CN102217948B - Device and method for sticking crystals and light guides of PET (position-emission tomography) detector - Google Patents
Device and method for sticking crystals and light guides of PET (position-emission tomography) detector Download PDFInfo
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- CN102217948B CN102217948B CN 201110121616 CN201110121616A CN102217948B CN 102217948 B CN102217948 B CN 102217948B CN 201110121616 CN201110121616 CN 201110121616 CN 201110121616 A CN201110121616 A CN 201110121616A CN 102217948 B CN102217948 B CN 102217948B
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Abstract
The invention provides a device which is used for sticking crystals and light guides of a PET (position-emission tomography) detector and can improve the sticking efficiency of the crystals and the light guides. The device comprises a clamping piece and a fixing framework used for holding and fastening the clamping piece, wherein the depth of the fixing framework is greater than or equal to the height of the clamping piece; the clamping piece comprises at least one pair of V-shaped or sawtooth-shaped troughs used for fixing and holding the crystals and the light guides; a diversion trench vertical to the direction of the troughs and penetrating the clamping piece is arranged between each pair of troughs; the depth of the diversion trench is greater than the depth of the trough; moreover, one half of each pair of troughs connected with the fixing framework is an inner trough and the other half is an outer trough; the length of the crystal or the light guide is greater than the length of the trough and is smaller than the sum of the length of the inner trough and the width of the diversion trench. The device can be used for conveniently sticking the light guides and crystals with smaller shapes and can guarantee the sticking alignment and proper treatment on residual bonds, thereby improving the sticking efficiency and quality of the light guides and the crystals.
Description
Technical field
The present invention relates to positron emission tomoscan (PET, positron emission tomography) technical field, more specifically, relate to a kind of apparatus and method of crystal and the photoconduction for bonding PET detector.
Background technology
At PET (Positron Emission Tomography, PET (positron emission tomography) scanner) in the application, the energy of a pair of gamma ray that requirement produces after to positron annihilation and the position of hitting detector are measured accurately, to determine the radioactive nucleus position and to quantize the physiological processes of human body.
Present topmost PET detector is that scintillator detector adds photomultiplier tube, after ray hits and produces blinking behind the scintillator and collected by photomultiplier tube and amplify, obtain the signal of telecommunication, according to the size of this signal of telecommunication and the position of collecting the photomultiplier tube of this signal of telecommunication, just can judge the transmitting site of ray.In order to improve the detection efficient of detector, the production firm of PET detector is devoted to the optimized choice of PET detector components and parts and the improvement of production technology always.
In another patent (application number 201010168394.3) of the inventor, a kind of new probe designs method has been proposed.In the method, the scintillation crystal array that comprises a plurality of scintillation crystal bars is bonding with the optical fiber array that comprises a plurality of photoconduction bars of an equal length and width size first, become whole detector again and by the photomultiplier tube array coupling that a plurality of photomultiplier tubes form, utilize the one-to-one relationship of crystal bar and photoconduction bar that crystal and photoconduction are done the as a whole light distribution of carrying out, thereby shorten the length of required photoconduction bar, reduce the loss in the optical transmission process, improve the detection efficient of detector.
But in the production process of above-mentioned patent application, how making all crystal bars and photoconduction bar can both complete matching bonding, be the key that guarantees detection efficient.Can inevitably there be certain error in the manual adhering technique that adopts in traditional PET detector production technology, can't guarantee crystal bar and photoconduction bar flatness separately, also is difficult to guarantee in addition all crystal bars and the alignment relation between the photoconduction bar.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide a kind of crystal that is used for bonding PET detector of the adhesion efficiency that can improve photoconduction and crystal and the apparatus and method of photoconduction.
According to an aspect of the present invention, provide a kind of for the crystal of bonding PET detector and the device of photoconduction, comprised fastener and be used for holding the also fixed frame of fastening described fastener, wherein,
The degree of depth of described fixed frame is more than or equal to the height of described fastener;
Described fastener comprises that at least one pair of is used for fixedly holding V-arrangement or the zigzag draw-in groove of described crystal and described photoconduction, be provided with the guiding gutter that run through described fastener perpendicular with described draw-in groove direction between every pair of draw-in groove, the degree of depth of described guiding gutter is greater than the degree of depth of described draw-in groove; And,
Half of joining with described fixed frame in the every pair of draw-in groove is inner card cage, and second half is exterior bayonet slot,
The length of described crystal or described photoconduction is greater than the length of described inner card cage, and less than the length of described inner card cage and the width sum of described guiding gutter.
