Abstract: The invention relates to a preparation unit for tubeless and cordless dental treatment appliances such as handpieces or the like which comprise at least one charging device that is connected to a pressure source for flowable media in order to charge the treatment appliances.

Abstract: A handpiece for stomatological application of laser light includes a movable light and agent transmission system connected to a proximal side of the handpiece and an application element containing a work tip connected to a distal side of the handpiece. Advantageously, the laser beam in the application element is directed onto an exit location that proceeds essentially transversely with respect to the longitudinal axis of the application element, and is focused such that the focus of the laser light lies immediately in front of a light exit window.

Abstract: An diagnostic apparatus for generating X-ray exposures for tomosynthesis includes a position detector (2, 4) for registering the mutual positional relationship between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination. The position detector (2, 4) can be arranged in part or in whole on the radiation transmitter (1), on the radiation receiver (3) or on the object (7) under examination. An evaluation device (11) evaluates the signals from the position detector (2, 4) and generates correction signals if the relative position between the radiation transmitter (1) and/or the radiation receiver (3) and/or the object (7) under examination deviates from the home position. The correction signals are then fed to an image-generating device (12) for use in the image processing.

Abstract: A method and apparatus for cleaning and sterilizing all parts of a dental apparatus head exposed to contamination in a practical and economical way includes a cleaning chamber, which may be either a separate unit or an integral part of an apparatus head which receives dental instruments connected by hoses to the head. In one embodiment, the chambers are formed within the head and is closed by a flexible cover so that a cleaning fluid can be introduced into the chamber to clean the exterior surfaces and then disinfectants can be sprayed on the exterior surfaces and pass through internal conduits of the hoses and instruments. In another embodiment, the chamber is separate and receives the entire apparatus head and/or support brackets and is closable so that the head and/or support brackets can be thoroughly cleaned on the external surfaces and then subsequently disinfected with the internal surfaces being disinfected.

Abstract: A number of solutions are presented for an image rectification, i.e. a realistic alignment of the image given employment of an intraoral camera. To this end, arrangement is present that reproduce the image on a monitor erect and non-reversed regardless of the sightline of the camera.

Abstract: An x-ray diagnostics installation includes a device for positioning a radiation emitter such that the reference ray of an emitted ray beam always and automatically intersects a reference axis that is stationary with reference to said device at an acute angle .alpha. when the radiation emitter is coupled to the device. X-ray exposures for tomosynthesis can thus be produced in a simple way.

Abstract: A regulatable dental turbine includes an actuator arrangement which is provided for regulating the speed by varying the amount of an essentially constant volume stream of drive fluid striking a turbine wheel of the dental turbine. The change of the direction based on the actuator arrangement may bypass a portion of the volume hitting the blades of the dental turbine or may create a portion of the stream as a deceleration force acting on the turbine wheel. The actuator arrangement can operate in a speed-dependent fashion based on the flow deflected by the blades of the wheel on an impact surface or can act with a speed sensor determining the rate of rotation of the turbine wheel.

Abstract: An x-ray diagnostics installation for producing x-ray exposures of body parts of a patient has a line detector camera arranged diametrically opposite a radiation source, the line detector camera containing an x-ray detector arranged behind a slot-shaped opening, the width of the x-ray detector being matched to the width or length of the body part to be registered. An adjustment system adjusts the line detector camera relative to the body part such that the slot opening is moved along the body part, whereby the fan beam limited by the radiation diaphragm of the radiation source is moved synchronously relative to the camera motion. The line detector camera can be horizontally or vertically arranged.

Abstract: A method and apparatus for treating hard dental substances wherein the work can be carried out in an indirect technique uses an intraoral video camera, whose images are reproduced on a monitor. To accomplish this and to prevent particles and bacteria in the patient's mouth from being spread, the apparatus includes a shielding which is arranged on the patient's mouth to prevent the emergence of particles but to allow the insertion of the treatment handpieces, the camera into the mouth and to the treatment location.

Abstract: A regulatable dental turbine includes an actuator arrangement which is provided for regulating the speed by varying the amount of an essentially constant volume stream of drive fluid striking a turbine wheel of the dental turbine. The change of the direction based on the actuator arrangement bypasses a portion of the volume hitting the blades of the dental turbine. The actuator arrangement operates in a speed-dependent fashion based on the flow deflected by the blades of the wheel on an impact surface.

Abstract: A dental instrument having an active tool for treating a hard dental substance includes an arrangement for spraying water to cool the preparation location with the water either forming an envelope surrounding the tool or being a finely atomized stream of a solid angle directed onto the preparation location. The volume proportion of cooling air relative to the volume of the water in both versions is not greater than the volume of the water so that the envelope or spray are substantially free of air.

Abstract: A dosing device of the type which can be implanted in a patient to control injection of liquids from a reservoir into the patient has an electrically controllable piston pump and a circuit responsible for controlling and monitoring the operation of the pump. The circuit includes a unit for acquiring a chronological curve representative of the piston motion, and electrical signals proportional thereto are obtained. These signals are supplied to control elements which compare these signals to prescribed rated values, and generate control and alarm signals given deviations of the incoming signals from the rated values.

