Abstract: A medical infusion testing device has a pair of identical measuring tubes with valves to direct flow to one tube while draining the one tube down to a predetermined level. The level of liquid in the tubes is measured by an optical charge coupled device. A logic device is arranged to measure a spot reading over a small flow or an averaged flow over an entire reading.

Abstract: A flow measuring device for checking on medical infusion devices comprises a vertical tube 5 having at least three level sensers 10 and 11 for sensing when a liquid reaches the level of each senser. A logic unit 12 containing a timing device triggered by the first senser measures the time taken for the liquid to reach the second senser and the logic unit compares this time with a predetermined time and if the time is less than the predetermined time sets the device to compare a time taken to reach the third senser but if the time is more than the predetermimed time calculates the flow rate. A multiway valve 1 at the inlet of the device under the control of the logic unit permits flow from the infusion device under test to the tube, from the device under test to a drain 15 or to that drain and the tube, or from the tube to the drain or blocks all flows.

Abstract: A prosthetic device (10) suitable for use in the treatment of stress incontinence in women by location as a cuff around the urethra, to elevate the bladder following prolapse, comprises a body (11) composed predominantly of a cross-linked synthetic polymer hydrogel having a water content of the order of 90%, and preferably about 95%, by weight. The hydrogel can be homogeneous through the body but in this event the body suitably has a local reinforcement (12), such as by embedded plastics material mesh, in at least one relatively small edge portion to enhance its tear resistance in relation to sutures (13) passed therethrough. The body is suitably of kidney shape having dimensional proportions of approximately 5.times.3.times.1. cms.