According to a further aspect in the invention, provide a kind of method of crystal and the photoconduction for bonding PET detector, having comprised:
Described fastener in the said apparatus is fixed in institute's fixed frame;
In the crystal that needs are bonding or the photoconduction one snaps on the inner card cage of described fastener, and it is pushed into the one side that described fixed frame and described inner card cage join, one end and described fixed frame are joined, and the other end is positioned on the described guiding gutter of described fastener;
In the bonding crystal of described needs or the bonding end coated with adhesive of photoconduction;
The photoconduction that needs are bonding or in the crystal another snap on the described exterior bayonet slot, need bonding direction to promote along described draw-in groove, utilize binding agent that described crystal and photoconduction are alignd above described guiding gutter bonding; And
Utilize described guiding gutter to collect unnecessary binding agent.
Utilize the above-mentioned crystal of bonding PET detector and the apparatus and method of photoconduction of being used for according to the present invention, photoconduction and crystal that can bonding shape is less easily, and guarantee bonding alignment and to the dealing carefully with of excess adhesive, thereby improve adhesion efficiency and the quality of photoconduction and crystal.
In order to realize above-mentioned and relevant purpose, one or more aspects of the present invention comprise the feature that the back will describe in detail and particularly point out in the claims.Following explanation and accompanying drawing describe some illustrative aspects of the present invention in detail.Yet, the indication of these aspects only be some modes that can use in the variety of way of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Description of drawings
By the content of reference below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present invention, other purpose of the present invention and result will understand and easy to understand more.In the accompanying drawings:
Fig. 1 is for using the overall structure schematic diagram of the bonding PET detector of the present invention.
Fig. 2 a is the structural representation of the fastener of the embodiment of the invention;
Fig. 2 b is the structural representation of the fixed frame of the embodiment of the invention.
Fig. 3 is the combinative structure schematic diagram according to the device of the crystal that is used for bonding PET detector of the embodiment of the invention and photoconduction.
Fig. 4 is the combinative structure schematic diagram of the device of the crystal that is used for bonding PET detector of another embodiment of the present invention and photoconduction;
The fixed form schematic diagram of the fastener of Fig. 5 embodiment of the invention and fixed frame;
Fig. 6 is photoconduction bar and crystal bar assembling schematic diagram in embodiments of the present invention;
Fig. 7 is the crystal of bonding PET detector of the embodiment of the invention and the method schematic diagram of photoconduction.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
The specific embodiment
Below with reference to accompanying drawing specific embodiments of the invention are described in detail.
Crystal and the PET panel detector structure of the apparatus and method of photoconduction (application number 201010168394.3) that propose in another related application for the inventor with scintillation crystal array and optical fiber array for bonding PET detector provided by the invention designs, because because photoconduction and crystal all are the less objects of shape, therefore align and bonding bad operation also easily causes larger alignment error with hands, enough more easily crystal bar and the photoconduction bar of bonding composition scintillation crystal array and optical fiber array of secondary alignment adhering apparatus prodigiosin provided by the invention.
Fig. 1 shows the overall structure schematic diagram of using the bonding PET detector of the present invention.As shown in Figure 1, this PET detector comprises scintillation crystal array 2 and the optical fiber array 4 that alignment is bonding, and with the photomultiplier tube array 7 of optical fiber array coupling, wherein scintillation crystal array is made of a plurality of crystal bars 1, optical fiber array is made of a plurality of photoconduction bars 3, and photomultiplier tube array has a plurality of photoconductions 6 to consist of.
For crystal bar 1 shown in Figure 1 and 3 alignment of photoconduction bar is bonding, the invention provides a kind of bonding utensil of secondary alignment that utilizes, namely be used for the crystal of bonding PET detector and the device of photoconduction.
