Abstract: The invention concerns a bone plate system comprising: a bone fastening element comprising a shaft with a first thread, the fastening element further comprising a head with a second thread on its outer surface, the outer surface having a first hardness; and a bone plate having a second hardness which is smaller than the first hardness, the bone plate comprising a through hole for receiving the bone fastening element. The head is oxygen diffusion hardened.

Abstract: The invention concerns a bone plate system comprising: a bone fastening element comprising a shaft with a first thread with a first lead length, the fastening element further comprising a head with a second thread on its outer surface, the second thread having a second lead length, the outer surface having a first hardness; and a bone plate with a second hardness which is smaller than the first hardness, the bone plate comprising a non-threaded through hole in a non-assembled state for receiving the bone fastening element, the hole comprising a first hole portion with a first three-dimensional shape and a second hole portion with a second, different three-dimensional shape. The first lead length substantially equals the second lead length, and the second thread is arranged to irreversible deform the wall of the hole to form a female thread on the wall.

Abstract: The invention concerns a bone plate system comprising: a bone fastening element comprising a shaft with a first thread, the fastening element further comprising a head with a second thread on its outer surface, the outer surface having a first hardness; and a bone plate having a second hardness which is smaller than the first hardness, the bone plate comprising a through hole for receiving the bone fastening element. The head is oxygen diffusion hardened.

Abstract: The invention concerns a bone plate system comprising: a bone fastening element comprising a shaft with a first thread with a first lead length, the fastening element further comprising a head with a second thread on its outer surface, the second thread having a second lead length, the outer surface having a first hardness; and a bone plate with a second hardness which is smaller than the first hardness, the bone plate comprising a non-threaded through hole in a non-assembled state for receiving the bone fastening element, the hole comprising a first hole portion with a first three-dimensional shape and a second hole portion with a second, different three-dimensional shape. The first lead length substantially equals the second lead length, and the second thread is arranged to irreversible deform the wall of the hole to form a female thread on the wall.

Abstract: A device for bone fixation comprising: a bone plate (1) which has a plate hole (2) suitable for receiving a bone screw (20), the plate hole (2) having an inner wall (4) made of a material which has a hardness Hp; and a hollow cylinder- or hollow cone-shaped insert which is mounted in the plate hole (2), at least partially abuts the inner wall (4) and is suitable for accommodating the head (21) of a bone screw (20), the insert (10) being arranged in the plate hole (2) such that it is secured against rotation and consisting of a material that has a hardness HE<Hp.

Abstract: An expandable spinal implant assembly for insertion between two adjacent vertebral bodies includes a first body with a first superior endplate and a first inferior endplate, which are connected together. A strut is comprised by said first body and connects with one of said endplates, said strut including a first threaded through bore with a central axis. The spinal implant assembly further includes a substantially hollow second body having a second superior endplate and a second inferior endplate, and is engaged within said first body. At least one track is arranged on a second top inside face of said second superior endplate and/or on a second bottom inside face of said second inferior endplate, said track being oriented at an acute angle relative to the central axis of said first threaded through bore when said substantially hollow second body is at least partially engaged with said first body.

Abstract: The present application relates to an expandable spinal implant (1) comprising two elongated implant members (20, 30). The implant members (20, 30) are rotatably coupled to a central base portion (10) and comprise a first end with an axis of rotation and circumferentially arranged gear teeth (23, 33). The gear teeth (23) of the first elongated implant member (20) is interlocked into said gear teeth (33) of the second elongated implant member (30).

Abstract: Intervertebral implant (1) comprising (i) a first elongated implant member (20) with a longitudinal axis (221), an upper surface (222) and a lower surface (223) for apposition to the endplates of two adjacent vertebrae, and with a lateral circumferential surface (224) and (ii) a second elongated implant member (30) with a longitudinal axis (321), an upper surface (322) and a lower surface (323) for apposition to the same endplates and with a lateral circumferential surface (324). Said elongated implant members (20, 30) are rotatably coupled to a central body (10) for rotation in a central plane (101 essentially parallel to said upper and lower surfaces.

Abstract: An expandable spinal implant assembly is configured to be inserted between two adjacent vertebral bodies. The expandable spinal implant assembly includes a substantially hollow first body with a first superior endplate with a first top inside face and a first inferior endplate with a first bottom inside face. The first superior endplate and the first inferior endplate are connected together by a lateral wall. At least one strut is arranged within said first body, connecting the first top inside face with the first bottom inside face, said strut including a first threaded through bore. The assembly further includes a substantially hollow second body with a second superior endplate and a second inferior endplate, said second body inserted within said first body. A central screw with a first end including a ball-head and a drive, said central screw further having a threaded shaft is engaged within said first threaded through bore.

