CN112155583B

CN112155583B - Auxiliary adjusting unit, positioning device, medical imaging equipment and calibration method

Info

Publication number: CN112155583B
Application number: CN202011054094.2A
Authority: CN
Inventors: 刘伯聪; 祝一鸣
Original assignee: Neusoft Medical Systems Co Ltd
Current assignee: Neusoft Medical Systems Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2023-05-02
Anticipated expiration: 2040-09-29
Also published as: CN112155583A

Abstract

The invention discloses an auxiliary adjusting unit, a positioning device, medical imaging equipment and a calibration method, wherein the auxiliary adjusting unit comprises a connecting piece, a mounting piece and an adjusting piece, and the connecting piece is provided with an adjusting groove; the mounting piece is provided with a mounting cavity, the mounting cavity is provided with a mounting center line, the mounting piece is further provided with a fastening structure for fixing the positioning lamp in the mounting cavity, the mounting piece can rotate relative to the connecting piece, the positioning lamp can rotate around the mounting center line, and a rotation stopping structure is arranged between the mounting piece and the connecting piece; the adjusting piece is arranged on the connecting piece and used for adjusting the opening size of the adjusting groove so that the installation center line can swing. The auxiliary adjusting unit, the positioning device, the medical imaging equipment and the calibration method can be beneficial to reducing operation times and improving calibration efficiency of the reference light.

Description

Auxiliary adjusting unit, positioning device, medical imaging equipment and calibration method

Technical Field

The invention relates to the technical field of medical instruments, in particular to an auxiliary adjusting unit, a positioning device, medical imaging equipment and a calibration method.

Background

Medical imaging equipment such as CT (Computed Tomography), i.e. computed tomography, comprises a gantry provided with a detection chamber and positioning lamps mounted on the gantry. After the fan-shaped positioning light surface emitted by the positioning lamp (such as laser) coincides with the detection light plane, the formed light projected onto the frame by the positioning light surface is set as reference light, and the precision of the reference light improves the scanning precision of the medical imaging equipment. However, to ensure that the fan-shaped positioning light surface emitted by the positioning lamp coincides with the detection light plane, the emission position of the positioning lamp needs to be calibrated and adjusted.

At present, the positioning light is usually adjusted to adjust the position of the fan-shaped positioning light surface so that the positioning light surface can be overlapped with the detection light plane, and the smaller the overlap ratio error or the parallelism error of the positioning light surface and the detection light plane is, the higher the precision is when the formed light projected onto the frame by the positioning light surface is used as the reference light. However, due to the defect of the mounting structure of the positioning lamp on the frame, uncertainty is large in the calibration process, repeated operation is needed, and the calibration efficiency of the reference light is not improved.

Disclosure of Invention

Based on this, it is necessary to provide an auxiliary adjusting unit, a positioning device, a medical imaging apparatus and a calibration method.

The technical scheme is as follows:

in one aspect, the invention provides an auxiliary adjusting unit comprising a connecting piece, a mounting piece and an adjusting piece. The connecting piece is provided with an adjusting groove; the connecting piece includes first connector and second connector, is equipped with the adjustment tank between first connector and the second connector, and the second connector is equipped with the locating surface. The mounting piece is provided with a mounting cavity, the mounting cavity is provided with a mounting center line, the mounting piece is further provided with a fastening structure for fixing the positioning lamp in the mounting cavity, the mounting piece can rotate relative to the connecting piece, the positioning lamp can rotate around the mounting center line, and a rotation stopping structure is arranged between the mounting piece and the connecting piece; the adjusting piece is arranged between the second connecting body and the first connecting body and is used for adjusting the opening size of the adjusting groove so as to enable the angle between the installation center line and the positioning surface to be adjustable.

When the auxiliary adjusting unit is used, the positioning lamp is fixed on the mounting cavity through the fastening structure and then fixed with the rack through the connecting piece, and then the positioning lamp is arranged on the rack. When the position of the locating light surface emitted by the locating lamp needs to be adjusted, an operator can loosen the fastening structure, rotate the locating lamp and rotate the locating light surface. The installation center line can swing by adjusting the position of the adjusting piece or the length of the adjusting piece, so that the swing adjustment of the positioning light surface is realized; in the process, the adjusting groove of the connecting piece is changed in size, and the related acting force does not act on the positioning lamp, so that the positioning lamp is not damaged; the positioning lamp can rotate around the mounting center piece by rotating the mounting piece, so that the positioning light face can rotate again; in this process, the force driving the positioning light surface to rotate acts on the mounting member, so that the positioning lamp is not damaged. Therefore, the auxiliary adjusting unit can adjust the position of the positioning light surface of the positioning lamp through various means, and the calibration process is regular and circulated, so that the operation times are reduced, and the calibration efficiency of the reference light is improved.

The technical scheme is further described as follows:

in one embodiment, the first connector is provided with a positioning through hole, and the center line of the positioning through hole is on the same straight line with the installation center line.

