CN202821407U - Computed tomography scanner and X-ray computed tomography (CT) device - Google Patents

Computed tomography scanner and X-ray computed tomography (CT) device Download PDF

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Publication number
CN202821407U
CN202821407U CN 201220516119 CN201220516119U CN202821407U CN 202821407 U CN202821407 U CN 202821407U CN 201220516119 CN201220516119 CN 201220516119 CN 201220516119 U CN201220516119 U CN 201220516119U CN 202821407 U CN202821407 U CN 202821407U
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CN
China
Prior art keywords
leading screw
lead screw
ray
flange
screw
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Expired - Lifetime
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CN 201220516119
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Chinese (zh)
Inventor
张帆
孙爽
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Canon Medical Systems Corp
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Toshiba Corp
Toshiba Medical Systems Corp
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Priority to CN 201220516119 priority Critical patent/CN202821407U/en
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Abstract

The utility model discloses a computed tomography scanner and an X-ray computed tomography (CT) device. The computed tomography scanner comprises a hoisting mechanism, a lead screw mechanism, a braking mechanism, wherein the hoisting mechanism is used for hoisting or going down a day plate, the lead screw mechanism is used for driving the hoisting mechanism to hoist and fall, and the lead screw mechanism comprises a lead screw and a nut which is placed on the lead screw in a sleeved mode to drive the hoisting mechanism. The braking mechanism is used for braking the lead screw, and a flange preventing the lead screw from axially moving away from the motive power input end of the lead screw is formed on the braking mechanism. Due to the fact that the flange preventing the lead screw from axially moving away from the motive power input end of the lead screw is formed on the braking mechanism, when an abnormal condition of lead screw fracture caused by rotation of a motor after the braking mechanism brakes takes place, the flange is capable of stopping the lead screw from moving away the motive power input end of the lead screw. Therefore, an abnormal condition that the day plate falls fast can be prevented from taking place.

