Two-chamber carpule

Patent metadata

Field	Value
Publication number	US-11077021-B2
Application number	US-201716076242-A
Country	US
Kind code	B2
Filing date	Feb 9, 2017
Priority date	Feb 9, 2016
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

The disclosure provides a two-chamber carpule comprising two-chambers adapted to be joined together. Each chamber is adapted to contain a medicament component. The carpule further comprises a bevel arranged on a circumference of at least one of the chambers in a transition area. The bevel extends from one chamber to the other chamber.

First claim

The invention claimed is:

1. A two-chamber carpule comprising:
a first chamber and a second chamber adapted to be joined together, each chamber adapted to contain a medicament component, the first and second chambers formed by respective separate first and second components, the separate first and second components being axially joined together, and
a bevel arranged on an inner circumference of at least one of the first and second components in a transition area, extending from the first component to the second component, wherein the transition area provides an edge to block a movement of a plug in a determined direction.

2. The two-chamber carpule according to claim 1 , wherein the edge is formed by a distal end of the first component that comprises an inner diameter less than an inner diameter of the second component in the transition area, due to the bevel.

3. The two-chamber carpule according to claim 2 , wherein at least one section of an inner circumference of the second component is bevelled such that the inner diameter of the second component decreases in a direction away from the first component.

4. The two-chamber carpule according to claim 3 , wherein the inner diameter of the first component is less than or equal to the inner diameter of the second component having the bevel.

5. The two-chamber carpule according to claim 1 , wherein at least one section of an inner circumference of the first component is bevelled such that an inner diameter of the first component decreases in a direction facing the second component.

6. The two-chamber carpule according to claim 1 , wherein the second component is made from a plastic material and the first component is made from a glass material.

7. The two-chamber carpule according to claim 1 , wherein the first and second components are made from a glass material or from a plastic material.

8. The two-chamber carpule according to claim 1 , wherein the first and second components are axially joined together by a bayonet fitting comprising at least one protrusion and a corresponding slot.

9. The two-chamber carpule according to claim 1 , wherein the first and second components are axially joined together by a snap fitting comprising at least one locking arm and a corresponding locking projection.

10. The two-chamber carpule according to claim 1 , wherein the first and second components are axially plugged together.

11. The two-chamber carpule according to claim 10 , wherein the first and second components respectively comprise a rough surface in an interface area of the plugged first and second components.

12. The two-chamber carpule according to claim 10 , wherein a clamp element is arranged between the plugged first and second components.

13. The two-chamber carpule according to claim 1 , wherein a sealing element is arranged between the axially joined components.

14. A method of assembly of the two-chamber carpule according to claim 1 , the method comprising:
joining the first chamber and the second chamber in a force fitting, form fitting, or firmly bonding manner.

15. The method according to claim 14 , comprising:
manufacturing the first component and the second component, wherein the first component forms the first chamber and the second component forms the second chamber,
filling the first component with a medicament component and closing the first component,
axially joining the first and second components, and
filling the second component with a medicament component and closing the second component.

16. The method according to claim 15 , wherein closing the first component comprises:
inserting at least one plug into the chamber.

17. The method according to claim 15 , wherein axially joining the first and second components comprises force fitting the first and second components.

18. The method according to claim 15 , wherein axially joining the first and second components comprises form fitting the first and second components.

19. The method according to claim 15 , wherein axially joining the first and second components comprises firmly bonding the first and second components.

20. A two-chamber carpule comprising:
a first chamber and a second chamber adapted to be joined together, each chamber adapted to contain a medicament component, the first and second chambers formed by respective separate first and second components, the separate first and second components being axially joined together, and
a bevel arranged on an inner circumference of at least one of the first and second components in a transition area, extending from the first component to the second component, wherein the transition area provides an edge to block a movement of a plug in a determined direction,
wherein a length of the bevel is larger than a distance between the edge and the bevel.

Assignees

• Sanofi Aventis Deutschland

Inventors

• KÜHN Bernd
• Möckel Jörn
• Seiferlein Werner

Classifications

• A61J1/065

  Rigid ampoules, e.g. glass ampoules · CPC title

• A61M5/2066

  comprising means for injection of two or more media, e.g. by mixing · CPC title

• A61M5/2448 Primary

  comprising means for injection of two or more media, e.g. by mixing · CPC title

• A61M5/284

  comprising means for injection of two or more media, e.g. by mixing · CPC title

• A61M5/3129

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