In one embodiment, the adjusting member includes a first adjusting bolt and a second adjusting bolt, the first connecting body is provided with a first threaded hole and a first through hole, and the second connecting body is provided with a second threaded hole; the screw rod of the first adjusting bolt is in threaded fit with the first threaded hole, so that the free end of the first adjusting bolt can pass through the first threaded hole to be arranged and propped against the second connecting body; the screw rod of the second adjusting bolt is in threaded fit with the second threaded hole through the first through hole and the adjusting groove, so that the screw cap of the second adjusting bolt can be extruded with the first connecting body;

or, the adjusting piece comprises a driving part arranged in the adjusting groove, and a first screw rod and a second screw rod which are respectively and fixedly arranged at two ends of the driving part, wherein the external screw thread of the first screw rod is opposite to the external screw thread of the second screw rod, the first connecting body is provided with a third threaded hole in threaded fit with the first screw rod, and the second connecting body is provided with a fourth threaded hole in threaded fit with the second screw rod.

In one embodiment, the fastening structure includes a first fastener and a fifth threaded hole penetrating through a side wall of the mounting cavity, the first fastener is in threaded engagement with the fifth threaded hole, and a free end of the first fastener can be engaged with an inner side wall of the mounting cavity to form a clamping portion.

In one embodiment, the mounting member is provided with a circular arc annular second through hole, the rotation stopping structure comprises a second fastening member and a sixth threaded hole arranged on the connecting member, the second fastening member is in threaded fit with the sixth threaded hole through the second through hole, and the second fastening member is provided with a pressing end for pressing the mounting member.

In one of the embodiments, the mounting member is provided with an operating portion for driving the mounting member to rotate.

In one embodiment, the anti-rotation structure is a damping structure such that the mounting member dampens rotation relative to the connector band.

On the other hand, the invention also provides a positioning device which comprises the auxiliary adjusting unit in any embodiment, and further comprises a positioning lamp, wherein the positioning lamp is fixed on the mounting piece through a fastening structure, and the emitting direction of the positioning lamp and the mounting center line are arranged in the same direction.

The positioning device is applied with the auxiliary adjusting unit, is arranged on the frame through the connecting piece, and is electrified when the reference light is calibrated, the emitting direction of the positioning lamp and the mounting center line are arranged in the same direction, so that the positioning light surface emitted by the positioning lamp is projected on the frame to form light, and the position of the light can be adjusted by the auxiliary adjusting unit. Specifically, after the fastening structure is loosened, the positioning lamp is rotated to perform rough adjustment, for example, if the light formed by projecting the positioning light surface emitted by the positioning lamp on the stand coincides with the reference line on the stand, the position of the positioning lamp is kept unchanged, and at this time, the light can be set as the reference light. If the positioning lamp is rotated, the light formed by projecting the positioning light surface emitted by the positioning lamp on the rack can not be overlapped with the datum line on the rack, so that the light and the datum line are overlapped or parallel as far as possible, the position of the positioning lamp is kept unchanged, and the fastening structure is locked to fix the positioning lamp on the mounting piece; then fine tuning is carried out, the position or length of the adjusting piece is adjusted to enable the light to be close to the datum line, the mounting piece is rotated to enable the light to be overlapped with the datum line, and the mounting piece is locked by the rotation stopping structure; or the light can be overlapped with the datum line by adjusting the position of the adjusting piece; or the light rays can be overlapped with the datum line by rotating the mounting piece, and the mounting piece is locked by utilizing the rotation stopping structure; and then coarse tuning and then fine tuning are performed, so that the light can coincide with the datum line, and the light can be set as the datum light. Therefore, the positioning device adopts the auxiliary adjusting unit, can assist in the installation and adjustment of the positioning lamp, and can be adjusted in a rough adjustment mode and then in a fine adjustment mode in the adjustment process, so that the calibration accuracy of the reference light is improved.

On the other hand, the invention also provides medical imaging equipment, which comprises the positioning device in the embodiment, and further comprises a stand provided with a detection cavity, wherein the stand is provided with a datum line, and the positioning device is fixedly arranged on the stand and is used for forming datum rays.

When the medical imaging equipment is used for calibrating the reference light, the fastening structure can be loosened, the positioning lamp is rotated for coarse adjustment, and if the light formed by the projection of the positioning light surface emitted by the positioning lamp on the stand coincides with the reference line on the stand, the position of the positioning lamp is kept unchanged, and the light can be set as the reference light. If the positioning lamp is rotated, the light formed by projecting the positioning light surface emitted by the positioning lamp on the rack can not be overlapped with the datum line on the rack, so that the light and the datum line are overlapped or parallel as far as possible, the position of the positioning lamp is kept unchanged, and the fastening structure is locked to fix the positioning lamp on the mounting piece; then fine tuning is carried out, the position or length of the adjusting piece is adjusted to enable the light to be close to the datum line, the mounting piece is rotated to enable the light to be overlapped with the datum line, and the mounting piece is locked by the rotation stopping structure; or the light can be overlapped with the datum line by adjusting the position of the adjusting piece; or the light rays can be overlapped with the datum line by rotating the mounting piece, and the mounting piece is locked by utilizing the rotation stopping structure; and then rough adjustment and then fine adjustment are performed, so that the light can coincide with the reference line, and the light can be set as the reference light. Therefore, the calibration precision of the reference light of the medical imaging equipment is higher, and the scanning precision is improved; and in the process of calibration, the positioning lamp is not damaged, and the product reliability is improved.

