DETECTION OF INFUSION PUMP CONDITIONS
First Claim
1. An ambulatory infusion system, comprising:
- an infusion cartridge, the infusion cartridge including a collapsible reservoir for containing a fluid and a substantially rigid shell disposed over the collapsible reservoir and forming an interior volume between an outside surface of the collapsible reservoir and an inside surface of the shell;
a pump device configured to selectively receive the infusion cartridge and cooperate with the infusion cartridge to deliver fluid from the reservoir to the patient;
a pressure sensor located in one of the infusion cartridge and the pump, the pressure sensor in communication with the interior volume of the infusion cartridge; and
a processor located in one of the infusion cartridge and the pump, wherein the processor is programmed with an algorithm to perform the following;
actuating the pressure sensor to take pressure measurements at regular time intervals;
periodically assessing a preselected number of the pressure measurements with statistical analysis to identify statistical measures associated with the pressure measurements; and
using the statistical measures to assess the status of the flexible reservoir and the pump device.
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Accused Products
Abstract
An ambulatory infusion system and a method of operating including a disposable infusion cartridge having a collapsible reservoir and a substantially rigid shell disposed over the collapsible reservoir having an interior volume, a pump device, a pressure sensor in communication with the interior volume and a processor. The method includes actuating the pressure sensor to take pressure measurements at regular time intervals; periodically assessing a preselected number of the pressure measurements with statistical analysis to identify statistical measures associated with the pressure measurements; and using the statistical measures to assess the status of the flexible reservoir and the pump device.
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Citations
18 Claims
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1. An ambulatory infusion system, comprising:
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an infusion cartridge, the infusion cartridge including a collapsible reservoir for containing a fluid and a substantially rigid shell disposed over the collapsible reservoir and forming an interior volume between an outside surface of the collapsible reservoir and an inside surface of the shell; a pump device configured to selectively receive the infusion cartridge and cooperate with the infusion cartridge to deliver fluid from the reservoir to the patient; a pressure sensor located in one of the infusion cartridge and the pump, the pressure sensor in communication with the interior volume of the infusion cartridge; and a processor located in one of the infusion cartridge and the pump, wherein the processor is programmed with an algorithm to perform the following; actuating the pressure sensor to take pressure measurements at regular time intervals; periodically assessing a preselected number of the pressure measurements with statistical analysis to identify statistical measures associated with the pressure measurements; and using the statistical measures to assess the status of the flexible reservoir and the pump device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer implemented method of monitoring an ambulatory infusion device, the ambulatory infusion device comprising:
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an infusion cartridge, the infusion cartridge including a collapsible reservoir for containing a fluid and a substantially rigid shell disposed over the collapsible reservoir and forming an interior volume between an outside surface of the collapsible reservoir and an inside surface of the shell; a pump device configured to selectively receive the infusion cartridge and cooperate with the infusion cartridge to deliver fluid from the reservoir to the patient; a pressure sensor located in one of the infusion cartridge and the pump, the pressure sensor in communication with the interior volume of the infusion cartridge; and a processor located in one of the infusion cartridge and the pump, the method comprising; actuating the pressure sensor to take pressure measurements at regular time intervals; periodically assessing a preselected number of the pressure measurements with statistical analysis to identify statistical measures associated with the pressure measurements; and using the statistical measures to assess the status of the flexible reservoir and the pump device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification