Pulse oximetry sensor with improved appendage cushion
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United States of America Patent
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-
Jan 7, 2003
Grant Date -
Oct 24, 2002
app pub date -
Apr 20, 2001
filing date -
Apr 20, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention is directed to reusable, clip-type oximetry sensors that comprise opposing top and bottom members. In one aspect, the sensor includes a resilient spring member interposed between the top and bottom members to provide a closing force, wherein the resilient spring member comprises tensile and compressive portions. That is, upon positioning a patient appendage in the sensor different portions of the resilient spring member are in tension and in compression so as to combinatively provide an enhanced closing force utilized to secure the patient appendage between the top and bottom members. The resilient spring member may be of a molded, monolithic construction, comprising an elastomeric material. In another aspect, the inventive sensor includes cushions interconnected to the top and bottom members via snap-fit engagement. The snap-fit engagement may be provided by a plurality of interconnecting member pairs (e.g., projections and mating recesses), wherein the connection axes of the members comprising each pair are transversely disposed to yield enhanced interconnection via two-dimensional restraint between the cushions assemblies and top and bottom members.
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