Method for manufacturing navigation template of human bone surgery and female die thereof

Abstract

The invention discloses a method for manufacturing a navigation template of human bone surgery and a female die thereof. The method comprises the following steps of: a, acquiring raw data of a patient bone, and establishing a three-dimensional model on a computer; b, analyzing the three-dimensional model, extracting a bone curve image near a surgical screw inlet part, and designing a screw positioning rod; c, establishing a reverse template fitted with a bone curve near the surgical screw inlet part to make the screw positioning rod matched with the reverse template through reverse engineering software, establishing a three-dimensional model of the female die of the surgical navigation template, and manufacturing a physical model of the female die; and d, pouring biomedical materials into the physical model of the female die to make the bottom three-dimensional shape of the biomedical material model fitted and consistent with the bone curve near the surgical screw inlet part, and hardening to form the biocompatible navigation template of human bone surgery. The biocompatible navigation template of the human bone surgery manufactured by the invention makes the surgery safer and achieves better effect.

Description

technical field [0001] The invention relates to a medical operation auxiliary model and its manufacturing method, in particular to a manufacturing method of a navigation template for human orthopedic surgery and the structure of the female model. Background technique [0002] At present, implants are used more and more in orthopedic surgery. Generally speaking, the accurate placement of screws in orthopedic implant surgery is the most important for surgical safety, such as spinal trauma reduction, deformity correction and other operations, generally use Pedicle screw internal fixation surgery, but because the inner side of the pedicle is the spinal canal that runs along important structures such as the spinal cord, once the pedicle screw is implanted into the spinal canal, it will cause spinal cord injury and cause paralysis, incontinence and other complications. Moreover, from the lumbar spine up, the cross-sectional diameter of the pedicles of the thoracic and cervical spi...

AI Technical Summary

Problems solved by technology

So far, the materials used in various rapid prototyping equipment are not biologically safe and unsafe to human tissue, and the technology described in this invention patent requires the reverse navigation template produced by the rapid prototyping machine to be directly used with the patient for surgery The bone surface is attached and implanted into the human body, which shows that this method is potentially dangerous

[0005] In addition, the above-mentioned invention is only applicable to the production of navigation templates for pedicle positioning, and there is no explanation for the production of navigation templates for orthopedic surgery in other parts of the human body, and there is a lack of general-purpose navigation template production molds.

In particular, the position and angle of the surgical screw have not been analyzed in conjunction with the human bone situation, which lacks practical operability

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