Abstract: The present invention relates to an apparatus for affixing intramedullary devices in a body. In particular the apparatus comprises a jig affixable to an intramedullary nail. There is also provided a method of determining the position of holes to be drilled through a bone which align with holes in the nail.

Abstract: The present invention relates to an apparatus for affixing intramedullary devices in a body. In particular the apparatus comprises a jig affixable to an intramedullary nail. There is also provided a method of determining the position of holes to be drilled through a bone which align with holes in the nail.

Abstract: A surgical guide device comprises first and second limbs pivotally connected together, with a respective guide sleeve pivotally attached to each limb. Each guide sleeve has a bore through the sleeve that can guide a drill bit or bone fixing for insertion into a fragmented bone portion. The device has an orientation mechanism adapted to change the orientation of the guide sleeves relative to the limbs as the limbs move relative to one another, so as to maintain the orientation of the guide sleeves relative to one another during pivotal movement of the limbs.

Abstract: A surgical guide device comprises first and second limbs pivotally connected together, with a respective guide sleeve pivotally attached to each limb. Each guide sleeve has a bore through the sleeve that can guide a drill bit or bone fixing for insertion into a fragmented bone portion. The device has an orientation mechanism adapted to change the orientation of the guide sleeves relative to the limbs as the limbs move relative to one another, so as to maintain the orientation of the guide sleeves relative to one another during pivotal movement of the limbs.

Abstract: A bone fixture apparatus has an elongate fixture device intended to be inserted in a metaphysical region of a long bone. The device is inserted generally transversely of the direction of the medullary cavity in the bone. The fixture device includes an aperture extending laterally thereof and intended to accommodate an intramedullary nail inserted longitudinally therethrough into the cavity. The fixture device is further formed with an axial aperture intended to receive a securing element capable of insertion therein to firmly engage said nail with the fixture device. Also disclosed is a jig arrangement for locating, relative to a long bone, the bone fixture apparatus.

Abstract: A bone fixture apparatus has an elongate fixture device intended to be inserted in a metaphysical region of a long bone. The device is inserted generally transversely of the direction of the medullary cavity in the bone. The fixture device includes an aperture extending laterally thereof and intended to accommodate an intramedullary nail inserted longitudinally therethrough into the cavity. The fixture device is further formed with an axial aperture intended to receive a securing element capable of insertion therein to firmly engage said nail with the fixture device. Also disclosed is a jig arrangement for locating, relative to a long bone, the bone fixture apparatus.

Abstract: A bone fixing device and a method of distracting a fracture are described. The bone fixing device has threads at both a leading end and a trailing end, and the pitch of the threads are greater at the trailing end. This causes the leading end of the bone fixing device to travel more slowly through the bone than the trailing end, which loads the threads of the screw to put the screw under compression, so that the threads bite more effectively into the bone. A jig and method for insertion of two bone fixing devices are also described. The jig defines parallel planes of insertion which cross when viewed in a direction perpendicular to the parallel planes.

Abstract: An implantable replacement joint is described. The replacement joint includes first and second components having respective bores, and a flexible member within a cavity formed by the respective bores.

Abstract: An emitter has an electron supply layer and a tunneling layer formed on the electron supply layer. Optionally, an insulator layer is formed on the electron supply layer and has openings defined within in which the tunneling layer is formed. A cathode layer is formed on the tunneling layer to provide a surface for energy emissions of electrons and/or photons. Preferably, the emitter is subjected to an annealing process thereby increasing the supply of electrons tunneled from the electron supply layer to the cathode layer.

Abstract: A method and apparatus for determining information concerning ischaemia using a pH sensor. Embodiments of the invention can be used to determine ischaemia caused by a number of factors, including acute compartment syndrome and vascular disorders, e.g. scepticaemia.

Abstract: Apparatus for handling of at least one implant for a body is provided. The apparatus has a radio translucent portion and a radio-opaque marking. The apparatus can optionally comprise a jig affixable to an intramedullary nail, which can be used to determine the position of holes to be drilled through a bone which align with holes in the nail. The radio-opaque marking will appear on an x-ray and can be used to indicate the relative alignment of the jig and the nail.

