Insulin infusion set
AssigneeTandem Diabetes Care, Inc.
InventorsKeith A. Oberg, Mark C. Estes, Kenneth C. Hsu, David S. Gillett
Life of this patent
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Abstract
Embodiments of devices and methods to maintain preservative concentration in a medication delivered using a medical device are provided. A barrier layer can be used to prevent migration of preservatives. A vent can be used to allow release of preservatives prior to delivery to the patient. An absorbent element can be used to maintain preservative concentration at a desired level. A filter can be used to capture particulates from the medication prior to delivery to a patient.
Claims42
An insulin delivery system comprising:
- a reservoir configured to hold an insulin medication therein;
- an infusion hub;
- tubing connecting the insulin reservoir and the infusion hub;
- a cannula configured to deliver the insulin medication to a patient;
- and
- a filter configured to capture particulates from the insulin medication prior to delivery of the insulin to the patient, wherein the filter comprises an internal coil within the cannula.
An insulin delivery system comprising:
- a reservoir configured to hold an insulin medication therein;
- an infusion hub;
- tubing connecting the insulin reservoir and the infusion hub;
- a cannula configured to deliver the insulin medication to a patient;
- and
- a filter configured to capture particulates from the insulin medication prior to delivery of the insulin to the patient,
- wherein the filter comprises features internal to the cannula and in fluidic contact with the insulin configured to affect hydrodynamic flow characteristics of insulin medication flowing within the cannula and to create pressure differential regimes to promote the capture and retention of aggregate particles that have formed out of solution.
A method for delivering insulin, comprising:
- providing a delivery system;
- delivering insulin medication comprising preservatives from a reservoir through tubing connecting the reservoir to an infusion hub;
- filtering the insulin medication to capture particulates from the insulin medication prior to delivery of the insulin medication to the patient;
- and
- delivering the insulin medication to the patient through a cannula connected to the infusion hub,
- wherein filtering the insulin medication comprises using a coil internal to the cannula, the coil configured to create a region of features affecting hydrodynamic flow characteristics of insulin medication flowing within the cannula and creating differential pressure regimes to promote the capture and retention of aggregate particles that have formed out of solution.
A method for delivering insulin, comprising:
- providing a delivery system;
- delivering insulin medication comprising preservatives from a reservoir through tubing connecting the reservoir to an infusion hub;
- filtering the insulin medication to capture particulates from the insulin medication prior to delivery of the insulin medication to the patient;
- and
- delivering the insulin medication to the patient through a cannula connected to the infusion hub,
- wherein filtering the insulin medication comprises providing, within a flow path of the insulin medication, features internal to the cannula, thereby affecting hydrodynamic flow characteristics of insulin medication flowing within the cannula and creating differential pressure regimes to promote the capture and retention of aggregate particles that have formed out of solution.
Dependencies are inferred from the claim text.