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 apparatus 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;
an tip region of said cannula extending into said 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 anda compliant support compliantly aligning and positioning said collar with respect to said frame said aligning and positioning the collar to engage the cartridge when the cartridge is aligned and positioned to said frame by said guide;
said compliant support allowing movement of said collar preserving alignment of said cannula to said access channel upon misalignment of said access channel with respect to said frame.
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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.
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Citations
20 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 apparatus 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;
an tip region of said cannula extending into said 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 compliant support compliantly aligning and positioning said collar with respect to said frame said aligning and positioning the collar to engage the cartridge when the cartridge is aligned and positioned to said frame by said guide;
said compliant support allowing movement of said collar preserving alignment of said cannula to said access channel upon misalignment of said access channel with respect to said frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of supplying a drug to a delivery device comprising:
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compliantly supporting a collar including a cannula in a ready position on a frame of said drug delivery device; positioning a cartridge within a first deviation tolerance of a loaded position with respect to a frame;
said positioning engaging an access channel of said cartridge to said collar when said cartridge is in said ready position;inserting an end of said cannula into said access channel; allowing movement of said collar with respect to said frame to comply with said loaded position of said cartridge to preserve an alignment of said end of said cannula with respect to said access channel to a second deviation tolerance less than said first deviation tolerance. - View Dependent Claims (16, 17, 18)
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19. A method of preventing leakage from a cartridge of a drug delivery device comprising:
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providing a cartridge fitting supported on a housing of the delivery device and a cannula mounted to the fitting; piercing the septum with the cannula; rigidly engaging the fitting to the cartridge; allowing the fitting to move along with the cartridge with respect to the housing such that the cannula moves with the septum;
wherein said moving of the cannula with the septum provides for inhibiting leaks caused by movement of the septum with respect to the cannula. - View Dependent Claims (20)
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Specification