Huntleigh Technology Limited

Stephen John Cook

Richard Edward Clark

Christopher John Daughtery

Michael David Newton

Rolf Schild

Alastair George Mcleod

Alan Beale

Francis Gregory Baily

Nigel Gough

Nigel A J Gough

Philip Morris

Greg Bailly

A method and apparatus of compensating for a differential error between a plurality of body surface sensors, where each sensor respectively comprises a transmitter and a receiver.

Tissue variability compensation apparatus and method

A fluid flow control system for an electromagnetic pump having an electromagnetic drive () and a compressor (). The control system established a required current in the compressor coils () to control the position and movement of the actuator (), the actuator deflecting a diaphragm within the pump to provide the required flow. The control system includes a command signal generator () to create a signal representing the required flow. The signal is applied to a command processor () with any feedback signals () for example, coil current and/or actuator displacement. The command processor () calculates the appropriate drive signal defined by mark-space ratio, repetition rate, and amplitude. The drive signal controls the voltage supplied to the compressor coils () resulting in a required coil current to provide the desired flow. A dc power supply is used to avoid problems regarding main power supply and frequency.

Compressor drive

An alternating pressure pad including at least two sets of inflatable cells, each set being alternately inflated and deflated, wherein at least one cell in each cell set has for example, circumferential internal membranes or external straps, to accelerate the deflation of the at least one cell.

Alternating pad

The present invention is directed to an alternating pressure pad comprising at least two sets of inflatable cells, each set being alternately inflated and deflated, wherein at least one cell in each cell set has further means, such as, for example, circumferential internal membranes or external straps, to accelerate the deflation of the at least one cell.

A magnetic actuator for reciprocating motion of a compressor diaphragm, piston or the like. The actuator comprises a stator with stator poles, excitation windings, and a backing plate. Non-magnetic support arms carry arced magnet poles and actuate a pair of compressed diaphragms. With the introduction of coil current, magnet poles are attracted to the central stator poles and repulsed by outer poles. A torque about pivot results and hence movement of arms with consequential actuation of the diaphragms. Performance is improved by increasing the flux produced by the electromagnet, thereby reducing flux leakage and fringing.

Magnetic actuator

A low air loss mattress continuously supports a person lying thereon, and includes an upper layer of inflatable cells, and a separate lower layer of inflatable cells. The lower layer of inflatable cells is always maintained at a constant pressure which is higher than the pressure in the upper layer of cells to prevent a person lying on the mattress from contacting the underlying support surface, in particular, when sitting or during transport. Cells forming the upper layer may be inflated at different pressures to provide optimum support to different parts of the body.

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Reading, United Kingdom

Stephen John Cook