Metal guide plate capable of improving screw-setting precision in spinal operation and manufacturing method of metal guide plate

Abstract

The invention discloses a metal guide plate capable of improving screw-setting precision in a spinal operation and a manufacturing method of the metal guide plate. The manufacturing method mainly comprises steps as follows: target spine model data of a patient are extracted through segmentation editing processing on the basis of CT (computed tomography) / MRI (magnetic resonance imaging) scanned original data about the spine of the patient; CAD (computer-aided design) data are imported into Geomagic, an instruction for removing noisy points in bones is performed, and a three-dimensional solid is obtained; a screw implanting route is simulated on the extracted spine model, a curved surface contacted with the spine is extracted according to the shape and the position of the spine and is sheared with a rectangle, and an operation guide plate matched with a contact part in shape is obtained; positions of guide holes and positioning holes are determined; a three-dimensional CAD data model of a spine implant prosthesis is imported into Magics 17.0 for treatment, a multi-layer slicing two -dimensional CAD data model file of the spine implant prosthesis is obtained and imported into 3D printing equipment, and the operation guide plate is obtained. According to the manufacturing method, the situation that a surgeon depends on traditional experience or expensive equipment such as a navigation system and the like is avoided, the surgeon does not depend on fluoroscopy during an operation and is not affected by posture changes, a learning curve is shortened, and marks are reduced.

Description

technical field [0001] The invention relates to medical device components based on metal 3D printing, in particular to a metal guide plate for improving the accuracy of nail placement in spinal surgery and a manufacturing method thereof. Background technique [0002] Spine surgery is the cutting-edge field of orthopedic surgery. The spinal canal of the spine contains the spinal cord, and the spine is surrounded by important blood vessels. The surgical operation must be accurate to ensure the safety of the operation. In traditional spinal surgery, the pedicle probe is usually used to establish the screw channel. The trocar has a blunt tip and a tapered shape, so it can avoid drilling too deep while drilling through the cancellous bone of the pedicle. The operator's judgment on the position of the pedicle screw placement often depends on the operator's own experience: if the probe is difficult to advance, then the front may be cortical bone; on the contrary, if the front block...

AI Technical Summary

Problems solved by technology

In clinical applications, 3D printers made of non-metallic materials can only replicate the patient's spine model for surgeons to observe and compare operations. They cannot customize personalized surgical tools and surgical implants for surgical use through 3D technology.

In addition, although the navigation template printed with resin material is low in cost for making speed blocks, the navigation template made of resin material has the following defects: ① The printing accuracy of the resin template is poor, the gap between the template and the metal drill bit is large, and the navigation deviation is large. Big

②The texture of the template is relatively brittle, and it is easy to be damaged or deformed during the surgical disinfection process; ③The template needs to be held and fitted by hand during the use process, and it cannot be fixed and fully fitted with the bone

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