CN108852291B - A handheld oral three-dimensional scanning device and scanning method - Google Patents
A handheld oral three-dimensional scanning device and scanning method Download PDFInfo
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- CN108852291B CN108852291B CN201810446472.8A CN201810446472A CN108852291B CN 108852291 B CN108852291 B CN 108852291B CN 201810446472 A CN201810446472 A CN 201810446472A CN 108852291 B CN108852291 B CN 108852291B
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- 238000000034 method Methods 0.000 title claims description 17
- 238000001514 detection method Methods 0.000 claims abstract description 80
- 210000000214 mouth Anatomy 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 12
- 230000010365 information processing Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 6
- 210000000056 organ Anatomy 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000005192 partition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 208000025157 Oral disease Diseases 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000030194 mouth disease Diseases 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0073—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by tomography, i.e. reconstruction of 3D images from 2D projections
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
本发明涉及一种手持式口腔三维扫描装置，包括握持手柄、连接轴、咬合垫、工作台、检测柱、摄像组、激光测距装置、驱动电源及控制电路，驱动电源及控制电路均嵌于握持手柄中，握持手柄前端面与连接轴末端铰接，连接轴前端与工作台后端面连接，检测柱后端面与工作台前端面连接，一个摄像组与两个激光测距装置构成一个检测组，检测组至少三个，其中一个检测组嵌于检测柱前端面，剩余各检测组嵌于检测柱侧壁前端位置处。本发明结构简单，使用灵活方便，通用性好，一方面可高效便捷的对患者口腔进行全面高效三维扫描建模作业，另一方面在进行三维扫描过程中，可主动对检测数据进行检测修正，极大的提高了口腔三维建模作业的工作效率和建模精度。
The invention relates to a hand-held oral three-dimensional scanning device, comprising a holding handle, a connecting shaft, an occlusal pad, a worktable, a detection column, a camera group, a laser ranging device, a driving power supply and a control circuit. The driving power supply and the control circuit are embedded in the In the holding handle, the front end of the handle is hinged with the end of the connecting shaft, the front end of the connecting shaft is connected with the back end of the worktable, the back end of the detection column is connected with the front end of the worktable, and a camera group and two laser ranging devices form a There are at least three detection groups, one of which is embedded in the front end surface of the detection column, and the remaining detection groups are embedded in the front end position of the side wall of the detection column. The invention is simple in structure, flexible and convenient to use, and has good versatility. On the one hand, it can efficiently and conveniently perform comprehensive and efficient three-dimensional scanning and modeling operations on the oral cavity of a patient; It greatly improves the work efficiency and modeling accuracy of oral 3D modeling operations.
Description
Technical Field
The invention relates to a handheld oral three-dimensional scanning device and a scanning method, and belongs to the technical field of medical treatment.
Background
At present, in the process of oral disease diagnosis and treatment and oral cavity reshaping, accurate three-dimensional modeling operation needs to be carried out on the oral cavity of a patient, along with the progress and popularization of a 3D scanning technology, the traditional plaster modeling operation is gradually replaced by the oral modeling operation realized by the 3D scanning mode, however, in practical use, it is found that the currently used oral 3D scanning modeling device is often complex in structure, large in size, and relatively high in operation and use cost, and in the process of performing oral 3D scanning modeling, lack of timely and effective correction on scanned oral three-dimensional data, so that the working efficiency is relatively low when the 3D scanning modeling operation is carried out at present, the modeling precision is relatively insufficient, therefore, in view of the current situation, there is an urgent need to develop a new 3D scanning apparatus for three-dimensional modeling of the oral cavity and a scanning method corresponding to the same.
Disclosure of Invention
In order to overcome some defects in the prior art, the invention provides a handheld oral three-dimensional scanning device and a scanning method.
