Method for preparing to-be-repaired skull flap by 3D printing

Abstract

The invention discloses a method for preparing a to-be-repaired skull flap by 3D printing. The method comprises the following steps: three-dimensionally scanning an original flap at a to-be-repaired skull defect part to obtain the three-dimensional data of surface points of an original flap entity; generating a skull flap three-dimensional model matched with the original flap; forming 8-16 drainage holes in the model and circumferentially and uniformly arranging a plurality of tabs protruding from the skull flap edge along the skull flap three-dimensional model; taking medical photosensitive resin as a raw material, and printing the raw material by a 3D printer to obtain a medical resin flap; finally, fixing the resin flap and the to-be-repaired skull by a tapping screw. Through adoption of the method, the medical resin flap matched with the height of the skull defect window of a patient can be prepared, secondary molding is not required in operation, and the operation time is shortened. The medical resin flap is light in weight, solid, excellent in impact resistance, low in heat-conducting property, and heat-insulating, and reduces discomfort caused after head operation.

Description

technical field [0001] The invention relates to a method for preparing a skull bone flap for repair, in particular to a method for preparing a skull bone flap to be repaired by using 3D printing. Background technique [0002] Skull defects caused by various reasons are very common in clinical practice, especially in the treatment of severe craniocerebral trauma. The guidelines for the treatment of craniocerebral trauma in various countries recommend standardized decompression of large cranial craniectomy combined with evacuation of intracranial hematoma as the preferred treatment method , because the removal of the skull flap can very effectively reduce the intracranial pressure, so as to reduce the compression on the life center of the brainstem and save the patient's life. Therefore, after a large number of patients with severe craniocerebral trauma are surgically treated, many patients with skull defects will be left clinically. [0003] Although the removal of the skull...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of existing cranial repair methods, such as the difference between the repaired skull flap made of titanium alloy mesh and the original bone flap, insufficient strength, poor thermal insulation, and high cost, and to provide a low-cost , a method with good effect of using 3D printing to prepare the skull flap to be repaired

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