CN114366139A - Safe and efficient stereoscopic imaging inspection equipment for radiology department - Google Patents

Abstract

The invention discloses safe and efficient stereoscopic imaging examination equipment for a radiology department, and relates to the technical field of medical instruments. According to the invention, the linear motor can be driven to rotate by the rotating shaft through the first motor at the outer end of the support table, so that the linear motor can be converted from horizontal placement to longitudinal placement, and the linear motor can drive the sliding seat, the displacement assembly and the CT machine to rotate together in the rotating process, so that the CT machine can be converted from horizontal placement to longitudinal placement.

Description

Safe and efficient stereoscopic imaging inspection equipment for radiology department

Technical Field

The invention relates to the technical field of medical instruments, in particular to safe and efficient stereoscopic imaging examination equipment for a radiology department.

Background

CT (computed tomography), that is, electronic computed tomography, which uses precisely collimated X-ray beams, gamma rays, ultrasonic waves, etc. to scan the cross-section of a human body one by one together with a detector with extremely high sensitivity, has the characteristics of fast scanning time, clear image, etc., and can be used for the examination of various diseases, thus making CT the most common examination equipment in the radiology department, and can be divided into: x-ray CT and gamma-ray CT.

The common CT machine in the market has a single detection mode, and can only carry out independent vertical detection or horizontal detection generally, but the principles of vertical detection and horizontal detection are basically the same, but when a medical institution purchases the CT machine, in order to consider the use scene and the practical surface, various types of CT machines generally need to be purchased, which easily causes the waste of funds.

Disclosure of Invention

The invention aims to provide a safe and efficient stereoscopic imaging and checking device for radiology department, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a safe efficient three-dimensional formation of image inspection equipment of radiology department, includes brace table, linear electric motor and CT machine, the outer end of brace table is connected with first motor, and the inboard of brace table is provided with the axis of rotation, linear electric motor settles in the outer end of axis of rotation, and linear electric motor's inboard is connected with the seat that slides, the outer end of the seat that slides is connected with the displacement platform, and the inboard of displacement platform is provided with the displacement subassembly, the CT machine settles in the outer end of displacement subassembly, and the outside both sides of CT machine are connected with the camera, linear electric motor's terminal arrangement has the fixing base, and linear electric motor's outside both sides are connected with the radiation protection subassembly, the inboard of CT machine is provided with the flat platform of lying.

Furthermore, the first motor is rotatably connected with the linear motor through a rotating shaft, and the first motor is fixedly connected with the support table.

Further, the linear motor is connected with the sliding seat in a sliding mode, and the sliding seat is fixedly connected with the displacement table through bolts.

Further, the displacement subassembly includes second motor, lead screw, lift seat, bearing frame and butt plate, the bottom outside of second motor is connected with the lead screw, and the outer end of lead screw is provided with the lift seat, the outer end of lift seat is connected with the bearing frame, and the outer end of bearing frame is provided with the butt plate.

Furthermore, the lead screw is in threaded connection with the lifting seat, and the lifting seat is connected with the bearing seat in a sleeved mode.

Furthermore, the butt joint plate is connected with the bearing seat in a welding mode and is attached to the outer surface of the CT machine.

Furthermore, the cameras are symmetrically distributed along the vertical central line of the CT machine, and the cameras are arranged at two ends of the CT machine.

Furthermore, the radiation protection assembly comprises a placing seat, a concave groove and a radiation protection plate, wherein the concave groove is formed in the inner side of the placing seat, and the radiation protection plate is connected to the inner side of the concave groove.

Furthermore, the size and shape of the concave groove are consistent with the internal size and shape of the radiation-proof plate, and the radiation-proof plate and the linear motor are vertically distributed.

Furthermore, the radiation protection plate is connected with the placing seat in a clamping mode, and the radiation protection plate is evenly arranged at the upper end and the lower end of the linear motor.

