Flexibly mounted cartridge alignment collar for drug delivery device
First Claim
1. An assembly for aligning a cartridge interface of a drug delivery device to an access channel of a cartridge, the assembly comprising:
- a collar having an opening sized and shaped for engaging said cartridge on opposing sides of said access channel;
a cannula mounted to said collar, a tip region of said cannula extending into the access channel when said collar is engaged to said cartridge;
a frame including a guide fitting to said cartridge to align and position the access channel with respect to said frame; and
a first support movably connecting the collar to the frame to align said collar with the cartridge when the cartridge is aligned and positioned to said frame by said guide, thereby aligning the cannula with the access channel, the first support allowing lateral translational movement of said collar relative to the frame to accommodate misalignment of said access channel with respect to said frame, thereby preserving alignment of said cannula with the access channel.
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Accused Products
Abstract
An alignment assembly for a cartridge interface of a drug delivery device is disclosed. The assembly optionally includes a coupling for opening fluid communication between the cartridge and the delivery device. For example, the coupling optionally includes a cannula insertable through a septum of the cartridge. The assembly may include a guide for positioning the cartridge and/or an access channel thereof within a first precision of a loaded position. The assembly optionally includes a cartridge engagement fitting (for example a gripping expander sleeve collar) attached to the coupling. Optionally when the cartridge is engaged to the fitting, the coupling is retained in connection with the access channel to within a second precision. The second precision is optionally higher than the first precision. In some embodiments one or more compliant supports movably retain the fitting oriented to engage the cartridge when the access channel is in the loaded position.
403 Citations
15 Claims
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1. An assembly for aligning a cartridge interface of a drug delivery device to an access channel of a cartridge, the assembly comprising:
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a collar having an opening sized and shaped for engaging said cartridge on opposing sides of said access channel; a cannula mounted to said collar, a tip region of said cannula extending into the access channel when said collar is engaged to said cartridge; a frame including a guide fitting to said cartridge to align and position the access channel with respect to said frame; and a first support movably connecting the collar to the frame to align said collar with the cartridge when the cartridge is aligned and positioned to said frame by said guide, thereby aligning the cannula with the access channel, the first support allowing lateral translational movement of said collar relative to the frame to accommodate misalignment of said access channel with respect to said frame, thereby preserving alignment of said cannula with the access channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification