CN2879977Y - Digital X ray whole body imaging examination apparatus - Google Patents
Digital X ray whole body imaging examination apparatus Download PDFInfo
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- CN2879977Y CN2879977Y CN 200620004363 CN200620004363U CN2879977Y CN 2879977 Y CN2879977 Y CN 2879977Y CN 200620004363 CN200620004363 CN 200620004363 CN 200620004363 U CN200620004363 U CN 200620004363U CN 2879977 Y CN2879977 Y CN 2879977Y
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Abstract
The utility model relates to an apparatus for medical examination, in specific, a digital X ray whole-body imaging examination apparatus. By synchronous movement of an X ray tube and an X ray detector, a vertebral column of a patient is scanned and photo-shot during examination. Digital images are then acquired via computerized controlling system. The utility model has the advantages of easy and convenient utilization, efficient scanning, saving of time and energy. The utility model realizes digital diagnosis and treatment in the true sense, images can be send to distant places by communication networks for diagnostic physicians to conduct long-distance consultations. Additionally, by utilization of thin fan-shaped X ray for scanning and photo-shooting, radioactive dosage during examination is greatly reduced, both patients and medical staffs are effectively protected.
Description
Technical field
This utility model relates to a kind of medical inspection device, is a kind of digitized whole body X-ray imaging detector specifically.
Technical background
From big catastrophic event such as earthquake, big flood, wars, to accidents such as little traffic accident, traumatic injurys, can find out that on-the-spot timely diagnosis and treatment are most important to patient's life security, when generally diagnosing at the scene, all need to carry out as early as possible general physical checkup, judge the state of an illness, make correct traumatic condition and handle, traditional X-ray photo-beat sheet equipment inefficiency will be done repeatedly film making to general physical checkup, and have a long shortcoming of slice time, the incompatibility emergency quick general physical checkup.
The utility model content
This utility model has overcome above-mentioned shortcoming, and a kind of easy and simple to handle, digitized whole body X-ray imaging detector that can be Polaroid is provided.
The technical scheme in the invention for solving the technical problem is: comprise electric control system and scanning means, described scanning means comprises a carrying bed and is separately positioned on the x-ray pipe and the detector of the bed surface above and below of described carrying bed, described x-ray pipe and detector relative fixed, described x-ray pipe is provided with the slit light concentrator, and an electrical control gear and a control rack all are electrically connected respectively at described scanning means.
Described x-ray pipe and detector can drive by a driving device, move along described bed surface is parallel.
The scanning area of described bed surface can be provided with the fine plate of carbon.
Described driving device can comprise that a scan module, cog belt are fixedlyed connected with described pillar with one and with the contiguous block of described cog belt to engagement, the output shaft of described scan module drives described cog belt cycle rotation.
Described carrying bed can comprise a firm banking, x-ray pipe and detector are connected and fixed by a pillar, described detector is arranged on the bottom of described bed surface, and fixedly connected with described pillar by a contiguous block, described x-ray Guan Yuyi curved thick stick is fixedly connected, and fix by the top of described curved thick stick and pillar, the bottom of described pillar is provided with a pulley, and can slide along the guide rail that is fixed on the firm banking.
Panel with can be electrically connected by described electrical control gear, and control described bed surface parallel moving on load plane.
Also can be set with a manual control panel on the side of described carrying bed surface.
The bottom of described firm banking can be provided with at least four amortisseurs.
This utility model comprises electric control system and scanning means, described scanning means comprises a carrying bed and is separately positioned on the x-ray pipe and the detector of the bed surface above and below of described carrying bed, described x-ray pipe and detector relative fixed, described x-ray pipe is provided with the slit light concentrator, and an electrical control gear and a control rack all are electrically connected respectively at described scanning means.This utility model is treated the inspection patient by the same moved further of described x-ray pipe and detector and is carried out scanning shoot, and the result who takes is realized digital image by Computer Control Unit, easy and simple to handle, scan efficiency is high, time saving and energy saving, and scanning process is fully by microcomputer control, and scanogram directly enters computer, carrying out image by computer generates and analyzes, really realize the digitized diagnosis and treatment, can utilize communication network teletransmission image, but diagnostician's remote medical consultation with specialists.And, owing to adopt thin fan-shaped x-ray to carry out scanning shoot, reduced x-ray irradiation dose in the film making process greatly, effectively protected patient to be checked and staff's health safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the structural representation of detector in this utility model
Fig. 3 is X-ray bulb and a light concentrator structural representation in this utility model
The specific embodiment
As shown in Figure 1, this utility model comprises electric control system and scanning means, described electric control system is used for the work of the described scanning means of whole control, and the image that described scanning means obtains handled, described scanning means mainly comprises a carrying bed, the x-ray pipe, detector and driving device, described carrying bed comprises a bed surface 1 and a firm banking 2, four drift angle places, the bottom of described firm banking are fixed by four amortisseurs 4 and ground, described bed surface 1 is supported on the top of described firm banking 2, and by the panel 3 on the side that is arranged on described bed surface 1, control described bed surface 1 parallel moving on load plane, the staff can regulate the position of scanning film making by panel 3.Described bed surface adopts carbon fibre material to make, and helps X ray and passes bed surface and be detected device and receive, and the attenuation equivalent of carbon fiber board bed surface is about 0.9mmAl.
Described x-ray pipe 7 is arranged on the top of described bed surface 1, corresponding detector 8 is arranged on the bottom of described bed surface 1, described x-ray pipe connects the top that curved thick stick 10 is fixed on a pillar 9 by one, described detector is fixed by a connecting device 11 and described pillar 9, the thin fan-shaped x-ray that described x-ray pipe 7 sends passes tested patient and bed surface 1 is radiated on the described detector 8, detector and x-ray pipe are done left and right sides scanning motion jointly, according to most of people's height, swash width is set is not less than 1900mm; Scanning speed and distance can be according to scanning position different, set by computer software, scanning speed is 100mm/s～200mm/s usually.X-ray tube focus to detector distance is 1000mm.The bottom of described pillar 9 is provided with a pulley 13, and slides on the guide rail 12 that can be provided with at the edge of described firm banking 2, make scanning motion steadily, evenly, non-jitter, so the processing of guide rail and installation accuracy require than higher.Scanning bed bed surface to possess move flexibly, fixing firm ability, be convenient to the wounded or patient's bunk bed, the mobile para-position and the fixing film making of film making, mobile bed surface wants to bear 170 kilograms power and distortion (downwards) less than 5mm.
Described driving device comprises that a scan module 14, cog belt 15 and one and described pillar 9 are to being fixedly coupled piece 16, described scan module 14 fixes with described carrying bed, output shaft is meshed with described cog belt 15 by a gear, make described cog belt 15 parallel moving, described contiguous block 16 also is meshed with described cog belt 15, described cog belt 15 parallel mobile in, drive pillars 9 parallel moving by described contiguous block 16.
Electric control system 17 be positioned at movable base above, next-door neighbour's synchronous scanning actuating device, be used for the work of gated sweep device, comprise the motion of controlling described scan module 14, or by connecting parallel the moving of the described bed surface 1 of a foot switch 18 controls, control rack 19 comprises energy storage high pressure and power supply, they are positioned at scanning bed next door, electric control system, be image collection and processing system 20 be positioned at control rack 19 above, also can be positioned over the adjacent locations or the room that have with a certain distance from carrying bed.
Computer system is the control centre of this device, when needs are photographed inspection to the patient, at first set up medical record information, equipment is under computer system control, at first starting high tension generator powers up to bulb, when bulb reaches when being ready to expose, start scanning machinery, make the synchronous scanning campaign from the top down of bulb and detector; When mechanical scanning speed reaches when stablizing, begin exposure, X ray forms thin fan beam by light concentrator during this period, passes patient's tested position, injects the entrance window of detector; Detector is under computer system control, with the X ray conversion of signals is the signal of telecommunication, each horizontal electrical signal that to be gathered by data acquisition unit is delivered to electronics component and is become digital signal, the digital signal repeated transmission is delivered to computer, after scanned tested position treats that the piece image collection is finished, computer system is carried out the data reconstruction process, stop exposure and mechanical movement simultaneously, image after the processing shows on computer screen, and file automatically, machinery return back to bulb and detector the original position of scanning simultaneously, prepares image acquisition next time.
