CN117598718B - Camera movement detection device for CBCT and control method thereof - Google Patents
Camera movement detection device for CBCT and control method thereof Download PDFInfo
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- CN117598718B CN117598718B CN202410064741.XA CN202410064741A CN117598718B CN 117598718 B CN117598718 B CN 117598718B CN 202410064741 A CN202410064741 A CN 202410064741A CN 117598718 B CN117598718 B CN 117598718B
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- 238000000034 method Methods 0.000 title claims abstract description 69
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 238000007408 cone-beam computed tomography Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 41
- 230000008859 change Effects 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000013022 venting Methods 0.000 claims 2
- 230000006378 damage Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 230000004886 head movement Effects 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 120
- 238000002591 computed tomography Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 206010019194 Head discomfort Diseases 0.000 description 2
- 241000935974 Paralichthys dentatus Species 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0421—Supports, e.g. tables or beds, for the body or parts of the body with immobilising means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/30—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from X-rays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
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Abstract
The invention relates to the technical field of camera detection, in particular to a camera movement detection device for CBCT and a control method thereof, wherein the camera movement detection device comprises a frame and further comprises: the mounting seat is fixedly connected with the frame through a supporting plate; the positioning bracket is arranged at the top of the mounting seat; the jaw support is arranged at the top of the mounting seat and used for supporting the head of a patient; the camera is installed at the top of mount pad for shoot and record the removal data to patient's head gesture, the camera can be with the image that patient's head rocked in the detection process save the appointed file folder of rocking the frame, and the medical personnel of being convenient for look over, through the real-time removal detection to patient's head movement quantity, can remind the patient not to remove when slightly rocking on the one hand, thereby be favorable to reducing the condition emergence that rocks the range grow, on the other hand can in time terminate the exposure when patient's head rocks great, in order to reduce the injury that X ray caused the patient.
Description
Technical Field
The invention relates to the technical field of camera detection, in particular to a camera movement detection device for CBCT and a control method thereof.
Background
CBCT is an abbreviation for Cone beam CT, i.e. Cone beam CT. The principle of cone beam projection computer recombination tomograph is that the X-ray generator makes a ring DR around the projection object with a lower radiation dose. And then recombining the data obtained in the 'intersection' after multiple digital shots around the shot body in a computer to obtain a three-dimensional image. The projection principle of the CBCT acquired data is completely different from that of the traditional sector scanning CT, and the algorithm principle of the later computer recombination is similar.
The prior art discloses an invention patent of partial camera movement detection, and Chinese invention patent with the application number of CN201110336063.0 discloses a camera movement detection method and device, wherein the method comprises the steps of sending a movement operation instruction to a remote camera to acquire two continuous frames of images in a video stream of the camera; marking texture blocks in the image; calculating angle histograms of moving directions of all texture blocks; judging the movement of the camera through the angle histogram, and if the camera is in a movement state, acquiring the movement direction and the movement amount of the camera according to the histogram; otherwise, outputting fault alarm information.
CT scanning can cause the injury to the human body, in the in-process of carrying out CBCT scanning, need the patient to place the head on the jaw holds in the palm, because the jaw holds in the palm most texture among the prior art is harder, therefore patient's head is placed on the jaw holds in the palm, easily make patient's head uncomfortable, have certain defect, secondly, head uncomfortable still can cause the patient to produce a psychological that wants to rock the head, hope to adjust a comfortable position through rocking the head, and patient's head is when rocking, if the amplitude of rocking is great, then can lead to appearing the artifact in the result of CT scanning so that the image is unclear, thereby watch for the doctor and cause the influence, influence the accuracy of inspection.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, a patient is required to place the head on a jaw support in the CBCT scanning process, and the head of the patient is uncomfortable when the patient is placed on the jaw support because most of the jaw support is hard in texture, and the head of the patient is also uncomfortable, and has a certain defect.
In a first aspect, the present invention provides a camera movement detection device for CBCT, including a frame, further including:
the mounting seat is fixedly connected with the frame through a supporting plate;
the positioning bracket is arranged at the top of the mounting seat;
the jaw support is arranged at the top of the mounting seat and used for supporting the head of a patient;
the camera is arranged at the top of the mounting seat and is used for shooting the head gesture of a patient and recording moving data;
and the control unit is used for judging the movement amount according to the change of the movement data after the camera detects the movement of the head of the patient in the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount.
