阅读说明：本技术 一种儿童鼻中隔偏曲矫正器 (Nasal septum deflection corrector for children ) 是由 冯晓 冯柯 李冠华 张彤 于 2020-05-19 设计创作，主要内容包括：本发明属于医疗器械技术领域,公开了一种儿童鼻中隔偏曲矫正器,该儿童鼻中隔偏曲矫正器包括前期利用HRCT后处理mimics3D成像系统计算鼻中隔偏曲的角度和所需要牵引的力度和方向,后期通过一种包括头部固定带、提拉带及鼻部固定器的装置进行矫正,提拉带上端与头部固定带中间固定连接。本发明利用骨发育的可塑性对鼻中隔的软骨及骨给予一定牵引的力量,减少鼻中隔骨部特别是软骨部受周围骨质发育受到的挤压力,从而促使鼻中隔发育正常；根据实际情况对各个结构的尺寸进行确定,避免或者减少了儿童在成年后再进行鼻中隔手术矫正的可能,减轻在鼻腔生长发育过程中患儿因鼻中隔偏曲造成鼻窦炎、儿童OSAS的机会。(The invention belongs to the technical field of medical instruments, and discloses a children nasal septum deflection corrector which comprises a head fixing band, a lifting band and a nasal fixer, wherein the HRCT post-processing mimics3D imaging system is used for calculating the angle of nasal septum deflection and the required traction force and direction in the early stage, and the device comprises the head fixing band, the lifting band and the nasal fixer for correction in the later stage, and the upper end of the lifting band is fixedly connected with the middle of the head fixing band. The invention utilizes the plasticity of bone development to apply certain traction force to the cartilage and bone of the nasal septum, reduces the extrusion force of the nasal septum part, particularly the cartilage part, which is applied by the development of peripheral bone, thereby promoting the normal development of the nasal septum; the sizes of all the structures are determined according to actual conditions, so that the possibility that the nasal septum operation correction is carried out after the children grow up is avoided or reduced, and the chances of nasosinusitis and children OSAS caused by deflection of the nasal septum in the nasal cavity growth and development process are reduced.)

1. A children's nasal septum deflection orthosis, the children's nasal septum deflection orthosis comprising:

a head fixing strap, a lifting strap and a nose fixer;

the upper end of the lifting strap is fixedly connected with the middle of the head fixing strap, and the nose part fixer is bonded on the outer side of the lower end of the lifting strap;

the lifting belt is made of elastic rubber band materials;

the nose fixer adopts skin-friendly adhesive tapes to fix the elastic rubber band below the outer nose wing and the lifting belt.

2. The device as claimed in claim 1, wherein the two ends of the head fixing strap are fixed by sponge sandwich adhesive buttons.

3. A method of installing a children's nasal septum deflection corrector as claimed in any one of claims 1 to 2, wherein the method of installing a children's nasal septum deflection corrector comprises:

firstly, performing CT scanning on the head and the nasal septum of a child with nasal septum deflection through CT, and transmitting the scanning result to medical three-dimensional software;

secondly, performing nasal septum-nasal cartilage three-dimensional image reconstruction and automatic analysis on various parameters on the scanned CT image through medical three-dimensional software;

step three, after the image reconstruction and the analysis are completed, the image and the analysis result can be printed selectively;

step four, medical staff can formulate a correction scheme according to the printed image and the analysis result;

determining the specific length size and strength of each component in the nasal septum deflection corrector of the child according to the correction scheme, and regularly adjusting the traction strength and direction according to the nasal septum development condition during follow-up visit in the correction process;

and step six, firstly adhering the lower end of the lifting belt to the inner side of the nose part fixer, adhering the nose part fixer to the surface of the nose part, enabling the lifting belt to be located on the upper side of the nose tip, and fixing the head fixing belt through sponge sandwich sticky buckles at two ends.

4. The method for installing the children's nasal septum deflection corrector according to claim 3, wherein the reconstruction method of the nasal septum-nasal cartilage three-dimensional image reconstruction is as follows:

firstly, importing data of CT scanning of nasal septum of children with nasal septum deviation into Mimics 16.0 software;

step two, automatically selecting the hoses according to the default soft tissue window setting range of the system, and displaying the selected hoses by using a color shade;

and thirdly, performing three-dimensional reconstruction on the cartilage by using a 3D calculation command to generate a three-dimensional digital model of the nasal septum-nasal cartilage.

