CN204318776U - Collimator apparatus, irradiator, sniffer and scanning device - Google Patents
Collimator apparatus, irradiator, sniffer and scanning device Download PDFInfo
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- CN204318776U CN204318776U CN201420614706.2U CN201420614706U CN204318776U CN 204318776 U CN204318776 U CN 204318776U CN 201420614706 U CN201420614706 U CN 201420614706U CN 204318776 U CN204318776 U CN 204318776U
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Abstract
This utility model provides a kind of collimator apparatus, and comprises the irradiator of this collimator apparatus, sniffer and scanning device.Described collimator apparatus comprises the collimator be formed by stacking by multiple collimation layer, collimates layer and all have some collimating apertures described in each, and wherein at least collimates in order to drive the driving device that layer motion makes described collimating aperture generation dislocation coupling described in one deck.Control described driving device by control device, make described collimator that dislocation coupling occur on request, to regulate and control aperture and the pass of described collimating aperture, and then realize the resolution of described collimator and/or the regulation and control of sensitivity.
Description
Technical field
The present invention relates generally to medicine imaging technique field, particularly designs a kind of containing the collimator apparatus by the stacking collimator of some collimation layers, and has the irradiator of described collimator apparatus, sniffer and scanning device.
Background technology
Single photon emission computerized tomography,SPECT imager (Single Photon Emission Computed Tomograph, hereinafter referred to as SPECT) be the nuclear medicine molecular image instrument of a kind of advanced person, the metabolic information of organism can be obtained in noninvasive mode, in the study mechanism, Treatment and diagnosis of the major diseases such as cardiovascular system diseases, nervous system disease, oncology, played important function.SPECT instrument by popping one's head in, rotary frame, scanning bed, image acquisition and processing workstation etc. form, wherein probe is made up of scintillator detector and collimator two parts usually.During imaging first by the drug injection of the radioisotope labelings such as Tc-99m to human body, then utilize probe around human body, gather gamma ray from different perspectives, obtain the two-dimentional radioactive intensity scattergram of different angles, and then by image reconstruction, the 3-D view reflecting human body radiopharmaceutical distribution can be obtained.
The performance of collimator is one of main factor affecting SPECT systematic function.Optimize the design of collimator, promoting collimator performance is one of Main Means of SPECT systematic function lifting.Collimator is normally made up of the material with radiation absorption performance, and as lead, tungsten etc., it can stop that, not along the gammaphoton of collimating aperture flight, the gammaphoton allowing edge and the collimating aperture on it to fly passes through.The gammaphoton obtained based on direction and the scintillator detector of the collimating aperture on collimator beats position on the detector, just can determine the straight path that gammaphoton flies.The performance of collimator characterizes by indexs such as spatial resolution, sensitivity, the visuals field usually, and these performance indications are by the decision such as geometric parameter (shape, size, hole depth etc. in plate size, hole), material, machining accuracy of collimator.
At present, many technical staff recognize in the industry, can be improved the resolution of collimator by the depth-to-width ratio of the suitable increase collimating aperture ratio of aperture (hole depth with) to a certain extent.
But collimator of the prior art has the following disadvantages:
Collimator is once molding, and namely its resolution and/or sensitivity have been determined arbitrarily to change again.In the clinical SPECT imaging of reality, usually can need the collimator choosing different size according to application type.This process need unloads old collimator, installs new collimator.Due to collimator massiveness, so the replacing of collimator exists larger inconvenience, also in the easy process changing, damage is caused to machine.
Therefore, for above-mentioned technical problem, be necessary to provide one to have structure improved collimator apparatus, to solve problems of the prior art.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of there is some mutual superpositions collimation layer and at least one described collimation layer can drive collimator apparatus to realize collimating aperture dislocation coupling by driven device, and there is the irradiator of described collimator apparatus, sniffer and scanning device.
One aspect of the present invention is used for realizing above-mentioned purpose, and it relates to a kind of collimator apparatus, comprising: collimator, and described collimator comprises the collimation layer of some mutual superpositions, collimates layer and be provided with some collimating apertures described in each; Driving device, described driving device, for driving at least one described collimation layer motion, makes wherein collimating aperture dislocation coupling described at least two.
The present invention is used for realizing above-mentioned purpose on the other hand, and it relates to a kind of collimator apparatus, comprising: collimator, and described collimator comprises the collimation layer of some mutual superpositions, collimates layer and be provided with some collimating apertures described in each; Driving device, described driving device is used for responsive control signal, drives at least one described collimation layer motion, make wherein collimating aperture dislocation coupling described at least two, and described driving device is also for sending corresponding feedback signal according to current driving condition; And control device, described control device for responding described feedback signal, and exports described control signal corresponding to described feedback signal to described driving device.
Wherein, described driving device comprises at least one lead-screw and at least one support, described lead-screw is provided with screw thread, described support is provided with the nut with described lead-screw routing motion near the side of described lead-screw, collimate layer or the collimation layer group that be formed by stacking by some adjacent described collimation layers is placed in described support described in one.
Wherein, described driving device comprises a driving shaft and at least one cam, described driving shaft is positioned at described cam and has some different conducts from the edge of described cam, and corresponding cam described in each is provided with the collimation layer group be formed by stacking by some adjacent described collimation layers that at least one connecting device connects described cam and corresponding described collimation layer or correspondence.
Wherein, described driving device comprises at least one driving shaft, at least one cam, described driving shaft is positioned at described cam and has some different conducts from the edge of described cam, described cam is rigidly connected with corresponding described collimation layer or the corresponding collimation layer group be formed by stacking by some adjacent described collimation layers or contacts, and promote described collimation layer or the motion of described collimation layer group, also comprise at least one elastomer, described elastomer is positioned at and supports corresponding described collimation layer or described collimation layer group one end away from described cam.
Wherein, described driving device comprises a crank, with at least one connecting rod one end and described crank hinged, the other end with collimate layer described in corresponding one or be formed by stacking by some adjacent described collimation layers one collimate layer group and connect, and a guide rail, one end of described crank is installed on power set and obtains power to drive described collimation layer or described collimation layer group at described moving on rails from described power set.
Wherein, at least one gear that described driving device comprises at least one tooth bar and engages with described tooth bar, at least one described collimation layer or the collimation layer group be formed by stacking by some adjacent described collimation layers are placed in described tooth bar.
The present invention is used for realizing above-mentioned purpose on the other hand, and it relates to a kind of irradiator, comprising: radiation source, also comprises above-mentioned collimator apparatus, and described collimator apparatus is used for collimating the ray produced from described radiation source.
The present invention is used for realizing above-mentioned purpose on the other hand, and it relates to a kind of sniffer, comprising: checkout gear, also comprises above-mentioned collimator apparatus, and described collimator apparatus is used for collimating ray, and the ray after collimation will be applied in described detector means.
The present invention is used for realizing above-mentioned purpose on the other hand, it relates to a kind of scanning device, comprising: sniffer and frame, and described sniffer is installed on described frame, and described sniffer comprises above-mentioned collimator apparatus, described collimator apparatus is used for collimating ray.
As can be seen from technique scheme, beneficial effect of the present invention is embodied in:
1. drive at least one described collimation layer motion by described driving device, make the collimating aperture dislocation coupling collimated described at least two on layer, under the prerequisite that the total depth of described collimating aperture remains unchanged, the pore size of described collimating aperture and/or hole shape can be regulated and controled according to dislocation coupled motions, namely the depth-to-width ratio of described collimating aperture has adjustability, and that is the resolution of described collimator and/or sensitivity can regulate and control as required.
2. regulated and controled the dislocation coupling of described collimating aperture to the described control signal that described driving device sends by described control device, and export described feedback signal according to current driving condition to described control device by described driving device, make control accuracy higher, use more convenient.
