CN113180714A - Multi-mode imaging equipment host - Google Patents
Multi-mode imaging equipment host Download PDFInfo
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- CN113180714A CN113180714A CN202110432020.6A CN202110432020A CN113180714A CN 113180714 A CN113180714 A CN 113180714A CN 202110432020 A CN202110432020 A CN 202110432020A CN 113180714 A CN113180714 A CN 113180714A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 31
- 230000002441 reversible effect Effects 0.000 claims abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 101
- 230000004927 fusion Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 7
- 230000007306 turnover Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/02—Adjustable operating tables; Controls therefor
Abstract
A multimode imaging device host comprises a host and a scanning bed, wherein the host comprises a first scanning area and a second scanning area; the first scanning area and the second scanning area are coaxially arranged in the front-back direction, the scanning bed is coaxially arranged with the first scanning area and the second scanning area, and the host is of a reversible structure so as to realize position switching of the scanning bed corresponding to the first scanning area or the scanning bed corresponding to the second scanning area; 2) the movement stroke is small, the bed plate is short, and the deformation of the bed plate is small; 3) the host machine rotary motion replaces the axial horizontal motion test scanning area switching, the space is multiplexed, and the axial size is shortened; 4) axial positions of two scanning areas of the host are designed to be absolutely zero under the condition that the axial positions are consistent before and after rotation and the relative deformation of a bed plate influencing the image fusion precision; 5) the host can be matched with any conventional scanning bed, and has high design flexibility and strong modularization.
Description
Technical Field
The invention relates to a host of multi-mode imaging equipment, belonging to medical imaging equipment.
Background
The basis of the imaging of the multimode imaging device in the market at present is that two imaging devices are arranged axially on a scanning axis, and the imaging area of the two imaging devices has a distance in the axial direction, and the distance has a great influence on the image fusion precision of the multimode imaging.
In order to solve the problems generated in the arrangement design of the host, most of the existing products are controlled in the design of the scanning bed, the host is fixed, the risk avoidance is realized, different deformation of the bed plate in different imaging areas caused by the axial distance of the imaging areas is reduced as much as possible when a scanned person is conveyed for scanning, and the relative position of the same position of a human body in the imaging areas is prevented from generating larger change, so that the image fusion is failed, and the risk is generated.
The current solutions in the market for image fusion accuracy are mostly focused on the design of the scanning bed, as shown in fig. 1:
1) the bottom of the scanning bed is fixed, the horizontal motion is single-axis linear motion, and a large cantilever of a bed board (as shown in figure 1-1);
2) a biaxial movement divided into an upper part and a lower part (as shown in figures 1-2);
3) a single upper part of the biaxial motion (as in figures 1-3);
4) the scanning bed is stationary and the main machine is moved horizontally over a wide range (as in fig. 1-4), and this solution is hardly used in the market.
The main stream scanning bed solution is realized by changing the phase and increasing the linear motion stroke in the scanning bed-entering direction. The prior relevant technical patents for the above design scheme are as follows:
scheme 1: the base removes scheme, and patent number is US 6885165.
The scanning bed entering movement and the vision field switching movement of the scheme are completed through a set of parallel movement mechanisms of the base, the movement mode is linear movement, and the specific structure is shown in figure 2.
The linear motion of the bottom of the scheme is to make the upper structure reciprocate on the bottom support guide rail by the driving of the linear motor, so as to realize the scanning motion and the visual field switching motion.
Scheme 2: double-layer movable scheme, with patent number US 7292673.
The structure of the vision field switching movement of the scheme is independently arranged on the bottom layer, and the scanning bed entering movement of the upper layer move in two areas respectively, so that respective functions are realized.
The bottom layer view switching movement is also linear movement which is completed by linear driving, and the structure of the specific scheme is shown in figure 3.
Scheme 3: the proposal of the double-layer bed board is a patent number US 6754520.
