CN113597251A

CN113597251A - Medical system

Info

Publication number: CN113597251A
Application number: CN202111004888.2A
Authority: CN
Inventors: 张新东
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-11-02

Abstract

The present application relates to medical systems. The medical system includes: medical devices and shielding. The shielding layer is used for shielding electromagnetic field interference between the medical equipment and the external environment, the shielding layer is provided with a net structure, and the shielding layer is fixed on a shell of the medical equipment.

Description

Medical system

Technical Field

The present application relates generally to medical systems and, more particularly, to shielding layers for use in medical systems.

Background

When high-power components inside medical equipment, especially imaging equipment with X-ray exposure (such as X-ray imaging equipment and Computed Tomography (CT) equipment) work, the electromagnetic field intensity of the space environment is increased, and false triggering and false detection of sensitive signals are caused, so that the normal work of a medical system is interfered. It is therefore desirable to provide a shielding layer that can shield electromagnetic field interference between a medical device and the external environment.

Disclosure of Invention

One aspect of the present application provides a medical system. The system includes a medical device and a shielding layer. The shielding layer is used for shielding electromagnetic field interference between the medical equipment and the external environment, the shielding layer is provided with a net structure, and the shielding layer is fixed on a shell of the medical equipment.

In some embodiments, the shield is fixed inside or inside the housing.

In some embodiments, the medical device includes a housing, and the shield is connected to a metal portion of the housing by a screw or a ground terminal.

In some embodiments, the mesh structure comprises multiple layers, at least two layers of the mesh structure being of different materials.

In some embodiments, the mesh structure comprises multiple layers, at least two layers of the mesh structure being of the same material.

In some embodiments, the mesh structure comprises multiple layers, and two adjacent layers of the mesh structure are directly stacked by a fastener, a sandwich pressing method or an adhesive-backed sticking method.

In some embodiments, the mesh structure comprises a plurality of layers, and adjacent two layers of the mesh structure are indirectly stacked through a transition layer.

In some embodiments, at least one of a material of the mesh structure, a thickness of the mesh structure, a number of layers of the mesh structure, a size or a shape of the mesh structure is non-uniformly distributed along the housing.

In some embodiments, the surface of the shell is provided with a concave or convex, and the reticular structure is tightly attached to the surface of the shell.

Another aspect of the present application provides a medical system. The system includes a medical device, a housing, and a shielding layer. The medical equipment comprises a stand, a ray generating device and a ray receiving device. The frame has an accommodating cavity extending along the longitudinal direction. The ray generating device and/or the ray receiving device are arranged in the stand or the accommodating cavity. The housing includes one or more pieces of an insulating shell. The housing is fixed on the frame. The housing masks the radiation generating device and/or the radiation receiving device. The shielding layer is of a net structure or a sheet structure. The shielding layer is made of a metal or non-metal conductive material. The shielding layer is disposed at one or more of an outer surface, an inner surface, or an interior of the housing. The shielding layer is configured to electrically connect with the chassis or a metal portion on the chassis.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features of the present application may be realized and attained by practice or use of the methods, instrumentalities and combinations of aspects of the specific embodiments described below.

Drawings

The present application will be further described by way of exemplary embodiments. These exemplary embodiments will be described in detail by means of the accompanying drawings. These embodiments are non-limiting exemplary embodiments in which like reference numerals represent similar structures throughout the several views of the drawings, and wherein:

FIG. 1 is a schematic illustration of an exemplary medical system shown in accordance with some embodiments of the present application;

FIG. 2 is a schematic illustration of an exemplary shielding layer shown according to some embodiments of the present application;

FIG. 3 is a schematic illustration of an exemplary shielding layer shown in accordance with some embodiments of the present application;

FIG. 4 is a schematic illustration of an exemplary shielding layer shown in accordance with some embodiments of the present application; and

fig. 5 is a side view of an exemplary shielding layer shown in accordance with some embodiments of the present application.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. However, it will be apparent to one skilled in the art that the present application may be practiced without these specific details. In other instances, well known methods, procedures, systems, components, and/or circuits have been described at a high-level in order to avoid unnecessarily obscuring aspects of the present application. It will be apparent to those skilled in the art that various modifications to the disclosed embodiments are possible, and that the general principles defined in this application may be applied to other embodiments and applications without departing from the spirit and scope of the application. Thus, the present application is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

The terminology used in the description presented herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that the terms "system", "engine", "unit", "module" and/or "block" as used herein are methods for distinguishing different components, elements, parts, portions or assemblies of different levels in ascending order. However, these terms may be replaced by other expressions if the same purpose can be achieved.

