Abstract: The disclosure relates to transceivers incorporating a transmit-receive switching circuit, embodiments of which include a radio transceiver circuit comprising: a first amplifier for amplifying signals received from an antenna via an antenna connection; a second amplifier for amplifying signals to be transmitted by the antenna via the antenna connection; and a switching circuit connected between an input of the first amplifier and the antenna connection, the switching circuit comprising a capacitor, a switching element and an impedance matching element, wherein the switching element is configured to connect a node between the capacitor and the impedance matching element to a signal ground when the transceiver is in a transmit mode.

Abstract: The disclosure relates to transceivers incorporating a transmit-receive switching circuit, embodiments of which include a radio transceiver circuit comprising: a first amplifier for amplifying signals received from an antenna via an antenna connection; a second amplifier for amplifying signals to be transmitted by the antenna via the antenna connection; and a switching circuit connected between an input of the first amplifier and the antenna connection, the switching circuit comprising a capacitor, a switching element and an impedance matching element, wherein the switching element is configured to connect a node between the capacitor and the impedance matching element to a signal ground when the transceiver is in a transmit mode.

Abstract: In an arrangement for obtaining reliable anchoring of a threaded implant in dentine, a hole is made in the bone substance. In the side wall of the hole it is possible to establish an internal threading which can cooperate with an external threading on the implant. The implant threading is arranged to force the bone substance out in essentially radial directions as a function of the extent to which the implant is screwed into the hole. The threading is arranged to effect greater forcing out of the bone substance at the outer parts of the hole than at the inner parts of the hole. The degree of forcing out is adapted in relation to the softness of the bone in order to achieve the reliable anchoring. Along at least part of the longitudinal direction of the implant, the implant threading can be given a non-circular configuration for the purpose of obtaining improved rotational stability in soft/weak bone.

Abstract: A twist drill and bone tap each monitor torque while drilling or threading to assess jaw bone quality and a method for accessing bone quality prior to or while tapping into the bone during a dental implantation procedure. The twist drill for assessing bone quality includes a shank having a proximal section and a distal section. A mounting portion is arranged to connect with a torque monitoring device. A drill point is located at an end of the cutting portion of the drill bit having a helix angle of between about 45 to about 55°, wherein a measurable torque is generated that can be assessed as a function of the quality of the bone material being drilled. A tap for assessing bone quality during tapping includes a shank having opposed ends and a mounting portion is formed in one end and connects with a torque monitoring device.

Abstract: Certain disclosed accelerometer sensors and methods employ a proof mass that is acted upon by multiple feedback paths. One illustrative sensor embodiment includes an electrode arrangement proximate to a proof mass, the electrode arrangement providing multiple electrostatic force centroids on the proof mass. The sensor embodiment further includes multiple feedback paths, each feedback path independently controlling an electrostatic force for a respective centroid, and an output unit that converts signals from the multiple feedback paths into an acceleration-responsive output signal. An illustrative method embodiment derives multiple feedback signals from at least one displacement signal, applies the multiple feedback signals to an arrangement of electrodes that capacitively couple the proof mass to a substrate, and converts the multiple feedback signals into an acceleration signal.

Abstract: In an arrangement for obtaining reliable anchoring of a threaded implant in dentine, a hole is made in the bone substance. In the side wall of the hole it is possible to establish an internal threading which can cooperate with an external threading on the implant. The implant threading is arranged to force the bone substance out in essentially radial directions as a function of the extent to which the implant is screwed into the hole. The threading is arranged to effect greater forcing out of the bone substance at the outer parts of the hole than at the inner parts of the hole. The degree of forcing out is adapted in relation to the softness of the bone in order to achieve the reliable anchoring. Along at least part of the longitudinal direction of the implant, the implant threading can be given a non-circular configuration for the purpose of obtaining improved rotational stability in soft/weak bone.

Abstract: A balcony fence includes an integrated wind shield of adjustable glazed panels that can be raised and lowered. The balcony fence with the integrated glazed panels is provided with lamellar glass both in its lower fixed part and in the part that can be raised and lowered. The balcony fence with the integrated glazed panels also includes a counterweight balancing mechanism.

Abstract: In an arrangement for obtaining reliable anchoring of a threaded implant (3) in dentine, a hole (2) is made in the bone substance. In the side wall (2b) of the hole it is possible to establish an internal threading which can cooperate with an external threading (3d) on the implant. The implant threading is arranged to force the bone substance out in essentially radial directions as a function of the extent to which the implant is screwed into the hole. The threading is arranged to effect greater forcing out of the bone substance at the outer parts of the hole than at the inner parts of the hole. The degree of forcing out is adapted in relation to the softness of the bone in order to achieve the reliable anchoring. Along at least part of the longitudinal direction of the implant, the implant threading can be given a non-circular configuration for the purpose of obtaining improved rotational stability in soft/weak bone.

Abstract: Certain disclosed accelerometer sensors and methods employ a proof mass that is acted upon by multiple feedback paths. One illustrative sensor embodiment includes an electrode arrangement proximate to a proof mass, the electrode arrangement providing multiple electrostatic force centroids on the proof mass. The sensor embodiment further includes multiple feedback paths, each feedback path independently controlling an electrostatic force for a respective centroid, and an output unit that converts signals from the multiple feedback paths into an acceleration-responsive output signal. An illustrative method embodiment derives multiple feedback signals from at least one displacement signal, applies the multiple feedback signals to an arrangement of electrodes that capacitively couple the proof mass to a substrate, and converts the multiple feedback signals into an acceleration signal.

