CN210249868U - Beam limiter and X-ray machine - Google Patents
Beam limiter and X-ray machine Download PDFInfo
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- CN210249868U CN210249868U CN201920676555.6U CN201920676555U CN210249868U CN 210249868 U CN210249868 U CN 210249868U CN 201920676555 U CN201920676555 U CN 201920676555U CN 210249868 U CN210249868 U CN 210249868U
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Abstract
The utility model provides a beam limiter and an X-ray machine, wherein the beam limiter comprises an adjustable reflector base and a positioning tool matched with the adjustable reflector base, and the adjustable reflector base comprises a reflector, an upper top plate, a front panel, a bearing piece, a fixed bracket, a connecting piece, a telescopic supporting piece and a traction piece; the location frock includes: location core and location frock base. The utility model discloses can improve the simple operation nature of adjusting the reflector, improve the position precision of reflector, improve structural strength and reduce cost.
Description
Technical Field
The utility model relates to the field of medical equipment and radiation medical treatment, especially, relate to a beam limiter and X-ray machine.
Background
An X-ray generating device is a device capable of generating X-rays for clinical diagnosis and treatment. The X-ray generating device mainly comprises a high-voltage generator, a bulb tube and a beam limiter. The beam limiter is usually disposed below the bulb, and the X-rays emitted from the bulb at high voltage pass through the beam limiter and irradiate on the object to be measured, so as to diagnose and treat the object to be measured.
The beam limiter is also called as a 'wire covering device', 'optical reducing device' or 'beam splitter', and mainly has the following functions:
a. the irradiation field is limited, so that the dose of the patient and the operator is as small as possible;
b. the area generating secondary rays is reduced, and the perspective and the shooting definition are improved;
c. the leakage rays are blocked as much as possible.
Therefore, the beam limiter is an indispensable important component in this field.
The beam limiter generally comprises a housing, a field of view lamp, a reflector and a movable lead blade. Because the X-ray is invisible ray, whether the opening size of the movable lead leaf meets the actual requirement cannot be predicted, a visual field lamp is arranged in the beam limiter as a point light source to simulate the position of the focus of the X-ray tube, the light is reflected to the part to be irradiated through the reflector, the irradiation field of the visible ray is used for predicting the irradiation field of the X-ray, and therefore the opening degree of the movable lead leaf can be adjusted according to the required irradiation field. In order to enable the simulated light irradiation field to accurately reflect the X-ray irradiation field, the positions of an X-ray focus, a point light source and a reflector are important, and the position relationship of the three is as follows: the point light source and the X-ray focus must be positioned symmetrically with respect to each other with the mirror as a central axis of symmetry, as shown in fig. 1.
In the existing beam limiter, the reflector is generally fixed, that is, a non-adjustable reflector holder is adopted, and the beam limiter mainly comprises a reflector, a reflector fixing and mounting bracket and a fixing bracket with an inclined plane. The fixed support with the inclined plane is manufactured by machining an aluminum alloy through a numerical control milling machine or bending a metal plate. The fixed angle precision of the fixed support manufactured by adopting the aluminum alloy through the numerical control milling machine is higher, but the processing cost is too expensive; the fixed bolster that adopts the panel beating to bend the preparation, although the cost is lower relatively, has reduced the precision of fixed angle, very easily influences the installation of field of vision lamp for the field of vision lamp can not reach the requirement precision of the wild uniformity of light, and adopts its simple operation nature of fixed reflector lower.
Therefore, it is necessary to develop a beam limiter and an X-ray machine to improve the operation convenience of adjusting the reflective mirror, improve the position accuracy of the reflective mirror, and reduce the cost.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcoming of the prior art, the utility model aims to provide a beam limiter and X-ray machine for solve among the prior art fixed reflector the simple operation nature low, the lower, the higher problem of cost of position precision of reflector.
