dental handpiece
dental handpiece
There are disclosed dental handpieces which comprises means at one end of the handpiece to mount a dental implement, a drive train arranged within the handpiece and extending to the implement-end in order to operate the dental equipment, a light source arranged within the handpiece, and a light guide extending from the light source to a position adjacent to the implement-end of the handpiece for directing light to a treatment region adjacent to the dental autoclave, the light guide being arranged within the handpiece and along side the drive train.
BRIEF DESCRIPTION OF THE PRIOR ART
A handpiece of the above general kind is known from German Gebrauchsmuster No. 69 40 204. In this known handpiece a fibre-optic light guide runs inside a flexible hose, which also contains media lines for water and/or air, from one supply member, which is arranged at the end of the handpiece remote from the tool, on the outside along the handpiece as far as the tool end of the handpiece. For the purpose of rendering possible a partially mutual torsion between handpiece and supply member the hose has a certain overlength. The picking-up and holding of the handpiece and also its handling in respect of the patient is made very difficult, in that the hose runs on the outside on the handpiece.
OBJECT OF THE INVENTION
The invention seeks to provide a dental high speed handpiece of the general kind referred to above i.e having a drive train extending within the handpiece, in which the arrangement of a light guide (which conveys light to a dental treatment region adjacent to the dental implement) is such that the curing light guide does not provide any hindrance or difficulties in manipulating the handpiece in service.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view of a first embodiment of dental handpieces according to the invention;
FIG. 2 is a section taken on the line II--II in FIG. 1;
FIG. 3 is a cutaway section of the handpiece according to FIG. 1 in a sectional plane twisted in respect of FIG. 1;
FIG. 4 is a sectional view of a modification to the embodiment of FIG. 1;
FIG. 5 is a section taken on the line V--V in FIG. 4; and
FIG. 6 is an enlarged illustration of the circled item VI in FIG. 5.
There are disclosed dental handpieces which comprises means at one end of the handpiece to mount a dental implement, a drive train arranged within the handpiece and extending to the implement-end in order to operate the dental equipment, a light source arranged within the handpiece, and a light guide extending from the light source to a position adjacent to the implement-end of the handpiece for directing light to a treatment region adjacent to the dental autoclave, the light guide being arranged within the handpiece and along side the drive train.
BRIEF DESCRIPTION OF THE PRIOR ART
A handpiece of the above general kind is known from German Gebrauchsmuster No. 69 40 204. In this known handpiece a fibre-optic light guide runs inside a flexible hose, which also contains media lines for water and/or air, from one supply member, which is arranged at the end of the handpiece remote from the tool, on the outside along the handpiece as far as the tool end of the handpiece. For the purpose of rendering possible a partially mutual torsion between handpiece and supply member the hose has a certain overlength. The picking-up and holding of the handpiece and also its handling in respect of the patient is made very difficult, in that the hose runs on the outside on the handpiece.
OBJECT OF THE INVENTION
The invention seeks to provide a dental high speed handpiece of the general kind referred to above i.e having a drive train extending within the handpiece, in which the arrangement of a light guide (which conveys light to a dental treatment region adjacent to the dental implement) is such that the curing light guide does not provide any hindrance or difficulties in manipulating the handpiece in service.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view of a first embodiment of dental handpieces according to the invention;
FIG. 2 is a section taken on the line II--II in FIG. 1;
FIG. 3 is a cutaway section of the handpiece according to FIG. 1 in a sectional plane twisted in respect of FIG. 1;
FIG. 4 is a sectional view of a modification to the embodiment of FIG. 1;
FIG. 5 is a section taken on the line V--V in FIG. 4; and
FIG. 6 is an enlarged illustration of the circled item VI in FIG. 5.