Accompanying drawing explanation
Fig. 1 is total schematic diagram of scanning device of the present invention;
Fig. 2 be the shape of collimating aperture in the present invention for square time, the contrast schematic diagram before and after double-deck dislocation;
Fig. 3 is the shape of collimating aperture in the present invention when being regular hexagon, the contrast schematic diagram before and after double-deck dislocation;
Fig. 4 is the shape of collimating aperture in the present invention when being regular hexagon, the contrast schematic diagram before and after three fault positions;
Fig. 5 is the shape of collimating aperture in the present invention when being equilateral triangle, the contrast schematic diagram before and after three fault positions;
Fig. 6 be the shape of collimating aperture in the present invention for time circular, the contrast schematic diagram before and after double-deck dislocation;
Fig. 7 is that in the present invention, driving device is integrally-built top view during feed screw nut's drives structure;
Fig. 8 is partial schematic diagram when driving device is feed screw nut's structure in the present invention;
Fig. 9 is the side view of another angle of Fig. 8, and the sectional view on this side view A-A direction;
Figure 10 is when in the present invention, driving device is cam driving structure, its connecting device be kinematic link and slide rail time top view, and the sectional view of this top view on B-B direction;
Figure 11 is when in the present invention, driving device is cam driving structure, its connecting device be kinematic link and respectively with cam and collimate the hinged top view of layer;
Figure 12 is the top view that the kinematic link of Figure 10 slides into another location on described slide rail;
The schematic diagram that Figure 13 is cam when being irregular structure;
Figure 14 is integrally-built axonometric chart when driving device is crank guide rail drives structure in the present invention;
Figure 15 is the front view of Figure 14;
Figure 16 is the side view of Figure 14;
Figure 17 is integrally-built axonometric chart when driving device is gear-rack drive structure in the present invention;
Figure 18 is the schematic diagram that in Figure 17, a gear engages with two tooth bars.
Detailed description of the invention
For ease of better understanding the object, the technical characteristics and the effect of the present invention, now with detailed description of the invention, further explaination is done to the present invention by reference to the accompanying drawings.
Before introducing the present invention in detail, first define the concept of " collimation layer " and " dislocation coupling ".Collimation layer can be understood from two angles: one is be seen as to carry out cutting (being prescinded in hole) to a collimator and the sub-collimator that obtains; Two be by overlapped in series formed in multiple collimators of a colimated light system together each.Ray will comprise the collimator of multiple collimation layer through one, must successively through each collimation layer.The coupling that misplaces refers to that the centrages of the collimating aperture of two collimation layers both when series coupled do not overlap, and on the contrary, alignment coupling then refers to that two centrages collimating the corresponding collimating aperture of layer overlap.
Due to dislocation coupling make the size of the effective aperture of collimating aperture even shape be all different from alignment coupling result, so dislocation coupling collimator performance all different with the performance of the collimator (being equivalent to a monolayer collimator) be coupled that aligns from all layers.Further, the change in the direction, dislocation size etc. of dislocation all can change the impact of performance of multi-layered collimator.Based on this principle, the collimator apparatus that the present invention proposes can realize collimator, and in spatial resolution, both sensitivity, at least one gets a promotion, and also can realize the regulation and control of the dislocation direction of each interlayer of collimation device, the one or more adjustable performance of dislocation size.
Collimating aperture type and the dislocation design thereof of the Multi-layer staggered coupling collimator that the present invention proposes comprise following five classes, but are also not limited to type in following five:
The first kind designs, as shown in Figure 2, it is characterized in that: collimation layer on collimating aperture shape for square (for convenience of description, the direction setting foursquare one group of opposite side is y direction, then another group is z direction to edge direction), the arrangement mode of collimating aperture is square net formula arrangement (in y direction and the tiling of z direction); Collimation layer adjacent in N number of collimation layer all has dislocation, the direction of dislocation can just in y direction, also can just in z direction, also can simultaneously in y and z both direction, it is 1/2 ~ 1/M of the pitch of holes of collimator layer that the result of dislocation makes to be parallel to direction, hole collimation device carry out the projecting pitch of holes of gained chequer, and M span is 2 ~ N.
Equations of The Second Kind designs, as shown in Figures 3 and 4, it is characterized in that: the shape of the collimating aperture on collimation layer is regular hexagon, the arrangement mode in regular hexagon hole is equilateral triangle grid formula (grid is equilateral triangle, and each lattice point correspond to the center of a collimating aperture) arrangement; Collimation layer adjacent in N number of collimation layer all has dislocation, after dislocation, the center of collimating aperture and center (this center is identical to the distance at the center in its three the adjacent holes) alignment on a summit of the hexagonal hole of a rear collimation layer on previous collimation layer.
Third-order design, as shown in Figure 6, is characterized in that: the shape of the collimating aperture on collimation layer is polygon that is circular or sub-circular arbitrarily, and polygon or the circular port of any sub-circular arrange with equilateral triangle grid; Collimation layer adjacent in N number of collimation layer all has dislocation, and after dislocation, previous collimation Ceng Kong center and a rear point (this point is in region folded by three adjacent between two holes, and the distance to the center in these three holes is equal) collimated on layer align.