This solution also divides the field of view switching motion and the scanning bed entering motion into two independent motion parts, except that the two parts are all arranged in an upper structure and the switching motion structure is arranged below the scanning bed entering motion structure. The two sets of motion systems respectively have own driving structures, and the vision switching motion is also linear motion completed by linear driving. And the lower layer bed plate is contacted with the supporting point with the synchronous height in the middle of the machine frame after completing the vision switching movement to complete the auxiliary support, so that the supporting state of the bed plate is ensured to be unchanged, the difference of deformation caused by bending moment additionally generated due to the lengthening of the force arm is not introduced, and the specific structure is shown in figures 4 and 5.
The disadvantages of scheme 1 are as follows:
1) the bed plate of the scheme is of a structure that a large cantilever is supported at the tail part, so that the deformation of the bed plate in the visual field is large, and the image quality is directly influenced;
2) because the scanning feeding motion and the vision switching motion are realized through the motion structure of the base, the motion stroke of the bottom is increased, the structural arrangement cannot be optimized, the overall length of the bed body is too long, and the controllability of the motion precision and the reliability is reduced. .
The disadvantages of scheme 2 are as follows:
1) one imaging device scans a field of view that approximates a plane, while the other imaging device scans a plane that is a region having a certain axial length. In addition, because the supporting mode of the bed plate is two-point support with one end moving and the other end fixed, the deformation of the bed plate is changed along with the difference of the extension of the bed plate. The two factors cause that the deformation of the bed board in the visual fields of the two image devices has obvious difference, and the image fusion precision is influenced;
2) although the scanning feeding motion and the vision switching motion are respectively realized by dividing the scanning feeding motion and the vision switching motion into two parts, the structural width of the upper scanning feeding motion is much larger than that of the bed plate, so that the partial structure can not enter the central cylinder, the bed body is inevitably moved backwards, avoided and interfered integrally, the motion stroke is increased, the size of the bed body is increased, and the controllability of the motion precision and the reliability is reduced.
1) because the scanning bed entering movement and the vision field switching movement are linear movements completed by linear driving, the movement strokes of the two movements cannot be overlapped and only can be directly and linearly overlapped. The structure size is increased, the design difficulty is increased, and various costs are increased;
2) due to the fact that the movement stroke and the structure size are enlarged, the cantilever amount of the bed plate is enlarged, the deformation amount of the bed plate under the same load is increased, and image quality is affected.
The disadvantages of scheme 3 are as follows:
1) although the solution can compress the structure size, an auxiliary supporting point is required to be added in the middle of the machine frame, and the supporting point must be consistent with the height of the scanning bed main body, which inevitably causes the whole cost to be greatly increased.
2) And because this scheme must reserve the structural space of the auxiliary stay point in two visual fields interval, increased the axial distance of two visual fields area intangibly, the axial dimension that increases is about more than 50%. The axial distance is increased to control the relative deformation difference of the bed plates in the two vision fields to be negative;
3) because the auxiliary supporting points guarantee the consistency of the supporting height through multi-axis synchronous lifting, because the auxiliary supporting points are not on the basis of one device, a unified reference does not exist, a size chain cannot be controlled, the height consistency is difficult to guarantee, the relative deformation difference of the bed plate can be directly introduced, and the image fusion is seriously influenced. And the scanning person will feel bad when the scanning person touches the auxiliary supporting point after the bed board is deformed.
All the existing solutions are risk control on the scanning bed, but as long as the control is carried out on the scanning bed, the axial movement stroke is inevitably large, which is an unsolved matter. The motion stroke increases and then leads to the structure size grow, and occupation of land space grow, and the cost uprises, and more importantly the deflection grow of bed board, and the difficult deformation of guaranteeing two scanning area intra-area bed boards on arbitrary one point simultaneously is unanimous completely, leads to image fusion precision to worsen, influences image quality.
Disclosure of Invention
The purpose of the invention is as follows:
the invention relates to a multi-mode imaging device host, and aims to provide a novel host arrangement and motion mode to solve the problems of inaccurate deformation control, poor image fusion precision and influence on image quality caused by the fact that the relative deformation of a bed plate is controlled only by aiming at the design of a scanning bed in the prior art.