It will be understood that when an element, engine, module or block is referred to as being "on," "connected to" or "coupled to" another element, engine, module or block, it can be directly on, connected or coupled to or in communication with the other element, engine, module or block, or intervening elements, engines, modules or blocks may be present, unless the context clearly dictates otherwise. In this application, the term "and/or" may include any one or more of the associated listed items or combinations thereof.

These and other features, aspects, and advantages of the present application, as well as the methods of operation and functions of the related elements of structure and the combination of parts and economies of manufacture, will become more apparent upon consideration of the following description of the accompanying drawings, all of which form a part of this specification. It is to be understood, however, that the drawings are designed solely for the purposes of illustration and description and are not intended as a definition of the limits of the application. It should be understood that the drawings are not to scale.

At present, the shell of the medical equipment is usually made of non-metallic materials such as plastics, glass fiber reinforced plastics and the like, and has no shielding effect on electromagnetic fields. When high-power components (e.g., motors, high-voltage generators) inside the medical device operate, the electromagnetic field intensity of the space environment is increased, and the device (e.g., computer, processor, circuit testing device) and people (e.g., patient, doctor) in the external environment are affected, so that the normal operation of the system is interfered. One known shielding method is to provide a metal cover on a source (e.g., a motor, a high-voltage generator) that generates a high-frequency magnetic field. The second shielding method is to shield the signal transmitted by the cable by wrapping the cable. A third way of shielding is to plan the electromagnetic field inside the medical device as a whole, for example, to place the source components generating the electromagnetic field inside the medical device in a distributed manner, thereby reducing the electromagnetic field strength of the spatial environment. In addition, electromagnetic field interference between the interior of the medical equipment and the external environment can be reduced by embedding metal sheets in the plastic shell of the medical equipment. However, direct shielding of the source component is generally not sufficient to achieve the desired shielding effect, and is complicated and costly. In addition, when the electromagnetic field inside and outside the medical equipment is reduced by embedding the metal sheet into the plastic shell of the medical equipment, the shape of the metal sheet needs to be consistent with that of the shell, so that the manufacturing difficulty is high and the cost is high.

The present application provides a medical system. The medical system includes a medical device and a shielding layer. The shielding layer may be used to shield electromagnetic field interference between the medical device and the external environment. The shielding layer may have a mesh structure. The shielding layer may be secured to a housing of the medical device. The shielding layer is arranged on the shell of the medical equipment, so that the interference of an electromagnetic field generated by internal components of the medical equipment on equipment and people in the external environment can be effectively shielded, the false detection and error report of the medical system are reduced, and the stability and reliability of the medical system are improved. In addition, the shielding layer with the net-shaped structure can be tightly attached to the shell, so that the shielding layer is prevented from being separated from the shell due to vibration generated in the rotating process of the frame of the medical equipment, and the safety of the medical system is improved.

Fig. 1 is a schematic diagram of an exemplary medical system shown in accordance with some embodiments of the present application. The medical system 100 may include a medical device 110, a network 120, one or more terminals 130, a processing device 140, and a storage device 150. The components in the medical system 100 may be connected in various ways. By way of example only, the medical device 110 may be connected to the processing device 140 directly (as indicated by the dashed double-headed arrow connecting the medical device 110 and the processing device 140) or through the network 120. As yet another example, the storage device 150 may be connected to the medical device 110 directly (as indicated by the dashed double-headed arrow connecting the storage device 150 and the medical device 110) or through the network 120. As yet another example, terminal 130 may be connected to processing device 140 directly (as indicated by the dashed double-headed arrow connecting terminal 130 and processing device 140) or through network 120. As yet another example, the terminal 130 may be connected to the storage device 150 directly (as indicated by the dashed double-headed arrow connecting the terminal 130 and the storage device 150) or through the network 120.

The medical device 110 may be used to scan a subject. In some embodiments, the object may comprise a biological object and/or a non-biological object. For example, the object may include a particular portion of a human body, such as the head, chest, abdomen, etc., or a combination thereof. As another example, the object may be a patient to be examined (e.g., a patient to be scanned) by the medical device 110.