In a further implementation, the method further includes:
the two electric telescopic rods are fixed on the side wall of the positioning bracket, and the telescopic ends of the two electric telescopic rods are jointly fixed with a first circular ring;
the fixing component is arranged on the inner side of the first circular ring and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera detects that the head of the patient moves slightly in the exposure process.
In a further implementation, the securing assembly includes:
the second circular ring is rotationally connected to the inner side of the first circular ring and is in sealing connection with the first circular ring;
an air bag fixed on the inner side of the second circular ring;
a pressure sensor fixed on the outer wall of the air bag;
an air intake assembly mounted on a side wall of the positioning bracket, the air intake assembly being for ventilating an interior of the airbag;
the limiting assembly is used for limiting the relative movement of the first circular ring and the second circular ring;
the control unit is also used for controlling the limiting assembly to limit the first circular ring and the second circular ring when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring and the second circular ring when the position of the head of the patient is adjusted.
In a further implementation, the spacing assembly includes:
the micro cylinder is fixed in the second circular ring;
and the extrusion plate is fixed at the telescopic end part of the micro cylinder.
In a further implementation, the air intake assembly includes:
the two cylinders are rotationally connected to the side wall of the positioning bracket, and round rods are slidably inserted at the tops of the two cylinders;
the peripheries of the two round rods are fixedly connected with connecting plates, and the connecting plates are fixedly connected with the telescopic ends of the corresponding electric telescopic rods;
the solenoid valves are installed in the two round rods, and the tops of the round rods are fixedly communicated with the inner part of the first circular ring through connecting pipes.
In a further implementation, the adjustment assembly includes:
the two micro motors are fixedly arranged at the bottoms of the connecting plates, rotating rods are fixed on output shafts of the two micro motors, and the two rotating rods penetrate through the corresponding connecting plates;
the top ends of the two rotating rods are respectively fixed with a gear, the bottom of the second circular ring is provided with an annular groove, the inner wall of the annular groove is fixedly provided with an annular rack, and the two gears are meshed with the annular racks.
In a further implementation process, a spring is fixed inside the cylinder, and the top of the spring is fixedly connected with the bottom of the round rod.
In a second aspect, a control method of a camera movement detection device for CBCT is provided, including a frame, further including:
the mounting seat is fixedly connected with the frame through a supporting plate;
the positioning bracket is arranged at the top of the mounting seat;
the jaw support is arranged at the top of the mounting seat and used for supporting the head of a patient;
the camera is arranged at the top of the mounting seat and is used for shooting the head gesture of a patient and recording moving data;
the control unit is used for judging the movement amount according to the change of the movement data after the camera detects the movement of the head of the patient in the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount;
the two electric telescopic rods are fixed on the side wall of the positioning bracket, and the telescopic ends of the two electric telescopic rods are jointly fixed with a first circular ring;
the fixing component is arranged on the inner side of the first circular ring and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera detects that the head of the patient moves slightly in the exposure process;
the second circular ring is rotationally connected to the inner side of the first circular ring and is in sealing connection with the first circular ring;
an air bag fixed on the inner side of the second circular ring;
a pressure sensor fixed on the outer wall of the air bag;
an air intake assembly mounted on a side wall of the positioning bracket, the air intake assembly being for ventilating an interior of the airbag;
the limiting assembly is used for limiting the relative movement of the first circular ring and the second circular ring;
the control unit is also used for controlling the limiting assembly to limit the first circular ring and the second circular ring when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring and the second circular ring when the position of the head of the patient is adjusted;
the control method comprises the following steps:
controlling the camera to start detection according to the exposure start information control unit;
the exposure process is controlled to be terminated or continued by a movement amount control unit detected by the camera;
the control unit controls the camera to stop detecting according to the exposure ending information.
In a further implementation process, the specific fixing method of the fixing assembly includes:
the control unit controls the electric telescopic rod to stop moving according to the pressure information of the pressure sensor;
the pressure information control unit according to the pressure sensor controls the air inlet assembly to start to perform first air inlet to the air bag.
