CN218305110U

CN218305110U - DSA physical controller

Info

Publication number: CN218305110U
Application number: CN202221680535.4U
Authority: CN
Inventors: 黄韬; 曹金磊
Original assignee: Beijing Wemed Medical Equipment Co Ltd
Current assignee: Beijing Wemed Medical Equipment Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-01-17
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a DSA object type controller, include: the DSA simulator is arranged in the control chamber and comprises a controller base, an upright base, a first upright, a connecting piece, a C arm, an extension piece and a flat plate; the monitoring device is arranged beside the DSA in the conduit chamber and is used for monitoring the environment around the DSA and transmitting the shot video; the first touch screen is arranged in the control room and used for displaying the video image transmitted by the monitoring device, displaying the action information for operating the DSA simulator and setting corresponding parameters; and the host computer is arranged in the control room and used for receiving, sending, storing and processing data of the DSA simulator, the monitoring device and the first touch screen and converting the data into command information for the DSA. A doctor can control each motion axis of the DSA simulator to debug the DSA pose of the model, and the host can acquire and synchronously transmit signals to the DSA in the catheter chamber, so that the DSA and the physical DSA controller can synchronously move, and the doctor can operate the DSA more intuitively and conveniently.

Description

DSA physical controller

Technical Field

The utility model belongs to wicresoft's blood vessel intervenes operation field relates to the control technique to DSA in the intervention operation, and more specifically says, relates to a DSA real object type controller.

Background

Nearly 3000 thousands of people die of cardiovascular and cerebrovascular diseases every year around the world, accounting for about 30% of all disease mortality rates, wherein the number of people suffering from cardiovascular and cerebrovascular diseases in China is nearly 3 hundred million. Cardiovascular and cerebrovascular diseases become one of three main causes of human disease death, and seriously affect national health and normal life of people.

The minimally invasive interventional therapy of the cardiovascular and cerebrovascular diseases is a main treatment means aiming at the cardiovascular and cerebrovascular diseases. Compared with the traditional surgical operation, has the obvious advantages of small incision, short postoperative recovery time and the like. The cardiovascular and cerebrovascular interventional operation is a process in which a doctor manually feeds a catheter, a guide wire, a bracket and other instruments into a patient to complete treatment.

However, DSA is necessary for the intervention. The existing DSA control box is arranged on a guide rail on the side surface of a catheter bed, and the angle of a DSA handpiece, the height of a DSA flat plate and the like need to be frequently adjusted in the operation so as to ensure that the optimal viewing effect is obtained. During the imaging or exposure process, the physician typically walks out of the catheter room to reduce radiation damage. Multiple exposures and exposures are typically used during the procedure. To control DSA, the physician must then access the catheterization room with a lead garment to operate.

At present, the domestic medical remote control DSA has the following problems: (1) Lacking a device for remotely controlling the DSA, a doctor has to enter a catheter room and stand beside a catheter bed to complete the operation of the DSA; (2) Doctors frequently enter and exit the catheter room during operation, which causes the reduction of operation efficiency; (3) there are no security safeguards that can be remotely controlled; (4) Because of remote control of DSA, a doctor is not intuitive enough to view the morphology of DSA; (5) There is a lack of devices that can facilitate the DSA operation by the doctor and reduce the learning time.

Therefore, how to provide a DSA control device to overcome the above problems is an important research direction for those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of DSA physical object formula controller, its aim at solve not have the remote control DSA device of direct-viewing formula in the present stage, the doctor must frequently pass in and out the catheter chamber, leads to operation efficiency to reduce, and the contact has the fungus article easily to appear, and the DSA control of long distance formula is directly perceived inadequately, and control efficiency is low, lacks remote control protection device, the complicated doctor study time long scheduling problem of device operation.