Described electric control system, the exposure three's of the motion of gated sweep machinery, the image acquisition of detector system and X-ray generator is the key of line sweep imaging mode synchronously.When scanning motion reached uniform and stable rapidly, detector carried out image acquisition at once, X-ray generator exposure simultaneously; After the image acquisition of detector was finished, X-ray generator stopped exposure simultaneously, and scanning motion must stop this moment as early as possible; When image capturing system carried out reconstruction process to the view data that collects, scanning motion must be carried out the motion return as early as possible, for film making scanning is next time got ready.The coordination of these actions is mainly realized by electric control system by computer.
Receive the order of collecting image of computer when electric control system after, take corresponding electrical action, the scanning motion control, the startup X-ray generator that start film making are prepared exposure, after computer receives standby ready signal, send detector data collection and exposure instruction, scan, exposure and data acquisition, after data acquisition finishes, computer sends and stops scanning and stop the exposure instruction, electric control system is taked corresponding electrical action, scanning motion is stopped immediately, and make motion return back to initial position, prepare film making once more.
In addition, electric control system also possesses the instruction that receiving computer sends, and realizes the stepwise operation of the detector scanning motion under the mobile bed surface, finishes the synchronous light path adjustment of system and the para-position control of film making position; Realization makes the movable and motion locking of bed surface to the motor control of mobile bed surface by foot switch control electric control system, makes things convenient for about the wounded and the fixed position film making; Electric control system itself also has the spacing control of motion and the control of scanning motion speed.
The groundwork of part is exactly the design of the control sequence of electric control system, the design and the manufacturing of control circuit.Make electric control system have the control command of reception and feedback computer, carry out functions such as power supply control, scanning motion control, exposure control.
The scanning speed of whole gatherer process is constant, the size of film making is determining the length of sweep time, for example the wounded to 1.8 meters of heights do the whole body film making, with the velocity scanning of 150mm/s, approximately need 15 seconds time to obtain a width of cloth patient whole body X-ray digitized video.
The generating means of described X ray comprises described x-ray pipe 7 and the high tension generator that is arranged in the described X-ray generator 19, also comprises light concentrator and bulb fork.
High tension generator is the device that is used for producing the Constant Direct Current high pressure and supplies with x-ray tube component through high tension cable, it is the vitals of X-ray generator, for quality and the stationarity that guarantees X ray, adopt high-frequency and high-voltage generator, high pressure range is 20KV～90KV, and maximum current is 64mA.High tension generator close parameter by the computer software setting.Reliability is than higher.High tension generator mainly comprises: microprocessor, pressure-oil tank, AC/DC, high-frequency inverter, voltage stabilization and current stabilization circuit, high-tension terminal, battery charging and discharging panel, patch panel and earth lead etc.
Described x-ray pipe 7 is illustrated as shown in Figure 3 with the installation of light concentrator 21, light concentrator 21 is made up of bundle tabula rasa, collimating slit 22 and light concentrator cover, and by on fixedly connected 23 light-emitting window that is fixedly mounted on X-ray bulb 7, collimating slit 22 is made by stereotype, the tubular construction of light concentrator 21 guarantees to form fan-shaped arrow beam of light, the shell of light concentrator 21 is surrounded by the stereotype protection, to guarantee that ray does not have leakage to other direction.X ray forms effectively thin fan-shaped x-ray beam through light concentrator, is surrounded by the stereotype protection outward, is lower than the environmental protection standard that China leaks about X-ray equipment to guarantee ray to the leakage of other direction.The slit sizes of the front end collimating slit of light concentrator is 100mm * 1.0mm, and the position of collimating slit can be regulated, so that shine exactly on the entrance window of detector 8 through the X ray of light concentrator, and both centers overlap.The adjustment of light concentrator 21 collimating slits is bigger to the image influence of gathering, and the quality of X ray collimation will directly influence the count value and the picture quality of image.