The technical scheme is as follows:
a multimode imaging device host computer, including host computer A and scanning bed 3, host computer A includes the first scanning area 2 and second scanning area 6; the first scanning area 2 and the second scanning area 6 are coaxially arranged in the front-back direction, the scanning bed 3 is coaxially arranged with the first scanning area 2 and the second scanning area 6, and the host A is of a reversible structure so as to realize the position switching of the scanning bed 3 corresponding to the first scanning area 2 or the scanning bed 3 corresponding to the second scanning area 6.
The main machine A is arranged on the base 7, two rotating shafts 4 are respectively arranged on two sides of the main machine, the two rotating shafts 4 are coaxial, the rotating shafts 4 are arranged on the support 11 through bearings, and the support 11 is arranged on the base 7.
At least one rotating shaft 4 on one side is connected with a control overturning motor 12 for controlling the overturning of the main machine A.
The control overturning motor 12 is connected with the revolving shaft 4 through a speed reducer.
The base 7 and the scanning bed 3 can move close to and away from each other.
The base 7 is a movable base, the base 7 is arranged on the fixed base 8, and the base 7 can move relative to the fixed base 8.
The bottom of the scanning bed 3 is arranged on the bed base 3-1, and the scanning bed 3 is a structure which can move relative to the bed base 3-1 as a whole.
The side of the main machine A is provided with a drag chain 9 for bearing the cable of the main machine A or a wire groove for accommodating the cable.
The advantages and effects are as follows:
all the existing schemes increase the motion stroke of the scanning bed and simultaneously reduce the relative deformation of the bed plate as much as possible, but some important performance indexes are sacrificed, and the relative deformation of the bed plate cannot be really zero. Under the condition that the axial movement stroke of the scanning bed is not increased (only the requirement of single scanning imaging length is met), the main machine is turned over by 180 degrees forwards and backwards, so that the two imaging areas are close to the scanning bed when working respectively, namely the scanning bed finishes two times of single scanning completely and repeatedly. The concrete advantages are as follows:
1) the stroke of the scanning bed is greatly shortened, the structure size is reduced, the structure is simple, and the occupied space is small;
2) the movement stroke is small, the bed plate is short, and the deformation of the bed plate is small;
3) the host machine rotary motion replaces the axial horizontal motion test scanning area switching, the space is multiplexed, and the axial size is shortened;
4) the axial positions of two scanning areas of the host are designed to be kept consistent before and after rotation (the technology is easy to achieve), and the relative deformation of a bed plate influencing the image fusion precision is absolutely zero;
5) the host can be matched with any conventional scanning bed, and has high design flexibility and strong modularization.
Drawings
FIG. 1 is a schematic overview of the background art;
FIG. 2 is a schematic diagram of one form of background art;
FIG. 3 is a schematic diagram of yet another form of the prior art;
FIG. 4 is a schematic diagram of yet another form of the prior art;
FIG. 5 is a partial schematic view of FIG. 4;
FIG. 6 is a perspective view of the structure of the present application;
FIG. 7 is a side view of the structure of the present application;
FIG. 8 is a schematic diagram of the present application after switching states;
FIG. 9 is a schematic view of the present application illustrating a slewing state;
FIG. 10 is a schematic view of a rotary avoidance state of the present application;
FIG. 11 is a schematic view of cable movement;
FIG. 12 is a block diagram of a host computer of the present application;
FIG. 13 is a side view of the host;
FIG. 14 is a top view of one form of the movable arrangement of the base and the stationary base;
FIG. 15 is a side view of one form of the base movably disposed with the stationary base;
FIG. 16 is a top view of a second version of the base movably disposed with respect to the stationary base;
FIG. 17 is a side view of a second form of the base movably disposed with respect to the stationary base;
FIG. 18 is a top view of a third form of the movable arrangement of the base and stationary base;
FIG. 19 is a side view of a third form of the base movably disposed with respect to the stationary base;
FIG. 20 is a top view of a fourth form of the base movably disposed with respect to the stationary base;
FIG. 21 is a side view of a fourth form of the base movably disposed with respect to the stationary base;
FIG. 22 is a top view of a fifth form of the movable arrangement of the base and stationary base;
FIG. 23 is a side view of a fifth form of the base movably disposed with respect to the stationary base;
FIG. 24 is a top view of one form of the scanning bed in cooperation with the bed base;
FIG. 25 is a side view of one form of the scanning bed mated with the bed base;
FIG. 26 is a top view of the second form of the scanning bed in cooperation with the bed base;
FIG. 27 is a side view of a second version of the scanning bed in cooperation with a bed base;
FIG. 28 is a top view of a third form of the scanning bed in cooperation with a bed base;
FIG. 29 is a side view of a third version of the scanning bed in cooperation with a bed base;
FIG. 30 is a top view of a fourth version of the scanning bed mated with the bed base;
FIG. 31 is a side view of a fourth version of the scanning bed in cooperation with a bed base;
FIG. 32 is a top view of a fifth alternative form of the scanning bed in cooperation with a bed base;
fig. 33 is a side view of a fifth version of the scanning bed in cooperation with a bed base.