In order to achieve the above objects and other related objects, the present invention provides a beam limiter, which comprises an adjustable mirror base and a positioning fixture matched with the adjustable mirror base; wherein the content of the first and second substances,
the regulation formula speculum seat includes reflector, goes up roof, front panel and:
the bearing piece comprises a bearing piece first surface and a bearing piece second surface which are arranged oppositely so as to be connected with the reflector through the bearing piece first surface;
the fixed support comprises a fixed support bottom plate and a fixed support side plate connected with the fixed support bottom plate, and the fixed support bottom plate is fixedly connected with the upper top plate;
the connecting piece comprises a connecting piece bottom plate and a connecting piece side plate connected with the connecting piece bottom plate, the connecting piece bottom plate is fixedly connected with the second surface of the bearing piece, and the connecting piece side plate is movably connected with the fixed support side plate so as to adjust the position of the bearing piece through the connecting piece;
the telescopic supporting piece is positioned between the fixed support and the connecting piece, is in contact with the fixed support bottom plate and the connecting piece bottom plate, and supports the fixed support and the connecting piece through the telescopic supporting piece;
the traction piece is connected with the front panel and the connecting piece bottom plate so as to adjust the position of the connecting piece through the traction piece;
the location frock includes:
the positioning core comprises a positioning core inclined plane so as to position the reflector through the positioning core inclined plane;
the positioning tool base comprises an accommodating space for accommodating the adjustable reflector base, so that the positioning tool base is fixedly connected with the upper top plate.
Optionally, the adjustable mirror bases are symmetrically distributed, and the number of the connecting pieces, the number of the telescopic supporting pieces and the number of the traction pieces respectively range from 2 to 5.
Optionally, the connecting piece side plate further comprises a connecting piece side plate protruding portion, and the fixed bracket side plate further comprises a groove or a through hole for accommodating the connecting piece side plate protruding portion; the connecting piece bottom plate further comprises a connecting piece bottom plate through hole, and the traction piece is connected with the connecting piece through the connecting piece bottom plate through hole.
Optionally, the fixed bracket side plate further comprises a fixed bracket side plate through hole, the traction piece penetrates through the fixed bracket side plate through hole to be connected with the front panel, and the position of the fixed bracket side plate through hole is lower than the contact position of the traction piece and the connecting piece bottom plate.
Optionally, the connection mode of the reflector and the bearing piece comprises one or a combination of bonding and buckling connection; the connecting mode of the fixed support and the upper top plate comprises one or a combination of bonding, welding, riveting, buckling connection, pin connection and threaded connection; the connecting mode of the connecting piece and the bearing piece comprises one or a combination of bonding, welding, riveting, buckling connection, pin connection and threaded connection; the connecting mode of the connecting piece and the fixed bracket comprises a shaft connection; the connection mode of the traction piece and the front panel comprises one or a combination of buckle connection and threaded connection, and the connection mode of the traction piece and the connecting piece comprises one or a combination of bonding, welding, riveting, buckle connection, pin connection and threaded connection.
Optionally, the inclined angle of the positioning core inclined plane ranges from 10 ° to 80 °.
Optionally, the positioning tool further comprises a support rod, an accommodating space is formed between the adjacent support rods, the support rod is fixedly connected with the upper top plate, and the positioning tool base further comprises a groove for accommodating the positioning core.
Optionally, the telescopic support comprises a torsion spring; the carrier comprises an acrylic plate; the traction member comprises a steel wire rope.
The utility model also provides an X-ray machine, the X-ray machine includes above-mentioned beam limiting device.
As described above, the utility model discloses a beam limiter and X-ray production apparatus provides including adjusting formula reflector seat and with adjusting formula reflector seat assorted location frock, can improve the simple operation nature of adjusting the reflector, improve the position accuracy and the reduce cost of reflector.
Drawings
Fig. 1 is a schematic structural diagram illustrating a simulated light irradiation field principle of a beam limiter in the prior art.
Fig. 2 is a schematic structural view of the adjustable mirror base of the present invention.
Fig. 3 is a schematic structural view of the adjustable mirror mount of fig. 2.
Fig. 4 is a schematic view of the adjustable mirror base of the present invention for positioning.
Fig. 5 is a flow chart of the adjusting beam limiter of the present invention.
