Abstract: The disclosure relates to medical devices and methods of manufacturing medical devices. An intramedullary rod includes a head member, a shaft member partially disposed within a distal recess of the head member, and an outer body member disposed circumferentially around the shaft member and a portion of the head member. Medical device systems and methods of manufacturing medical devices are also described.

Abstract: The disclosure relates to medical devices and methods of manufacturing medical devices. An orthopedic screw includes an inner core member having a head having a first outer diameter, a tip having a second outer diameter, and a body extending between the head and the tip and having a third outer diameter that is less than the first outer diameter and the second outer diameter. An outer body member is disposed circumferentially around the body of the inner core member and defines an outer body member external thread. The tip of the inner core member can define an inner core member external thread that forms an interrupted thread with the outer body member external thread.

Abstract: The rod coupler according to the present invention comprises two clamping jaws and locking means for locking said clamping jaws against one another. Each clamping jaw comprises an outside surface and a clamping surface, the latter providing at least a first and a second groove. Each groove runs laterally from a different part of the outside surface extending into the rod coupler, wherein longitudinal axis of the first groove and the second groove include an angle that is equal to or less than 160 degrees. Opposing grooves form an aperture. The apertures are adapted for receiving a rod if the locking means is released. Clamping jaws that are locked by the locking means clamp the rods received in said apertures.

Abstract: A bone fastener for use in orthopedic surgery for fixing an implant to bone has a threaded or unthreaded shaft configured to engage bone and a head having a thread on an outer surface to engage the implant. The thread on the head of the fastener has a profile in cross section that includes peaks with a curved shape.

Abstract: Disclosed herein are cable plugs for securing surgical cable to a bone plate. The cable plugs each have a cable retaining member and a fastening member. The cable retaining members each have a receiving portion adapted to receive a portion of the surgical cable therein. The cable retaining members are first coupled to the fastening members prior to securing the cable plug to the bone plate. The cable retaining member may rotate with respect to the fastening member about 270° along a longitudinal axis of the cable plug when the cable retaining member is coupled to the fastening member. When securing the surgical cable to the bone plate, the cable retaining member is rotated about the longitudinal axis of the cable plug until an axis of the receiving portion is parallel to an axis of the surgical cable. The surgical cable is then placed within the receiving portion, tightened, and crimped to secure the bone plate to the bone.

Abstract: A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements has at least one clamping assembly having a pair of jaws with at least two different size grooves to accommodate a bone fixation element such as a pin or rod. An alternate clamping assembly has at least three grooves wherein at least two of the grooves have a different size adapted to accommodate a correspondingly sized bone fixation element such as a bone pin. The longitudinal axes of the grooves define a polygon. The jaw pairs can be rotated about a central longitudinal axis to present different size reception cavities towards the pins or rocks depending on their diameter.

Abstract: A bone fastener for use in orthopaedic surgery for fixing an implant to bone has a threaded or unthreaded shaft configured to engage bone and a head having a thread on an outer surface to engage the implant. The thread on the head of the fastener has a profile in cross section that includes peaks with a curved shape.

Abstract: The rod coupler according to the present invention comprises two clamping jaws and locking means for locking said clamping jaws against one another. Each clamping jaw comprises an outside surface and a clamping surface, the latter providing at least a first and a second groove. Each groove runs laterally from a different part of the outside surface extending into the rod coupler, wherein longitudinal axis of the first groove and the second groove include an angle that is equal to or less than 160 degrees. Opposing grooves form an aperture. The apertures are adapted for receiving a rod if the locking means is released. Clamping jaws that are locked by the locking means clamp the rods received in said apertures.

Abstract: A fixation clamp for use in an external fixation system for holding bone fragments adjacent to each other with the help of fixation elements has at least one clamping assembly having a pair of jaws with at least two different size grooves to accommodate a bone fixation element such as a pin or rod. An alternate clamping assembly has at least three grooves wherein at least two of the grooves have a different size adapted to accommodate a correspondingly sized bone fixation element such as a bone pin. The longitudinal axes of the grooves define a polygon. The jaw pairs can be rotated about a central longitudinal axis to present different size reception cavities towards the pins or rocks depending on their diameter.

Abstract: A medical system includes parts used in a method for detachably establishing a spatial orientation between a body implant and an aiming device. A positioning arm being connected to the aiming device and an adaptor device being connected to or integrally formed with a bone stabilizing plate are hooked into each other. This is accomplished by means of an engaging element of the positioning arm, which engaging element is designed such that it may be coupled with an attachment element of the adaptor device. Further, there is provided a snapping mechanism which is designed to automatically engage in an interlocking element of the adaptor device, when the positioning arm, when hooked into the adaptor device, is rotated relative to the adaptor device towards a final angular position.

Abstract: A method of connecting an intramedullary nail and a targeting and/or nailing instrument includes engaging a coupling element which has an axially parallel projection with an axially parallel recess on the hollow connection end of the nail. The engagement of the projection and recess fastens the nail under axial engagement on the connection end of the instrument in predefined rotational position on the instrument. A quick-fastener element engages in the connection end of the nail and has a first coupling element and the connection end of the nail has a second coupling element. The coupling elements are configured so that in a first rotational position relative to the axially parallel projection the instrument can be introduced into the connection end of the nail and in a second rotational position the coupling elements cooperate so that the nail is held axially fixedly on the instrument.

