Cartridge holder and alignment interface

Patent metadata

Field	Value
Publication number	US-9381304-B2
Application number	US-201113641801-A
Country	US
Kind code	B2
Filing date	Apr 21, 2011
Priority date	Apr 23, 2010
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

A system for a drug delivery device comprising a reservoir holder configured to hold a reservoir, and an alignment interface comprising a main body configured to be coupled to the reservoir. A first alignment feature is provided on the main body. The first alignment feature cooperates with a corresponding alignment feature provided by the reservoir holder such that when the reservoir is inserted into the holder, the first alignment feature cooperates with the corresponding alignment feature provided by the holder so as to rotate the alignment interface and thereby align the alignment interface within the holder. Thus, the reservoir may be aligned within the reservoir holder. The first alignment feature may comprise at least one protrusion provided on the main body of the interface. The system further comprises one or more coding features.

First claim

We claim:

1. A system for a drug delivery device comprising:
a reservoir holder configured to hold a reservoir, where the reservoir holder comprises a bore having an inner wall comprising a ramp profile which comprises a single ramp terminating in an end alignment position, wherein the length of the ramp profile is equal to the circumference of the reservoir holder;
an alignment interface comprising a main body configured to be coupled to the reservoir and a first alignment feature provided on the main body configured to engage the ramp as the reservoir is inserted into the bore of the reservoir holder; and
one or more coding features,
wherein, when the alignment interface is inserted into the reservoir holder, the engagement of the first alignment feature with the ramp of the reservoir holder causes the alignment interface to rotate and thereby align and engage the first alignment feature with the end alignment position.

2. The system of claim 1 , wherein the first alignment feature comprises at least one protrusion or at least one groove provided on the main body of the alignment interface.

3. The system according to claim 1 , wherein the main body comprises a bore, the bore defining a diameter configured to receive the reservoir.

4. The system according to claim 1 , further comprising the reservoir, wherein the main body is mounted on the reservoir, and wherein the reservoir comprises a neck part that is pressed into an aperture of the alignment interface.

5. The system according to claim 1 , wherein the alignment interface comprises a thread configured for receiving a threaded needle hub.

6. The system according to claim 1 , wherein the alignment feature is configured to prevent relative rotation between the reservoir holder and the alignment interface when the reservoir is within the reservoir holder.

7. The system according to claim 1 , wherein the first alignment feature comprises a coding feature.

8. The system according to claim 1 , wherein the first alignment feature comprises a first protrusion provided on the main body of the alignment interface.

9. The system according to claim 8 , wherein the first alignment feature comprises a second protrusion provided on the main body, and wherein a radius of the second protrusion is greater than a radius of the first protrusion.

10. The system according to claim 1 , wherein the first alignment feature is provided on a sidewall of the main body, on a distal end face of the main body, and/or on a flange of the main body.

11. The system according to claim 1 , wherein a geometry of the alignment interface is designed to carry information about the contents of the reservoir.

12. A drug delivery system comprising:
a drug delivery device comprising a dose setting mechanism and the system according to claim 1 ,
wherein the reservoir holder is secured to the dose setting mechanism and wherein the reservoir is contained within the reservoir holder.

13. The drug delivery system according to claim 12 , wherein the first alignment feature of the alignment interface mechanically cooperates with the corresponding alignment feature provided by the reservoir holder so as to align the reservoir in the reservoir holder.

14. The drug delivery system of claim 12 , wherein the reservoir holder is removably secured to the dose setting mechanism and wherein the reservoir is removably contained within the reservoir holder.

15. The drug delivery system according to claim 12 , wherein the drug delivery device comprises a reusable drug delivery device.

16. The drug delivery system according to claim 12 , wherein the dose setting mechanism comprises a rotating piston rod for expelling a set dose from the reservoir.

17. A system for a drug delivery device comprising:
a reservoir holder configured to hold a reservoir, where the reservoir holder comprises a bore having an inner wall comprising a ramp profile which comprises exactly two ramps terminating in end alignment positions wherein the length of the ramp profile is equal to the circumference of the reservoir holder,
an alignment interface comprising a main body configured to be coupled to the reservoir and a first alignment feature provided on the main body configured to engage the ramp or protrusion as the reservoir is inserted into the bore of the reservoir holder; and
one or more coding features, wherein, when the alignment interface is inserted into the reservoir holder, the engagement of the first alignment feature with the ramp of the reservoir holder causes the alignment interface to rotate and thereby align and engage the first alignment feature with the end alignment position.

Assignees

• Avery Richard James Vincent
• James Aled Meredydd
• Sanofi Aventis Deutschland

Inventors

• Avery Richard James Vincent
• James Aled Meredydd

Classifications

• A61M5/3129 Primary

  Syringe barrels (A61M5/3205 and A61M5/50 take precedence) · CPC title

• A61M5/3158

  performed by axially moving actuator operated by user, e.g. an injection button · CPC title

• A61M2005/2407

  from the rear · CPC title

• A61M5/347

  rotatable, e.g. bayonet or screw (A61M5/344 takes precedence) · CPC title

• A61M2205/6036

  characterised by physical shape, e.g. array of activating switches · CPC title