Therefore, the utility model provides a DSA object type controller, include:

the DSA simulator is arranged in the control room and comprises a controller base, an upright post base, a first upright post, a connecting piece, a C arm, an extension piece and a flat plate, wherein the controller base is arranged on a table of the control room, the top surface of the controller base is connected with the bottom surface of the upright post base through a first servo motor, a motor main body of the first servo motor is connected with the controller base, and an output shaft of the first servo motor is connected with the upright post base so as to control the upright post base to rotate relative to the controller base; the top surface of the upright post base is connected with the bottom surface of the first upright post through a second servo motor, a motor main body of the second servo motor is connected with the upright post base, and an output shaft is connected with the first upright post so as to control the first upright post to rotate relative to the upright post base; the side surface of the upper part of the first upright post is connected with the rear end of the connecting piece through a third servo motor, a motor main body of the third servo motor is connected with the first upright post, and an output shaft is connected with the connecting piece so as to control the connecting piece to rotate relative to the first upright post; the front end of the connecting piece is a sliding chute, the middle C-shaped section of the C arm is connected with the sliding chute through a fourth servo motor, and the fourth servo motor can control the middle C-shaped section of the C arm to move in the sliding chute of the connecting piece along the arc direction of the middle C-shaped section; the upper end of the C arm is hollow and is provided with an opening at the bottom, the extension piece is embedded into the corresponding upper end groove of the C arm through the bottom opening in a matching manner and is connected with the C arm through a fifth servo motor, and the fifth servo motor can control the extension piece to move in the upper end groove of the C arm in a telescopic manner; the lower end of the extension piece is connected with a connecting device at the center of the top surface of the flat plate through a sixth servo motor, a motor body of the sixth servo motor is connected with the extension piece, and an output shaft is connected with the connecting device on the flat plate so as to control the flat plate to rotate relative to the extension piece;

the monitoring device is arranged beside the DSA in the conduit chamber and is used for monitoring the environment around the DSA and transmitting the shot video;

the first touch screen is arranged in the control room and used for displaying the video image transmitted by the monitoring device, displaying the action information for operating the DSA simulator and setting corresponding parameters;

the host computer is arranged in the control room and used for receiving, sending, storing and processing data of the DSA simulator, the monitoring device and the first touch screen and converting the data into command information for the DSA; the host is electrically connected with the monitoring device and the first touch screen, is electrically connected with six servo motors on the DSA simulator, and is simultaneously electrically connected with six corresponding servo motors on the DSA in the conduit chamber.

By adopting the technical scheme, the utility model relates to a DSA physical controller is used for intervene in the operation, is a remote control DSA's device. The remote control device is a physical DSA simulator, a doctor can control each motion axis of the DSA simulator to debug the DSA pose of the model, and a system in the host can acquire and synchronously transmit signals to the DSA in the catheter chamber, so that the DSA and the physical DSA controller can synchronously move, and the doctor can operate the DSA more intuitively and conveniently. The doctor can complete the whole adjustment process of DSA in interventional operations such as DSA head positioning, DSA flat plate adjustment, DSA exposure setting and the like in the control room. The monitoring device in the catheter chamber can enable a doctor to view the environment around the DSA in real time, and the safety in operation is guaranteed.

On the basis of the technical scheme, the utility model discloses still can make following improvement:

preferably, a motor main body of the fourth servo motor is installed in a chute of the connecting piece, and a first gear is installed on an output shaft; a first tooth groove meshed with the first gear is formed in the outer peripheral face of the middle C-shaped section of the C arm, an output shaft of the fourth servo motor drives the first gear to rotate, and the first gear drives the middle C-shaped section of the C arm to move in the sliding groove of the connecting piece along the arc direction.

Preferably, the two sides of the middle C-shaped section of the C arm are provided with limit grooves along the arc direction, and the two side walls of the sliding groove of the connecting piece are provided with limit blocks correspondingly matched with the limit grooves.

