Medical delivery system comprising a container and a dosing assembly with radially moving fastening means

• US 20100324498A1
• Filed: 12/15/2007
• Published: 12/23/2010
• Est. Priority Date: 12/15/2006
• Status: Active Grant

• Current Assignee: Novo Nordisk A/S
• Original Assignee: Novo Nordisk A/S
• Inventors: Christiansen, Asger Voss
• Granted Patent: US 8,617,125 B2
• Time in Patent Office: Days
• US Class Current: 604/211
• CPC Class Codes: A61M 2005/2488 via rotation, e.g. threads or bayonet
• CPC Class Codes: A61M 2205/276 preventing unwanted use
• CPC Class Codes: A61M 2205/60 with identification means
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take precedence
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile

Abstract

A medical delivery system wherein one of a container and a dosing assembly comprises a first fastening means (116) and the other one of the container and the dosing assembly comprises a second fastening means (114); and wherein the second fastening means is adapted to move at least a part of the first fastening means in a radial direction upon rotation of the container in a first rotational direction relative to the dosing assembly, whereby the first and second fastening means engage such that the container and the dosing assembly are locked for relative translational movement. A container and a dosing assembly for use in the medical delivery system.

Claims

1. A medical delivery system comprising:

a container adapted to contain a medicament in a chamber defined by the container and a slidably arranged piston which is moveable in a distal direction towards an outlet so as to reduce the volume of the chamber and expel the medicament through the outlet;

a dosing assembly adapted to be fastened to the container, so as to allow a driver of the dosing assembly to move the piston of the container in the distal direction;

wherein one of the container and the dosing assembly defines a first part comprising a first fastening means and the other one of the container and the dosing assembly defines a second part comprising a second fastening means, the first and the second fastening means being adapted to fasten said first part to the second part by translationally moving the first part relative to the second part along an axis followed by a relative rotational locking movement around the axis;

wherein the first fastening means is radially moveable from an initial non-locking position into a second locking position, the first fastening means further defining a first locking surface adapted to engage a second locking surface formed in the second part when the first fastening means is in its second locking position whereby the first part is axially retained with respect to the second part; and

wherein, responsive to said relative rotational locking movement, the first fastening means rotates relative to the second fastening means, the second fastening means being adapted to urge the first fastening means into its second locking position upon relative rotational movement between the first fastening means and the second fastening means.

2. A medical delivery system according to claim 1, wherein, when the first fastening means is positioned in the second locking position such that the first part is retained axially relative to the second part, relative rotation in a direction counter to said relative rotational locking movement, causes the first fastening means to be moved into its initial non-locking position.

3. A medical delivery system according to claim 1, wherein the first part includes a cylindrical rim part, the rim part comprising an axially extending opening adapted to receive the second fastening means of the second part when the first part is moved axially into engagement with the second part, and wherein the rim part further comprises the first fastening means which are formed in a section of said rim part adjoining, in a circumferential direction, said axially extending opening.

4. A medical delivery system according to claim 3, wherein the first fastening means is a segment which is bendable relative to the remainder of the first part and biased towards its initial non-locking position.

5. A medical delivery system according to claim 1, wherein the first fastening means upon relative rotation between the first part and the second part is adapted to bend about a bending axis which is substantially parallel with a longitudinal axis of the medical delivery system.

6. A medical delivery system according to claim 1, wherein the first fastening means, upon relative rotation between the first part and the second part, is adapted to bend about a bending axis which is substantially parallel with a tangent of a surface of the first part and/or the second part.

7. A medical delivery system according to claim 1, wherein both the first and second fastening means are forced in a radial direction upon relative rotation between the first part and the second part.

8. A medical delivery system according to claim 1, wherein the second fastening means comprises an inclined surface which, when the first part is rotated relative to the second part, forces the first fastening means in the radial direction.

9. A medical delivery system according to claim 1, wherein the first part comprise a plurality of first fastening means and wherein the second part comprise a corresponding plurality of second fastening means.

10. A medical delivery system according to claim 1, wherein the first and/or second fastening means define(s) predetermined coding geometries preventing the container from being fastened to the dosing assembly unless each of the first and/or second fastening means defines a predetermined coding geometry which is selected from a predetermined group of coding geometries.

11. A medical delivery system according to claim 10, wherein the coding geometry of each of the first and/or second fastening means is defined by at least one of:

a circumferential extent of the fastening means, an axial extent of the fastening means, a radial extent of fastening means and the circumferential position of the fastening means.

12. A medical delivery system according to claim 1, comprising:

a first container according to any of the preceding claims adapted to be fastened to a first dosing assembly according to any of the preceding claims; and

a second container according to any of the preceding claims adapted to be fastened to a second dosing assembly according to any of the preceding claims; and

wherein at least one of the first and/or second fastening means is/are adapted to prevent the first dosing assembly and second container from being fastened to each other, and to prevent the second dosing assembly and the first container from being fastened to each other.

13. A container for use in a medical delivery system according to claim 1, wherein the container defines the first part, the container includes a cylindrical rim part comprising an axially extending opening adapted to receive the second fastening means of the dosing assembly when the container is moved axially into engagement with the dosing assembly, the cylindrical rim part further comprising first fastening means defining a rim segment which is biased towards an initial non-locking position and which is radially moveable away from its non-locking position into a second locking position, the first fastening means being formed in a section of said rim part adjoining, in a circumferential direction, said axially extending opening.

14. A container according to claim 12 when dependent upon claim 9, wherein the rim part comprises a plurality of axially extending openings and wherein the rim part further comprises a plurality of first fastening means, each being formed in a section of said rim part adjoining, in a circumferential direction, a respective axially extending opening.

15. A container according to claim 13, wherein the first fastening means is bendable about a bending axis which is substantially parallel with a longitudinal axis of the container.

16. A container according to claim 13, wherein the first fastening means is bendable about a bending axis which is substantially parallel with a tangent of an outer surface of the container.

17. A container according to claim 13, wherein the first fastening means defines a free end which is connected to the remainder of the container through a connector which is adapted to be broken upon attachment of the container to a dosing assembly of the medical delivery system according to any of claims 1-12, whereby a user can determine that the container has been used previously.

18. A dosing assembly for use in the medical delivery system according to claim 1.