US 11,529,461 B1 · Initialization for systems and methods for delivering microdoses of medication

Abstract

Devices, systems, and methods are provided herein for delivering medication (e.g., insulin) via a wearable pump having a patch-style form factor for adhesion to a user's body. The reusable pump may be coupled to a disposable cap housing a microdosing system for delivering precise, repeatable doses of medication to a cannula configured to deliver medication to a target infusion area beneath the user's outer skin layer. The system further may include an applicator for inserting the cannula into the user's skin and/or applying an adhesive pad to the skin.

Claims30

Dependent claims

A component for use in a medication infusion device comprising a patch pump configured to be removably adhered to a wearer's skin for delivering doses of medication from a cartridge through a transcutaneous portion, the component comprising:

a dosing tube configured to receive medication;
a plurality of levers configured to contact the dosing tube to move a predetermined dose of medication towards the transcutaneous portion;
and
a cam configured to move from an initialization position to a dosing position, wherein, in the initialization position, the cam is not coupled to the plurality of levers such that movement of the cam does not cause movement of the plurality of levers and, in the dosing position, the cam is coupled to the plurality of levers such that movement of the cam causes movement of the plurality of levers in a predetermined manner to generate the predetermined dose of medication for delivery to the wearer.

1 more element

A medication infusion device comprising:

a patch pump configured to be removably adhered to a wearer's skin for delivering doses of medication from a cartridge through a transcutaneous portion, the patch pump comprising a pump housing;
a dosing tube configured to be fluidically coupled to the cartridge to receive the medication and to be fluidically coupled to the transcutaneous portion;
a pump motor disposed within the pump housing and configured to pump the medication in the cartridge towards the dosing tube and the transcutaneous portion;
a sensor configured to generate information indicative of pressure within the cartridge;
a plurality of levers configured to contact the dosing tube to move a predetermined dose of medication towards the transcutaneous portion;
a cam configured to move from an initialization position to a dosing position, wherein, in the initialization position, the cam is not coupled to the plurality of levers such that movement of the cam does not cause movement of the plurality of levers and, in the dosing position, the cam is coupled to the plurality of levers such that movement of the cam causes movement of the plurality of levers in a predetermined manner to generate the predetermined dose of medication for delivery to the wearer;
and
a controller operatively coupled to the pump motor and the sensor, the controller configured to:
cause the pump motor, in the initialization position, to activate to increase pressure within the cartridge while the dosing tube is closed such that the medication cannot travel to the transcutaneous portion;
determine that the pressure within the cartridge is above a predetermined threshold based on the information from the sensor;
and
only after the determination, transition the patch pump from the initialization position to the dosing position to permit the dosing tube to open for medication to travel to the transcutaneous portion.

9 more elements

A method for initializing a patch pump in preparation for transcutaneously delivering doses of medication from a cartridge via the patch pump, the method comprising:

adhering the patch pump to a wearer's skin to permit transcutaneous delivery of the doses of medication from a cartridge in the patch pump, the patch pump comprising a dosing tube configured to receive the medication for delivery via a transcutaneous portion, a pump motor disposed within a pump housing and configured to pump the medication in the cartridge towards the dosing tube, the patch pump further comprises a cam and a plurality of levers configured to contact the dosing tube to move a predetermined dose of medication towards the transcutaneous portion;
activating the pump motor, in an initialization position, to increase pressure within the cartridge while the dosing tube is closed such that the medication cannot travel to the transcutaneous portion;
sensing information indicative of pressure within the cartridge using a sensor;
determining that the pressure within the cartridge is above a predetermined threshold based on the information from the sensor;
and
only after determining that the pressure within the cartridge is above the predetermined threshold, transitioning the patch pump from the initialization position to a dosing position to permit the dosing tube to open for medication to travel to the transcutaneous portion,
wherein transitioning the patch pump comprises causing the cam to move from the initialization position to the dosing position, wherein, in the initialization position, the cam is not coupled to the plurality of levers such that movement of the cam does not cause movement of the plurality of levers and, in the dosing position, the cam is coupled to the plurality of levers such that movement of the cam causes movement of the plurality of levers in a predetermined manner to generate the predetermined dose of medication for delivery to the wearer.

4 more elements

Dependencies are inferred from the claim text.

Initialization for systems and methods for delivering microdoses of medication

Life of this patent

Initialization for systems and methods for delivering microdoses of medication

Life of this patent

Abstract

Claims30