Description

Bedroom platform and X ray CT device
Technical field
This utility model relates to a kind of armarium, relates in particular to a kind of platform and adopt the X ray CT device of this bedroom platform of getting into bed.
Background technology
X ray CT device be a kind of human body different tissues that is applied to X ray difference in attenuation characteristic, by the attenuating space distribution character of human body tissue to X ray, application of mathematical method obtains the armarium of faultage image through computer reconstruction.
Existing X ray CT device as shown in Figure 5, mainly comprise pallet 101, bedroom platform 102 etc., such as Fig. 6, shown in 7, bedroom platform 102 further comprises: fixed pedestal 103, screw mechanism 104, transmission pedestal 105, elevating mechanism 106 and day plate 107, screw mechanism 104 and elevating mechanism 106 are installed on the fixed pedestal 103, transmission pedestal 105 is installed on the nut 108 of screw mechanism 104, screw mechanism 104 drive nuts 108 move, and drive transmission pedestal 105 and move along the axial direction of the leading screw 109 of screw mechanism 104, move up and down thereby drive day plates 107 by elevating mechanism 106.
In said structure, the clutch end of leading screw 109 rotatably is installed on the fixed pedestal 103 by bearing 110, and the other end rotatably is installed on the arrestment mechanism on 113 by bearing 112.
For the ease of bearing 112 being installed in the through hole of arrestment mechanism 113, be matched in clearance between the through hole of the external diameter of bearing 112 and arrestment mechanism 113, bearing 112 can endwisely slip along the through hole of arrestment mechanism 113.
When bedroom platform 102 stops lifting, need to leading screw 109 be blocked by arrestment mechanism 113, make leading screw 109 can not continue rotation, thereby sky plate 107 is stopped at preposition.
Braked if arrestment mechanism 113 occurs, and the motor 114 of clutch end side that is installed in leading screw 109 is also when the abnormal conditions of rotating, leading screw 109 just might appear at the phenomenon of rupture of the part of close leading screw 109 power intake sides.At this moment, the breaking portion that just might cause leading screw 109 to away from the direction of leading screw power intake along the moving axially of leading screw 109, day plate 107 thereupon situation of fast-descending occurs.
The utility model content
This utility model proposes in order to address the above problem, and its purpose is, a kind of bedroom platform is provided, arrestment mechanism braked and motor also in rotation, thereby when the abnormal conditions of leading screw fracture are occured, can prevent that day plate from descending thereupon.
The bedroom platform of embodiment of the present utility model has:
Elevating mechanism carries out lifting or decline to the sky plate;
Screw mechanism drives described elevating mechanism and carries out lifting, described screw mechanism comprise leading screw and be set on this leading screw to drive the nut of described elevating mechanism;
Arrestment mechanism is braked described leading screw, is formed with on the described arrestment mechanism to prevent that described leading screw is to the axially movable flange of direction away from the power intake of described leading screw.
The brake that the bedroom platform of another embodiment of the present utility model, described arrestment mechanism have fixed block and be used for described screw mandrel is braked, described leading screw rotatably is installed on the described fixed block by bearing, and described flange is formed on the described fixed block.
The bedroom platform of another embodiment of the present utility model, described fixed block are formed be used to the through hole that described bearing is installed, and described flange is formed in the described through hole, and are positioned at the side away from the power intake of described leading screw of described bearing.
The bedroom platform of another embodiment of the present utility model, described flange are to form the tubular shape of circumferentially extending along described through hole in described through hole.
The X ray CT device of embodiment of the present utility model has:
Pallet,
Screw mechanism drives described elevating mechanism and carries out lifting, described screw mechanism comprise leading screw and be set on this leading screw to drive the nut of described elevating mechanism;
Arrestment mechanism is braked described leading screw, is formed with on the described arrestment mechanism to prevent that described leading screw is to the axially movable flange of direction away from the power intake of described leading screw.
The brake that the bedroom platform of another embodiment of the present utility model, described arrestment mechanism have fixed block and be used for described screw mandrel is braked, described leading screw rotatably is installed on the described fixed block by bearing, and described flange is formed on the described fixed block.
The X ray CT device of another embodiment of the present utility model, the brake that described arrestment mechanism has fixed block and is used for described screw mandrel is braked, described leading screw rotatably is installed on the described fixed block by bearing, and described flange is formed on the described fixed block.
The X ray CT device of another embodiment of the present utility model, described fixed block are formed be used to the through hole that described bearing is installed, and described flange is formed in the described through hole, and are positioned at the side away from the power intake of described leading screw of described bearing.
The X ray CT device of another embodiment of the present utility model, described flange are to form the tubular shape of circumferentially extending along described through hole in described through hole.
