Compliant coupling assembly for cartridge coupling of a drug delivery device
First Claim
Patent Images
1. An assembly for coupling a drug delivery device to a cartridge sealed by a septum, the assembly comprising:
- an axially extending cannula having a tip region configured to penetrate the septum, said tip region having a width; and
a frame including;
an axially extending guide sized and shaped to secure the cartridge to said frame; and
a mount pivotably positioned on said frame, the cannula being attached to said mount such that said tip region of said cannula protrudes through the septum of the cartridge when said cartridge is secured to said frame by said guide;
wherein a requisite degree of movement between the cannula and the septum at an interface therebetween to cause leakage at the interface defines a leak threshold force of the septum, andwherein said mount permits transaxial movement of said tip region of said cannula by at least a distance equal to the width of the tip region in response to a force applied to the cannula at the interface between the cannula and the septum of less than the leak threshold force.
3 Assignments
0 Petitions
Accused Products
Abstract
An assembly for coupling a drug delivery device to a cartridge is disclosed. Optionally the assembly includes a coupling, for example a cannula, having one end extending toward the cartridge. The cartridge is optionally aligned by a guide. Optionally the cartridge has a limited freedom of movement. The coupling is optionally supported by a mount. In some embodiments, the mount is compliant enough that the end of the coupling that extends toward may move to said limited freedom of movement under a force less than a leak threshold of the connection between the coupler and the cartridge.
-
Citations
13 Claims
-
1. An assembly for coupling a drug delivery device to a cartridge sealed by a septum, the assembly comprising:
-
an axially extending cannula having a tip region configured to penetrate the septum, said tip region having a width; and a frame including; an axially extending guide sized and shaped to secure the cartridge to said frame; and a mount pivotably positioned on said frame, the cannula being attached to said mount such that said tip region of said cannula protrudes through the septum of the cartridge when said cartridge is secured to said frame by said guide; wherein a requisite degree of movement between the cannula and the septum at an interface therebetween to cause leakage at the interface defines a leak threshold force of the septum, and wherein said mount permits transaxial movement of said tip region of said cannula by at least a distance equal to the width of the tip region in response to a force applied to the cannula at the interface between the cannula and the septum of less than the leak threshold force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
Specification