一,Technological adaptation: the fundamental metal 3D printing printing
Metal 3D printing techniques, such as direct metal laser sintering (DMLS) and electron beam melting (EBM), construct complex structures with highly matched technical features to meet the demands of surgical navigation tools.
Complex geometric forming allows for the printing of hollow grids, spiral channels, and other constructions, resulting in lightweight and multifaceted integration.
Medical metal printing includes titanium alloy, cobalt chromium alloy, stainless steel, etc.; material variety supports
Controllable surface quality: get a flat surface with Ra0.8 μm by means of parameter optimisation.
Within 24 hours, they create and produce the design based on the patient's CT/MRI data.
二, Clinical application: thorough empowerment, including orthopaedics to neurology.
1. Orthopaedic navigation template: "GPS" for screw insertion
Typical problems: screw deviation resulting from variations in prefabricated templates and bone shape;
Create patient-specific guide plates based on 3D reconstruction and set screw channels (accuracy ± 0.3mm);
According to clinical data from Shanghai Sixth Hospital, 3D-printed guide plates have increased spinal screw placement accuracy from 78% to 95%;
The guide plate incorporates fiber-optic sensors to track drilling depth in realtime, enabling innovative design.
The "Big Dipper" of cranial surgery: the neurosurgical positioning frame
Technical challenges: The complex architecture of the brain makes it challenging to precisely locate deep lesions using conventional models;
Print a customised headstock using a 3D printing solution, together with an optical navigation system with an inaccuracy of 0.5mm;
Material breakthrough: printing a mesh structure from cobalt chromium alloy guarantees strength and lowers artefact interference by use of this material;
Case: Using a 3D-printed positioning frame, Beijing Temple of Heaven Hospital finished the first implantation of a deep brain stimulator, therefore saving forty percent of surgical time.
Orthopaedic osteotomy guide plate: the "designer" of facial reconstruction
Characteristics of a requirement: have to concurrently satisfy functional and aesthetic reconstruction needs;
The 3D printing solution allows patients to preview before surgery, print osteotomy path guide plates, and simulate the postoperative effect.
Material advantage: Sterilisation allows for repeated use of the titanium alloy guide plate, saving 70% of costs.
https://www.china-3dprinting.com/metal-3d-printing/slm-3d-printing-hydraulic-valve.html