ANATOMIC SIMULACRA HAVING PREDEFINED FRACTURE/TEAR PATTERNS, AND CAST ANATOMIC SIMULACRA WITH PRETENSIONED FIBRAL ELEMENTS

Smart overview of the Invention

The patent application describes advanced 3D printed anatomical models, known as anatomic simulacra, designed for medical training and surgical planning. These simulacra are constructed using various materials and techniques to closely mimic human anatomy, including bones, joints, and soft tissues. The models are particularly useful for simulating surgical procedures, allowing surgeons to practice and refine their skills without the need for cadaveric specimens.

Simulated Fracture Patterns

One type of anatomic simulacra features a complex structure with a core, inner structure, and exterior shell, designed to simulate bone fractures. The exterior shell can be fragmented to represent different types of fractures, such as multifragmentary or articular fractures. A removable matrix within the simulacra supports the structure and can be extracted before a procedure. This setup allows for realistic simulation of bone fractures and their repair.

Sequential Tear Simulation

Another form of the simulacra incorporates flexible connective tissue with predefined voids, which are designed to sequentially tear under stress. This feature is intended to simulate the tearing of ligaments or tendons, providing a realistic model for surgical training. The connective tissue is made from elastomeric materials, enhancing the simulation of anatomical conditions such as ligament or tendon injuries.

Pretensioned Fibers

The simulacra can also include pretensioned fibral elements embedded within a matrix. These fibers, made from materials like nylon or polyester, are placed under tension during the manufacturing process, which limits displacement during use. This feature aids in simulating the behavior of tissues under stress, providing a more accurate training tool for surgeons to practice procedures like tendon repairs.

Applications and Benefits

These 3D printed models offer significant advantages over traditional cadaveric specimens. They can be customized to match the specific anatomy of a patient, providing a more accurate and representative model for surgical planning. Additionally, they eliminate the need for special storage and disposal requirements associated with cadaveric specimens. The ability to practice repeatedly on these synthetic models enhances surgical training and preparation, ultimately improving patient outcomes.