Description of the element reference numerals
101 upper top plate
102 acrylic plate bearing piece
103 porcelain eye
104 sheet metal fixing bracket
105 torsion spring
106 steel wire rope
107M 3 gasket
108M 3 adjusting screw
109 front panel
110E type clamp spring
111 mirror
112 sheet metal connecting piece
113 wire rope fastener
114 locknut
115 eye nut
201 positioning core
202 positioning tool base
203 support rod
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 2 to 5. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 2 to 4, the utility model provides a beam limiter, which comprises an adjustable reflector base and a positioning tool matched with the adjustable reflector base; wherein the content of the first and second substances,
the adjustable reflector base comprises a reflector 111, an upper top plate 101, a front panel 109 and:
the bearing comprises a bearing first surface and a bearing second surface which are arranged oppositely so as to be connected with the reflector 111 through the bearing first surface;
the fixing support comprises a fixing support bottom plate and a fixing support side plate connected with the fixing support bottom plate, and the fixing support bottom plate is fixedly connected with the upper top plate 101;
the connecting piece comprises a connecting piece bottom plate and a connecting piece side plate connected with the connecting piece bottom plate, the connecting piece bottom plate is fixedly connected with the second surface of the bearing piece, and the connecting piece side plate is movably connected with the fixed support side plate so as to adjust the position of the bearing piece through the connecting piece;
the telescopic supporting piece is positioned between the fixed support and the connecting piece, is in contact with the fixed support bottom plate and the connecting piece bottom plate, and supports the fixed support and the connecting piece through the telescopic supporting piece;
a traction member connected to the front panel 109 and the connector base plate to adjust the position of the connector by the traction member;
the location frock includes:
a positioning core 201, the positioning core 201 comprising a positioning core inclined plane to position the reflective mirror 111 by the positioning core inclined plane;
The reflective mirror 111, the upper top plate 101 and the front panel 109 may be of a type commonly used in the existing beam limiter, and the specific type is not limited herein. The utility model provides a restraint ware including regulation formula reflector seat and location frock can improve the simple operation nature of adjusting the reflector, improve the position precision and the reduce cost of reflector.
As a further embodiment of the embodiment, the adjustable mirror bases are preferably symmetrically distributed, and the number of the connecting members, the number of the telescopic supporting members and the number of the traction members respectively include 2 to 5, so as to enhance the structural strength of the adjustable mirror bases.
Specifically, in this embodiment, for the reinforcing structure intensity and reduction in production cost of regulation formula speculum seat, regulation formula speculum seat adopts the symmetric distribution, and includes 2 connecting piece, 2 flexible support piece and 2 draw the piece, nevertheless the structure of regulation formula speculum seat is not limited to this.
As a further embodiment of the embodiment, the carrier is preferably an acrylic plate with a transparent material to reduce the influence on the penetrating function of the X-ray, and the connection manner of the mirror 111 and the carrier may include one or a combination of adhesion and snap connection.
Specifically, in this embodiment, the carrier is preferably an acrylic carrier 102, and the connection between the acrylic carrier 102 and the mirror 111 is preferably fixed by a double-faced adhesive tape with a trademark of 3M, so as to reduce the structural complexity of the adjustable mirror seat, but the type of the carrier and the connection with the mirror 111 are not limited thereto.
As a further example of the embodiment, the fixing bracket may be manufactured by a sheet metal process, and the fixing bracket bottom plate and the fixing bracket side plate may be integrally formed; the connection mode of the fixing bracket and the upper top plate 101 may include one or a combination of bonding, welding, riveting, snap-fit connection, pin connection, and screw connection.
Specifically, the bottom plate of the fixed support and the side plate of the fixed support are preferably integrally formed, so that the process difficulty is reduced, and the production cost is reduced. In this embodiment, the fixing bracket is preferably a sheet metal fixing bracket 104, but is not limited thereto. The connection mode of the metal plate fixing bracket 104 and the upper top plate 101 is preferably fixed by 4M 3 countersunk screws, so as to facilitate installation and replacement, but is not limited thereto.
