Pump set and pump with electromagnetic radiation operated interlock
First Claim
1. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
- an emitter for emitting electromagnetic radiation having a predetermined wavelength;
a detector for receiving electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength emitted by the emitter and providing a detector signal representative of The received electromagnetic radiation;
a filter for faltering the detector signal provided by the detector to exclude a portion of the detector signal representative of electromagnetic radiation having a wavelength other than the predetermined wavelength, said filter providing an output signal representative of the electromagnetic radiation having the predetermined wavelength received by the detector;
a controller for determining whether a compatible pump set is properly loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal; and
a second emitter for emitting electromagnetic radiation having a second predetermined wavelength;
a second detector for receiving electromagnetic radiation including the electromagnetic radiation having the second predetermined wavelength emitted by the second emitter and providing a second detector signal representative of the intensity of the received electromagnetic radiation; and
wherein the controller determines whether a compatible pump set is properly loaded in the pump as a function of the output signal and the second detector signal.
3 Assignments
0 Petitions
Accused Products
Abstract
A medical pump including an electromagnetic emitter and detector is provided. The emitter emits electromagnetic radiation of a predetermined wavelength. A pump set that is compatible with the medical pump modifies the emitted electromagnetic radiation when properly installed in the pump. The detector receives electromagnetic radiation, and a filter excludes electromagnetic radiation having a wavelength other than the predetermined wavelength. The pump monitors the filtered signal to determine whether the received electromagnetic radiation corresponds to the emitted electromagnetic radiation as modified by a properly loaded, compatible pump set and determines whether a compatible pump set is properly loaded in the pump as a function thereof.
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Citations
22 Claims
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1. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
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an emitter for emitting electromagnetic radiation having a predetermined wavelength; a detector for receiving electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength emitted by the emitter and providing a detector signal representative of The received electromagnetic radiation; a filter for faltering the detector signal provided by the detector to exclude a portion of the detector signal representative of electromagnetic radiation having a wavelength other than the predetermined wavelength, said filter providing an output signal representative of the electromagnetic radiation having the predetermined wavelength received by the detector; a controller for determining whether a compatible pump set is properly loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal; and a second emitter for emitting electromagnetic radiation having a second predetermined wavelength; a second detector for receiving electromagnetic radiation including the electromagnetic radiation having the second predetermined wavelength emitted by the second emitter and providing a second detector signal representative of the intensity of the received electromagnetic radiation; and wherein the controller determines whether a compatible pump set is properly loaded in the pump as a function of the output signal and the second detector signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical pump for pumping fluid through a pump set loaded therein, said pump set being adapted for modifying electromagnetic radiation transmitted therethrough when properly loaded in the medical pump, said medical pump comprising:
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an emitter for emitting electromagnetic radiation having a predetermined wavelength; a detector for receiving electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength emitted by the emitter and providing a detector signal representative of the received electromagnetic radiation; a filter for filtering the detector signal provided by the detector to exclude a portion of the detector signal representative of electromagnetic radiation having a wavelength other than the predetermined wavelength, said filter providing an output signal representative of the electromagnetic radiation having the predetermined wavelength received by the detector; a controller for determining whether a compatible pump set is property loaded in the pump as a function of the output signal, said controller being configured to enable the pump for pumping when the compatible pump set is properly loaded in the pump as indicated by the output signal; and
wherein the controller further comprises;an amplifier for amplifying the output signal; and an offset circuit for referencing the amplified output signal to about half of a voltage of a power supply of the medical pump. - View Dependent Claims (9, 10)
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11. A method of determining whether a compatible pump set is properly loaded in a medical pump, said pump set modifying electromagnetic radiation transmitted therethrough when properly loaded in the pump, said method comprising:
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emitting, by an emitter of the pump, electromagnetic radiation through a portion of a pump set loaded in the pump, said electromagnetic radiation having a predetermined wavelength and being pulsed at a predetermined frequency; receiving electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength at a detector of the pump and providing a detector signal representative of the received electromagnetic radiation; filtering the provided detector signal to exclude frequencies other than the predetermined frequency, said filter providing an output signal representative of the intensity of the electromagnetic radiation pulsed at the predetermined frequency received by the detector; comparing the output signal to a threshold to determine whether the emitted electromagnetic radiation transmitted through the pump set has been modified; generating a detection signal representative of the comparison; determining whether the pump set is compatible with the pump and properly loaded in the pump as a function of the detection signal; and emitting, by a second emitter of the pump, second electromagnetic radiation through a portion of a pump set loaded in the pump, said second electromagnetic radiation having a second predetermined wavelength; receiving electromagnetic radiation including the second electromagnetic radiation having the second predetermined wavelength at a second detector of the pump and providing a second detector signal representative of the received electromagnetic radiation; comparing the second detector signal to a second threshold to determine whether the emitted second electromagnetic radiation transmitted through the pump set has been modified; and generating a second detection signal representative of the comparison of the second detector signal to the second threshold; and wherein determining whether the pump set is compatible with the pump and properly loaded in the pump is a function of the detection signal and the second detection signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of determining whether a compatible pump set is properly loaded in a medical pump, said puma set modifying electromagnetic radiation transmitted therethrough when properly loaded in the pump, said method comprising:
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emitting, by an emitter of the pump, electromagnetic radiation through a portion of a pump set loaded in the pump, said electromagnetic radiation having a predetermined wavelength and being pulsed at a predetermined frequency; receiving electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength at a detector of the pump and providing a detector signal representative &
the received electromagnetic radiation;filtering the provided detector signal to exclude frequencies other than the predetermined frequency, said filter providing an output signal representative of the intensity of the electromagnetic radiation pulsed at the predetermined frequency received by the detector; comparing the output signal to a threshold to determine whether the emitted electromagnetic radiation transmitted through the pump set has been modified; generating a detection signal representative of the comparison; determining whether the pump set is compatible with the pump and properly loaded in the pump as a function of the detection signal amplifying the output signal; referencing the amplified output signal to about half of a voltage of a power supply of the pump; and wherein;
the threshold is about ⅔
of the voltage of the power supply of the pump; and
filtering comprises filtering with a bandpass filter. - View Dependent Claims (20)
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21. A method of detecting electromagnetic radiation having a predetermined wavelength pulsed at a predetermined frequency in the presence of ambient light, said ambient light comprising electromagnetic radiation having a plurality of wavelengths, said method being for use with a medical pump, said pump including an emitter for emitting electromagnetic radiation having substantially the predetermined wavelength and a detector for receiving electromagnetic radiation, said method comprising:
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receiving electromagnetic radiation at the detector of the pump, said received electromagnetic radiation including the electromagnetic radiation having the predetermined wavelength emitted by the emitter of the pump at the predetermined frequency and providing a detector signal representative of the received electromagnetic radiation; filtering the provided detector signal to exclude a portion of the detector signal representative of electromagnetic radiation having a frequency other than the predetermined frequency and providing an output signal representative of the electromagnetic radiation having the predetermined frequency received by the detector; comparing the provided output signal to a threshold; generating a detection signal when the output signal exceeds the threshold; determining as a function of the detection signal, that the emitted electromagnetic radiation is being received at the detector amplifying the output signal; referencing the amplified output signal to about ½
of a voltage of a power supply of the medical pump; andwherein the threshold is equal to about ⅔
of the voltage of the power supply of the medical pump;the predetermined wavelength is one of about 510 nanometers or about 880 nanometers; and filtering comprises filtering with a bandpass filter. - View Dependent Claims (22)
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Specification