5. The method of installing a device for correcting nasal septum deviation of a child according to claim 3, wherein the device for correcting nasal septum deviation of a child is used for detecting and analyzing the state of nasal septum deviation of a child by using a device for detecting nasal septum deviation of a child before the device for correcting nasal septum deviation of a child is installed, and the device for detecting nasal septum deviation of a child specifically comprises:

the nasal septum scanning module is connected with the central control module, comprises a CT and is used for carrying out CT scanning on the head of the child with the deflected nasal septum;

the nasal septum three-dimensional reconstruction module is connected with the central control module, leads the data of the head CT scanning of the children with nasal septum deflection into the medical three-dimensional software and carries out three-dimensional reconstruction on the cartilage;

the nasal septum three-dimensional analysis module is connected with the central control module and analyzes the thickness, the total area, the movable nasal septum cartilage area, the dorsal side length and the caudal side length of the nasal septum-nasal cartilage by using medical three-dimensional software;

the printing module is connected with the central control module, comprises a color printer and prints the nasal septum-nasal side cartilage image and the analysis structure;

the central control module is connected with the nasal septum scanning module, the nasal septum three-dimensional reconstruction module, the nasal septum three-dimensional analysis module and the printing module, and is used for carrying out CT scanning on the head of a child with nasal septum deflection by controlling a CT machine, transmitting a CT scanning result to medical three-dimensional software to carry out three-dimensional reconstruction on the scanned nasal septum-lateral cartilage and automatically analyzing various parameters, carrying out color printing on an image after analysis is completed, and providing a basis for medical staff to formulate a nasal septum correction scheme.

6. The method of installing a children's nasal septum deflection corrector according to claim 5, wherein the children's nasal septum deflection detection system further comprises:

the support module is connected with each module and used for realizing the combination of each module;

the display module is connected with the central control module and is used for displaying the reconstructed three-dimensional image and the analysis result;

and the power supply module is connected with each module and used for providing power support for each module.

7. The method as claimed in claim 5, wherein the system further comprises a pre-processing module, the pre-processing module is configured to receive data signals of the CT image scanned by the nasal septum scanning module, filter the data signals, read the image content, enhance the contrast effect of image blocks, segment each image block, and refine the image blocks to generate a vector image.

8. The method of installing a children's nasal septum deflection corrector according to claim 7, wherein the preprocessing module specifically comprises:

the data receiving unit is used for receiving a data signal of a CT image output by the CT scanning equipment;

the image filtering unit is used for carrying out noise reduction and filtering on CT image information and improving the image definition;

the image sharpening unit is used for highlighting the edge of the distinguished body in the image through a Laplace module method, adjusting the contrast and the definition of the CT image by utilizing an effect enhancement program and enhancing the layering sense and the distinguishing effect of the CT image;

the block segmentation unit is used for distinguishing and expressing the gray level distribution in the CT image by a gray level histogram and segmenting the CT image from different gray level edges;

and the edge thinning and splicing unit is used for thinning the edges of the divided blocks, organically combining the divided blocks, further stereoscopically splicing the divided blocks into three-dimensional views, and storing the three-dimensional views in the vector map set unit in the png format so that the multi-angle three-dimensional views are stored in the vector map set unit.

9. The method for installing the children nasal septum deflection corrector according to claim 5, wherein when the nasal septum scanning module is used for performing CT scanning on the nasal septum of the children with nasal septum deflection, the CT scanning device needs to be scanned and positioned, and the scanning and positioning method is as follows:

acquiring a 3D image of the face of a patient to be scanned on a patient bed of the CT by using a 3D camera;

identifying the obtained 3D facial image by using an image identification technology to acquire the facial structure information of the patient to be scanned and the relation between the face and the nasal septum deflection;

determining a range to be scanned on the facial 3D image based on the facial structure information;

based on the data of each space position relative to a certain height of a sickbed and a certain horizontal offset position of the sickbed, which are obtained by a space coordinate system of a 3D camera and a space coordinate system of CT scanning and imaging equipment, calibrating the two coordinate systems to obtain a conversion relation between the two coordinate systems;

and converting the range to be scanned in the space coordinate system of the 3D camera into the space coordinate system of the CT scanning and imaging equipment according to the conversion relation.

10. The method of installing a children's nasal septum deflection corrector according to claim 9, wherein the calibration method used to calibrate the two coordinate systems comprises:

1) placing the calibrator on the examination couch;

2) setting the bed height of the examination bed;

3) detecting the calibration object on the examining table by using the detecting equipment to obtain the data of the detection image of the calibration object;

4) shooting a calibration object on an examination bed by using a 3D camera to obtain data of a shot image of the calibration object;

5) horizontally shifting the calibration object relative to the 3D camera and the detection equipment;

6) repeating steps 4) and 5) until data is obtained covering a sufficient number of horizontal ranges of the table for the captured images of the calibration object.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a children nasal septum deflection corrector.

Background

At present, nasal septum deflection is a common clinical disease and can cause structural rhinitis, nasal obstruction and epistaxis; however, clinically observed nasal septum deviation rarely occurs in children under 2 years of age, and occurs early to 5 years of age; the bone in the childhood is different from that in the adult, contains more water and organic matters and has plasticity; this was also why the operation of nasal septum deflection was not done until age 18. The existing treatment method is surgical correction after 18 years old, the risk of nasal septum deflection operation is self-evident, and nasal septum hematoma, nasal septum abscess, nasal septum perforation and even external nasal malformation are avoided; and discomfort such as negative pressure headache, nasal obstruction and the like caused by postoperative packing. If the nasal septum deflection can be treated by non-operation, the method is a great progress in the nasal septum deflection treatment process. Most of nasal septum deflection occurs in a square cartilage area of the nasal septum, and the nasal septum is pulled by external force by means of bone growth force before 18 years old to be as normal as possible, so that abnormal nasal septum structures such as spinous process, crest process, septal concha, C-shaped deflection and the like are not formed due to extrusion. At present, no method for treating nasal septum deflection by non-operation exists.

Through the above analysis, the problems and defects of the prior art are as follows:

the existing treatment method for nasal septum deflection is surgical correction after 18 years of age, has high surgical risk, is easy to cause discomfort such as negative pressure headache, nasal obstruction and the like due to postoperative filling, and has no non-surgical treatment method for nasal septum deflection at present.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a children nasal septum deflection corrector.

The invention is realized in such a way that the children nasal septum deflection corrector comprises:

a head fixing strap, a lifting strap and a nose fixer;

the upper end of the lifting strap is fixedly connected with the middle of the head fixing strap, and the nose part fixer is bonded on the outer side of the lower end of the lifting strap;

the lifting belt is made of elastic rubber band materials;

the nose fixer adopts skin-friendly adhesive tapes to fix the elastic rubber band below the outer nose wing and the lifting belt.

Furthermore, two ends of the head fixing band are fixed by sponge sandwich sticking buttons.

Another object of the present invention is to provide a method for installing a children's nasal septum deflection corrector, the method including:

firstly, performing CT scanning on the head and the nasal septum of a child with nasal septum deflection through CT, and transmitting the scanning result to medical three-dimensional software;

secondly, performing nasal septum-nasal cartilage three-dimensional image reconstruction and automatic analysis on various parameters on the scanned CT image through medical three-dimensional software;

step three, after the image reconstruction and the analysis are completed, the image and the analysis result can be printed selectively;

step four, medical staff can formulate a correction scheme according to the printed image and the analysis result;

determining the specific length size and strength of each component in the nasal septum deflection corrector of the child according to the correction scheme, and regularly adjusting the traction strength and direction according to the nasal septum development condition during follow-up visit in the correction process;

and step six, firstly adhering the lower end of the lifting belt to the inner side of the nose part fixer, adhering the nose part fixer to the surface of the nose part, enabling the lifting belt to be located on the upper side of the nose tip, and fixing the head fixing belt through sponge sandwich sticky buckles at two ends.

Further, the reconstruction method for reconstructing the nasal septum-nasal side cartilage three-dimensional image specifically comprises the following steps:

firstly, importing data of CT scanning of nasal septum of children with nasal septum deviation into Mimics 16.0 software;

step two, automatically selecting the hoses according to the default soft tissue window setting range of the system, and displaying the selected hoses by using a color shade;

and thirdly, performing three-dimensional reconstruction on the cartilage by using a 3D calculation command to generate a three-dimensional digital model of the nasal septum-nasal cartilage.

