摘要:
The invention relates to a maintenance apparatus (1) for medical or dental handpieces (17), having a housing (2), which encloses a free maintenance chamber (4) which is accessible by means of a door (5), having a plurality of connection parts (16a, 16b) in the maintenance chamber (4) each for receiving the rearward end of a handpiece (17), having a supply line (18) for a maintenance medium, which branches with supply line branches (18a) to the connection parts (16a, 16b), which branches open out each at a mouth opening (16a1, 16b1) at the associated connection part (16a, 16b), which stands in connection with a drive channel of the connected handpiece (17), having a supply system for supplying the maintenance medium to the connection parts (16a, 16b) and having a control device (51) for control of the supply system, whereby a sensor (S2a to S2d) is associated with each connection part (16a, 16b, 16c), which sensor is activated by means of the handpiece (17) connected with the associated connection part and emits a signal to the control device (51), and whereby the supply system supplies the maintenance medium only to the connection parts (16, 16b, 16c) which are connected with a handpiece (17). For the purpose of ensuring an adequate supply of maintenance medium, the supply system supplies the maintenance medium to the connection parts (16a, 16b, 16c) one after another.
摘要:
A surface disinfectant and cleaning composition includes (a) a biocidal agent selected from the group consisting of glyoxal, glutaraldehyde, and mixtures thereof, (b) 0.001 to 1% by weight of a fluoroaliphatic tenside selected from the group consisting of perfluoroalkanoic acids wherein the alkane residue has 1 to 10 carbon atoms, alkali and ammonium salts thereof, and mixtures thereof, (c) 0.002 to 5% by weight of at least one ultraviolet absorber, (d) 0.001 to 3% by weight of an optical brightener selected from the group consisting of benzotriazole derivatives, stilbene disulfonic acid derivatives, and mixtures thereof, and (e) a solvent selected from the group consisting of water, water-soluble alcohols, and mixtures thereof, and having a pH value of 2.5 to 5.0.
摘要:
A dental handpiece comprising a holding sleeve, a head sleeve inclined to the holding sleeve and adapted to mount a dental instrument, a connecting zone providing an interconnection between the holding sleeve and the head sleeve, a drive shaft housed mainly within the holding sleeve and a driven shaft housed within the head sleeve, and a ball-type planetary transmission housed within the connecting zone and serving to transmit drive between the drive shaft and the driven shaft. The drive shaft is sub-divided into a first shaft portion which is housed in the holding sleeve, and a second shaft portion which is housed within the connecting zone and coupled with the planetary transmission. The second shaft portion extends coaxially with the driven shaft in the head sleeve, and the first and second drive shaft portions are coupled together by a rotary-drive-transmitting coupling.
摘要:
A dental handpiece or elbow having a guide sleeve for mounting a dental treatment tool, in which the inner annular surface of the guide sleeve is coated with a wear-resistant coating so as to enhance the strength thereof against hammering and radial forces generated during use of the handpiece. In the case where the sleeve is connected to the tool through the intermediary of a collet, the latter is also provided with a similar coating in at least the regions in contact with the guide sleeve.
摘要:
A dental handpiece having a sleeve, an axial drive shaft in the sleeve for driving a dental instrument at one end of the handpiece, a first coolant supply line in the handpiece, a second coolant supply line extending axially towards the dental instrument, and a coolant duct in the wall of the sleeve which intercommunicates the first and second coolant lines. The coolant duct extends rectilinearly and generally radially between an inner end which faces the interior of the sleeve and which communicates with the first coolant line, and an outer end which communicates with and is releasably connected to the second line at a location in the wall of the sleeve and which permits manipulation externally of the handpiece for releasing and connecting the duct and the second line.
摘要:
A dental handpiece in which supply lines run axially inside a longitudinal sleeve. This sleeve and the supply lines are divided transversely to form several handpiece sections. Each one of two facing ends of two adjacent handpiece sections have an axially projecting sleeve into which the end of the other handpiece section can be inserted. Two ends of the adjacent handpiece sections have a screw thread each. The thread may be an inside thread of the projecting sleeve forming a pipe-stub or nipple like threaded portion of the end inserted in the sleeve of the other handpiece section. One of the two pipe-stub like threaded portions has at least one cutout extending axially from its free end and is radially spring-like pretensioned in the unthreaded state of the two adjacent handpiece sections away from the other threaded portion with threads not engaged. This one of two pipe-stub like threaded portions, furthermore is rotatable relative to one engaging portion of the handpiece section which has a threaded portion with at least one cutout about an axis of the latter.
摘要:
A dental handpiece comprises a holding sleeve, a head sleeve connected to the holding sleeve for mounting a dental instrument, a connecting zone providing an interconnection between the holding sleeve and the head sleeve, a two-part drive shaft housed within the handpiece, a first part of the shaft being arranged within the holding sleeve and a second part of the shaft being arranged within the head sleeve, and a ball-type planetary transmission housed within the connecting zone and providing a drive connection between the first and second parts of the shaft. The handpiece may be a straight handpiece or the head sleeve may be inclined to the holding sleeve to provide an angled handpiece.
摘要:
Method and device for the detection of caries in teeth (8). In order, after investigation of a tooth (8), to be able again to find the tooth location with the greatest incidence of caries, the instantaneous measurement value and the peak measurement value--which corresponds to the location with the greatest incidence of caries attack--are displayed. By comparison of the instantaneous measurement value with the peak measurement value the tooth location with the greatest incidence of caries attack can be localised when the instantaneous measurement value coincides with the peak measurement value.
摘要:
In a process for the curing of light-sensitive polymeric compositions by irradiation with light of wavelength suited to the polymeric composition it is proposed that the irradiation be carried out with a light intensity increasing continuously or in stepped form. An apparatus for carrying out said process is further proposed in which the raising of the light intensity is controlled during an irradiation procedure by a control unit (13).
摘要:
An arrangement for the dispensing of cleaning and/or lubricating media, which can be placed under pressure in a receptacle, as maintenance media to movable elements containing medical, and particularly dental handpieces. The maintenance medium is forced by means of a pressure drive out of a dispensing orifice of the receptacle through an inlet opening of the handpiece which is attached to the receptacle at the dispensing orifice and whereby, during the forcing of the maintenance medium into the movable elements of the handpiece, they are placeable into motion through a motion drive. The maintenance medium can be formed by liquid cleaning and/or lubricating media, for instance, such as oil. The arrangement of a separate power source, for the motion drive and for the pressure drive, in a simple and economical manner facilitates the motion drive as well as the pressure drive to be supplied with the required energy in a completely targeted manner by the current power source for a secure operation, so that neither the forcing out of the maintenance medium nor the action of the motion drive on the movable components of the handpiece are adversely influenced in any manner or could even be inhibited.