This utility model prevents that by forming at arrestment mechanism leading screw is to the axially movable flange of direction away from the power intake of leading screw, like this, arrestment mechanism braked and motor also the rotation, so that the abnormal conditions of leading screw fracture are when occuring, flange can block leading screw and move to the direction away from the power intake of leading screw, thus can prevent day plate thereupon the abnormal conditions of fast-descending occur.
Description of drawings
Fig. 1 is the structured flowchart of this utility model embodiment;
Fig. 2 is the structural representation of this utility model bedroom platform;
Fig. 3 is the structural representation of the bedroom platform driver element of Fig. 2;
Fig. 4 is the local enlarged diagram of Fig. 3;
Fig. 5 is existing X ray CT device structural representation;
Fig. 6 is the structural representation of bedroom platform among Fig. 5;
Fig. 7 is the cross section structure sketch map of bedroom platform drive part among Fig. 6.
The specific embodiment
Below, describe with reference to the accompanying drawings preferred embodiment of the present utility model in detail.
Fig. 1 is the structured flowchart of this utility model embodiment.
X ray CT device 1 shown in Figure 1 is the x-ray bombardment position that changes subject on one side, on one side to the subject X-ray irradiation, inner by the X ray back projection subject according to transmission, subject inside as the reconstituted device of image, by comprising for carrying out scanning area appointment image scanning, and the scanning motion of each action phase in the scan plan, finally obtain the image of subject inside.
Below, describe the structure of this X ray CT device 1 in detail.As shown in Figure 1, X ray CT device 1 comprises: the pallet G with opening OP; Carrying subject P also is inserted into bedroom platform (Wo Tai) B among the opening OP; By with the whole and bedroom platform B of the dialogue of device operator control pallet G, and the collection data for projection carries out the processing unit U that image reconstructs processing.
Bedroom platform B possesses the sky plate of bedroom platform driver element 2, bedroom platform driving control unit 3 and mounting subject P.Bedroom platform B is by the driving of the bedroom platform driver element 2 day plate that slides in the longitudinal direction, thereby the mounting subject is inserted into opening OP.Bedroom platform driver element 2 is by bedroom platform driving control unit 3 control driving timing and driving amounts.Corresponding with the bedroom platform control signal of exporting from processing unit U by the control that bedroom platform driving control unit 3 is carried out.In addition, during the release of bedroom platform driving control unit 3 in each action phase, the release signal is turned back to processing unit U.
Pallet G possesses pallet driver element 4 and pallet driving control unit 5.The driving of pallet driver element 4 is controlled driving timing and driving amounts with pallet driving control unit 5.Corresponding with the pallet control signal of exporting from processing unit U by the control that pallet driving control unit 5 is carried out.In addition, during the release of pallet driving control unit 5 in each action phase, the release signal is returned processing unit U.
X-ray tube 6 and X ray detection arrays 7 are set in the inside of pallet G.In addition, similarly, corresponding X-ray tube 6 arranges X ray control unit 8 and collimator 9 in the inside of pallet G, and corresponding X ray detection arrays 7 arranges data collection module 10.
X-ray tube 6 is to the subject X-ray irradiation.With being set up nigh collimator 9 range of exposures to be limited in cone beam X ray or fladellum X ray on subject width and the health direction of principal axis from the X ray of X-ray tube 6 irradiation.X-ray tube 6 usefulness are by tube voltage, tube current, the irradiation time X-ray irradiation of 8 controls of X ray control unit.8 pairs of X-ray tubes of X ray control unit 6 carry out the control corresponding with the X ray control signal of exporting from processing unit U.With the X ray transmission subject of this mechanism's irradiation, detect the X ray of transmission with X ray detection arrays 7.
For example, X ray detection arrays 7 is the x-ray detection device that is comprised of flasher and light emitting diode to be arranged the X-ray detector of a plurality of two dimensions on 2 directions of quadrature with array-like.Its shape is the circular shape centered by the focus of the X ray that occurs with X-ray tube.Be transformed to respectively detection signal with these X ray detection arrays 7 detected X ray with each x-ray detection device, collect data collection module 10.Data collection module 10 outputs to processing unit U to the detection signal of collecting, as the data for projection in the subject.The collection that data collection module 10 produces is regularly by the timing controling signal control from processing unit U output.
In processing unit U, be equipped with bedroom platform driving control unit 3, pallet driving control unit 5, X ray control unit 8, data collection module 10 output control signals, the system control unit 11 of output action end signal.In addition, as processing from the detection signal of data collection module 10 outputs and the device of image conversion, comprise pretreating device 12, reconstruct device 13, storage device 14, and display device 15.
12 pairs of data for projection that consist of with detection signal of pretreating device are implemented sensitivity compensating or the revisal of X ray intensity etc., reconstruct device 13 and utilize the decimal scale that reconstructs that mainly is called as Forlan Dao Kanpafa, the data for projection after the revisal is carried out back projection come reconstructing as view data in the subject.Together be stored in the storage device 14 by the ID of reconstituted view data and subject and name.Display device 15 for example is made of monitor and scan converter, reads by reconstituted view data from storage device 14 with scan converter, is transformed to the form consistent with monitor, on monitor showing as image in the reconstituted subject.