Abstract: An emitter has an electron supply layer and a tunneling layer formed on the electron supply layer. Optionally, an insulator layer is formed on the electron supply layer and has openings defined within in which the tunneling layer is formed. A cathode layer is formed on the tunneling layer to provide a surface for energy emissions of electrons and/or photons. Preferably, the emitter is subjected to an annealing process thereby increasing the supply of electrons tunneled from the electron supply layer to the cathode layer.

Abstract: An emitter has an electron supply layer and a tunneling layer formed on the electron supply layer. Optionally, an insulator layer is formed on the electron supply layer and has openings defined within in which the tunneling layer is formed. A cathode layer is formed on the tunneling layer to provide a surface for energy emissions of electrons and/or photons. Preferably, the emitter is subjected to an annealing process thereby increasing the supply of electrons tunneled from the electron supply layer to the cathode layer.

Abstract: A fluid-jet printhead has a substrate having at least one layer defining a fluid chamber for ejecting fluid. The printhead also includes a resistive layer disposed between the fluid chamber and the substrate wherein the fluid chamber has a smooth planer surface between the fluid chamber and the substrate. The printhead has a conductive layer disposed between the resistive layer and the substrate wherein the conductive layer and the resistive layer are in direct parallel contact. The conductive layer forms at least one void creating a planar resistor in the resistive layer. The planar resistor is aligned with the fluid chamber.

Abstract: An emitter has an electron supply layer and a tunneling layer formed on the electron supply layer. Optionally, an insulator layer is formed on the electron supply layer and has openings defined within which the tunneling layer is formed. A cathode layer is formed on the tunneling layer to provide a surface for energy emissions of electrons and/or photons. Preferably, the emitter is subjected to an annealing process thereby increasing the supply of electrons tunneled from the electron supply layer to the cathode layer.

Abstract: A bone fixture apparatus for application to a metaphyseal region of a long bone (1) comprises an elongate fixture device (2) intended to be inserted, in said region, generally transversely of the direction of the medullary cavity (5) in said bone; wherein the fixture device includes an aperture (3) extending laterally thereof and intended to accommodate an intramedullary nail (4) inserted longitudinally therethrough into said cavity, and wherein said fixture device is further formed with an axial aperture (6) intended to receive a securing element (7) capable of insertion therein to firmly engage the said nail with the fixture means. Also disclosed is a jig arrangement for locating, relative to a long bone, the bone fixture apparatus.

Abstract: An optical analogue to digital (A/D) converter for converting an input analogue voltage signal into a digital output, comprising means for frequency modulating an optical signal with an input analogue voltage signal, delay means for splitting the frequency modulated optical signal and generating at least one differentially delayed signal and at least one reference signal, at least one combining means arranged to combine the or one of the delayed optical signals with the or one of the reference signals, and at least one converter means for converting a combined signal output from an associated one of the combining means to a digital code.

Abstract: An emitter has an electron supply layer and a tunneling layer formed on the electron supply layer. Optionally, an insulator layer is formed on the electron supply layer and has openings defined within in which the tunneling layer is formed. A cathode layer is formed on the tunneling layer to provide a surface for energy emissions of electrons and/or photons. Preferably, the emitter is subjected to an annealing process thereby increasing the supply of electrons tunneled from the electron supply layer to the cathode layer.

Abstract: A fluid-jet printhead has a substrate having at least one layer defining a fluid chamber for ejecting fluid. The printhead also includes a resistive layer disposed between the fluid chamber and the substrate wherein the fluid chamber has a smooth planer surface between the fluid chamber and the substrate. The printhead has a conductive layer disposed between the resistive layer and the substrate wherein the conductive layer and the resistive layer are in direct parallel contact. The conductive layer forms at least one void creating a planar resistor in the resistive layer. The planar resistor is aligned with the fluid chamber.

Abstract: A fluid-jet printhead has a substrate having at least one layer defining a fluid chamber for ejecting fluid. The printhead also includes a resistive layer disposed between the fluid chamber and the substrate wherein the fluid chamber has a smooth planer surface between the fluid chamber and the substrate. The printhead has a conductive layer disposed between the resistive layer and the substrate wherein the conductive layer and the resistive layer are in direct parallel contact. The conductive layer forms at least one void creating a planar resistor in the resistive layer. The planar resistor is aligned with the fluid chamber.