In order to achieve the above mentioned effect, a handheld oral three-dimensional scanning device and a scanning method are provided, which comprises the following steps:
a hand-held oral three-dimensional scanning device comprises a holding handle, a connecting shaft, an occlusion pad, a workbench, a detection column, a camera group, a laser distance measuring device, a driving power supply and a control circuit, wherein the holding handle is of a closed cavity structure, the driving power supply and the control circuit are embedded in the holding handle, the control circuit is respectively and electrically connected with the detection column, the camera group, the laser distance measuring device and the driving power supply, an access cover is arranged on the rear end face of the holding handle, the front end face of the holding handle is hinged with the tail end of the connecting shaft through a turntable mechanism, the axes of the holding handle and the connecting shaft form an included angle of 0-90 degrees, the front end of the connecting shaft is connected with the rear end face of the workbench and coaxially distributed, the diameter of the workbench is 1.5-5 times of the diameter of the connecting shaft, the rear end face of the detection column is connected with the front end face of the workbench and coaxially distributed, the camera, in the camera group and the laser ranging device in the same detection group, two laser ranging devices are symmetrically distributed by the axis of the camera group, the camera group and the laser ranging devices are distributed in the same straight line direction, at least three detection groups are provided, one detection group is embedded in the front end surface of the detection column and is coaxially distributed with the detection column, the rest detection groups are embedded in the front end position of the side wall of the detection column and are uniformly distributed around the axis of the detection column, the axis of each detection group positioned on the side wall of the detection column is vertical to and intersected with the axis of the detection column, the detection column comprises a base, a driving motor, a bearing rod and a guide slide rail, the base is of a closed cavity body connecting structure, the rear end surface of the base is connected with the front end surface of the workbench, the driving motor is embedded in the base and is coaxially distributed with the rear end surface of the bearing rod and the bearing rod, at least one guide slide rail is coated on, the detection group is connected with the bearing rod through the guide sliding rail, and the occlusion pad is coated outside the connecting shaft and is coaxially distributed with the connecting shaft.
Furthermore, a partition board is arranged in the holding handle, and the driving power supply and the control circuit are mutually isolated through the partition board.
Furthermore, the camera group comprises a CCD camera and an infrared camera, and the CCD camera and the infrared camera are connected in parallel.
Furthermore, the control circuit comprises an information processing main control circuit based on a single chip microcomputer, and a charge-discharge control sub-circuit, a rectifier sub-circuit and a communication sub-circuit which are connected with the information processing main control circuit.
Furthermore, the main control circuit comprises a comprehensive data processing module, an image information processing module, a data communication bus module, a data cache module and a driving module, wherein the data processing module and the image information processing module are mutually connected through the data cache module and are mutually connected with the data communication bus module through the data cache module respectively, the driving module is mutually and electrically connected with the data cache module, and the driving module is electrically connected with the detection column, the camera group, the laser ranging device, the driving power supply, the charge-discharge control sub-circuit, the rectifier sub-circuit and the communication sub-circuit respectively.
A scanning method of a handheld oral three-dimensional scanning device comprises the following steps:
firstly, assembling equipment, namely assembling a holding handle, a connecting shaft, an occlusion pad, a workbench, a detection column, a camera group, a laser ranging device, a driving power supply and a control circuit, and then connecting the control circuit with an external data output device;
secondly, oral cavity scanning, the medical staff holds the handle, the well detection column is embedded into the oral cavity of the patient, the patient can adjust and position the equipment by clenching the occluding cushion, and after the identification and positioning are finished, the control circuit drives the camera group and the laser ranging device in each detection group to operate, on one hand, the camera group collects image information which cannot be in the oral cavity of the patient, on the other hand, the laser ranging device carries out 360-degree ranging detection on the oral cavity of the patient around the axis of the detection column to obtain the novel specific size parameters of each organ tissue in the oral cavity, and finally, the control circuit outputs the generated oral cavity three-dimensional data information through an external data output device connected in the first step.
Further, the external data output device in the first step is shared by any one or more of a computer, a mobile communication terminal and a 3D printer.
