TWI693922B - Preparation method of bone defect bone guide device - Google Patents

Abstract

The present invention aims to disclose a method for preparing a bone defect bone guide device, which provides a scanned image including a normal bone area and a bone defect area; reading the scanned image to reconstruct a three-dimensional image; a mirror Generate a composite image from the normal bone area of the three-dimensional image to the bone defect area; analyze the contours of the normal bone area and the bone defect area according to the composite image to obtain a bone reconstruction data; and construct based on the bone reconstruction data At least one bone guide and other steps complete the technical means of the present invention. In this way, the implants/prosthesis needed for joint replacement surgery are prepared.

Description

Preparation method of bone defect bone guide device

The invention relates to a preparation method, in particular to a preparation method of an instrument for bone guidance directed at a bone defect area.

When the hip bone is damaged due to an accident or artificial habits, injuries such as fractures or bone defects will occur. For the treatment of this symptom, surgical implantation of prosthesis combined with screw fixation to the affected part is required to repair the hip joint that has been diseased or externally damaged, thereby restoring the original function of the site.

The replacement of the artificial hip joint is caused by loosening, abrasion, infection or other reasons of the originally installed artificial joint. It is necessary to perform the operation again based on the needs of life activities. Check, artificial hip replacement is made of materials suitable for the human body to make hip implants, through the medical team's anatomical knowledge and clinical surgery experience to evaluate how to perform joint replacement.

The replacement of artificial hip joints in clinical operations will still encounter the following problems to be improved:

1. The amount of bone defect cannot be accurately assessed before preoperative planning. Due to the conventional artificial hip replacement surgery, the X-ray images or/and CT images obtained from the affected part are observed, supplemented by the doctor's professional knowledge and clinical surgical experience for surgical evaluation, so there is less scientific and complete and clear amount The position measurement method can reliably obtain the quantitative data of the bone filling area. The reason is that the bones are not just a regular, single-curved appearance, but also the shape of the bones developed will also change due to the difference in individual height and skeleton. Therefore, the diagnostic maps obtained through medical scanning instruments are not yet available. Meet the actual needs of surgery.

2. The problem of metallic image interference. At present, before the artificial joint replacement surgery, most of them still use 2D plane X-ray images as the reference basis for surgical planning; however, the metal hip implant on the replacement area will cause the image to have metal scattering due to the shooting process, and then It is easy for the postoperative hip joint to be placed in the wrong position, resulting in the regret of the long and short feet after the operation. Therefore, how to reduce the misinterpretation of medical staff and related equipment caused by the scattering of metal implants is still an important issue for clinical discussion.

For this reason, the present inventors made improvements in view of the problems derived from the above, I thought about the development of solutions with the idea of invention improvement, and after a long time, the preparation method of the bone defect guide device of the present invention was produced , To serve the public and promote the development of this industry.

An object of the present invention is to provide a method for preparing a bone defect bone guide device, which receives a scanned image through a processing device, sequentially reconstructs a three-dimensional image, generates a composite image, and obtains bone reconstruction data, and transmits it to the processing device The bone guide is made to effectively improve the success rate of the operation of the implanted prosthesis, reduce the surgical judgment process, and reduce the operating time of the surgery.

An object of the present invention is to provide a method for preparing a bone defect bone guide device, which uses a processing device to improve the noise problem of traditional scanned images, and further processes the image scattering area to truly show the bones belonging to the real symptoms The defect area and its relative normal bone area are useful for comparing the data required for the interpretation of the bone filling area, according to which a bone guide that conforms to the joint replacement surgery is manufactured.

In order to achieve the above-mentioned purposes and effects, the present invention discloses a method for preparing a bone defect bone guide device, which comprises: a method for preparing a bone defect bone guide device, which comprises: providing a scanned image, It includes a normal bone area and a bone defect area; reading the scanned image to reconstruct a three-dimensional image; mirroring the normal bone area of the three-dimensional image to the bone defect area to generate a composite map; analyzing based on the composite map Obtaining a bone reconstruction data from the contours of the normal bone area and the bone defect area; and constructing at least one bone guide according to the bone reconstruction data.

In addition, the present invention discloses a method for preparing a bone defect bone guide device, which includes: providing a scan image including a bone defect area and a normal bone area; reading the scan image to reconstruct a three-dimensional image; Mirroring the bone defect area of the three-dimensional image to the normal bone area to generate a composite image; analyzing the outlines of the bone defect area and the normal bone area based on the composite image to obtain bone reconstruction data; and based on the bone reconstruction data Construct at least one psoralen guide.

In order to have a further understanding and understanding of the features of the present invention and the achieved effects, only the examples and accompanying drawings are used, the description is as follows:

In the following, various embodiments of the invention will be illustrated by the drawings to describe the invention in detail; however, the concept of the invention may be embodied in many different forms and should not be construed as being limited to the examples set forth herein Examples.