In a further implementation, the specific adjusting method of the adjusting component comprises the following steps:
controlling the air inlet assembly to carry out secondary air inlet to the air bag according to the movement amount detected by the camera;
the adjusting component is controlled by the moving amount control unit according to the detection of the camera to adjust the head position to the initial position.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the arrangement of the camera, the camera can store the images of the head shake of the patient in the designated folder of the shake frame in the detection process, so that the images are convenient for medical staff to check, and through the real-time movement detection of the movement amount of the head of the patient, the patient can be reminded not to move when the patient shakes slightly, so that the situation that the shake amplitude is enlarged is reduced, and on the other hand, the exposure can be stopped in time when the head of the patient shakes greatly, so that the damage of X-rays to the patient is reduced.
2. According to the invention, through the arrangement of the fixing component, after a patient finishes the positioning under the assistance of medical staff, the electric telescopic rods are started, the two electric telescopic rods drive the first circular ring to move downwards together, and the first circular ring moves downwards to drive the fixing component to move downwards, so that the fixing component can fix the head of the patient, the shaking of the head of the patient in the exposure process is reduced, after the camera detects that the head of the patient moves slightly, the control unit can control the adjusting component to start, and the adjusting component moves the head of the patient to the initial position, so that the occurrence of the condition that the head of the patient shakes greatly is reduced.
3. According to the invention, through the arrangement of the adjusting component, after the camera detects and judges that the head of the patient slightly moves, the relative movement between the head of the patient and the air bag is indicated, the control unit firstly controls the other electromagnetic valve to be opened, air compressed in the cylinder is filled into the air bag to enable the air bag to expand secondarily, the clamping force between the air bag and the head of the patient is increased, then the control unit controls the micro air pump to be started to release the limitation on the second circular ring, then the control unit controls the micro motor to be started, the micro motor drives the gear to rotate, the gear drives the annular rack to rotate, so that the second circular ring is driven to rotate, the second circular ring rotates to drive the air bag to rotate, the air bag drives the head of the patient to move, and the head of the patient is moved to the initial position, so that the situation that the head of the patient is prevented from shaking greatly is facilitated.
Drawings
FIG. 1 is a flow chart of the detection method of the present invention.
Fig. 2 is a schematic view of a first overall structure of the present invention.
Fig. 3 is an enlarged view of the structure of fig. 2 a according to the present invention.
Fig. 4 is a schematic diagram of a second overall structure of the present invention.
Fig. 5 is a schematic view of a part of the structure of the fixing assembly of the present invention.
Fig. 6 is a partial structural cross-sectional view of the fixing assembly of the present invention.
Fig. 7 is an enlarged view of the structure at B in fig. 6 according to the present invention.
Fig. 8 is a partial structural cross-sectional view of the adjustment assembly of the present invention.
Fig. 9 is an enlarged view of the structure at C in fig. 8 according to the present invention.
Fig. 10 is a schematic structural view of a connecting plate according to the present invention.
Fig. 11 is a sectional view showing the internal structure of the cylinder of the present invention.
Fig. 12 is an enlarged view of the structure of fig. 11D according to the present invention.
FIG. 13 is a flowchart of a specific fastening method according to the present invention.
FIG. 14 is a flow chart of a specific adjustment method of the present invention.
In the figure: 1. a frame; 2. a mounting base; 3. a positioning bracket; 4. a jaw support; 5. a camera; 6. an electric telescopic rod; 7. a first ring; 8. a second ring; 9. an air bag; 10. a pressure sensor; 11. a micro cylinder; 12. an extrusion plate; 13. a cylinder; 14. a round bar; 15. a connecting plate; 16. an electromagnetic valve; 17. a connecting pipe; 18. a micro motor; 19. a rotating lever; 20. a gear; 21. an annular rack; 22. a spring; 23. a seat swivel arm; 24. a seat; 25. a rotating arm; 26. an X-ray generating device; 27. a flat panel digital detector; 28. a bite bar; 29. a handle; 30. a touch screen; 31. a communication groove; 32. a cavity.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
As shown in fig. 2 to 12, a camera movement detection device for CBCT includes a frame 1, and further includes:
the mounting seat 2 is fixedly connected with the frame 1 through a supporting plate;
the positioning bracket 3 is arranged at the top of the mounting seat 2;
a jaw support 4 mounted on the top of the mounting base 2 for supporting the head of the patient;
