to provide a reciprocative output corresponding to said fluid pressure; a strain isolator connected to said housing by a support and having a beam support surface, said support engaging a surface of said isolator other than said beam support surface and positioning said isolator so that said beam support surface is spaced from said housing, whereby said beam support surface is substantially free from thermally induced distortion caused by heat flow from said isolator to said housing and from said housing to said isolator; a deflectible beam defining opposite first and second surfaces, a distal end and a mounting end; means affixed to said beam and responsive to deflections of said beam for providing corresponding strain signals; and means for mounting said mounting end of the beam to said strain isolator with said second surface fixed to said beam support surface and with said distal end cantilevered from said strain isolator, said first surface being engaged by said displaceable means adjacent said distal end, whereby upon deflection of said beam by said displaceable means said first surface is placed in tension and said second surface is placed in compression.
Claim 3
Dependent Claim
20 words
The throwaway physiological pressure system of claim 1 wherein said second surface is adhesively bonded to said beam support surface.
Claim 4
Dependent Claim
24 words
The throwaway physiological pressure system of claim 1 wherein said means for providing strain signals comprises a strain gage carried on said first surface.
Claim 5
Dependent Claim
28 words
The throwaway physiological pressure system of claim 1 wherein said means for providing strain signals comprises a strain gage carried on said first surface at said mounting end.
Claim 6
Dependent Claim
16 words
The throwaway physiological pressure system of claim 1 wherein said beam comprises a resiliently deflectible crystal.
Claim 7
Dependent Claim
16 words
The throwaway physiological pressure system of claim 5 wherein said beam comprises a silicon crystal beam.
Claim 8
Dependent Claim
29 words
The throwaway physiological pressure system of claim 1 wherein said displaceable means includes a compliant diaphragm adapted to confront the fluid, the pressure of which is to be sensed.
Claim 9
Dependent Claim
23 words
The throwaway physiological pressure system of claim 1 wherein said displaceable means includes a frame interposed between said housing and said strain isolator.
Claim 10
Dependent Claim
32 words
The throwaway physiological pressure system of claim 8 wherein said strain isolator is connected to said frame by a pair of opposed supports, said supports engaging opposite side surfaces of said isolator.