CN111090065A

CN111090065A - Adjusting device and superconducting magnetic resonance imaging system

Info

Publication number: CN111090065A
Application number: CN201911423153.6A
Authority: CN
Inventors: 张志�
Original assignee: Neusoft Medical Systems Co Ltd
Current assignee: Neusoft Medical Systems Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-01
Anticipated expiration: 2039-12-31
Also published as: CN111090065B

Abstract

The application provides an adjusting device and a superconducting magnetic resonance imaging system. An adjusting device comprises a fixed frame, a first adjusting piece and a second adjusting piece which are assembled to the fixed frame, a first sliding block connected to the first adjusting piece, a second sliding block connected to the second adjusting piece, and a butting piece connected to the first sliding block. The first slider is connected to the second slider. The first adjusting piece drives the first sliding block and the abutting piece to move along a first direction. The second adjusting piece drives the first sliding block, the second sliding block and the abutting piece to move along a second direction. The butting piece can move in a third direction, and the first direction is perpendicular to the second direction and the third direction. The adjusting device has simple structure and easy operation.

Description

Adjusting device and superconducting magnetic resonance imaging system

Technical Field

The application relates to the technical field of medical equipment, in particular to an adjusting device and a superconducting magnetic resonance imaging system.

Background

The superconducting magnetic resonance imaging system is an advanced image diagnosis device. The superconducting magnetic resonance imaging system comprises a superconducting magnet, a gradient coil and a radio frequency body coil which are positioned in a tubular space of the superconducting magnet, and a magnet housing which is coated on the superconducting magnet. The magnet housing includes a first shell and a second shell coupled together. The first shell covers the superconducting magnet, and the second shell comprises a bell mouth. If the bell mouth and the radio frequency body coil are butted in a staggered manner, the butt joint surface generates a fault, so that the sickbed jolts when entering, and even the sickbed deviates left and right in the moving process, so that a gap on one side is enlarged, and the hand clamping risk is generated. The position of the second shell can be limited by arranging an adjusting device, and the accurate butt joint of the bell mouth and the radio frequency body coil is ensured. The associated adjusting device is relatively complex in construction.

Disclosure of Invention

The application provides a simple structure's adjusting device and superconductive magnetic resonance imaging system.

The application provides an adjusting device, including fixed frame, equipment extremely the first regulating part and the second regulating part of fixed frame, be connected to the first slider of first regulating part, be connected to the second slider of second regulating part, be connected to the piece is held to the support of first slider, first slider is connected to the second slider, first regulating part drives first slider and support and hold the piece and remove along the first direction, the second regulating part drives first slider the second slider and support and hold the piece and remove along the second direction, support and hold the piece and can follow the third direction and remove, the first direction with the second direction and the third direction is perpendicular.

Further, fixed frame includes the frame, the frame encloses into first accommodation portion and the second passageway of intercommunication, first regulating part is spacing extremely the frame is located partly in first accommodation portion, first slider is located in first accommodation portion, second slider part is located in first accommodation portion, second regulating part is spacing extremely the frame is located partly in the second passageway.

Furthermore, one of the fixed frame and the second sliding block is provided with a second sliding groove, the other sliding block is provided with a protruding part located in the second sliding groove, and when the second sliding block moves along the second direction, the protruding part moves along the second sliding groove.

Furthermore, one of the first sliding block and the second sliding block is provided with a first sliding groove, the other sliding block is provided with a sliding part positioned in the first sliding groove, and when the first sliding block moves along the first direction, the sliding part moves along the first sliding groove.

Further, the first adjusting member and the second adjusting member are located on the same side of the adjusting device.

Further, the first adjusting part comprises a first operating part, the second adjusting part comprises a second operating part, the first operating part and the second operating part are limited together with the frame in a threaded connection mode, the first operating part is rotated, the first adjusting part moves along the first direction to drive the first sliding block to move along the first direction, and the second operating part is rotated to drive the second adjusting part to move along the first direction to drive the second sliding block, the first sliding block and the abutting part to move along the second direction.

Further, the first adjusting part comprises a first connecting piece, the first operating part is assembled and limited to the first connecting piece, the first sliding block comprises a guide groove, the adjusting device comprises a rod part assembled to the guide groove and the first connecting piece, and when the first sliding block moves along the second direction, the rod part moves along the guide groove.

Furthermore, the adjusting device comprises a connecting rod which connects the second sliding block and the second adjusting piece, the connecting rod can rotate relative to the second sliding block and the second adjusting piece, and the second adjusting piece moves along the first direction, so that the connecting rod drives the second sliding block, the first sliding block and the abutting piece to move along the second direction.

Further, the abutting piece comprises a fixed rod assembled to the first sliding block and a first rotating piece assembled to the fixed rod, and the first rotating piece rotates relative to the fixed rod to move along the third direction.

The application also provides a superconducting magnetic resonance imaging system, which comprises a superconducting magnet assembly, a shell and the adjusting device, wherein the adjusting device is connected with the superconducting magnet assembly and the shell, and the abutting piece is matched with the shell to limit the position of the shell.

The adjusting device of this application embodiment drives through adjusting first regulating part first slider and support and hold the piece and remove along the first direction, drives second slider, first slider and supports and hold the piece and remove along the second direction through adjusting the second regulating part, through adjusting support and hold the piece and make it remove along the third direction, simple structure, easy to operate.

Drawings

Fig. 1 is an exploded view of a superconducting magnetic resonance imaging system according to an embodiment of the present application.

Fig. 2 is a perspective view of an adjustment device according to an embodiment of the present application.

Fig. 3 is an exploded view of the adjustment device shown in fig. 2.

Fig. 4 is a perspective view of a second slider of the adjustment device shown in fig. 3.

Fig. 5 is an enlarged view of the circled portion of the adjustment device shown in fig. 2.

Fig. 6 is a perspective view of a first slider of the adjustment device shown in fig. 3.

Fig. 7 is a side view of the adjustment device of fig. 3 with the first slider engaged with the second slider.

Figure 8 is a cross-sectional schematic view of the superconducting magnetic resonance imaging system shown in figure 1.

Fig. 9 is an enlarged view of the circled portion of the cross-sectional view shown in fig. 8.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The adjusting device and the superconducting magnetic resonance imaging system are described in detail below with reference to the accompanying drawings.

Referring to fig. 1, the superconducting magnetic resonance imaging system of the present application includes a superconducting magnet assembly 1, a pair of housings 3 assembled and fixed to the superconducting magnet assembly 1, and an adjusting device 2 connecting the superconducting magnet assembly 1 and the housings 3. The superconducting magnet assembly 1 comprises first and second

opposite ends

10, 11 and a cavity 12 extending through the first and

second ends

10, 11. A pair of the housings 3 are assembled and fixed to the first end 10 and the second end 11, respectively. The housing 3 includes an aperture 30 aligned with the cavity 12. The superconducting magnet assembly 1 comprises a magnet 14 and a housing 15 which is clad to the magnet 14. The magnet 14 is substantially cylindrical and includes a main magnet 140, a gradient coil 142, and a radio frequency coil 143 arranged in this order. The cavity 12 is enclosed by the rf coil 143.

Referring to fig. 2 and 3, the adjustment device 2 is used to secure the position of the housing 3 to secure the opening 30 in alignment with the cavity 12. The adjusting device 2 includes a fixed frame 20, a first adjusting member 21 and a second adjusting member 22 assembled to the fixed frame 20, a first slider 23 connected to the first adjusting member 21, a second slider 24 and a butting member 25 connected to the first slider 23, and a link 26 connecting the second adjusting member 22 and the second slider 24. The fixed frame 20 is fixed to the superconducting magnet assembly 1. The position of the holding piece 25 is adjusted by moving the first slide block 23 and the second slide block 24, and the holding piece 25 is matched with the shell 3, so that the position of the shell 3 is further ensured. The holding member 25 includes a fixing rod 253 assembled to the first slider 23, and a first rotating member 251 and a second rotating member 252 assembled to the fixing rod 253.

As shown in fig. 8 to 9, the housing 3 includes a hole 31 for the fixing rod 253 to pass through, and the housing 3 abuts against the first rotating member 251 to define the position of the housing 3. After the fixing rod 253 passes through the hole 31, it is assembled to the fixing rod 253 using a fixing member 4 to fix the housing 3 and the fixing rod 253 together. The housing 3 may include a holder 33, the hole 31 may be disposed in the holder 33, and the fixing rod 253 may be shielded by the housing 3, that is, the adjusting device 2 may not be visible from the outside of the mri system, so as to prevent dust and enhance the aesthetic appearance of the mri system.

The fixing frame 20 includes a bezel 201. The frame 201 encloses a first receiving portion 202, a second receiving portion 203, a first channel 204 and a second channel 205 which are communicated. The fixing frame 20 further includes a pair of protrusions 206 extending from the bezel 201 into the first receiving portion 202. A pair of the projections 206 are disposed opposite to each other. The frame 201 is provided with a first hole 207 near the first receiving portion 202 and communicating with the first receiving portion 202, and a second hole 208 near the second channel 205 and communicating with the second channel 205. The frame 201 is further provided with a plurality of third holes 209 at corners thereof. The central axis of the first hole 207 is parallel to the central axis of the second hole 208, and the central axis of the third hole 209 is perpendicular to the central axis of the first hole 207. The fixing frame 20 may be fixed to the superconducting magnet assembly 1 by being assembled to the third hole 209 by a fixing device such as a bolt, and the adjusting device 2 may be further fixed to the superconducting magnet assembly 1.

The first adjusting member 21 is limited to the frame 201 and partially located in the first accommodating portion 202. The first slider 23 is located in the first accommodation portion 202. The second slider 24 is partially located in the first receptacle 202 and partially located in the first channel 204. The link 26 is located in the second receiving portion 203. The second adjustment member 22 is constrained to the frame 201 and partially located in the second channel 205. The first adjusting part 21 moves along the first direction to drive the first sliding block 23 and the abutting part 25 to move along the first direction; the second adjusting member 22 moves along the first direction, so that the connecting rod 26 drives the second sliding block 24, the first sliding block 23 and the abutting member 25 to move along the second direction. The first direction is perpendicular to the second direction. The first rotating member 251 is rotated, so that the first rotating member 251 moves along a third direction relative to the fixing rod 253. The third direction is perpendicular to the first direction and the second direction. The first rotating member 251 abuts against the housing 3, and the position of the housing 3 can be adjusted by adjusting the position of the first rotating member 251, which effectively ensures that the opening 30 of the housing 3 is aligned with the cavity 12.

When the superconducting magnetic resonance imaging system is assembled, the first rotating piece 251 is adjusted to a proper position, and then the shell 3 is assembled, so that the position of the shell 3 can be effectively ensured.

The first adjusting member 21 includes a first connecting member 210 and a first operating portion 211 limited to the first connecting member 210. The first connector 210 has a pair of lugs 2103 at one end. A pair of the first lugs 2103 are arranged in parallel. A pair of the first lugs 2103 are provided with communicating second assembling holes 2104, respectively. The other end of the first connecting member 210 is provided with a first assembling hole 2102. The first operating portion 211 passes through the first hole 207, is assembled into the first assembling hole 2102, and is limited to the first connecting member 210. The first operating portion 211 is capable of reciprocating with respect to the first connecting member 210 and the frame 201. The first operating portion 211 and the frame 201 are limited together at the first hole 207 by means of screw thread fit, and when the first operating portion 211 is rotated, the first adjusting member 21 is made to reciprocate relative to the frame 201. With such a design, the first operating portion 211 can be conveniently adjusted and the moving distance of the first adjusting member 21 can be controlled, and the moving distance of the first slider 23 can be further controlled.

The second adjusting member 22 includes a second connecting member 220 and a second operating portion 221 that is limited to the second connecting member 220. One end of the second connector 220 is provided with a second lug 2203. The second lug 2203 is formed by being recessed from the second connecting member 220 to a depth to accommodate the connecting rod 26, thereby further reducing the space occupied by the adjusting device 2. The second lug 2203 is provided with a fourth assembly hole 2204. The other end of the second connector 220 is provided with a third assembly hole 2202. The second operating portion 221 passes through the second hole 208, is assembled into the third assembly hole 2202, and is limited to the second connecting member 220. The second operating portion 221 is capable of reciprocating with respect to the second connecting member 220 and the frame 201. The second operation portion 221 and the frame 201 are limited together at the second hole 208 by a screw-fit manner, and when the second operation portion 221 is rotated, the second adjustment member 22 can reciprocate relative to the frame 201. With such a design, the second operation portion 221 can be conveniently adjusted, and the moving distance of the second adjusting member 22 can be controlled, and the moving distance of the second slider 24 can be further controlled.

In the above embodiment, the first operating portion 211 and the frame 201 are limited together at the first hole 207 by means of screw-fit, and when the first operating portion 211 is rotated, the first adjusting member 21 is made to reciprocate relative to the frame 201. In other embodiments, the first adjusting member 21 may also be in a sliding slot and a sliding block matching relationship, and the movement of the first adjusting member 21 may also be realized to drive the movement of the first sliding block 21. Similarly, the second adjusting member 22 can also realize the movement of the second adjusting member 22 through the matching relationship between the sliding groove and the sliding block, so as to drive the second sliding block 24 to move.

The opposite ends of the connecting rod 26 are respectively provided with a first through hole 260 and a second through hole 261. The adjusting device 2 includes a first rod 262 assembled to the second through hole 261 and a fourth assembling hole 2204 of the second connector 220 to limit the link 26 to the second connector 220, and the link 26 can rotate relative to the second connector 220. When the second adjusting member 22 moves back and forth along the first direction, the connecting rod 26 is driven to rotate relative to the second connecting member 220, so as to increase or decrease the distance between the second adjusting member 22 and the second sliding block 24 along the second direction, and the second sliding block 24 is pushed to move back and forth along the second direction. The link 26 is located in the first receiving portion 202. The first rod portion 262 may be integrally formed with the connecting rod 26 or the second adjusting member 22.

The first adjusting piece 21 and the second adjusting piece 22 are arranged in parallel and are located on the same side of the adjusting device 2, so that the first adjusting piece 21 and the second adjusting piece 22 can be adjusted conveniently; and space of the adjusting device is saved. In other embodiments, the first adjusting member 21 may be disposed perpendicular to the second adjusting member 22, and the second adjusting member 22 moves in the second direction to push the second slider 24 to move in the second direction, and the connecting rod 26 is omitted.

Referring to fig. 3 and 4, the second slider 24 includes an elongated main body portion 241, an extension portion 242 extending from the main body portion 241, and a third lug 243 extending from the extension portion 242. The thickness of the third lug 243 is smaller than that of the extension 242, so as to reserve a housing space for the connecting rod 26, and further reduce the space occupied by the adjusting device 2. The main body 241 has a first sliding groove 2410 formed along the longitudinal direction thereof. A pair of second sliding grooves 2411 are provided at both ends of the main body portion 241 in the width direction thereof. The first sliding groove 2410 is communicated with a pair of the second sliding grooves 2411.

The first sliding groove 2410 is T-shaped, and includes a first groove portion 24101 and a second groove portion 24102 extending in the thickness direction of the second slider 24. The length of the first groove portion 24101 is longer than that of the second groove portion 24102. The third lug 243 is provided with a third through hole 2430. The adjusting device 2 includes a second rod portion 263 assembled to the first through hole 260 and the third through hole 2430 to limit the link 26 to the second slider 24, and the link 26 can rotate relative to the second slider 24. The extending portion 242 is located in the first channel 204 and can slide along the first channel 204, which effectively ensures the smoothness of the sliding of the second slider 24. The second rod portion 263 can be integrally formed with the link or the second slider 24.

Referring to fig. 5, the protrusion 206 of the fixing frame 20 is assembled into the second sliding groove 2411 of the second sliding block 24, so as to effectively ensure the smoothness of the sliding of the second sliding block 24 along the frame 20, and at the same time, to limit the movement of the second sliding block 24 along the first direction and the third direction. In other embodiments, the protrusion 206 may be disposed on the second slider 24, and the second sliding groove 2411 may be disposed on the fixing frame 20.

Referring to fig. 6 to 7, the first slider 23 includes a base 230, a first protrusion 231 and a second protrusion 232 extending from the base 230, and a sliding portion 233 extending from the second protrusion 232. The base 230 is provided with a receiving hole 2301. The receiving hole 2301 may or may not penetrate the base portion 230. The first protrusion 231 is provided with an elongated guide groove 2310. The thickness of the base 230 is greater than the thickness of the first and

second protrusions

231 and 232. The first protrusion 231 and the second protrusion 232 are formed to extend from approximately the middle of the base 230.

The sliding portion 233 is located in the first groove portion 24101 of the second slider 24, and the second protruding portion 232 is located in the second groove portion 24102, which effectively ensures the smoothness of the reciprocating movement of the first slider 23 in the first direction. In other embodiments, the sliding portion 233 may be disposed on the second slider 24, and the first sliding groove 2410 may be disposed on the first slider 23.

As shown in fig. 2 and 3, the first protrusion 231 is located between the pair of lugs 2103 of the first adjuster 21. The adjusting means 2 includes a rod portion 212 assembled to the second assembling hole 2104 and the guide groove 2310. When the first adjusting member 21 extends in the first direction to reciprocate, the first sliding block 23 is driven to reciprocate along the first direction.

When the first slider 23 reciprocates along the second direction, the rod portion 212 slides along the guide groove 2310, which effectively ensures the smoothness of the movement of the first slider 23. In other embodiments, the first sliding block 23 and the first adjusting member 21 may also be connected together by a way of a sliding portion and a sliding groove, and the specific structure may refer to the connection way of the first sliding block 23 and the second sliding block 24.

One end of the fixing rod 253 is inserted into the receiving hole 2301 and fixed to the first slider 23. The first rotating member 251 and the second rotating member 252 are sleeved on the fixing rod 253, and are limited together with the fixing rod 253 in a threaded connection manner, so that the first rotating member 251 and the second rotating member 252 can move back and forth along the third direction. The second rotating member 252 is used to prevent the first rotating member 251 from rotating when an external force is applied, which results in a change in the position of the housing 3.

In other embodiments, the abutting member 25 can move back and forth along the third direction relative to the second sliding block 23, the abutting member 25 abuts against the housing 3, and the position of the housing 3 is adjusted by adjusting the position of the abutting member 25. The holding member 25 can be connected with the second sliding block 23 through a thread or a sliding groove, so that the holding member 25 can move relative to the second sliding block 23. For example, the supporting member 25 may only include the fixing rod 253, and the fixing rod 253 is supported by the housing 3.

The adjusting device 2 can be applied to any device requiring alignment adjustment, and the application of the adjusting device 2 is not limited.

The abutting part 25 of the adjusting device 2 is used for limiting the position of the second shell 3, the first sliding block 23 and the abutting part 25 are driven to move along the first direction by adjusting the first adjusting part 21, the second sliding block 24, the first sliding block 23 and the abutting part 25 are driven to move along the second direction by adjusting the second adjusting part 22, the abutting part 25 is driven to move along the third direction by adjusting, the position of the abutting part 25 is determined, and then the position of the second shell 3 can be limited, and the adjusting device 2 is simple in structure and easy to operate.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. An adjusting device is characterized by comprising a fixed frame, a first adjusting piece and a second adjusting piece assembled to the fixed frame, a first sliding block connected to the first adjusting piece, a second sliding block connected to the second adjusting piece, and a supporting piece connected to the first sliding block, wherein the first sliding block is connected to the second sliding block, the first adjusting piece drives the first sliding block and the supporting piece to move along a first direction, the second adjusting piece drives the first sliding block, the second sliding block and the supporting piece to move along a second direction, the supporting piece can move along a third direction, and the first direction is perpendicular to the second direction and the third direction.

2. The adjustment device of claim 1, wherein the fixed frame includes a rim enclosing a first receptacle and a second channel in communication, the first adjustment member is captured to the rim and partially within the first receptacle, the first slider is located within the first receptacle, the second slider is partially within the first receptacle, and the second adjustment member is captured to the rim and partially within the second channel.

3. The adjustment device of claim 2, wherein one of the fixed frame and the second slider is provided with a second sliding slot, and the other is provided with a protrusion located in the second sliding slot, and when the second slider moves in the second direction, the protrusion moves along the second sliding slot.

4. The adjustment device of claim 2, wherein one of the first slider and the second slider is provided with a first sliding slot, and the other is provided with a sliding portion located in the first sliding slot, and when the first slider moves in the first direction, the sliding portion moves along the first sliding slot.

5. The adjustment device of claim 4, wherein the first adjustment member is located on the same side of the adjustment device as the second adjustment member.

6. The adjusting device according to claim 5, wherein the first adjusting member includes a first operating portion, the second adjusting member includes a second operating portion, the first operating portion and the second operating portion are limited together with the frame by a threaded connection, the first operating portion is rotated to move the first adjusting member along the first direction to drive the first slider to move along the first direction, and the second operating portion is rotated to move the second adjusting member along the first direction to drive the second slider, the first slider and the abutting member to move along the second direction.

7. The adjustment device of claim 6, wherein the first adjustment member includes a first link to which the first operating portion is assembled, the first slider includes a guide slot, the adjustment device includes a rod portion assembled to the guide slot and the first link, and the rod portion moves along the guide slot when the first slider moves in the second direction.

8. The adjusting device according to claim 2, wherein the adjusting device includes a connecting rod connecting the second slider and the second adjusting member, the connecting rod is rotatable relative to the second slider and the second adjusting member, and the second adjusting member moves along the first direction, so that the connecting rod drives the second slider, the first slider and the abutting member to move along the second direction.

9. The adjustment device according to any one of claims 1 to 8, wherein the abutting member includes a fixed rod assembled to the first slider and a first rotating member assembled to the fixed rod, the first rotating member rotating relative to the fixed rod to move in the third direction.

10. A superconducting magnetic resonance imaging system comprising a superconducting magnet assembly, a housing and an adjustment arrangement as claimed in any one of claims 1 to 9 connecting the superconducting magnet assembly with the housing, the abutment cooperating with the housing to limit the position of the housing.