Ambulatory infusion devices and associated methods
AssigneeMedallion Therapeutics, Inc.
InventorsChristian M. Merot, Pedrum Minaie
Life of this patent
Estimating the term…
Abstract
A method of operating an infusion device that includes the steps of actuating a fluid transfer device, which is configured to deliver a predetermined volume during each actuation, in accordance with a delivery profile that includes a plurality of fluid transfer device actuations, determining, based on sensed pressure, whether an actual volume delivered during a fluid transfer device actuation is the predetermined volume, and adjusting the number of actuations in the delivery profile in response to the actual volume delivered differing from the predetermined volume.
Claims17
A method of operating an infusion device, comprising the steps of:
- actuating a fluid transfer device, which is configured to deliver a predetermined volume during each actuation, in accordance with a delivery profile that includes a plurality of fluid transfer device actuations;
- determining whether an actual volume delivered during a fluid transfer device actuation is the predetermined volume by sensing pressure, at a single location with a single pressure sensor that is located upstream of a flow restrictor and that has a compliant diaphragm, a compliance value and a sensor apparatus located in spaced relation to the compliant diaphragm, and determining the magnitude of the of a pressure spike associated with the fluid transfer device actuation and multiplying the magnitude of the pressure spike by the compliance value;
- and
- adjusting the number of actuations in the delivery profile in response to the actual volume delivered differing from the predetermined volume.
An ambulatory infusion device, comprising:
- an outlet port;
- a fluid transfer device configured to deliver a predetermined volume during each actuation thereof;
- a fluid path that operably connects the fluid transfer device to the outlet port;
- a pressure sensor associated with the fluid path;
- a flow restrictor between the pressure sensor and the outlet port;
- and
- means for actuating the fluid transfer device in accordance with a delivery profile that includes a plurality of fluid transfer device actuations, determining based on pressure sensed only upstream of the flow restrictor whether an actual volume delivered during a fluid transfer device actuation is the predetermined volume, and adjusting the number of actuations in the delivery profile in response to the actual volume delivered differing from the predetermined volume.
Dependencies are inferred from the claim text.