Pen-type injector
DC CAFCFirst Claim
1. A housing part for a medication dispensing apparatus, said housing part comprising:
- a main housing, said main housing extending from a distal end to a proximal end;
a dose dial sleeve positioned within said housing, said dose dial sleeve comprising a helical groove configured to engage a threading provided by said main housing;
a dose knob disposed near a proximal end of said dose dial sleeve;
a piston rod provided within said housing, said piston rod is non-rotatable during a dose setting step relative to said main housing;
a driver extending along a portion of said piston rod, said driver comprising an internal threading near a distal portion of said driver, said internal threading adapted to engage an external thread of said piston rod; and
,a tubular clutch located adjacent a distal end of said dose knob, said tubular clutch operatively coupled to said dose knob,wherein said dose dial sleeve extends circumferentially around at least a portion of said tubular clutch.
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Litigations
7 Petitions
Accused Products
Abstract
A housing for a dispensing apparatus. The housing comprising a main housing and a dose dial sleeve. The dose dial sleeve comprising a helical groove configured to engage a threading provided by the housing. A dose knob is disposed near a proximal end of the dose dial sleeve and a piston rod is provided within the housing. The piston rod is non-rotatable during a dose setting step. A driver comprises an internal threading near a distal portion of the driver and is adapted to engage an external thread of the piston rod. A tubular clutch is located adjacent a distal end of the dose knob and operatively coupled to the dose knob. The dose dial sleeve may extend circumferentially around at least a portion of the tubular clutch.
25 Citations
57 Claims
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1. A housing part for a medication dispensing apparatus, said housing part comprising:
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a main housing, said main housing extending from a distal end to a proximal end; a dose dial sleeve positioned within said housing, said dose dial sleeve comprising a helical groove configured to engage a threading provided by said main housing; a dose knob disposed near a proximal end of said dose dial sleeve; a piston rod provided within said housing, said piston rod is non-rotatable during a dose setting step relative to said main housing; a driver extending along a portion of said piston rod, said driver comprising an internal threading near a distal portion of said driver, said internal threading adapted to engage an external thread of said piston rod; and
,a tubular clutch located adjacent a distal end of said dose knob, said tubular clutch operatively coupled to said dose knob, wherein said dose dial sleeve extends circumferentially around at least a portion of said tubular clutch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A pen type drug delivery device, said device comprising:
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an external housing comprising a threading along a portion of an inner surface of said external housing, said external housing extending from a distal end to a proximal end; a dialing element positioned within said housing, said dialing element comprising an outer surface extending from a distal end to a proximal end of said dialing element, wherein said outer surface comprises a helical threading that defines a groove configured to engage said threading provided on said inner surface of said external housing; an actuator disposed about an outer surface of an end of said dialing element near said proximal end of said main housing; a driver extending along at least a portion of a piston rod, said driver comprising a thread adapted to threadingly engage an external thread of a piston rod; and
,a clutch positioned at least partially within an open proximal end of said dialing element and located adjacent a distal end of said actuator and operatively coupled to said actuator, wherein said dialing element extends circumferentially around at least a portion of said clutch; a tubular barrel retainer operatively coupled to said external housing, said tubular barrel retainer comprising a cartridge containing a medicament, said cartridge comprising a reservoir, a piston, a septum, and a cap; said piston movable by said piston rod to be advanced toward an outlet of said cartridge when said piston rod is moved distally. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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51. A clutch for use within a pen type drug delivery device, said clutch comprising
a tubular body, said tubular body extending from a distal end to a proximal end; - and said distal end of said tubular body having a diameter sized such that said distal end of said tubular body may be positioned within a proximal end of a dial member.
- View Dependent Claims (52, 53, 54, 55, 56, 57)
Specification