Abstract: A bone reamer has an ablation device for forming cavities in body tissue, the ablation device is movable with respect to a head of the reamer, and is capable of protruding at least partially beyond a surface of the head. The amount of protrusion the ablation device protrudes beyond the surface of the head has a variable geometry and the geometry is remotely modifiable. More particularly, the amount the ablation device extends beyond the outer surface of a reamer head body can be varied by an actuator located on the reamer outside the body.

Abstract: A bone plate having a plurality of openings for receiving a compression bone screw or a cortical screw. An end cap, threadably insertable in the opening and having a layer of polymeric material interposed between the end cap and the top of the head such that the compression of the polymeric material would allow slight axial movement of the screw. Alternatively, a locking ring adapted to attach to the head of the screw and having shape complimentary to the features formed on the head. The locking ring and the bone screw being assembled together and being insertable in the bone simultaneously using a dedicated instrument. Compression may be applied to a bone fracture by turning the bone screw alone after the locking ring has reached its final axial position.

Abstract: A hip fracture device providing distance limited dynamization, load controlled dynamization and combinations of both dynamization methods by varying components. The hip fracture device includes a plate having a head portion and a shaft portion. A barrel projects from the head portion of the plate and a screw is inserted in the barrel. A friction pin is slidably connected with the screw, and an end cap is fixed to the head portion of the plate. The friction pin is fixedly connected with the end cap. The screw slides over the friction pin and toward the end cap when a load is applied on the fracture device. The load required for further sliding of the screw over the friction pin increases incrementally as the screw slides towards the end cap.

Abstract: A punching device for preparing a recess in a bone has a punching tool usable for such a punching device. An implant usable with the punching tool is provided and a method for preparing a recess in a bone are disclosed. The punching device comprises an ultrasonic sonotrode and a punching tool which is fixable to the sonotrode at its proximal extremity. At its distal extremity, the punching tool has a thin-walled portion having a non-rotational symmetric cross-section. By ultrasonic vibration of the punching tool, the thin-walled portion can be forced into a bone thereby preparing a recess of which is not rotationally symmetric. Subsequently, an implant can be held in such recess. Due to its lack of rotational symmetry, the implant may absorb rotational forces around its longitudinal axis.

Abstract: An implantation pin for implantation in a target structure has a pinhead and a shaft. The pinhead comprises a pinhead moulding portion comprising a moldable material which can be liquefied by application of mechanical energy such as ultrasonic vibration energy. A channel extends through the pinhead and the shaft, the channel connecting the pinhead molding portion to a discharge opening located at the shaft. The moldable material can be liquefied by applying mechanical energy e.g. in the form of ultrasonic vibrations via e.g. a fixation device including an ultrasonic sonotrode and a vibrating tip. The pressure applied by the vibrating tip can be transmitted via the border of the pinhead to the target structure while the liquefied moldable material can be forced through the channel and the discharge opening into a gap between the implantation pin and a recess in a target structure thereby fixing the implantation pin in the target structure.

Abstract: A screwdriver for bone screws, especially for compression screws and locking screws, has a handle and shaft extending out centrally from the handle. The shaft has a screw-driving tool on its free end. The shaft, includes a flexible shaft portion, wherein the shaft has two rigid, solid portions on both sides of the flexible portion. The flexible shaft portion has a flexible element for the transmission of a torque, and at least the flexible shaft portion is surrounded by an elastic protection hose or a rubber or plastic elastomeric tubular cover.

Abstract: A device for installation of a guide wire for a drilling tool in a correct positional arrangement in a bone. The device includes a tissue protection sleeve, which has at one end a laterally projecting grip or handle. A trocar is provided, which trocar can be introduced into the tissue protection sleeve from the handle end and whose other end is closed. The trocar is rotatable in the tissue protection sleeve and has a central bore hole and a plurality of eccentric axially parallel bore holes, through which a guide wire can be passed. A second handle is provided which extends approximately in the same direction of the first handle and whose one end engages the end of the trocar situated the outside of the tissue protection sleeve, so that the normally freely rotatable trocar is fixed in the direction of rotation relative to the tissue protection sleeve, when both handles are manually clamped against each other.

Abstract: A data transmission system connected to a bone implant has an extra-corporeally arranged external transmitting unit an implantable internal first receiving unit adapted to be actuated by the external transmitting unit. An internal transmitting unit is adapted to be coupled and implanted to the implant. A second transmission section is located between the external transmitting unit and the internal first receiving unit, via which the internal transmitting unit is actuated. A second receiving unit and a first transmission section is located between the internal transmitting unit and the second receiving unit. The first transmission section operates with acoustic vibrations or waves.

Abstract: A tissue protection sleeve for use with a drill alignment assembly for a bone plate includes a tubular body having a first end and a second end. A hole extending from the first end to the second end is formed in the tubular body. The hole has a first center line. An expanded section is formed at the second end, the expanded section has a second center line. A first nose is formed at the first end, the first nose is adapted to fit in a screw hole in the bone plate such that the sleeve is rigidly fixed to the bone plate. The drill alignment assembly further includes an aiming arm adapted to mount to a bone plate and a drill guide insertable in the tissue protection sleeve.