Further, children nasal septum deflection unscrambler adopts children nasal septum deflection detecting system to carry out detection analysis to children nasal septum deflection state earlier before the installation, children nasal septum deflection detecting system specifically includes:

the nasal septum scanning module is connected with the central control module, comprises a CT and is used for carrying out CT scanning on the head of the child with the deflected nasal septum;

the nasal septum three-dimensional reconstruction module is connected with the central control module, leads the data of the head CT scanning of the children with nasal septum deflection into the medical three-dimensional software and carries out three-dimensional reconstruction on the cartilage;

the nasal septum three-dimensional analysis module is connected with the central control module and analyzes the thickness, the total area, the movable nasal septum cartilage area, the dorsal side length and the caudal side length of the nasal septum-nasal cartilage by using medical three-dimensional software;

the printing module is connected with the central control module, comprises a color printer and prints the nasal septum-nasal side cartilage image and the analysis structure;

the central control module is connected with the nasal septum scanning module, the nasal septum three-dimensional reconstruction module, the nasal septum three-dimensional analysis module and the printing module, is used for carrying out CT scanning on the nasal septum of children with nasal septum deflection by controlling a CT machine, transmits a CT scanning result to medical three-dimensional software to carry out three-dimensional reconstruction on the scanned nasal septum-lateral cartilage and automatically analyze various parameters, carries out color printing on an image which is analyzed and completed, and provides a basis for medical staff to formulate a nasal septum correction scheme.

Further, the detection system for detecting deflection of nasal septum of children further comprises:

the support module is connected with each module and used for realizing the combination of each module;

the display module is connected with the central control module and is used for displaying the reconstructed three-dimensional image and the analysis result;

and the power supply module is connected with each module and used for providing power support for each module.

Furthermore, the children nasal septum deflection detection system also comprises a preprocessing module, wherein the preprocessing module is used for receiving data signals of CT images scanned by the nasal septum scanning module, filtering the signals, reading image contents, enhancing the image block contrast effect, segmenting each block of the images, refining and processing the image blocks to generate vector diagrams.

Further, the preprocessing module specifically includes:

the data receiving unit is used for receiving a data signal of a CT image output by the CT scanning equipment;

the image filtering unit is used for carrying out noise reduction and filtering on CT image information and improving the image definition;

the image sharpening unit is used for highlighting the edge of the distinguished body in the image through a Laplace module method, adjusting the contrast and the definition of the CT image by utilizing an effect enhancement program and enhancing the layering sense and the distinguishing effect of the CT image;

the block segmentation unit is used for distinguishing and expressing the gray level distribution in the CT image by a gray level histogram and segmenting the CT image from different gray level edges;

and the edge thinning and splicing unit is used for thinning the edges of the divided blocks, organically combining the divided blocks, further stereoscopically splicing the divided blocks into three-dimensional views, and storing the three-dimensional views in the vector map set unit in the png format so that the multi-angle three-dimensional views are stored in the vector map set unit.

Furthermore, when CT scanning is performed on the nasal septum of a child with nasal septum deflection in the nasal septum scanning module, CT scanning equipment needs to be scanned and positioned, and the adopted scanning and positioning method is as follows:

acquiring a 3D image of the face of a patient to be scanned on a patient bed of the CT by using a 3D camera;

identifying the obtained 3D facial image by using an image identification technology to acquire the facial structure information of the patient to be scanned and the relation between the face and the nasal septum deflection;

determining a range to be scanned on the facial 3D image based on the facial structure information;

based on the data of each space position relative to a certain height of a sickbed and a certain horizontal offset position of the sickbed, which are obtained by a space coordinate system of a 3D camera and a space coordinate system of CT scanning and imaging equipment, calibrating the two coordinate systems to obtain a conversion relation between the two coordinate systems;

and converting the range to be scanned in the space coordinate system of the 3D camera into the space coordinate system of the CT scanning and imaging equipment according to the conversion relation.

Further, the calibration method adopted when calibrating the two coordinate systems comprises the following steps:

1) placing the calibrator on the examination couch;

2) setting the bed height of the examination bed;

3) detecting the calibration object on the examining table by using the detecting equipment to obtain the data of the detection image of the calibration object;

4) shooting a calibration object on an examination bed by using a 3D camera to obtain data of a shot image of the calibration object;

5) horizontally shifting the calibration object relative to the 3D camera and the detection equipment;

6) repeating steps 4) and 5) until data is obtained covering a sufficient number of horizontal ranges of the table for the captured images of the calibration object.

