Cartridge and needle system therefor
AssigneeSanofi-Aventis Deutschland GmbH
InventorsBernd Kühn, Hermann Koch, Christopher James Smith
Life of this patent
Estimating the term…
Abstract
The invention refers to a cartridge (100), such as an injection cartridge, and to a needle system (200) therefore. Further, the invention refers to a combination of such an injection cartridge and a needle system. More specifically, the invention refers to a closure system for an injection cartridge which allows attachment of a needle system to the cartridge.
Claims20
An Injection cartridge configured for assembly within a cartridge holder component of an injection device, where the injection cartridge comprises
- a) a barrel having a distal end and a proximal end;
- b) a housing insert at least partially received in the distal end of the barrel and having a proximal end and a distal end extending beyond the distal end of the barrel;
- c) a central opening in the housing insert configured for at least partially receiving a removable tamper-proof plug having a hub configured to prevent contamination of the central opening or a needle assembly comprising a needle with a distal tip, a proximal tip and a hub surrounding the needle;
- d) at least two snap fit connectors within the central opening of the housing insert configured to guide, align and hold the hub in at least two axial positions within the central opening;
- e) a rubber sealing disc having a distal end and a central opening, where the rubber sealing disc covers the distal end of the housing insert such that the two central openings are aligned;
- and
- f) a metal cap having a hole to allow access to the two central openings, where the cap covers the distal ends of the rubber sealing disc and housing insert and is crimped on the distal end of the barrel to hold the housing insert within the barrel such that no part of the housing insert protrudes outside the metal cap,
- wherein the injection cartridge is configured to fit completely within a cartridge holder of an injection device.
An Injection cartridge configured for assembly within a cartridge holder component of an injection device, where the injection cartridge comprises a barrel having a distal end and a proximal end and a housing insert, wherein the housing insert is at least partially received in the distal end of the barrel and wherein the housing insert comprises a central opening for at least partially receiving a needle system comprising a needle with a distal tip, a proximal tip and a hub surrounding the needle, with said central opening comprising retaining means for guiding and retaining the hub and being aligned to attachment means of the hub and wherein the housing insert is provided with a flange having a sleeve-like section encompassing the distal end of the barrel wherein the sleeve-like section has at least one radial protrusion for fixing the cartridge in the cartridge holder.
Dependencies are inferred from the claim text.