Implant for osteosyntheses

An implant for osteosyntheses, comprising:

• a plate (1) provided with a surface defining a plurality of holes (3) and two ends, the plate defining a longitudinal direction and a center plane disposed generally parallel to the longitudinal direction and located generally perpendicular to the surface, the holes generally following one another in the longitudinal direction and being positioned outwardly offset from the center plane with at least most of the holes being offset outwardly from the center plane in a direction generally opposite from neighboring holes, the holes each having a center axis (6) forming an acute angle (W) with the center plane (5) of the plate (1) such that, when inserted, the screws are not all aligned in parallel, the holes (3) each generally tapering inwardly from the surface (7) to form a conical taper;
• the screws (2) each having a head (10) which tapers in a conical shape toward a shaft (9) and adapted to be secured in the holes (3) in a friction-locked and/or form-fitting manner;
• the plate (1) being configured to have multiple twists as seen in its longitudinal direction, whereby in the area of the individual holes (3) the main alignment across the longitudinal extent of the plate (1) runs at a right angle to the center axis (6) of the corresponding hole (3) and the plate (1) has a slight curvature along the longitudinal direction, whereby a tendon placed through the two ends (14) of the plate (1) is at a distance from a center section (13) of the plate (1), wherein the center axis (6) of each of the holes (3) forms an acute angle (W) of approximately fifteen (15°) degrees with the center plane (5) of the plate (1).

An implant for osteosyntheses, comprising:

• a plate (1) provided with a surface defining a plurality of holes (3) and two ends, the plate defines a longitudinal direction and a center plane disposed generally parallel to the longitudinal direction and located generally perpendicular to the surface, the holes generally following one another in the longitudinal direction and being positioned outwardly offset from the center plane with at least most of the holes being offset outwardly from the center plane in a direction generally opposite from neighboring holes, the holes each having a center axis (6) forming an acute angle (W) with the center plane (5) of the plate (1) such that, when inserted, the screws are not all aligned in parallel, the holes (3) each generally tapering inwardly from the surface (7) to form a conical taper;
• the screws (2) each having a head (10) which tapers in a conical shape toward a shaft (9) and adapted to be secured in the holes (3) in a friction-locked and/or form-fitting manner;
• the plate (1) being configured to have multiple twists as seen in its longitudinal direction, whereby in the area of the individual holes (3) the main alignment across the longitudinal extent of the plate (1) runs at a right angle to the center axis (6) of the corresponding hole (3) and the plate (1) has a slight curvature along the longitudinal direction, whereby a tendon placed through the two ends (14) of the plate (1) is at a distance from a center section (13) of the plate (1), wherein the plate (1) is manufactured from fiber-reinforced thermoplastics, and the anisotropy of the elastic properties of the plate (1) is adjusted to the elasticity or rigidity of the bone (4).

An implant for osteosyntheses, comprising:

• a plate (1) provided with a surface defining a plurality of holes (3) and two ends, the plate defines a longitudinal direction and a center plane disposed generally parallel to the longitudinal direction and located generally perpendicular to the surface, the holes generally following one another in the longitudinal direction and are positioned outwardly offset from the center plane with at least most of the holes being offset outwardly from the center plane in a direction generally opposite from neighboring holes, the holes each having a center axis (6) forming an acute angle (W) with the center plane (5) of the plate (1) such that, when inserted, the screws being not all aligned in parallel, each of the holes (3) generally tapering inwardly from the surface (7) to form a conical taper;
• the screws (2) each having a head (10) which tapers in a conical shape toward a shaft (9) and adapted to be secured in the holes (3) in a friction-locked and/or form-fitting manner;
• the plate (1) being configured to have multiple twists as seen in its longitudinal direction, whereby in the area of the individual holes (3) the main alignment across the longitudinal extent of the plate (1) runs at a right angle to the center axis (6) of the corresponding hole (3) and the plate (1) has a slight curvature along the longitudinal direction, whereby a tendon placed through the two ends (14) of the plate (1) is at a distance from a center section (13) of the plate (1), wherein the anisotropy of the elastic properties of the plate (1) is adjustable according to the formula:
• E modulus (longitudinal):
• E modulus (tangential)=0.3 to 0.7.

An implant for osteosyntheses, comprising:

• a plate (1) provided with a surface defining a plurality of holes (3) and two ends, the plate defines a longitudinal direction and a center plane disposed generally parallel to the longitudinal direction and located generally perpendicular to the surface, the holes generally following one another in the longitudinal direction and are positioned outwardly offset from the center plane with at least most of the holes being offset outwardly from the center plane in a direction generally opposite from neighboring holes, the holes each having a center axis (6) forming an acute angle (W) with the center plane (5) of the plate (1) such that, when inserted, the screws are not all aligned in parallel, the holes (3) each generally taper inwardly from the surface (7) to form a conical taper;
• the screws (2) each have a head (10) which tapers in a conical shape toward a shaft (9) and can be secured in the holes (3) in a friction-locked and/or form-fitting manner;
• the plate (1) being configured to have multiple twists as seen in its longitudinal direction, whereby in the area of the individual holes (3) the main alignment across the longitudinal extent of the plate (1) runs at a right angle to the center axis (6) of the corresponding hole (3) and the plate (1) has a slight curvature along the longitudinal direction, whereby a tendon placed through the two ends (14) of the plate (1) is at a distance from a center section (13) of the plate (1), wherein the shaft (9) of the screw (2) has an out-of-round cross section, as taken generally perpendicularly to a longitudinal axis of the shaft (9), at least one thread (8) being located generally around the shaft.