Preferably, a motor body of the fifth servo motor is arranged in a groove at the upper end of the C arm, and a second gear is arranged on an output shaft; a second gear groove meshed with the first gear is formed in the side wall of the extension piece, an output shaft of a fifth servo motor drives the second gear to rotate, and the second gear drives the extension piece to move in a telescopic mode in a groove in the upper end of the C arm.

Preferably, the monitoring device comprises a bottom plate, universal wheels are mounted on the lower bottom surface of the bottom plate, and a second upright post is fixed on the upper surface of the bottom plate; a motor support is fixed at the top end of the second upright column, a monitoring device motor is fixed on the motor support, and an output shaft of the monitoring device motor is fixed with the lower end of the camera support to drive the camera support to swing up and down; the camera support is provided with a second touch screen and a camera; the monitoring device motor, the second touch screen and the camera are electrically connected with the host.

Preferably, a group of cameras are respectively mounted on the camera supports at the left and right sides of the second touch screen.

Preferably, the first touch screen comprises a touch screen main body, a support and a shell, and the touch screen main body and the support are integrally fixed on the shell after being fixedly connected at the rear end of the touch screen main body.

Compared with the prior art, the utility model relates to a DSA material object type controller has following beneficial effect:

1. the utility model discloses the device is through principal and subordinate control's mode, and the doctor realizes the control action to DSA through operating the DSA simulator, has realized that the doctor need not to get into the operating room, can accomplish all control actions to DSA, has improved operation efficiency greatly.

2. The utility model discloses DSA simulator and the indoor DSA of pipe in the device carry out the synchronization action, and the doctor can audio-visually observe DSA's position appearance.

3. The utility model discloses the device, doctor can be through directly with each movement axis (the output shaft that servo motor corresponds) that hand manipulation removed DSA simulator, easy operation is directly perceived, easily the doctor is handed, the device practicality is strong.

4. The utility model discloses install overall structure simple, stability is good, adopts the modular mode, is convenient for assemble and debug.

5. The utility model discloses the device is furnished with a plurality of cameras and touch-sensitive screen, and the doctor can watch the action condition of the indoor DSA of pipe in real time for the operation is safer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a front overall schematic view of a DSA simulator;

FIG. 2 is a schematic view of the back of a DSA simulator;

FIG. 3 is an exploded view of a DSA simulator;

FIG. 4 is a schematic diagram of a DSA simulator default pose;

5-10 are schematic diagrams of single-axis rotation poses of the DSA simulator, which are 6 axes in total;

FIG. 11 is a schematic front view of a monitoring device;

FIG. 12 is a schematic view of a back side of the monitoring device;

FIG. 13 is a schematic illustration of an explosion of the monitoring device;

FIG. 14 is a schematic view of a first touch screen structure;

FIG. 15 is an exploded view of a first touch screen;

FIG. 16 is a schematic diagram of a host architecture;

in the figure: 1-DSA simulator, 2-controller base, 3-upright base, 4-first upright, 5-connecting piece, 6-C arm, 7-extending piece, 8-flat plate, 9-monitoring device, 10-first touch screen, 11-host, 12-limiting groove, 13-bottom plate, 14-universal wheel, 15-second upright, 16-motor support, 17-monitoring device motor, 18-camera support, 19-second touch screen, 20-camera, 21-touch screen main body, 22-support and 23-shell.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The embodiment is as follows:

as shown in fig. 1, 2 and 3, the DSA physical controller of the present invention is divided into four parts, namely, a DSA simulator 1, a monitoring device 9, a first touch screen 10 and a host 11. The DSA simulator 1 and the first touch screen 10 are operated by a surgeon in a control room during surgery to synchronously control the motion of the DSA in real time.

Wherein the content of the first and second substances,

the integral device of the DSA simulator 1 is a simulation model of DSA, is placed on a table of a control room for use, and comprises a controller base 2, a stand base 3, a first stand 4, a connecting piece 5, a C arm 6, an extending piece 7 and a flat plate 8.