4th class design, as shown in Figure 2, it is characterized in that: the shape of the collimating aperture on collimation layer is polygon that is circular or sub-circular, the arrangement mode of collimating aperture is square net formula (grid is square, and each lattice point in grid correspond to the center of a collimating aperture) arrangement; Collimation layer adjacent in N number of collimation layer all has dislocation.The direction setting foursquare one group of opposite side is y direction, another group is z direction to edge direction, dislocation between described collimation layer is in y direction and/or z direction, the direction of dislocation can just in the direction of one group of parallel edges of square net, also can misplace respectively in the direction of its two groups of parallel edges, dislocation size is 1/2 pitch of holes simultaneously.
5th class design, as shown in Figure 5, it is characterized in that: the shape of the collimating aperture on collimation layer is equilateral triangle, the arrangement mode of collimating aperture is regular hexagonal cell formula (grid is regular hexagon, and each lattice point in grid correspond to the center of a collimating aperture) arrangement; Collimation layer adjacent in N number of collimation layer all has dislocation, the direction misplaced is along the direction on tri-angle-holed limit, dislocation size is the sqrt (3)/2 times (sqrt represents extracting operation) of the hexagonal mesh length of side, if dislocation size does not infinitely circulate or circulating decimal, the value of dislocation size gets approximation.
For realizing the dislocation coupling of above-mentioned collimating aperture, the present invention proposes following technical scheme:
Fig. 1 is the general illustration of scanning device of the present invention, and described scanning device comprises: frame, sniffer and control device.Described frame is for carrying described sniffer, and described sniffer comprises collimator apparatus and checkout gear, and described collimator apparatus is used for collimating the ray passing detected body, and the ray after collimation will be applied on described checkout gear.The ray passing detected body can have a radiation source to produce, and also can be produced by the radiopharmaceutical in detected body.
Wherein, described collimator apparatus comprises: collimator and driving device.Described collimator comprises the collimation layer 100 of some mutual superpositions, collimates layer 100 and be provided with some collimating apertures described in each; Described driving device is used for responsive control signal, drives at least one described collimation layer 100 to move, and makes wherein collimating aperture dislocation coupling described at least two, also sends control system to for current state is converted into feedback signal.Described control device comprises: CPU, input equipment and memory device.Described feedback signal for receiving described feedback signal, and is stored in described memory element by described CPU.Based on described feedback signal, described CPU receives the input signal of described input equipment generation and exports described control signal to described driving device, orders described driving device corresponding movement response to occur to drive the dislocation coupled motions of described collimator.
Wherein, described driving device has multiple enforcement structure, the present invention will mainly for wherein four kinds implement structures be described in detail.
One, feed screw nut's drives structure
As Fig. 7, described driving device comprises a support 3, and described support 3 comprises support arm 32 and an inner support 31, described inner support 31 be positioned at described support arm 32 inner side.Described support arm 32 is provided with track, and several slide blocks 33 are positioned at described track and connect described inner support 31, and described inner support 31 can be slided along the relatively described support arm 32 of described track under the ordering about of external force.Described driving device also has the outside that a housing is positioned at described support arm 32, described housing is also provided with track, and also have several slide blocks 33 to be positioned at described track and connect described support arm 32, described support arm 32 can be slided along the relatively described housing of described track under the ordering about of external force.Orbital direction on described support arm 32 is perpendicular to the orbital direction on described housing.
Described inner support 31 is mounted with described in one and collimates layer 100, or be mounted with the collimation layer group be formed by stacking by some adjacent described collimation layers 100.The side of described inner support 31 is provided with a projection 2, offers a through hole, be provided with female thread in hole in described protruding 2, and namely described protruding 2 are equivalent to a nut.The side of described support arm 32 is also provided with described protruding 2, and the side of described inner support 31 is perpendicular to the side of described support arm 32, and the side defining described inner support 31 is X-direction, and the side of described support arm 32 is Y direction.