Abstract: A medical catheter for intravascular long-term infusion of medication by an implanted or extracorporeal dosage device characterized by the catheter tube being of a single or multi-layer elastomer having a distal end shaped such that the exit opening for the medication is laterally arranged axially offset relative to the distal end of the catheter. The catheter is also coated with an external protective layer composed of a hydrogel.

Abstract: A reciprocating pump suitable for use in an implantable medication dosage device has a piston movable in a chamber connected to a medication reservoir, the chamber having an output closable by a check valve. The check valve includes a movable element which is acted upon by a biasing system to urge the moveable element in a direction to close the check valve. The moveable element has a sealing surface against which an end face of the piston presses with tight adjacency as the piston moves to an extreme position during its output stroke.

Abstract: The invention relates to an apparatus for the administration of medications. The apparatus includes a safety system which prevents a harmful overdose when the person using the apparatus is unable to take action. For this purpose, the safety system initiates a safety measure, (such as turning off the dosing unit, switching the dosing unit to a reduced administration rate (so called "emergency rate") and/or setting off an alarm) in the event that a checking procedure is not triggered by the patient within a predetermined time interval or after the administration of a specific quantity of medication. Starting times based on the time of day and generated by a master clock can be pre-pregrammed, for example, as a reminder to the patient to eat. In insulin therapy, the apparatus prevents a patient from becoming hypoglycemic as the result of a long lasting insulin overdose, for example, during sleep.

Abstract: An implantable measuring instrument for a body substance for use in controlling an implantable infusion device has a housing with a recess covered by a semi-permeable membrane which permits transfer of molecules of a selected size therethrough. The volume defined by the recess and the membrane is in communication with an expandable chamber in the housing and a channel leading directly or indirectly via an additional membrane to a sensor for the body substances to interest. The channel is also in communication with a pump. There is also provided another recess covered by a pierceable, resealable septum. A conduit leads from the septum to the sensor. For calibrating the instrument, a cannula is introduced through the septum, and all of the fluid in the conduit leading to the sensor is withdrawn by suction. A known calibrating substance is then introduced by the cannula through the septum until the conduit leading to the sensor is filled.

Abstract: Particularly for diabetes therapy, it is desirable to continuously infuse insulin in different rates into the body of the patient, because the insulin requirements of the diabetic are subject to great fluctuations. Therefore, a control device serves as the program transmitter for a microdosing unit. The control device for the microdosing unit has memory means for a prescribable control program allocated to it, whereby the control program can be called up directly by the patient at the control device. The program sequence of the infusion is started only by means of the dialing-up of a plurality of insulin units to be delivered into the body or of relevant food values taken in by the patient with a meal and of a starting time (T.sub.1, T.sub.2). In addition, specific base rates of the infusion can be selected by the patient. With the invention device, diabetes patients can call up the necessary insulin administration according to short programs at meals.

Abstract: The exemplary embodiments relate to a device housing implantable in the body and having a reservoir for the infusion of fluid and having a conveying and dosing unit for conveying the fluid from the reservoir to the discharge opening of a discharge catheter. In known devices of this type, the reservoir is held at a reference pressure which is lower in comparison to the pressure at the fluid discharge location in order, in case of a defect, to prevent fluid from flowing out. According to the present disclosure, pressure equalization between the inside space of the housing and the environment is effected for example by a hydrophobic or hydrophilic diaphragm with pores of a specific size or a diffusion diaphragm in combination with a pressure control valve in the wall of the device housing.

Abstract: An exemplary embodiment comprises a metering device which can be worn on the body or which is preferably implantable in the body, the metering device exhibiting a delivery unit for the dosed delivery of the fluid from a supply container to a discharge aperture of a catheter and also exhibiting an appertaining operating circuit, and an external control and programming device. The operating circuit in the metering device and the control circuit in the control device can be inductively coupled for operational signal transmission, to which end at least one transmission coil is present in the control device and at least one reception coil is present in the metering device. Given implanted devices, it is the object of the disclosure to guarantee the highest degree of patient security.

Abstract: Particularly for diabetes therapy, it is desirable to continuously infuse insulin in different rates into the body of the patient, because the insulin requirements of the diabetic are subject to great fluctuations. Therefore, a control device serves as the program transmitter for a microdosing unit. The control device for the microdosing unit has memory means for a prescribable control program allocated to it, whereby the control program can be called up directly by the patient at the control device. The program sequence of the infusion is started only by means of the dialing-up of a plurality of insulin units to be delivered into the body or of relevant food values taken in by the patient with a meal and of a starting time (T.sub.1, T.sub.2). In addition, specific base rates of the infusion can be selected by the patient. With the invention device, diabetes patients can call up the necessary insulin administration according to short programs at meals.