Metal detection device for nuclear magnetic resonance examination

Abstract

The utility model relates to the technical field of nuclear magnetic resonance examination, and discloses a metal detection device for nuclear magnetic resonance examination, which adopts an electric lifting type working mode, and a detection mechanism is mounted on the side of a supporting upright post in a lifting manner under the matched driving of a driving motor and a driving screw rod; the driving motor is matched with the driving lead screw to perform lifting displacement driving on the detector of the device, manual displacement driving of the detector can be replaced, and compared with a traditional handheld detection device, the device has higher detection efficiency and use convenience, the detection part of the device is of a semi-open structure, and the detection efficiency is improved. The main detector and the auxiliary detector are used for detecting metal objects on the upper portion of the body of a patient from the rear portion and the side face respectively, detection and positioning of the metal objects can be rapidly completed in the detection process in cooperation with the detection warning lamp, and the auxiliary detector is arranged to be of a turnover structure; and in the detection process, the machine can be stopped in real time to search and clear the metal objects through upturning storage, and the clearing operation of the metal objects can be efficiently completed.

Description

Technical Field

[0001] This utility model relates to the field of nuclear magnetic resonance imaging (NMR) examination technology, specifically to a metal detection device for NMR examination. Background Technology

[0002] Nuclear magnetic resonance (NMR) utilizes the principle of nuclear magnetic resonance. Based on the different attenuations of the released energy in different structural environments within a substance, and by detecting the emitted electromagnetic waves through an external gradient magnetic field, the location and type of atomic nuclei that make up the object can be determined. Based on this, an image of the internal structure of the object can be drawn, and it is widely used in the field of medical testing.

[0003] Since MRI equipment requires a strong magnetic field to operate, magnetically conductive metal objects must be removed from the patient's upper body before the examination to prevent them from flying out and damaging the equipment. Traditional metal detection devices are handheld and require manual movement for detection, which is inefficient, labor-intensive, and inconvenient. Therefore, a metal detection device for MRI examination is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a metal detection device for nuclear magnetic resonance imaging (MRI) to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal detection device for nuclear magnetic resonance examination, comprising a frame mechanism and a detection mechanism. The frame mechanism includes a support base and a support column. The support column is vertically fixedly installed on the upper part of the support base. A drive motor and a drive screw are provided on the upper part of the support column. The detection mechanism is lifted and lowered on the side of the support column under the combined drive of the drive motor and the drive screw.

[0006] The detection mechanism includes a main detector, a secondary detector, and a drive slide. The main detector is connected to the drive screw via the drive slide. The secondary detectors are installed in pairs, with two sets of secondary detectors flipped and installed on both ends of the main detector. Both the main detector and the secondary detectors are equipped with detection warning lights on their upper parts. Limiting components are provided at the flipped installation points of the secondary detectors.

[0007] Preferably, the bottom of the support base is provided with a support pad, the upper part of the support base is provided with a standing mark, and the bottom end of the support column is fixedly installed to the upper rear side of the support base by bolts.

[0008] Preferably, the support column is provided with a lifting slide groove in the middle, the drive screw is rotatably installed in a vertical position on the inner side of the lifting slide groove, the drive motor is fixedly installed on the upper end of the support column by bolts, and the shaft end of the drive motor is fixedly installed on the upper end of the drive screw.

[0009] Preferably, the aforementioned drive slide is fixedly installed on the rear middle of the main detector by bolts, the rear part of the drive slide is slidably fitted into the inner side of the lifting slide groove, and the drive slide is threadedly installed with the drive screw through the screw hole provided in the middle.

[0010] Preferably, the rear end of the aforementioned secondary detector is fixedly mounted with a flip support, and the end side of the main detector is fixedly mounted with a mounting protrusion. The flip support is rotatably mounted to the end side of the mounting protrusion via a shaft post, and a connecting bolt is installed through the middle of the shaft post of the flip support.

[0011] Preferably, a limiting protrusion is fixedly installed on the end side of the aforementioned flip support, and a flip limiting groove is provided on the end side of the mounting protrusion, with the limiting protrusion movably fitted into the inner side of the flip limiting groove.

[0012] Preferably, the aforementioned limiting component is used for the flipping limiting of the sub-detector. The limiting component includes a ball-head top post, a spring, and a push pin. The end side of the flipping support is provided with a top post mounting hole. The ball-head top post is movably inserted into the inner side of the top post mounting hole. The push pin is fastened to the outer side of the top post mounting hole by threads. The spring is abutted between the ball-head top post and the push pin. After installation, the ball head of the ball-head top post is fitted into the spherical groove provided in the flipping limiting groove.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This metal detection device employs an electric lifting mechanism, utilizing a drive motor and a drive screw to move the detector up and down. This replaces manual operation of the detector and offers higher detection efficiency and ease of use compared to traditional handheld devices. The device's detection section features a semi-open structure, with the main and secondary detectors detecting metal objects on the upper part of the patient's body from the rear and side, respectively. The detection warning light allows for rapid location of metal objects during the detection process. The secondary detector has a flip-up design, allowing for immediate shutdown and removal of metal objects during the detection process. This convenient design eliminates the need for repeated checks and object marking, efficiently removing metal objects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the secondary detector in its stored state according to this utility model;

[0018] Figure 3 This is a schematic diagram of the detection lifting drive structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the detector installation structure of this utility model;

[0020] Figure 5 For the present utility model Figure 4 Schematic diagram of the structure of region A in the middle.

[0021] Explanation of reference numerals in the attached diagram: 1. Support base; 2. Support column; 3. Drive motor; 4. Drive screw; 5. Main detector; 6. Secondary detector; 7. Drive slide; 8. Support base pad; 9. Standing marker; 10. Flip support; 11. Ball head top column; 12. Spring; 13. Push pin; 14. Flip limit groove; 15. Connecting pin; 16. Detection warning light. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: a metal detection device for nuclear magnetic resonance imaging (MRI) examination, comprising a frame mechanism and a detection mechanism. The frame mechanism is used for mounting and supporting the detection mechanism. The frame mechanism includes a support base 1 and a support column 2. The support base 1 is used for overall support of the device, as shown in the attached figure. Figure 1 As shown, in order to improve the stability of the device, a support pad 8 is provided at the bottom of the support base 1, and a standing marker 9 is provided at the top of the support base 1 to facilitate the patient's standing and positioning.

[0026] The bottom end of the support column 2 is fixedly installed to the upper rear side of the support base 1 by bolts. The support column 2 is vertically fixed to the upper part of the support base 1. To facilitate the operation of the detection mechanism, a drive motor 3 and a drive screw 4 are provided on the upper part of the support column 2. To facilitate the sliding guidance of the detection mechanism, as shown in the attached figure... Figure 1 As shown, a lifting slide is provided in the middle of the support column 2. The drive screw 4 is vertically and rotatably installed inside the lifting slide. The drive motor 3 is fixedly installed on the upper end of the support column 2 by bolts. The shaft end of the drive motor 3 is fixedly installed on the upper end of the drive screw 4. The detection mechanism is lifted and installed on the side of the support column 2 under the combined drive of the drive motor 3 and the drive screw 4. It adopts an electric lifting working mode. The drive motor 3 and the drive screw 4 are used to drive the detector of the device to lift and move. It can replace the manual displacement of the detector. Compared with the traditional handheld detection device, it has higher detection efficiency and ease of use.

[0027] The detection mechanism is used to detect magnetic metal objects on the upper part of a patient's body. The mechanism includes a main detector 5, a secondary detector 6, and a drive slide 7, as shown in the attached diagram. Figure 3 As shown, the drive slide 7 is bolted to the rear center of the main detector 5. The rear part of the drive slide 7 is slidably fitted into the inner side of the lifting slide groove. The drive slide 7 is threadedly installed with the drive screw 4 through a screw hole in the middle. The main detector 5 is connected to the drive screw 4 through the drive slide 7 to realize the lifting drive of the detector. Both the main detector 5 and the auxiliary detector 6 are inductive metal detectors in the prior art. The auxiliary detector 6 is used for detecting metal objects on the side, as shown in the attached figure. Figure 4As shown, the secondary detectors 6 are arranged in pairs, with two sets of secondary detectors 6 flipped and installed on both ends of the main detector 5. To facilitate object positioning, detection warning lights 16 are installed on the upper part of both the main detector 5 and the secondary detectors 6. The detection unit adopts a semi-open structure. The main detector 5 and the secondary detectors 6 detect metal objects on the upper part of the patient's body from the rear and the side, respectively. With the assistance of the detection warning lights 16, the detection and positioning of metal objects can be completed quickly during the detection process. The secondary detectors 6 adopt a flip-up structure, which can be flipped up and stored during the detection process to stop the machine in real time for the retrieval and removal of metal objects. It is convenient to use and does not require multiple re-inspections or object marking, and can efficiently complete the removal of metal objects.

[0028] To facilitate the flipping installation of the secondary detector 6, see attached... Figure 5 As shown, a flip support 10 is fixedly installed at the rear end of the sub-detector 6, and a mounting protrusion is fixed at the end side of the main detector 5. The flip support 10 is rotatably installed through a shaft and a shaft hole at the end side of the mounting protrusion. In order to connect and support the flipping of the sub-detector 6, a connecting bolt 15 is installed through the middle of the shaft of the flip support 10. In order to limit the flipping angle of the sub-detector 6, a limiting protrusion is fixedly installed at the end side of the flip support 10. A flipping limiting groove 14 is provided at the end side of the mounting protrusion. The limiting protrusion is movably fitted into the inner side of the flipping limiting groove 14, which can limit the flipping angle of the sub-detector 6.

[0029] To facilitate the flipping and positioning of the secondary detector 6, a limiting component is provided at the flipping mounting location of the secondary detector 6. The limiting component is used to limit the flipping of the secondary detector 6. The limiting component includes a ball-head top post 11, a spring 12, and a push-bolt post 13. To facilitate the installation and connection of the ball-head top post 11, a top post mounting hole is provided on the end side of the flipping support 10. The ball-head top post 11 is movably inserted and installed inside the top post mounting hole. The push-bolt post 13 is fastened to the outer hole side of the top post mounting hole by threads. The spring 12 is abutted between the ball-head top post 11 and the push-bolt post 13. After installation, the ball head of the ball-head top post 11 is fitted into the spherical groove provided in the flipping limiting groove 14. The elastic snap-fit ​​structure can stably snap and position the flipped secondary detector 6.

[0030] In terms of working principle or structural principle, when in use, the device is in its initial state, with the main detector 5 and auxiliary detector 6 at their highest positions. The operator stands on the upper part of the support base 1 with their back to the support column 2 and their arms folded up. The operator then flips and unfolds the auxiliary detectors 6 on both sides, and then starts the device. Driven by the drive motor 3, the main detector 5 and auxiliary detector 6 move down synchronously to detect metal objects on the patient's whole body. When a metal object is detected, the detection warning light 16 on the upper part of the corresponding detector flashes to remind the operator, and the detector stops moving. The operator initially determines the location of the object based on the flashing of the detection warning light 16. For example, if the detection warning light 16 on the left and rear flashes, it is determined that the metal object is located on the left rear side of the patient's body. Then, the operator flips and unfolds the auxiliary detector 6 on the left side to store it, and searches for and removes the metal object on the upper part of the patient's body. After that, the auxiliary detector 6 is flipped back to its original position, and the device is started to continue moving to perform detection. When the detector reaches the lower stop position, it moves up to reset. During the upward movement, a second re-inspection is completed, and the detection work is finished.

[0031] In summary, this metal detection device adopts an electric lifting operation mode. The drive motor 3, together with the drive screw 4, drives the detector of the device to move up and down, which can replace manual operation of the detector. Compared with traditional handheld detection devices, it has higher detection efficiency and ease of use. Furthermore, the detection part of the device adopts a semi-open structure. The main detector 5 and the auxiliary detector 6 detect metal objects on the upper part of the patient's body from the rear and the side, respectively. With the detection warning light 16, the detection and positioning of metal objects can be quickly completed during the detection process. The auxiliary detector 6 adopts a flip-up structure. During the detection process, the device can be stopped in time by flipping it up for storage to find and remove metal objects. It is convenient to use and does not require multiple re-inspections or object marking, and can efficiently complete the removal of metal objects.

[0032] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A metal detection device for nuclear magnetic resonance imaging (MRI), comprising a frame mechanism and a detection mechanism, characterized in that: The frame mechanism includes a support base (1) and a support column (2). The support column (2) is fixedly installed on the upper part of the support base (1) in an upright position. A drive motor (3) and a drive screw (4) are provided on the upper part of the support column (2). The detection mechanism is lifted and installed on the side of the support column (2) under the combined drive of the drive motor (3) and the drive screw (4). The detection mechanism includes a main detector (5), a secondary detector (6), and a drive slide (7). The main detector (5) is connected to the drive screw (4) via the drive slide (7). The secondary detectors (6) are arranged in pairs, with the two sets of secondary detectors (6) flipped and installed on both ends of the main detector (5). Both the main detector (5) and the secondary detectors (6) are equipped with detection warning lights (16). Limiting components are provided at the flipped installation location of the secondary detectors (6).

2. The metal detection device for nuclear magnetic resonance examination according to claim 1, characterized in that: The bottom of the support base (1) is provided with a support pad (8), and the upper part of the support base (1) is provided with a standing mark (9). The bottom end of the support column (2) is fixedly installed to the upper rear side of the support base (1) by bolts.

3. The metal detection device for nuclear magnetic resonance examination according to claim 2, characterized in that: The support column (2) is provided with a lifting slide groove in the middle. The drive screw (4) is rotatably installed in a vertical position on the inner side of the lifting slide groove. The drive motor (3) is fixedly installed on the upper end of the support column (2) by bolts. The shaft end of the drive motor (3) is fixedly installed on the upper end of the drive screw (4).

4. A metal detection device for nuclear magnetic resonance imaging according to claim 3, characterized in that: The drive slide (7) is fixedly installed on the rear middle of the main detector (5) by bolts. The rear part of the drive slide (7) is slidably fitted into the inner side of the lifting slide groove. The drive slide (7) is threadedly installed with the drive screw (4) through the screw hole in the middle.

5. A metal detection device for nuclear magnetic resonance imaging according to claim 1, characterized in that: The rear end of the auxiliary detector (6) is fixedly mounted with a flip support (10), and the end side of the main detector (5) is fixed with a mounting boss. The flip support (10) is rotatably mounted with the shaft hole on the end side of the mounting boss through a shaft column. A connecting bolt (15) is installed through the middle of the shaft column of the flip support (10).

6. A metal detection device for nuclear magnetic resonance imaging according to claim 5, characterized in that: The end side of the flip support (10) is fixedly installed with a limiting protrusion, and the end side of the mounting protrusion is provided with a flip limiting groove (14). The limiting protrusion is movably fitted into the inner side of the flip limiting groove (14).

7. A metal detection device for nuclear magnetic resonance imaging according to claim 6, characterized in that: The limiting component is used for the flipping limiting of the sub-detector (6). The limiting component includes a ball-head top post (11), a spring (12), and a push pin (13). The flipping support (10) has a top post mounting hole on its end side. The ball-head top post (11) is movably inserted into the inner side of the top post mounting hole. The push pin (13) is fastened to the outer side of the top post mounting hole by threads. The spring (12) is abutted between the ball-head top post (11) and the push pin (13). After installation, the ball head of the ball-head top post (11) is fitted into the spherical groove in the flipping limiting groove (14).

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