By combining all the technical schemes, the invention has the advantages and positive effects that:

the children nasal septum deflection corrector provided by the invention comprises a device which utilizes an HRCT post-processing mimics3D imaging system to calculate the angle of nasal septum deflection and the force and direction required to be pulled in the early stage, and corrects the angle and the force and the direction required to be pulled through a device comprising a head fixing band, a lifting band and a nasal fixator in the later stage, and utilizes the bone development plasticity to apply certain traction force to cartilage and bones of the nasal septum, so that the extrusion force on the nasal septum part, particularly the cartilage part, which is subjected to the development of peripheral bone is reduced, and the nasal septum is promoted to develop normally. The nasal septum scanning module is adopted to carry out CT scanning on the nasal septum of the children with the nasal septum deviation, the three-dimensional nasal septum reconstruction module guides the head CT scanning data of the children with the nasal septum deviation into medical three-dimensional software and carries out three-dimensional reconstruction on cartilage, the three-dimensional nasal septum analysis module uses the medical three-dimensional software to carry out thickness, total area, movable nasal septum cartilage area, back side length and tail side length analysis on nasal septum-nasal side cartilage, the size and strength of each structure of the children nasal septum deviation corrector can be determined according to actual conditions, and the nasal septum CT is rechecked every half year to confirm the traction effect and adjust the traction strength so that the nasal septum has no obvious pathological deviation after the back face of an adult is developmentally shaped. The nasal bone fracture postoperative fixing device can be used for adult nasal bone fracture postoperative fixing, adult nasal septum deflection postoperative fixing and adult nasal septum deflection induced OSAS non-operative treatment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural view of a children nasal septum deflection corrector provided by an embodiment of the invention.

Fig. 2 is a schematic view of a sponge sandwich hook-and-loop fastener structure provided by an embodiment of the invention.

In the figure: 1. a head fixing band; 2. lifting the pull belt; 3. a nasal anchor; 4. the sponge sandwich sticky buckle.

Fig. 3 is a flow chart of a method for installing the children nasal septum deflection corrector provided by the embodiment of the invention.

Fig. 4 is a flowchart of a reconstruction method for reconstructing a three-dimensional image of nasal septum-nasal cartilage according to an embodiment of the present invention.

Fig. 5 is a block diagram of a detecting system for detecting deviation of nasal septum of a child according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides a children nasal septum deflection corrector, and the invention is described in detail with reference to the attached drawings.

As shown in fig. 1 and 2, the nasal septum deflection corrector for children provided by the embodiment of the invention comprises: the nose fixing device comprises a head fixing band 1, a lifting belt 2, a nose fixer 3 and a sponge sandwich sticky buckle 4.

The upper end of the lifting strap 2 is fixedly connected with the middle of the head fixing strap 1, and the nose part fixer 3 is bonded at the outer side of the lower end of the lifting strap 2; the lifting belt 2 is made of elastic rubber band materials; the nose fixer 3 adopts skin-friendly adhesive tape to fix the elastic rubber band.

Two ends of the head fixing band 1 in the embodiment of the invention are fixed by sponge sandwich sticky buckles 4.

As shown in fig. 3, the installation method of the children nasal septum deflection corrector provided by the embodiment of the present invention specifically includes:

s101, performing CT scanning on the head and the nasal septum of the child with the nasal septum deflected through CT, and transmitting the scanning result to medical three-dimensional software.

S102, performing nasal septum-nasal cartilage three-dimensional image reconstruction on the scanned CT image through medical three-dimensional software and automatically analyzing various parameters.

S103, after the image reconstruction and the analysis are completed, the image and the analysis result can be printed optionally.

And S104, medical staff can make a correction scheme according to the printed image and the analysis result.

And S105, determining the specific length size and strength of each component in the nasal septum deflection corrector for the child according to the correction scheme, and regularly adjusting the traction strength and direction according to the nasal septum development condition in follow-up visits in the correction process.

S106, firstly, adhering the lower end of the lifting belt to the inner side of the nose fixer, adhering the nose fixer to the surface of the nose, enabling the lifting belt to be located on the upper side of the nose tip, and fixing the head fixing belt through sponge sandwich adhesive buttons at two ends.

As shown in fig. 4, the reconstruction method for reconstructing a three-dimensional image of nasal septum-nasal cartilage according to the embodiment of the present invention includes the following specific steps:

s201, importing data of head CT scanning of the children with nasal septum deviation into Mimics 16.0 software.

S202, automatically selecting hoses according to the default soft tissue window setting range of the system, and displaying the selected hoses by using a color mask.

And S203, performing three-dimensional reconstruction on the cartilage by using a 3D calculation command to generate a three-dimensional digital model of the nasal septum-nasal cartilage.