the camera 5 is arranged at the top of the mounting seat 2 and is used for shooting the head gesture of a patient and recording moving data;
a control unit for judging the movement amount according to the change of the movement data after the camera 5 detects the movement of the head of the patient during the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount;
in a specific implementation process, a seat rotating arm 23 is installed at the bottom of a frame 1, a seat 24 is fixed at the top of the seat rotating arm 23, a rotating arm 25 is rotatably connected at the top of the frame 1, an X-ray generating device 26 is installed at one side of the bottom of the rotating arm 25, a flat-type digital detector 27 is installed at the other side of the bottom of the rotating arm 25, a tooth biting rod 28 is installed at the top of a jaw support 4, a handle 29 is installed at the bottom of a mounting seat 2, and a touch screen 30 is installed at one side of a supporting plate far away from the mounting seat 2;
in particular, in the CBCT scan process, the patient is required to place the head on the jaw support 4, and since the jaw support 4 in the prior art is mostly hard, the patient's head is easy to be uncomfortable when placed on the jaw support 4, and has a certain defect, and secondly, the head discomfort may cause the patient to generate a mind desiring to shake the head, and hopefully adjust a comfortable position by shaking the head, while the patient's head is shaking, if the shaking amplitude is large, the patient's head may cause artifacts in the CT scan result to cause unclear images, thereby affecting the viewing of a doctor and affecting the accuracy of the examination, and the embodiment of the present invention can solve the above problems by firstly, the patient sits on the seat 24, places the head on the jaw support 4, and the mouth is snapped into the recess on the bite bar 28, the forehead is attached to the side wall of the positioning bracket 3, the handle 29 is held by hands, the positioning is completed with the assistance of medical staff, in order to make the head of a patient more comfortable, a layer of soft cushion is placed on the jaw support 4, thereby reducing the feeling of a fluke generated when the head of the patient is placed on the jaw support 4, reducing the feeling of wanted shaking subjectively by the patient, being beneficial to the patient to maintain the stability of the head, then the medical staff starts the X-ray generating device 26 to start CT scanning on the head of the patient, the rotating arm 25 can rotate during CT scanning, the curved surface body layer and the CBCT image are obtained through the provided flat-plate type digital detector 27, when CT scanning on the patient is started, the control unit controls the camera 5 to start shooting detection, the head of the patient is shot detection in real time, the position coordinates of the head of the patient are shot by the camera 5, the coordinate value change is processed through a built-in processor to judge the movement amount of the head of the patient, if the detected displacement is smaller than 5, the movement amount is judged to be slightly swaying, a prompt of no movement is popped up on a software interface on the touch screen 30, and exposure is continued, if the detected displacement is larger than 5, the movement amount is judged to be greatly swaying, the software interface on the touch screen 30 pops up to finish the option of exposure or not, if the exposure is finished, the exposure process is terminated, the camera 5 stops shooting detection, if the exposure is continued, the device continues the exposure process until the normal finish, the camera 5 stops shooting detection, the camera 5 can save the swaying image of the head of the patient in a designated folder of a swaying frame in the detection process, the medical staff can conveniently check the swaying image, and through the real-time movement detection of the movement amount of the head of the patient, on one hand, the patient is not required to be moved when the swaying slightly, thereby being favorable for reducing the occurrence of the condition that the swaying amplitude is enlarged, and on the other hand, the exposure can be terminated in time when the head of the patient swaying greatly, so that the damage caused to the patient by X rays is reduced.
In a further implementation, the method further includes:
the two electric telescopic rods 6 are fixed on the side wall of the positioning bracket 3, and the telescopic ends of the two electric telescopic rods 6 are jointly fixed with a first circular ring 7;
the fixing component is arranged on the inner side of the first circular ring 7 and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera 5 detects that the head of the patient moves slightly in the exposure process;
specifically stated, after the patient finishes the location under medical personnel's assistance, start electric telescopic handle 6, two electric telescopic handle 6 drive first ring 7 downwardly moving jointly, first ring 7 downwardly moving drives fixed subassembly downwardly moving, so that fixed subassembly can fix patient's head, in order to reduce patient's rocking at exposure in-process head, after camera 5 detects patient's head slightly removes, the control unit can control the regulation subassembly and start, the regulation subassembly removes initial position with patient's head, thereby be favorable to reducing patient's head and rock great condition emergence.