Corresponding described in each protruding 2, all have a lead-screw 1 routing motion with it, described lead-screw 1 is provided with the external screw thread mated with described female thread.When the described lead-screw 1 of X-direction moves, the nut of X-direction will be driven to move, namely described inner support 31 will be subjected to displacement in Y direction, and corresponding described collimation layer 100 or described collimation layer group will collimate layer 100 with other or collimate layer group and occur to misplace in Y direction and be coupled.When the described lead-screw 1 of Y direction moves, the nut of Y direction will be driven to move, namely described support arm 32 will drive described inner support 31 to be subjected to displacement in X-direction together, and corresponding described collimation layer 100 or described collimation layer group will collimate layer 100 with other or collimate layer group and occur to misplace in Y direction and be coupled.Described collimator, by the dislocation coupling in X-axis and Y direction, changes the attribute of its collimating aperture, comprises the size and shape changing collimating aperture aperture, and then realize the resolution of described collimator and/or the regulation and control of sensitivity.
Described feed screw nut's drives structure also has another embodiment, this another embodiment is from the different of above-described embodiment: as Fig. 8 and Fig. 9, described in each, the relative both sides of lead-screw 1 all have support 3 described in, on described two supports 3 described protruding 2 in opposite directions and relative misalignment arrange, portion with external threads on described lead-screw 1 is plus thread, portion with external threads is left-hand thread, and described plus thread and described left-hand thread all can move with described screw-internal thread fit.Described lead-screw 1 is arranged in described two projections 2 simultaneously, and makes described plus thread and wherein protruding 2 to coordinate described in one, makes described left-hand thread coordinate with wherein another projection 2 simultaneously.When described lead-screw 1 moves, under the drive of described plus thread and described left-hand thread, described two supports 3 move in the opposite direction, and namely corresponding described collimation layer 100 or the mutual adverse movement of described collimation layer group realize dislocation coupling.
Two, cam driving structure
As Figure 10 to Figure 12, described driving device comprises cam 4 and a driving shaft 5, described driving shaft 5 has multiple different conduct between the position of described cam 4 and the edge of described cam 4, and namely described driving shaft 5 has multiple different distance to the edge of described cam 4.As shown in figure 13, when described cam 4 is irregularly shaped, described driving shaft 5 is positioned at the center of described cam 4, a, b, a ', b ' is point on described cam 4 edge.Obvious a is less than the distance of a ' to center to the distance at center, and b is less than the distance of b ' to center to the distance at center.When described cam 4 is the shape of rule, described driving shaft 5 is positioned at the non-central place of described cam 4.
Corresponding cam 4 described in each is provided with a connecting device 6, and described connecting device 6 one end connects described cam 4, and the other end connects the collimation layer group collimating layer 100 described in one or be formed by stacking by some adjacent described collimation layers 100.When described driving shaft 5 drives described cam 4 to rotate, because described driving shaft 5 has different conducts from the edge of described cam 4, described collimation layer 100 or described collimation layer group are promoted to do back and forth movement by described cam 4 under the gearing of described connecting device 6.
When driving shaft described in one 5 is connected with multiple described cam 4, if cam 4 has identical profile described in each, then described in adjacent two, cam 4 has suitable phase contrast, to make multiple corresponding described collimation layer 100 or collimation layer group have different kinestates, guarantee dislocation coupling occurs.
Described connecting device 6 also can have various structures: when (1) described connecting device 6 is for kinematic link, as Figure 10, described cam 4 is provided with a slide rail 41, described kinematic link 6 one end and one collimates layer 100 or and collimates layer group and be rigidly connected, the other end is provided with a slide block 61, described slide block 61 is positioned at described slide rail 41, and can do back and forth movement in described slide rail 41; (2) described connecting device 6 is a kinematic link, and as Figure 11, collimate that to collimate layer group described in layer 100 or hinged described in one end of described kinematic link and, the described cam 4 of the other end also with corresponding is hinged; (3) described connecting device 6 is an elastomer (not shown), described elastomer one end connects corresponding described collimation layer 100 or described collimation layer group, the other end connects corresponding described cam 4, described elastomer be spring or rubber etc. some there is elastic material or structure.
Corresponding cam 4 described in each can also be provided with two described connecting devices 6, and as Figure 10, described cam 4 is provided with slide rail 41 described in, and described two connecting devices 6 are kinematic link, and described two kinematic link mutual dislocation are parallel.Kinematic link one end described in each all collimates layer 100 or and collimates layer group and be rigidly connected with one, the other end is equipped with slide block 61 described in, and described slide block 61 is all positioned at same described slide rail 41, and can do back and forth movement in described slide rail 41.