On the other hand, the invention also provides a calibration method of the reference light, and the frame is provided with the reference line based on the medical imaging equipment; the calibration method comprises the following steps:

the positioning lamp is rotated, so that light rays formed by projecting a positioning light surface emitted by the positioning lamp on the frame are in a first position relation with the datum line;

if the first position relation is coincident, the first position relation is kept, the positioning lamp is fixed, the light is set as reference light, and calibration is completed;

if the first position relation is not coincident, the first position relation is kept, the positioning lamp is fixed on the mounting piece, the position or the length of the adjusting piece is adjusted, or/and the mounting piece is rotated until the light is coincident with the datum line, and the light is the datum line, so that the calibration is completed.

Therefore, by using the calibration method of the reference light, the calibration process of the positioning light surface of the positioning lamp can be regularly circulated, the dependence on the experience of an operator is reduced, the operation times are reduced, and the calibration efficiency of the reference light is improved.

Drawings

FIG. 1 is a schematic diagram of a medical imaging apparatus according to an embodiment;

FIG. 2 is a schematic view of the positioning device shown in FIG. 1;

FIG. 3 is an exploded view of the positioning device of FIG. 2;

FIG. 4 is a schematic view of the fitting of the mounting member and the positioning lamp shown in FIG. 2;

FIG. 5 is a schematic diagram of the auxiliary adjusting unit according to an embodiment;

FIG. 6 is an exploded schematic view of the structure of the auxiliary adjusting unit shown in FIG. 5;

fig. 7 is a partial structure of the auxiliary adjusting unit shown in fig. 5, illustrating a sectional view;

fig. 8 is a partially schematic cross-sectional view of a secondary adjustment unit in another embodiment.

Reference numerals illustrate:

10. a frame; 12. detecting a light plane; 14. a detection chamber; 16. a reference line; 20. a positioning device; 22. an auxiliary adjusting unit; 24. positioning a lamp; 24a, positioning a light surface; 100. a connecting piece; 110. an adjustment tank; 120. a first connecting body; 122. positioning the through hole; 124. a first threaded hole; 126. a first through hole; 128. a third threaded hole; 130. a second connector; 132. a positioning surface; 134. a second threaded hole; 136. a fourth threaded hole; 200. a mounting member; 210. a mounting cavity; 220. installing a central line; 230. a fastening structure; 232. a first fastener; 234. a fifth threaded hole; 236. a clamping part; 240. a second through hole; 250. an operation unit; 300. a rotation stopping structure; 310. a second fastener; 312. a pressing end; 320. a sixth threaded hole; 400. an adjusting member; 410. a first adjusting bolt; 420. a second adjusting bolt; 430. a driving section; 440. a first screw; 450. and a second screw.

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Detailed Description

The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The existing medical imaging equipment comprises a frame and a positioning lamp, wherein the frame is provided with a detection cavity and a mounting structure for mounting the positioning lamp, and the positioning lamp is arranged on the frame through the mounting structure. Because of manufacturing errors and assembly errors, after leaving a factory or replacing a positioning lamp, in order to reduce the overlapping ratio error or parallelism error between a fan-shaped positioning light surface and a detection light plane emitted by the positioning lamp, the position of the positioning lamp needs to be adjusted to adjust the position of the positioning light surface. However, due to the defect of the mounting structure or the structural characteristics of the positioning lamp, the operation process is complicated in the process of manually adjusting the position of the positioning lamp. If the positioning light is fixed, the positioning light surface will change again, resulting in the damage of the previously adjusted overlap ratio or parallelism. At this time, the positioning lamp is fixed, so that the positioning lamp is clamped by the tool pliers to adjust the position hard, so that the positioning light surface coincides with the light plane, but the adjustment mode causes larger uncertainty in the calibration process, and repeated operation is needed, which is not beneficial to improving the calibration efficiency of the reference light. Meanwhile, in the process of using the tool pliers, the outer surface of the positioning lamp can be damaged, and even the positioning lamp can not work.

Based on this, it is necessary to provide an auxiliary adjusting unit for assisting in the calibration of the positioning light surface, so as to reduce the uncertainty in the calibration process, enable the calibration process to be regular and circulated, reduce the operation times, and improve the calibration efficiency of the reference light of the medical imaging device.