The invention provides safe and efficient stereoscopic imaging examination equipment for a radiology department, which has the following beneficial effects: the CT machine can be accurately suspended to carry out detailed detection on the human body at a specified place, the CT machine can be driven to carry out displacement together in the process of carrying out up-and-down displacement on the butt plate, the CT machine can be adjusted according to the body and the lying posture of the patient in the process of detecting the patient, the CT machine can be enabled to be close to the human body as far as possible to improve the detection precision, and the CT machine can be moved away from the human body to avoid collision with the limbs of the patient in the displacement process at the moment of being in contact with the human body, the first motor of brace table outer end carries out work, it rotates to enable the axis of rotation to drive linear electric motor, this makes linear electric motor can change and vertically place from transversely placing the conversion, and linear electric motor is at rotatory in-process, can drive the seat that slides, displacement subassembly and CT machine are together rotatory, this makes the CT machine can become vertically to place from transversely putting, need carry out vertical detection time measuring when the patient, through above operation, can make equipment convert vertical CT fast into, this makes the hospital only need purchase an equipment alright realize vertical and horizontal dual detection.

1. The invention can effectively avoid the discomfort and fear caused by the displacement of the human body in the process of lying flat and can cause the heartbeat acceleration to influence the normal detection by replacing the traditional detection that the human body is displaced and close to the CT machine on the lying platform by the detection that the CT machine is displaced and close to the human body, and can also avoid the situations that the human body falls off from the lying platform to cause the human body damage and the equipment damage in the process of moving the human body.

2. The invention can rotate the screw rod by the operation of the second motor, and the lifting seat is internally provided with a thread meshed with the screw rod, so that when the screw rod rotates, can drive the lifting seat to move up and down on the outer side of the lifting seat, can drive the bearing seat and the butt joint plate to move together in the process of moving the lifting seat, can ensure that the butt joint plate does not rotate together with the lifting seat through the connection of the bearing seat, when the butt joint plate moves up and down, the CT machine can be driven to move together, so that when the CT machine detects a patient, the distance between the CT machine and the patient can be adjusted according to the stature and the lying posture of the patient, so that the CT machine can be close to the human body as much as possible to improve the detection precision, can move away after being in contact with the human body to avoid collision with the limbs of the patient in the displacement process, this makes the use of equipment nimble activated, also can avoid simultaneously with the human contact striking to cause equipment damage or human damage.

3. The radiation protection plate is made of toughened glass mixed with lead powder, so that the radiation protection plate has a good radiation protection effect and certain visibility, a patient can observe a detection flow by standing at the outer end of the radiation protection plate in the detection process, radiation injury received by the doctor in a radiology department for a long time can be greatly reduced by protection of the radiation protection plate, in addition, the radiation protection plate is fixed at the upper end and the lower end of the linear motor, so that the radiation protection plate and the linear motor have good integrity, the fear of the patient due to the existence of the partition plate can be reduced, the radiation protection plate can effectively separate the CT machine from the outside, and the probability of contact damage of the CT machine and the outside can be reduced.

4. When the CT machine is not used, the camera can continuously perform work, when a non-medical worker approaches the CT machine, the camera can immediately capture the non-medical worker and shoot the non-medical worker, if the non-medical worker continues to approach the CT machine, the camera can activate the linear motor, the CT machine can be driven to displace and be far away from the non-medical worker through the work of the linear motor, meanwhile, the device can give out an alarm to remind the worker to check the situation in the front, the danger caused by radioactive substance leakage due to the fact that the non-medical worker approaches the touch device can be avoided, in addition, the camera can assist the displacement assembly to perform positioning in the working process of the CT machine, and the displacement precision of the displacement assembly can be improved.

5. After the lying platform is moved away from the inner side of the CT machine, the linear motor and the fixed seat can be disconnected by unscrewing the fixing bolt between the linear motor and the fixed seat, at the moment, the first motor at the outer end of the support table works, and the rotating shaft can drive the linear motor to rotate, so that the linear motor can be converted from horizontal placement to longitudinal placement, and the linear motor can drive the sliding seat, the displacement assembly and the CT machine to rotate together in the rotating process, so that the CT machine can be converted from horizontal placement to longitudinal placement.

Drawings

FIG. 1 is a schematic diagram of an overall front view of a safe and efficient radiological imaging examination apparatus;

FIG. 2 is a schematic side view of a safe and efficient radiological imaging examination apparatus according to the present invention;

FIG. 3 is a schematic diagram of a displacement assembly of a safe and efficient stereoscopic radiographic examination apparatus according to the present invention;

FIG. 4 is a schematic structural diagram of a bearing seat of a safe and efficient radiological three-dimensional imaging examination apparatus according to the present invention;

FIG. 5 is an enlarged schematic view of the safety and high efficiency radiographic three-dimensional imaging examination apparatus shown in FIG. 1 at A;

FIG. 6 is a schematic view of a radiation protection assembly of a safe and efficient radiological imaging examination apparatus according to the present invention;

fig. 7 is a schematic view of a vertical arrangement structure of a safe and efficient radiological stereoscopic imaging examination apparatus according to the present invention.