Furthermore, in the second step, when the oral cavity scanning operation is performed through the camera group and the laser ranging device, the bearing rod is driven to rotate at a uniform speed in a single direction through the driving motor of the detection column, then 360-degree scanning operation is performed on the oral cavity independently through all detection groups on the bearing rod, parameter information between all detection groups is collected and corrected through the control circuit, and then the parameter information and the image information are collected.
The invention has simple structure, flexible and convenient use and good universality, can efficiently and conveniently carry out comprehensive and efficient three-dimensional scanning modeling operation on the oral cavity of a patient on the one hand, and can actively detect and correct detection data in the three-dimensional scanning process on the other hand, thereby greatly improving the working efficiency and modeling precision of the oral cavity three-dimensional modeling operation.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the method of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The hand-held oral three-dimensional scanning device as shown in fig. 1 comprises a holding handle 1, a connecting shaft 2, an occlusion pad 3, a workbench 4, a detection column 5, a camera group 6, a laser distance measuring device 7, a driving power supply 8 and a control circuit 9, wherein the holding handle 1 is of a closed cavity structure, the driving power supply 8 and the control circuit 9 are embedded in the holding handle 1, the control circuit 9 is respectively and electrically connected with the detection column 5, the camera group 6, the laser distance measuring device 7 and the driving power supply 8, the rear end surface of the holding handle 1 is provided with an access cover 10, the front end surface is hinged with the tail end of the connecting shaft 2 through a turntable mechanism 11, the axes of the holding handle 1 and the connecting shaft 2 form an included angle of 0-90 degrees, the front end of the connecting shaft 2 is connected with and coaxially distributed with the rear end surface of the workbench 4, the diameter of the workbench 4 is 1.5-5 times of the diameter of the connecting shaft 2, the rear, the camera group 6 and the laser ranging devices 7 are multiple, one camera group 6 and the two laser ranging devices 7 form a detection group, in the camera group 6 and the laser ranging devices 7 in the same detection group, the two laser ranging devices 7 are symmetrically distributed along the axis of the camera group 6, the camera group 6 and the laser ranging devices 7 are distributed in the same straight line direction, the detection groups are at least three, one detection group is embedded in the front end face of the detection column 5 and is coaxially distributed with the detection column 5, the rest detection groups are embedded in the front end position of the side wall of the detection column 5 and are uniformly distributed around the axis of the detection column 5, and the axes of the detection groups positioned on the side wall of the detection column 5 are vertical to and intersected with the axis of the detection column 5.
In this embodiment, the detection column 5 includes a base 51, a driving motor 52, a bearing rod 53, and a guiding slide rail 54, where the base 51 is a sealed cavity structure, the rear end surface of the base is connected to the front end surface of the workbench 4, the driving motor 52 is embedded in the base 51, and is coaxially distributed with the bearing rod 53 and the rear end surface of the bearing rod 53, at least one guiding slide rail 54 is wrapped on the outer surface of the bearing rod 53 and is an annular structure coaxially distributed with the bearing rod 53, the detection group is connected to the bearing rod 53 through the guiding slide rail 54, and the engagement pad 53 is wrapped outside the connecting shaft 2 and coaxially distributed with the connecting shaft 2.
In this embodiment, a partition plate 12 is disposed in the grip handle 1, and the driving power supply 8 and the control circuit 9 are isolated from each other by the partition plate 12.
In this embodiment, the camera group 6 includes a CCD camera and an infrared camera, and the CCD camera and the infrared camera are connected in parallel.
In this embodiment, the control circuit 9 includes an information processing main control circuit based on a single chip, and a charge-discharge control sub-circuit, a rectifier sub-circuit and a communication sub-circuit connected to the information processing main control circuit.
In this embodiment, the main control circuit includes an integrated data processing module, an image information processing module, a data communication bus module, a data cache module, and a driving module, wherein the data processing module and the image information processing module are connected to each other through the data cache module and are respectively connected to the data communication bus module through the data cache module, the driving module is electrically connected to each other in the field of the data cache module, and the driving module is respectively electrically connected to the detection column 5, the camera group 6, the laser ranging device 7, the driving power supply 8, the charge and discharge control sub-circuit, the rectifier sub-circuit, and the communication sub-circuit.
