Abstract: A powder chamber, in particular for powder polishing devices, including a casing and two functional sectors, whereby the two functional sectors are arranged to be opposite to each other, and whereby at least one functional sector is designed to provide an opening for a working medium such as air or a mixture of powder and air, and whereby the two functional sectors are designed to allow the powder chamber to be locked. The two functional sectors are preferably arranged along an axis and are rotationally symmetric.

Abstract: A method for cleaning tooth surfaces with a powder and a powder mixture, preferably by powder blasting with a powder-jet device, said device mixing the powder or the powder mixture with air to form a powder/air mixture, wherein said powder and/or powder mixture is an alditol or contains such alditol. Preferably, mannitol and/or erythritol are used, because of their anti-cariogenic effect. Xylitol is also suitable for cleaning tooth surfaces, especially of less strongly mineralized tooth surfaces like dentine.

Abstract: In a device for introducing shock waves into a living body by way of at least one element (4; 12; 14) which transmits the shock waves and upon which shock pulses act, wherein at least one spring member (2) is used for generating the shock waves, a tensioning device is associated with the spring member and allows for an abrupt release of the spring member while delivering a shock pulse.

Abstract: A cleaning device, especially for cleaning clogged nozzles of dental devices, with a base body, which comprises a main channel, wherein the main channel is designed for the transport of a medium, especially a fluid, characterized in that the base body, at a first end, has a receiving zone, wherein the receiving zone is designed for the arrangement of another member, especially a clogged dental device, and in that the main channel has an access zone, through which the medium may be fed into main channel and/or the pressure thereof may be raised.

Abstract: A mixing device for a dental powder jet device, comprising a receptacle for receiving a powder, an inlet for a transport fluid, and an outlet for a powder/transport fluid mixture, the outlet comprising at least one outlet nozzle, the inlet comprising at least one first and at least one second inlet nozzles wherein the outflow direction of the first inlet nozzle intersects the inflow direction of the outlet nozzle, and wherein the outflow direction of the second inlet nozzle is arranged in an offset manner with respect to the outflow direction of the first inlet nozzle.

Abstract: The invention relates to an instrument for treating biological tissue, including a housing, in which is disposed a ballistic device for generating extracorporeal shock wave-like pressure waves and a transfer element permanently placed on the biological tissue, said element coupling the pressure waves into the body of living creatures, wherein the transfer element couples non-focused, ballistically generated, shock wave-like pressure waves into the biological tissue, the waves generated by a striking member that is accelerated to a high final velocity of over 5 m/s by a pneumatic medium which is under an operating pressure in a pressure channel. A quick-acting valve releases the pneumatic medium, which is under working pressure, into the pressure channel, wherein a control circuit controls the duration of opening of the valve as a function of at least one or a combination of the following parameters: working pressure, impact frequency or pressure in the back-pressure chamber.

Abstract: The mixing device for mixing a powder with a pressurized gas, comprising a mixing chamber (20) with an inlet area (22), which has at least one inlet opening (24), by way of which powder and/or pressurized gas and/or a mixture thereof may be introduced into the mixing chamber (20), and at least one outlet area (26), which is designed for withdrawing from the mixing chamber (20) a main flow (HR) of a gas or powder or a powder and gas mixture directed along the mixing chamber (20) which essentially extends from the inlet area (22) to the outlet area (26), characterized in that a regulating device (10) is arranged along and/or in continuation of the main flow (HR), regulating the main flow (HR) of the gas or powder or powder and gas mixture.

Abstract: The present invention relates to an operating element and a method of inputting values into a medical apparatus (1), having a touch-sensitive sensor (19) and an operating surface (22), the sensor (19) being mounted below a cover (20) forming the operating surface (22), which detects the presence or absence of an operating means (11) and generates a contact value (17). A display (14) of the operating element shows a current value (16), which is variable by means of the contact value (17) of the sensor (19) to a value (15) to be set. Advantageously, the current value (16) can be varied by means of contact of the operating surface (22) to any point or to a point which corresponds to the value (15) to be set, respectively depending on the manner of contact of the operating surface (22).