The flow of the method for preparing the bone defect bone guide device of the present invention is described here. Please refer to the first figure, which is a flowchart of the first embodiment of the method for preparing the bone defect bone guide device of the present invention. As shown in the figure, the preparation method of the bone defect bone guide device of this embodiment includes the following steps: Step S10: providing a scanned image including a normal bone area and a bone defect area; Step S12: reading The scanned image reconstructs a three-dimensional image; Step S14: Mirror the normal bone area of the three-dimensional image to the bone defect area to generate a composite image; Step S16: Analyze the normal bone area and the bone defect based on the composite image The outline of the area obtains a bone reconstruction data; and Step S18: Construct at least one bone guide according to the bone reconstruction data.

The following is a description of the required structural components for the preparation method of the bone defect repairing and guiding device of the invention, please refer to the second figure, which is a schematic structural view of the preparation method of the bone defect and repairing and guiding device of the present invention. As shown in the second figure, the required structure of the method for preparing a bone defect bone guide device of the present invention includes: a scanning device 10, a processing device 12, and a processing device 14, the scanning device 10 is electrically connected to the processing device 12 The processing device 12 is electrically connected to the processing device 14. The scanning device 10 transmits one of the scanned images 100 obtained by scanning the affected part to the processing device 12. The processing device 12 reads the scanned image 100 to reconstruct a three-dimensional image 120, generates a composite image 122, and obtains bone reconstruction data 124. The processing device 14 receives the bone reconstruction data 124 and constructs at least one bone guide 140.

The above-mentioned scanning device 10 is an X-ray (X-ray) instrument, a Computed Tomography (CT) instrument or an X-ray Computed Tomography (X-CT) instrument. The scanned image 100 is an X-ray image (or X-ray image), a computed tomography image (or CT image), or a 2D/3D medical image of an X-ray computed tomography image (or X-CT image). Image map.

The above-mentioned processing device 12 is a programming software installed on a computer, which has the functions of improving the noise problem such as reading the scanned image 100 into a three-dimensional image 120 and the image scattering of the scanned image 100, and mirroring part of the three-dimensional image 120 , All areas of the image (such as the built-in mirroring and drawing elements and graphics options in the drawing software), synthesis-related images are integrated into a synthesis map 122, and analysis and calculation of bone defect data required for bone defect and other functions. That is to say, the processing device 12 of the present invention is an image format produced between integrated devices that can be transmitted, displayed, and has related operating functions attached to the drawing software, as well as calculation, analysis, and image processing. The bone defect data.

The above-mentioned processing device 14 can be a 3D printing device, or other person with ordinary knowledge in the field of the technology, and can also construct a bone guide 140 based on the bone reconstruction data 124. This is limited.

Referring back to the first and second figures, the following will describe the process performed by the method for preparing the bone defect bone guide device of the present invention, and the description example will be described for the purpose that the left hip joint of the patient needs to be replaced with a prosthesis. First, the scanning device 10 scans the affected part (pelvic area) of a patient to generate a scanned image 100 (as in step S10); where the scanned image 100 is concerned, the hip joint area on the left belongs to the bone defect area, and the hip on the right The joint belongs to the normal area of the bone, and the appearance is a pair of bone contours with the central axis of the trunk (that is, the left and right pairs of hip images), that is, the human or animal has several pairs of existence The bone structure, and the bones of the left and right parts defined by the central axis of the body are the scanned image 100 described in the present invention. Of course, in order to facilitate the subsequent creation of the three-dimensional image 120, the scanned image 100 can also capture the affected part from various angles to improve the integrity of the establishment of the three-dimensional image 120.

Subsequently, the processing device 12 reads the scanned image 100 to reconstruct the three-dimensional image 120 (as in step S12). For example, the scanned image 100 is an X-ray image. It is not easy to produce a sense of space in terms of a two-dimensional image, and it is impossible to comprehensively observe the overall condition of the skeleton. Therefore, it is necessary to reconstruct the scanned image 100 into a three-dimensional image 120 to facilitate subsequent equipment Follow the steps below. When the three-dimensional image 120 is established, it shows that the hip joint of the left pelvic region has a defect state (bone defect region) based on the central axis of the trunk, and the hip joint of the right pelvic region is a normal state (normal bone region). The processing device 12 then mirrors the normal bone area of the three-dimensional image 120 to the bone defect area to generate a composite image 122 (as in step S14). The area to the bone defect area is a composite image obtained by superimposing the image of the normal hip joint on the right side of the patient to the image of the hip joint on the left side. In this way, the processing device 12 analyzes the contours of the normal bone area and the bone defect area according to the synthetic map 120 to obtain a bone reconstruction data 124 (step S16). Since the hip joint of the human/animal is almost a relative and identical bone, the processing device 12 mirrors the normal bone area to the bone defect area to generate a composite image 120, and then analyzes the bone defect area and the normal bone area through the processing device 12 The bone contour difference between them, and then calculate the bone filling data required for the bone defect area of the left affected part; where, the bone reconstruction data 124 can be presented numerically or graphically, as long as the processing device 14 can receive and process Any method is acceptable, not limited to this.