The light concentrator cover is the tubular construction of being made by fiberglass, be divided into two sections of front and back, because bulb is positioned in the light concentrator cover, in order to solve the heat radiation of bulb in the use, the rear portion of bulb is equipped with aerofoil fan in the light concentrator cover, on the anterior sidewall of light concentrator cover, have louvre, be used to form the wind path of heat radiation.The groundwork of this part is the design of internal structure and the radiation proof shielding design of light concentrator, wants at last in use to accomplish conscientiously that light concentrator can reduce scattered rays and do not have the ray of leakage again, the light concentrator cover wants to guarantee that the bulb heat radiation is good.Also have a bulb fork, do not indicate among the figure, three aerofoil fans are equipped with at the rear portion of described bulb fork, be used to protect the X ray assembly and forced heat radiation is provided.The bulb fork is divided into two sections of front and back, and in the middle of it was fixed on bulb, the rear end linked to each other with curved thick stick.
In actual the use, the suggestion high pressure range is 20KV～80KV, and maximum current is 60mA.
High tension generator has a special-purpose debugging software, and the high voltage control in the system transmits order by computer by serial line interface and realizes.Working procedure in the high tension generator guarantees that when every single is photographed the selection of technical conditions can not surpass the rated capacity of X-ray tube.
X-ray tube also is bulb, and X-ray tube is made up of shell and tube core, and tube core is a kind of precision, frangible fine vacuum glass devices of constructing, and it is placed in the oil-overflow protection shell, and the effect of tube core is to convert electric energy to the X line.What X-ray production apparatus adopted is bifocus fixed anode X-ray tube.The anode of X-ray tube tube core is a rhenium-tungsten alloy dish, therefore just is fixed on the local area of target surface by the position of electronic impact, rather than is evenly distributed on the whole target surface.There are two cables to link to each other between bulb and the high tension generator, each one of negative electrode and anode high voltage cable.When new bulb is loaded into, because bulb parameter inconsistent, carry out the parameter correction of high tension generator.Because bulb is valuable parts, during utilization protective measure must be arranged.Bulb is owing to use for a long time continuously heat very big, and its thermal capacity drops to 20% warning can occur when following.Use and be provided with and improperly all can report to the police, must investigate thoroughly that reason is just to continue use this moment.
The focus of X-ray tube is 2.0mm in the present embodiment, and more special requirement is that maximum current is less than 64mA to bulb, can continuous firing reach 3 seconds under maximum conditions, and keeps ray stability and repeated.
The filtration of x-ray tube component is not less than the 1.5mmAl equivalent.
Total filtration of X-ray equipment is not less than the 2.5mmAl equivalent.
Described detector 8 is structurally by forming with lower member: 1. X ray is popped one's head in; 2. signal acquisition circuit; 3. low-tension supply combination; 4. data acquisition unit.Wherein X ray probe and signal acquisition circuit are encapsulated in the aluminium alloy box of a cuboid together, are called as detector; Low-tension supply combination then is encapsulated in separately in the metal square box with good heat radiating function; Data acquisition unit is that a data card places computer, comes the view data of pick-up probe.
Detector 8 comprises sealed aluminum film, crystal array, signal acquisition circuit three partly.The structure of detector as shown in Figure 2.Detector is the aluminum alloy chamber of a sealing, front panel is the lead-antimony alloy material with shielding action, its on the upper side portion be a lead collimator A, there is sealed aluminum film B the collimator rear end, below the aluminum film crystal array C, its lead-out wire connects signal acquisition circuit D, and the back also has A/D change-over circuit, buffer, communication interface.
X ray sees through tested patient's throwing and shines on the probe, behind collimating device collimation, pass the sealed aluminum film, arrive crystal array, crystal is converted to the signal of telecommunication with X ray, and the signal acquisition circuit collection by its rear end is converted to digital signal through A/D, deposit buffer in, the Digital Image Data in the buffer is sent to computer by communication interface circuit.
The critical piece of detector 8 is exactly a strip array of being made up of crystal unit, the signal of each crystal unit, a pixel as image, with 14 byte representations, the sensitive area of each crystal unit is identical basically, so the spatial resolution in the whole measured zone of detector is consistent.It is fixing that signal acquisition circuit is close to probe, and it is made up of following functional unit: controller, adapter and power-supply system.
