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Howmedica International Inc.

Sven Olerud

Karl M Richter

A method and a device for locking two implant elements to each other. A sleeve-shaped locking means (19) made of a polymeric material is arranged in a space adapted thereto inside the one element (3) which is placed in a corresponding hole (6) in the other element (1), alternatively between the two elements. The locking means (19) is subjected to compressive tightening, such that the resulting 'pressure increase' in the means yields a locking effect on the elements (1, 3).

Method and a device for implant locking

Device for fixating and adjusting the positions of vertebrae in

Bone screw for osteosynthesis

A surgical clamp which can be affixed to a vertebra without requiring the use of fastener elements which are driven or screwed into the vertebra includes a first block (1) from which there extend two projections or blades (3, 4) to form a fork structure which can straddle the vertebra arch in the region between the spinal processus and the processus articularis, and further includes a tensioning element (7) in the form of a rod which extends through the first block (1) and one end of which is curved to form a hook (10) for gripping around a lamina and the other end of which is screw threaded and coacts with nut (11) which is guided in the block and one end of which has a tool accommodating recess.

Clamp for use in spinal surgery

A fixing instrument for spinal surgery comprises two units (1,36) which by means of bone screws (6,7) each may be secured to a vertebra. One of these units (1) includes a block (2) having two rotatably mounted bone screws (6,7) which by means of special locking means (16) are secured against turning after the bone screws have been screwed in.

Fixing instruments for spinal surgery

A spinal joint for use in spinal surgery includes two blocks pivotally connected to each other. One block is secured to a vertebrae with a bone screw, which the other block connects to another spinal joint. The blocks rotate relative to one another, and can be locked relative to one another in various angular positions. Serrations on one block engage with corresponding serrations in the pivotal connection portion of the second block at a selected angle, and are locked in place by a locking screw.

Spinal joint

An aiming apparatus for making transverse bores in a patient's bone in register with the holes or bores of an osteosynthesis aid in the bone, especially an interlocking nail, comprises an elongated holder for the accommodation of an aiming member adapted to be brought into the beam path of an X-ray apparatus, a reception head for receiving a drill or wire drill rotatably supported in the holder, and a power drive supported by the holder for rotatably driving the reception head. The reception head is made of a material transparent to X-ray radiation.

Aiming apparatus

Fixing instrument for use in spinal surgery

An aiming apparatus for making transverse bores in a patient's bone in register with the holes or bores of an osteosynthesis aid in the bone, especially an interlocking nail, comprises an elongated holder for the accommodation of an aiming member adapted to be brought into the beam path of an X-ray apparatus, a reception head for receivig a drill or wire drill rotatably supported in the holder, and a power drive supported by the holder for rotatably driving the reception head. The reception head is made of a material transparent to X-ray radiation.

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Lanna, Sweden

Sven Olerud