For a better understanding of the auxiliary adjustment unit of the present invention, a medical imaging device to which the auxiliary adjustment unit is applied is described.

In one embodiment, as shown in fig. 1, a medical imaging apparatus is provided, which includes a frame 10 and a positioning device 20. The housing 10 is provided with a detection chamber 14 and a reference line 16, the reference line 16 being used to calibrate a locating light surface 24a. The positioning device 20 includes an auxiliary adjustment unit 22 and a positioning light 24.

As shown in fig. 2 and 5, the auxiliary adjusting unit 22 includes a connecting member 100, a mounting member 200 and an adjusting member 400, wherein the connecting member 100 is provided with an adjusting groove 110; the mounting member 200 is provided with a mounting cavity 210, the mounting cavity 210 is provided with a mounting center line 220, the mounting member 200 is further provided with a fastening structure 230 for fixing the positioning lamp 24 in the mounting cavity 210, the mounting member 200 can rotate relative to the connecting member 100, the positioning lamp 24 can rotate around the mounting center line 220, and a rotation stopping structure 300 is arranged between the mounting member 200 and the connecting member 100; the adjusting member 400 is disposed on the connection member 100 for adjusting the opening size of the adjusting slot 110 so that the installation center line 220 can swing.

The positioning lamp 24 is fixed on the mounting member 200 through the fastening structure 230, and the emitting direction of the positioning lamp 24 is set in the same direction as the mounting center line 220.

In this way, the positioning lamp 24 is fixed to the frame 10 by the connector 100, and then is mounted on the frame 10. When the position of the positioning light surface 24a emitted by the positioning lamp 24 needs to be adjusted, the operator can loosen the fastening structure 230, rotate the positioning lamp 24 to rotate the positioning light surface 24a, and then adjust the light formed by projection on the stand 10 to be parallel to or coincide with the reference line 16. The installation center line 220 can be swung by adjusting the position of the adjusting piece 400 or the length of the adjusting piece 400, so that the swing adjustment of the positioning light surface 24a is realized, and the distance between the light and the reference line 16 can be adjusted; in this process, by changing the size of the adjusting groove 110 of the connector 100, the related force will not act on the positioning lamp 24, so the positioning lamp 24 will not be damaged; the positioning lamp 24 can rotate around the installation center member (as shown in fig. 4) by rotating the installation member 200, so that the positioning light surface 24a can rotate again, i.e. after the positioning lamp 24 is fixed, the parallel or overlapping adjustment can be performed; in this process, a force for driving the positioning light surface 24a to rotate acts on the mount 200, so that the positioning lamp 24 is not damaged. Thus, the auxiliary adjusting unit 22 can adjust the position of the positioning light surface 24a of the positioning lamp 24 by various means, and the calibration process is regular and circulated, which is beneficial to reducing the operation times.

Specifically, referring to fig. 1, when the medical imaging device performs calibration of the reference light: as shown in fig. 2 and 3, after the fastening structure 230 is loosened, the positioning lamp 24 is turned to perform rough adjustment, for example, the light beam formed by projecting the positioning light surface 24a emitted by the positioning lamp 24 onto the frame 10 overlaps with the reference line 16 on the frame 10, so that the position of the positioning lamp 24 is kept unchanged, and the light beam can be set as the reference light beam. If the positioning lamp 24 is rotated, the light beam formed by the projection of the positioning light surface 24a emitted by the positioning lamp 24 on the frame 10 is overlapped with the datum line 16 on the frame 10, the light beam is overlapped or parallel as far as possible, the position of the positioning lamp 24 is kept unchanged, and the fastening structure 230 is locked to fix the positioning lamp 24 on the mounting piece 200; then fine tuning is performed, as shown in fig. 2 and 3, by adjusting the position or length of the adjusting member 400 to make the light close to the reference line 16, and then rotating the mounting member 200 to make the light coincide with the reference line 16, and locking the mounting member 200 by the rotation stopping structure 300; or by adjusting the position of the adjusting member 400, the light can be coincident with the reference line 16; or as shown in fig. 2 to 4, by rotating the mounting member 200, the light can be made to coincide with the reference line 16, and the mounting member 200 is locked by the rotation stopping structure 300; and then coarse tuning and then fine tuning are performed so that the light can be overlapped with the reference line 16, and the light can be set as the reference light. Therefore, the calibration precision of the reference light of the medical imaging equipment is higher, and the scanning precision is improved; and in the process of calibration, the positioning lamp 24 is not damaged, which is beneficial to improving the reliability of the product.

It will be appreciated that the arrangement of the "auxiliary adjustment unit 22" makes no change in the mounting structure on the frame 10, i.e. in the structure of the frame 10 itself, the production process, etc.; the above problem can be solved only by manufacturing the auxiliary adjusting unit 22, and the auxiliary adjusting unit 22 can be applied to old equipment and can also improve the precision of the reference light of the old equipment.