As a further example of the embodiment, the connector may include a connector base plate and a connector side plate that are integrally formed by using a sheet metal process; the connecting manner of the connecting piece and the bearing piece can comprise one or a combination of bonding, welding, riveting, buckling connection, pin connection and threaded connection.
Specifically, the connecting piece bottom plate and the connecting piece side plate are preferably integrally formed, so that the process difficulty is reduced, and the production cost is reduced. In the present embodiment, the connecting member is preferably a sheet metal connecting member 112, but is not limited thereto. Since the bearing member is the acrylic plate bearing member 102, the connection manner of the sheet metal connector 112 and the acrylic plate bearing member 102 is preferably, but not limited to, fixed by 4M 2.5 screws.
As a further embodiment of this embodiment, the connection means of the connecting member and the fixing bracket may include a shaft connection; the connecting piece lateral plate further comprises a connecting piece lateral plate protruding portion, the fixed support lateral plate further comprises a groove or a through hole for containing the connecting piece lateral plate protruding portion, so that the connecting piece lateral plate protruding portion serves as a running shaft of the connecting piece and the fixed support, and cost is reduced.
As a further example of this embodiment, the telescopic support may comprise a torsion spring 105.
Specifically, when the telescopic supporting member adopts the torsion spring 105, it is preferable that the side plate corresponding surface of the sheet metal connecting member 112 includes the connecting member side plate protruding portion. One of the connecting member side plate protruding portions may serve as a connecting shaft, and the other connecting member side plate protruding portion may serve as a support shaft of the torsion spring 105, so as to simplify the structure of the beam limiter, improve the convenience of operation, and reduce the cost, but not limited thereto, and the telescopic support member may also employ other types of springs or telescopic devices. The torsion spring 105 is preferably fixed by an E-shaped clamp spring 110 after being installed on the protruding portion of the side plate of the connecting member, so as to improve the structural stability and the convenience of operation, but not limited thereto.
As a further example of this embodiment, the connection manner of the pulling member and the front panel 109 may include one or a combination of a snap connection and a screw connection, and the connection manner of the pulling member and the connecting member may include one or a combination of an adhesive, a welding, a riveting, a snap connection, a pin connection and a screw connection.
As a further embodiment of this embodiment, the connector base plate further comprises a connector base plate through hole, and the pulling member is connected to the connector through the connector base plate through hole; the fixed support side plate further comprises a fixed support side plate through hole, the traction piece penetrates through the fixed support side plate through hole to be connected with the front panel 109, and the position of the fixed support side plate through hole is lower than the contact position of the traction piece and the connecting piece bottom plate.
In particular, the pulling member may be a strong steel cable 106, but is not limited thereto. When the connector base plate comprises the connector base plate through hole, one end of the traction piece can penetrate through the connector base plate through hole and is fixed by a steel wire rope buckle 113, but the connection mode of the traction piece and the connector is not limited to this. When the fixed support side plate comprises the fixed support side plate through hole, the position of the fixed support side plate through hole needs to be lower than the contact position of the traction piece and the connecting piece bottom plate, and the fixed support side plate through hole is used as a fulcrum for stretching. Of course, when the side plate through hole of the fixing bracket is not included, the contact position of the traction piece and the front panel 109 needs to be lower than the contact position of the traction piece and the connecting piece bottom plate to realize stretching. In the fixing support side plate through hole, a porcelain eye 103 is preferably installed to avoid damage to the fixing support side plate, and the porcelain eye 103 is preferably fixed by the E-shaped clamp spring 110.
As a further example of this embodiment, the inclination angle of the positioning core inclined plane may include a range of 10 ° to 80 °, and as required, the inclination angle of the positioning core inclined plane may be set to 30 °, 45 °, 60 °, and so on.
As a further embodiment of this embodiment, the positioning fixture may further include support rods 203, an accommodation space is provided between adjacent support rods 203, so as to fixedly connect the upper top plate 101 through the support rods 203, and the positioning fixture base 202 may further include a groove for accommodating the positioning core 201.