In a further implementation, the securing assembly includes:
the second circular ring 8 is rotationally connected to the inner side of the first circular ring 7, and the second circular ring 8 is in sealing connection with the first circular ring 7;
an air bag 9 fixed to the inner side of the second ring 8;
a pressure sensor 10 fixed to the outer wall of the air bag 9;
an air intake assembly mounted on a side wall of the positioning bracket 3, the air intake assembly being for ventilating the inside of the airbag 9;
the limiting assembly is used for limiting the relative movement of the first circular ring 7 and the second circular ring 8;
the control unit is also used for controlling the limiting assembly to limit the first circular ring 7 and the second circular ring 8 when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring 7 and the second circular ring 8 when the position of the head of the patient is adjusted;
in a specific implementation process, a communication groove 31 is formed in the second circular ring 8, a cavity 32 is formed in the first circular ring 7, the communication groove 31 is communicated with the cavity 32, and the communication groove 31 is communicated with the air bag 9;
specifically stated, the electric telescopic rod 6 drives the first circular ring 7 to move downwards, the first circular ring 7 drives the second circular ring 8 to move downwards, the second circular ring 8 drives the air bag 9 to move downwards, after the pressure sensor 10 on the air bag 9 contacts with the head of a patient, the control unit controls the air inlet assembly to air inlet inside the air bag 9 according to the pressure information of the pressure sensor 10, the air bag 9 is contacted with the head of the patient to support and fix the head of the patient after being inflated, and the limiting assembly is used for limiting the second circular ring 8 and preventing the condition that the head of the patient moves due to the rotation of the second circular ring 8.
In a further implementation, the spacing assembly includes:
a micro cylinder 11 mounted inside the second ring 8;
an extrusion plate 12 fixed to the telescopic end of the micro cylinder 11;
specifically stated, after the electric telescopic rod 6 is started, the control unit controls the micro cylinder 11 to start, the micro cylinder 11 drives the extrusion plate 12 to move to extrude on the inner wall of the first circular ring 7, the first circular ring 7 and the second circular ring 8 are difficult to move relatively through extrusion force, and meanwhile the extrusion force can increase the air tightness of the sealing gasket to prevent air leakage.
In a further implementation, the air intake assembly includes:
the two cylinders 13 are rotatably connected to the side wall of the positioning bracket 3, and round rods 14 are slidably inserted into the tops of the two cylinders 13;
the peripheries of the two round rods 14 are fixedly connected with connecting plates 15, and the connecting plates 15 are fixedly connected with the telescopic ends of the corresponding electric telescopic rods 6;
the electromagnetic valves 16 are arranged in the two round rods 14, and the tops of the round rods 14 are fixedly communicated with the inside of the first circular ring 7 through connecting pipes 17;
specifically, in the process that the electric telescopic rod 6 drives the first circular ring 7 to move downwards, the electric telescopic rod 6 drives the connecting plate 15 to move downwards, the connecting plate 15 drives the round rod 14 to move towards the inside of the cylinder 13, so that gas inside the cylinder 13 is compressed, after the pressure sensor 10 contacts with the head of a patient, the control unit controls one of the electromagnetic valves 16 to be opened, compressed gas inside the cylinder 13 enters the cavity 32 along the connecting pipe 17, enters the air bag 9 from the cavity 32 along the connecting groove 31, and further the air bag 9 is inflated to fully contact the head of the patient.
In a further implementation, the adjustment assembly includes:
the two micro motors 18 are fixedly arranged at the bottoms of the connecting plates 15, the output shafts of the two micro motors 18 are fixedly provided with rotating rods 19, and the two rotating rods 19 penetrate through the corresponding connecting plates 15;
the top ends of the two rotating rods 19 are respectively fixed with a gear 20, the bottom of the second circular ring 8 is provided with an annular groove, the inner wall of the annular groove is fixed with an annular rack 21, and the two gears 20 are meshed with the annular rack 21;
specifically, after the camera 5 detects and judges that the head of the patient slightly moves, the relative movement between the head of the patient and the air bag 9 is described, firstly, the control unit controls the other electromagnetic valve 16 to open, air compressed in the cylinder 13 is filled into the air bag 9 to enable the air bag 9 to expand secondarily, the clamping force between the air bag 9 and the head of the patient is increased, then the control unit controls the micro air pump to be started to release the limitation on the second circular ring 8, then the control unit controls the micro motor 18 to be started, the micro motor 18 drives the gear 20 to rotate, the gear 20 drives the annular rack 21 to rotate, so that the second circular ring 8 is driven to rotate, the second circular ring 8 rotates to drive the air bag 9 to rotate, the air bag 9 drives the head of the patient to move, and the head of the patient is moved to the initial position, so that the occurrence of large shaking of the head of the patient is prevented.
