Implant, and tightening member and spacer member for such an implant
First Claim
1. An implant which can cooperate with an installation tool and spacer member and which is arranged with an internal recess which extends from the upper parts of the implant and opens upward (outward), the recess being arranged with first tracks and/or ridges which, seen in the cross section of the recess, extend outward from the main periphery of the recess, in which first surfaces of said first tracks and/or ridges can cooperate with corresponding (opposite) second surfaces on second ridges and/or tracks arranged on the tightening member characterized in that at least some of the first and second surfaces are arranged to extend substantially parallel in the radial directions of the recess under a rotational action on the implant by means of the tightening member, in that the first tracks and/or the ridges are arranged to cooperate with third ridges and/or tracks on the spacer member upon mutual cooperation of the implant and of the spacer member, and in that the first tracks or the ridges are arranged to give the spacer member substantial freedom from clearance or a substantially defined position in relation to the implant in the direction(s) of rotation.
2 Assignments
0 Petitions
Accused Products
Abstract
An implant (1) which can be cooperate with an installation tool (24) and a spacer member (25, 26) and which is arranged with an internal recess which extends from the upper parts of the implant and opens upward, the recess being arranged with first tracks (5) and/or ridges which, seen in cross section of the recess, extend outward from the main periphery (3) of the recess, in which first surfaces (5a) of said first tracks (5) and/or ridges can cooperate with corresponding (opposite) second surfaces (8a) on second ridges (8) and/or tracks arranged on the tightening member (24).
35 Citations
24 Claims
- 1. An implant which can cooperate with an installation tool and spacer member and which is arranged with an internal recess which extends from the upper parts of the implant and opens upward (outward), the recess being arranged with first tracks and/or ridges which, seen in the cross section of the recess, extend outward from the main periphery of the recess, in which first surfaces of said first tracks and/or ridges can cooperate with corresponding (opposite) second surfaces on second ridges and/or tracks arranged on the tightening member characterized in that at least some of the first and second surfaces are arranged to extend substantially parallel in the radial directions of the recess under a rotational action on the implant by means of the tightening member, in that the first tracks and/or the ridges are arranged to cooperate with third ridges and/or tracks on the spacer member upon mutual cooperation of the implant and of the spacer member, and in that the first tracks or the ridges are arranged to give the spacer member substantial freedom from clearance or a substantially defined position in relation to the implant in the direction(s) of rotation.
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22. A tightening member (installation tool) for an implant which at its upper or outer end has a recess extending down in the implant, at whose wall there are arranged, extending between the inside of the recess and the outside of the implant, first tracks and/or ridges with first surfaces coinciding with the radius of the recess or one or more lines or planes parallel with the radius, wherein the tightening member is arranged with second ridges and/or tracks which have second surfaces which, upon a rotational movement of the tightening member relative to the implant, can be set substantially parallel to the first surfaces and wherein upon said rotational action, the force of rotation or forces of rotation caused by the second ridges and/or tracks is/are substantially at right angles to the first surfaces.
- 23. A spacer member for implant which at its upper parts or outer end has a recess which extends down in the implant and at whose wall there are arranged, extending between the inside of the recess and the outside of the implant, first tracks and/or ridges with first surfaces coinciding with the radius of the recess or one or more parallel lines parallel with the radius, wherein the spacer member is arranged with third ridges and/or tracks which have surfaces which can be set substantially opposite the first surfaces, and in that the first and third tracks and ridges and the first and third surfaces are arranged with a substantial pass fit accuracy which prevents any substantial rotational clearance between the spacer member and the implant.
Specification