The "reference line 16" is formed by at least two line segments that can intersect or is curved, and the "reference line 16" can define a plane. In particular, in this embodiment, as shown in fig. 1, the "reference line 16" is arc-shaped.

Further, the detection light plane 12 and the positioning light plane 24a are adjusted by the reference line 16, so as to be convenient for calibration, and the detection light plane 12 and the positioning light plane 24a are overlapped. Therefore, in the adjustment process of the positioning light surface 24a, the light beam formed by projecting the positioning light surface 24a onto the frame 10 is only required to be overlapped with the reference line 16, and can be set as the reference light beam.

It should be noted that, the "installation center line 220" is parallel to the plane of the "reference line 16", and the positioning lamp 24 rotates around the "installation center line 220" to adjust the parallelism between the positioning plane emitted by the positioning lamp 24 and the plane of the "reference line 16". While the swinging of the "mounting center line 220" effects the adjustment of the spacing of the light rays from the "fiducial line 16".

It should be noted that, the adjusting member 400 may be capable of adjusting the size of the opening of the adjusting slot 110 by using various means, for example, two ends of the adjusting member 400 are connected to two opposite sidewalls of the adjusting slot 110, and at this time, the size of the opening of the adjusting slot 110 may be adjusted by adjusting the length of the adjusting member 400; the "opening of the adjustment slot 110" is adjustable in size by changing the position of the adjustment member 400 in the adjustment slot 110, such as by changing the angle of inclination, such that the vertical distance of the adjustment member 400 in the adjustment slot 110 is changed.

Of course, as shown in fig. 2 and 3, or as shown in fig. 5 to 7, in the embodiment, the connector 100 includes a first connector 120 and a second connector 130, an adjusting slot 110 is disposed between the first connector 120 and the second connector 130, the second connector 130 is provided with a positioning surface 132, and the adjusting member 400 is disposed between the second connector 130 and the first connector 120, for adjusting the opening size of the adjusting slot 110, so that the angle between the installation center line 220 and the positioning surface 132 is adjustable. In this way, the adjustment groove 110 is formed by the first connector 120 and the second connector 130, and the adjustment tool 400 is disposed between the second connector 130 and the first connector 120, thereby adjusting the opening size of the adjustment groove 110; such as the length or the inclination angle of the adjustment member 400. At the same time, the positioning surface 132 is provided to facilitate alignment of the mounting centerline 220 as a datum surface during manufacturing or assembly; in the process of installing the positioning lamp 24 by using the auxiliary adjusting unit 22, the connecting piece 100 can be better positioned and fixed on the frame 10 by using the positioning surface 132, so that the assembly precision is improved, and the adjustment precision of the reference light is improved.

Alternatively, the adjustment slot 110 is inverted "L" shaped or "arcuate".

On the basis of the above embodiment, as shown in fig. 5 to 7, in one embodiment, the adjusting member 400 includes a first adjusting bolt 410 and a second adjusting bolt 420, the first connecting body 120 is provided with a first threaded hole 124 and a first through hole 126, and the second connecting body 130 is provided with a second threaded hole 134; the screw of the first adjusting bolt 410 is in screw-fit with the first threaded hole 124, so that the free end of the first adjusting bolt 410 can pass through the first threaded hole 124 to be arranged and prop against the second connecting body 130; the screw of the second adjusting bolt 420 is screwed with the second threaded hole 134 through the first through hole 126 and the adjusting groove 110, so that the nut of the second adjusting bolt 420 can be pressed against the first connecting body 120. Thus, the first adjusting bolt 410 may be rotated such that the free end of the first adjusting bolt 410 abuts against the second connecting body 130 for opening the adjusting slot 110; and by rotating the second adjusting bolt 420, the nut of the second adjusting bolt 420 is pressed against the first connecting body 120 for contracting the opening of the adjusting groove 110. Further, the opening size of the adjusting groove 110 is realized by rotating the first adjusting bolt 410 or the second adjusting bolt 420, so that labor can be saved; and the self-locking capability of the thread transmission is utilized to realize instant rotation and instant stop, and the adjustment can be carried out at any angle in the range of the swinging angle, thereby being beneficial to improving the adjustment precision of light rays.

On the basis of the above-described embodiment, as shown in fig. 6 and 7, alternatively, the screw of the second adjusting bolt 420 can swing in the first through hole 126 and the adjusting groove 110. In this way, the second adjusting bolt 420 does not need to be screwed out of the second threaded hole 134, and the expansion adjustment of the adjusting groove 110 can be performed only by arranging the nut of the second adjusting bolt 420 and the first connecting body 120 at intervals; when the shrinkage adjustment of the adjustment groove 110 is performed again, the screw of the second adjustment bolt 420 does not need to be aligned with the second threaded hole 134, and the second adjustment bolt 420 is directly rotated, so that the operation efficiency is further improved.