Controller comprises: signal imitation treatment circuit, 16 analog/digital converters and FPGA control circuit.
Analog processing circuit is used for read output signal and integrated signal under the control of Programmable Logic Device instruction.
It is digital code that analog/digital converter is used for analog signal conversion, so that write among the dynamic memory DRAM of adapter.
Programmable Logic Device can be finished following function:
1. make probe multichannel linear array synchronous working;
2. digital information can be write among the DRAM of adapter;
3. the signal that receives is delivered on the microcomputer through adapter;
4. detect power supply;
5. test probe circuit;
6. test adapter DRAM.
Also be provided with capacity in addition and be linage-counter that 16 controller state depositor and frame length write usefulness etc.
On acquisition system, be provided with plug, so that join: can be connected: connect power supply with external device (ED); Data line-link to each other with the data acquisition unit of computer; In case of necessity, connect external sensor (RS485).
The distribution, electrical control and the high tension generator parts that comprise complete machine in the control rack 19 constitute the control rack.
The rack left rear side is the electrical power distribution part, and binding post, air switch and catalyst etc. are housed; After distributing, distribution is sent to high tension generator and scanning main frame.The power supply of this machine is single-phase 220V, and power is 10KVA, and switch is located at the rack top.The rack bottom is equipped with high-frequency and high-voltage generator.Electric controling part is installed on the upper baffle plate of rack.Its function is: 1. according to the signal from the technical work station, gated sweep campaign; 2. report the detection signal of each on off state to computer; 3. realize manually by the key control motor; 4. make the motion parts outage in case of necessity.
Can also manual control button be set in the positive front of bulb cover, can control moving up and down of lifting column by the operator, so that the doctor is to patient's para-position, the left and right sides scanning motion of control detector.During remote control scanning, control through serial port " com1 " by computer.
Described electric control system comprises technical work station, manual control box and the user-selected outut device of being made up of computer and application software.
Technical work stands in and finishes data acquisition, image reconstruction and Digital Image Processing under the computer control.As sweep start, stop, connecting that high pressure, rotating anode rotate, control exposure etc.Be used for the online detection of duty and fault alarm in addition, after scanning is finished, finish date processing, and display image etc.The technical work station can provide case history to file, inquire about, and the condition of scanning is selected, scan control, and pictorial display, diagnosis report are write, are printed and required basic function when diagnosing.
Described manual control box also claims the high tension generator control box, is the device of opening and closing high tension generator on control station.Manual control box has two buttons.The cable that the high tension generator control box is drawn respectively with high tension generator, control rack link to each other with computer.The exposure control of bulb and high tension generator kV and mA set and finish by software by computer.
Also be provided with talkback unit on manual control box, audio amplifier is installed in the diagnosis room.When needs are talked to the patient, will step on foot switch, otherwise the staff in the operation room can not hear.
This utility model can directly adopt the method for digital image that the patient is carried out medical examination, and it has overcome the ineffective shortcoming of traditional X-ray photo-beat sheet equipment, and has following characteristics:
1. easy and simple to handle, time saving and energy saving: the Direct Digital film making, only need to press gently several mouse and keyboards down, realized the film making of cheap no filmization, operator need not remove to load and unload film; Need not remove to load and unload film magazine; More do not need to develop photographic film, only need several seconds to time a few minutes, operator are thoroughly freed from loaded down with trivial details working procedure, alleviated staff's burden, improved labor efficiency from the screen slice of making film.In addition, equipment and the waste liquid that develops photographic film saved in the film making of no filmization, realized the film making of environment-friendly type.
2. digitized: the line sweep film making of X line machine is fully by microcomputer control, and scanogram directly enters computer, carries out image by computer and generates and analyze.
3. low dosage; Adopt digitized line sweep direct imaging technology; reduced film making dosage greatly; general film making condition is 20kV-80kV, 1mA-60mA, 2.5S; patient's radioactive dose is about 20uGy; and it is lower to the radiation dose of the suffered scattered rays of staff on next door; like this, effectively protected staff's health safety.
