Apparatus and method for infusing fluid through a tube by appropriately heating the tube
First Claim
Patent Images
1. A peristaltic pump, comprising:
- a raceway configured to retain a tube;
a plunger configured to act on the tube disposed within the raceway;
a motor configured to engage the plunger to actuate the plunger;
a heater disposed in thermal-conductive contact with the tube; and
a rocker arm coupled to the plunger, wherein the heater is disposed between the rocker arm and the plunger on a back of the plunger, the back of the plunger being at an opposite side of the plunger away from the raceway.
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Abstract
A peristaltic pump disclosed herein includes a raceway, a plunger, a motor, and a heater. The raceway is configured to retain a tube (e.g., an IV tube). The plunger acts on the tube disposed within the raceway. The motor engages the plunger to actuate the plunger. The heater is disposed in thermal-conductive contact with the tube. That is, the heater, either through direct or indirect application, heats the tube.
394 Citations
41 Claims
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1. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; and a rocker arm coupled to the plunger, wherein the heater is disposed between the rocker arm and the plunger on a back of the plunger, the back of the plunger being at an opposite side of the plunger away from the raceway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; a heater controller configured to control heating of the heater; and a temperature sensor configured to sense heat generated by the heater, wherein the heater controller is configured to control the heater to achieve a target temperature when the peristaltic pump cannot achieve a target flow rate without activating the heater.
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26. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; and a display configured to display a message to plug a power cord coupled to the peristaltic pump into a power source when the heater is activated.
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27. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; a plurality of heaters including the heater, wherein each of the plurality of heaters is in thermal-conductive contact with the tube, wherein the heater of the plurality of heaters is disposed on the plunger of the peristaltic pump; another heater of the plurality of heaters is disposed on the plunger, and the another heater is not disposed on the plunger. - View Dependent Claims (28, 29)
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30. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; a controller operatively coupled to the heater, wherein the controller operatively sends a plurality of current pulses to the heater to heat the heater; and an amplifier to amplify the plurality of current pulses prior to being sent to the heater.
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31. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; and a controller configured to heat the heater to a predetermined temperature, wherein the predetermined temperature is selected to achieve a predetermined maximum flow error rate of the controller when controlling actuation of the plunger to move fluid through the tube. - View Dependent Claims (32)
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33. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; a heater disposed in thermal-conductive contact with the tube; and a controller configured to heat the heater to a predetermined temperature, wherein the predetermined temperature is selected in accordance with a plurality of tube types, and wherein each tube type of the plurality of tube types affects an error flow rate depending upon the predetermined temperature. - View Dependent Claims (34, 35, 36)
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37. A peristaltic pump, comprising:
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a raceway configured to retain a tube; a plunger configured to act on the tube disposed within the raceway; a motor configured to engage the plunger to actuate the plunger; and a heater disposed in thermal-conductive contact with the tube, wherein the plunger is a spring-biased plunger configured to use a spring to urge a volume of fluid to be discharged by the plunger, wherein a delta movement of the plunger from a full fill volume to a full discharge volume is correlated to an estimated fluid discharge volume, and wherein the correlation is determined using a linear equation having at least one parameter. - View Dependent Claims (38, 39, 40, 41)
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Specification