US 4,787,377 A · Surgical instrument for positioning and insertion of posterior cruciate ligament of the knee in plasty (or prosthetic replacement)

Abstract

This invention concerns a surgical instrument for positioning and insertion for plasty (prosthetic replacement) of the posterior cruciate ligament of the knee. This instrument is characterized by the fact that it consists of, on the one hand, a chisel composed of a handle (2) and a blade (1) in the shape of an italic `S`, the internal terminal part of which (4) is concave, so that the aforesaid blade (1) may be introduced across the femoral notch up to the posterior face of the tibia, and on the other hand, a guide support (9) fixed firmly to the chisel (1, 2) by clamp (8), which comprises at its extremity, arranged in relation to and at a distance from the concave part (4) of the blade (1), two double branch guides (10) in the direction of the aforementioned concave part (4).

Claims7

Dependent claims

Surgical instrument for positioning and insertion for plasty (or prosthetic replacement) of the posterior cruciate ligament of the knee enabling this surgery to be carried out by a medial anterior approach, whilst obtaining an anatomical point of penetration of the aforementioned PCL at the parapatellar aspect of the tibia and avoiding any damage to the posterior elements, notably vascular, the surgical instrument comprising:

a chisel composed of a handle and a blade in the shape of an italic `S` and having an internal terminal part that is concave, so that the aforesaid blade can be introduced across the femoral notch up to the posterior face of the tibia;
and
a guide support rigidly anchored on the chisel and which includes at its extremity a double branch guide, adapted for guiding the placement of drills into the tibial section, the angle between the axis of the guide and the tangent at the internal face of the concave part of the blade being greater than 90 degrees, thus permitting the simultaneous insertion of the two postero-internal and postero-external parts of the posterior cruciate ligament.

Dependencies are inferred from the claim text.

Surgical instrument for positioning and insertion of posterior cruciate ligament of the knee in plasty (or prosthetic replacement)

Life of this patent

Surgical instrument for positioning and insertion of posterior cruciate ligament of the knee in plasty (or prosthetic replacement)

Life of this patent

Abstract

Claims7