Patent ID: 6554800
Filing Date: 2003-04-29
Classification: A61M

Abstract:
A motor for a medication pump, comprising:an energizable winding having a length and defining a magnetic field generation area adjacent said winding wherein a magnetic field is generated in said magnetic field generation area in response to energizing said winding; a housing comprising a first member having a guide track, said housing further having a unitary, second member defining a cavity adapted to receive said winding, said housing cavity having a length at least as long as said winding length, said housing second member further having an opening at one end and adapted to receive said housing first member wherein said first member guide track extends at least partially into said winding magnetic field generation area, said housing second member further having a guide track aligned with the first member guide track; an armature slidingly received in said housing first member guide track, said armature being adapted to slide along said first member guide track in response to a magnetic field generated in said magnetic field generation area; a push member slidingly received in said housing second member guide track and positioned to be engaged by said armature and to slide along said second member guide track in response to engagement by said armature; and a pawn having a base at one end thereof and a tip projecting from said base at an opposite end thereof, said pawn being mounted in said housing and adapted for rocking motion between a rest position and an actuated position, said pawn base being positioned to be engaged by said push member and moved from said rest position to said engaged position in response to engagement of said pawn by said push member.