Fig. 2 a, Fig. 2 b and Fig. 3 are decomposition texture and the combinative structure schematic diagram according to the device of the crystal that is used for bonding PET detector of the embodiment of the invention and photoconduction, wherein Fig. 2 a is the structural representation of the fastener of the embodiment of the invention, and Fig. 2 b is the structural representation of the fixed frame of the embodiment of the invention.
As shown in Figures 2 and 3, provided by the invention for the crystal of bonding PET detector and the device of photoconduction, comprise fastener 10 and be used for holding the also fixed frame 20 of fastening described fastener, wherein, the degree of depth of fixed frame 20 is more than or equal to the height of fastener 10; Fastener 10 comprises that at least one pair of is used for fixedly holding by the V-arrangement of bonding crystal bar and photoconduction bar or zigzag draw-in groove, the size of the degree of depth of draw-in groove and size and crystal bar and photoconduction bar coupling can be so that crystal bar and photoconduction bar be neither loosening when snapping in also easily takes out with comparalive ease.And, being provided with the guiding gutter that run through this fastener 10 13 perpendicular with the draw-in groove direction between every pair of draw-in groove, the degree of depth of guiding gutter 13 does not affect the bonding of photoconduction bar and crystal bar greater than the degree of depth of draw-in groove in order to take in unnecessary binding agent.
For the convenience of explaining, in every pair of draw-in groove, can with after the combination of fastener 10 and fixed frame and fixed frame join half be decided to be inner card cage 12, second half is decided to be exterior bayonet slot 11.
In a preferred embodiment of the present invention, the V-arrangement on the fastener or zigzag draw-in groove (comprising inner card cage and exterior bayonet slot) utilize high-precision line cutting one-shot forming processing, ensure the precision of aligning with this.
In the fixed frame 20 with the vertical one side of being close to of draw-in groove of fastener the reference plane 21 of fixedly aliging during as bonding photoconduction bar and crystal bar.
At bonding crystal bar and the photoconduction rectangular slab of stone, can snap in the crystal bar at inner card cage first, the recycling exterior bayonet slot promotes bonding photoconduction bar; Also can snap in the photoconduction bar at inner card cage first, the recycling exterior bayonet slot promotes bonding crystal bar.Just in time be positioned at the top of guiding gutter 13 for the bonding location that makes crystal bar and photoconduction bar, place the length of crystal bar on the inner card cage or photoconduction bar need to be greater than the length of inner card cage 12, and less than the length of inner card cage 12 and the width sum of guiding gutter 13.For the convenience of explaining, in following embodiment, all promote bonding crystal bar and describe as example first to snap in photoconduction bar, recycling exterior bayonet slot at inner card cage.
In Fig. 2 and embodiment shown in Figure 3, fixed frame is square, and the width of its inner space is greater than the width of fastener, so that operator's bonding operation.Also can be U-shaped as shown in Figure 4 with fixed frame design, it be that the perpendicular one side of fixed frame 20 draw-in grooves interior and fastener is fixed that fastener 10 is close to fixing alignment reference plane 21, and the opening of U-shaped is the bonding operation for the ease of operator equally.
The fixing means of fastener and fixed frame has multiple, can adopt the fixed form of through hole and bolt, also can be respectively on fastener and fixed frame corresponding positioning convex and/or the location depression that matches and use that arrange, the position of positioning convex and location depression can uniform Design in bottom or the both sides of fastener and fixed frame.Uniform Design as shown in Figure 5 is in the positioning convex of the both sides of fastener and fixed frame and the fixed form of location depression.
Fig. 6 is photoconduction bar and crystal bar assembling schematic diagram in embodiments of the present invention.In the time of assembling, at first fastener 10 is fixed in the fixed frame 20, then photoconduction bar 3 is snapped in the inner card cage 12 and shift the medial surface of fixed frame 20 onto, then with a side coated with adhesive of crystal bar 1, snap in the exterior bayonet slot 11, directly shift both onto in conjunction with getting final product along the direction that draw-in groove need to bond.Unnecessary binding agent can flow out along guiding gutter 13, can not have influence on the bonding of photoconduction bar 3 and crystal bar 1.