Abstract: The invention relates to a device for measuring fluorescent radiation emitted by biological substances, comprising a light source, a capturing unit, an evaluation unit, at least one emission fiber, and at least one detection fiber. Said emission fiber guides excitation radiation to the biological substrate and the detection fiber receives fluorescent radiation and guides it to the evaluation unit. The capturing unit comprises a semiconductor sensor arrangement that detects fluorescent radiation emitted by the biological substance in wave length areas that are separate from each other, are arranged. Data sets of at least two different reference measurements on at least two different biological substances are stored and compared to the measured measurement values to the stored data sets and issues a result relating to the pathological attacks of the examined biological substances and/or relating to the type of examined, biological substances.

Abstract: The invention relates to a device for detecting signs of bacterial infection of teeth, comprising a light source, a receiving unit, an evaluation unit, coupled to the receiving unit, at least one emission fiber, coupled to the light source, and at least one detection fiber, coupled to the receiving unit. The invention is characterized in that both the emission and detection fiber have an acceptance angle of more than 35°.

Abstract: The invention relates to a device for detecting signs of bacterial infection of teeth, comprising a light source, a receiving unit, an evaluation unit, coupled to the receiving unit, at least one emission fiber, coupled to the light source, and at least one detection fiber, coupled to the receiving unit. The invention is characterized in that the common distal front face of the at least one emission fiber and the at least one detection fiber is connected to a front face of a flexible plastic optical wave guide, the diameter of the plastic optical wave guide being less than 400 ?m, preferably less than 300 ?m.

Abstract: The invention relates to an instrument for treating biological tissue, including a housing, in which is disposed a ballistic device for generating extracorporeal shock wave-like pressure waves and a transfer element permanently placed on the biological tissue, said element coupling the pressure waves into the body of living creatures, wherein the transfer element couples non-focused, ballistically generated, shock wave-like pressure waves into the biological tissue, the waves generated by a striking member that is accelerated to a high final velocity of over 5 m/s by a pneumatic medium which is under an operating pressure in a pressure channel. A quick-acting valve releases the pneumatic medium, which is under working pressure, into the pressure channel, wherein a control circuit controls the duration of opening of the valve as a function of at least one or a combination of the following parameters: working pressure, impact frequency or pressure in the back-pressure chamber.

Abstract: Disclosed is a medical instrument for treating biological tissue, comprising a device generating extracorporeal pressure waves and a transmission element (2) coupling said pressure waves into the body of living beings. The pressure wave is generated by a stroking member (10) impacting on a transmission element (2) and is transmitted inside the transmission element. Said transmission element comprises a boundary surface at the outlet thereof, which is curved towards the inside and is configured such that the pressure waves can be coupled into the biological tissue and can be focused therein.

Abstract: A powder blast tool for mixing a powder with a pressurised gas, having at least one powder reservoir, with supply lines for the pressurised gas, and a discharge line, which is connected to a discharge nozzle, at which a powder-gas mixture and optionally pressurised water are discharged, wherein the powder blast tool can preferably be connected to plural powder reservoirs simultaneously and exchangeably, wherein at least one receiving region with at least one mixture terminal and at least one gas terminal is disposed on the powder blast tool and wherein the powder reservoir has a coupling region for exchangeable connection of the powder reservoir to the powder blast tool. Also disclosed are a suitable powder reservoir and an insert for such powder reservoirs and a corresponding method of dental treatment.

Abstract: The invention relates to a device for detecting signs of bacterial infection of teeth, comprising a light source (18), a receiving unit (16), an evaluation unit (20), coupled to the receiving unit (16), at least one emission fiber (12), coupled to the light source (18), and at least one detection fiber (14), coupled to the receiving unit (16). The invention is characterized in that the common distal front face of the at least one emission fiber (12) and the at least one detection fiber (14) is connected to a front face of a flexible plastic optical waveguide (1), the diameter of the plastic optical waveguide (1) being less than 400 ?m, preferably less than 300 ?m.