Abstract: An electrical recharger unit (10) comprising a master (12) and slave (14) device each having electromagnetic coils capable of being brought into close or touching proximity to one another. A power supply delivers electrical currents to an electromagnetic coil of the master device. The electromagnetic coils are wound onto a transformer core and primary transfer means made at least partially of a ferromagnetic polymer material is associated with an end of each core to provide enhanced contact between the master and slave device.

Abstract: A position transducer having first and second spaced apart resistive surfaces (22, 24), the first resistive surface (22) being connected to a first pair of spaced apart and substantially parallel electrodes (14) and the second resistive surface (24) being connected to a second pair of spaced apart and substantially parallel electrodes (16) orientated at substantially right angles to the first pair of electrodes, wherein at least one of the resistive surfaces is capable of being bent to touch the other surface such that current can flow from one of the first pair electrodes to one of the second pair electrodes via the resistive surfaces.

Abstract: A syringe driver (10) comprising retaining means for retaining the body of a syringe, and exerting means (20) for exerting a force to the syringe plunger, and sensing means (52) for sensing the compressive force applied to the syringe plunger in use, wherein the sensing means comprises a pressure sensitive material, such as a quantum tunneling material.