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Skull guiding formwork for calvarium reconstruction surgery and manufacturing method of skull guiding formwork

A technique of surgical operation and manufacturing method, applied in the direction of surgery, medical science, etc., can solve the problems of bone flap damage and unfavorable healing, and achieve the effect of reducing damage, facilitating recovery, and avoiding important anatomical structures

Inactive Publication Date: 2012-07-04
徐州冠珂工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the prior art that may cause excessive cutting of the skull and cause great damage to the bone flap, which is not conducive to postoperative healing, the present invention provides a method that can protect important anatomical positions during the operation without causing damage to the bone flap. Skull-guided template for cranial top reconstruction surgery for over-cutting of bone flap, conducive to postoperative recovery and healing, and manufacturing method thereof

Method used

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  • Skull guiding formwork for calvarium reconstruction surgery and manufacturing method of skull guiding formwork
  • Skull guiding formwork for calvarium reconstruction surgery and manufacturing method of skull guiding formwork
  • Skull guiding formwork for calvarium reconstruction surgery and manufacturing method of skull guiding formwork

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Effect test

Embodiment 1

[0053] The manufacturing method of the skull guide template used for skull top reconstruction surgery includes the following steps:

[0054] 1) Scan the patient's head with a three-dimensional CT scanning device or MRI device to obtain image data containing the patient's head information, filter out the skull data from the image data of the head information, and establish a three-dimensional contour model of the patient's skull;

[0055] 2) Compare the three-dimensional contour model of the patient's skull with the normal skull model, make the three-dimensional contour model of the patient's skull meet the appearance requirements of the normal skull through geometric transformation, and use the geometrically transformed three-dimensional model as the surgical target model;

[0056] 3) Determine the cutting route of the craniotomy, the number of bone flaps that need to be cut, and the shape of the bone flap. The cutting route avoids parts that do not need to be separated and important ...

Embodiment 2

[0075] The present invention will be specifically described in conjunction with cases of megacranial disease:

[0076] in Figure 1A with Figure 1B In the middle, the anatomical structure of the normal skull is shown. The frontal bone 1, the parietal bone 2 and the occipital bone 3 constitute the top of the skull. Figure 1C It shows the difference between the skull top of patients with megacephaly and normal people. Border 13 is the outline of the skull of patients with megacephaly, and border 14 is the outline of the skull of normal people. The purpose of reconstructive cranial cranioplasty surgery is to reduce the 13 craniopia contour to the 14 normal craniopia contour.

[0077] figure 2 The digital design method of cranial parietal reconstruction surgery and the design method process of cutting guide template stated in the present invention are described in detail.

[0078] According to the present invention, the patient needs to take CT or MRI to obtain such Figure 3A As shown...

Embodiment 3

[0086] Combining the cases of patients with oblique head, further illustrate the present invention:

[0087] Figure 14 describes the purpose of plastic surgery by adjusting the bone flap of the patient with oblique head. The morphology of the top 16 of the skull shown in 14A is not good, and the frontal bone 1 is not full. The CT data of the patient is reconstructed. Figure 14B What is shown is the shape obtained after simulating the postoperatively, which can be achieved by adjusting the position of the bone flap on the top of the skull. The original bone flap at the position of the bone flap 26 and the bone flap 27 can be interchanged and adjusted to Figure 14B The position shown, and the coronal suture 5 was reconstructed. The guide template is generated by extracting the outer surface of the bone flap 26 and the bone flap 27, and the guide template is processed by laser sintering technology, Figure 14C What is shown is that the doctor covers the guide template 26-g on the f...

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Abstract

Disclosed is a manufacturing method of a skull guiding formwork for calvarium reconstruction surgery. The manufacturing method includes building a three-dimensional outline model of a skull of a patient; predicting a surgical objective model; determining a cutting path of craniotomy and the quantity and the shapes of bone flaps required to be cut and cutting and obtaining the bone flaps according to the cutting path; building a three-dimensional cutting guiding formwork model; designing splicing structures among the bone flaps and building a three-dimensional splicing guiding formwork model; and manufacturing a cutting guiding formwork and a splicing guiding formwork according to the cutting guiding formwork model and the splicing guiding formwork model. The skull guiding formwork for calvarium reconstruction surgery comprises the cutting guiding formwork and the splicing guiding formwork, and an outline of an edge of a cutting guiding formwork body shows the cutting path during surgery; and a mortise connecting structure which is spliced with the adjacent splicing guiding formwork or a skull base is arranged at the outer edge of a splicing guiding formwork body. The manufacturing method has the advantages that important anatomy position can be protected during surgery, excessive cutting to the bone flaps is avoided, and the manufacturing method is favorable for postoperation recovery and healing.

Description

Technical field [0001] The invention relates to a skull guide template used for skull top reconstruction surgery and a manufacturing method thereof. technical background [0002] Reconstruction of the top of the skull to achieve the purpose of skull shaping, the most critical technique is to redesign the original skull, that is, segmentation, excision and splicing to achieve the effect of shaping. The current cranial roof design relies on three-dimensional CT to judge the condition of the cranial roof deformity, and designs the cutting shape and route on the two-dimensional CT film or paper based on the doctor’s experience, and then adjusts the cutting shape and the actual situation during the operation. Route and splicing method. This conventional method has many problems: some skull roof reconstructions do not necessarily require cutting and splicing all the skull bones, only part of the skull bones are cut, separated and spliced, so it is difficult to design the plan before s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56
Inventor 姜献峰游嘉彭伟
Owner 徐州冠珂工程科技有限公司
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