gear 44 on the housing 42 by gears 71 72 the gear 71 being a reduction gear the pcb 31 may be connected to an led display 75 on the top of the housing 13 which indicates various stages of operation of the needle remover apparatus 10 in use the apparatus 10 is first activated by rotation of the closure switch 17 which opens the aperture 20 and causes the leg 33 to close contact 27 on the pcb this may illuminate a warning led on the display 75 a needle n is inserted through the opening 119 in the housing 13 and aperture 64 until the needle body b engages the activation plate 61 further inward movement of the needle body b depresses the activation plate 61 locating the needle hub h between the jaws 47 and causing the switch means 65 to move the limb 66 to operate contact 28 on the pcb the needle n passes through the gap between the jaws 47 the closure of contact 28 operates the motor 24 which via gears 51 71 72 rotates the jaw housing 42 in one direction the jaws 47 are connected to the housing 42 by the lugs 52 engaging in the slots 53 in the cam plates 45 46 limited rotation of the housing 42 relative to the jaws 47 moves the lugs along the slots 53 moving the jaws together to clamp the hub h once the lugs 52 abut the end of the respective slot 53 further rotation of the housing 42 unscrews the needle and hub from the syringe body the motor 24 is programmed to rotate the housing.