Disposable infusion device with air trapping collapsible reservoir
First Claim
Patent Images
1. A wearable infusion device comprising:
- a base having an adhesive surface for adhering the device to a patient'"'"'s skin;
a reservoir arranged to contain a liquid medicant to be delivered beneath a patient'"'"'s skin, the reservoir formed of flexible sheet material joined along a seal line, having an outlet through which the medicant flows and a shape that forms a plurality pockets that trap air isolated from the outlet, the shape including a plurality of raised regions along the seal line to form the pockets;
a cannula arranged to extend from the base to beneath the patient'"'"'s skin; and
a pump in fluid communication with the reservoir outlet that causes the medicant to flow from the reservoir into the cannula.
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Accused Products
Abstract
A wearable infusion device delivers a liquid medicant to a patient. The infusion device comprises a reservoir arranged to contain a liquid medicant to be delivered beneath a patient'"'"'s skin. The reservoir has an outlet through which the medicant flows and a shape that forms at least one pocket that traps air isolated from the outlet. The infusion device further includes a conduit communicating with the outlet of the reservoir, and a pump that causes the medicant to flow from the reservoir into the conduit.
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Citations
4 Claims
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1. A wearable infusion device comprising:
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a base having an adhesive surface for adhering the device to a patient'"'"'s skin; a reservoir arranged to contain a liquid medicant to be delivered beneath a patient'"'"'s skin, the reservoir formed of flexible sheet material joined along a seal line, having an outlet through which the medicant flows and a shape that forms a plurality pockets that trap air isolated from the outlet, the shape including a plurality of raised regions along the seal line to form the pockets; a cannula arranged to extend from the base to beneath the patient'"'"'s skin; and a pump in fluid communication with the reservoir outlet that causes the medicant to flow from the reservoir into the cannula. - View Dependent Claims (2, 3, 4)
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Specification