Detailed Description
A multimode imaging device host computer, including host computer A and scanning bed 3, host computer A includes the first scanning area 2 and second scanning area 6; the first scanning area 2 and the second scanning area 6 are coaxially arranged in the front-back direction (i.e. the direction of arrow B in fig. 6), the scanning bed 3 is coaxially arranged with the first scanning area 2 and the second scanning area 6, and the host a is of a structure capable of being turned over integrally (i.e. the first scanning area 2 and the second scanning area 6 are connected into a whole and can be turned over integrally) so as to realize the position switching of the scanning bed 3 corresponding to the first scanning area 2 or the scanning bed 3 corresponding to the second scanning area 6.
Further, the main machine A is arranged on the base 7, two rotating shafts 4 are respectively arranged on two sides of the main machine, the two rotating shafts 4 are coaxial, the rotating shafts 4 are arranged on the support 11 through bearings, and the support 11 is arranged on the base 7.
Further, at least one of the rotating shafts 4 is connected with a control turnover motor 12 for controlling the turnover of the main machine a (meaning that at least one of the rotating shafts is provided with a motor for controlling turnover).
Further, the control turnover motor 12 is connected with the rotating shaft 4 through a speed reducer.
Further, the base 7 and the scanning bed 3 may be arranged to move toward and away from each other.
Further, base 7 is movable base, and base 7 sets up on unable adjustment base 8, and base 7 can remove for unable adjustment base 8.
The base 7 can be moved relative to the fixed base 8 in several ways:
example 1: as shown in fig. 14 and 15, a movable slideway 8-1 is arranged on the fixed base 8, the base 7 is arranged on the movable slideway 8-1 and can move on the movable slideway 8-1, generally speaking, a base cross beam 7-1 can be arranged at the bottom of the base 7, a roller 7-2 is arranged at the bottom of the base cross beam 7-1, and the roller 7-2 is positioned in the concave movable slideway 8-1 (or the movable slideway 8-1 is protruded out of the fixed base 8, and the roller 7-2 is arranged on the movable slideway 8-1, similar to the matching relationship between train wheels and train tracks); the front end of the hydraulic cylinder 13 is connected with the bottom of the main machine A (which can be connected with the base beam 7-1), the rear end of the hydraulic cylinder 13 is fixedly connected with the fixed base 8 (as shown in figure 15), and the base 7 is controlled to move relative to the fixed base 8 through the extension and retraction of the hydraulic cylinder 13;
example 2:
as shown in fig. 16 and 17, the fixed base 8 is provided with a movable sliding rail 8-1, and the base 7 is arranged on the concave movable sliding rail 8-1 and can move on the movable sliding rail 8-1; generally, a base cross beam 7-1 can be arranged at the bottom of the base 7, rollers 7-2 are arranged at the bottom of the base cross beam 7-1, the rollers 7-2 are positioned in a movable slide rail 8-1 (or the movable slide rail 8-1 protrudes out of a fixed base 8, the rollers 7-2 are arranged on the movable slide rail 8-1, similar to the matching relationship between train wheels and train tracks), a motor 14 for controlling movement is arranged on the fixed base 8, the motor 14 (speed reducer) for controlling movement is connected with a lead screw 14-1, the lead screw 14-1 is in threaded fit with a fixed screw 14-2 at the bottom of a host A, and the movement of the base 7 is controlled by controlling the rotation of the motor 14 for moving;
example 3:
referring to fig. 18 and 19, a movable slide rail 8-1 is arranged on a fixed base 8, and a base 7 is arranged on the movable slide rail 8-1 and can move on the movable slide rail 8-1; generally, a base cross beam 7-1 is arranged at the bottom of a base 7, rollers 7-2 are arranged at the bottom of the base cross beam 7-1, the rollers 7-2 are located in a recessed movable sliding rail 8-1 (or the movable sliding rail 8-1 protrudes out of a fixed base 8, the rollers 7-2 are arranged on the movable sliding rail 8-1, similar to the matching relationship between train wheels and train tracks), a driving motor 14 is arranged at one end of the fixed base 8, a driving gear 14-3 is arranged at the output end of the driving motor 14, the driving gear 14-3 is meshed with a rack 15 connected to the bottom of a host A, the rack 15 is pulled through the rotation of the driving gear 14-3, and then the base 7 is pulled to move (two ends of the rack 15 can be connected to the base cross beam 7-1;
example 4:
as shown in fig. 20-23, the fixed base 8 is provided with a movable slide rail 8-1, and the base 7 is arranged on the movable slide rail 8-1 and can move on the movable slide rail 8-1; generally speaking, a base cross beam 7-1 is arranged at the bottom of the base 7, a roller 7-2 is arranged at the bottom of the base cross beam 7-1, the roller 7-2 is located in a concave moving slide rail 8-1 (or the moving slide rail 8-1 protrudes out of the fixed base 8, the roller 7-2 is arranged on the moving slide rail 8-1, similar to the matching relationship between train wheels and train tracks), a driving motor 14 is arranged at two ends of the fixed base 8, a chain gear 14-5 or a belt pulley 14-5 is arranged at the output end of the driving motor 14, a chain 14-6 is wound on the chain gear 14-5, the chain 14-6 is connected with the bottom of the main machine a, a belt 14-7 is wound on the belt pulley 14-5, the belt 14-7 is connected with the bottom of the main machine a, specifically, as compared with fig. 20-23, if the figure is moved to the left, the driving motor 14 at the left side of the figure winds the chain 14-6 or the belt 14-7, and the driving motor 14 at the right side of the figure unwinds the chain 14-6 or the belt 14-7, so that the base 7 moves to the left and operates in the reverse direction when moving to the right.
Of course, other well-known techniques that may be implemented may also be employed.
The bottom of the scanning bed 3 is arranged on the bed base 3-1, and the scanning bed 3 as a whole can move relative to the bed base 3-1 (the movement refers to the whole movement of the bed, and is different from the movement of the scanning bed 3 extending into the main machine A). The scanning bed 3 can be moved relative to the bed base 3-1 in several ways:
scanning bed example 1:
as shown in fig. 24 and 25, a bed moving slide rail 3-1-1 is arranged on a bed base 3-1, the bottom of a scanning bed 3 is arranged on the bed moving slide rail 3-1-1 and can move on the bed moving slide rail 3-1-1 (the bottom of the scanning bed 3 is provided with a roller, the moving slide rail 3-1-1 is a groove or a slide rail protruding from the bed base 3-1, the roller extends into the moving slide rail 3-1-1 of the groove or is positioned on the slide rail protruding from the bed base 3-1, and is similar to the form of matching of a train wheel and a rail when the roller is positioned on the slide rail protruding from the bed base 3-1); the front end of the bed hydraulic cylinder 18 is connected with the bottom of the scanning bed 3, the rear end of the bed hydraulic cylinder 18 is fixedly connected with the bed base 3-1, and the scanning bed 3 is controlled to move relative to the bed base 3-1 through the extension and retraction of the bed hydraulic cylinder 18;
scanning bed example 2: as shown in fig. 26 and 27, a bed moving slide rail 3-1-1 is arranged on the bed base 3-1, the bottom of the scanning bed 3 is arranged on the bed moving slide rail 3-1-1 and can move on the bed moving slide rail 3-1-1 (the bottom of the scanning bed 3 is provided with a roller, the moving slide rail 3-1-1 is a groove or a slide rail protruding out of the bed base 3-1, the roller extends into the moving slide rail 3-1-1 of the groove or is positioned on the slide rail protruding out of the bed base 3-1, and when the roller is positioned on the slide rail protruding out of the bed base 3-1, the form similar to the matching form of the train wheel and the rail is adopted); a motor 16 for controlling the movement of the bed is arranged on the bed base 3-1, the motor 16 for controlling the movement of the bed is connected with a lead screw 16-1, the lead screw 16-1 is in threaded fit with a nut 16-2 at the bottom of the scanning bed 3, and the movement of the scanning bed 3 is controlled by the rotation of the motor 16 for controlling the movement of the bed;
