Medication safety enhancement for secondary infusion
First Claim
1. A system for determining a fault condition in an infusion system including an infusion pump capable of infusing fluid from a primary container connected to a primary infusion line and a secondary container connected to the primary infusion line through a secondary infusion line, the secondary infusion line having a valve to control flow of the secondary fluid in the secondary fluid line, the primary infusion line having a check valve disposed between the primary container and the connection of the secondary infusion line to the primary infusion line, the check valve for prevent flow backwards from the primary infusion line into the primary container, comprising:
- a pressure sensor disposed adjacent the primary infusion line below the connection of the secondary infusion line to the primary infusion line, the pressure sensor in operative arrangement with the primary infusion line to measure pressure within the primary infusion line, the pressure sensor providing signals representative of the pressure within the primary infusion line;
a memory for storing pressure related values;
a processor in communication with the memory and responsive to the signals provided by the pressure sensor, the processor programmed to sample the pressure signals, establish a baseline pressure value, store the baseline pressure value in the memory, compare the baseline pressure value with pressure values sampled at a latter time, and if the latter sampled pressure value equals or is greater than a selected threshold pressure value, provide an alert that a fault condition exists.
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0 Petitions
Accused Products
Abstract
A system and method determine when fluid is not flowing properly from a secondary infusion source during a secondary infusion. The system includes an upstream pressure sensor and a processor programmed to receive signals from the sensor and analyze the signals to determine if secondary fluid flow is proper. The processor samples the output signals from the upstream pressure sensor and analyzes the sampled signals to determine if a pressure rise in the infusion line has occurred when the secondary infusion is initiated. If a pressure rise, indicating that fluid from the secondary container has begun flowing into the infusion line, has not been detected, the processor is programmed to provide a signal indicating that attention should be given to the infusion set up.
165 Citations
19 Claims
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1. A system for determining a fault condition in an infusion system including an infusion pump capable of infusing fluid from a primary container connected to a primary infusion line and a secondary container connected to the primary infusion line through a secondary infusion line, the secondary infusion line having a valve to control flow of the secondary fluid in the secondary fluid line, the primary infusion line having a check valve disposed between the primary container and the connection of the secondary infusion line to the primary infusion line, the check valve for prevent flow backwards from the primary infusion line into the primary container, comprising:
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a pressure sensor disposed adjacent the primary infusion line below the connection of the secondary infusion line to the primary infusion line, the pressure sensor in operative arrangement with the primary infusion line to measure pressure within the primary infusion line, the pressure sensor providing signals representative of the pressure within the primary infusion line;
a memory for storing pressure related values;
a processor in communication with the memory and responsive to the signals provided by the pressure sensor, the processor programmed to sample the pressure signals, establish a baseline pressure value, store the baseline pressure value in the memory, compare the baseline pressure value with pressure values sampled at a latter time, and if the latter sampled pressure value equals or is greater than a selected threshold pressure value, provide an alert that a fault condition exists. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for determining a fault condition in an infusion system including an infusion pump capable of infusing fluid from a primary container connected to a primary infusion line and a secondary container connected to the primary infusion line through a secondary infusion line, the secondary infusion line having a valve to control flow of the secondary fluid in the secondary fluid line, the primary infusion line having a check valve disposed between the primary container and the connection of the secondary infusion line to the primary infusion line, the check valve for prevent flow backwards from the primary infusion line into the primary container, comprising:
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a pressure sensor disposed adjacent the primary infusion line below the connection of the secondary infusion line to the primary infusion line, the pressure sensor in operative arrangement with the primary infusion line to measure pressure within the primary infusion line, the pressure sensor providing signals representative of the pressure within the primary infusion line;
a memory for storing pressure related values;
a processor in communication with the memory and responsive to the signals provided by the pressure sensor, the processor programmed to sample the pressure signals, establish a baseline pressure value, store the baseline pressure value in the memory, operate the infusion pump to increase the pressure in the primary infusion line, sample the pressure signals after operating the pump to increase the pressure in the primary infusion line, compare the baseline pressure value with pressure values sampled after operating the pump to increase the pressure in the primary infusion line, and if the latter sampled pressure value equals or is greater than a selected threshold pressure value, provide an alert that a fault condition exists. - View Dependent Claims (9, 10, 11)
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12. A method of determining whether a valve in a secondary infusion line is open during a secondary infusion;
- comprising;
sampling pressure signals provided by a pressure sensor in operable communication with an upstream infusion line;
establishing a baseline pressure from the sampled pressure signals;
storing the baseline pressure in a memory;
sampling further pressure signals after establishing the baseline pressure;
comparing the further sampled pressure to the baseline pressure;
providing an alert if a further sampled pressure value is equal to or greater than a threshold pressure. - View Dependent Claims (13, 14, 15)
- comprising;
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16. A method for determining the status of a secondary infusion;
- comprising;
sampling pressure signals provided by a pressure sensor in operable communication with an upstream infusion line;
establishing a baseline pressure from the sampled pressure signals;
storing the baseline pressure in a memory;
causing an increase in the pressure within the upstream infusion line;
sampling the pressure signals after the pressure in the primary infusion line is increased;
comparing a characteristic of the pressure signals sampled after the pressure in the primary infusion line is increased with a characteristic of the threshold pressure; and
providing an alert if the characteristic of the pressure signals is greater than or equal to the characteristic of the threshold pressure. - View Dependent Claims (17, 18, 19)
- comprising;
Specification