Instrument for marking and drilling femoral and tibial insertion tunnels
OwnerJacques-Philippe Laboureau, Alain Cazenaveinventors
Life of this patent
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Abstract
Surgical ancillary instrument for aiming and drilling of femoral and tibial insertion tunnels of at least one bundle of neo-ligaments for the reconstruction of the anterior opposite ligament of the knee. The instrument includes a handle equipped at one of its ends with a straight rod finishing in a hook perpendicular to the rod serving as a reference for at least one aimer barrel having in relation to the rod predetermined horizontal and vertical directions so as to obtain an alignment of the drilling directions of the tibial and femoral insertion tunnels when the knee is in extension.
Claims18
Surgical ancillary instrument for marking and drilling of the femoral and tibial insertion tunnels of at least one bundle of neo-ligaments for the reconstruction of the anterior cruciate of the knee, said instrument comprising:
- a straight rod having a distal end and a proximal end;
- a handle at said proximal end;
- a hook at said distal end, said hook being substantially perpendicular to said rod;
- means including a passageway guidable along said rod on a graduated scale in relation to said hook for obtaining predetermined horizontal and vertical directions of said passageway to obtain an alignment of marking and drilling directions of the femur and tibial insertion tunnels when the knee is in extension based on a predetermined radius associated with the isometric point of a knee, and said means including a passageway include a cursor having a tunnel positioned therein, said tunnel having an inlet, an outlet and predetermined horizontal and vertical directions, said cursor being guidable along said graduated scale, means for stopping said cursor to obtain a distance between said outlet of said tunnel and said hook which is equal to a predetermined radius associated with the isometric point of a knee.
Surgical ancillary instrument for marking and drilling of the femoral and tibial insertion tunnels of at least one bundle of neo-ligaments for the reconstruction of the anterior cruciate of the knee, said instrument comprising:
- a straight rod having a distal end and a proximal end;
- a handle at said proximal end;
- a hook at said distal end, said hook being substantially perpendicular to said rod;
- means including a passageway guidable along said rod in relation to said hook for obtaining predetermined horizontal and vertical directions of said passageway to obtain an alignment of marking and drilling directions of the femur and tibial insertion tunnels when the knee is in extension based on a predetermined radius associated with the isometric point of a knee,
- said instrument being adapted for the reconstruction of the anterior cruciate of the knee by an extra-articular passage, and said hook is adapted to bear on a posterior edge of a femoral condyle, and
- said means including a passageway comprise an aimer barrel having a tunnel positioned therein, said tunnel having an inlet, an outlet and predetermined horizontal and vertical directions, said aimer barrel being guidable along a graduated scale, means for stopping said aimer barrel to obtain a distance between said outlet of said tunnel and said hook so that an axial direction of said tunnel from the external cortical of the femur to the inter-condyloid insertion area of the anterior cruciate intersects said rod at a point of intersection situated at a distance from the bearing surface of said hook which is equal to a predetermined radius associated with the isometric point of a knee.
Dependencies are inferred from the claim text.