The control signal of system control unit 11 output is the corresponding signal of each action phase with X ray CT device 1.That is, although X ray CT device 1 until before showing image in the subject, is carried out the attributes such as name of subject ID and subject are attached to action phase on the image; Scanning area is specified and is used the image action phase; Determine that the condition of scanning at position of the scanning of head or abdominal part etc. sets action phase; The scan plan action phase; The various scanning motion stages, but consistent with this action phase and according to generating control signal from the input of device operator, output to the control unit of regulation.
This X ray CT device 1 enters into each operating state by the dialogue with device operator, finally scans the inner and desirable scope of subject with desirable scan method, and obtains the image of subject inside as the image with desirable attribute.Each control signal and release signal are sent in 11 pairs of these input equipment 16 of system control unit one by one, the dialogue of realization and device operator.
That is, in X ray CT device 1, at first, device operator is carried out the input of subject ID and subject name.Below, device operator is carried out scanning area and is specified the input of using image scanning.If specifying, scanning area finishes with image scanning, certain position of the head of input checking subject P, chest, abdominal part etc. then, in other words scan certain position, and then the flow process that obtains from scanning image of input, and scan method, reconstruct condition, show that two nuclear record conditions set the condition of scanning.After the setting of the condition of scanning, in the position of selecting, the scan plan of which scope of input scan etc.When the input scan plan, the input that the platform that begins to get into bed moves, thus the bedroom platform is moved to the sweep limits of having inputted.After this bedroom platform moves, carry out the input corresponding with each scan method.Whether if the end of scan, then whether input scans again, also have input to finish to check.Correspondingly carry out this a series of input with input equipment 16 and each action phase, input equipment 1 is in each action phase, in order to carry out the desirable action of device operator, the X ray CT device 1 of inputting for the setting that needs device operator is in the manually-operated machine interface.
Lower mask body is described in more detail the bedroom platform driver element 2 of this utility model bedroom platform B.
Fig. 2 is the structural representation of this utility model bedroom platform, and Fig. 3 is the structural representation of the bedroom platform driver element of Fig. 2, and Fig. 4 is the local enlarged diagram of Fig. 3.
Shown in Fig. 2,3, the bedroom platform driver element 2 of bedroom platform B has: fixed pedestal 21, elevating mechanism 22, screw mechanism 23 and arrestment mechanism 24.Elevating mechanism 22 is arranged on the fixed pedestal 21, is provided with day plate 25 at elevating mechanism 22.Screw mechanism 23 is arranged on the fixed pedestal 21, carries out lifting to drive elevating mechanism 22, thereby sky plate 25 is carried out lifting.Screw mechanism 23 comprises leading screw 231 and the nut 232 with driving elevating mechanism 23 that is set on the leading screw 231, one end of leading screw 231 rotatably is installed on the fixed pedestal 21 by clutch shaft bearing 26, and the other end is upper by the second bearing 27 rotatable installation arrestment mechanisms 24.
Shown in Fig. 3,4, arrestment mechanism 24 is arranged on the fixed pedestal 21, leading screw 231 is braked the brake 242 that arrestment mechanism 24 has the fixed block 241 that leading screw 231 is installed and is used for screw mandrel 231 is braked.Behind the power supply of cutting system, the motor that drives leading screw 231 rotations namely quits work, at this moment, the braking that needs 242 pairs of leading screws 231 of employing brake to be rotated, prevent that motor from quitting work rear leading screw 231 owing to the weight of bearing day plate 25 and being positioned in the subject on day plate 25 is rotated, thereby make day plate 25 remain on predetermined horizontal level.
In this utility model embodiment, shown in Fig. 3,4, fixed block 241 is formed with the through hole 28 that is used for installing the second bearing 27 of predetermined inside diameter, is formed with to prevent that the second bearing 27 is along the flange 29 that axially moves to the direction away from clutch shaft bearing 26 of leading screw 231 in this through hole 28.Flange 29 is positioned at the side away from clutch shaft bearing 26 of the second bearing 27.
Like this; if arrestment mechanism 24 has been braked; and the motor that is installed in the clutch end side of leading screw 231 is also rotating; so that the abnormal conditions of leading screw 231 fracture are when occuring; because flange 29 can block the second bearing 27 and move to the direction away from clutch shaft bearing 26; stoped the second bearing 27 to break away out from brake 242 1 with leading screw 231; support elevating mechanism 22 by this flange 29 as the stressed strong point; its plate 25 and lie in examinee on day plate 25; guarantee that a day plate 25 is unlikely to descend suddenly in this case thereupon, thereby can play the effect that well protection lies in the safety of the examinee on day plate 25.
In addition, flange 29 can be to form the tubular shape of circumferentially extending along through hole 28 in through hole 28, also can be the fan annular shape with predetermined arc, the height of flange 29 mainly satisfies can block the second bearing 27 and just impassable to the leading screw 231 generation interference of passing flange 29.
Those skilled in the art are easy to expect other advantage and alter mode.Therefore, this utility model is not limited to detail and the representational embodiment that illustrates and illustrate here with regard to wider aspect.Therefore, do not deviate from appending claims with and the situation of the spirit and scope of the general utility model concept that limits of equivalent under, can carry out various modifications.