Certainly, binding agent also can be coated in the side that the photoconduction bar that snaps in the inner card cage 12 is positioned at guiding gutter 13 tops, and the crystal bar that directly will snap in the exterior bayonet slot 11 is directly shifted both combinations onto along the direction that draw-in groove need to bond.
And, as can be seen from Figure 6, the length sum of crystal bar 1 and photoconduction bar 3 is greater than the width of fastener 10, and the length sum of crystal bar 1 and photoconduction bar 3 is less than the width of the inside spatial accommodation of fixed frame 10, be convenient to so bonding personnel and promote the crystal bar and carry out bondingly, and after bonding, be convenient to take out bonding good crystal bar and photoconduction bar.
Fig. 7 shows the crystal that utilizes said apparatus bonding PET detector of the embodiment of the invention and the flow process of photoconduction, in this embodiment, fastener and fixed frame are split-type structurals, then at first need to make up adhering device, and namely step S701's is fixed on fastener in the fixed frame; Then in step S702, in the crystal that needs are bonding or the photoconduction one snaps on the inner card cage of fastener, and it is pushed into the one side that fixed frame and inner card cage join, and one end and fixed frame are joined, and the other end is positioned on the guiding gutter of fastener; Fix after the crystal or photoconduction that needs bonding, in step S703, in the bonding crystal of needs or the bonding end coated with adhesive of photoconduction, binding agent can be coated in crystal or the photoconduction end that fixes, also can be coated in the photoconduction that is not fixed or the end of crystal, only should be noted that binding agent is infected with at draw-in groove to be got final product, in order to avoid dirty crystal or photoconduction; Then, in step S704, the photoconduction that needs are bonding or in the crystal another snap on the exterior bayonet slot, need bonding direction to promote along draw-in groove, utilize binding agent that crystal and photoconduction are alignd above guiding gutter bonding; And utilize guiding gutter to collect unnecessary binding agent.Bond complete, to be bonded dose solidifies a little, just can take off the good crystal of bonding-photoconduction bar.
Need to prove, although purpose of design of the present invention is crystal and the photoconduction of bonding PET detector, do not hinder with the present invention be applied to bonding other shapes less, be not easy to the bonding object of manual alignment; And also can fastener and fixed frame be set to integrative-structure, and guiding gutter is designed to engraved structure on the fixed frame; Perhaps the inner card cage in the fastener and fixed frame design are structure as a whole, and with exterior bayonet slot as can with the matching structure of the fastening combination of fixed frame, then detachable exterior bayonet slot and fixed frame fixing after and the gap that forms between the inner card cage just become the guiding gutter of collecting excess adhesive.These all are to some limited improvement and the distortion of the device of the crystal that is used for bonding PET detector and photoconduction on the basis of the embodiment of the invention; those skilled in the art are not difficult to obtain above-mentioned or other the technical scheme of distortion on the basis of above-described embodiment, these distortion all should belong to protection scope of the present invention.
As above in the mode of example apparatus and method according to crystal and the photoconduction for bonding PET detector of the present invention are described with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that the crystal that is used for bonding PET detector that proposes for the invention described above and the apparatus and method of photoconduction, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (8)
1. one kind is used for the crystal bar of bonding PET detector and the device of photoconduction bar, and comprise fastener and be used for holding the also fixed frame of fastening described fastener, wherein,
The degree of depth of described fixed frame is more than or equal to the height of described fastener;
Described fastener comprises that at least one pair of is used for fixedly holding V-arrangement or the zigzag draw-in groove of described crystal bar and described photoconduction bar, be provided with the guiding gutter that run through described fastener perpendicular with described draw-in groove direction between every pair of draw-in groove, the degree of depth of described guiding gutter is greater than the degree of depth of described draw-in groove; And,
Half of joining with described fixed frame in the every pair of draw-in groove is inner card cage, and second half is exterior bayonet slot,
The length of described crystal bar or described photoconduction bar is greater than the length of described inner card cage, and less than the length of described inner card cage and the width sum of described guiding gutter.