Described cam driving structure also has another embodiment, this another embodiment is with the difference of above-described embodiment: described cam 4 is rigidly connected or direct rigid contact by connecting device with corresponding described collimation layer 100 or corresponding collimation layer group, and described cam 4 promotes described collimation layer 100 or the motion of described collimation layer group.In order to guarantee that described collimation layer 100 or described collimation layer group can do back and forth movement, be also provided with at least one elastomer, described elastomer is positioned at and supports corresponding described collimation layer 100 or described collimation layer group one end away from described cam 4.
Three, crank guide rail drives structure
As Figure 14 to Figure 16, described driving device comprises some guide rails 10 of a crank 7 and some connecting rods 8 and correspondence, one end and the described crank 7 of connecting rod 8 described in each are hinged, the other end and one collimate layer 100 or be formed by stacking by some adjacent described collimation layers 100 one collimate layer group and be connected, described collimation layer 100 or described collimation layer group are positioned at described guide rail 10.Defining any two points on described crank 7, is some near-end 71, and another point is far-end 72.
Described near-end 71 is relative to described far-end 72 closer to power set 9, and under the driving of described power set 9, the relatively described near-end 71 of described far-end 72 has the larger amplitude of oscillation, and namely the linear velocity of described far-end 72 is greater than the linear velocity of described near-end 71.So the some described connecting rod 8 be distributed between described near-end 71 from described far-end 72 drives corresponding described collimation layer 100 or collimates layer group have different kinestates, described collimator can be successfully made to realize dislocation coupling.
Certainly, can also be that described near-end 71 and described far-end 72 are symmetricly set on described power set 9 both sides, under the driving of described power set, though described near-end 71 and described far-end 72 have the identical amplitude of oscillation, there is contrary swaying direction.So the some described connecting rod 8 be distributed between described near-end 71 with described far-end 72 drives corresponding described collimation layer 100 or collimates layer group have different motion state, described collimator can be successfully made to realize dislocation coupling.
Four, rack pinion drives structure
As Figure 17 and Figure 18, described driving device comprises some gears 11 and some tooth bars 12, the collimation layer group described tooth bar 12 being mounted with a collimation layer 100 or being formed by stacking by some adjacent described collimation layers 100.Described gear 11 engages with corresponding described tooth bar 12, when described gear 11 rotates, corresponding described tooth bar 12 can be driven to move, and then drives described collimation layer 100 or described collimation layer group to collimate layer 100 with other or collimate layer group and occur to misplace and be coupled.
As Figure 18, the relative both sides of gear 11 described in each are equipped with tooth bar 12 described in and are engaged with, when described gear 11 rotates, can move in the opposite direction with described two tooth bars 12 of described gears meshing, namely lay respectively at the described collimation layer 100 on described two tooth bars 12 or described collimation layer group meeting reverse dislocation motion mutually, and then realize the dislocation coupling of described collimator.
Certainly, again to simplify frame for movement, wherein have at least and collimate layer 100 described in one or described collimation layer group can not be driven by described driving device, then this static described collimation layer or described collimation layer group generation dislocation motion realize the dislocation coupling of described collimator relatively to collimate layer 100 or described collimation layer group described in other.
The present invention has following beneficial effect:
(1) have at least in some collimation layers 100 that collimator apparatus provided by the invention comprises and collimate layer 100 described in one and can be driven by described driving device, be coupled with the dislocation that this realizes collimating with other layer 100, and then realize the resolution of described collimator apparatus and/or the regulation and control of sensitivity, use easily, collimator can be changed frequently because of the problem of resolution and/or sensitivity more in actual use.
(2) the invention provides four kinds of driving devices, structure is simple, can conveniently make described collimator apparatus realize change or the switching of resolution and/or sensitivity.
(3) adopt described control device to control described driving device, both can save manpower, control also can be made more accurate.
Above-mentioned explanation is the detailed description for preferred embodiment of the present invention, but above-described embodiment is also not used to limit patent claim of the present invention, all equal changes of completing under disclosed technical spirit or modify are changed, and all belong to the scope of the claims that the present invention is contained.
Claims (26)
1. a collimator apparatus, is characterized in that, comprising:
Collimator, described collimator comprises the collimation layer of some mutual superpositions, collimates layer and be provided with some collimating apertures described in each;
Driving device, described driving device, for driving at least one described collimation layer motion, makes wherein collimating aperture dislocation coupling described at least two.