The controller base 2 is placed on a table of a control room, the top surface of the controller base 2 is connected with the bottom surface of the upright post base 3 through a first servo motor, the motor body of the first servo motor is connected with the controller base 2, and the output shaft is connected with the upright post base 3 so as to control the upright post base 3 to rotate relative to the controller base 2 (refer to the part indicated by an arrow shown in fig. 5); the top surface of the upright base 3 is connected with the bottom surface of the first upright 4 through a second servo motor, the motor body of the second servo motor is connected with the upright base 3, and the output shaft is connected with the first upright 4 so as to control the first upright 4 to rotate relative to the upright base 3 (refer to the part indicated by the arrow shown in fig. 6); the upper side surface of the first upright post 4 is connected with the rear end of the connecting piece 5 through a third servo motor, the motor body of the third servo motor is connected with the first upright post 4, and an output shaft is connected with the connecting piece 5 so as to control the connecting piece 5 to rotate relative to the first upright post 4 (refer to the part indicated by an arrow in fig. 7); the front end of the connecting piece 5 is a chute, the middle C-shaped section of the C arm 6 is connected with the chute through a fourth servo motor, and the fourth servo motor can control the middle C-shaped section of the C arm 6 to move in the chute of the connecting piece 5 along the arc direction (refer to the part indicated by the arrow shown in fig. 8); the upper end of the C arm 6 is hollow and is provided with an opening at the bottom, the extension piece 7 is inserted into a corresponding upper end groove of the C arm 6 through the bottom opening in a matching manner and is connected with the C arm 6 through a fifth servo motor, and the fifth servo motor can control the extension piece 7 to move in a telescopic manner in the upper end groove of the C arm 6 (refer to the part indicated by an arrow shown in fig. 9); the lower end of the extension 7 is connected to the connection means in the centre of the top surface of the plate 8 by means of a sixth servomotor, the motor body of which is connected to the extension 7, and the output shaft is connected to the connection means on the plate 8, in order to control the rotation of the plate 8 relative to the extension 7 (see the part indicated by the arrow in fig. 10).

Further, a motor main body of a fourth servo motor is arranged in a sliding groove of the connecting piece 5, and a first gear is arranged on an output shaft; a first tooth socket meshed with the first gear is formed in the outer peripheral face of the middle C-shaped section of the C arm 6, an output shaft of the fourth servo motor drives the first gear to rotate, and the first gear drives the middle C-shaped section of the C arm 6 to move in the sliding groove of the connecting piece 5 along the arc direction.

Meanwhile, limiting grooves 12 are formed in two sides of the middle C-shaped section of the C arm 6 along the arc direction of the middle C-shaped section, limiting blocks correspondingly matched with the limiting grooves 12 are arranged on two side walls of the sliding groove of the connecting piece 5, and the limiting grooves 12 are matched with the limiting blocks to enable the middle C-shaped section of the C arm 6 to stably move in the sliding groove of the connecting piece 5 along the arc direction of the middle C-shaped section.

Furthermore, a motor main body of a fifth servo motor is arranged in a groove at the upper end of the C-shaped arm 6, and a second gear is arranged on an output shaft; a second gear groove meshed with the first gear is formed in the side wall of the extension piece 7, an output shaft of the fifth servo motor drives the second gear to rotate, and the second gear drives the extension piece 7 to move in a telescopic mode in a groove in the upper end of the C arm 6.

Six servo motors in the DSA simulator are correspondingly installed on corresponding structures through motor supports, and the six servo motors and the motor supports are not shown in the drawing.

The DSA simulator 1 is used for a doctor to remotely control a DSA, and is a device which has the same appearance as a DSA and can perform the same motion as the DSA. The doctor only needs to operate on the DSA simulator 1 to send out an instruction, and the DSA can perform synchronous action after receiving the instruction. The DSA simulator 1 is provided with six movable parts, each part is provided with a servo motor, a doctor can control the corresponding servo motor to freely rotate an output shaft of the servo motor, the system can record and collect the actions of the doctor, and the actions are transmitted to a control terminal of the DSA in real time to indicate the DSA to move.

