Patent ID: 8092463

Claim:
An apparatus for vertical callus distraction, comprising: only a single linear drive comprising a first anchor with a plate-shaped region and a second anchor with a plate-shaped region with a recess being provided in said plate-shaped region of each of said first anchor and said second anchor, said first anchor and said second anchor being displaceable relative to one another via said linear drive and said plate-shaped region of said first anchor and said plate-shaped region of said second anchor being substantially orientated perpendicularly to a displacement direction, said first anchor being connectable to a fixed bone segment and said second anchor being connectable to a movable bone segment in a separating joint between said fixed bone segment and said movable bone segment, said linear drive further including a first element with said first anchor fixed to an end of said first element and a second element with said second anchor fixed to an end of said second element, said first element and said second element being translationally displaceable relative to one another and capable of establishing a rigidly defined distance between said first anchor and said second anchor with said linear drive preventing rotation of said first element relative to said second element, thereby preventing rotation between said first anchor relative to said second anchor.