2. collimator apparatus as claimed in claim 1, it is characterized in that: described driving device comprises at least one lead-screw and at least one support, described lead-screw is provided with screw thread, described support is provided with the nut with described lead-screw routing motion near the side of described lead-screw, collimate layer or the collimation layer group that be formed by stacking by some adjacent described collimation layers is placed in described support described in one.
3. collimator apparatus as claimed in claim 2, it is characterized in that: the partial threads of described lead-screw is plus thread, the partial threads of described lead-screw is left-hand thread, the relative both sides of lead-screw described in each are respectively equipped with support described in, and the described nut on described two supports coordinates with the plus thread on described lead-screw and left-hand thread respectively.
4. collimator apparatus as claimed in claim 2, is characterized in that: collimate layer group described at least one described collimation layer or and do not driven by described lead-screw.
5. collimator apparatus as claimed in claim 2, it is characterized in that: support described in each comprises a support arm and an inner support, described inner support is positioned at the inner side of described support arm, at least one described nut is equipped with in described support arm and the orthogonal both sides of described inner support, corresponding nut described in each is equipped with lead-screw described in, wherein lead-screw described in promotes the relatively described support arm of described inner support and moves along first direction, lead-screw described in another promotes described support arm and drives described inner support to move along the second direction perpendicular to described first direction together, and described collimation layer or described collimation layer group are placed in described inner support.
6. collimator apparatus as claimed in claim 5, it is characterized in that: the partial threads of described lead-screw is plus thread, the partial threads of described lead-screw is left-hand thread, the relative both sides of lead-screw described in each are respectively equipped with support described in, and the described nut on described two supports coordinates with the plus thread on described lead-screw and left-hand thread respectively.
7. collimator apparatus as claimed in claim 5, is characterized in that: collimate layer group described at least one described collimation layer or and do not driven by described lead-screw.
8. collimator apparatus as claimed in claim 1, it is characterized in that: described driving device comprises a driving shaft and at least one cam, described driving shaft is positioned at described cam and has some different conducts from the edge of described cam, and corresponding cam described in each is provided with the collimation layer group be formed by stacking by some adjacent described collimation layers that at least one connecting device connects described cam and corresponding described collimation layer or correspondence.
9. collimator apparatus as claimed in claim 8, it is characterized in that: described driving shaft is connected with cam described at least two, cam described in each has identical contour structures and has phase contrast between adjacent described two cams.
10. collimator apparatus as claimed in claim 8, it is characterized in that: described driving shaft is connected with cam described at least two, described two cams have different contour structures.
11. collimator apparatuses as claimed in claim 8, it is characterized in that: described cam is provided with a slide rail, described connecting device is a kinematic link, its one end is rigidly connected with corresponding described collimation layer or described collimation layer group, its other end is provided with a slide block and is positioned at described slide rail, and described slide rail allows described slide block to do back and forth movement in described slide rail.
12. collimator apparatuses as claimed in claim 8, it is characterized in that: described cam is provided with a slide rail, two are had at least with the described connecting device of cam engagement described in each, described connecting device is the parallel kinematic link of mutual dislocation, one end of kinematic link described in each is rigidly connected with corresponding described collimation layer or described collimation layer group, the other end is equipped with a slide block and is positioned at same described slide rail, and described slide rail allows described slide block to do back and forth movement in described slide rail.
13. collimator apparatuses as claimed in claim 8, is characterized in that: described connecting device is a kinematic link, its one end and corresponding described collimation layer or described collimation layer group hinged, the other end is hinged with corresponding described cam.
14. collimator apparatuses as claimed in claim 8, is characterized in that: described connecting device is an elastomer, and described elastomer one end connects corresponding described collimation layer or described collimation layer group, and the other end connects corresponding described cam.
15. collimator apparatuses as claimed in claim 1, it is characterized in that: described driving device comprises at least one driving shaft, at least one cam, described driving shaft is positioned at described cam and has some different conducts from the edge of described cam, described cam is rigidly connected or rigid contact with corresponding described collimation layer or the corresponding collimation layer group be formed by stacking by some adjacent described collimation layers, and promote described collimation layer or the motion of described collimation layer group, also comprise at least one elastomer, described elastomer is positioned at and supports corresponding described collimation layer or described collimation layer group one end away from described cam.