The utility model provides a monitoring devices 9 is used for keeping watch on the environment around the DSA and goes out the video transmission who shoots, lets the doctor master the motion condition of DSA in real time. The monitoring device 9 is arranged beside the DSA in the catheter chamber, the video signal can be transmitted to the control chamber in real time, and a doctor can watch whether the motion of the DSA is abnormal or not at any time.

Specifically, as shown in fig. 11, 12 and 13, the monitoring device 9 includes a bottom plate 13, universal wheels 14 are mounted on the bottom surface of the bottom plate 13, generally one universal wheel is mounted at each of four corners, and the universal wheels 14 allow the device to move flexibly in the conduit room. The upper surface of bottom plate 13 is fixed second stand 15, and motor support 16 is fixed on the top of second stand 15, and monitoring devices motor 17 is fixed on motor support 16, and monitoring devices motor 17's output shaft is fixed with the lower extreme of camera support 18, drives camera support 18 luffing motion to obtain better observation angle. The camera support 18 is provided with a second touch screen 19 and a camera 20, and the second touch screen 19 is used for displaying pictures and parameter settings of the camera 20; the monitoring device motor 17, the second touch screen 19 and the camera 20 are electrically connected with the host 11.

Further, a group of cameras 20 are mounted on the camera supports 18 at left and right positions of the second touch screen 19.

The monitoring device in this embodiment comprises two cameras 20, a second touch screen 19, and a movable camera support 18. When the monitoring device is used, the monitoring device can be flexibly placed at each position of a catheter room, and the monitoring device motor 17 capable of adjusting the angle at any time is arranged on the camera support 18. After the use is finished, the device can be placed in a corner without influencing the use of other devices.

The utility model provides a control room is arranged in to first touch-sensitive screen 10 for the video image that shows monitoring devices 9 transmission, the action information of demonstration operation DSA simulator 1 and setting up corresponding parameter, the doctor can be through the indoor condition of camera picture real-time observation pipe on the first touch-sensitive screen 10. At the same time, the currently performed actions on the DSA simulator 1, status information, parameter settings, etc. are also displayed on the first touch screen 10, and all performed actions of the DSA simulator 1 can be recorded.

Specifically, as shown in fig. 14 and 15, the first touch screen 10 includes a touch screen main body 21, a bracket 22, and a housing 23, the touch screen main body 21 is used for displaying device information, an environmental image, and the like, and after the rear end of the touch screen main body 21 is fixedly connected to the bracket 22, the touch screen main body and the bracket are integrally fixed to the housing 23.

That is, the real-time screen of the camera 20 and the information of the DSA simulator 1 are synchronized on the first touch screen 10, so that the doctor can grasp the motion situation of the DSA in the operating room and the state situation of the DSA simulator 1 at any time. In addition, the first touch screen 10 can also record some operation information, set system parameters, record operation, and the like, so that the doctor can conveniently perform review and teaching.

As shown in fig. 16, the host 11 of the present invention is disposed in the control room, and is used for receiving, sending, storing and processing data of the DSA simulator 1, the monitoring device 9 and the first touch screen 10, and converting the data into command information for DSA; the host 11 is electrically connected with the monitoring device 9, the first touch screen 10, and six servo motors on the DSA simulator 1, and simultaneously electrically connected with corresponding six servo motors on the DSA in the catheter chamber.