scanning bed example 3: as shown in fig. 28 and 29, a bed moving slide rail 3-1-1 is arranged on the bed base 3-1, the bottom of the scanning bed 3 is arranged on the bed moving slide rail 3-1-1 and can move on the bed moving slide rail 3-1-1 (the bottom of the scanning bed 3 is provided with a roller, the moving slide rail 3-1-1 is a groove or a slide rail protruding from the bed base 3-1, the roller extends into the moving slide rail 3-1-1 of the groove or is positioned on the slide rail protruding from the bed base 3-1, and when the roller is positioned on the slide rail protruding from the bed base 3-1, the form of matching the train wheel with the rail is similar); one end of the bed base 3-1 is provided with a motor 16 for controlling the bed to move, the motor 16 for controlling the bed to move is provided with a driving gear 16-3, the driving gear 16-3 is meshed with a bed rack 17 connected to the bottom of the scanning bed 3, and the bed rack 17 is pulled through the rotation of the driving gear 16-3 so as to pull the scanning bed 3 to move;
scanning bed example 4: as shown in fig. 30 and 31, a bed moving slide rail 3-1-1 is arranged on a bed base 3-1, the bottom of a scanning bed 3 is arranged on the bed moving slide rail 3-1-1 and can move on the bed moving slide rail 3-1-1 (the bottom of the scanning bed 3 is provided with a roller, the moving slide rail 3-1-1 is a groove or a slide rail protruding out of the bed base 3-1, the roller extends into the moving slide rail 3-1-1 of the groove or is positioned on the slide rail protruding out of the bed base 3-1, and when the roller is positioned on the slide rail protruding out of the bed base 3-1, the form of matching the train wheel with the rail is similar to that of matching the train wheel with the rail); the two ends of the bed base 3-1 are provided with motors 16 for controlling the bed to move, the output end of the motor 16 for controlling the bed to move is provided with a chain gear 16-5 or a belt pulley 16-5, the chain gear 16-5 is wound with a chain 16-6, the chain 16-6 is connected with the bottom of the scanning bed 3, the belt 16-5 is wound with a belt 16-7, and the belt 16-7 is connected with the bottom of the scanning bed 3, when the scanning bed 3 needs to be moved rightwards by taking the figure 30 as a reference in use, the motor 16 on the right side is controlled to rotate the wound chain 16-6 or the belt 16-7, meanwhile, the motor 16 on the left side releases the chain 16-6 or the belt 16-7, so that the chain 16-6 or the belt 16-7 pulls the scanning bed 3 to move rightwards, and the operation can be reversed when the scanning bed moves leftwards, in a word, the motor 16 at the two ends is controlled to lead the chain 16-6 or the belt 16-7 to be folded and unfolded, thereby completing the traction movement of the scanning bed 3.
Of course, the movement of the scanning bed 3 can be realized by any other known technique.
In addition, a drag chain 9 for supporting the cable of the main machine a or a wire groove (such as a flexible wire sheath) for accommodating the cable is arranged on the side surface of the main machine a.
The principles and operation of the present invention will be described in further detail below with reference to the accompanying drawings:
the invention designs a multi-mode imaging medical equipment host scheme capable of rotating back and forth, wherein the axial positions of respective imaging areas before and after rotation are kept unchanged relative to a scanning bed.