In some embodiments, the medical device 110 may include a single modality scanner and/or a multi-modality scanner. The single modality scanner may include, for example, an ultrasound scanner, an X-ray scanner, a Computed Tomography (CT) scanner, a Magnetic Resonance Imaging (MRI) scanner, an ultrasound tester, a Positron Emission Tomography (PET) scanner, an Optical Coherence Tomography (OCT) scanner, an Ultrasound (US) scanner, an intravascular ultrasound (IVUS) scanner, a near infrared spectroscopy (NIRS) scanner, a Far Infrared (FIR) scanner, or the like, or any combination thereof. The multi-modality scanner may include, for example, an X-ray imaging-magnetic resonance imaging (X-ray-MRI) scanner, a positron emission tomography-X-ray imaging (PET-X-ray) scanner, a single photon emission computed tomography-magnetic resonance imaging (SPECT-MRI) scanner, a positron emission tomography-computed tomography (PET-CT) scanner, a digital subtraction angiography-magnetic resonance imaging (DSA-MRI) scanner, or the like. The scanners provided above are for illustration purposes only and are not intended to limit the scope of the present application. As used herein, the term "imaging modality" or "modality" broadly refers to an imaging method or technique that collects, generates, processes, and/or analyzes imaging information of a target object.

In some embodiments, the medical device 110 may also include modules and/or components for performing scans and/or related analyses. In some embodiments, the medical device 110 may include a gantry, a housing, a radiation generating device, a radiation receiving device, a scanning couch, and the like, or any combination thereof. The radiation generating means may comprise an X-ray source, a gamma ray source, or a radio frequency emitting coil, etc. The radiation receiving device may comprise an X-ray detector, a gamma ray detector, a radio frequency receiving coil, or the like. The housing and gantry can be used to support and protect other components (e.g., radiation receiving devices, radiation generating devices) in the medical apparatus 110. The rack can be internally provided with an accommodating cavity extending along the longitudinal direction, and the accommodating cavity can be used for placing an inspection object. In some embodiments, the radiation generating device and the radiation receiving device may be disposed on the gantry or within the receiving cavity. The radiation generating device and the radiation receiving device may be arranged opposite to each other. The housing may include one or more insulating housings, which are secured to the frame and which house the radiation generating device and the radiation receiving device. The scanning bed may be used to position the subject for scanning. For example, the user may lie on their back, side, or front on a scanning bed. The radiation generating device may emit radiation (e.g., X-ray photons, gamma ray photons) towards the object. The radiation receiving means may detect a portion of the radiation emitted by the radiation generating means.

In some embodiments, the medical system 100 may include a shielding layer (not shown in fig. 1). In some embodiments, the shielding layer may be affixed to the housing of the medical device 110 (e.g., inside the housing, outside the housing). In some embodiments, the shielding layer may be affixed to the interior of the housing of the medical device 110. The shielding layer may have a mesh structure or a sheet structure. For example, the shielding layer may be a metal mesh. The shielding layer may be used to shield interference of electric and/or magnetic fields between the medical device 110 and the external environment. In particular, the shielding layer may function to absorb energy, reflect energy, and/or cancel energy from electromagnetic fields generated by internal components of the medical device 110 and/or electromagnetic fields generated by other devices in the external environment, thereby reducing electromagnetic field interference. For example, the shielding layer may prevent electromagnetic fields generated by components inside the medical device 110 from diffusing to the outside environment and affecting other devices and people. As another example, the shielding layer may prevent electromagnetic fields generated by other devices in the external environment from affecting components inside the medical device 110. Further description of the shielding layers may be found elsewhere in this application (e.g., fig. 2-5 and their associated description).

The network 120 may include any suitable network that may facilitate the exchange of information and/or data for the medical system 100. In some embodiments, one or more components of the medical system 100 (e.g., the medical device 110, the terminal 130, the processing device 140, the storage device 150) may communicate information and/or data with one or more other components of the medical system 100 via the network 120. For example, the processing device 140 may obtain image data from the medical device 110 via the network 120. As another example, processing device 140 may obtain user instructions from terminal 130 via network 120. The network 120 may be and/or include a public network (e.g., the internet), a private network (e.g., a Local Area Network (LAN), a Wide Area Network (WAN)), a wired network (e.g., a wireless local area network), an ethernet network, a wireless network (e.g., an 802.11 network, a Wi-Fi network), a cellular network (e.g., a Long Term Evolution (LTE) network), a frame relay network, a virtual private network ("VPN"), a satellite network, a telephone network, a router, a hub, a switch, a server computer, and/or any combination thereof. By way of example only, network 120 may include a cable network, a wireline network, a fiber optic network, a telecommunications network, an intranet, a Wireless Local Area Network (WLAN), a Metropolitan Area Network (MAN), a Public Switched Telephone Network (PSTN), Bluetooth, or a network such as a Bluetooth network^TMNetwork and ZigBee^TMA network, a Near Field Communication (NFC) network, etc., or any combination thereof. In some embodiments, network 120 may include one or more network access points. For example, the network 120 may include wired and/or wireless network access points, such as base stations and/or internet exchange points, through which one or more components of the medical system 100 may connect to the network 120 to exchange data and/or information.