As shown in fig. 4-10, fig. 4 shows the pose of the default DSA simulator 1, and after the system is powered on, the DSA will be restored to the default state. Fig. 5-10 show the motion of the DSA simulator 1 corresponding to the rotation of the output shaft of each servomotor. The doctor can rotate each motor output shaft to reach a desired position, after the movement is stopped, the DSA model can keep the position, and meanwhile, the servo motor corresponding to each output shaft can receive, record and transmit the motor rotation information to the host 11. When the doctor operates the DSA simulator 1 to move, the DSA receives a signal and performs a synchronization operation. Thus, remote control can be realized. Because the DSA simulator 1 and the DSA have the same shape, a doctor can intuitively feel the action of the DSA, and the operation mode is more convenient for the doctor to control the DSA to reach a desired position and angle, and the operation is more concise.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DSA physical controller comprising:

the DSA simulator is arranged in the control room and comprises a controller base, an upright post base, a first upright post, a connecting piece, a C arm, an extension piece and a flat plate, wherein the controller base is arranged on a table of the control room, the top surface of the controller base is connected with the bottom surface of the upright post base through a first servo motor, a motor main body of the first servo motor is connected with the controller base, and an output shaft of the first servo motor is connected with the upright post base; the top surface of the upright post base is connected with the bottom surface of the first upright post through a second servo motor, a motor main body of the second servo motor is connected with the upright post base, and an output shaft is connected with the first upright post; the side surface of the upper part of the first upright post is connected with the rear end of the connecting piece through a third servo motor, a motor main body of the third servo motor is connected with the first upright post, and an output shaft is connected with the connecting piece; the front end of the connecting piece is a chute, the middle C-shaped section of the C arm is connected with the chute through a fourth servo motor, and the fourth servo motor can control the middle C-shaped section of the C arm to move in the chute of the connecting piece along the arc direction of the middle C-shaped section; the upper end of the C arm is hollow and is provided with an opening at the bottom, the extending piece is inserted into the corresponding upper end groove of the C arm through the opening at the bottom in a matching manner and is connected with the C arm through a fifth servo motor, and the fifth servo motor can control the extending piece to move in the upper end groove of the C arm in a telescopic manner; the lower end of the extension piece is connected with a connecting device at the center of the top surface of the flat plate through a sixth servo motor, a motor body of the sixth servo motor is connected with the extension piece, and an output shaft is connected with the connecting device on the flat plate;

2. The DSA physical controller according to claim 1, wherein a motor body of the fourth servo motor is installed in a chute of the connecting member, and a first gear is installed on the output shaft; a first tooth groove meshed with the first gear is formed in the outer peripheral face of the middle C-shaped section of the C arm, an output shaft of the fourth servo motor drives the first gear to rotate, and the first gear drives the middle C-shaped section of the C arm to move in the sliding groove of the connecting piece along the arc direction.

3. The physical DSA controller of claim 2, wherein two sides of the middle C-shaped section of the C-arm are provided with a limiting groove along the arc direction, and two side walls of the sliding groove of the connecting member are provided with limiting blocks correspondingly matched with the limiting grooves.

4. A DSA physical controller as claimed in claim 1 or 2 wherein the motor body of the fifth servomotor is mounted in a recess in the upper end of the C-arm, and the output shaft is provided with a second gear; a second gear groove meshed with the first gear is formed in the side wall of the extension piece, an output shaft of a fifth servo motor drives the second gear to rotate, and the second gear drives the extension piece to move in a telescopic mode in a groove in the upper end of the C arm.

5. The DSA physical controller of claim 1 wherein the monitoring means comprises a base plate, the lower surface of the base plate being mounted with universal wheels and the upper surface being secured with the second posts; a motor support is fixed at the top end of the second upright column, a monitoring device motor is fixed on the motor support, and an output shaft of the monitoring device motor is fixed with the lower end of the camera support to drive the camera support to swing up and down; the camera support is provided with a second touch screen and a camera; the monitoring device motor, the second touch screen and the camera are electrically connected with the host.

6. The DSA physical controller of claim 5 wherein a set of cameras are mounted on each camera holder at left and right positions on the second touch screen.

7. The DSA physical controller of claim 1 wherein the first touch screen comprises a touch screen body, a bracket and a housing, and the touch screen body and the bracket are integrally fixed to the housing after the rear end of the touch screen body is fixedly connected to the bracket.