Specifically, the accommodating space may be used to accommodate the reflective mirror 111, so as to adjust the reflective mirror 111. In this embodiment, the number of the supporting rods 203 is 2, but not limited thereto, and can be selected according to the requirement. The support rod 203 is fixedly connected with the positioning tool base 202, and the specific connection mode can include bonding, welding, riveting, buckling connection, pin connection, threaded connection, integrated forming and the like. The groove is located on the side wall of the positioning tool base 202, and preferably, the inner surface of the groove is in contact with the positioning core 201 to limit, so that the positioning precision of the positioning tool is improved.
The utility model also provides an X-ray machine, X-ray machine includes above-mentioned beam limiting device, beam limiting device's structure is as above, and here is no longer repeated.
As shown in fig. 2 to 5, the present invention further provides a method for adjusting a beam limiter, which specifically comprises the following steps:
providing the beam limiter, and fixedly connecting the adjustable reflector base with the positioning tool base 202;
moving the positioning core 201 to make the inclined surface of the positioning core 201 contact with the reflecting mirror 111 to position the reflecting mirror 111;
adjusting the traction piece and fixing the traction piece between the front panel 109 and the connecting piece;
the positioning core 201 is removed to position the adjustable mirror mount.
Specifically, the method comprises the following steps:
fixing the upper top plate 101 and the bottom plate of the sheet metal fixing bracket 104 by 4M 3 countersunk head screws;
adhering and fixing the first surfaces of the reflector 111 and the acrylic plate bearing piece 102 by 1 layer of double-faced adhesive with the brand number of 3M;
fixing the second surface of the acrylic plate bearing member 102 and the bottom plate of the sheet metal connecting member 112 by 4M 2.5 screws;
the porcelain eye 103 penetrates through a side plate through hole of the sheet metal fixing support 104 and is clamped with the E-shaped clamp spring 110 for fixing;
penetrating a side plate protruding part of the sheet metal connecting piece 112 into a through hole of a side plate of the sheet metal fixing support 104, installing the torsion spring 105 on the other side plate protruding part of the sheet metal connecting piece 112, and clamping the E-shaped clamp spring 110 for fixing;
threading M3 adjusting screws 108 and M3 washers 107 into the front panel 109, screwing locknut 114 and eye nut 115 (not tightened) onto the back of the front panel 109;
one end of the steel wire rope 106 penetrates through the porcelain eye 103, is connected with the sheet metal connecting piece 112, and is fixed through the steel wire rope buckle 113, so that the adjustable reflector base is installed;
fixedly connecting the upper top plate 101 of the adjustable reflector base with the support rod 203, so as to install the adjustable reflector base on the positioning tool, and slowly pushing the positioning core 201, so that the inclined surface of the positioning core 201 is completely in close contact with the reflector 111;
the other end of the wire rope 106 is passed through the eye nut 115 and straightened, and then fixed with the wire rope buckle 113.
Finally, the M3 adjusting screw 108 is screwed or unscrewed to adjust the tightness of the steel wire 106, so that when the positioning core 201 is drawn out, the locking nut 114 can be screwed while the reflector 111 is still kept at the fixed positioning angle.
In order to further enhance the stability of the adjustable reflector base, the locknut 114 may be coated with thread glue and the thread contacting the eye nut 115 may be damaged to be fixed. It should be noted that the fixing and adjusting steps can be adjusted according to the needs, and are not limited to this.