In the figure: 1. a support table; 2. a first motor; 3. a rotating shaft; 4. a linear motor; 5. a sliding seat; 6. a displacement table; 7. a displacement assembly; 701. a second motor; 702. a lead screw; 703. a lifting seat; 704. a bearing seat; 705. a butt plate; 8. a CT machine; 9. a camera; 10. a fixed seat; 11. a radiation protection component; 1101. placing a seat; 1102. a concave groove; 1103. a radiation-proof plate; 12. a lying platform.

Detailed Description

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides a safe efficient three-dimensional formation of image inspection equipment of radiology department, including brace table 1, linear electric motor 4 and CT machine 8, the outer end of brace table 1 is connected with first motor 2, and the inboard of brace table 1 is provided with axis of rotation 3, linear electric motor 4 settles in the outer end of axis of rotation 3, and linear electric motor 4's inboard is connected with the seat 5 that slides, the outer end of the seat 5 that slides is connected with displacement platform 6, and displacement platform 6's inboard is provided with displacement assembly 7, CT machine 8 settles in the outer end of displacement assembly 7, and CT machine 8's outside both sides are connected with camera 9, linear electric motor 4's terminal arrangement has fixing base 10, and linear electric motor 4's outside both sides are connected with radiation protection subassembly 11, CT machine 8's inboard is provided with flat platform 12 of lying.

Referring to fig. 1-4, the linear motor 4 is slidably connected to the sliding seat 5, the sliding seat 5 is fixedly connected to the displacement table 6 through bolts, the displacement assembly 7 includes a second motor 701, a lead screw 702, a lifting seat 703, a bearing seat 704 and a butt plate 705, the lead screw 702 is connected to the outer side of the bottom of the second motor 701, the lifting seat 703 is disposed at the outer end of the lead screw 702, the bearing seat 704 is connected to the outer end of the lifting seat 703, the butt plate 705 is disposed at the outer end of the bearing seat 704, the lead screw 702 is in threaded connection with the lifting seat 703, the lifting seat 703 is in socket connection with the bearing seat 704, the butt plate 705 is in welded connection with the bearing seat 704, and the butt plate 705 is attached to the outer surface of the CT machine 8;

the specific operation is as follows, after a patient lies on the top of the lying platform 12, the linear motor 4 works to drive the sliding seat 5 to displace, the sliding seat 5 can drive the displacement platform 6 and the displacement assembly 7 to move together in the displacement process, so that the CT machine 8 can displace towards the direction of the patient, the detector in the CT machine 8 works to scan the section of a certain body part of the human body, thereby judging whether the body organ of the patient is damaged, the CT machine 8 can displace close to the human body to replace the traditional detection that the human body displaces on the lying platform 12 to close to the CT machine 8, the phenomenon that the human body displaces in the lying process to generate discomfort and fear, which causes heartbeat acceleration to influence normal detection, and the phenomenon that the human body falls from the lying platform 12 to cause human body damage and equipment damage in the human body moving process can be avoided, in addition, the displacement device and the CT machine 8 can be integrated, when the CT machine 8 detects that a certain position of a human body is abnormal or the detection result is poor, a signal for stopping displacement can be quickly transmitted to the linear motor 4, so that the CT machine 8 can be accurately suspended to carry out detailed detection on the human body at a specified position, the control effect of the equipment can be improved, in addition, in the detection process, the second motor 701 works to enable the lead screw 702 to rotate, the lifting seat 703 is internally provided with a thread meshed with the lead screw 702, so that when the lead screw 702 rotates, the lifting seat 703 can be driven to carry out up-and-down displacement on the outer side of the lifting seat 703, in the displacement process of the lifting seat 703, the bearing seat 704 and the butt plate 705 can be driven to carry out the simultaneous displacement, through the connection of the bearing seat 704, the butt plate 705 can be ensured not to rotate together with the lifting seat 703, and in the process of carrying out the up-and-down displacement on the butt plate 705, can drive CT machine 8 and carry out the displacement together, this makes CT machine 8 adjust the distance between self and the patient according to patient's stature and the appearance of lying, this makes CT machine 8 can be close to the human body as far as possible and promotes when detecting the precision, can avoid the displacement in-process to bump with patient's limbs after coming to contact with the human body, this makes the use of equipment can nimble activation, also can avoid simultaneously causing equipment damage or human damage with human contact striking.