In a further implementation process, a spring 22 is fixed inside the cylinder 13, and the top of the spring 22 is fixedly connected with the bottom of the round rod 14;
specifically, through the spring 22, in the process that the electric telescopic rod 6 drives the first circular ring 7 to move downwards, the spring 22 is compressed to start the buffer action on the descending of the second circular ring 8, so that the acting force of the downward movement of the second circular ring 8 on the head of a patient is reduced.
The control method of the camera movement detection device for CBCT shown in fig. 1 includes a frame 1, and further includes:
the mounting seat 2 is fixedly connected with the frame 1 through a supporting plate;
the positioning bracket 3 is arranged at the top of the mounting seat 2;
a jaw support 4 mounted on the top of the mounting base 2 for supporting the head of the patient;
the camera 5 is arranged at the top of the mounting seat 2 and is used for shooting the head gesture of a patient and recording moving data;
a control unit for judging the movement amount according to the change of the movement data after the camera 5 detects the movement of the head of the patient during the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount;
the two electric telescopic rods 6 are fixed on the side wall of the positioning bracket 3, and the telescopic ends of the two electric telescopic rods 6 are jointly fixed with a first circular ring 7;
the fixing component is arranged on the inner side of the first circular ring 7 and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera 5 detects that the head of the patient moves slightly in the exposure process;
the second circular ring 8 is rotationally connected to the inner side of the first circular ring 7, and the second circular ring 8 is in sealing connection with the first circular ring 7;
an air bag 9 fixed to the inner side of the second ring 8;
a pressure sensor 10 fixed to the outer wall of the air bag 9;
an air intake assembly mounted on a side wall of the positioning bracket 3, the air intake assembly being for ventilating the inside of the airbag 9;
the limiting assembly is used for limiting the relative movement of the first circular ring 7 and the second circular ring 8;
the control unit is also used for controlling the limiting assembly to limit the first circular ring 7 and the second circular ring 8 when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring 7 and the second circular ring 8 when the position of the head of the patient is adjusted;
the control method comprises the following steps:
the control unit controls the camera 5 to start detection according to the exposure start information;
the exposure process is controlled to be terminated or continued by a movement amount control unit detected by the camera 5;
the control unit controls the camera 5 to stop detection according to the exposure end information;
after the X-ray generating device 26 is started, the control unit controls the camera 5 to start detecting the head of the patient in real time, the exposure process continues after the camera 5 detects that the movement amount of the head of the patient is less than 5, the control unit controls the X-ray generating device 26 to stop emitting rays after the camera 5 detects that the movement amount of the head of the patient is greater than 5, and the camera 5 stops detecting after the X-ray generating device 26 stops emitting rays.
As shown in fig. 13, a control method of a camera movement detection device for CBCT, the specific fixing method of the fixing assembly includes the following steps:
the control unit controls the electric telescopic rod 6 to stop moving according to the pressure information of the pressure sensor 10;
the pressure information control unit according to the pressure sensor 10 controls the air inlet assembly to start to perform first air inlet to the air bag 9;
after the pressure sensor 10 contacts with the head of the patient, the control unit controls the electric telescopic rod 6 to stop running, and then the first circular ring 7 stops moving, and after the pressure sensor 10 contacts with the head of the patient, the control unit controls the air inlet assembly to start to perform first air inlet to the air bag 9.
As shown in fig. 14, a control method of a camera movement detection device for CBCT, the specific adjustment method of the adjustment assembly includes the following steps:
the air inlet assembly is controlled to carry out second air inlet to the air bag 9 according to the movement amount control unit detected by the camera 5;
the adjusting component is controlled by the moving amount control unit detected by the camera 5 to adjust the head position to an initial position;
wherein, after the camera 5 detects that the head of the patient moves and the movement amount is smaller than 5, the control unit controls the air inlet assembly to carry out air inlet for the second time to the inside of the air bag 9, and then the control unit controls the adjusting assembly to adjust the head to the initial position.
