摘要:
The invention relates to a dental handpiece (1) of the type comprising mechanical components, in particular a tool-holder assembly for the attachment and rotational driving of a dental instrument about a drive axis (6) and an assembly for the transmission of movement, said mechanical components being mounted in the interior of a body (2) having a head (4) and a handle (3), characterized in that it comprises means of electrical connection between the mechanical components of the handle and the head of the instrument, which means are constituted by an elastic and electrically conducting connecting device.
摘要:
A dental handpiece (1) includes mechanical components, in particular, a tool-holder assembly for the attachment and for the rotational driving of a dental instrument about a drive axis (6) and an assembly for the transmission of such movement. The mechanical components are mounted in the interior of a body (2) having a head (4) and a handle (3). The mechanical components of the handle and the head of the handpiece are electrically connected by an elastic and electrically conducting connecting device.
摘要:
The invention relates to a contra-angle for implantology or surgery with a head for holding and rotating an instrument about its longitudinal axis, and a handpiece containing, in a non-limiting manner, a connection providing the connection with an external motor drive, and a reducing assembly with an output gear. The contra-angle is formed of removable subassemblies, and principally of a subassembly called the intermediate support, including an input gear meshing with the output gear of the reducing assembly and an end gear mounted on the same rotating shaft and inside a hollow cylindrical body. The intermediate support is mounted so as to slide freely along an axis inside a central part of a head body and enabling positioning in the head and rotational driving of a removable head cartridge, when all the subassemblies are mounted together to form the contra-angle.
摘要:
The cutting shank of an instrument to be received in the head of a contra-angle of a dentistry handpiece is clamped in position with a pushed-button control device which is displacable counter to a tensioning spring. The control device generally takes the form of at least one reversal element for receiving pressures responsive to movements of the push-button and for converting such movements into a traction movement exerted by the reversal element on the pusher which is used to control the collet chuck which receives the shank of the instrument.
摘要:
A hand-held implement for removing dental scale provided with a rigid shaft to which is applied vibrations in a rotational or circumferential direction by a dynamically unbalanced air driven turbine. The rotor of the turbine is coupled to the shaft by a bearing and the shaft is restrained from rotating and restrained axially. Provision is made for supplying cooling water through the shaft to a dental scale removing tool mounted on a free end of the vibrated shaft.
摘要:
A piece of mechanized surgical equipment is provided, which includes an instrument holder having an element for receiving and retaining a surgical instrument for mechanized use. Also provided is a surgical instrument for mechanized use and configured to be mounted on the instrument holder. The element for receiving and retaining is mobile between an unlocking position, in which the element enables insertion of the instrument into the instrument holder or withdrawal thereof, and a locking position, in which the element prevents the withdrawal of the instrument from the instrument holder. Furthermore, the equipment includes a case in which an active blade of the instrument can be removably housed, the case having an engaging element for engaging with the receiving and retaining element so as to cause the element to move from the unlocking position to the locking position, or vice versa.
摘要:
A head assembly for attaching to a dental instrument has a body, a rotary shaft with a pinion thereon, at least one retractable catch latching lever and a retractable catch. The rotary shaft has a central bore suitable for receiving a shank of the dental instrument therein. The latching lever has a peg engageable with an annular latching groove of the shank of the dental instrument. The catch has a positioning plane coinciding with the drive flat of the instrument. The body has a circular opening closed off by a push button cooperative with the rotary shaft so as to release the shank of the dental instrument.
摘要:
The invention relates to a device for holding a dental instrument in the head of a contra-angle, an instrument of the type comprising, in its upper part which is inserted into the head of the contra-angle, a lateral flat for rotating it and an annular groove for axially retaining it, characterized in that the shank receiving the handle of the instrument, comprises a transverse cutback (7d), offset with respect to the longitudinal axis (7e) of the shank, made in the end of the shank and emerging in the bore (7b), the width (1) of the cutback being such that it allows the handle of the instrument to be engaged so that, on the one hand, the lateral flat of the handle is in contact with the wall (7f) of the cutback, closest to the longitudinal axis (7c), so as to ensure rotational coupling, and that, on the other hand, the shoulder of the flat of the handle abuts against the bottom (7c) of the longitudinal bore (7b) of the shank, in order to act as an axial stop in the direction of insertion.Preferably, the device is in the form of a cartridge comprising, already assembled, a shank (7), a shank bearing (10), a resilient ring (8), a push-button (13) with a spring (12), and optionally a ball bearing (11).
摘要:
Atomizing process and device for dentistry handpieces or angle pieces, characterized in that it involves generating, in the region of the receptacle of the tool in the handpiece or angle piece, a suction effect putting the vicinity of the cutter receptacle under a slight vacuum under the effect of an air cone of which the apex is situated at the point where the tool is working, the other function of this air cone being to direct the cooling fluid by means of an effect of the COANDA type, thereby reducing the consequences of turbulences attributable to the rotation of the tool or instrument.
摘要:
The invention relates to an endodontic instrument used for working on a canal in a tooth, having a base from which an active portion for working on the canal extends longitudinally, characterized in that said active portion has at least one slot extending longitudinally and forming a passage for fluid.