Infusion pump

Details Infusion pump Infusion pump

A - Human Necessities

61

M

A61M 5/145 (2006.01) A61M 5/142 (2006.01)

Patent

CA 2756560

A drive mechanism for an infusion pump, the drive mechanism for linearly moving a syringe plunger within a syringe barrel supported by the pump, the mechanism comprises a motor; a lead screw rotatably connected to the motor; a slide assembly including a threaded member supported thereon, the threaded member including first and second threaded portions of a rotary nut coupled to threads of the lead screw; an arm including one end connected to the slide assembly and one end adapted to be engaged with the syringe plunger, the threaded member being in engagement with the lead screw, wherein upon rotation of the lead screw by the motor, the slide assembly linearly moves the arm, wherein the arm is adapted to move the syringe plunger within the syringe barrel; and a disengagement rod pivotable to engage and rotate the rotary nut to a disengaged position, such that the threaded portions no longer engage the lead screw.

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