Infusion pump having power-saving modes
First Claim
Patent Images
1. An infusion apparatus for infusing liquid into a patient, said infusion apparatus comprising:
- a source of battery power;
a pump powered by said source of battery power and adapted to pump liquid through a conduit, said pump being operable in a plurality of infusion modes including a first infusion mode in which said pump continuously pumps liquid through said conduit and a second infusion mode in which said pump intermittently pumps liquid through said conduit;
a motor coupled to drive said pump;
means for allowing a user to select one of said first and second infusion modes and for causing said pump to operate in said infusion mode selected by the user;
an air-to-line sensor for detecting the presence of an air bubble within said conduit;
an input pressure sensor for detecting the liquid pressure within said conduit at a point upstream of said pump;
an output pressure sensor for detecting the liquid pressure within said conduit at a point downstream of said pump;
a cassette sensor for generating a signal in response to the detection of a cassette;
an ambient light sensor for detecting an ambient light level;
a controller, responsive to said sensors, that performs a plurality of processing tasks including operation of the pump and the motor; and
control means for causing said controller to periodically operate in a power-savings mode of operation and for selectively causing a first of said sensors to be connected to said source of battery power only when said first sensor is to be utilized and for selectively causing a second of said sensors to be connected to said source of battery power only when said second sensor is to be utilized.
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Abstract
An infusion apparatus includes a pump powered by a source of battery power and capable of operating in a plurality of infusion modes and operating in a power savings mode. The infusion apparatus further includes sensors which sense various conditions of the pump. A controller is programmed to periodically operate in a power-savings mode of operation and also selectively causes each sensor to be connected to the battery power only when the sensor is to detect a condition, thus further conserving battery power.
352 Citations
22 Claims
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1. An infusion apparatus for infusing liquid into a patient, said infusion apparatus comprising:
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a source of battery power; a pump powered by said source of battery power and adapted to pump liquid through a conduit, said pump being operable in a plurality of infusion modes including a first infusion mode in which said pump continuously pumps liquid through said conduit and a second infusion mode in which said pump intermittently pumps liquid through said conduit; a motor coupled to drive said pump; means for allowing a user to select one of said first and second infusion modes and for causing said pump to operate in said infusion mode selected by the user; an air-to-line sensor for detecting the presence of an air bubble within said conduit; an input pressure sensor for detecting the liquid pressure within said conduit at a point upstream of said pump; an output pressure sensor for detecting the liquid pressure within said conduit at a point downstream of said pump; a cassette sensor for generating a signal in response to the detection of a cassette; an ambient light sensor for detecting an ambient light level; a controller, responsive to said sensors, that performs a plurality of processing tasks including operation of the pump and the motor; and control means for causing said controller to periodically operate in a power-savings mode of operation and for selectively causing a first of said sensors to be connected to said source of battery power only when said first sensor is to be utilized and for selectively causing a second of said sensors to be connected to said source of battery power only when said second sensor is to be utilized. - View Dependent Claims (2, 3, 4)
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5. An infusion apparatus for infusing liquid into a patient, said infusion apparatus comprising:
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a source of battery power; a pump powered by said source of battery power and adapted to pump liquid through a conduit, said pump being operable in a plurality of infusion modes including a first infusion mode and a second infusion mode, said first infusion mode being different than said second infusion mode; a motor coupled to drive said pump; means for allowing a user to select one of said first and second infusion modes and for causing said pump to operate in said infusion mode selected by the user; a first sensor that senses a first condition relating to the pumping of liquid through said conduit by said pump; a second sensor that senses a second condition relating to the pumping of liquid through said conduit by said pump; a controller, responsive to said sensors, that performs a plurality of processing tasks including operation of the pump and the motor; and control means for causing said controller to periodically operate in a power-savings mode of operation and for selectively causing said first sensor to be connected to said source of battery power only when said first condition is to be sensed and for selectively causing said second sensor to be connected to said source of battery power only when said second condition is to be sensed. - View Dependent Claims (6, 7, 8)
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9. An infusion apparatus for infusing liquid into a patient, said infusion apparatus comprising:
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a source of battery power; a pump powered by said source of battery power and adapted to pump liquid through a conduit, said pump being operable in a plurality of infusion modes including a first infusion mode in which said pump continuously pumps liquid through said conduit and a second infusion mode in which said pump intermittently pumps liquid through said conduit; a motor coupled to drive said pump; an input selector for allowing a user to select one of said first and second infusion modes and for causing said pump to operate in said infusion mode selected by the user; an air-to-line sensor for detecting the presence of an air bubble within said conduit; an input pressure sensor for detecting the liquid pressure within said conduit at a point upstream of said pump; an output pressure sensor for detecting the liquid pressure within said conduit at a point downstream of said pump; a cassette sensor for generating a signal in response to the detection of a cassette; an ambient light sensor for detecting an ambient light level; a controller, responsive to input from said sensors, that performs a plurality of processing tasks including operation of the pump and the motor; and a power-savings mode controller for causing said controller to periodically operate in a power-savings mode of operation and for selectively causing a first of said sensors to be connected to said source of battery power only when said first sensor is to be utilized and for selectively causing a second of said sensors to be connected to said source of battery power only when said second sensor is to be utilized. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An infusion apparatus for infusing liquid into a patient, said infusion apparatus comprising:
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a source of battery power; a pump powered by said source of battery power and adapted to pump liquid through a conduit, said pump being operable in a plurality of infusion modes including a first infusion mode and a second infusion mode, said first infusion mode being different than said second infusion mode; a motor coupled to drive said pump; an input selector for allowing a user to select one of said first and second infusion modes and for causing said pump to operate in said infusion mode selected by the user; a first sensor that senses a first condition relating to the pumping of liquid through said conduit by said pump; a second sensor that senses a second condition relating to the pumping of liquid through said conduit by said pump; a controller that performs a plurality of processing tasks including operation of the pump and the motor; and a power-savings mode controller for causing said controller to periodically operate in a power-savings mode of operation and for selectively causing said first sensor to be connected to said source of battery power only when said first condition is to be sensed and for selectively causing said second sensor to be connected to said source of battery power only when said second condition is to be sensed. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification