Medicament delivery device

Patent metadata

Field	Value
Publication number	US-12337144-B2
Application number	US-202418638166-A
Country	US
Kind code	B2
Filing date	Apr 17, 2024
Priority date	Jul 14, 2016
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

A medicament delivery device includes a device housing for placing on skin of a patient, the device housing including a needle aperture; a needle for injecting 5 a medicament, the needle arranged to pass through the needle aperture; and sensors configured to provide a signal when the device housing is placed on the skin of the patient. The sensors are arranged around the needle aperture.

First claim

The invention claimed is:

1. A method of delivering a medicament from a large volume device, the method comprising:
sensing, using a plurality of sensors of the large volume device, when the large volume device is placed on and attached to skin of a patient, wherein the plurality of sensors is arranged around a needle aperture of the large volume device, and wherein the large volume device is configured to deliver a volume of the medicament of at least two milliliters through a needle of the large volume device during a medicament administration process;
providing a signal when the large volume device is placed on the skin of the patient; and
conditional on the signal, unlocking a retractable needle shield disposed around the needle aperture to move the retractable needle shield from a first position, in which the retractable needle shield is retracted within a housing of the large volume device prior to the housing being placed on the skin of the patient, to a second position, in which the retractable needle shield surrounds the needle of the large volume device.

2. The method of claim 1 , further comprising:
activating a plunger driver for the delivering of the medicament through the needle, conditional on the signal.

3. The method of claim 1 , further comprising:
moving the needle through the needle aperture, from an initial position where the needle is disposed within the housing, to an engaged position where the needle extends from the housing.

4. The method of claim 3 , further comprising:
sensing, using the plurality of sensors, when the needle is in the engaged position; and
providing a further signal when the needle is in the engaged position.

5. The method of claim 3 , wherein a portion of the needle is configured to engage with the plurality of sensors when the needle is in the engaged position, and wherein the method further comprises:
sensing that the portion of the needle is engaged with the plurality of sensors using the plurality of sensors when the needle is in the engaged position.

6. The method of claim 5 , wherein the plurality of sensors is configured to differentiate between (i) the plurality of sensors being in contact with the skin and (ii) the plurality of sensors being in contact with the portion of the needle.

7. The method of claim 1 , further comprising:
delivering the medicament over at least a 10-minute period from the large volume device during the medicament administration process.

8. The method of claim 1 , further comprising:
delivering the medicament from the large volume device while the large volume device is attached to the skin of the patient for at least a 5-minute time period.

9. The method of claim 1 , wherein the sensing comprises:
sensing when a lower side of the housing of the large volume device is placed against the skin of the patient during the medicament administration process, wherein a width of the lower side of the housing is greater than a height of the large volume device.

10. The method of claim 1 , wherein the large volume device is disc-shaped.

11. The method of claim 1 , wherein the providing of the signal comprises providing the signal by an output transducer of the large volume device.

12. The method of claim 1 , wherein the plurality of sensors is disposed on the retractable needle shield.

13. The method of claim 1 , wherein the large volume device comprises a medicament reservoir and the medicament retained in the medicament reservoir.

14. The method of claim 1 , further comprising:
responsive to the signal, providing an audio output for indicating that the large volume device is attached to the skin of the patient.

15. The method of claim 1 , further comprising:
responsive to the signal, providing a visual output for indicating that the large volume device is attached to the skin of the patient.

16. The method of claim 1 , wherein the unlocking of the retractable needle shield is conditional on the signal indicating that at least a threshold number of sensors of the plurality of sensors are in contact with the skin, the threshold number being greater than one.

17. The method of claim 1 , further comprising activating the large volume device in response to determining that a liner of the large volume device has been removed.

18. The method of claim 17 , wherein the activating of the large volume device comprises activating a user interface of the large volume device.

19. The method of claim 17 , wherein the activating of the large volume device comprises activating a heating mechanism of the large volume device.

Assignees

• Sanofi Sa

Inventors

• Schabbach Michael
• Franke Beate
• Pradel Giuliano
• Nelson Andrew

Classifications

• A61M5/3243

  being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel (devices for protecting guide needles in combination with catheters A61M25/0612) · CPC title

• A61M2205/13

  with means for the detection of operative contact with patient, e.g. lip sensor · CPC title

• A61M2005/208

  Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin · CPC title

• A61M2005/206

  With automatic needle insertion · CPC title

• A61M5/326

  Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user · CPC title