The present invention relates to a cutting device (1) for surgical or dental use, comprising a motor (10) connected to a handpiece (4) provided with a transmission module (2) for a cutting tool (3), the transmission module (2) comprising: a motor coupling part arranged to be set in rotation by the said motor (10); a kinematic chain transforming the rotary movement of the motor (10) into a first linear reciprocating movement (M1) of a blade holder (27) via a rotary transmission shaft (22) provided with an eccentric (23), the transmission module (2) being characterized in that it further comprises a counter-mass (5) arranged so as to move according to a second linear reciprocating movement (M2) synchronized with the first linear reciprocating movement (M1) of the blade holder (27), and in the opposite direction to the latter.

The high-speed turbine dental handpiece adapted for single safe use comprises a nose, a handle connected to the rear end of the nose, a plug connector disposed at the rear end of the handle, and a clip ring for fixing the handle and the plug connector, wherein the plug connector is provided with a first fixing slot at a side wall, the tail end of the handle is provided with a second fixing slot matched with the first fixing slot, the inner wall of the clip ring is provided with bumps matched with the first fixing slot and the second fixing slot, and when the clip ring is hooped on the plug connector, the bumps are embedded into the first fixing slot and the second fixing slot to limit and fix the handle and the plug connector. The invention effectively prevents the disposable dental handpiece from being reused in various ways, it is simple in structure and convenient to detach and thus can be conveniently detached and destroyed after being used, and in addition, with the disposable light-emitting component, whether the dental handpiece is used can be identified simply and clearly. According to the inventor, the concept of one handpiece for one patient for single use as advocated by the WHO in the field of oral health can be achieved, effectively solving the problem of iatrogenic cross infection in the field of stomatology. The invention is similar to a disposable syringe but with a more complex structure as a dental handpiece.

The high-speed turbine dental handpiece adapted for single safe use comprises a nose, a handle connected to the rear end of the nose, a plug connector disposed at the rear end of the handle, and a clip ring for fixing the handle and the plug connector, wherein the plug connector is provided with a first fixing slot at a side wall, the tail end of the handle is provided with a second fixing slot matched with the first fixing slot, the inner wall of the clip ring is provided with bumps matched with the first fixing slot and the second fixing slot, and when the clip ring is hooped on the plug connector, the bumps are embedded into the first fixing slot and the second fixing slot to limit and fix the handle and the plug connector. The invention effectively prevents the disposable dental handpiece from being reused in various ways, it is simple in structure and convenient to detach and thus can be conveniently detached and destroyed after being used, and in addition, with the disposable light-emitting component, whether the dental handpiece is used can be identified simply and clearly. According to the inventor, the concept of one handpiece for one patient for single use as advocated by the WHO in the field of oral health can be achieved, effectively solving the problem of iatrogenic cross infection in the field of stomatology. The invention is similar to a disposable syringe but with a more complex structure as a dental handpiece.

A handle system for supporting a tool defining a tool axis during the performance of dental procedures comprises a handle defining a handle axis, a rotation sleeve, a head assembly and a gear set comprising first and second gear portions. The rotation sleeve supports the first gear portion. The head assembly supports the second gear portion. The handle supports the rotation sleeve for rotation relative to the handle. The handle supports the head assembly such that the first gear portion engages the second gear portion. With the head assembly supported by the handle, the head assembly engages the tool to support the tool such that the tool axis extends at a first angle relative to the handle axis and rotation of the rotation sleeve relative to the handle causes axial rotation of the tool about the tool axis.

The present invention relates to a hand operated dental instrument that allows a user to manually operate tool bits that are ordinarily operated by a power operated tool. Then invention includes a handle that carries a shaft; a bore-hole extending through at least a portion of the shaft for receiving a tool bit; an elevated stop disposed in the bore-hole for engaging at least a portion of a tool bit that is inserted into the bore-hole; a securing ring receiving slot disposed in the shaft and is in fluid communication with the bore-hole; and a securing ring that when placed in the securing ring receiving slot presses at least a portion of the tool bit towards the elevated stop so that when the shaft is rotated, the tool bit rotates.

A dual-ended triple tooled dental applicator apparatus, comprising a plurality of tools with interchangeable dental tool applicators. The dental apparatus further comprises an elongated handle having two distinct tools on both ends and being detachable and interchangeable. During procedures, the dentist can alternate between both ends of the apparatus and among three dental tool applicators. A set of overlapping and circumferential friction enhancement means, along and about the apparatus, facilitate safe and effective handling during procedures. The multi-functioned dental apparatus is comprised of a lightweight but rigid material (e.g., plastic), which allows the dentist to efficiently use the same tool for working with and applying different materials to a patient's teeth. Upon completion of a given procedure, the entire device may be readily disposable.

A dual-ended triple tooled dental applicator apparatus, comprising a plurality of tools with interchangeable dental tool applicators. The dental apparatus further comprises an elongated handle having two distinct tools on both ends and being detachable and interchangeable. During procedures, the dentist can alternate between both ends of the apparatus and among three dental tool applicators. A set of overlapping and circumferential friction enhancement means, along and about the apparatus, facilitate safe and effective handling during procedures. The multi-functioned dental apparatus is comprised of a lightweight but rigid material (e.g., plastic), which allows the dentist to efficiently use the same tool for working with and applying different materials to a patient's teeth. Upon completion of a given procedure, the entire device may be readily disposable.

A set of osteotomes have conical tips with free end diameters alternately increasing by a constant increment, k, as a step function, beginning with the first osteotome; and working base diameters alternately increases by a constant increment, C, as a step function, beginning with the second osteotome. For seven osteotomes, the first and second diameters respectively are: 1 mm and 2 mm; 1 mm and 3 mm; 2 mm and 3 mm; 2 mm and 4 mm; 3 mm and 4 mm; 3 mm and 5 mm; and 4 mm and 5 mm. In a first mode all seven osteotomes are used to provide very gradual diameter escalations. In a second mode the first, third, fifth, and seventh osteotomes provide conventional Summers' diameter escalations. In third and fourth modes the first, fourth, and seventh osteotomes, and the second, fifth, and seventh osteotomes respectively provide increasingly more aggressive Summers' type escalations.

A set of osteotomes have conical tips with free end diameters alternately increasing by a constant increment, k, as a step function, beginning with the first osteotome; and working base diameters alternately increases by a constant increment, C, as a step function, beginning with the second osteotome. For seven osteotomes, the first and second diameters respectively are: 1 mm and 2 mm; 1 mm and 3 mm; 2 mm and 3 mm; 2 mm and 4 mm; 3 mm and 4 mm; 3 mm and 5 mm; and 4 mm and 5 mm. In a first mode all seven osteotomes are used to provide very gradual diameter escalations. In a second mode the first, third, fifth, and seventh osteotomes provide conventional Summers' diameter escalations. In third and fourth modes the first, fourth, and seventh osteotomes, and the second, fifth, and seventh osteotomes respectively provide increasingly more aggressive Summers' type escalations.

The present invention relates to a hand operated dental instrument that allows a user to manually operate tool bits that are ordinarily operated by a power operated tool. Then invention includes a handle that carries a shaft; a bore-hole extending through at least a portion of the shaft for receiving a tool bit; an elevated stop disposed in the bore-hole for engaging at least a portion of a tool bit that is inserted into the bore-hole; a securing ring receiving slot disposed in the shaft and is in fluid communication with the bore-hole; and a securing ring that when placed in the securing ring receiving slot presses at least a portion of the tool bit towards the elevated stop so that when the shaft is rotated, the tool bit rotates.