Claims for Patent: 8,679,069

Summary for Patent: 8,679,069

Title:	Pen-type injector
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.
Inventor(s):	Veasey; Robert Frederick (Warwickshire, GB), Perkins; Robert (Oxfordshire, GB), Plumptre; David Aubrey (Worcestershire, GB)
Assignee:	DCA Design International, Ltd. (Warwick, GB)
Application Number:	12/944,544
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 8,679,069
Patent Claims:	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, said helical groove provided along an outer surface of said dose dial sleeve; a dose dial grip 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 drive sleeve extending along a portion of said piston rod, said drive sleeve comprising an internal threading near a distal portion of said drive sleeve, 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 dial grip, said tubular clutch operatively coupled to said dose dial grip, wherein said dose dial sleeve extends circumferentially around at least a portion of said tubular clutch. 2. The housing part of claim 1, further comprising a cartridge retaining part operatively coupled to said main housing, said cartridge retaining part comprising a fluid container, wherein said fluid container defines a medicament filled reservoir with a movable plunger at a proximal end and an outlet at a distal end, said cartridge piston movable by said piston rod to be advanced toward an outlet of said fluid container when said piston rod is moved distally, wherein during a dose setting step, said dose dial grip, is rotated and moves away from said proximal end of said main housing so that a dose of a medicament contained within said medicament filled reservoir can be selected. 3. The housing part of claim 2, wherein said dose dial grip is operatively configured to said tubular clutch so that, during said dose setting step, said tubular clutch, said dose dial sleeve, and said dose dial grip rotate and move in a proximal direction in relation to said main housing.