Claims (8)

1. bedroom platform is characterized in that having:
Elevating mechanism (22) carries out lifting or decline to sky plate (25);
Screw mechanism (23) drives described elevating mechanism (22) and carries out lifting, and described screw mechanism (23) comprises leading screw (231) and is set in the nut (232) to drive described elevating mechanism (22) on this leading screw (231);
Arrestment mechanism (24) is braked described leading screw (231), is formed with on the described arrestment mechanism (24) to prevent that described leading screw (231) is to the axially movable flange of direction (29) away from the power intake of described leading screw (231).
2. bedroom platform as claimed in claim 1, it is characterized in that, the brake (242) that described arrestment mechanism (24) has fixed block (241) and is used for described screw mandrel (231) is braked, described leading screw (231) rotatably is installed on the described fixed block (241) by bearing (27), and described flange (29) is formed on the described fixed block (241).
3. bedroom platform as claimed in claim 2, it is characterized in that, described fixed block (241) is formed be used to the through hole that described bearing (27) are installed (28), described flange (29) is formed in the described through hole (28), and is positioned at the side away from the power intake of described leading screw (231) of described bearing (27).
4. bedroom platform as claimed in claim 3 is characterized in that, described flange (29) is for forming the tubular shape of circumferentially extending along described through hole (28) in described through hole (28).
5. X ray CT device is characterized in that having:
Pallet (G),
Elevating mechanism (22) carries out lifting or decline to sky plate (25);
Screw mechanism (23) drives described elevating mechanism (22) and carries out lifting, and described screw mechanism (23) comprises leading screw (231) and is set in the nut (232) to drive described elevating mechanism (22) on this leading screw (231);
Arrestment mechanism (24) is braked described leading screw (231), is formed with on the described arrestment mechanism (24) to prevent that described leading screw (231) is to the axially movable flange of direction (29) away from the power intake of described leading screw (231).
6. X ray CT device as claimed in claim 5, it is characterized in that, the brake (242) that described arrestment mechanism (24) has fixed block (241) and is used for described screw mandrel (231) is braked, described leading screw (231) rotatably is installed on the described fixed block (241) by bearing (27), and described flange (29) is formed on the described fixed block (241).
7. X ray CT device as claimed in claim 6, it is characterized in that, described fixed block (241) is formed be used to the through hole that described bearing (27) are installed (28), described flange (29) is formed in the described through hole (28), and is positioned at the side away from the power intake of described leading screw (231) of described bearing (27).
8. X ray CT device as claimed in claim 7 is characterized in that, described flange (29) is for forming the tubular shape of circumferentially extending along described through hole (28) in described through hole (28).
CN 201220516119 2012-10-10 2012-10-10 Computed tomography scanner and X-ray computed tomography (CT) device Expired - Lifetime CN202821407U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220516119 CN202821407U (en) 2012-10-10 2012-10-10 Computed tomography scanner and X-ray computed tomography (CT) device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220516119 CN202821407U (en) 2012-10-10 2012-10-10 Computed tomography scanner and X-ray computed tomography (CT) device

Publications (1)

Publication Number Publication Date
CN202821407U true CN202821407U (en) 2013-03-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220516119 Expired - Lifetime CN202821407U (en) 2012-10-10 2012-10-10 Computed tomography scanner and X-ray computed tomography (CT) device

Country Status (1)

Country Link
CN (1) CN202821407U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160805

Address after: Japan Tochigi

Patentee after: TOSHIBA MEDICAL SYSTEMS Corp.

Address before: Tokyo, Japan

Patentee before: Toshiba Corp.

Patentee before: TOSHIBA MEDICAL SYSTEMS Corp.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20130327