As shown in fig. 2, a scanning method of a handheld oral three-dimensional scanning device includes the following steps:
firstly, assembling equipment, namely assembling a holding handle, a connecting shaft, an occlusion pad, a workbench, a detection column, a camera group, a laser ranging device, a driving power supply and a control circuit, and then connecting the control circuit with an external data output device;
secondly, oral cavity scanning, the medical staff holds the handle, the well detection column is embedded into the oral cavity of the patient, the patient can adjust and position the equipment by clenching the occluding cushion, and after the identification and positioning are finished, the control circuit drives the camera group and the laser ranging device in each detection group to operate, on one hand, the camera group collects image information in the oral cavity of the patient, on the other hand, the laser ranging device carries out 360-degree ranging detection on the oral cavity of the patient around the axis of the detection column to obtain the novel specific size parameters of each organ tissue in the oral cavity, and finally, the control circuit outputs the generated oral cavity three-dimensional data information through an external data output device connected in the first step.
In this embodiment, the external data output device in the first step is one or more of a computer, a mobile communication terminal, and a 3D printer.
In this embodiment, in the second step, when the oral cavity scanning operation is performed by the imaging group and the laser ranging device, the bearing rod is driven to rotate at a uniform speed in a single direction by the driving motor of the detection column, and then it is ensured that each detection group on the bearing rod performs 360 ° scanning operation on the oral cavity independently, and parameter information between the detection groups is summarized and corrected by the control circuit, and then is summarized with the image information.
The invention has simple structure, flexible and convenient use and good universality, can efficiently and conveniently carry out comprehensive and efficient three-dimensional scanning modeling operation on the oral cavity of a patient on the one hand, and can actively detect and correct detection data in the three-dimensional scanning process on the other hand, thereby greatly improving the working efficiency and modeling precision of the oral cavity three-dimensional modeling operation.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
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| CN201810446472.8A CN108852291B (en) | 2018-05-11 | 2018-05-11 | A handheld oral three-dimensional scanning device and scanning method |
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| CN201810446472.8A CN108852291B (en) | 2018-05-11 | 2018-05-11 | A handheld oral three-dimensional scanning device and scanning method |
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| CN108852291B true CN108852291B (en) | 2021-03-23 |
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| CN109730646A (en) * | 2019-02-01 | 2019-05-10 | 温州大学 | An intraoral three-dimensional scanning imaging method |
| CN111568376A (en) * | 2020-05-11 | 2020-08-25 | 四川大学 | A direct three-dimensional scanning method and system for the physiological motion boundary of oral soft tissue |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512036A (en) * | 1994-03-15 | 1996-04-30 | Welch Allyn, Inc. | Dental imaging system |
| AU2001281761A1 (en) * | 2000-08-25 | 2002-03-04 | 3Shape Aps | Method and apparatus for three-dimensional optical scanning of interior surfaces |
| ES2669210T3 (en) * | 2011-11-15 | 2018-05-24 | Trispera Dental Inc. | Method and system to acquire data from an individual to prepare a 3D model |
| US20130330684A1 (en) * | 2012-06-06 | 2013-12-12 | Ormco Corporation | Multifunction wand for an intra-oral imaging system |
| KR101457108B1 (en) * | 2012-09-25 | 2014-10-31 | 데오덴탈 주식회사 | Scanner for oral cavity |
| DE102013005616A1 (en) * | 2013-04-04 | 2014-10-23 | DüRR DENTAL AG | Dental camera system |
| KR101533756B1 (en) * | 2014-01-24 | 2015-07-03 | 주식회사 오라픽스 | Oral cavity fixed type three dimensions oral cavity scanner |
| KR101832753B1 (en) * | 2015-05-08 | 2018-02-27 | (주)바텍이우홀딩스 | Apparatus for scanning for both model and oral cavity |
| CN206080474U (en) * | 2016-06-29 | 2017-04-12 | 郑洪� | Oral cavity inspection device, handheld part and endoscope |
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