After the first scanning is finished, the bed board horizontally returns to zero, but the height is unchanged, the main machine rotates around the rotation shaft back and forth, the scanning areas distributed axially are switched, and after the bed board horizontally moves in place, the second scanning is finished. Specifically, the method comprises the following steps: fig. 6 shows a first scanning state, in which the first scanning area 2 corresponds to the scanning bed 3, the horizontal movement of the bed plate of the scanning bed extends into the first scanning area to complete the operation, and then the horizontal movement of the bed plate returns to zero, at this time, the rotation function of the main machine a is started, so that the main machine a rotates, the rotation process is as shown in fig. 7, until the main machine a rotates to the position shown in fig. 8, at this time, the second scanning area 6 corresponds to the scanning bed 3, and the horizontal movement of the bed plate of the scanning bed extends into the second scanning area to complete the second scanning.
In the rotation process of the main machine a, the main machine a can complete movement to realize avoidance of rotation in a manner shown in fig. 10 and fig. 14 to 23, and the specific movement process is as described above.
The design key points of this scheme mainly have following several points, introduce the detailed design of each main point respectively:
1) rotating;
two coaxial rotary bearings 4 are respectively arranged on two sides of the main machine, wherein one side is a main drive, and the other side is an auxiliary support. The turnover of the host A is controlled through the motor, the turnover part is the upper part of the host, the lower part of the host can be understood as the base 7, the base 7 can be arranged to be relatively immovable relative to the ground when the host A is turned (or the base 7 can be arranged to move and move when the host A is turned), the space size and the mass of the rotation part are reduced as much as possible in the design, the arrangement in the left and right directions can be increased (the left and right directions are the directions vertical to the figure 7), and the reversal length in the height direction is reduced. The swivel movement is shown in fig. 7 and 9.
2) Performing rotary avoidance movement;
if the space size is limited, the rotating part of the main machine interferes with the scanning bed, the base of the main machine is designed into two parts, the lower layer is the fixed base 8 fixed with the ground, the upper layer base 7 can drive the upper rotating part A to move back and forth relative to the lower layer fixed base 8, so that the rotation avoidance is realized, and the original front and back (the front and back are the left and right directions shown in figure 10, namely the front and back relative to the scanning bed 3) position state can be restored.
The back-and-forth movement can be performed simultaneously with the rotation movement, so that the movement time is reduced (of course, the host A can be turned over after the movement is completed, and the space occupied by the back-and-forth movement can be completely smaller than the space occupied by the host A before and after the maintenance, namely, the space is recycled, and the overall occupied size is not increased.
The back and forth movement is driven by a motor, the linear guide rail guides and supports the movement, and the power transmission can adopt any conventional linear movement transmission mechanism, such as a lead screw, a belt, a rack, a chain and the like. The rotational avoidance motion can be designed to implement motion avoidance by moving the scanning bed back and forth (in the form shown in fig. 24-33, which is described above, specifically implementing the back and forth motion of the scanning bed), and the motion distance is not expected to be large, and the motion scheme can be consistent with the motion scheme of the host.
In addition, the main machine A and the scanning bed can be arranged in a mode of moving back and forth, and the main machine A and the scanning bed can be selected according to the situation.
3) A positioning scheme;
the positioning scheme is divided into two parts, namely in-place positioning of rotary motion and recovery positioning of avoiding back-and-forth motion.
The positioning of the rotary motion adopts the combination of a rotary encoder and an in-place switch to realize high-precision positioning (in the prior art, the positioning can be realized by adopting the conventional mode).
The recovery positioning of avoiding the back-and-forth movement mainly ensures the repeated positioning precision when returning to the original position, and the positioning adopts a mode of combining a proximity switch with mechanical positioning to realize accurate positioning (in the prior art, the conventional mode is adopted).
4) The cable moves as shown in fig. 11.
Since the main machine rotating part needs to access all cables from the fixed frame part, the cables of the main machine rotating part need to do rotating motion. In order to protect the cable and move according to a specified path, the scheme adopts a drag chain mode to carry out cable access.
The rotary motion range of the scheme is +/-180 degrees, so that a rotary drag chain mode is adopted and the rotary drag chain is arranged on the left side and the right side of the main machine A. As shown in fig. 11, reference numeral 10 is one state of the drag chain, and 9 is the other state of the drag chain after being turned.
