How to make an auricle implant that best matches a patient’s auricle?

PATENT:

2790402

INVENTION:

Auricle implant

PATENTEE:

National University of Science and Technology MISIS; 3D Bioprinting Solutions

PURPOSE:

To eliminate defects of the auricle, both congenital and resulting from cartilage damage due to injuries, burns, tumors.

INNOVATION:

The problem of ear reconstruction has a special place in reconstructive surgery. This is due to the complexity of the relief of the organ, the presence of a thin cartilage plate between the skin layers, as well as peculiarities of attachment to the skull. Modern ear implants are produced by 3D printing based on computer tomography of the patient’s healthy ear. However, with this approach, the implant only repeats the shape of the patient’s ear, while the natural biomechanics of the organ is not conserved. The advantage of the invention is that the implant contains a polyurethane frame which repeats the geometry of the ear shell and has a gyroid structure which ensures a good vascular ingrowth into it. Stiffening ribs embedded inside the frame increase the rigidity of the implant structure. It retains its original shape under the action of the tension force of the skin flap layers, which brings the implant closer to the native (physiologically natural) ear shell in terms of biophysical characteristics. The density of cellular material within the implant, close to the density of the native tissue, increases the regenerative potential and the implant engraftment.

SCOPE OF APPLICATION
ПРИМЕНЕНИЯ:

The invention can be used in plastic and reconstructive surgery departments.

For more details please refer to the published patent.