Providing temperature-based feedback regarding delivery of a medicament

1. A device configured to deliver a medicament to a user by injection, the device comprising an injection feedback apparatus configured to apply temperature-based feedback to the user regarding the delivery of the medicament, wherein the feedback apparatus is configured to provide the temperature-based feedback in response to a trigger event associated with the delivery of the medicament and wherein the trigger event is the completion of an injection of medicament from the device.

2. The device according to claim 1 , wherein the feedback apparatus is configured to apply the temperature-based feedback to skin tissue of the user by causing thermal energy to be applied to, or removed from, the skin tissue of the user.

3. The device according to claim 1 , wherein the feedback apparatus is configured to heat or cool skin tissue by changing a temperature of a patient interface element.

4. The device according to claim 3 , wherein the feedback apparatus is configured to change the temperature of the patient interface element by a predetermined amount.

5. The device according to claim 3 , wherein the feedback apparatus is configured to vary the temperature of the patient interface element over a predetermined time period.

6. The device according to claim 1 , wherein the feedback apparatus is configured to apply different temperatures to skin tissue of the user in response to different trigger events.

7. The device according to claim 1 , wherein the feedback apparatus comprises a Peltier element configured to control the temperature of a localized region of skin tissue of the user to provide the temperature-based feedback.

8. The device according to claim 1 , wherein the feedback apparatus comprises an electrically resistive heating element or infra-red heating element to cause heating of skin tissue of the user.

9. The device according to claim 1 , wherein the feedback apparatus is configured to initiate an endothermic or exothermic chemical reaction to cause cooling or heating of skin tissue of the user.

10. The device according to claim 1 , wherein the device comprises a contact region to be worn against skin of the user and wherein the feedback apparatus is arranged to apply the temperature-based feedback to skin tissue of the user beneath the contact region.

11. The device according to claim 1 , wherein the device is configured to apply the feedback automatically in response to a patient-initiated trigger to deliver the medicament.

12. The device according to claim 1 , wherein the feedback apparatus is configured to initiate a compression or expansion of gas to cause cooling or heating of skin tissue of the user.

13. The device according to claim 1 , comprising a timing element to trigger application of the temperature-based feedback to the user.

14. The device according to claim 1 , wherein the feedback apparatus is configured to apply the temperature-based feedback by allowing skin tissue of the user to cool naturally following a period of heating by the feedback apparatus.

15. The device according to claim 1 , wherein the device is wearable.

16. The device according to claim 1 , wherein the device is a bolus injector device.

17. A system comprising:

a device configured to deliver a medicament to a user by injection, the device comprising an injection feedback apparatus configured to apply temperature-based feedback to the user regarding the delivery of the medicament, wherein the feedback apparatus is configured to provide the temperature-based feedback in response to a trigger event associated with the delivery of the medicament and wherein the trigger event is the completion of an injection of medicament from the device; and

a reservoir of the medicament to be delivered into the user by injection.

18. A method of providing feedback to a user of a device configured to deliver a medicament to the user by injection, the method comprising:

detecting that a medicament injection process has been completed by the device; and

in response to determining that the medicament injection process has been completed, applying temperature-based feedback to the user.