Abstract: The present application relates to a torque limiter (1) comprising a handle (2) with a mono-block cylindrical handle-body. The cylindrical handle-body includes a central through bore (3) having an axis (B) at a right angle to a longitudinal axis (A) of the cylindrical handle-body as well as a first pocket (4) and a second pocket (5). The first pocket (4) is arranged on a first side and the second pocket (5) is arranged on a second side of said cylindrical handle-body opposite of said first side. The first pocket (4) and the second pocket (5) are arranged along said longitudinal axis (A) and intersect each other in the area of said central through bore (3), each of said first pocket (4) and said second pocket (5) comprising at least one magnet (6a, 6b, 7a, 7b; 35). Further, the torque limiter (1) comprises a mono-block shaft (20) having a central shaft (21) removably arranged in said central through bore (3), said central shaft (21) having a drive (23) arranged at a first end.

Abstract: The present application relates to a coupling device for a handle (3) of a medical tool (1) or medical power-tool chuck (30). The coupling device comprises a coupling-body (2) including a bore (6), a working axis (X) extending along said bore (6) and a seat (4) arranged at a first end (8) of said bore for receiving a tool-insert (10) with a central axis (Y) at an angle in reference to the working axis (X). The coupling-body (2) further comprises a protrusion (7) arranged within said bore (6), said protrusion (7) being configured to engage a groove (13) of the tool-insert (10) upon alignment of the central axis (Y) with the working axis (X). The engagement of the protrusion (7) with said groove (13) locks the tool-insert (10) within said coupling body (2).

Abstract: The present application relates to an expandable spinal implant (1) comprising two elongated implant members (20, 30). The implant members (20, 30) are rotatably coupled to a central base portion (10) and comprise a first end with an axis of rotation and circumferentially arranged gear teeth (23, 33). The gear teeth (23) of the first elongated implant member (20) is interlocked into said gear teeth (33) of the second elongated implant member (30).

Abstract: An expandable spinal implant assembly for insertion between two adjacent vertebral bodies includes a first body with a first superior endplate and a first inferior endplate, which are connected together. A strut is comprised by said first body and connects with one of said endplates, said strut including a first threaded through bore with a central axis. The spinal implant assembly further includes a substantially hollow second body having a second superior endplate and a second inferior endplate, and is engaged within said first body. At least one track is arranged on a second top inside face of said second superior endplate and/or on a second bottom inside face of said second inferior endplate, said track being oriented at an acute angle relative to the central axis of said first threaded through bore when said substantially hollow second body is at least partially engaged with said first body.

Abstract: An expandable spinal implant assembly is configured to be inserted between two adjacent vertebral bodies. The expandable spinal implant assembly includes a substantially hollow first body with a first superior endplate with a first top inside face and a first inferior endplate with a first bottom inside face. The first superior endplate and the first inferior endplate are connected together by a lateral wall. At least one strut is arranged within said first body, connecting the first top inside face with the first bottom inside face, said strut including a first threaded through bore. The assembly further includes a substantially hollow second body with a second superior endplate and a second inferior endplate, said second body inserted within said first body. A central screw with a first end including a ball-head and a drive, said central screw further having a threaded shaft is engaged within said first threaded through bore.

Abstract: The present application relates to an expandable spinal implant comprising three or more elongated implant members. The implant members are rotatably coupled to a central base portion and comprise a first end with an axis of rotation and circumferentially arranged gear teeth. The gear teeth of at least one of said elongated implant members are interlocked into said gear teeth of the two other elongated implant members.

Abstract: The present application concerns a shoulder prosthesis assembly. The shoulder prosthesis assembly comprises a humeral stem including a first articulating coupling means, a base portion of a substantially disc shaped geometry including a second articulating coupling means. Said first articulating coupling means and said second articulating coupling means connect the stem to the base portion. The ratio between the circumference of the disc shaped base portion and the peripheral thickness of the disc shaped base portion is at least 18:1.

Abstract: The present application relates to an artificial joint implant comprising a first element with a socket and a second element with a ball head. The socket is at least hemispherical and said ball head is inserted in said socket such as to form a ball-and-socket connection between said first element and said second element. Movement of said ball head in said socket is restricted in at least one degree of freedom by means of a at least one protrusion engaged in a at least one groove, wherein said at least one protrusion is provided on said socket and said at least one groove is provided on said ball head or vice versa.