Infusion pump and drive systems therefore

Abstract

Abstract A drug infusion pump having a drive system including a drive motor (49), a worm gear (53) on the output shaft of said motor, a worm wheel (55) meshing with said worm gear (53) and constructed to drive an output reduction gear (60) and clutch means (62) associated with said output gear (60) for disengaging drive to a drive head (61) engaged by a drive belt (83) which is permanently connected to a syringe actuator (7) to cause controlled infusion of the contents of a syringe under the control of a central control system including a microprocessor (20) and programmable memory means (21 and 23) which determine the manner in which the infusion is performed. A syringe clamping arm (5) is associated with a potentiometer (24) which provides to the controller diameter information regarding the syringe. The programmable memory means (23) includes data relating to one or more standard syringe sizes to enable automatic operation on insertion of a standard syringe. In the event that a non-standard syringe is to be used, the infusion pump may be simply programmed to allow such non-standard syringes to be used.

Inventors

• 👤 David Pilkington Crankshaw

Bibliographic Details