Optical pressure monitoring system
1 Assignment
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Accused Products
Abstract
An optical pressure monitoring system includes a tube from an infusion set and an optical signal sensor disposed to detect changes in the diameter of the tube and thereby determine pressure changes within the tube. By selecting the position of the tube relative to the optical signal emitter and optical signal receiver, the optical signal sensor can both detect pressure changes and provide an integrity check for both the functioning of the optical signal sensor and the placement of the tube. By modifying the tube to exaggerate changes in tube diameter responsive to pressure changes, the sensitivity of the optical signal sensor can be increased.
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Citations
40 Claims
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1-25. -25. (canceled)
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26. An adapter for disposition along an infusion set, the adaptor comprising:
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a first connector for attaching an upstream portion of an infusion set to a tube configured for engaging a pump rotor;
a second connector for attaching a downstream portion of an infusion set to the tube configured for engaging the pump rotor, the second connector being attached to the first connector; and
an abutment member disposed adjacent to the first connector and the second connector, the abutment member being configured for deflecting a portion of the tube into a nonlinear position. - View Dependent Claims (27, 28)
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29. An apparatus for infusing solution into a patient, the device comprising:
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an infusion pump having a rotor for moving solution through a tube;
a infusion set having a tube engaged by the rotor of the infusion pump;
at least one optical signal sensor disposed along the tube, the optical sensor having an optical signal emitter and an optical signal receiver disposed on a side of the tube opposite from the optical signal emitter, the optical signal sensor being configured to detect changes in the diameter of the tube. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An apparatus for monitoring pressure in an infusion set for administering a solution to a patient, comprising;
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an optical signal sensor having an optical signal emitter and an optical signal receiver; and
a resilient tube positioned proximate said signal sensor, said optical signal emitter positioned to pass an optical signal at least partially over a surface of said tube to be received by said optical signal receiver.
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40. An apparatus for monitoring pressure in an infusion set for administering a solution to a patient, comprising:
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a housing;
an elongate flexible tube positioned within said housing;
an abutment member positioned within said housing engaging a surface of said elongate flexible tube for substantially preventing expansion of said elongate flexible tube in the direction of said abutment member; and
an optical signal sensor positioned adjacent said elongate flexible tube and opposite said abutment member for measuring expansion and contraction of said elongate flexible tube.
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Specification