Cross laser lamp positioning and adjusting structure for magnetic resonance equipment

Abstract

The utility model discloses a cross laser lamp positioning and adjusting structure for magnetic resonance equipment, and relates to the technical field of magnetic resonance equipment. Comprising a fixing plate fixedly connected with a magnet of the magnetic resonance equipment, an adapter plate is fixed to the bottom of the fixing plate, and a laser lamp assembly is fixed to the bottom of the adapter plate through a locking screw; a four-point adjusting structure for adjusting the angle of the laser lamp assembly is also arranged between the laser lamp assembly and the adapter plate; the four-point adjusting structure adjusts the gap distance between the laser lamp assembly and the bottom of the adapter plate at four corresponding positions. According to the utility model, a four-point adjusting structure is adopted to replace a longitudinal adjusting and transverse adjusting complex structure adopted by a cross laser lamp in other patents, and the cross laser lamp has the advantages of simple structure, convenience in adjustment, low processing and manufacturing cost, accurate positioning and the like, so that the deviation between a scanning part and the center position of a magnet is small when a receiving coil enters the center of the magnet; and the scanning position precision can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance equipment, in particular to a cross laser light positioning and adjusting structure used for magnetic resonance equipment. Background Art

[0002] In magnetic resonance imaging equipment, a cross laser light is generally used to realize the positioning function of the scanning bed motion control. However, the fixed structure of the cross laser light is often affected by the deformation of the structural parts processing, or there is a defect that the cross laser light has a single adjustment direction. If the positioning of the cross laser light deviates, the scanning bed cannot correctly control the feeding distance of the scanning bed to make the receiving coil reach the center of the magnet (the best imaging position), thereby affecting the imaging quality.

[0003] Existing cross laser lights are generally installed on the shell or on the magnet. The installation method on the shell is easily affected by the deformation of the shell, which makes the cross laser cursor of the cross laser light tilted; the installation method on the magnet mostly adopts a longitudinal and transverse adjustment structure, which does not have the function of angle adjustment and has a complex structure and high processing cost. To this end, we provide a cross laser light positioning adjustment structure for magnetic resonance equipment. Utility Model Content

[0004] The utility model aims to provide a cross laser light positioning and adjusting structure for magnetic resonance equipment.

[0005] The technical problems solved by the utility model are:

[0006] How to achieve precise positioning and adjustment of the cross laser light beacon while reducing structural complexity.

[0007] The utility model can be implemented by the following technical scheme: a cross laser light positioning and adjustment structure for a magnetic resonance device, comprising a fixing plate fixedly connected to a magnet of the magnetic resonance device, an adapter plate fixed to the bottom of the fixing plate, and a laser light assembly fixed to the bottom of the adapter plate by a locking screw;

[0008] A four-point adjustment structure for adjusting the angle of the laser light assembly is also provided between the laser light assembly and the adapter plate; the four-point adjustment structure adjusts the gap distance between the laser light assembly and the bottom of the adapter plate at four corresponding positions;

[0009] A tooling plate fixed on the magnet is also provided directly below the laser light assembly, and a cross groove for calibration is provided in the center of the tooling plate.

[0010] A further technical improvement of the utility model is that the laser lamp assembly includes a sleeve, a cross laser lamp is mounted in the inner circular hole of the sleeve, a circular hole is provided at the bottom of the sleeve for the laser light to pass through, an end cover is threadedly connected to the top of the sleeve for abutting and limiting the cross laser lamp, and the sleeve is connected and fixed to the adapter plate by a locking screw.

[0011] A further technical improvement of the utility model is that a circular hole for routing the cross laser light is arranged at the center of the end cover, and a clearance hole for screw installation and routing the cross laser light is arranged at a corresponding position of the adapter plate.

[0012] A further technical improvement of the utility model is that the four-point adjustment structure includes four adjustment screws threadedly connected to the sleeve flange, the four adjustment screws are evenly distributed and the top of each adjustment screw abuts against the bottom of the adapter plate.

[0013] A further technical improvement of the utility model is that the four-point adjustment structure includes four rotating adjustment rods rotatably connected to the sleeve flange, four corresponding positions on the bottom of the adapter plate are provided with oblique bottom circular holes, and the top of the rotating adjustment rod is provided with an inclined surface which abuts and cooperates with the corresponding oblique bottom circular holes.

[0014] The further technical improvement of the utility model is that: the outer periphery of the bottom of the rotating adjustment rod is provided with a thread and a butterfly nut is threadedly connected, and a hexagonal wrench hole is opened at the center of the bottom end of the rotating adjustment rod.

[0015] A further technical improvement of the utility model is that the locking rotation direction of the butterfly nut is opposite to the locking rotation direction of the locking screw.

[0016] A further technical improvement of the utility model is that the adapter plate is set into a "Z" shape by bending the sheet metal.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The four-point adjustment structure is used to replace the complex longitudinal adjustment and lateral adjustment structure of the cross laser light used in other patents, which reduces the complexity of the structure and is conducive to improving the adjustment efficiency.

[0019] 2. The utility model has the advantages of simple structure, convenient adjustment, low processing and manufacturing cost, accurate positioning, etc., so that the deviation between the scanning part and the center of the magnet of the receiving coil is small when entering the center of the magnet, which helps to ensure the accuracy of the scanning position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall external structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the AA-direction cross-sectional structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structural connection of the second embodiment of the present utility model.

[0024] In the figure: 1. sleeve; 2. cross laser light; 3. end cover; 4. adapter plate; 5. fixing plate; 6. adjustment screw; 7. locking screw; 8. first fixing screw; 9. tooling plate; 10. second fixing screw; 11. rotating adjustment rod; 12. bearing; 13. butterfly nut; 14. hexagonal wrench hole; 201. oblique bottom round hole. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0026] Embodiment 1

[0027] See also Figure 1-2 As shown, a cross laser light positioning and adjustment structure for a magnetic resonance device includes a fixing plate 5 fixedly connected to a magnet, bolt mounting holes for fixing to the magnet of the magnetic resonance device are arranged on both sides of the fixing plate 5, and an adapter plate 4 is fixedly installed on the bottom of the fixing plate 5 by two second fixing screws 10; moreover, in order to improve the rigidity of the adapter plate 4, the adapter plate 4 adopts a sheet metal bending process, and its shape is "Z" shape.

[0028] A sleeve 1 is provided at the bottom of one side of the adapter plate 4 away from the fixed plate 5, and the small gap in the inner circular hole of the sleeve 1 fits the cross laser light 2, and the end face of the cross laser light 2 emitting the cross cursor rests on the bottom end face of the sleeve 1. A circular hole is reserved at the center of the bottom of the sleeve 1 for the cross laser light 2 to emit the cross laser cursor without obstruction. An end cover 3 is fitted on the top flange surface of the sleeve 1, and three first fixing screws 8 are used to fix the end cover 3 to the flange end face of the sleeve 1. At the same time, the lower surface of the end cover 3 presses the cross laser light 2 to prevent it from rotating inside the sleeve 1;

[0029] Furthermore, a circular through hole is provided at the center of the end cover 3 to facilitate the routing of the cross laser light 2, including the power line and the signal line; a clearance hole is also provided at the corresponding position of the adapter plate 4 for routing and installation and locking of the first fixing screw 8;

[0030] The flange of the sleeve 1 is provided with two symmetrical mounting holes and four threaded holes at equal angles. The inner threads of the four threaded holes of the sleeve 1 are all provided with adjusting screws 6, and the end of each adjusting screw 6 abuts against the lower surface of the adapter plate 4; locking screws 7 are provided in the two mounting holes, and the two locking screws 7 are threadedly connected to the threaded holes on the adapter plate 4, thereby fixing the sleeve 1 and the adapter plate 4 together.

[0031] More preferably, a tooling plate 9 is provided directly below the sleeve 1 and is fixed to the magnet of the magnetic resonance device. A cross groove is provided on the side of the tooling plate 9 opposite to the sleeve 1 for calibrating the cross laser mark.

[0032] During positioning and debugging, the locking screw 7 passes through the two mounting holes and is screwed into the corresponding threaded hole of the adapter plate 4 but is not tightened. By rotating the four adjusting screws 6, they are abutted against the lower surface of the adapter plate 4, and then the cross laser light 2 is powered on. After the cross laser light 2 projects a cross laser mark, the four adjusting screws 6 are adjusted to align and overlap the cross laser mark with the cross groove on the tooling plate 9, and then the locking screws 7 are tightened to complete the positioning adjustment.

[0033] Embodiment 2

[0034] like Figure 3 As shown, the adjusting screw 6 in the first embodiment is replaced by a rotating adjusting rod 11, which passes through the flange of the sleeve 1 and is connected to the sleeve 1 for relative rotation through a bearing 12; a thread is provided at the bottom of the rotating adjusting rod 11, and a butterfly nut 13 is connected to the external thread thereof for locking the rotating adjusting rod 11 on the sleeve 1 to limit its rotational freedom;

[0035] The top of the rotating adjustment rod 11 is arranged in the oblique bottom circular hole 201 opened at the corresponding position of the bottom of the adapter plate 4, and the top of the rotating adjustment rod 11 is arranged as an inclined surface and has an angle position so that the inclined surface is completely fitted with the bottom of the oblique bottom circular hole 201, and the top of the rotating adjustment rod 11 is in contact with the adapter plate 4;

[0036] Furthermore, a hexagonal wrench hole 14 is provided at the bottom end of the rotation adjustment rod 11 to facilitate angle adjustment; the locking rotation direction of the butterfly nut 13 is opposite to the locking rotation direction of the locking screw 7, ensuring that the rotation adjustment rod 11 will not easily rotate and loosen;

[0037] During positioning and debugging of this embodiment, the locking screw 7 passes through the two mounting holes and is screwed into the corresponding threaded hole of the adapter plate 4 but is not tightened. By rotating the four rotating adjustment rods 11, the contact position between the top and the oblique bottom circular hole 201 is changed, and then the cross laser light 2 is powered on. After the cross laser light 2 projects a cross laser mark, the four rotating adjustment rods 11 are adjusted to align the cross laser mark with the cross groove on the tooling plate 9, and then the butterfly nut 13 is tightened, and finally the locking screw 7 is tightened to complete the positioning adjustment. In this method, due to the matching relationship of the top inclined surface of the rotating adjustment rod 11, its height changes continuously, and there is no error caused by the thread gap, so the positioning adjustment is more accurate and it is not easy to loosen during use.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cross laser light positioning and adjustment structure for a magnetic resonance device, characterized in that: It comprises a fixing plate (5) fixedly connected to a magnet of a magnetic resonance device, an adapter plate (4) being fixed to the bottom of the fixing plate (5), and a laser light assembly being fixed to the bottom of the adapter plate (4) via a locking screw (7); A four-point adjustment structure for adjusting the angle of the laser light assembly is also provided between the laser light assembly and the adapter plate (4); the four-point adjustment structure adjusts the gap distance between the laser light assembly and the bottom of the adapter plate (4) at four corresponding positions; A tooling plate (9) fixed on the magnet is also provided directly below the laser light assembly, and a cross groove for calibration is provided at the center of the tooling plate (9).

2. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 1, characterized in that: The laser lamp assembly comprises a sleeve (1), a cross laser lamp (2) is mounted in the inner circular hole of the sleeve (1), a circular hole for laser light to pass through is provided at the bottom of the sleeve (1), an end cover (3) for abutting and limiting the cross laser lamp (2) is threadedly connected to the top of the sleeve (1), and the sleeve (1) is connected and fixed to the adapter plate (4) via a locking screw (7).

3. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 2, characterized in that: A circular hole for routing the cross laser light (2) is provided at the center of the end cover (3), and a clearance hole for screw installation and routing the cross laser light (2) is provided at a corresponding position of the adapter plate (4).

4. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 2, characterized in that: The four-point adjustment structure comprises four adjustment screws (6) threadedly connected to the flange of the sleeve (1); the four adjustment screws are evenly distributed and the top of each adjustment screw (6) abuts against the bottom of the adapter plate (4).

5. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 2, characterized in that: The four-point adjustment structure comprises four rotating adjustment rods (11) rotatably connected to the flange of the sleeve (1); four corresponding positions on the bottom of the adapter plate (4) are provided with oblique bottom circular holes (201); the top of the rotating adjustment rod (11) is provided with an inclined surface which abuts against the corresponding oblique bottom circular holes (201).

6. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 5, characterized in that: The outer periphery of the bottom of the rotating adjustment rod (11) is provided with a thread and is threadedly connected with a butterfly nut (13), and a hexagonal wrench hole (14) is provided at the center of the bottom end of the rotating adjustment rod (11).

7. A cross laser light positioning and adjustment structure for a magnetic resonance device according to claim 6, characterized in that: The locking rotation direction of the butterfly nut (13) is opposite to the locking rotation direction of the locking screw (7).

8. The cross laser light positioning and adjustment structure for magnetic resonance equipment according to claim 1, characterized in that: The adapter plate (4) is arranged into a "Z" shape by bending the sheet metal.

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