Containers for liquid medicaments
First Claim
1. A container for a liquid medicament suspension having a piston operable therein and an outlet therefrom, and containing a solid mixing element, wherein the mixing element and the inner surface of the container are shaped to co-operate and constrain the mixing element against significant lateral movement but permit axial movement, the mixing element being shaped to permit flow of suspension from either side of the element to the other as the element moves axially.
2 Assignments
0 Petitions
Accused Products
Abstract
A container for a liquid medicament suspension, e.g. an insulin crystal suspension, has a tube with a sealing piston, a cap, and a mixing element which moves along the tube to assist mixing the suspension. The element is guided by the inner surface of the tube and has restricted lateral movement but is free to move axially, for example, by tilting or end to end inversion of the container. Flow passages such as apertures and peripheral recesses are provided in the mixing element which can serve to promote turbulent flow.
The containers are particularly suited for use as multi-dose cartridges for pen-like injection devices or for portable infusion devices which have piston-operating mechanisms to cooperate with the container piston.
138 Citations
12 Claims
- 1. A container for a liquid medicament suspension having a piston operable therein and an outlet therefrom, and containing a solid mixing element, wherein the mixing element and the inner surface of the container are shaped to co-operate and constrain the mixing element against significant lateral movement but permit axial movement, the mixing element being shaped to permit flow of suspension from either side of the element to the other as the element moves axially.
Specification