Abstract: An improved polyaxial mechanism is disclosed. The mechanism preferably works in conjunction with a bone plate and fixation mechanism, such as a screw, rod, or the like. The improved polyaxial mechanism increases the strength of the locking among the locking mechanism, fixation mechanism, and bone plate. In addition, the improved polyaxial mechanism allows for easy locking among the elements, as well as more difficulty in unlocking the elements. A method for utilizing the improved polyaxial mechanism is also disclosed.

Abstract: An implantation device for implantation in a target structure such as a bone includes a base region. The base region includes a connecting portion, wherein the connecting portion is adapted to interact with a coupling region of a handling device. In particular, the connecting portion and the coupling region may be engageable with each other. The device may be polymeric and is capable of being softened by mechanical energy such as sound energy.

Abstract: An implantation device and method for applying the same has an implantation device for implantation in a target structure such as a bone. The implantation device comprises a shaft region, wherein the shaft region has at least one protrusion. The protrusion comprises a material which is modifiable by using mechanical energy. In particular, the modifiable material may be liquefiable and/or shearable by the mechanical energy. Preferably, the material may be adapted in such a way that the modifications may be achievable by a mechanical energy input which does not destroy human tissue.

Abstract: A device for installation of a guide wire for a drilling tool in a correct positional arrangement in a bone. The device includes a tissue protection sleeve, which has at one end a laterally projecting grip or handle. A trocar is provided, which trocar can be introduced into the tissue protection sleeve from the handle end and whose other end is closed. The trocar is rotatable in the tissue protection sleeve and has a central bore hole and a plurality of eccentric axially parallel bore holes, through which a guide wire can be passed. A second handle is provided which extends approximately in the same direction of the first handle and whose one end engages the end of the trocar situated the outside of the tissue protection sleeve, so that the normally freely rotatable trocar is fixed in the direction of rotation relative to the tissue protection sleeve, when both handles are manually clamped against each other.

Abstract: A targeting device for targeting a cross bore in a bone nail has an arm member coupled to an end portion of the bone nail and an aiming portion forming part of the arm member extending parallel to a longitudinal axis of the bone nail. An adjustable aiming device is mounted on the aiming portion, the adjustable device having a guide bore alignable with the cross bore in the nail. The adjustable device is moveable with respect to the aiming portion in a direction perpendicular to a plane containing both the nail longitudinal axis and central axis of the cross bore. A target indicator is mounted on the adjustable aiming device. The target indicator has a radiolucent body including a planar portion having spaced parallel radiopaque elements therein.

Abstract: A targeting device for targeting a cross bore in a bone nail has an arm member coupled to an end portion of the bone nail and an aiming portion forming part of the arm member extending parallel to a longitudinal axis of the bone nail. An adjustable aiming device is mounted on the aiming portion, the adjustable device having a guide bore alignable with the cross bore in the nail. The adjustable device is moveable with respect to the aiming portion in a direction perpendicular to a plane containing both the nail longitudinal axis and central axis of the cross bore. A target indicator is mounted on the adjustable aiming device. The target indicator has a radiolucent body including first and second spaced parallel planar portions each having a spaced radiopaque element therein.

Abstract: A medical device for handling an implant, the medical device comprising a loading section adapted to be loaded with an insert element to be inserted into a hole formed in an implant, and a guiding section adapted to be guided by a pin inserted into the hole formed in the implant for guidedly inserting the insert element into the hole formed in the implant.

Abstract: An aiming device for a locking nail has a first portion detachably connectable with the exposed end of the nail. An aiming arm is connected to the first portion, which, in turn, is connected to an accommodation arm portion which runs approximately parallel to the nail. The accommodation portion has at least one transverse bore for receiving a guiding sleeve. The accommodation portion being provided with a locking portion which is movable in relation to the accommodation portion against a spring force, with the transverse bore being approximately aligned towards an opening in the locking portion. The transverse bore and the opening being disposed such that when the locking portion is relaxed an accommodated guiding sleeve is held slightly clamped and the sleeve is freely movable in a position locking upon a movement of the portion against the spring force.

Abstract: A bone reconstruction plate is formed of a longitudinally extending plate defining one or more attachment bores. Within one or more of the attachment bores, one or more ridges are disposed around at least a portion of the interior of the one or more attachment bores, whereby the one or more ridges operate to provide increased resistance to fatigue.

Abstract: A device for stimulating the osteogenesis of a traumatized bone is mounted on a bone stabilizing implant. The device comprises a first component part comprising a first electrode, an isolating element, which is mounted at the first component part and a second component part comprising a second electrode. The second component part is mounted at the isolating element such that the first electrode and the second electrode are electrically isolated from each other. The power generation unit is electrically coupled both to the first electrode and to the second electrode. The first component part is designed to be attached to the implant in such a manner that the second component part intrudes in a region defined by a trauma within the bone.

Abstract: A humeral nail for the surgical care of fractures of the proximal humerus, with a shaft which has a longitudinal axis and is provided in a proximal portion with at least transverse bores spaced apart in the axial direction. The axis of the three bores is circumferentially offset in respect to each other in planes perpendicular to the longitudinal axis of the shaft. The nail is provided with at least two additional transverse bores in a portion located towards the distal end of the nail, the proximal transverse bore running diagonally to the longitudinal axis and being located in the same plane as is the axis of the additional transverse bores.