The working principle of the invention is as follows:
in the CBCT scan process, the patient is required to place the head on the jaw support 4, and the jaw support 4 in the prior art is hard, so that the patient's head is uncomfortable when placed on the jaw support 4, and has certain defects, and secondly, the head discomfort may cause the patient to generate a mind desiring to shake the head, and hopefully adjust a comfortable position by shaking the head, while the patient's head is shaking, if the shaking amplitude is large, artifacts appear in the CT scan result, so that the image is unclear, thereby affecting the viewing of a doctor and affecting the accuracy of the examination, and this embodiment of the present invention can solve the above problems, in particular embodiments, the patient sits on the seat 24, places the head on the jaw support 4, and the mouth is snapped into the groove on the clenching bar 28, the forehead is attached to the side wall of the positioning bracket 3, the handle 29 is held by hands, the positioning is completed with the assistance of medical staff, in order to make the head of a patient more comfortable, a layer of soft cushion is placed on the jaw support 4, thereby reducing the feeling of a fluke generated when the head of the patient is placed on the jaw support 4, reducing the feeling of wanted shaking subjectively by the patient, being beneficial to the patient to maintain the stability of the head, then the medical staff starts the X-ray generating device 26 to start CT scanning on the head of the patient, the rotating arm 25 can rotate during CT scanning, the curved surface body layer and the CBCT image are obtained through the provided flat-plate type digital detector 27, when CT scanning on the patient is started, the control unit controls the camera 5 to start shooting detection, the head of the patient is shot detection in real time, the position coordinates of the head of the patient are shot by the camera 5, the coordinate value change is processed through a built-in processor to judge the movement amount of the head of the patient, if the detected displacement is smaller than 5, the movement amount is judged to be slightly swaying, a prompt of no movement is popped up on a software interface on the touch screen 30, and exposure is continued, if the detected displacement is larger than 5, the movement amount is judged to be greatly swaying, the software interface on the touch screen 30 pops up to finish the option of exposure or not, if the exposure is finished, the exposure process is terminated, the camera 5 stops shooting detection, if the exposure is continued, the device continues the exposure process until the normal finish, the camera 5 stops shooting detection, the camera 5 can save the swaying image of the head of the patient in a designated folder of a swaying frame in the detection process, the medical staff can conveniently check the swaying image, and through the real-time movement detection of the movement amount of the head of the patient, on one hand, the patient is not required to be moved when the swaying slightly, thereby being favorable for reducing the occurrence of the condition that the swaying amplitude is enlarged, and on the other hand, the exposure can be terminated in time when the head of the patient swaying greatly, so that the damage caused to the patient by X rays is reduced.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a camera removal detection device for CBCT, includes frame (1), its characterized in that still includes:
the mounting seat (2) is fixedly connected with the frame (1) through a supporting plate;
the positioning bracket (3) is arranged at the top of the mounting seat (2);
the jaw support (4) is arranged at the top of the mounting seat (2) and is used for supporting the head of a patient;
the camera (5) is arranged at the top of the mounting seat (2) and is used for shooting the head gesture of a patient and recording moving data;
the control unit is used for judging the movement amount according to the change of the movement data after the camera (5) detects the movement of the head of the patient in the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount;
further comprises:
the two electric telescopic rods (6) are fixed on the side wall of the positioning bracket (3), and the telescopic ends of the two electric telescopic rods (6) are jointly fixed with a first circular ring (7);
the fixing component is arranged on the inner side of the first circular ring (7) and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera (5) detects that the head of the patient moves slightly in the exposure process;
the fixing assembly includes:
the second circular ring (8) is rotationally connected to the inner side of the first circular ring (7), and the second circular ring (8) is in sealing connection with the first circular ring (7);
an air bag (9) fixed to the inner side of the second ring (8);
a pressure sensor (10) fixed on the outer wall of the air bag (9);
an air inlet assembly mounted on a side wall of the positioning bracket (3) for venting the interior of the airbag (9);
the limiting assembly is used for limiting the relative movement of the first circular ring (7) and the second circular ring (8);
the control unit is also used for controlling the limiting assembly to limit the first circular ring (7) and the second circular ring (8) when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring (7) and the second circular ring (8) when the position of the head of the patient is adjusted;
the spacing subassembly includes:
the micro cylinder (11) is fixed inside the second circular ring (8);
the extrusion plate (12) is fixed at the telescopic end part of the micro cylinder (11);
the air intake assembly includes:
the two cylinders (13) are rotationally connected to the side wall of the positioning bracket (3), and round rods (14) are slidably inserted at the tops of the two cylinders (13);
the peripheries of the two round rods (14) are fixedly connected with connecting plates (15), and the connecting plates (15) are fixedly connected with the telescopic ends of the corresponding electric telescopic rods (6);
the inside of two round bars (14) is all installed solenoid valve (16), the top of round bar (14) pass through connecting pipe (17) with the inside fixed intercommunication of first ring (7).
