KR102586287B1 - MRI electromagnetic wave shield door with magnetic metal detection function - Google Patents

Abstract

The present invention relates to a shield door installed in an MRI shield room, etc., and more specifically, to efficiently shield the inside of the shield room and remove steps on the floor, thereby facilitating entry and exit of wheelchairs, beds, etc., and using a magnetic field when entering and exiting. This relates to an MRI shield door with a magnetic metal detection function that can detect the presence of metal and prevent safety accidents caused by strong magnetic fields during MRI examinations.
For this purpose, the MRI shield door with a magnetic metal detection function according to an embodiment of the present invention includes a shielded door frame installed in the shield room to provide an entrance passage, and an openable and closed door frame installed in the shielded door frame to facilitate entry and exit into the shield room. It includes a shield door capable of shielding the interior, and a magnetic field detector installed in the inner space of the shield door frame to detect metal from entering and exiting people using a magnetic field.

Description

MRI electromagnetic wave shield door with magnetic metal detection function}

The present invention relates to an electromagnetic wave shield door installed in an MRI shield room. More specifically, the present invention relates to an electromagnetic wave shield door installed in an MRI shield room. More specifically, it efficiently shields the inside of the shield room while eliminating steps on the floor to facilitate entry and exit of wheelchairs, beds, etc., and uses a magnetic field when entering and exiting. This relates to an MRI shield door with a magnetic metal detection function that can prevent safety accidents caused by strong magnetic fields during MRI examinations by detecting in advance if a (patient) is in possession of metal and allowing metal substances to be detected in advance. .

In general, MRI is a magnetic resonance imaging device that can take arbitrary tomographic images of living organisms using a magnetic field.

Such MRI forms a strong magnetic field using a superconductor, and the magnetic field can damage electronic equipment or have negative effects on the outside, so a separate shield room is installed and the examination is performed inside the shield room.

At this time, the inside of the shield room must be accessible through the door, and the inside of the shield room must be completely shielded when the door is closed.

However, a step was formed at the bottom of the door for shielding, making it difficult for the examiner to enter and exit through the step. In particular, when an examinee with limited mobility was accessed by a wheelchair or bed, there was a problem in that the step made entry difficult.

In relation to this, prior literature 1 (registered patent 10-1157138 semi-automatic shielding door for MA shield room) discloses a configuration that provides a stepless entrance and enables shielding.

However, in Prior Literature 1, it is not possible to detect if an entrant is in possession of metal, so there is a high possibility of a safety accident occurring due to metal objects such as scissors, knives, or oxygen cylinders that are not yet removed.

Accordingly, it is necessary to individually check for metal possession after entry, which causes the problem of delay in inspection time.

In addition, if a metal detection means is installed separately, installation costs increase and space utilization becomes difficult.

Prior Document 1 (Registered Patent 10-1157138 Semi-automatic shielding door for MRI shield room)

The present invention was devised to solve the above problems, and its purpose is to provide an MRI shield door with a magnetic metal detection function that facilitates entry and exit of a wheelchair or bed by configuring the shield room shield door in a stepless structure.

In addition, by installing a magnetic field detector on the door frame, metal can be detected upon entry and exit, allowing safe inspection without the need for separate metal detection. Additionally, by installing a magnetic field detector using the door frame, space utilization can be increased. The purpose is to provide an MRI shield door with a detection function.

An MRI electromagnetic shield door with a magnetic metal detection function according to an embodiment of the present invention to solve the above problems includes a shielded door frame installed in a shield room to provide an access passage, and an openable and closed door installed on the shielded door frame to allow entry and exit. It is characterized by including a shield door that can shield the inside of the shield room while facilitating and a magnetic field detector installed in the inner space of the shielded door frame and capable of detecting metal from the entering person using a magnetic field sensor.

Here, the shield door frame is provided with a lower shield plate that forms the same surface as the floor without steps at the bottom and can shield the lower part, and forms a shield film through electricity connection with the shield door when the shield door is closed along both sides and the top. A conductive groove is formed, and the shield door includes a shielding frame that is inserted into and coupled to the conduction groove to conduct electricity to the conduction groove and form a shielding film.

In addition, on both sides of the shielded door frame, a plurality of magnetic material position indicator lights are provided at regular intervals to indicate the height at which the magnetic material is detected, and on both sides of the shielded door frame, there are magnetic field status ready lights that can display the conditions for passage. is provided, and includes a door opening position detection sensor that suppresses the detection signal to offset unnecessary changes in the magnetic field detected according to changes in the magnetic field when the shield door is opened, and the magnetic field detector is provided at the lower part of the shielded door frame so that the inspector can enter and exit. It includes a human body detection sensor that detects a human body detection sensor and a magnetic body detection sensor that detects a magnetic substance carried by an entrant, wherein the magnetic substance detection sensor detects an empty internal space of the shielded door frame in the inner part where the visitor enters the shielded door frame forming a rectangular tube shape. The magnetic body detection sensor can be installed through the magnetic body detection sensor installation hole by forming a magnetic body detection sensor installation hole. The magnetic body detection sensor is provided to be detachable from the magnetic body detection sensor installation hole in a one-touch method, and the magnetic body detection sensor is installed inside the magnetic body detection sensor installation hole. Sensor coupling terminals are provided at the upper and lower parts where the detection sensor is detachable, and the sensor coupling terminal is provided in the form of an elastic body forming a curved surface at the connection terminal to which the control system and the power means are connected and the connection terminal, and is provided at the upper part of the magnetic body detection sensor. and a lower portion including an elastic contact terminal that is fitted and electrically connected by elasticity, and the magnetic material detection sensor has a removable contact groove that is formed in a groove shape corresponding to the elastic contact terminal and is fitted and coupled to the elastic contact terminal. The detachable contact groove is formed in the form of a terminal electrically connected to the elastic contact terminal and is coupled to and electrically connected to the elastic contact terminal.

The MRI shield door with a magnetic metal detection function according to an embodiment of the present invention has a stepless structure, making it easy to enter and exit a wheelchair or bed.

In addition, by installing a magnetic field detector on the door frame of the shield door, it is possible to shorten the time required for the inspection by checking whether the inspector is in possession of metal upon entry.

In addition, installing a magnetic field detector using the door frame of the shield door has the effect of increasing space utilization.

Figure 1 is an overall perspective view of an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.
Figure 3 is a state diagram of the use of a human body detection sensor in an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.
Figure 4 is a partially enlarged perspective view showing in detail the state in which the magnetic field detector is built into the door frame in the MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.
Figure 5 is an operation state diagram showing the area where the magnetic field detector detects magnetic material from the entering person in the MRI shield door with magnetic metal detection function according to an embodiment of the present invention.
Figure 6 is a plan view showing the detection direction of the human body detection sensor in the metal detection system for MRI shield room according to an embodiment of the present invention.
Figure 7 is a cross-sectional view showing a state in which the lower shield driving part is provided on the shield door in the metal detection system for MRI shield room according to an embodiment of the present invention.
Figure 8 is an embodiment showing a configuration in which a magnetic body detection sensor is attached and detached in a one-touch method in a metal detection system for an MRI shield room according to an embodiment of the present invention.

The present invention has a magnetic field detector built into the MRI shield door, enabling inspection of metal possession during the entry and exit process without a separate installation space. In particular, space utilization can be increased by installing a magnetic field detector using the shield door frame. It is characterized by

Figure 1 is an overall perspective view of an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.

Referring to FIG. 1, the present invention includes a shielding door frame 100 that shields an MRI shield room, a shield door 200 provided to be openable and closed in the shielding door frame 100, and an internal space of the shielding door frame 100. It is installed and consists of a magnetic field detector 300 that detects whether an entrant is in possession of metal.

As a result, it is possible to test for metal possession upon entering the MRI shield room without the need to install separate equipment to check for metal possession upon entry through the door frame.

Figure 2 is an exploded perspective view of an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.

Referring to FIG. 2, the shield door frame 100 has a conductive groove 110 formed along the outer circumference of the shield door 200, where the shield door 200 opens and closes.

In addition, the lower part of the shield door frame 100 is flat with a stepless structure, and the lower shield plate 120 is in contact with the lower part of the shield door 200 when the shield door 200 is closed and can shield the inside of the shield room. This is provided.

Here, the energization groove 110 is provided with a door frame side finger plate 111 that can be shielded by energizing the shielding door frame 100 in a closed state.

At this time, the door frame side finger plate 111 is provided with a contact portion 111a that contacts the shield door 200 when it is closed and is electrically conductive to shield the inside of the shield room.

Meanwhile, a door opening position detection sensor 130 is provided on the upper part of the shielded door frame 100 to block magnetic field detection depending on the degree of opening of the shielded door 200 when the shielded door 200 is opened.

The door opening position sensor 130 changes the magnetic field depending on the position when the shield door 200 is opened, and the magnetic field is detected by the magnetic body detection sensor 320. If the magnetic field is detected without an actual person passing through, Since accurate detection is difficult, magnetic field detection can be controlled to block until the shield door 200 is completely opened.

And on both sides of the shielding door frame 100, a magnetic body position indicator light ( 140) is provided.

The shield door 200 is provided with a shielding frame 210 inserted into the conduction groove 110 along the outer circumference.

In addition, a door side finger plate 220 is provided at the lower part of the shield door 200, which contacts the lower shield plate 120 in the shield door frame 100 and is electrically conductive to shield the lower part of the shield door 200.

Inside the shielding door frame 100, a plurality of magnetic field detectors 300 are provided at regular intervals.

As a result, the inside of the shield room is effectively shielded, and the shielding door frame 100 itself can detect whether the entering person possesses a magnetic material upon entry or exit without the need for separate magnetic material inspection equipment.

Figure 3 is a diagram showing the use of a human body detection sensor in an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.

Referring to FIG. 3, the magnetic field detector 300 includes a human body detection sensor 310 that detects the entry and exit of a person entering and leaving the shield room, and a magnetic body detection sensor 320 that detects a magnetic body held by the person entering the shield room. It is composed.

The human body detection sensor 310 detects when an entrant approaches within a certain distance, and at the same time, the magnetic force detection buzzer 150, which is provided on the upper part of the shielded door frame 100 and whose volume is adjusted according to the strength of the magnetic field, operates to notify of danger. .

Here, magnetic field status readiness lights 190 are provided on the left and right sides of the shielding door frame 100 to visually check whether the magnetic field is ready for inspection.

The magnetic field status preparation light 190 displays a green light, which is an indication of passage permission, when preparations for performing magnetic field detection are completed, and displays a red light when preparations for magnetic field detection are not complete, so that the magnetic field state before entering the magnetic field preparation light 190 is displayed. You can visually check whether you are ready to perform detection.

At this time, when the passage permission sign is lit on the magnetic field status preparation light 190 and entry is detected, the entry detection sensor 311 detects it, and the magnetic force intensity indicator lights 160 provided on the upper left and right sides gradually increase according to the strength of the magnetic field. It is displayed and includes a passage detection sensor 312 that detects that the visitor has passed when the visitor passes the shielded door frame 100 and moves away by a certain distance or more.

As a result, the safety of visitors and equipment can be promoted by detecting magnetic fields before entry and passage of visitors.

Figure 4 is a partially enlarged perspective view showing in detail the state in which the magnetic field detector is built into the door frame in the MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.

Referring to FIG. 4, the magnetic field detector 300 forms a magnetic body detection sensor installation hole 170 in the inner portion of the shielding door frame 100, which has a rectangular tube shape, through which a person enters and exits. ) The magnetic field detector 300 can be installed through.

The magnetic field detector is installed using the empty internal space of the shielded door frame 100, and can detect magnetic substances from visitors through the magnetic substance detection sensor installation hole 170 penetrated in the direction in which visitors enter and exit.

Figure 5 is an operation state diagram showing a state in which a magnetic field detector detects a magnetic body from an entering person in an MRI shield door with a magnetic metal detection function according to an embodiment of the present invention.

Referring to FIG. 5, when a person passes by, the magnetic body detection sensor 320 divides the passage position of the person into several areas and detects them.

At this time, the divided area is shown as 12 areas, and each area is indicated with a number and explained.

For example, when a magnetic body is detected in area 3 on the left side of the visitor when the visitor approaches or passes through the door, the magnetic body location indicator light 140 and the magnetic force strength indicator lamp 160 turn on on the left side according to the detected signal. If the sensing position is the middle point in the height direction, the magnetic material position indicator light 140 turns on depending on the sensing area at the upper or lower middle.

In addition, the magnetic force intensity indicator light 160 lights up differently depending on the strength of the magnetic body when a magnetic body is detected at the midpoint between the left and right sides, making it possible to easily determine the location of the magnetic body.

Meanwhile, the magnetic position indicator light 140 is further provided with a magnetic position indicator beam 330 capable of irradiating a beam toward the person passing through the shielded door frame 100.

The magnetic position indicator beam 330 irradiates a beam toward the visitor at the position where the magnetic position indicator light 140 is turned on, directly and brightly indicating the position of the metal, making it easier to identify the position of the metal even in dark situations. You can do it.

As a result, the location of the magnetic material can be easily identified with the naked eye, and the identified magnetic material can be immediately removed to prevent safety accidents or device malfunctions during MRI examinations.

Figure 6 is a plan view showing the detection direction of the human body detection sensor in the metal detection system for MRI shield room according to an embodiment of the present invention.

Referring to FIG. 6, the human body detection sensor 310 emits a laser in the horizontal direction in the direction in which the visitor enters at the position where the visitor enters, detects the visitor approaching the shielded door frame 100 before entering, and The magnetic body detection sensor 320 can be operated in advance.

And, at the point where the visitor passes through the shielded door frame 100, lasers are emitted in the same lateral direction but at intervals, so that when the visitor leaves the shielded door frame 100, the power can be cut off after a certain period of time.

As a result, the magnetic field detector 300 is operated only when a person enters the room and does not detect the magnetic field when the person leaves the room, thereby minimizing the user's fatigue.

Figure 7 is a cross-sectional view showing a state in which a lower shield driving unit is provided on the shield door in the metal detection system for an MRI shield room according to an embodiment of the present invention.

Referring to FIG. 7, the lower part of the shield door 200 is spaced apart from the lower shield plate when opening and closing the shield door 200, and there is a door side finger plate to facilitate opening and closing and for inspection when the shield door 200 is closed. A lower shielding drive unit 230 is provided that can shield the lower part by bringing the 220 into close contact with the lower shielding plate 120.

The lower shield drive unit 230 operates up and down at the top of the door side finger plate 220 and includes an adhesion member 231 that can adhere the door side finger plate 220 to the bottom when the shield door 200 is closed. ) and a close contact cylinder 232 provided on the upper part of the close contact member 231 and driving the close contact member 231 to move up and down.

For this reason, the shield door 200 is opened and closed smoothly, but when the shield door 200 is kept closed for inspection, the door side finger plate 220 is brought into close contact with the lower shield plate 120 to close the shield door 200. The lower part of the can be effectively shielded.

Figure 8 is an embodiment diagram showing a configuration in which a magnetic body detection sensor is attached and detached by a one-touch method in a metal detection system for an MRI shield room according to an embodiment of the present invention.

Referring to FIG. 8, in the present invention, the magnetic body detection sensor 320 can be provided to be detachable from the magnetic body detection sensor installation hole 170 in a one-touch manner.

At this time, sensor coupling terminals 180 are provided inside the magnetic body detection sensor installation hole 170 at the upper and lower parts where the magnetic body detection sensor 320 is detached.

The sensor coupling terminal 180 is provided in the form of a connection terminal 181 to which the control system and the power means are connected, and an elastic body forming a curved surface at the connection terminal 181, so that the upper and lower sides of the magnetic body detection sensor 320 are elastic. It is configured to include an elastic contact terminal 182 that is inserted and electrically connected.

In addition, a detachable contact groove 321 is formed in the magnetic body detection sensor 320, which has a groove shape corresponding to the elastic contact terminal 182 and is inserted into and coupled to the elastic contact terminal 182.

The detachable contact groove 321 is in the form of a terminal electrically connected to the elastic contact terminal 182.

When the magnetic material detection sensor 320 is coupled to the detachable contact groove 321, the elastic contact terminal 182 is pressed and deformed when the part excluding the detachable contact groove 321 is coupled, and then the detachable contact groove 321 is formed. When the positions of the elastic contact terminal 182 and the elastic contact terminal 182 are aligned, the elastic contact terminal 182 is restored to its original form by elasticity and is inserted into the detachable contact groove 321 to be electrically connected.

Because of this, the magnetic body detection sensor 320 can be easily attached and detached, and the magnetic body detection sensor 320 that malfunctions or is broken can be easily replaced, making maintenance and repairs easy.

The present invention, made as described above, installs a magnetic field detector directly on the shielding door frame of an existing MRI shield room, making space utilization easy as there is no need to install a separate magnetic field detector, and can be constructed using an existing shielding door frame, making construction simple. , there is no need for people to pass through a separate magnetic field detector when entering and exiting, thereby shortening the time required for entry and exit.

100: Shielded door frame 110: Electricity groove
111: Door frame side finger plate 111a: Contact portion
120: Lower shield plate 130: Door opening position detection sensor
140: Magnetic position indicator light 150: Magnetic force detection buzzer
160: Magnetic force intensity indicator 170: Magnetic body detection sensor installation hole
180: sensor coupling terminal 181: connection terminal
182: Elastic contact terminal 190: Magnetic field status ready light
200: Shield door
210: Shielding frame 220: Door side finger plate
230: Lower shielding driving unit 231: Adhesion member
232: Close cylinder 300: Magnetic field detector
310: human body detection sensor 311: entry detection sensor
312: Passage detection sensor 320: Magnetic body detection sensor
321: Detachment contact groove 330: Magnetic material position indication beam

Claims (3)

A shielded door frame (100) installed in the shield room to provide an access passage;
A shield door 200 that is installed to be openable and closed on the shield door frame 100 and can shield the inside of the shield room while facilitating entry and exit; and
In including a magnetic field detector 300 installed in the inner space of the shielded door frame 100 and capable of detecting metal from the entering person using a magnetic field sensor,
The shield door frame 100 is provided with a lower shield plate 120 at the bottom that forms the same surface as the floor without steps and can shield the lower part, and when the shield door 200 is closed along both sides and the top, the shield door A conduction groove 110 that can form a shielding film is formed through conduction with (200),
The shield door 200 includes a shielding frame 210 that is inserted into and coupled to the conduction groove 110 to conduct electricity to the conduction groove 110 and can form a shielding film,
On both sides of the shielding door frame 100, a plurality of magnetic material position indicator lights 140 are provided at regular intervals to indicate the height at which the magnetic material is detected, and on both front sides of the shielding door frame 100, conditions for passage are provided. It is equipped with a magnetic field status ready light (190) that can display, and a door opening position detection sensor (130) that suppresses the detection signal to offset unnecessary magnetic field changes detected according to changes in the magnetic field when the shield door (200) is opened. Including,
The magnetic field detector 300 is provided at the lower part of the shielded door frame 100 and includes a human body detection sensor 310 that detects the entrance of an examiner and a magnetic body detection sensor 320 that detects a magnetic body carried by the entering person,
The magnetic body detection sensor 320 forms a magnetic body detection sensor installation hole 170 using the empty inner space of the shielding door frame 100 in the inner part of the shielding door frame 100, which has a rectangular tube shape, through which people enter and exit. It can be installed through the magnetic detection sensor installation hole (170).
The magnetic body detection sensor 320 is provided to be detachable from the magnetic body detection sensor installation hole 170 in a one-touch method,
Inside the magnetic body detection sensor installation hole 170, sensor coupling terminals 180 are provided at the upper and lower parts where the magnetic body detection sensor 320 is detached,
The sensor coupling terminal 180 is provided in the form of a connection terminal 181 to which the control system and the power means are connected, and an elastic body forming a curved surface at the connection terminal 181, so that the upper and lower sides of the magnetic body detection sensor 320 are elastic. It includes an elastic contact terminal 182 that is inserted and electrically connected,
The magnetic body detection sensor 320 is formed in a groove shape corresponding to the elastic contact terminal 182, and has a detachable contact groove 321 that is inserted into and coupled to the elastic contact terminal 182. (321) is an MRI shield door with a magnetic metal detection function, characterized in that it is formed in the form of a terminal electrically connected to the elastic contact terminal 182 and is coupled and electrically connected to the elastic contact terminal 182.
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