Referring to fig. 1, 5 and 6, the radiation protection assembly 11 includes a placing base 1101, a concave groove 1102 and a radiation protection plate 1103, the concave groove 1102 is formed in the inner side of the placing base 1101, the radiation protection plate 1103 is connected to the inner side of the concave groove 1102, the size and shape of the concave groove 1102 are consistent with the inner size and shape of the radiation protection plate 1103, the radiation protection plate 1103 and the linear motor 4 are vertically distributed, the radiation protection plate 1103 is connected with the placing base 1101 in a clamping manner, and the radiation protection plate 1103 is uniformly arranged at the upper end and the lower end of the linear motor 4;

the specific operation is as follows, before the CT machine 8 detects, a worker can insert the radiation-proof plate 1103 in the placing seats 1101 on the upper and lower sides of the linear motor 4, the size and shape of the top end of the radiation-proof plate 1103 are consistent with the size and shape of the concave groove 1102 on the inner side of the placing seats 1101, so that the radiation-proof plate 1103 can be stably fixed with the linear motor 4, the radiation-proof plate 1103 is made of toughened glass mixed with lead powder, so that the radiation-proof plate 1103 has good radiation-proof effect and certain visibility, during the detection process of a patient, the doctor can stand at the outer end of the radiation-proof plate 1103 to observe the detection flow, through the protection of the radiation-proof plate 1103, the radiation injury received by the doctor in the radiology department for a long time can be greatly reduced, in addition, the radiation-proof plate 1103 is fixed on the upper and lower ends of the linear motor 4, so that the radiation-proof plate 1103 and the linear motor 4 have good integrity, this can reduce the patient because of there being the fear that the baffle appears to the radiation protection board 1103 can be effectual separates CT machine 8 with the external world, and this can reduce CT machine 8 and external probability of contact damage.

Referring to fig. 1, 2 and 7, the first motor 2 is rotatably connected with the linear motor 4 through the rotating shaft 3, the first motor 2 is fixedly connected with the support table 1, the cameras 9 are symmetrically distributed along the vertical center line of the CT machine 8, and the cameras 9 are arranged at both ends of the CT machine 8;

the operation is as follows, when the CT machine 8 is stopped, the camera 9 can continuously carry out work, when a non-medical person approaches the CT machine 8, the camera 9 can immediately catch the non-medical person and shoot the non-medical person, if the non-medical person continues to approach the CT machine 8, the camera 9 can activate the linear motor 4, the CT machine 8 can be driven to move and be far away from the non-medical person through the work of the linear motor 4, meanwhile, the device can send out an alarm to remind the working person to check the situation, which can avoid the danger caused by the radioactive substance leakage because the non-medical person approaches the touch device, in addition, the camera 9 can assist the displacement assembly 7 to carry out positioning in the working process of the CT machine 8, which can improve the displacement precision of the displacement assembly 7, after the lying platform 12 is moved away from the inner side of the CT machine 8, the engagement between the linear motor 4 and the fixed seat 10 can be released by unscrewing the fixed bolt between the linear motor 4 and the fixed seat 10, the first motor 2 of supporting bench 1 outer end carries out work this moment, enable axis of rotation 3 to drive linear electric motor 4 and rotate, this makes linear electric motor 4 can change into vertically placing from transversely placing, and linear electric motor 4 is at the in-process of rotation, can drive sliding seat 5, displacement subassembly 7 and CT machine 8 are together rotatory, this makes CT machine 8 can become vertically placing from transversely putting, when the patient need carry out vertical detection, through above operation, can make equipment convert vertical CT into fast, this makes the hospital only need purchase an equipment alright realize vertical and horizontal dual detection, this can be very big reduction CT machine 8's the cost of buying, this use flexibility that also makes equipment simultaneously obtains promoting.

