Dose counter and medication delivery device

A dose counter comprising:

• a housing;
• an indicator member rotatably mounted in said housing, said indicator member configured with dosage indicia, wherein said indicator member is rotatable upon a predetermined number of actuations, wherein said predetermined number is greater than one;
• and
• a movement limiter operably engaged with said indicator member to prevent any rotation of said indicator member in response to said actuations occurring between said predetermined number of actuations.

A dose counter comprising:

• a housing;
• an indicator member rotatably mounted in said housing about an axis extending in an axial direction, said indicator member configured with dosage indicia, wherein said indicator member is rotatable about said axis upon a predetermined number of actuations, wherein said predetermined number is greater than one;
• and
• a movement limiter reciprocally moveable along said axial direction relative to said indicator member in response to each of said actuations occurring between said predetermined number of actuations, wherein said movement limiter is operably engaged with said indicator member to prevent any rotation of said indicator member.

A method of assembling a dose counter comprising:

• moving a drive member relative to an indicator member along a first direction;
• engaging a biasing portion of the drive member with said indicator member and biasing said drive member in a second direction substantially perpendicular to said first direction;
• releasing said drive member;
• and
• engaging said indicator member with a pawl portion of said drive member.

A dose counter comprising:

• a housing;
• an indicator member rotatably mounted in said housing about an axis, said indicator member configured with dosage indicia around a circumferential surface thereof, said indicator member comprising a side face, wherein a plurality of ratchet teeth are formed in said side face, said ratchet teeth arranged circumferentially around and radially spaced from said axis, and wherein a plurality of nesting pockets are formed in said side face adjacent to and in alternating sequential spacing relative to said plurality of ratchet teeth, wherein said nesting pockets are arranged circumferentially around and radially spaced from said axis;
• a pawl shaped and positioned to sequentially engage said ratchet teeth;
• and
• a non-return member shaped and positioned to sequentially engage said nesting pockets.

A dose counter comprising:

• a housing;
• an indicator member rotatably mounted in said housing;
• a drive gear operably coupled to said indicator member;
• a pawl moveable toward and away from said drive gear during normal operation;
• and
• an arrestor brace moveable adjacent said flexible pawl during a high-impact event, wherein said arrestor brace prevents said pawl from moving away from said drive gear during said high-impact event.