Specifically, the first through hole 126 has a larger diameter than the screw of the second adjusting bolt 420, or the first through hole 126 has a bar shape.

In addition, in the above embodiment of the first connector 120, as shown in fig. 8, in another embodiment, the adjusting member 400 includes a driving portion 430 disposed in the adjusting groove 110, and a first screw 440 and a second screw 450 respectively fixed at two ends of the driving portion 430, the external thread of the first screw 440 is opposite to the external thread of the second screw 450, the first connector 120 is provided with a third threaded hole 128 in threaded engagement with the first screw 440, and the second connector 130 is provided with a fourth threaded hole 136 in threaded engagement with the second screw 450. As such, the external thread of the first screw 440 and the internal thread of the third screw hole 128 may be pressed inward by rotating the driving part 430 in a clockwise direction, and the external thread of the second screw 450 and the internal thread of the fourth screw hole 136 may be pressed inward for contracting the opening of the adjustment groove 110; and the driving part 430 is rotated in a counterclockwise direction such that the external screw thread of the first screw 440 is outwardly pressed with the internal screw thread of the third screw hole 128, and the external screw thread of the second screw 450 is outwardly pressed with the internal screw thread of the fourth screw hole 136 for opening the adjustment groove 110. Further, the first screw 440 and the second screw 450 are driven to rotate by the rotation driving part 430, so that the opening size of the groove 110 is adjusted, and labor can be saved; and the self-locking capability of the thread transmission is utilized to realize instant rotation and instant stop, and the adjustment can be carried out at any angle in the range of the swinging angle, thereby being beneficial to improving the adjustment precision of light rays.

Alternatively, the driving part 430 is provided with an outer hexagonal structure. So that the wrench can rotate.

Alternatively, the aperture of the third threaded hole 128 may be penetrated by the driving part 430 and the second screw 450. In this way, the adjusting member 400 is conveniently installed on the first connecting body 120 and the second connecting body 130.

It should be noted that, in the above two embodiments, the positions of the adjusting member 400 on the first connector 120 and the second connector 130 are adjusted by using the screw transmission principle, so as to realize the change of the opening size of the adjusting slot 110, and convert the rotation power into the contraction force or the expansion force, so that the labor can be saved; and the self-locking capability of the thread transmission is utilized to realize instant rotation and instant stop, and the adjustment can be carried out at any angle in the range of the swinging angle, thereby being beneficial to improving the adjustment precision of light rays.

On the basis of any of the above embodiments of the first connector 120, in one embodiment, the first connector 120 is provided with a positioning through hole 122, and a center line of the positioning through hole 122 is on the same straight line with the mounting center line 220. Thus, by providing the positioning through hole 122 on the first connector 120, the positioning through hole 122 is matched with the positioning lamp 24 in a positioning manner, and the center line of the positioning through hole 122 is in the same straight line with the installation center line 220, so that even if the fastening structure 230 is loosened, the rotation of the positioning lamp 24 can ensure that the positioning lamp 24 rotates around the installation center line 220.

It should be noted that, the "fastening structure 230" may be implemented by any fastening structure 230 that meets the use requirement, so long as the positioning lamp 24 can be fixed on the mounting cavity 210. Including but not limited to snap-fit, screw-fit fastening, etc.

On the basis of any of the above embodiments, as shown in fig. 2 and 3, or fig. 5 and 6, in particular to the present embodiment, the fastening structure 230 includes a first fastening member 232 and a fifth threaded hole 234 disposed through a side wall of the mounting cavity 210, the first fastening member 232 is in threaded engagement with the fifth threaded hole 234, and a free end of the first fastening member 232 can be engaged with the inner side wall of the mounting cavity 210 to form a clamping portion 236. In this manner, the opening or closing of the clamping portion 236 is achieved by rotating the first fastener 232, facilitating the loosening or locking of the fastening structure 230. And the size of the clamping part 236 is convenient to adjust, and the fixing of the positioning lamps 24 with different sizes can be easily realized.

Optionally, the free end of the first fastener 232 is provided with a resilient buffer (not shown) to avoid direct rigid abutment with the positioning lamp 24, further avoiding damage to the positioning lamp 24.

Alternatively, as shown in fig. 2 and 3, the first fastening member 232 may be plural.

It should be noted that, the "rotation stopping structure 300" may be any one of the conventional rotation stopping structures 300 satisfying the use requirement, as long as the fixing of the mounting member 200 to the connecting member 100 and the rotation of the mounting member 200 after the releasing can be realized. Including but not limited to snap-fit, screw-fit fastening, etc.

On the basis of any of the above embodiments, as shown in fig. 2 and 3, or as shown in fig. 5 and 6, in particular to the present embodiment, the mounting member 200 is provided with a circular-arc-shaped second through hole 240, the rotation stopping structure 300 includes a second fastening member 310 and a sixth threaded hole 320 disposed on the connecting member 100, the second fastening member 310 is in threaded engagement with the sixth threaded hole 320 through the second through hole 240, and the second fastening member 310 is provided with a pressing end 312 that presses against the mounting member 200. Thus, the second fastening member 310 is rotated to fix or loosen the mounting member 200, and when the mounting member 200 needs to be fixed, only the second fastening member 310 is rotated, and the pressing end 312 is used to press and fix the mounting member 200 on the connecting member 100; meanwhile, the circular arc annular second through holes 240 are matched with the second fastening pieces 310, so that the mounting piece 200 can rotate in a specified rotation range (such as 32 degrees), the mounting center line can rotate in a small range, and any position can be fixed by the second fastening pieces 310, so that the light adjusting precision can be improved.

Specifically, in one embodiment, the rotation center line of the mounting member 200 is perpendicular to the positioning surface 132 and perpendicular to the mounting center line, and the range of rotation of the mounting member 200 about the rotation center line is-16 ° to 16 °.

The "first fastener 232" and the "second fastener 310" may be fasteners having an external thread structure, such as bolts and screws.

On the basis of the above-described embodiment, as shown in fig. 3 or 6, the mount 200 is provided with an operation portion 250 for driving the mount 200 to rotate. Thus, the second fastening member 310 can be rotated at a small angle, so that the mounting member 200 can rotate with damping, and the mounting member 200 is prevented from easily changing during the process of locking the mounting member 200; specifically, fine adjustment of the rotation angle of the mount 200 is achieved by the operation portion 250.

The "operation portion 250" may be an operation structure in which the handle, knob, or the like directly rotates the mount 200, or may be a connection structure in which the mount 200 is rotated by a wrench, such as an outer hexagonal structure or an inner hexagonal structure.

Further, the anti-rotation structure 300 is optionally a damping structure such that the mount 200 is damped in rotation relative to the connector 100. In this way, the damping structure can realize the instant rotation and instant stop of the mounting piece 200, and the operation of an operator is facilitated.

In an embodiment, there is further provided a method for calibrating reference light, based on the medical imaging apparatus in any of the above embodiments, the gantry 10 is provided with a reference line 16; the calibration method comprises the following steps:

the positioning lamp 24 is rotated, so that the light beam formed by projecting the positioning light surface 24a emitted by the positioning lamp 24 on the stand 10 is in a first position relation with the reference line 16;

if the first positional relationship is coincident, the first positional relationship is maintained, the positioning lamp 24 is fixed, the light is a reference light, and calibration is completed;

if the first positional relationship is misaligned, the first positional relationship is maintained, the positioning lamp 24 is fixed to the mounting member 200, the position or length of the adjustment member 400 is adjusted, or/and the mounting member 200 is rotated until the light coincides with the reference line 16, the light is the reference light, and the calibration is completed.

Thus, by using this reference light calibration method, the adjustment of the light and the reference line 16 is achieved by rotating the positioning lamp 24. After the positioning lamp 24 is fixed, the distance between the light and the reference line 16 can be adjusted by adjusting the position or length of the adjusting piece 400; the alignment of the light and the reference line 16 can be performed again by rotating the mounting member 200, so that the alignment process of the alignment light surface 24a of the alignment lamp 24 can be regularly circulated, the dependence on the experience of the operator can be reduced, the operation times can be reduced, and the alignment efficiency of the reference light can be improved.

Specifically, rotating the positioning light 24, such as by overlapping the light with the reference line 16, can directly lock the positioning light 24. If the positioning lamp 24 is locked, the light is not coincident with the reference line; if the light intersects the datum, the mount 200 can be rotated so that the light coincides with the datum 16, and calibration is completed; if the mounting member 200 is rotated to make the light parallel to the reference line 16, the position or length of the adjusting member 400 can be adjusted to achieve the superposition of the light and the reference line 16, so as to complete the calibration. After the positioning lamp 24 is locked, the light is still coincident with the reference line 16, and calibration is completed.

When the positioning lamp 24 is turned and the light cannot be overlapped with the reference line 16, the light is parallel to the reference line 16 as much as possible. Alignment is then accomplished by adjusting the position or length of the adjustment member 400 to achieve light coincident with the fiducial line 16. If the adjustment member 400 is adjusted, it is found that the light and the reference line 16 still diverge, and the light is parallel or coincident with the reference line 16 by rotating the mounting member 200.

That is, after the positioning lamp 24 is fixed, the position or length of the adjusting member 400 may be adjusted, or/and the mounting member 200 may be rotated according to the actual situation until the light beam formed by the positioning lamp on the stand 10 coincides with the reference line 16, and the light beam is set as the reference light beam, so as to complete the calibration.

It should be noted that the "first connector" may be a part of the "connector", that is, the "first connector" is integrally formed with the other part of the "connector", such as the "second connector"; it is also possible to make a separate component separable from the other parts of the "connector, such as the second connector", i.e. "first connector" can be made separately and then be combined with the other parts of the "connector, such as the second connector".

Equivalently, a "body" or a "portion" may be a part of a corresponding "member", i.e., the "body" or the "portion" is integrally formed with the other portion of the "member"; or a separate component which is separable from the other part of the component, namely, a certain body and a certain part can be independently manufactured and then combined with the other part of the component into a whole. The expressions of "a body" and "a portion" are merely examples of embodiments, which are intended to facilitate reading, and are not intended to limit the scope of the invention, so long as the features described above are included and the actions are the same, it is to be understood that the invention is equivalent.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be understood that when an element is referred to as being "mounted," "positioned," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims

1. An auxiliary adjustment unit, characterized by comprising:

the connecting piece is provided with an adjusting groove, the connecting piece comprises a first connecting body and a second connecting body, the adjusting groove is arranged between the first connecting body and the second connecting body, and the second connecting body is provided with a positioning surface;

the mounting piece is provided with a mounting cavity, the mounting cavity is provided with a mounting center line, the mounting piece is further provided with a fastening structure for fixing the positioning lamp in the mounting cavity, the mounting piece can rotate relative to the connecting piece, so that the positioning lamp can rotate around the mounting center line, and a rotation stopping structure is arranged between the mounting piece and the connecting piece; and

The adjusting piece is arranged between the second connecting body and the first connecting body and is used for adjusting the opening size of the adjusting groove so that the angle between the installation center line and the positioning surface is adjustable.

2. The auxiliary adjusting unit according to claim 1, wherein the first connecting body is provided with a positioning through hole, and a center line of the positioning through hole is on the same line as the installation center line.

3. The auxiliary adjusting unit according to claim 1, wherein the adjusting member comprises a first adjusting bolt and a second adjusting bolt, the first connecting body is provided with a first threaded hole and a first through hole, and the second connecting body is provided with a second threaded hole; the screw rod of the first adjusting bolt is in threaded fit with the first threaded hole, so that the free end of the first adjusting bolt can pass through the first threaded hole to be arranged and abutted against the second connecting body; the screw rod of the second adjusting bolt is in threaded fit with the second threaded hole through the first through hole and the adjusting groove, so that the nut of the second adjusting bolt can be extruded with the first connector;

or, the regulating part comprises a driving part arranged in the regulating groove, and a first screw rod and a second screw rod which are respectively and fixedly arranged at two ends of the driving part, wherein the external screw thread of the first screw rod is opposite to the external screw thread of the second screw rod, the first connector is provided with a third threaded hole in threaded connection with the first screw rod, and the second connector is provided with a fourth threaded hole in threaded connection with the second screw rod.

4. The auxiliary adjusting unit according to claim 1, wherein the installation cavity is in a through hole shape, the fastening structure comprises a first fastening piece and a fifth threaded hole penetrating through the side wall of the installation cavity, the first fastening piece is in threaded fit with the fifth threaded hole, and the free end of the first fastening piece can be matched with the inner side wall of the installation cavity to form a clamping portion.

5. The auxiliary adjusting unit according to any one of claims 1 to 4, wherein the mounting member is provided with a circular-arc-shaped second through hole, the rotation stopping structure comprises a second fastening member and a sixth threaded hole formed in the connecting member, the second fastening member is in threaded fit with the sixth threaded hole through the second through hole, and the second fastening member is provided with a pressing end pressing against the mounting member.

6. The auxiliary adjusting unit according to claim 5, wherein the mount is provided with an operating portion for driving the mount to rotate.

7. The auxiliary adjustment unit according to any one of claims 1 to 6, wherein the rotation stopping structure is a damping structure such that the mounting member is damped in rotation relative to the connecting member band.

8. A positioning device, characterized by comprising the auxiliary adjusting unit according to any one of claims 1 to 7, and further comprising a positioning lamp, wherein the positioning lamp is fixed on the mounting member through the fastening structure, the positioning lamp can emit a positioning light surface, and the emitting direction of the positioning lamp is arranged in the same direction as the mounting center line.

9. A medical imaging device, comprising the positioning device according to claim 8, further comprising a frame provided with a detection cavity, wherein the positioning device is fixedly arranged on the frame and is used for forming a reference ray.

10. A method of calibrating reference light, wherein the gantry is provided with a reference line based on the medical imaging apparatus of claim 9; wherein the calibration method comprises the following steps:

the positioning lamp is rotated, so that light rays formed by projecting a positioning light surface emitted by the positioning lamp on the stand are in a first position relation with the datum line;

if the first position relation is coincident, the first position relation is maintained, the positioning lamp is fixed, the light is a reference light, and calibration is completed;

if the first position relation is not coincident, the first position relation is maintained, the positioning lamp is fixed on the mounting piece, the position or length of the adjusting piece is adjusted, or/and the mounting piece is rotated until the light is coincident with the datum line, and the light is the datum line, so that calibration is completed.