In conclusion, when the safe and efficient radiology department three-dimensional imaging examination device is used, firstly, before the CT machine 8 performs detection, a worker can insert the radiation-proof plates 1103 into the arrangement seats 1101 on the upper and lower sides of the linear motor 4, the size and the shape of the top ends of the radiation-proof plates 1103 are consistent with the size and the shape of the concave grooves 1102 on the inner sides of the arrangement seats 1101, so that the radiation-proof plates 1103 can be stably fixed with the linear motor 4, the radiation-proof plates 1103 are made of toughened glass mixed with lead powder, so that the radiation-proof plates 1103 can have good radiation-proof effect and certain visibility, when a patient performs detection, a doctor can stand at the outer ends of the radiation-proof plates 1103 to observe a detection flow, radiation injury received by the doctor in the radiology department for a long time can be greatly reduced through the protection of the radiation-proof plates 1103, in addition, the radiation-proof plates 1103 are fixed at the upper and lower ends of the linear motor 4, the radiation protection plate 1103 has better integrity with the linear motor 4, so that the fear of a patient caused by the existence of a partition plate can be reduced, and the radiation protection plate 1103 can effectively separate the CT machine 8 from the outside, so that the probability of contact damage of the CT machine 8 with the outside can be reduced;

then, after lying on the top of the lying table 12, the patient works through the linear motor 4 to drive the sliding seat 5 to move, and during the moving process of the sliding seat 5, the displacement table 6 and the displacement assembly 7 can be driven to move together, which enables the CT machine 8 to be displaced towards the patient, the detector in the CT machine 8 works to scan the section of a certain body part of the human body, thereby judging whether the organs of the patient body have any chives, replacing the traditional detection that the human body is displaced and close to the CT machine 8 on the lying platform 12 by the detection that the CT machine 8 is displaced and close to the human body, effectively avoiding the discomfort and fear caused by the displacement of the human body in the lying process and the influence of heartbeat acceleration on normal detection, meanwhile, the situations of human body injury and equipment damage caused by falling of the human body from the lying platform 12 in the process of moving the human body can be avoided, and in addition, the displacement device and the CT machine 8 can be integrated into a whole;

then, when the CT machine 8 detects that a certain position of the human body is abnormal or the detection result is poor, the signal of stopping displacement can be quickly transmitted to the linear motor 4, so that the CT machine 8 can be accurately paused to carry out detailed detection on the human body at the specified position, and the control effect of the equipment can be improved;

then, in the detection process, the second motor 701 works to enable the screw rod 702 to rotate, the lifting seat 703 is internally provided with a thread meshed with the screw rod 702, so that when the screw rod 702 rotates, the lifting seat 703 can be driven to move up and down on the outer side of the lifting seat 703, and when the lifting seat 703 moves, the bearing seat 704 and the butt plate 705 can be driven to move together, and through the connection of the bearing seat 704, the butt plate 705 can be ensured not to rotate together with the lifting seat 703, and when the butt plate 705 moves up and down, the CT machine 8 can be driven to move together, so that the distance between the CT machine 8 and a patient can be adjusted according to the body and the lying posture of the patient in the detection process of the patient, so that the CT machine 8 can be close to the human body as much as possible to improve the detection precision, and can be separated from the human body to avoid the collision with the limb of the patient in the displacement process, the use of the equipment can be activated, and meanwhile, the equipment damage or the human body damage caused by the contact and the impact with the human body can be avoided;

then, when the CT machine 8 is stopped, the camera 9 can continuously perform work, when a non-medical worker approaches the CT machine 8, the non-medical worker can be immediately captured by the camera 9 and shot, if the non-medical worker continues to approach the CT machine 8, the camera 9 can activate the linear motor 4, the non-medical worker can be driven to move and be far away from the non-medical worker through the work of the linear motor 4, meanwhile, the device can send out an alarm to remind the worker of checking the situation in the front, the situation that the non-medical worker approaches the touch device to cause radioactive substance leakage to cause danger can be avoided, in addition, the camera 9 can assist the displacement assembly 7 to perform positioning in the working process of the CT machine 8, and the displacement precision of the displacement assembly 7 can be improved;