Finally, the processing device 12 can output the bone reconstruction data 124 generated by the analysis calculation to the processing device 14, and the processing device 14 constructs the bone guide 140 required by the left affected part according to the bone reconstruction data 124. The bone guide 140 has at least one acetabular cup (not shown), a plurality of locking holes (not shown), and guide holes (not shown). The acetabular cup is used to fix the acetabulum The bones or components of the cup, the locking holes combined with screws and other parts are used to effectively fix the bone guide 140 to the affected part, or the bone adjacent to the affected part to support the bone guide 140, the guide hole It is used to fill the bone defect material from the guide hole to the bone defect area. Therefore, the bone guide 140 constructed by the preparation method of the present invention has been evaluated in detail according to the bone defect area, and has become an optimized prosthesis for hip replacement surgery. There is no need for the medical team to spend time to determine whether the prosthesis and the affected part are fully fitted during the operation, or need to perform secondary processing on the prosthesis to fit in the affected part. Shida can significantly improve the postoperative length and length of the prosthesis. The discomfort of friction with human tissues, and the advantages of shortening the operation time and reducing risks.

Here, another process of the preparation method of the bone defect bone guide device of the present invention is described. Please refer to the third figure, which is a flowchart of the second embodiment of the preparation method of the bone defect bone guide device of the present invention. As shown in the figure, the preparation method of the bone defect bone guide device of this embodiment includes the following steps: Step S10: providing a scanned image including a normal bone area and a bone defect area; Step S12: reading The scanned image reconstructs a three-dimensional image; Step S13: Process an image scattering area of the scanned image, so that the three-dimensional image generates the normal bone area and the bone defect area that do not include the image scattered area; Step S14: Mirroring the normal bone area of the three-dimensional image to the bone defect area to generate a composite map; Step S16: Analyze the contours of the normal bone area and the bone defect area according to the composite map to obtain a bone reconstruction data; and Step S18 : Constructing at least one bone-filling guide according to the bone reconstruction data.

Please also refer to the fourth figure, which is a schematic diagram of a bone defect image according to a second embodiment of the preparation method of the bone defect bone guide device of the present invention. The second embodiment of the present invention is similar to the first embodiment in that it further includes step S13. If the patient's affected part (hip joint) has been examined and the metal implants already present in the previous operation have been used, the medical scanning instrument (scanning device 10) is used to scan the affected part, which is likely to be affected by the metal implants. This causes a scattering problem in the scanned image 100. As shown in the fourth figure, the scanning device 10 (X-ray instrument) photographs the affected part of the patient. The hip joint in the left pelvis area has undergone an artificial joint insertion operation and has a metal implant, so when scanning The scanned image 100 acquired by the device 10 has a metal scattering phenomenon, which is likely to affect related facilities or physicians to judge symptoms. Therefore, in step S13 of the second embodiment of the present invention, the scanned image 100 is read through the processing device 12 and it is found that there is an image scattering problem. For this problem, first, mean filter (Mean Filter), Gaussian filter (Gaussian Filter), Median filter or one of the above groups can solve the problem of image scattering area, so that the reconstructed three-dimensional image 120 can completely show the normal bone area and bone defect area. The image scattering interference affects the interpretation of the processing device 12.

In addition, the mean value filtering is to disperse the noise in the image scattering area to the background value to improve the signal-to-noise ratio, and its technical means are often applied to the desired signal with continuous characteristics. Gaussian filtering is to neutralize the noise in the image scattering area with the weight and to retain a certain degree of original features. Its technical methods are often applied to smaller noise. Median filtering is a non-linear digital filter technology, which is often used to remove noise (such as speckle noise) in images or other signals, so as to preserve the structural characteristics of bone edges by filtering techniques. Here, the processing device 12 uses these filtering combinations to filter noise and improve the signal-to-noise ratio of the image scattering area of the scanned image 100.

Here is another flow of the preparation method of the bone defect bone guide device of the present invention. Please refer to the fifth figure, which is a flow chart of the third embodiment of the preparation method of the bone defect bone guide device of the present invention. As shown in the figure, the preparation method of the bone defect bone guide device in this embodiment includes the following steps: Step S10: providing a scanned image including a bone defect area and a normal bone area; Step S12: reading The scanned image reconstructs a three-dimensional image; Step S14': Mirroring the bone defect area of the three-dimensional image to the normal bone area to generate a composite image; Step S16: Analyzing the bone defect area and the bone according to the composite image Obtain a bone reconstruction data from the contour of the normal area; and Step S18: Construct at least one bone guide according to the bone reconstruction data.