16. collimator apparatuses as described in claim 8 or 15, is characterized in that: at least one described collimation layer or described collimation layer group be not by described actuated by cams.
17. collimator apparatuses as claimed in claim 1, it is characterized in that: described driving device comprises a crank, with at least one connecting rod one end and described crank hinged, the other end with collimate layer described in corresponding one or be formed by stacking by some adjacent described collimation layers one collimate layer group and connect, and a guide rail, one end of described crank is installed on power set and obtains power to drive described collimation layer or described collimation layer group at described moving on rails from described power set.
18. collimator apparatuses as claimed in claim 17, it is characterized in that: described crank is connected with some described connecting rods, one end and the described crank of connecting rod described in each are hinged, and the other end collimates layer group described in layer or one and is connected with collimating described in one, defining the upper any two points of described crank, is some far-end, and another point is near-end, under the driving effect of described power set, described far-end is different from described near-end speed.
19. collimator apparatuses as claimed in claim 17, is characterized in that: at least one described collimation layer or described collimation layer group are not driven by described crank.
20. collimator apparatuses as claimed in claim 1, it is characterized in that: at least one gear that described driving device comprises at least one tooth bar and engages with described tooth bar, at least one described collimation layer or the collimation layer group be formed by stacking by some adjacent described collimation layers are placed in described tooth bar.
21. collimator apparatuses as claimed in claim 20, is characterized in that: the relative both sides of gear described in each are respectively provided with tooth bar described in one and described gears meshing.
22. collimator apparatuses as claimed in claim 22, is characterized in that: at least one described collimation layer or described collimation layer group be not by described gear drive.
23. 1 kinds of collimator apparatuses, is characterized in that, comprising:
Collimator, described collimator comprises the collimation layer of some mutual superpositions, collimates layer and be provided with some collimating apertures described in each;
Driving device, described driving device is used for responsive control signal, drives at least one described collimation layer motion, make wherein collimating aperture dislocation coupling described at least two, and described driving device is also for sending corresponding feedback signal according to current driving condition;
Control device, described control device for responding described feedback signal, and exports described control signal based on described feedback signal to described driving device.
24. 1 kinds of irradiators, comprise radiation source, it is characterized in that: described irradiator also comprises the collimator apparatus described in any one of power 1 to power 23, and described collimator apparatus is used for collimating the ray produced from described radiation source.
25. 1 kinds of sniffers, it comprises checkout gear, it is characterized in that: described sniffer also comprises the collimator apparatus described in any one of claim 1 to 23, described collimator apparatus is used for collimating ray, and the ray after collimation will be applied on described checkout gear.
26. 1 kinds of scanning devices, it comprises sniffer and frame, and described sniffer is installed on described frame, it is characterized in that: described sniffer comprises the collimator apparatus described in any one of claim 1 to 23, and described collimator apparatus is used for collimating ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614706.2U CN204318776U (en) | 2014-10-23 | 2014-10-23 | Collimator apparatus, irradiator, sniffer and scanning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614706.2U CN204318776U (en) | 2014-10-23 | 2014-10-23 | Collimator apparatus, irradiator, sniffer and scanning device |
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| CN204318776U true CN204318776U (en) | 2015-05-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016050152A1 (en) * | 2014-09-29 | 2016-04-07 | 武汉知微科技有限公司 | Multilayer staggered coupling collimator, radiator, detector and scanner |
| CN105581806A (en) * | 2014-10-23 | 2016-05-18 | 武汉知微科技有限公司 | Collimation device, radiator, detection device and scanning equipment |
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2014
- 2014-10-23 CN CN201420614706.2U patent/CN204318776U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016050152A1 (en) * | 2014-09-29 | 2016-04-07 | 武汉知微科技有限公司 | Multilayer staggered coupling collimator, radiator, detector and scanner |
| US10219761B2 (en) | 2014-09-29 | 2019-03-05 | Wuhan Acehivision Technology Co., Ltd | Multilayer staggered coupling collimator, radiator, detector and scanner |
| CN105581806A (en) * | 2014-10-23 | 2016-05-18 | 武汉知微科技有限公司 | Collimation device, radiator, detection device and scanning equipment |
| CN105581806B (en) * | 2014-10-23 | 2021-07-02 | 武汉知微科技有限公司 | Collimating device, radiator, detecting device and scanning equipment |
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