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US 4,539,849 AGranted
Transducer assembly including a disposable dome
AssigneeAmerican Hospital Supply Corporation
InventorKelly Pike
Life of this patent
Estimating the term…
Abstract
A transducer assembly comprising a transducer housing, a retainer mounted on the housing for generally axial movement relative to the housing and a collar for relatively moving the retainer and the housing along the path between a locking position and a releasing position. The transducer assembly also includes a dome which is coupled to the housing by cooperating lugs and retaining flanges on the dome and the retainer, respectively.
Claims16
A dome for attachment to a pressure transducer, said dome comprising:
- a body having a recess therein which opens at the exterior of the body;
- a flexible diaphragm;
- means for mounting the diaphragm on the body with the diaphragm extending across the recess to form a chamber in the body;
- said body having port means for providing communication through said body between the chamber and the exterior of the body whereby fluid can be admitted to said chamber;
- a plurality of exposed, circumferentially spaced lugs extending generally radially outwardly from the exterior of the body for use in attaching the dome to the pressure transducer;
- and
- said body having a shoulder on the exterior of the body spaced from the lugs to define an intermittent circumferentially extending groove which opens generally radially.
4 more elements
An assembly for making a measurement of a characteristic of a body fluid, said assembly comprising:
- a housing;
- a retainer;
- means for mounting the retainer on said housing for movement along a generally axial path relative to the housing;
- actuating means for relatively moving the retainer and the housing along said path between a locking position and a releasing position;
- a dome having a chamber therein, said dome including port means for providing communication between the chamber and the exterior of the dome whereby the body fluid can communicate with the chamber and a member at least partially defining said chamber for transmitting a signal related to the characteristic of the body fluid out of said chamber;
- coupling means at least partially on said dome and said retainer responsive to the retainer being in said locking position for coupling the dome to the housing, said coupling means being releasable when the retainer is in the releasing position;
- and
- means at least partially within said housing for sensing said signal which is related to said characteristic of the body fluid.
5 more elements
A dome for attachment to a pressure transducer, said dome comprising:
- a body having a recess therein which opens at the exterior of the body;
- a flexible diaphragm;
- means for mounting the diaphragm on the body with the diaphragm extending across the recess to form a chamber in the body;
- said body having port means for providing communication through said body between the chamber and the exterior of the body whereby fluid can be admitted to said chamber;
- a plurality of exposed, circumferentially spaced lugs extending generally radially outwardly from the exterior of the body for use in attaching the dome to the pressure transducer;
- said body having a shoulder on the exterior of the body spaced from the lugs to define a circumferentially extending groove which opens generally radially;
- said shoulder being annular and lying in a generally radial plane;
- and
- a stop on said body between one of said lugs and the shoulder.
6 more elements
A dome for attachment to a pressure transducer, said dome comprising:
- a body having a recess therein which opens at the exterior of the body;
- a flexible diaphragm;
- means for mounting the diaphragm on the body with the diaphragm extending across the recess to form a chamber in the body;
- said body having port means for providing communication through said body between the chamber and the exterior of the body whereby fluid can be admitted to said chamber;
- a plurality of exposed, circumferentially spaced lugs extending generally radially outwardly from the exterior of the body for use in attaching the dome to the pressure transducer;
- said body having a bearing surface which is adapted to bear against the pressure transducer;
- and
- a stop on said body adjacent one of said lugs, said one lug being intermediate the stop and the bearing surface.
5 more elements
Dependencies are inferred from the claim text.