Disposable infusion device
First Claim
1. A disposable infusion device, comprising:
- a housing defining a bladder chamber;
a compressible bladder disposed in the bladder chamber, the bladder being compressed by the housing upon filling the bladder with an infusable liquid to create a pressurized bladder; and
a delivery system for subcutaneously delivering the infusable liquid to a body, including a cannula and a plurality of passageways extending between the bladder and the cannula.
3 Assignments
0 Petitions
Accused Products
Abstract
A disposable device is provided which accurately and reliably delivers an infusable liquid to a patient. The infusion device includes a housing which defines a bladder chamber. A compressible bladder is disposed in the bladder chamber and is compressed by the housing upon filling the bladder with an infusable liquid to create a pressurized bladder. The infusion devices further includes a delivery system for subcutaneously delivering the infusable liquid to a body. The delivery system includes a collapsible member that supports an injection needle and a cannula. The injection needle is used to insert the cannula into the skin of the body being treated. The cannula is in communication with the bladder during delivery of the infusable liquid. The housing includes microfluidic passageways that allow communication between fluid in the bladder and the cannula.
942 Citations
38 Claims
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1. A disposable infusion device, comprising:
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a housing defining a bladder chamber;
a compressible bladder disposed in the bladder chamber, the bladder being compressed by the housing upon filling the bladder with an infusable liquid to create a pressurized bladder; and
a delivery system for subcutaneously delivering the infusable liquid to a body, including a cannula and a plurality of passageways extending between the bladder and the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A disposable infusion device for subcutaneously delivering an infusable liquid to a body, comprising:
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a housing defining a bladder chamber;
a bladder disposed in the bladder chamber and being compressed by the housing for expelling the infusable liquid contained therein; and
a cannula insertable into the skin of the body for delivering the infusable liquid to the body;
wherein the housing includes a microfluidic passageways that independently provide fluid communication between the cannula and the bladder. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. An infusion device for delivering an infusable liquid to a body, comprising:
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a housing compressing a bladder to create a pressurized bladder, the bladder being pressurized upon filling he bladder with the infusable liquid;
an injection needle for inserting a cannula into the body, the cannula for subcutaneously delivering the infusable liquid to the body;
microfluidic passageways in the housing that each provide fluid communication between the cannula and the bladder; and
a control system for opening each of the passageways and controlling the amount of infusable liquid delivered to the body. - View Dependent Claims (31)
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32. A method for delivering an infusable liquid to a body with an infusion device, the device having a housing defining a bladder chamber and a bladder disposed therein, the bladder containing the infusable liquid therein, comprising:
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connecting the bladder to a cannula through a plurality of passageways;
compressing the bladder to create a pressurized bladder[, the bladder being compressed by the housing upon filling the bladder with the infusable liquid];
attaching the housing to the body; and
inserting the cannula into the body; and
subcutaneously delivering the infusable liquid to the body by opening at least one of the passageways. - View Dependent Claims (33)
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34. A method of delivering an infusable liquid to a body, comprising:
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compressing a bladder to create a pressurized bladder, the bladder being disposed within a housing of an infusion device, the housing compressing the bladder upon filling the bladder with the infusable liquid;
inserting a cannula into the body, the cannula connected to the bladder through a plurality of passageways and subcutaneously delivering the infusable liquid to the body when in fluid communication with the pressurized bladder;
providing fluid communication between the cannula and the bladder by opening at least one of the passageways during delivery of the infusable liquid; and
controlling the amount of infusable liquid delivered to the body by varying dimensions of the passageways.
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35. An infusion device, comprising:
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a bladder;
a cannula for insertion into a body; and
a plurality of passageways extending between the bladder and the cannula, wherein each passageway includes a switch for opening the passageway and providing fluid communication through the passageway and between the cannula and the bladder. - View Dependent Claims (36, 37, 38)
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Specification