As shown in fig. 5, before the child nasal septum deflection corrector provided by the embodiment of the present invention is installed, a child nasal septum deflection detection system is first used to perform detection analysis on a state of the child nasal septum deflection, and the child nasal septum deflection detection system specifically includes:

the nasal septum scanning module is connected with the central control module, comprises a CT and is used for performing CT scanning on the head and the nasal septum of the children with deviated nasal septum;

the nasal septum three-dimensional reconstruction module is connected with the central control module, leads the data of the head CT scanning of the children with nasal septum deflection into the medical three-dimensional software and carries out three-dimensional reconstruction on the cartilage;

the nasal septum three-dimensional analysis module is connected with the central control module and analyzes the thickness, the total area, the area of the transplantable nasal septum cartilage, the dorsal side length and the caudal side length of the nasal septum-nasal side cartilage by using medical three-dimensional software;

the printing module is connected with the central control module, comprises a color printer and prints the nasal septum-nasal side cartilage image and the analysis structure;

the central control module is connected with the nasal septum scanning module, the nasal septum three-dimensional reconstruction module, the nasal septum three-dimensional analysis module and the printing module, is used for carrying out CT scanning on the nasal septum of children with nasal septum deflection by controlling a CT machine, transmits a CT scanning result to medical three-dimensional software to carry out three-dimensional reconstruction on the scanned nasal septum-lateral cartilage and automatically analyze various parameters, carries out color printing on an image which is analyzed and completed, and provides a basis for medical staff to formulate a nasal septum correction scheme.

The detection system for the deflection of the nasal septum of the child provided by the embodiment of the invention further comprises:

the support module is connected with each module and used for realizing the combination of each module;

the display module is connected with the central control module and is used for displaying the reconstructed three-dimensional image and the analysis result;

and the power supply module is connected with each module and used for providing power support for each module.

The children nasal septum deflection detection system provided by the embodiment of the invention also comprises a preprocessing module, wherein the preprocessing module is used for receiving data signals of the CT images scanned by the nasal septum scanning module, filtering the data signals, reading the image content, enhancing the image block contrast effect, segmenting each block of the image, finely processing the image block, and generating a vector diagram.

The preprocessing module provided by the embodiment of the invention specifically comprises:

the data receiving unit is used for receiving a data signal of a CT image output by the CT scanning equipment;

the image filtering unit is used for carrying out noise reduction and filtering on CT image information and improving the image definition;

the image sharpening unit is used for highlighting the edge of the distinguished body in the image through a Laplace module method, adjusting the contrast and the definition of the CT image by utilizing an effect enhancement program and enhancing the layering sense and the distinguishing effect of the CT image;

the block segmentation unit is used for distinguishing and expressing the gray level distribution in the CT image by a gray level histogram and segmenting the CT image from different gray level edges;

and the edge thinning and splicing unit is used for thinning the edges of the divided blocks, organically combining the divided blocks, further stereoscopically splicing the divided blocks into three-dimensional views, and storing the three-dimensional views in the vector map set unit in the png format so that the multi-angle three-dimensional views are stored in the vector map set unit.

When the nasal septum scanning module provided by the embodiment of the invention is used for carrying out CT scanning on the nasal septum of a child with deviated nasal septum, CT scanning equipment needs to be scanned and positioned, and the adopted scanning and positioning method comprises the following steps:

acquiring a 3D image of the face of a patient to be scanned on a patient bed of the CT by using a 3D camera;

identifying the obtained 3D facial image by using an image identification technology to acquire the facial structure information of the patient to be scanned and the relation between the face and the nasal septum deflection;

determining a range to be scanned on the facial 3D image based on the facial structure information;

based on the data of each space position relative to a certain height of a sickbed and a certain horizontal offset position of the sickbed, which are obtained by a space coordinate system of a 3D camera and a space coordinate system of CT scanning and imaging equipment, calibrating the two coordinate systems to obtain a conversion relation between the two coordinate systems;

and converting the range to be scanned in the space coordinate system of the 3D camera into the space coordinate system of the CT scanning and imaging equipment according to the conversion relation.

The calibration method adopted in the embodiment of the invention for calibrating the two coordinate systems comprises the following steps:

1) placing the calibrator on the examination couch;

2) setting the bed height of the examination bed;

3) detecting the calibration object on the examining table by using the detecting equipment to obtain the data of the detection image of the calibration object;

4) shooting a calibration object on an examination bed by using a 3D camera to obtain data of a shot image of the calibration object;

5) horizontally shifting the calibration object relative to the 3D camera and the detection equipment;

6) repeating steps 4) and 5) until data is obtained covering a sufficient number of horizontal ranges of the table for the captured images of the calibration object.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.