Skin-patch type large volume bolus drug injector with medicament pre-heating
AssigneeSanofi
InventorChristian Nessel
Life of this patent
Estimating the term…
Abstract
A skin-patch type large volume drug delivery device (1) comprising a heat exchanger (24) to extract thermal energy from the body/skin surface of the user and to supply the extracted thermal energy to increase the temperature of the medicament. Alternatively or in addition, a Peltier element (35) can be used for the same purpose. The device includes a temperature sensor (31) and a controller (16) for varying the flow rate within the heat exchanger as a function of the drug temperature.
Claims18
A device configured to deliver a medicament to a user by injection, comprising:
- a reservoir configured to hold the medicament;
- an injection element configured to inject the medicament from the device into a patient;
- and
- a heat exchanger configured to extract thermal energy from a body tissue of the user through a contact surface of the heat exchanger when the contact surface is in contact with a portion of skin of the user and to supply the extracted thermal energy to increase a temperature of the medicament,
- wherein the heat exchanger comprises a medicament flow path formed of thermally conductive material forming, at least part of, the contact surface that in use is supported against a portion of skin of the user, and
- wherein the medicament flow path comprises a winding path.
A system comprising:
- a device configured to deliver a medicament to a user by injection, comprising:
- an injection element configured to inject the medicament from the device into a patient;
- a heat exchanger configured to extract thermal energy from a body tissue of the user through a contact surface of the heat exchanger when the contact surface is in contact with a portion of skin of the user and to supply the extracted thermal energy to increase a temperature of the medicament;
- and
- a reservoir of medicament to be delivered into the user by injection,
- wherein the heat exchanger comprises a medicament flow path formed of thermally conductive material forming, at least part of, the contact surface that in use is supported against a portion of skin of the user, and
- wherein the medicament flow path comprises a winding path.
A method of increasing a temperature of a medicament in a device configured to deliver the medicament to a user by injection, comprising:
- extracting thermal energy from a body tissue of the user using through a contact surface of a heat exchanger when the contact surface is in contact with a portion of skin of the user, the heat exchanger comprising a medicament flow path formed of thermally conductive material forming, at least part of, the contact surface, wherein the medicament flow path comprises a winding path;
- and
- supplying the extracted thermal energy to increase the temperature of the medicament.
Dependencies are inferred from the claim text.