Infusion device with disposable elements
First Claim
1. A device for pumping fluid from a fluid source to a patient, comprising:
- a fluid delivery conduit disposed between said fluid source and said patient;
a pump which draws fluid from said fluid source, through said delivery conduit, and to said patient; and
a single optical occlusion sensor responsive to dimensional changes in said fluid delivery conduit and optically sensing occlusions both upstream and downstream from said pump.
10 Assignments
0 Petitions
Accused Products
Abstract
An infusion device with a disposable administration set which is inexpensive to manufacture. In the preferred embodiment of the present invention the disposable administration set has a plurality of elongated cam followers connected to a plate assembly, wherein the cam followers are displaced in a predetermined sequence and forced against a delivery tube by cam means driven by rotary drive means. The device also includes an optical occlusion sensor which is synchronized to operate in phase with the movement of the cam followers to measure pressure within the delivery tube at one pump phase, thereby sensing downstream occlusions, and to measure vacuum within the delivery tube at a second pump phase, thereby sensing upstream occlusions. The occlusion sensor is optical, and measures the degree of total internal reflection at the interface of the tube and the plate assembly. occlusion in the tubing.
227 Citations
40 Claims
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1. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit, and to said patient; and a single optical occlusion sensor responsive to dimensional changes in said fluid delivery conduit and optically sensing occlusions both upstream and downstream from said pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit, and to said patient; and an upstream optical occlusion sensor which periodically senses dimensional changes of said fluid delivery conduit to optically measure vacuum in said fluid delivery conduit. - View Dependent Claims (11, 12, 13, 14)
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15. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source through said fluid delivery conduit, said pump pinching the fluid delivery conduit closed at at least two pinching location, an upstream location and a downstream location; and an optical occlusion sensor located between said upstream and downstream locations defining a sensor location, said optical occlusion sensor responsive to a dimension of said fluid delivery conduit at said sensor location. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit, and to said patient; and means for sensing bubbles in said fluid and occlusions in said fluid delivery conduit which comprises a single sensor. - View Dependent Claims (26, 27)
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28. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit and to said patient; and a single optical sensor which senses total internal light reflection at a first location for sensing occlusions in said fluid delivery conduit, and total internal light reflection at a second location for sensing bubbles in said fluid.
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29. A device for pumping fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit, and to said patient; and an optical occlusion sensor synchronized to operate at two distinct phases of operation of said pump. - View Dependent Claims (30)
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31. A method of pumping fluid from a fluid source to a patient using a pump, comprising:
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connecting a fluid delivery conduit between said fluid source and said patient; pumping fluid from said fluid source, through said delivery conduit, and to said patient; connecting a single location on said fluid delivery conduit into fluid communication with the portion of said fluid delivery conduit between said fluid source and said pump, which defines a first phase of operation of said pump and into fluid communication with the portion of said fluid delivery conduit between said pump and said patient, which defines a second phase of operation of said pump, and optically sensing occlusions by monitoring a dimension of said fluid delivery conduit at said single location.
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32. An infusion pump for delivering fluid from a fluid source to a patient, comprising:
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a fluid delivery conduit disposed between said fluid source and said patient; a pump which draws fluid from said fluid source, through said delivery conduit, to said patient; and a three state optical sensor for measuring three different pump conditions by monitoring said fluid delivery conduit optically. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40)
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Specification