TW201525745A - Establishment of plastic surgery and implants preview model method - Google Patents

Abstract

The present invention provides a establishment of plastic surgery and implants preview model method, using a scanning head for a head and a first head intracranial outer contour profile. Re-use scanning head for a second outer contour of the skull, the skull through the overlap of the first and second outer contour of the outer contour of the skull to form an overlapping contours, according to the establishment of a skull model. And adjust the contour forming a contour overlap region between the head contour, and then adjust the contour area between the inner skull outline it with a cavity formed by stretching. And adjusted according to the contour area, and the cavity to create the outline of a skull model adjustment within the skull, and finally capture three-dimensional data to create a cavity of the implant models.

Description

Method for establishing a prototype surgery preview model and an implant model

The present invention relates to a method of establishing a surgical model, in particular to a method of previewing a surgical effect model and establishing an implant model prior to surgery.

In today's cosmetic surgery and reconstructive surgery, the doctors often implant artificial materials under the skin tissue of the patient's cranial skin to modify the craniofacial skin of the patient for the beauty, congenital craniofacial defect or accidental craniofacial injury. Exterior. Although implants of different sizes are available for physicians to choose from, doctors often have to cut the implants before surgery to meet individual patient differences, but often do not fit the patient, especially implants and cranial skin. The difference in length, width and angle between bones. Secondly, before the operation is completed, it is difficult for the doctor or the patient to foresee the post-surgical effect, and there is often a gap between the subjective and technical ability of the physician, and the patient's expectation, which is very likely to cause controversy between medical treatment and disease. Furthermore, the implant cannot be removed and modified for re-implantation, often allowing the patient to passively accept the surgical result.

Therefore, how to provide a method for establishing a stereotyped surgery preview model and an implant model is one of the current important topics.

The main object of the present invention is to provide a method for establishing a stereoscopic surgery preview model and an implant model, which utilizes three-dimensional scanning and three-dimensional imaging technology combined with computer-aided design, so that the doctor can fine-tune the craniofacial model through the display device, Allows the patient to preview the cranial face The effect of surgery has greatly reduced the controversy between medical treatment.

Another object of the present invention is to provide a method of establishing a surgical preview model and an implant model that can be used to produce an implant that is most suitable for a patient, thereby greatly increasing the satisfaction of the surgery.

In order to achieve the above object, the present invention provides a method for establishing a stereoscopic surgery preview model and an implant model, which utilizes scanning a cranial face to obtain a cranial contour and a first cranial contour; and using scanning Craniofacial to obtain a second cranial contour; and overlapping the first cranial contour and the second cranial contour to form an overlapping contour, thereby establishing a craniofacial model; and contouring and overlapping contours in the craniofacial Forming an adjusted contour region; and stretching the contour region to form a cavity between the contour of the skull; and adjusting the contour region, the contour of the skull, and the cavity to establish an adjusted posterior model; The three-dimensional data of the cavity is captured to create an implant model.

In accordance with an embodiment of the present invention, the forming step of the implant model utilizes a computer numerically controlled machine tool to cut or utilize a 3D printed implant model.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

10‧‧‧Cranio

101‧‧‧Nasal bone

102‧‧‧Nasal cartilage

11‧‧‧Cauline outline

12‧‧‧ First cranial contour

13‧‧‧The second cranial contour

1213‧‧‧Overlapping contours

14‧‧‧Adjust contour area

141‧‧‧ inner surface

15‧‧‧ cavity

10A‧‧‧Cranial model

10B‧‧‧Adjusted cranial model

20‧‧‧ implant model

Figure 1 is a flow chart of the model of the present invention.

2 to 9 are schematic views of an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of establishing an integrative surgical preview model and an implant model in accordance with a preferred embodiment of the present invention will be described with reference to the accompanying drawings, in which the same elements will be described with the same reference numerals.

Referring to FIG. 1 , a flow chart of establishing a surgical model of the present invention shown in FIG. 1 firstly, as in step A, scanning a cranial face to obtain a contour of a cranial face and a first cranial contour, the scanning method includes a computer. Computed Tomography (CT) or Magnetic Resonance Imaging (MRI) scanning.

Thereafter, as in step B, the cranial face is scanned using a 3D scanner to obtain a second cranial contour.

Thereafter, as in step C, the first cranial contour and the second cranial contour are overlapped to form an overlapping contour, and a craniofacial model is established, and the cranial model can be browsed through a display device, and the display device includes a smart phone. , devices such as tablets, laptops, or desktops.

Thereafter, as in step D, an adjusted contour region is formed between the contour of the craniofacial region and the overlapping contour.

Thereafter, as in step E, the stretched contour region is stretched such that the inner surface is in the same direction as the overlapping contour, and a cavity is formed between the inner surface of the adjusted contour region and the inner contour of the craniofacial region. The method of forming the cavity by stretching and adjusting the contour area is by solid modelling, parameterized modelling, computer aided design (CAD), volume rendering or three-dimensional image forming technology. (3D rendering teehniques) and other technologies.

Thereafter, as in step F, an adjusted posterior cranial model is established based on the contour region, the intracranial contour, and the cavity.

Finally, as in step G, use Solid Modelling, Parameteric Modelling, Computer Aided Design (CAD), Volume Rendering, or 3D rendering techniques. And other techniques to capture the three-dimensional data of the cavity to create an implant model, and then use the computer numerical control tool machine to cut or 3D print to complete the implant.

