Gyrus Medical Limited

Lifescan IP Holdings, LLC

David Morris

Richard James Curtis

Robert C Humble

Antony Smith

Michael David Newton

David McColl

Gavin Macfie

Stephen Mackintosh

Allan Macrae

Christopher Charles Benn

Richard John Keogh

Robert J Brewer

Richard John Hoodless

Andrew John Ford

Louise Murphy

Joanne Watt

Ole Schlottmann

David Mccoll

A method for determining contamination of a biosensor in which the biosensor is loaded into a test meter and a sample is then applied. First and second predetermined test voltages are applied between spaced electrodes of the biosensor for respective first and second predetermined time intervals. First and second current values are measured during the respective first and second predetermined time intervals. Reference values are determined based on the measured first and second current values. Based on one or more of the reference values, a determination of contamination is made. Reporting of the analyte concentration of the sample can be suppressed based on the determination.

Contamination determination of biosensors used in analyte measurement systems

A surgical shaving instrument () comprises a main body (), a hollow elongate shaft () extending from the main body (). The elongate shaft () defines an elongate inner open volume through the shaft. A tip portion () extends from the distal end region of the elongate shaft (). A driveshaft extends through the elongate shaft () from the main body () to the distal end region of the elongate shaft (). A cutter head () is attached to the driveshaft and located in the tip portion (), the cutter head () extends at least partially out of the tip portion (). The aperture of the tip portion () is defined by an inner edge, and a portion of the inner edge defines a fixed shaver blade () for the instrument, the fixed shaver blade () having a cutting angle which is substantially constant along the inner edge.

Surgical shaving instruments

An electrosurgical instrument is manufactured by presenting an electrode, and attaching a sacrificial portion to the electrode to form a first electrode assembly. An insulating material is molded over the first electrode assembly to form a second electrode assembly, and the second electrode assembly is subjected to a further process which is capable of removing the sacrificial portion without removing the insulating material. The sacrificial portion is removed to form at least one cavity within the electrosurgical instrument.

Electrosurgical instrument

An electrosurgical instrument includes an instrument shaft, a suction tube extending along the shaft, and a tissue treatment electrode at the distal end of the shaft. The tissue treatment electrode includes at least a first part and a second part, the first and second parts each having an outer section including mating surfaces adapted to form a close-fitting barrier when the first and second parts are mated one with another, such as to inhibit the passage of gas across the barrier. At least one of the parts also includes an inner section with a longitudinal recess so as to form a suction lumen when the first and second parts are mated one with another. The suction lumen is in fluid communication with the suction tube, the tissue treatment electrode also including one or more apertures in communication with the suction lumen.

Electrosurgical instrument and system

A shaft () is provided for a flexible endoscopic instrument, the shaft including at least one flexible section () along the length of the shaft, a distal section () located distally of the flexible section, and a proximal section () located proximally of the flexible section (). The distal section () includes a connection to a shaft electrode, while the proximal section () includes at least one connection for connecting the shaft () to an electrosurgical generator (). The shaft also includes a bypass lead () in electrical connection with both the distal section () and the proximal section (). The bypass lead () ensures that the distal section () and the proximal section () remain at the same potential even if the electrical pathway via the flexible section () becomes degraded by wear or damage thereto.

Electrosurgical instrument and shaft

An electrosurgical instrument is provided for the treatment of tissue, the instrument comprising an instrument shaft () having a longitudinal axis, and an electrode assembly at one end of the shaft. The electrode assembly comprises first and second active electrodes (), () and at least one return electrode (), the electrodes being electrically insulated one from another by means of one or more insulation members (). The first and second active electrodes () each have an exposed surface for treating tissue, the exposed surface () of the first active electrode being such as to treat tissue disposed laterally of the longitudinal axis at a first radial position with respect to the instrument shaft. The exposed surface () of the second active electrode is such as to treat tissue disposed laterally of the longitudinal axis at a second radial position with respect to the instrument shaft. The instrument has a first set of connections by which the first active electrode () can be placed in circuit with the return electrode (), and a second set of connections by which the second active electrode () can be placed in circuit with the return electrode ().

An electrosurgical instrument is provided for the treatment of tissue, the instrument comprising an instrument shaft () having a longitudinal axis, and an electrode assembly at one end of the shaft. The electrode assembly comprises a first tissue treatment electrode (), a second tissue treatment electrode (), and a third electrode () which is electrically insulated from the first and second tissue treatment electrodes by means of an insulation member (). The first and second tissue treatment electrodes () each have an exposed surface for treating tissue, the exposed surface of the first tissue treatment electrode () being such as to treat tissue disposed on the longitudinal axis, and the exposed surface of the second tissue treatment electrode () being such as to treat tissue disposed laterally of the longitudinal axis. The instrument has a first set of connections (A,B) by which the first tissue treatment electrode () can be placed in circuit with the second electrode () such that, in use, a current path is established therebetween. The instrument has a second set of connections (B,C) by which the second tissue treatment electrode () can be placed in circuit with the third electrode () such that, in use, a current path is established therebetween.

Electrosurgical instrument with longitudinal and lateral action

An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes.

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Rhondda, United Kingdom

David Morris