2. as claimed in claim 1 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
Described fixed frame is square or U-shaped, and the one side that described fastener is close in the described fixed frame and the draw-in groove of described fastener is perpendicular is fixed.
3. as claimed in claim 1 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
The length sum of described crystal bar and described photoconduction bar is greater than the width of described fastener; And,
The length sum of described crystal bar and described photoconduction bar is less than the width of the inside spatial accommodation of described fixed frame.
4. as claimed in claim 1 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
Corresponding being provided with for positioning convex and/or the location of fixing described fastener and fixed frame caved in respectively on described fastener and described fixed frame.
5. as claimed in claim 4 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
Described positioning convex and location depression evenly are arranged on bottom or the both sides of described fastener and described fixed frame.
6. as claimed in claim 1 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
Described fastener and described fixed frame are structure as a whole, and described guiding gutter is the engraved structure that runs through described fastener and described fixed frame.
7. as claimed in claim 1 for the crystal bar of bonding PET detector and the device of photoconduction bar, wherein,
The inner card cage of described fixed frame and described fastener partly is structure as a whole, described exterior bayonet slot partly is can be fastening in conjunction with demountable structure with described fixed frame, and described guiding gutter is the gap of self-assembling formation after described exterior bayonet slot and the fastening combination of described fixed frame and between the described inner card cage.
8. one kind is used for the crystal bar of bonding PET detector and the method for photoconduction bar, comprising:
Described fastener in each described device in the claims 1～4 is fixed in institute's fixed frame;
In the crystal bar that needs are bonding or the photoconduction bar one snaps on the inner card cage of described fastener, and it is pushed into the one side that described fixed frame and described inner card cage join, one end and described fixed frame are joined, and the other end is positioned on the described guiding gutter of described fastener;
In the bonding crystal bar of described needs or the bonding end coated with adhesive of photoconduction bar;
The photoconduction bar that needs are bonding or in the crystal bar another snap on the described exterior bayonet slot, need bonding direction to promote along described draw-in groove, utilize binding agent that described crystal bar and photoconduction bar are alignd above described guiding gutter bonding; And
Utilize described guiding gutter to collect unnecessary binding agent.
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| CN 201110121616 CN102217948B (en) | 2011-05-12 | 2011-05-12 | Device and method for sticking crystals and light guides of PET (position-emission tomography) detector |
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| CN109856664B (en) * | 2018-12-04 | 2020-12-01 | 山东麦德盈华科技有限公司 | PET detector with partial light guide not cutting |
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| CN1102886A (en) * | 1993-05-26 | 1995-05-24 | 住友电气工业株式会社 | Optical waveguide module and method of manufacturing the same |
| CN1621878A (en) * | 2003-11-27 | 2005-06-01 | 三美电机株式会社 | Optical waveguide module |
| CN101210981A (en) * | 2006-12-27 | 2008-07-02 | 日立电线株式会社 | Optical connector |
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| US7406243B2 (en) * | 2002-03-15 | 2008-07-29 | Nippon Electric Glass Co., Ltd. | Optical fiber array substrate and method for producing the same |
| JP2009122451A (en) * | 2007-11-15 | 2009-06-04 | Hitachi Chem Co Ltd | Optical connection structure |
| CN202194897U (en) * | 2011-05-12 | 2012-04-18 | 刘继国 | Device for adhering crystal bar and light guide bar of PET (Polyethylene Terephthalate) detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102886A (en) * | 1993-05-26 | 1995-05-24 | 住友电气工业株式会社 | Optical waveguide module and method of manufacturing the same |
| CN1621878A (en) * | 2003-11-27 | 2005-06-01 | 三美电机株式会社 | Optical waveguide module |
| CN101210981A (en) * | 2006-12-27 | 2008-07-02 | 日立电线株式会社 | Optical connector |
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Effective date of registration: 20160720 Address after: 276000, 100 meters south of Qingshan village, Li Town, Tancheng County, Shandong, Linyi Patentee after: Shandong Ahmed Ying Hua Technology Co. Ltd. Address before: Jiangning District moling streets integrity Avenue in Nanjing city Jiangsu province 211100 No. 899 building 6 room 504 Patentee before: Liu Jiguo |