Abstract: A method of connecting an intramedullary nail and a targeting and/or nailing instrument includes engaging a coupling element which has an axially parallel projection with an axially parallel recess on the hollow connection end of the nail. The engagement of the projection and recess fastens the nail under axial engagement on the connection end of the instrument in predefined rotational position on the instrument. A quick-fastener element engages in the connection end of the nail and has a first coupling element and the connection end of the nail has a second coupling element. The coupling elements are configured so that in a first rotational position relative to the axially parallel projection the instrument can be introduced into the connection end of the nail and in a second rotational position the coupling elements cooperate so that the nail is held axially fixedly on the instrument.

Abstract: An intramedullary nail and a targeting and/or nailing instrument includes a connector end which has an axially parallel projection which cooperates with an axially parallel recess on the hollow connection end of the nail. The engagement of the projection and recess fastens the nail under axial engagement on the connection end of the instrument in predefined rotational position on the instrument. A quick-fastener element engages in the connection end of the nail and has a first coupling element and the connection end of the nail has a second coupling element. The coupling elements are configured so that in a first rotational position relative to the axially parallel projection the instrument can be introduced into the connection end of the nail and in a second rotational position the coupling elements cooperate so that the nail is held axially fixedly on the instrument.

Abstract: A bone nail, particularly a proximal femoral nail, has a nail shank having at least one cross-bore near one end and an axial bore having a threaded portion. A screw, for example, a femoral neck screw is provided having a threaded portion and a smooth shank portion between the threaded portion and a screw head, which can be introduced into the cross-bore. An interlocking pin or screw is placed in the axial bore. The locking pin has a male threaded portion interacting with the female threaded portion of the bore. The locking pin or screw has an end portion which engages the smooth shank of the screw to locate it axially and wherein at least the end portion of the locking pin is made of an elastically and/or plastically deformable material.

Abstract: An osteosynthetic aid for tubular bones includes a locking nail which has a shank and, at the two ends of said shank, has at least one cross-bore for a headed locking screw. A biasing sleeve is resiliently deformable in an axial direction and is disposed between the head of the locking screw and the shank of the locking nail. The sleeve maintains the cross-locking screw under tension to keep the shank of the nail from shifting during use.

Abstract: A targeting system has a targeting device for a locking nail which is proximally provided with cross-bores the axes of which are disposed in an offset relationship from each other by predetermined distances and/or by predetermined angles. The apparatus has a target arm having at least one target bore and a holding device mounted on the target arm to engage the distal end of the nail. The holding device has a reception bore in which a retaining or locating bar is guided. The locating bar extends in parallel with the target arm and generally perpendicular to the cross-bore. The locating bar has fasteners to fix it to the nail. The retaining bar has several recesses in the area of the reception bore. The reception bore has associated therewith a radially movable locking element or detent element which can be moved into engagement with one of the recesses by use of a handle to locate the axial and rotational positions of the retaining bar in the reception bore.

Abstract: A medical system includes parts used in a method for detachably establishing a spatial orientation between a body implant and an aiming device. A positioning arm being connected to the aiming device and an adaptor device being connected to or integrally formed with a bone stabilizing plate are hooked into each other. This is accomplished by means of an engaging element of the positioning arm, which engaging element is designed such that it may be coupled with an attachment element of the adaptor device. Further, there is provided a snapping mechanism which is designed to automatically engage in an interlocking element of the adaptor device, when the positioning arm, when hooked into the adaptor device, is rotated relative to the adaptor device towards a final angular position.

Abstract: A locking nail for treating fractures of tubular bones has at least one cross-bore is provided at one end for the reception of a bone screw. The nail has a female thread at the end with the cross-bore for connection to a nail retention screw. The nail has an anti-rotation feature to anti-rotationally secure the rotational position of a joining sleeve which joins a targeting apparatus relative to the locking nail.

Abstract: An intramedullary nail and a targeting and/or nailing instrument includes a connector end which has an axially parallel projection which cooperates with an axially parallel recess on the hollow connection end of the nail. The engagement of the projection and recess fastens the nail under axial engagement on the connection end of the targeting and nailing instrument in predefined rotational position on the targeting and/or nailing instrument. A guide fastener element is rotationally mounted on the connection end of the targeting and/or nailing instrument.

Abstract: A bone nail, particularly a proximal femoral nail, has a nail shank having at least one cross-bore near one end and an axial bore having a threaded portion. A screw, for example, a femoral neck screw is provided having a threaded portion and a smooth shank portion between the threaded portion and a screw head, which can be introduced into the cross-bore. An interlocking pin or screw is placed in the axial bore. The locking pin has a male threaded portion interacting with the female threaded portion of the bore. The locking pin or screw has an end portion which engages the smooth shank of the screw to locate it axially and wherein at least the end portion of the locking pin is made of an elastically and/or plastically deformable material.