Saliva suction device

1 . A saliva suction device comprising

a plastic injection-molded part configured with a coupling for connection to a suction hose, the plastic injection-molded part configured to be plugged onto the suction hose or connected to the suction hose, the plastic injection-molded part having a first suction channel extending through it,

a lingual shield integral or part of the plastic injection molded part,

a non-porous, soft body plugged on or at the plastic injection-molded part and connected to the injection-molded part in a form-fitting manner, and having a second suction channel that is vertically offset relative to the first suction channel and which second suction channel is fabricated of a non-porous material,

wherein on a side of the second suction channel, which is opposite the first suction channel, a suction area with at least one suction opening for saliva is configured in the soft body,

wherein there is a recess between the lingual shield and the non-porous soft body,

wherein the lingual shield extends along a concave upper side of the curved soft body and is spaced apart from the curved soft body by less than 8 mm, and comprises a curved edge following the course of the curved soft body, and

wherein the soft body protrudes beyond the lingual shield at a distal end.

2 . The saliva suction device as claimed in claim 1 ,

wherein a first axis of the first suction channel is configured to extend coaxially to the suction hose and

wherein a second axis of the second suction channel extends in an offset manner in the direction pointing away from the lingual shield,

wherein the second axis is either curved or not curved.

3 . The saliva suction device as claimed in claim 1 ,

wherein the second suction channel comprises a longitudinal oval or egg-shaped cross-section, with a height which is more than twice a width.

4 . The saliva suction device as claimed in claim 1 ,

wherein the soft body is flexible at a modulus of elasticity of less than 1 GPa, and has an average wall thickness larger than a wall thickness of the plastic injection-molded part.

5 . The saliva suction device as claimed in claim 1 ,

wherein the soft body is bent in a relaxed state and has a convex side and a concave side, the convex side on the bottom side and the concave side on the upper side, and

wherein the at least one suction opening is configured on the convex side.

6 . The saliva suction device as claimed in claim 1 ,

wherein the curved soft body comprises slits as suction openings on a convex side which extend transversely to the bending radius of the soft body and extend over the entire, or substantially entire, convex side of the soft body.

7 . The saliva suction device as claimed in claim 1 ,

wherein the curved soft body comprises slits as suction openings on a convex side which are closable by straightening the soft body.

8 . The saliva suction device as claimed in claim 1 ,

wherein the at least one suction opening in the soft body comprises a plurality of slits as suction openings and in extension thereof a plurality of smaller, in comparison to the size of the plurality of slits, suction openings or holes adjacent to each slit, and

wherein at least one arrangement of a slit and at least one of the adjacent smaller suction openings forms a predetermined breaking point.

9 . The saliva suction device as claimed in claim 1 ,

wherein the soft body is dimensionally stable at a negative suction pressure of between 80 mbar and 250 mbar of the saliva suction device.

10 . The saliva suction device as claimed in claim 1 ,

wherein the second suction channel forms a hollow chamber closed on all sides except for the suction openings and an outlet opening toward the injection-molded part, which is under negative pressure when the saliva suction device is operated.

11 . The saliva suction device as claimed in claim 1 ,

wherein the first and/or second suction channel is configured to have a larger cross-section than the suction hose.

12 . The saliva suction device as claimed in claim 1 ,

wherein the lingual shield extends in extension of a vertically oval or elliptical cross-section of the second suction channel.

13 . The saliva suction device as claimed in claim 1 ,

wherein the second suction channel comprises a substantially constant cross-section over a longitudinal extension up to an outlet opening towards the plastic injected-molded part, said cross-section is configured to be larger than an area of the suction hose.

14 . The saliva suction device as claimed in claim 1 ,

wherein the soft body comprises a profile structure with ribs or projections on a side opposite the lingual shield, with a substantially equal profile height over the course of the side.

15 . The saliva suction device as claimed in claim 14 ,

wherein the ribs or projections on the profile structure comprises a height selected from more than 0.2 mm and approximately 0.5 mm, and

wherein the suction openings of the suction area end at the base of the profile structure such that if the profile structure comes into contact with tissue, the profile structure prevents the suction opening from being blocked by the tissue.

16 . The saliva suction device as claimed in claim 1 ,

wherein the plastic injected-molded part with the coupling is rotatable with respect to the suction hose.

17 . The saliva suction device as claimed in claim 1 ,

wherein the suction hose comprises an integrated wire receiving device for receiving a plastically deformable wire which ends at the plastic injection-molded part for connecting the wire therewith.

18 . The saliva suction device as claimed in claim 1 ,

wherein the soft body comprises at least one suction opening in the form of a slit, on an upper side adjacent to the lingual shield.

19 . The saliva suction device as claimed in claim 1 ,

wherein the lingual shield comprises a film hinge for configuring a joint with a joint axis along a longitudinal extension of the lingual shield.

20 . The saliva suction device as claimed in claim 1 ,

wherein the soft body can be separated from the plastic injection-molded part and replaced, and

wherein the combination of suction hose and plastic injection-molded part is autoclavable.

21 . The saliva suction device as claimed in claim 1 ,

wherein the plastic injection-molded part is coupled to the suction hose via an adapter.

22 . The saliva suction device as claimed in claim 1 ,

wherein the soft body is flexible at a modulus of elasticity of less than 100 MPa, and has an average wall thickness larger than a wall thickness of the plastic injection-molded part.

23 . The saliva suction device as claimed in claim 1 ,

wherein the soft body has a degree of hardness between 5 and 75 Shore A.

24 . The saliva suction device as claimed in claim 1 ,

wherein the plastic injection-molded part has a degree of hardness between 40 and 80 Shore D.

25 . A saliva suction device comprising

a plastic injection-molded part configured with a coupling for connection to a suction hose, the plastic injection-molded part configured to be plugged onto the suction hose or connected to the suction hose, the plastic injection-molded part having a first suction channel extending through it,

a lingual shield integral or part of the plastic injection molded part,

a non-porous, soft body plugged on or at the plastic injection-molded part and connected to the injection-molded part in a form-fitting manner, and having a second suction channel that is vertically offset relative to the first suction channel and which second suction channel is fabricated of a non-porous material,

wherein on a side of the second suction channel, which is opposite the first suction channel, a suction area with at least one suction opening for saliva is configured in the soft body,

wherein there is a recess between the lingual shield and the non-porous soft body,

wherein the at least one suction opening in the soft body comprises a plurality of slits as suction openings and a plurality of smaller, in comparison to the size of the slits, suction openings or holes adjacent to each slit, and

wherein at least one arrangement of a slit and at least one of the adjacent smaller suction openings forms a predetermined breaking point.