To sum up, the utility model discloses a beam limiter and X-ray production apparatus provides including adjusting formula reflector seat and with adjusting formula reflector seat assorted location frock, can improve the simple operation nature of adjusting the reflector, improve the position accuracy of reflector, improve structural strength and reduce cost. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. A beam limiter is characterized by comprising an adjustable reflector base and a positioning tool matched with the adjustable reflector base; wherein the content of the first and second substances,
the regulation formula speculum seat includes reflector, goes up roof, front panel and:
the bearing piece comprises a bearing piece first surface and a bearing piece second surface which are arranged oppositely so as to be connected with the reflector through the bearing piece first surface;
the fixed support comprises a fixed support bottom plate and a fixed support side plate connected with the fixed support bottom plate, and the fixed support bottom plate is fixedly connected with the upper top plate;
the connecting piece comprises a connecting piece bottom plate and a connecting piece side plate connected with the connecting piece bottom plate, the connecting piece bottom plate is fixedly connected with the second surface of the bearing piece, and the connecting piece side plate is movably connected with the fixed support side plate so as to adjust the position of the bearing piece through the connecting piece;
the telescopic supporting piece is positioned between the fixed support and the connecting piece, is in contact with the fixed support bottom plate and the connecting piece bottom plate, and supports the fixed support and the connecting piece through the telescopic supporting piece;
the traction piece is connected with the front panel and the connecting piece bottom plate so as to adjust the position of the connecting piece through the traction piece;
the location frock includes:
the positioning core comprises a positioning core inclined plane so as to position the reflector through the positioning core inclined plane;
the positioning tool base comprises an accommodating space for accommodating the adjustable reflector base, so that the positioning tool base is fixedly connected with the upper top plate.
2. The beam limiter of claim 1, wherein: the adjustable reflector bases are symmetrically distributed, and the number of the connecting pieces, the number of the telescopic supporting pieces and the number of the traction pieces respectively range from 2 to 5.
3. The beam limiter of claim 1, wherein: the connecting piece side plate also comprises a connecting piece side plate protruding part, and the fixed support side plate also comprises a groove or a through hole for accommodating the connecting piece side plate protruding part; the connecting piece bottom plate further comprises a connecting piece bottom plate through hole, and the traction piece is connected with the connecting piece through the connecting piece bottom plate through hole.
4. The beam limiter of claim 1, wherein: the fixed support side plate further comprises a fixed support side plate through hole, the traction piece penetrates through the fixed support side plate through hole to be connected with the front panel, and the position of the fixed support side plate through hole is lower than the contact position of the traction piece and the connecting piece bottom plate.
5. The beam limiter of claim 1, wherein: the connection mode of the reflector and the bearing piece comprises one or a combination of bonding and buckling connection; the connecting mode of the fixed support and the upper top plate comprises one or a combination of bonding, welding, riveting, buckling connection, pin connection and threaded connection; the connecting mode of the connecting piece and the bearing piece comprises one or a combination of bonding, welding, riveting, buckling connection, pin connection and threaded connection; the connecting mode of the connecting piece and the fixed bracket comprises a shaft connection; the connection mode of the traction piece and the front panel comprises one or a combination of buckle connection and threaded connection, and the connection mode of the traction piece and the connecting piece comprises one or a combination of bonding, welding, riveting, buckle connection, pin connection and threaded connection.
6. The beam limiter of claim 1, wherein: the range of the inclination angle comprises 10-80 degrees.
7. The beam limiter of claim 1, wherein: the positioning tool further comprises supporting rods, an accommodating space is formed between every two adjacent supporting rods, the supporting rods are fixedly connected with the upper top plate, and the positioning tool base further comprises a groove for accommodating the positioning core.
8. The beam limiter of claim 1, wherein: the telescopic support comprises a torsion spring; the carrier comprises an acrylic plate; the traction member comprises a steel wire rope.
9. An X-ray machine, characterized by: the X-ray machine comprises the beam limiter according to any one of claims 1-8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920676555.6U CN210249868U (en) | 2019-05-13 | 2019-05-13 | Beam limiter and X-ray machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920676555.6U CN210249868U (en) | 2019-05-13 | 2019-05-13 | Beam limiter and X-ray machine |
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| CN210249868U true CN210249868U (en) | 2020-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110169780A (en) * | 2019-05-13 | 2019-08-27 | 飞瑞医疗器械(嘉兴)有限公司 | Beam-defining clipper, X-ray production apparatus and its adjusting method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110169780A (en) * | 2019-05-13 | 2019-08-27 | 飞瑞医疗器械(嘉兴)有限公司 | Beam-defining clipper, X-ray production apparatus and its adjusting method |
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