finally, after the lying platform 12 is moved away from the inner side of the CT machine 8, by loosening the fixing bolt between the linear motor 4 and the fixing seat 10, the linear motor 4 can be disengaged from the fixed seat 10, at the moment, the first motor 2 at the outer end of the support table 1 works, the rotating shaft 3 can drive the linear motor 4 to rotate, so that the linear motor 4 can be converted from horizontal placement to longitudinal placement, while the linear motor 4 can drive the sliding seat 5, the displacement component 7 and the CT machine 8 to rotate together in the rotating process, this enables the CT machine 8 to be placed from the horizontal position to the vertical position, and when a patient needs to be vertically tested, through the above operations, can quickly convert the equipment into vertical CT, which can realize vertical and horizontal double detection by only purchasing one equipment in a hospital, this can greatly reduce the purchase cost of the CT machine 8, and at the same time, it can improve the flexibility of the use of the apparatus.

Claims (10)

1. The safe and efficient radiology three-dimensional imaging examination equipment is characterized by comprising a support table (1), a linear motor (4) and a CT (computed tomography) machine (8), wherein the outer end of the support table (1) is connected with a first motor (2), a rotating shaft (3) is arranged on the inner side of the support table (1), the linear motor (4) is arranged at the outer end of the rotating shaft (3), a sliding seat (5) is connected with the inner side of the linear motor (4), the outer end of the sliding seat (5) is connected with a displacement table (6), a displacement assembly (7) is arranged on the inner side of the displacement table (6), the CT machine (8) is arranged at the outer end of the displacement assembly (7), cameras (9) are connected to two outer sides of the CT machine (8), a fixed seat (10) is arranged at the tail end of the linear motor (4), and radiation protection assemblies (11) are connected to two outer sides of the linear motor (4), the inner side of the CT machine (8) is provided with a lying platform (12).

2. A safe and efficient radiology stereoscopic imaging examination apparatus according to claim 1, wherein the first motor (2) is rotatably connected to the linear motor (4) through a rotating shaft (3), and the first motor (2) is fixedly connected to the support table (1).

3. A safe and efficient radiology stereoscopic imaging examination device according to claim 1, wherein the linear motor (4) is slidably connected with the sliding seat (5), and the sliding seat (5) is fixedly connected with the displacement table (6) through bolts.

4. The safe and efficient radiology stereoscopic imaging examination device according to claim 1, wherein the displacement assembly (7) comprises a second motor (701), a lead screw (702), a lifting seat (703), a bearing seat (704) and a butt plate (705), the lead screw (702) is connected to the outer side of the bottom of the second motor (701), the lifting seat (703) is arranged at the outer end of the lead screw (702), the bearing seat (704) is connected to the outer end of the lifting seat (703), and the butt plate (705) is arranged at the outer end of the bearing seat (704).

5. A safe and efficient radiology stereoscopic imaging examination device according to claim 4, wherein the lead screw (702) is in threaded connection with the lifting base (703), and the lifting base (703) is in socket connection with the bearing base (704).

6. A safe and efficient radiology stereoscopic imaging examination device according to claim 4, wherein the docking plate (705) and the bearing seat (704) are in welded connection, and the docking plate (705) is attached to the outer surface of the CT machine (8).

7. A safe and efficient radiology stereoscopic imaging examination apparatus according to claim 1, wherein the cameras (9) are symmetrically distributed along a vertical center line of the CT machine (8), and the cameras (9) are arranged at two ends of the CT machine (8).

8. The safe and efficient stereoscopic imaging and inspection equipment for the radiology department according to claim 1 is characterized in that the radiation protection assembly (11) comprises a placing seat (1101), a concave groove (1102) and a radiation protection plate (1103), the concave groove (1102) is formed in the placing seat (1101), and the radiation protection plate (1103) is connected to the inner side of the concave groove (1102).

9. A safe and efficient radiology stereoscopic imaging examination device according to claim 8, wherein the size and shape of the concave groove (1102) are consistent with the inner size and shape of the radiation protection plate (1103), and the radiation protection plate (1103) is vertically distributed with the linear motor (4).

10. A safe and efficient radiology stereoscopic imaging examination device according to claim 8, wherein the radiation protection plate (1103) is connected with the setting seat (1101) in a clamping manner, and the radiation protection plate (1103) is uniformly arranged at the upper end and the lower end of the linear motor (4).

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