Angulated attachment device for dental prostheses

Abstract

The present invention relates an angulated ball attachment device which is deployed such that the ball component is off-set from the central axis of the implant. The ball component and the abutment base element form a single rigid unit that is stable even in case the attachment screw of the device becomes loosened.

1 . A device for detachable off-axis attachment of a dental prosthesis comprising:
 (a) a bone anchoring arrangement having an axis of insertion into the bone and including a rotation prevention configuration shaped to engage the bone so as to prevent rotation of the device about said axis; and   (b) an attachment configuration configured for detachable connection of a dental prosthesis, said attachment configuration being located off-axis relative to said axis of insertion,   
     wherein said attachment configuration and said rotation prevention configuration are integrally formed or permanently attached so as to be in non-adjustable spatial relation. 
   
   
       2 . The device of  claim 1 , wherein said attachment configuration includes a ball. 
   
   
       3 . A kit for detachable off-axis attachment of a dental prosthesis comprising two devices each according to  claim 1 , wherein said rotation prevention configuration has 6-fold rotational symmetry, and wherein:
 (a) a first of said devices has said attachment configuration located off-axis at a first angular position relative to said rotation prevention configuration; and   (b) a second of said devices has said attachment configuration located off-axis at a second angular position relative to said rotation prevention configuration, said second angular position being rotated about said axis by an angle of substantially 30 degrees.   
   
   
       4 . The kit of  claim 3 , wherein said attachment configuration includes a ball. 
   
   
       5 . A device for connecting a ball to a bone implant comprising:
 an abutment element and a ball, said abutment element is at least partially inserted inside said bone implant, said ball is permanently connected in fixed spatial relation to said abutment element so as to maintain their connection in case the connection of said abutment element to said bone implant is loosened, said ball is located such that the central long axis of said bone ball is displaced from central long axis of said bone implant.   
   
   
       6 . The device of  claim 5 , wherein the angle between the central long axis of said bone implant and said central long axis of said ball is between 0 to 90 degrees. 
   
   
       7 . The device of  claim 6 , wherein said angle is 15 to 45 degrees. 
   
   
       8 . The device of  claim 5 , wherein said long axis of said ball is parallel said long axis of bone implant so said ball is displaced from the center of said bone implant. 
   
   
       9 . The device of  claim 5 , wherein at least part of said ball is above the internal thread of the implant. 
   
   
       10 . The device of  claim 5 , wherein said abutment element has an anti-rotational element to be engaged with an anti-rotational element of said bone implant. 
   
   
       11 . The device of  claim 10 , wherein said anti-rotational element of said abutment element is in the shape of hexagon. 
   
   
       12 . The device of  claim 11 , wherein said ball is located above one plane of said hexagon. 
   
   
       13 . The device of  claim 11 , wherein said ball is located above one corner of said hexagon. 
   
   
       14 . The device of  claim 5  wherein the height of said abutment element is between 0.5 mm to 6 mm. 
   
   
       15 . The device of  claim 5 , wherein said abutment element is angulated. 
   
   
       16 . The device of  claim 15 , wherein said ball is located more displaced from the axis of the implant than said abutment element. 
   
   
       17 . The device of  claim 15 , wherein said ball is located less displaced from the axis of the implant than said abutment element. 
   
   
       18 . The device of  claim 5 , wherein said ball is soldered to said abutment element. 
   
   
       19 . The device of  claim 5 , wherein said ball and said abutment element are one piece which is milled by a C.N.C machine. 
   
   
       20 . The device of  claim 5 , wherein said ball and said abutment element are casted together. 
   
   
       21 . The device of  claim 5 , wherein said ball is screwed to said abutment element. 
   
   
       22 . The device of  claim 5 , wherein said ball is glued to said abutment element. 
   
   
       23 . The device of  claim 5 , wherein said abutment element is fixated by a screw to said bone implant. 
   
   
       24 . The device of  claim 5 , wherein said abutment element is fixated by a rotating fixating nut to said bone implant. 
   
   
       25 . The device of  claim 5 , wherein said abutment is fixated by friction to said bone implant.