Besides the drag chain scheme, the cable motion can also adopt the scheme of a cable groove and the like.
That is to say, when the present application is used, first area scanning is performed, as shown in fig. 6, the scanning bed 3 is extended into the host a to perform scanning, after the first area scanning is completed, the host a is turned over, if the turning space is slightly narrow, the host a may be selectively moved backward (leftward as shown in fig. 10) so that the host a moves on the fixed base 8 (as shown in fig. 10), then the host a is turned over (or turned over while moving), as shown in fig. 7 and 9, and then the host a is moved to the position shown in fig. 8 again, so that the second group scanning may be completed.
The host a is turned over, and if the turning space is slightly tight, the bed base 3-1 can be moved backward, so that the scanning bed 3 is moved backward as a whole (i.e. moved rightward as viewed in fig. 10), then the turning operation of the host a is started, as shown in fig. 7 and 9, and then the scanning bed is moved to the position shown in fig. 8 again, so that the second group of scanning can be started.
The application has the following advantages:
1) the motion stroke of the scanning bed is greatly shortened, the structure size is reduced, the structure is simple, and the occupied space is small; 2) the movement stroke is small, the bed plate is short, and the deformation of the bed plate is small; 3) the host machine rotary motion replaces the axial horizontal motion test scanning area switching, the space is multiplexed, and the axial size is shortened; 4) the axial positions of two scanning areas of the host are designed to be kept consistent before and after rotation (the technology is easy to achieve), and the relative deformation of a bed plate influencing the image fusion precision is absolutely zero; 5) the host can be matched with any conventional scanning bed, and has high design flexibility and strong modularization.
In conclusion, the minimum structure size and the occupied space are achieved, the movement stroke of the scanning bed is greatly shortened, meanwhile, the relative deformation of any position of the bed plate in the two imaging areas is kept consistent, the image fusion precision is improved, and the subsequent calibration process of manual access is reduced.
Claims (8)
1. A multimode imaging device host comprises a host (A) and a scanning bed (3), wherein the host (A) comprises a first scanning area (2) and a second scanning area (6); the first scanning area (2) and the second scanning area (6) are coaxially arranged front and back, and the scanning bed (3) is coaxially arranged with the first scanning area (2) and the second scanning area (6), and is characterized in that: the main machine (A) is of a reversible structure so as to realize the position switching of the scanning bed (3) corresponding to the first scanning area (2) or the scanning bed (3) corresponding to the second scanning area (6).
2. A multi-mode imaging device host according to claim 1, wherein: the main machine (A) is arranged on the base (7), two rotating shafts (4) are respectively arranged on two sides of the main machine, the two rotating shafts (4) are coaxial, the rotating shafts (4) are arranged on the support (11) through bearings, and the support (11) is arranged on the base (7).
3. A multi-mode imaging device host according to claim 2, wherein: at least one rotating shaft (4) on one side is connected with a control overturning motor (12) for controlling the main machine (A) to overturn.
4. A multi-mode imaging device host according to claim 3, wherein: the control overturning motor (12) is connected with the rotating shaft (4) through a speed reducer.
5. A multi-mode imaging device host according to claim 1, wherein: the base (7) and the scanning bed (3) can move close to and away from each other.
6. The multi-mode imaging device host of claim 5, wherein: the base (7) is a movable base, the base (7) is arranged on the fixed base (8), and the base (7) can move relative to the fixed base (8).
7. The multi-mode imaging device host of claim 5, wherein: the bottom of the scanning bed (3) is arranged on the bed base (3-1), and the scanning bed (3) is of a structure which can move relative to the bed base (3-1) as a whole.
8. A multi-mode imaging device host according to claim 1, wherein: the side surface of the main machine (A) is provided with a drag chain (9) for bearing the cable of the main machine (A) or a wire groove for accommodating the cable.
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| CN202011325096 | 2020-11-24 | ||
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| CN202110431988.7A Active CN113180713B (en) | 2020-11-24 | 2021-04-21 | Multimode imaging support |
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| CN113180713B (en) | 2024-02-09 |
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