2. The CBCT camera movement detection device of claim 1, wherein the adjustment assembly comprises:
the two micro motors (18) are fixedly arranged at the bottoms of the connecting plates (15), rotating rods (19) are fixed on output shafts of the two micro motors (18), and the two rotating rods (19) penetrate through the corresponding connecting plates (15);
the top ends of the two rotating rods (19) are respectively fixed with a gear (20), an annular groove is formed in the bottom of the second circular ring (8), an annular rack (21) is fixed on the inner wall of the annular groove, and the two gears (20) are meshed with the annular racks (21).
3. The camera movement detection device for CBCT according to claim 2, wherein a spring (22) is fixed inside the cylinder (13), and the top of the spring (22) is fixedly connected with the bottom of the round bar (14).
4. A control method of a camera movement detection device for CBCT, the control method being applied to a camera movement detection device for CBCT according to claim 3, characterized by comprising a frame (1), further comprising:
the mounting seat (2) is fixedly connected with the frame (1) through a supporting plate;
the positioning bracket (3) is arranged at the top of the mounting seat (2);
the jaw support (4) is arranged at the top of the mounting seat (2) and is used for supporting the head of a patient;
the camera (5) is arranged at the top of the mounting seat (2) and is used for shooting the head gesture of a patient and recording moving data;
the control unit is used for judging the movement amount according to the change of the movement data after the camera (5) detects the movement of the head of the patient in the exposure process, and then controlling the termination or continuation of the exposure process according to the movement amount;
the two electric telescopic rods (6) are fixed on the side wall of the positioning bracket (3), and the telescopic ends of the two electric telescopic rods (6) are jointly fixed with a first circular ring (7);
the fixing component is arranged on the inner side of the first circular ring (7) and is used for fixing the head of a patient;
an adjustment assembly for adjusting the moved patient's head to a home position;
the control unit is also used for controlling the adjusting component to move the head of the patient to the initial position after the camera (5) detects that the head of the patient moves slightly in the exposure process;
the second circular ring (8) is rotationally connected to the inner side of the first circular ring (7), and the second circular ring (8) is in sealing connection with the first circular ring (7);
an air bag (9) fixed to the inner side of the second ring (8);
a pressure sensor (10) fixed on the outer wall of the air bag (9);
an air inlet assembly mounted on a side wall of the positioning bracket (3) for venting the interior of the airbag (9);
the limiting assembly is used for limiting the relative movement of the first circular ring (7) and the second circular ring (8);
the control unit is also used for controlling the limiting assembly to limit the first circular ring (7) and the second circular ring (8) when the fixing assembly is used for fixing the head of the patient, and releasing the limitation of the first circular ring (7) and the second circular ring (8) when the position of the head of the patient is adjusted;
the control method comprises the following steps:
controlling the camera (5) to start detection according to the exposure start information control unit;
the exposure process is controlled to be terminated or continued by a movement amount control unit detected by the camera (5);
the control unit controls the camera (5) to stop detection according to the exposure end information.
5. The control method of the camera movement detection device for CBCT according to claim 4, wherein the specific fixing method of the fixing component comprises:
the control unit controls the electric telescopic rod (6) to stop moving according to the pressure information of the pressure sensor (10);
the pressure information control unit according to the pressure sensor (10) controls the air inlet assembly to start to perform first air inlet to the air bag (9).
6. The control method of the camera movement detection device for CBCT according to claim 4, wherein the specific adjustment method of the adjustment assembly comprises:
the air inlet assembly is controlled to carry out secondary air inlet to the air bag (9) according to the movement amount control unit detected by the camera (5);
the adjusting component is controlled by the moving amount control unit according to the detection of the camera (5) to adjust the head position to the initial position.
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| CN202410064741.XA CN117598718B (en) | 2024-01-17 | 2024-01-17 | Camera movement detection device for CBCT and control method thereof |
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