Abstract: A completely new system for a balcony fence (1) with an integrated wind shield of adjustable glazed panels (8) that can be raised and lowered. The balcony fence (1) with the integrated glazed panels (8) is provided with lamellar glass both in its lower fixed part and in the part that can be raised and lowered. The balcony fence (1) with the integrated glazed panels (8) as wind shield has been created with the idea in mind that it is to be easy to use, and that raising and lowering is to be possible with a single hand operation. It is possible for the user to determine the desired height of the glazed panel (8), due to counterweight balancing.

Abstract: Apparatus and a method for controlling vermin either directly or indirectly via objects giving shelter to the vermin. Cooling of the vermin is effected by providing dry snow particles by passing pressurized carbon dioxide through a nozzle directed at the vermin. Smaller and larger snow particle sizes are allocated within a selected range of sizes and velocities. Environmentally friendly and rapid control of the vermin is achieved, and an effectively functioning cooling system is provided, which, by the gradual supply of snow, executes cooling through different velocities and sizes of the snow particles. In a initial cooling phase small snow particles provide cooling by sublimating and giving off cold rapidly. Larger snow particles then penetrate through the gas barrier that is created by the sublimating small snow particles to maintain the cooling effect.

Abstract: Arrangement and application for executing control measures against vermin either directly or indirectly via objects giving shelter to the vermin, e.g. substrates of substances. The control measure is based on the rate of cooling the vermin, object, etc., with the help of dry snow particles to which smaller and larger sizes are allocated within a selected range of sizes and velocities are allocated within a selected range of velocities. The arrangement and the application arc associated with advantages in the sense that environmentally friendly and rapid control is achieved, and in that an effectively functioning cooling system is obtained, which, by the gradual supply of snow, executes cooling through different velocities and sizes of the snow particles. Rapid cooling of a defined target can be obtained in this way. In an initial phase the small snow particles contribute most to the cooling by sublimating and giving off cold rapidly.

Abstract: The invention relates to a device for ventilating the middle ear by means of a ventilation tube which is made of a tissue-compatible material, preferably titanium, and with a through-channel for air communication between the cavity of the middle ear and the outside air. The ventilation tube comprises, on the one hand, a front portion (2) which is arranged to be introduced into bone tissue and is designed so that a permanent anchoring is obtained in the bone tissue, and, on the other hand, a rear portion (6) which forms a passage through the skin. The ventilation tube further comprises an outer tube (1) which is made of the said tissue-compatible material and an inner tube (8) which is arranged releasably in the outer tube and whose inner bore forms the said through-channel (14) for air communication between the cavity of the middle ear and the outside air.

Abstract: A surgical instrument (12) includes a tool for screwing in a surgical implant or for cutting a thread in human bone tissue with thread tap. Also included is a unit (2) for supplying power and controlling the speed of an electric motor included in the tool, for example a d.c. motor (1). Detection members (7, 8) transmit signals (i1), dependent on the torque of the tool, to display members which comprise a computer unit (9) with screen (10). Displayed on the screen is a curve which shows the torque in relation to the torsional angle position. A curve or curves displayed in this way form(s) the basis for assessing the quality of the implant or of the bone tissue.

Abstract: The invention relates to a preparation for chemical-mechanical treatment of caries by means of a caries-dissolving two-component liquid. One of the components is an active, caries dissolving component and the other a component which reduces the aggressiveness of the active component to mucous membranes. The active component is a chloride compound comprising active chlorine, i.e. chlorine having a charge state of +1, Cl(+1), which chloride has a somewhat lower reactivity than sodium hypochlorite and then also a somewhat reduced dissolving effect on the carious substance.

Abstract: A dental instrument is provided for removing caries attacked dentine in connection with chemical-mechanical treatment of caries by means of a caries-dissolving solution applied to the caries for loosening the caries tooth substance. The instrument comprises a tool head with a number of scraping edges or bristles for scraping away the loosened caries tooth substance. In the spacings formed therebetween drops of the gel solution used for the chemical-mechanical treatment can be carried (transported) up to the tooth treatment site. The instrument is power-driven in order to provide the tool head with a predetermined scraping motion.

Abstract: A method and arrangement for producing elongate support element (4) for replacement structure (9) in jaw (2). The support element is applied to implants in the jaw with great accuracy of fit. Identification information (16) is delivered to computer equipment (15) in which supplementary information (17) is input. With the aid of the said information, the computer equipment extracts control data (19) for milling equipment (20) which mills out the support element from a blank. With the aid of the milling information (19), the milling equipment executes the support element according to the shape determined in the computer equipment. In addition, the information comprises details on the configurations of the said seats and the positioning in the support element material/blank.

Abstract: A method and apparatus for producing an elongate support element for a replacement structure in a human body part such as the jaw. The support element is applied to implants in the jaw with great accuracy of fit. Identification information and supplementary information is delivered to computer equipment. Using the information, the computer equipment extracts control data for milling equipment which mills out the support element from a blank. Using the milling information, the milling equipment forms the support element according to a shape determined in the computer equipment. In addition, the information comprises details on the configuration of seats for the implants, and the positioning of the seats in the support element material.

Abstract: A camera and a method for taking stereophotographic pictures. The camera comprises a camera housing for carrying film, a film placement plate in the camera housing for positioning against a portion of the film to be exposed to ensure precise planar placement of the portion of film while exposed, a lens which is fixed to the camera housing to obtain optical and geometric stability, and at least one reflecting surface on the camera extending essentially parallel to and along a periphery of a linear imaging path from the lens and an object to be photographed, wherein the lens receives a first portion of the optical radiation which emanates directly from the object and produces an actual image of the object on the film and the at least one reflecting surface reflects a second portion of the optical radiation emanating from the object toward the lens and creates a virtual image of the object on the film, the virtual image having an viewing angle of the object different than the actual image.