4. but digitized remote medical consultation with specialists: the image of Direct Digitalization can utilize communication network teletransmission image, but diagnostician's remote medical consultation with specialists.
More than digitized whole body X-ray imaging detector provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. digitized whole body X-ray imaging detector, it is characterized in that: comprise electric control system and scanning means, described scanning means comprises a carrying bed and is separately positioned on the x-ray pipe and the detector of the bed surface above and below of described carrying bed, described x-ray pipe and detector relative fixed, described x-ray pipe is provided with the slit light concentrator, and an electrical control gear and a control rack all are electrically connected respectively at described scanning means.
2. digitized whole body X-ray imaging detector according to claim 1 is characterized in that: described x-ray pipe and detector drive by a driving device, move along described bed surface is parallel.
3. digitized whole body X-ray imaging detector according to claim 2, it is characterized in that: described driving device comprise that a scan module, cog belt are fixedlyed connected with described pillar with one and with the contiguous block of described cog belt to engagement, the output shaft of described scan module drives described cog belt cycle rotation.
4. according to claim 1 or 2 or 3 described digitized whole body X-ray imaging detectors, it is characterized in that: the scanning area of described bed surface is provided with the fine plate of carbon.
5. according to claim 1 or 2 or 3 described digitized whole body X-ray imaging detectors, it is characterized in that: described carrying bed comprises a firm banking, x-ray pipe and detector are connected and fixed by a pillar, described detector is arranged on the bottom of described bed surface, and fixedly connected with described pillar by a contiguous block, described x-ray Guan Yuyi curved thick stick is fixedly connected, and fix by the top of described curved thick stick and pillar, the bottom of described pillar is provided with a pulley, and can slide along the guide rail that is fixed on the firm banking.
6. according to claim 1 or 2 or 3 described digitized whole body X-ray imaging detectors, it is characterized in that: a panel and described electrical control gear are electrically connected, and control described bed surface parallel moving on load plane.
7. according to claim 1 or 2 or 3 described digitized whole body X-ray imaging detectors, it is characterized in that: also be set with a manual control panel on the side of described carrying bed surface.
8. digitized whole body X-ray imaging detector according to claim 5, it is characterized in that: the bottom of described firm banking is provided with at least four amortisseurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620004363 CN2879977Y (en) | 2006-02-24 | 2006-02-24 | Digital X ray whole body imaging examination apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620004363 CN2879977Y (en) | 2006-02-24 | 2006-02-24 | Digital X ray whole body imaging examination apparatus |
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| CN2879977Y true CN2879977Y (en) | 2007-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620004363 Expired - Fee Related CN2879977Y (en) | 2006-02-24 | 2006-02-24 | Digital X ray whole body imaging examination apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151138A (en) * | 2011-03-30 | 2011-08-17 | 北京航天中兴医疗系统有限公司 | Digital gynaecological radiography inspector and gynaecological radiography method |
| CN107260127A (en) * | 2017-05-25 | 2017-10-20 | 韩永来 | A kind of new medical image trap setting |
| CN112754507A (en) * | 2021-01-22 | 2021-05-07 | 上海涛影医疗科技有限公司 | Imaging device through slit scanning |
| WO2022156537A1 (en) * | 2021-01-22 | 2022-07-28 | 上海涛影医疗科技有限公司 | Scanning imaging system and method based on slit x-rays |
-
2006
- 2006-02-24 CN CN 200620004363 patent/CN2879977Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151138A (en) * | 2011-03-30 | 2011-08-17 | 北京航天中兴医疗系统有限公司 | Digital gynaecological radiography inspector and gynaecological radiography method |
| CN107260127A (en) * | 2017-05-25 | 2017-10-20 | 韩永来 | A kind of new medical image trap setting |
| CN112754507A (en) * | 2021-01-22 | 2021-05-07 | 上海涛影医疗科技有限公司 | Imaging device through slit scanning |
| WO2022156537A1 (en) * | 2021-01-22 | 2022-07-28 | 上海涛影医疗科技有限公司 | Scanning imaging system and method based on slit x-rays |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20110224 |