Infusion pump system with disposable cartridge having pressure venting and pressure feedback
First Claim
Patent Images
1. A portable infusion pump system, comprising:
- (a) a pump device configured to accept a disposable fluid cartridge and including a housing, a drive mechanism with a motor, and a controller operatively coupled to the drive mechanism;
(b) a disposable fluid cartridge configured to be operatively coupled to the housing, the cartridge including;
(i) a collapsible reservoir having an interior volume surrounded by a flexible fluid tight membrane, the interior volume being in fluid communication with a reservoir inlet port,(ii) a substantially rigid shell disposed over the collapsible reservoir and forming a second interior volume between an outside surface of the collapsible reservoir and an inside surface of the substantially rigid shell with a vent inlet port in communication with the second interior volume, and(iii) a delivery mechanism including a bore within a pump body of the delivery mechanism, a spool slidingly disposed in the bore forming a collapsible first volume which is configured to communicate with the reservoir inlet port and a dispense port of the bore independent of reservoir inlet port; and
(c) a pressure sensor in communication with the second interior volume between the inside surface of the rigid shell and the outside surface of the collapsible reservoir.
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Abstract
Embodiments are directed to portable infusion devices, systems, and methods of using the same for dispensing materials. In some cases, the devices, systems and methods may be used for infusing a material such as medicament, e.g., insulin, into a body in need thereof.
3109 Citations
11 Claims
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1. A portable infusion pump system, comprising:
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(a) a pump device configured to accept a disposable fluid cartridge and including a housing, a drive mechanism with a motor, and a controller operatively coupled to the drive mechanism; (b) a disposable fluid cartridge configured to be operatively coupled to the housing, the cartridge including; (i) a collapsible reservoir having an interior volume surrounded by a flexible fluid tight membrane, the interior volume being in fluid communication with a reservoir inlet port, (ii) a substantially rigid shell disposed over the collapsible reservoir and forming a second interior volume between an outside surface of the collapsible reservoir and an inside surface of the substantially rigid shell with a vent inlet port in communication with the second interior volume, and (iii) a delivery mechanism including a bore within a pump body of the delivery mechanism, a spool slidingly disposed in the bore forming a collapsible first volume which is configured to communicate with the reservoir inlet port and a dispense port of the bore independent of reservoir inlet port; and (c) a pressure sensor in communication with the second interior volume between the inside surface of the rigid shell and the outside surface of the collapsible reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification