Blood oxygen monitoring probe and magnetic resonance imaging system

Abstract

The utility model provides a blood oxygen monitoring probe and a magnetic resonance imaging system. The blood oxygen monitoring probe comprises a blood oxygen monitoring line body; the outer shielding layer at least covers the periphery of the inner section of the blood oxygen monitoring line body; and the connecting end of the grounding wire is connected with the outer shielding layer. According to the utility model, the blood oxygen monitoring line body can extend into the shielding case so as to be respectively connected with a patient in the shielding case and a blood oxygen monitor outside the shielding case; conductive connection between the outer shielding layer and the shielding cover is achieved through the grounding wire, so that the outer shielding layer conducts two-way shielding on the blood oxygen monitoring line body, blood oxygen signals transmitted on the blood oxygen monitoring line body can be prevented from entering the shielding cover, and interference of the blood oxygen signals on magnetic resonance scanning imaging in the shielding cover is prevented; in addition, interference of radio frequency field and gradient field electromagnetism of the magnetic resonance imaging system on blood oxygen signals transmitted on the blood oxygen monitoring line body can be shielded, and compatible use of the magnetic resonance imaging system and a blood oxygen monitor can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blood oxygen monitoring, in particular to a blood oxygen monitoring probe and a magnetic resonance imaging system. Background Art

[0002] Due to the particularity of medical magnetic resonance systems, such as strong magnetic fields, strong radio frequency field interference, etc., which can affect ordinary monitors. At the same time, the blood oxygen probe of ordinary blood oxygen monitors will also affect the imaging of the magnetic resonance imaging system, resulting in image artifacts, low signal-to-noise ratio, bright line interference, etc. Therefore, ordinary blood oxygen monitors are not compatible with magnetic resonance imaging systems, making it difficult for many patients to monitor their blood oxygen while undergoing an MRI scan. As a result, patients need to undergo independent MRI scanning and blood oxygen monitoring, which cannot meet the needs of some patients, especially critically ill patients, for uninterrupted blood oxygen monitoring. Summary of the invention

[0003] In view of this, the utility model proposes a blood oxygen monitoring probe and a magnetic resonance imaging system, aiming to solve the problem that the existing blood oxygen monitor is not compatible with the magnetic resonance imaging system.

[0004] On the one hand, the utility model proposes a blood oxygen monitoring probe, which includes: a blood oxygen monitoring line body, which is used to extend into a shielding cover to respectively connect a patient placed in the shielding cover and a blood oxygen monitor placed outside the shielding cover to transmit the collected blood oxygen signal of the patient to the blood oxygen monitor; an outer shielding layer, which at least covers the outer periphery of the inner section of the blood oxygen monitoring line body, and is used to bidirectionally shield the blood oxygen monitoring line body; wherein the inner section of the blood oxygen monitoring line body is the portion of the blood oxygen monitoring line body located inside the shielding cover; a grounding wire, whose connecting end is connected to the outer shielding layer, and the grounding end is used to be connected to the shielding cover to realize a conductive connection between the outer shielding layer and the shielding cover, thereby realizing bidirectional shielding of the outer shielding layer.

[0005] Furthermore, in the above-mentioned blood oxygen monitoring probe, the collection end of the blood oxygen monitoring line body is provided with a finger clip sensor for clamping on the patient's hand and / or foot to collect blood oxygen signals.

[0006] Furthermore, in the above-mentioned blood oxygen monitoring probe, the external cover of the finger clip sensor is provided with a shielding sleeve, which is connected to the outer shielding layer. The shielding sleeve is used to wrap around the patient's hands and / or feet and the outside of the finger clip sensor to shield the signal when the patient undergoes magnetic resonance imaging and blood oxygen signal collection.

[0007] Furthermore, in the above-mentioned blood oxygen monitoring probe, the monitoring end of the blood oxygen monitoring line body is provided with a monitor connector for connecting to a blood oxygen monitor.

[0008] Furthermore, in the above-mentioned blood oxygen monitoring probe, an adapter is provided on the monitor-end connector, and the adapter is detachably connected to the monitor-end connector.

[0009] Furthermore, in the above-mentioned blood oxygen monitoring probe, the outside of the outer shielding layer is coated with an outer protective layer for protecting the blood oxygen monitoring line body and the outer shielding layer.

[0010] Furthermore, in the above-mentioned blood oxygen monitoring probe, the outer shielding layer is made of non-magnetic flexible conductive material, and the outer protective layer is an insulating layer.

[0011] Furthermore, in the above-mentioned blood oxygen monitoring probe, the grounding end of the grounding wire is provided with a grounding terminal for being plugged into the outer wall of the shielding cover.

[0012] On the other hand, the utility model also provides a magnetic resonance imaging system, which is provided with the above-mentioned blood oxygen monitoring probe.

[0013] Furthermore, the above-mentioned magnetic resonance imaging system also includes: a shielding cover; wherein the shielding cover is provided with a threading hole, and the blood oxygen monitoring probe is detachably inserted through the threading hole to extend into the interior of the shielding cover; a grounding socket is provided on the outer wall of the shielding cover, and the grounding end of the grounding wire of the blood oxygen monitoring probe is detachably connected to the grounding socket.

[0014] The blood oxygen monitoring probe and magnetic resonance imaging system provided by the utility model can extend into the shielding cover through the blood oxygen monitoring line body to respectively connect the patient placed in the shielding cover and the blood oxygen monitor placed outside the shielding cover, so as to transmit the collected blood oxygen signal of the patient to the blood oxygen monitor to realize blood oxygen monitoring; the conductive connection between the outer shielding layer and the shielding cover is realized by the grounding wire, so that the outer shielding layer performs bidirectional shielding on the blood oxygen monitoring line body, and can shield the blood oxygen signal transmitted on the blood oxygen monitoring line body from entering the shielding cover, so as to prevent the blood oxygen signal from interfering with the magnetic resonance scanning imaging in the shielding cover, solve the problem that the blood oxygen probe of the ordinary monitor will affect the magnetic resonance imaging system, resulting in image artifacts, low signal-to-noise ratio, bright line interference and the like, and can also shield the radio frequency field and gradient field electromagnetic interference of the magnetic resonance imaging system to the blood oxygen signal transmitted on the blood oxygen monitoring line body, realize the compatible use between the magnetic resonance imaging system and the blood oxygen monitor, solve the problem that the existing blood oxygen monitor is not compatible with the magnetic resonance imaging system, and realize the uninterrupted or short-time intermittent blood oxygen monitoring of the patient while realizing magnetic resonance imaging. At the same time, the blood oxygen monitoring probe and magnetic resonance imaging system are low in cost, which greatly saves equipment costs, can realize the popularization and promotion of blood oxygen monitoring probes and magnetic resonance imaging systems, and improve the efficiency of patient treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the structure of a magnetic resonance imaging system provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the structure of the blood oxygen monitoring probe in use provided by an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the structure of the connection between the blood oxygen monitoring probe and the shielding cover provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] See also Figures 1 to 3 , which shows the preferred structure of the magnetic resonance imaging system provided by the embodiment of the utility model. As shown in the figure, the magnetic resonance imaging system 100 includes: a blood oxygen monitoring probe 1, a shielding cover 2 and a magnetic resonance body 3; wherein,

[0021] The magnetic resonance body 3 is used to perform magnetic resonance scanning imaging on the head and neck of the patient 4; the shielding cover 2 is arranged on the opening side of the magnetic resonance body 3 (such as Figure 1 The right side shown in the figure) is used to cover the outside of the patient 4 to form a shielding cavity, and cooperate with the magnetic resonance body 3 to provide a magnetic resonance scanning space to avoid signal interference. In this embodiment, in order to realize blood oxygen monitoring of the patient while magnetic resonance scanning and imaging are performed, the blood oxygen monitoring probe 1 can be detachably installed in the shielding cover 2 to extend into the inside of the shielding cover 2 to collect the blood oxygen signal of the patient 4 placed in the shielding cover 2, and can be connected to the blood oxygen monitor 5 outside the shielding cover 2 to transmit the collected blood oxygen signal to the blood oxygen monitor 5, so as to realize uninterrupted or short-term intermittent blood oxygen monitoring while magnetic resonance scanning and imaging. In this embodiment, the opening side of the magnetic resonance body 3 (such as Figure 1The right side of the scanning bed assembly 6 can be provided to support the patient so that the head of the patient 4 can be inserted into the magnetic resonance body 3 for scanning; the shielding cover 2 is arranged on the scanning bed assembly 6 and can be connected to the magnetic resonance body 3 to form a shielding space on the scanning bed assembly 6 to provide a good shielding environment for the magnetic resonance, so as to ensure that the magnetic resonance obtains excellent imaging and provide a reliable basis for treatment.

[0022] In this embodiment, the shielding cover 2 is provided with a threading hole 21, so that the blood oxygen monitoring probe 1 can extend from the threading hole 21 into the interior of the shielding cover 2. The blood oxygen monitoring probe 1 is detachably inserted into the threading hole 21, so that when a patient undergoing magnetic resonance imaging needs blood oxygen monitoring, the blood oxygen monitoring probe 1 is inserted into the threading hole 21, one end of which can be connected to the blood oxygen monitor 5, and the other end can be in contact with the patient 4, so as to perform blood oxygen monitoring on the patient 4, so that the patient 4 can be subjected to magnetic resonance imaging while undergoing blood oxygen monitoring. That is to say, the blood oxygen monitoring probe 1 can be compatible with the externally arranged blood oxygen monitor 5, and can also be connected to the blood oxygen monitor 5, so as to provide a good shielding environment for magnetic resonance, and can also perform blood oxygen monitoring on the patient 4 in the shielding space, and through the blood oxygen monitor 5 Display monitoring is performed, and the blood oxygen monitor 5 is located outside the shielding cover 2 and can be used near the magnetic resonance imaging system. It will not interfere with the magnetic resonance scanning and will not be attracted by the magnetic field. The magnetic resonance imaging system and the blood oxygen monitor 5 can both work normally, solving the problem of compatible use of the blood oxygen monitor and the magnetic resonance imaging system, achieving compatibility between the magnetic resonance imaging system and the blood oxygen monitor 5, effectively solving the problem of compatible use of ordinary monitoring equipment and the magnetic resonance imaging system, achieving uninterrupted or short-term intermittent blood oxygen monitoring while magnetic resonance scanning imaging, and greatly saving equipment costs and improving the efficiency of patient treatment.

[0023] In this embodiment, since the shielding cover 2 itself has a certain thickness, when the threading diameter of the blood oxygen monitoring probe 1 is small, the inner diameter of the threading hole 21 adapted to the threading diameter of the blood oxygen monitoring probe 1 is also small, and the threading hole 21 is used as a waveguide hole to shield or attenuate the interference signal entering the shielding cover 2 from the threading hole 21. The shielding cover 2 has a preset thickness so that the waveguide hole has a preset length, thereby ensuring that the waveguide hole shields and attenuates the interference signal in the hole.

[0024] In this embodiment, both the scanning bed assembly 6 and the magnetic resonance body 3 can be mobile structures, that is, the scanning bed assembly 6 is a mobile scanning bed assembly, and the magnetic resonance body 3 is a mobile magnetic resonance body, so that the magnetic resonance imaging system 100 can be moved to the location of the patient 4 for magnetic resonance scanning examination, avoiding the inconvenience of walking and moving of the patient, especially long-distance operation, thereby avoiding secondary injury to the patient 4, and at the same time, reducing the burden on hospital human resources, thereby improving the convenience and scope of use of the magnetic resonance imaging system.

[0025] Continue to see Figure 2 and Figure 3 The blood oxygen monitoring probe 1 includes: a blood oxygen monitoring line body 11, an outer shielding layer 12, an outer protective layer 13, a grounding wire 14 and a grounding terminal 15; wherein,

[0026] The blood oxygen monitoring line body 11 is used to extend into the shielding cover 2 to respectively connect the patient 4 placed in the shielding cover 2 and the blood oxygen monitor 5 placed outside the shielding cover 2 to transmit the collected blood oxygen signal of the patient 4 to the blood oxygen monitor 5. Specifically, the blood oxygen monitoring line body 11 can be a blood oxygen monitoring line compatible with the blood oxygen monitor 5, which can realize the transmission of blood oxygen signals. In this embodiment, the collection end (such as Figure 2 The lower end shown in FIG. 1 ) can be used to collect the patient's blood oxygen signal. The monitoring end of the blood oxygen monitoring line body 11 (such as Figure 2 The upper end shown in the figure is used to connect to the blood oxygen monitor 5 so as to transmit the blood oxygen signal to the blood oxygen monitor 5 through the blood oxygen monitoring line body 11 for display and monitoring.

[0027] The outer shielding layer 12 is at least coated on the outer periphery of the inner section of the blood oxygen monitoring line body 11, and is used for bidirectional shielding of the blood oxygen monitoring line body 11; wherein, the inner section of the blood oxygen monitoring line body 11 is the portion of the blood oxygen monitoring line body 11 located in the shielding cover 2. Specifically, at least the outer periphery of the inner section of the blood oxygen monitoring line body 11 is coated with the outer shielding layer 12, and is used for signal shielding of the inner section of the blood oxygen monitoring line body 11. The outer shielding layer 12 serves the purpose of shielding the blood oxygen signal in the inner section of the blood oxygen monitoring line body 11, and can perform bidirectional shielding to prevent the blood oxygen signal in the inner section of the blood oxygen monitoring line body 11 from entering the shielding cover 2 to interfere with the magnetic resonance imaging in the shielding cover 2, and can also prevent the external signal in the inner section of the blood oxygen monitoring line body 11 from entering the blood oxygen monitoring line body 11 and interfering with the blood oxygen signal in the inner section of the blood oxygen monitoring line body 11. The outer section of the blood oxygen monitoring line body 11 may also be coated with the outer shielding layer 12 and the outer protective layer 13, or may not be coated with the outer shielding layer 12 and the outer protective layer 13. In this embodiment, there is no limitation on whether the outer section of the blood oxygen monitoring line body 11 is coated with the outer shielding layer 12 and the outer protective layer 13. The inner section of the blood oxygen monitoring line body 11 is the part of the blood oxygen monitoring line body 11 located inside the shielding cover 2, and the outer section of the blood oxygen monitoring line body 11 is the part of the blood oxygen monitoring line body 11 located outside the shielding cover 2.

[0028] In this embodiment, the outer protective layer 13 can be coated on the outer periphery of the outer shielding layer 12 to insulate and protect the blood oxygen monitoring line body 11 and the outer shielding layer 12. Specifically, the outer protective layer 13 protects the outer shielding layer 12 and the blood oxygen monitoring line body 11, preventing operators and patients from easily touching the outer shielding layer 12, and preventing damage to the outer shielding layer 12 and the blood oxygen monitoring line body 11. In other words, the outer periphery of the inner section of the blood oxygen monitoring line body 11 is sequentially coated with the outer shielding layer 12 and the outer protective layer 13.

[0029] The connection end of the ground wire 14 (such as Figure 2 The left end shown in FIG. 1 is connected to the outer shielding layer 12, and the grounding end (such as Figure 2The right end of the outer shielding layer 12 is used to be connected to the shielding cover 2 to achieve a conductive connection between the outer shielding layer 12 and the shielding cover 2, thereby achieving bidirectional shielding of the outer shielding layer 12. Specifically, the outer shielding layer 12 forms a good conductive connection with the shielding cover 2 through the grounding wire 14, so that the outer shielding layer 12 can achieve electromagnetic shielding of the blood oxygen monitoring line body 11, that is, the outer shielding layer 12 and the shielding cover 2 form an integrated electromagnetic shielding to achieve bidirectional shielding, so that external electromagnetic interference cannot enter the shielding cover 2 of the magnetic resonance imaging system 100, and the radio frequency field and gradient field electromagnetic interference of the magnetic resonance imaging system 100 also cannot affect the blood oxygen signal in the blood oxygen monitoring line body 11, so that the blood oxygen monitoring probe 1 can be compatible with the blood oxygen monitor 5 set outside the shielding cover 2, solving the problem that the existing blood oxygen monitor is not compatible with the use of the magnetic resonance imaging system, and can perform magnetic resonance scanning imaging while monitoring the patient's blood oxygen, realizing uninterrupted or short-term intermittent blood oxygen monitoring of the patient while performing magnetic resonance scanning imaging.

[0030] In order to facilitate the connection and removal between the grounding wire 14 and the shielding cover 2, preferably, the grounding end of the grounding wire 14 is provided with a grounding terminal 15, which is used to be plugged into the outer wall of the shielding cover 2, so as to facilitate the connection between the grounding wire 14 and the shielding cover 2, and also ensure a good conductive connection between the two. When the grounding terminal 15 is inserted into the shielding cover 2, the outer protective layer 13 and the shielding cover 2 can achieve good conductivity, that is, a grounding connection, thereby shielding the blood oxygen monitoring line body 11 for magnetic resonance scanning imaging. Of course, after the magnetic resonance scanning imaging is completed, the grounding terminal 15 can also be removed from the shielding cover 2, so that the blood oxygen monitoring probe 1 can be removed from the threading hole 21 of the shielding cover 2, especially it can be stretched out into the shielding cover 2 to achieve the separation between the blood oxygen monitoring probe 1 and the magnetic resonance imaging system 100, and a shielding cover can also be installed at the threading hole 21 to achieve shielding and blocking of the threading hole. In this embodiment, a grounding socket 22 may be further provided on the outer wall of the shielding cover 2 so that the grounding terminal 15 can be detachably mounted on the grounding socket 22 .

[0031] Continue to see Figure 2 and Figure 3 To facilitate the collection of blood oxygen signals, preferably, the collection end of the blood oxygen monitoring line body 11 (such as Figure 2The lower end of the blood oxygen monitoring line 11 is provided with a finger clip sensor 16 for clamping on the hand and / or foot of the patient 4 to collect blood oxygen signals. Specifically, the finger clip sensor 16 is arranged on the collection end of the blood oxygen monitoring line body 11, and the two are connected in a detachable manner or fixedly connected, which is not limited in this embodiment. The finger clip sensor 16 can be clamped on the hand and / or foot of the patient 4 to collect blood oxygen signals, and transmit them to the blood oxygen monitor 5 through the blood oxygen monitoring line body 11, so as to realize blood oxygen monitoring through the blood oxygen monitor 5. Among them, the blood oxygen signal can be a pulse signal.

[0032] In this embodiment, a shielding cover 17 may also be provided on the outside of the finger clip sensor 16, which is used to wrap around the patient's 4 hands and / or feet and the outside of the finger clip sensor 16 when the patient 4 undergoes magnetic resonance imaging and blood oxygen signal collection to perform signal shielding. This can prevent external interference signals from interfering with the blood oxygen signal, and can also prevent the blood oxygen signal from interfering with the magnetic resonance scanning imaging inside the shielding cover 2. Specifically, the shielding sleeve 17 can be connected to the outer shielding layer 12 so that the shielding sleeve 17 and the outer shielding layer 12 form a good conductive connection, thereby making the shielding sleeve 17, the outer shielding layer 12, the grounding wire 14 and the shielding cover 2 form a good conductive connection, that is, a grounding connection, thereby realizing two-way shielding, which can shield external interference signals to prevent external interference signals from interfering with the blood oxygen signal transmitted on the blood oxygen monitoring line body 11 and collected by the finger clip sensor 16, and can also shield the blood oxygen signal from entering the shielding cover 2 to prevent the blood oxygen signal from interfering with the magnetic resonance scanning imaging in the shielding cover 2, so that external electromagnetic interference cannot enter the shielding cover 2; the radio frequency field and gradient field electromagnetic interference of the magnetic resonance imaging system also do not affect the blood oxygen signal transmitted in the blood oxygen monitoring line body 11 and collected by the finger clip sensor 16, further ensuring the shielding effect of the magnetic resonance scanning imaging environment and the accuracy of collecting blood oxygen signals.

[0033] Continue to see Figure 2 and Figure 3 In order to facilitate the connection between the monitoring end of the blood oxygen monitoring line body 11 and the blood oxygen monitor 5, preferably, the monitoring end of the blood oxygen monitoring line body 11 may be provided with a monitor connector 18 for connecting to the blood oxygen monitor 5. Specifically, the monitor connector 18 may be plugged into the blood oxygen monitor 5 to improve the convenience of connection between the blood oxygen monitoring line body 11 and the blood oxygen monitor 5, thereby improving the convenience of using the blood oxygen monitoring probe 1 and the magnetic resonance imaging system 100. In order to avoid the monitor connector 18 and the blood oxygen monitor 5 interface not being compatible, preferably, the monitor connector 18 may also be provided with an adapter 19, and the adapter 19 is detachably connected to the monitor connector 18 to adapt to blood oxygen monitors 5 with different interfaces, so as to achieve compatible use of blood oxygen monitors 5 with multiple interfaces.

[0034] Continue to see Figure 3The blood oxygen monitoring line body 11 includes: a main cable 111, an inner shielding layer 112 and an inner insulating layer 113; wherein the main cable 111 is used to realize signal transmission between the finger clip sensor 16 and the blood oxygen monitor 5; the inner shielding layer 112 is coated on the outer periphery of the main cable 111, and is used to shield the blood oxygen signal transmitted in the main cable 111; the inner insulating layer 113 is coated on the outer periphery of the inner shielding layer 112, and is used to insulate and isolate the inner shielding layer 112.

[0035] During specific implementation, the outer circumference of the main cable 111 is sequentially coated with an inner shielding layer 112 and an inner insulating layer 113. That is to say, the inner section of the blood oxygen monitoring line body 11, from the inside to the outside, is sequentially: the main cable 111, the inner shielding layer 112, the inner insulating layer 113, the outer shielding layer 12 and the outer protective layer 13. The outer section of the blood oxygen monitoring line body 11, from the inside to the outside, is sequentially: the main cable 111, the inner shielding layer 112, the inner insulating layer 113. Of course, the outer section of the blood oxygen monitoring line body 11, from the inside to the outside, can also be sequentially: the main cable 111, the inner shielding layer 112, the inner insulating layer 113, the outer shielding layer 12 and the outer protective layer 13. The main cable 111 serves as a signal transmission body and is placed at the collection end outside the shielding cover 2 (such as Figure 3 The left end of the main cable 111 as shown in the figure can be connected to the finger clip sensor 16 to receive and transmit the blood oxygen signal collected by the finger clip sensor 16. The monitoring end of the main cable 111 placed outside the shielding cover 2 can be connected to the monitor connector 18 to transmit the blood oxygen signal to the blood oxygen monitor 5 through the monitor connector 18 and the adapter 19. The inner shielding layer 112 is used to shield the signal in the main cable 111 to prevent the blood oxygen signal, such as the pulse signal, from being interfered with. The inner shielding layer 112 can be connected to one of the pin cores of the monitor connector 18 to be compatible with the blood oxygen monitor 5. The inner insulating layer 113 can be coated on the outside of the inner shielding layer 112, and can be used to protect the main cable 111 and the inner shielding layer 112, prevent the operator and the patient from easily touching the inner shielding layer 112, and prevent the main cable 111 and the inner shielding layer 112 from being damaged. Of course, the inner insulating layer 113 can also insulate the inner shielding layer 112 from the outer shielding layer 12 to avoid mutual interference between the inner shielding layer 112 and the outer shielding layer 12 .

[0036] In this embodiment, a plurality of mutually independent and mutually insulated single-core cables 1111 are provided in the main cable 111. The pins of the monitor connector 18 are respectively connected to the independent single-core cables 1111 to transmit the blood oxygen signal respectively.

[0037] In this embodiment, the inner shielding layer 112 is one of a stainless steel layer, a copper shielding mesh layer, and an aluminum foil layer, or a combination of at least two of them. That is to say, the inner shielding layer 112 is a stainless steel layer, a copper shielding mesh layer, or an aluminum foil layer, or it can be a stainless steel layer, a copper shielding mesh layer, or an aluminum foil layer shared or combined to achieve a better shielding effect.

[0038] The conductive connection referred to in this application is a connection for achieving a shielding effect, for example, it can be a contact connection so that grounding can be achieved during magnetic resonance imaging to achieve shielding, or it can be other connection methods, and it does not mean that it must be powered when used.

[0039] The use principle of the blood oxygen monitoring probe and magnetic resonance imaging system is as follows: when the blood oxygen monitoring of the patient is required during the magnetic resonance imaging scan, the magnetic resonance imaging system 100 can be moved as a whole to the position of the patient 4, so that the patient 4 can be carried or moved to the magnetic resonance imaging system 100 by himself, and the blood oxygen monitor 5 is placed on one side of the magnetic resonance imaging system 100; the blood oxygen monitoring probe 1 can be passed through the threading hole 21 of the shielding cover 2, the finger clip sensor 16 is clamped on the hand and / or foot of the patient 4, and connected to the blood oxygen monitor 5 through the monitor connector 18 or the adapter 19; when scanning, the grounding terminal 15 is plugged into the grounding socket on the outer wall of the shielding cover 2 to achieve the grounding connection between the outer shielding layer 12 and the shielding cabin 2. After the scan is completed, the grounding terminal 15 and the monitor connector 18 or the adapter 19 can be unplugged, and passed through the threading hole 21 of the shielding cover 2, so as to remove the blood oxygen monitoring probe from the magnetic resonance imaging system 100.

[0040] Since the shielding effect of the waveguide hole is related to its aspect ratio, the larger the aspect ratio, the better the shielding effect. The diameter of the threading hole 21 is adapted to the threading diameter of the blood oxygen monitoring probe 1, that is, the outer diameter of the blood oxygen monitoring line body 11. If the ratio between the thickness of the shielding cover 2 and the outer diameter of the blood oxygen monitoring line body 11 is greater than the preset aspect ratio, the shielding of the waveguide hole formed by the threading hole 21 can meet the shielding requirements of the magnetic resonance imaging system; if the ratio between the thickness of the shielding cover 2 and the outer diameter of the blood oxygen monitoring line body 11 is less than or equal to the preset aspect ratio, the shielding of the waveguide hole formed by the threading hole 21 may not meet the shielding requirements of the magnetic resonance imaging system.

[0041] In order to improve the clarity of the magnetic resonance scanning imaging of the magnetic resonance imaging system, preferably, in particular, when the ratio between the thickness of the shielding cover 2 and the outer diameter of the blood oxygen monitoring line body 11 is less than or equal to the preset aspect ratio, the threading hole 21 may be provided with a shielding tube (not shown in the figure) for shielding the threading hole 21, so as to further prevent the external electromagnetic interference signal from entering the shielding cover 2 from the threading hole 21; wherein, the shielding tube and the shielding cover 2 may be connected by wire. The blood oxygen monitoring probe 1 is detachably inserted into the shielding tube, and the signal can be shielded by the blood oxygen monitoring probe 1, and the signal at the threading hole 21 can be shielded by the shielding tube, so as to further prevent the external interference signal from entering the shielding cover 2 from the threading hole 21 to interfere with the magnetic resonance scanning imaging.

[0042] In order to improve the signal shielding performance of the magnetic resonance imaging system 100 when only performing magnetic resonance scanning, preferably, in particular, when the ratio between the thickness of the shielding cover 2 and the outer diameter of the blood oxygen monitoring line body 11 is less than or equal to the preset aspect ratio, a detachable shielding cover (not shown in the figure) is further provided at the threading hole 21, which is used to be installed at the threading hole 21 when the blood oxygen monitoring probe 1 is disassembled to block and shield the threading hole 21. Specifically, the shielding tube and the shielding cover are selectively arranged at the threading hole 21 in a detachable manner. When the patient 4 needs blood oxygen monitoring, the shielding tube can be installed at the threading hole 21, the blood oxygen monitor 5 is placed outside the shielding cover 2, and the blood oxygen monitoring probe 1 is inserted into the shielding tube; when the patient 4 does not need blood oxygen monitoring, the shielding cover is installed at the threading hole 21, and the shielding cover is conductively connected to the shielding cover 2 to achieve integrated shielding of interference signals, and can shield interference signals entering the shielding cover 2 from the threading hole 21.

[0043] In summary, the blood oxygen monitoring probe and magnetic resonance imaging system provided in this embodiment can extend into the shielding cover 2 through the blood oxygen monitoring line body 11 to respectively connect the patient 4 placed in the shielding cover 2 and the blood oxygen monitor 5 placed outside the shielding cover 2, so as to transmit the collected blood oxygen signal of the patient 4 to the blood oxygen monitor 5 to realize blood oxygen monitoring; the conductive connection between the outer shielding layer 12 and the shielding cover 2 is realized through the grounding wire 14, so that the outer shielding layer 12 can bidirectionally shield the blood oxygen monitoring line body 11, and can shield the blood oxygen signal transmitted on the blood oxygen monitoring line body 11 from entering the shielding cover 2, so as to prevent the blood oxygen signal from entering the shielding cover 2. The interference of the blood oxygen sensor of the ordinary monitor on the magnetic resonance imaging system is solved, and the problem of the blood oxygen sensor of the ordinary monitor affecting the magnetic resonance imaging system, resulting in image artifacts, low signal-to-noise ratio, bright line interference and other phenomena can be solved. The radio frequency field and gradient field electromagnetic interference of the magnetic resonance imaging system on the blood oxygen signal transmitted on the blood oxygen monitoring line body 11 can be shielded, and the compatibility between the magnetic resonance imaging system and the blood oxygen monitor can be realized, and the problem that the existing blood oxygen monitor is not compatible with the magnetic resonance imaging system can be solved. The blood oxygen monitoring of the patient 4 can be carried out uninterruptedly or intermittently for a short time while the magnetic resonance imaging is realized. At the same time, the blood oxygen monitoring probe and the magnetic resonance imaging system are low in cost, which greatly saves the equipment cost, and can realize the popularization and promotion of the blood oxygen monitoring probe and the magnetic resonance imaging system, and improve the efficiency of patient treatment.

[0044] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A blood oxygen monitoring probe, characterized in that: include: The blood oxygen monitoring line body is used to extend into the shielding cover to respectively connect the patient placed in the shielding cover and the blood oxygen monitor placed outside the shielding cover to collect the patient's blood oxygen signal and transmit it to the blood oxygen monitor; The outer shielding layer at least covers the outer periphery of the inner section of the blood oxygen monitoring line body, and is used for bidirectional shielding of the blood oxygen monitoring line body; wherein the inner section of the blood oxygen monitoring line body is the part of the blood oxygen monitoring line body located in the shielding cover; A grounding wire, a connection end of which is connected to the outer shielding layer, and a grounding end is used to be connected to the shielding cover to achieve a conductive connection between the outer shielding layer and the shielding cover, thereby achieving bidirectional shielding of the outer shielding layer.

2. The blood oxygen monitoring probe according to claim 1, characterized in that: The collection end of the blood oxygen monitoring line body is provided with a finger clip sensor for clamping on the patient's hand and / or foot to collect blood oxygen signals.

3. The blood oxygen monitoring probe according to claim 2, characterized in that: The outer cover of the finger clip sensor is provided with a shielding sleeve, which is connected to the outer shielding layer. The shielding sleeve is used to wrap around the patient's hands and / or feet and the outside of the finger clip sensor to shield the signal when the patient undergoes magnetic resonance imaging and blood oxygen signal collection.

4. The blood oxygen monitoring probe according to any one of claims 1 to 3, characterized in that: The monitoring end of the blood oxygen monitoring line body is provided with a monitor connector for connecting to a blood oxygen monitor.

5. The blood oxygen monitoring probe according to claim 4, characterized in that: The monitor-end connector is provided with an adapter, and the adapter is detachably connected to the monitor-end connector.

6. The blood oxygen monitoring probe according to any one of claims 1 to 3, characterized in that: The outer shielding layer is coated with an outer protective layer for protecting the blood oxygen monitoring line body and the outer shielding layer.

7. The blood oxygen monitoring probe according to claim 6, characterized in that: The outer shielding layer is made of non-magnetic flexible conductive material, and the outer protective layer is an insulating layer.

8. The blood oxygen monitoring probe according to any one of claims 1 to 3, characterized in that: The grounding end of the grounding wire is provided with a grounding terminal for plugging into the outer wall of the shielding cover.

9. A magnetic resonance imaging system, characterized in that: A blood oxygen monitoring probe as described in any one of claims 1 to 8 is provided.

10. The magnetic resonance imaging system according to claim 9, characterized in that: Also includes: Shielding cover; wherein, The shielding cover is provided with a threading hole, and the blood oxygen monitoring probe is detachably arranged at the threading hole to extend into the interior of the shielding cover; A grounding socket is provided on the outer wall of the shielding cover, and the grounding end of the grounding wire of the blood oxygen monitoring probe is detachably connected to the grounding socket.

Images