The difference between the third embodiment of the present invention and the first embodiment lies in step S14', that is, step S14 of the first embodiment is to mirror the image of the normal bone area of the three-dimensional image 120 to the bone defect area to generate a composite image 122, and step S14' of the third embodiment is to mirror the image of the bone defect area of the three-dimensional image 120 to the normal bone area to generate a composite image 122. The remaining steps and implementations are the same and will not be repeated. Furthermore, the third embodiment of the present invention can also be the same as the second embodiment, and has step S13, which is not limited thereto.

The present invention has indeed achieved the intended use purpose and efficacy, and is more ideal and practical than the conventional art; however, the above embodiments are only specific descriptions of the preferred embodiments of the present invention and are not intended to limit the application of the present invention The scope of patents, including all other equivalent changes and modifications without departing from the technical means disclosed by the present invention, should be included in the scope of patent applications covered by the present invention.

10: Scanning device 100: Scanned image 12: Processing device 120: 3D image 122: Composite image 124: Bone reconstruction data 14: Processing device 140: Psuturing guide S10: Step S12: Step S13: Step S14: Step S14’: Step S16: Step S18: Step

The first figure: it is the flow chart of the first embodiment of the preparation method of the bone defect bone guide device of the invention; the second figure: the schematic diagram of the preparation method of the bone defect bone guide device of the invention; the third Figure: It is the flow chart of the second embodiment of the preparation method of the bone defect bone guide device of the present invention; Figure 4 is the scanned image of the second embodiment of the preparation method of the bone defect bone guide device of the present invention Schematic diagram; and FIG. 5: It is a flow chart of the third embodiment of the preparation method of the bone defect bone guide device of the present invention.

S10: Step

S12: Step

S14: Step

S16: Step

S18: Step

Claims (10)

A method for preparing a bone defect bone guide device includes: providing a scanned image including a normal bone area and a bone defect area; reading the scanned image to reconstruct a three-dimensional image; processing the scanned image An image scattering area, so that the three-dimensional image generates the normal bone area and the bone defect area excluding the image scattering area; mirroring the normal bone area of the three-dimensional image to the bone defect area to generate a composite image; Analyze the contours of the normal area of the bone and the area of the bone defect according to the composite image to obtain a bone reconstruction data; and construct at least one bone guide according to the bone reconstruction data. A method for preparing a bone defect pulsating guide device as described in item 1 of the patent scope, wherein in processing an image scattering area of the scanned image, the three-dimensional image is generated without the bone of the image scattering area being normal In the step of the region and the bone defect region, the image scattering region is processed by one of the group consisting of mean filtering, Gaussian filtering, median filtering, or any combination of the above. The method for preparing a bone defect padded guide device as described in item 1 of the patent application scope, wherein the three-dimensional image is generated by the step of generating a composite image from the normal bone area of the three-dimensional image to the bone defect area In one of the images, the central axis of the torso refers to the normal area of the bone to the area of the bone defect. The method for preparing a bone defect pulsating guide device as described in item 1 of the patent application scope, wherein the scanned image is a pair of bone contour maps with the central axis of the trunk. The method for preparing a bone defect padded guide device as described in item 1 of the patent application scope, wherein the scan image is an X-ray image or computed tomography image or X-ray computed tomography image. A preparation method of a bone defect bone guide device includes: providing a scanned image including a bone defect area and a normal bone area; reading the scanned image to reconstruct a three-dimensional image; Processing an image scattering area of the scanned image, so that the three-dimensional image generates the bone defect area and the normal bone area that do not include the image scattering area; mirrors the bone defect area of the three-dimensional image to the normal bone area Generating a synthetic map; analyzing the contours of the bone defect area and the normal area of the bone according to the composite map to obtain a bone reconstruction data; and constructing at least one bone guide according to the bone reconstruction data. A method for preparing a bone defect padded guide device as described in item 6 of the patent scope, wherein in processing an image scattering area of the scanned image, the three-dimensional image is generated to generate the bone defect excluding the image scattering area In the step of the area and the bone normal area, the image scattering area is processed by one of a group consisting of mean filtering, Gaussian filtering, median filtering, or any combination of the above. A method for preparing a bone defect padded guide device as described in item 6 of the patent application scope, wherein the three-dimensional image is generated by the step of generating a composite image from the bone defect area of the three-dimensional image to the normal bone area The central axis of the torso in one of the images refers to the area from the bone defect to the normal area of the bone. The method for preparing a bone defect padded guide device as described in item 6 of the patent application scope, wherein the scanned image is a pair of bone contour maps centered on the trunk axis. The method for preparing a bone defect bone guide device as described in item 6 of the patent application scope, wherein the scan image is an X-ray image or computed tomography image or X-ray computed tomography image.

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