The above is the flow description of the establishment of the whole-type surgical model of the present invention. The rhinoplasty operation will be taken as an example to explain the establishment of the whole-type surgical preview model and the implant model.

Referring to FIG. 2, a patient's cranial face 10 is scanned by magnetic resonance imaging to obtain a cranial contour 11 and a first cranial contour 12, and the intracranial contour 11 includes the nasal bone 101 and the nasal cartilage 102. The surface, the first cranial contour 12 is the surface of the cranial face 10.

Referring to FIG. 3, the skull face 10 is then scanned by a three-dimensional scanner to obtain a second cranial contour 13 composed of a Point Cloud with color and light and darkness.

Referring to FIGS. 4 and 5, the first cranial outline 12 and the second cranial outline 13 are then overlapped to form an overlapping contour 1213, and a cranial model 10A having color and light and dark is created to The image close to the solid cranial face 10 is imaged, and through a display device, such as a smart phone, a tablet computer, a notebook computer or a desktop computer, the physician and the patient can view the embedded bone and cartilage, and the appearance has Color information (RGB) 3D craniofacial model 10A (ie patient pre-operative appearance).

Referring to FIG. 6, an adjustment contour region 14 is formed between the intracranial contour 11 and the overlapping contour 1213, and the marked contour region 14 is substantially covered by skin and the like. The soft tissue above the nasal bone 101 and the nasal cartilage 102 has a certain ductility.

Referring to Figure 7, the physician then stretches the contour area 14 on the screen with a cursor or finger to make the bridge of the nose high and straight, so that the inner surface 141 is interlocked with the overlapping contour 1213, and the contour is adjusted while stretching. A cavity 15 is formed between the inner surface 141 of the region 14 and the intra-cranial contour 11 . The cavity 15 is equivalent to peeling off the soft tissue covering the hard bone and the cartilage during surgery, so that a gap is formed between the inner surface of the soft tissue and the hard bone and the cartilage. The volume of the cavity 15 formed by the gap is the volume of the implant.

Referring to FIG. 8, the adjusted contour area 14, the intracranial contour 11 and the cavity 15 are then used to establish an adjusted craniofacial model 10B, and the effect of the adjusted (ie, the patient's appearance after surgery) is displayed through the display device. Preview for physicians and patients.

Referring to FIG. 9, finally, the three-dimensional data of the cavity 15 is taken to create an implant model 20, and then the implant model 20 is cut by a computer numerical control tool machine or 3D printing. Things.

In summary, the method for establishing a prototype surgery preview model and an implant model of the present invention enables a physician to fine-tune the craniofacial model through the display device, and at the same time allows the patient to preview the effect of the cranial complex surgery, thereby greatly reducing the medical condition. The controversy can also make the most suitable implant for the patient, greatly improving the satisfaction of the operation, not only for rhinoplasty, but also for reconstruction of the chin surgery, congenital craniofacial defect or craniofacial injury. Intensive surgery.

The above description is intended to be illustrative, and not restrictive, and all modifications and variations are intended to be included within the scope of the appended claims.

10‧‧‧Cranio

11‧‧‧Cauline outline

12‧‧‧ First cranial contour

13‧‧‧The second cranial contour

14‧‧‧Adjust contour area

15‧‧‧ cavity

20‧‧‧ implant model

Claims (9)

A method for establishing a stereoscopic surgery preview model and an implant model includes the following steps: A scanning a cranial face to obtain a cranial contour and a first cranial contour; B scanning the cranial face to obtain a a second cranial contour; C overlapping the first cranial contour and the second cranial contour to form an overlapping contour and establishing a craniofacial model; D between the intracranial contour and the overlapping contour Forming an adjusted contour area; E stretching the adjusted contour area to form a cavity with the inner contour of the craniofacial; F according to the adjusted contour area, the inner contour of the craniofacial and the cavity to establish an adjusted posterior cranial face Model; and G captures the three-dimensional data of the cavity to create an implant model. The method for establishing an integer surgery preview model and an implant model according to claim 1, wherein in the step A, the computer model is scanned by a computed tomography or a nuclear magnetic resonance imaging method to obtain the intracranial The contour and the first cranial contour. The method for establishing an integer surgery preview model and an implant model according to claim 1, wherein in the step B, the cranial face is scanned by a three-dimensional scanner to obtain the second cranial contour. The method for establishing an integer surgery preview model and an implant model according to claim 1, wherein in the step C, the craniofacial model can be browsed through a display device. The method for establishing an integer surgery preview model and an implant model as claimed in claim 4, wherein the display device is a smart phone, a tablet computer, a notebook computer or a desktop computer. The method for establishing an integer surgery preview model and an implant model according to claim 1, wherein in the step E, the adjusted contour region is stretched while the inner surface of the adjusted contour region is in the same direction as the overlapping contour Gearing. In the method of claim 1, the method for establishing an integer surgery preview model and an implant model is performed. In the step E, the cavity mode is formed by using solid modeling, parametric modeling, computer-aided design, stereoscopic rendering or three-dimensional rendering. Like technology. The method for establishing an integer surgery preview model and an implant model according to claim 1, wherein in the step G, the three-dimensional data system that captures the cavity utilizes solid modeling, parametric modeling, computer-aided design, Stereo rendering or 3D rendering technology. The method for establishing an integer surgery preview model and an implant model according to claim 1, further comprising the step of molding the implant model, which uses a computer numerical control machine tool to cut or print the implant using 3D. model.