Systems and methods for cassette identification for drug pumps
First Claim
1. A pump apparatus comprising:
- a control module including a processor and a pumping mechanism for pumping fluid through a fluid tube;
a base plate selectively mounted to the control module;
a fluid tube positioned between the base plate and the pumping mechanism of the control module;
a projection extending from the base plate toward the control module;
two reciprocally mounted plungers mounted to the control module; and
two optical sensors mounted to the control module, each of which is capable of sensing a portion of one of the plungers and sending a signal to the processor, the plungers being movable between first and second positions, the first position including the portion of the plunger positioned in a first position relative to the optical sensor, and the second position including the portion of the plunger positioned in a second position different from the first position, at least one of the plungers being moved by the projection.
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Accused Products
Abstract
The present invention concerns a pump provided with a control module and an attachable fluid reservoir cassette. The control module includes a pumping mechanism for pumping fluid from the fluid reservoir to the patient. The cassette is provided with appropriate indicia to identify differences between a plurality of cassettes. The control module further includes cassette indicia identification structure for identifying indicia on the cassette. One type of cassette identification system includes a projection extending from the cassette and structure associated with the control module which engages the projection. Another type of cassette identification system includes a light reflecting system which utilizes light from the control module and reflected off the cassette. Still other types of cassette identification systems utilize other non-contact switches or sensors to sense indicia on the cassette to identify the cassette from a plurality of cassettes.
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Citations
17 Claims
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1. A pump apparatus comprising:
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a control module including a processor and a pumping mechanism for pumping fluid through a fluid tube; a base plate selectively mounted to the control module; a fluid tube positioned between the base plate and the pumping mechanism of the control module; a projection extending from the base plate toward the control module;
two reciprocally mounted plungers mounted to the control module; andtwo optical sensors mounted to the control module, each of which is capable of sensing a portion of one of the plungers and sending a signal to the processor, the plungers being movable between first and second positions, the first position including the portion of the plunger positioned in a first position relative to the optical sensor, and the second position including the portion of the plunger positioned in a second position different from the first position, at least one of the plungers being moved by the projection. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A base plate for use with a control module having a projection sensing member comprising:
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a body having a main surface facing in a first direction and including first and second longitudinal sides, and first and second transverse ends; a pair of hooks extending from the main surface adjacent to the first transverse end; a loop extending from the main surface adjacent to the second transverse end; a plurality of tube guide pairs extending from the main surface and spaced apart to receive a flexible tube in a direction generally parallel to the first and second longitudinal sides; and a projection extending from the main surface positioned to engage the projection sensing member of the control module.
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8. A pump control module comprising:
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an enclosed housing; a pumping mechanism extending from the housing for pumping fluid through a fluid tube; a mounting mechanism attached to the housing for mounting a base plate to the housing, the base plate including a fluid tube positioned between the base plate and the pumping mechanism, and a projection extending from the base plate toward the control module; two reciprocally mounted plungers extending from the housing; and two optical sensors mounted within the housing for each sensing a portion of one of the two plungers, the plungers being movable between first and second positions. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for pumping fluid comprising the steps of:
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providing a control module having a pumping mechanism; providing a fluid reservoir having a base plate and a fluid tube mounted thereto; providing at least two optical sensors for signalling to the control module that a predetermined fluid reservoir has been interconnected to the control module; providing at least two reciprocally mounted members on the control module; interconnecting the fluid reservoir to the control module wherein the fluid tube is positioned between the base plate and the pumping mechanism; moving with the fluid reservoir at least one of the reciprocally mounted members on the control module; sensing movement of any of the reciprocally mounted members of the control module with the optical sensors; after movement of the reciprocally mounted members has been sensed by the optical sensors, sending a signal to the control module that a predetermined fluid reservoir has been interconnected to the control module; and pumping fluid with the pumping mechanism. - View Dependent Claims (15, 16, 17)
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Specification