The terminal 130 may include a mobile device 131, a tablet computer 132, a laptop computer 133, etc., or any of the sameAnd what combinations are. In some embodiments, mobile device 131 may include a smart home device, a wearable device, a smart mobile device, a virtual reality device, an augmented reality device, and the like, or any combination thereof. For example only, terminal 130 may comprise a mobile device. In some embodiments, the smart home devices may include smart lighting devices, smart appliance control devices, smart monitoring devices, smart televisions, smart cameras, interphones, and the like, or any combination thereof. In some embodiments, the wearable device may include bracelets, footwear, glasses, helmets, watches, clothing, backpacks, smart accessories, and the like, or any combination thereof. In some embodiments, the mobile device may include a mobile phone, a Personal Digital Assistant (PDA), a gaming device, a navigation device, a point of sale (POS) device, a laptop computer, a tablet computer, a desktop computer, and the like, or any combination thereof. In some embodiments, the virtual reality device and/or the augmented reality device may include a virtual reality helmet, virtual reality glasses, virtual reality eyeshields, augmented reality helmets, augmented reality glasses, augmented reality eyeshields, and the like, or any combination thereof. For example, the virtual reality device and/or augmented reality device may include a Google Glass^TM、Oculus Rift^TM、Hololens^TM、Gear VR^TMAnd the like. In some embodiments, one or more terminals 130 may be part of processing device 140.

Processing device 140 may process data and/or information obtained from medical device 110, terminal 130, and/or storage device 150. In some embodiments, the processing device 140 may be a single server or a group of servers. The server groups may be centralized or distributed. In some embodiments, the processing device 140 may be a local component or a remote component with respect to one or more other components of the medical system 100. For example, the processing device 140 may access information and/or data stored in the medical device 110, the terminal 130, and/or the storage device 150 via the network 120. As another example, the processing device 140 may be directly connected to the medical device 110, the terminal 130, and/or the storage device 150 to access stored information and/or data. In some embodiments, the processing device 140 may be implemented on a cloud platform. By way of example only, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-tiered cloud, and the like, or any combination thereof. In some embodiments, the processing device 140 may be implemented by a computing device having one or more components.

Storage device 150 may store data, instructions, and/or any other information. In some embodiments, the storage device 150 may store data obtained from the terminal 130 and/or the processing device 140. In some embodiments, storage device 150 may store data and/or instructions that processing device 140 may perform or be used to perform the exemplary methods described herein. In some embodiments, the storage device 150 may include mass storage, removable storage, volatile read-write memory, read-only memory (ROM), and the like, or any combination thereof. Exemplary mass storage devices may include magnetic disks, optical disks, solid state drives, and the like. Exemplary removable memories may include flash drives, floppy disks, optical disks, memory cards, compact disks, magnetic tape, and the like. Exemplary volatile read and write memories can include Random Access Memory (RAM). Exemplary RAM may include Dynamic Random Access Memory (DRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), Static Random Access Memory (SRAM), thyristor random access memory (T-RAM), and zero capacitance random access memory (Z-RAM), among others. Exemplary ROMs may include mask ROM (mrom), programmable ROM (prom), erasable programmable ROM (eprom), electrically erasable programmable ROM (eeprom), compact disc ROM (CD-ROM), digital versatile disc ROM, and the like, and in some embodiments, the storage device 150 may be implemented on a cloud platform. By way of example only, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-tiered cloud, and the like, or any combination thereof.

In some embodiments, the storage device 150 may be connected to the network 120 to communicate with one or more other components of the medical system 100 (e.g., the processing device 140, the terminal 130). One or more components of the medical system 100 may access data or instructions stored in the storage device 150 via the network 120. In some embodiments, the storage device 150 may be directly connected to or in communication with one or more other components of the medical system 100 (e.g., processing device 140, terminal 130). In some embodiments, the storage device 150 may be part of the processing device 140.

It should be noted that the foregoing description is provided for illustrative purposes only, and is not intended to limit the scope of the present application. Many variations and modifications will occur to those skilled in the art in light of the teachings herein. The features, structures, methods, and other features of the example embodiments described herein may be combined in various ways to obtain additional and/or alternative example embodiments. However, such changes and modifications do not depart from the scope of the present application.

Fig. 2 and 3 are schematic diagrams of exemplary shielding layers shown according to some embodiments of the present application.

In some embodiments, the shielding layer may be affixed to one or more locations inside the housing, outside the housing, or inside the housing of the medical device (e.g., medical device 110). As used herein, the inside of the housing may refer to a side close to an object to be scanned (e.g., a patient), and the outside of the housing may refer to a side far from the object to be scanned. In some embodiments, the shielding layer and the housing may be tightly attached or have a certain gap. In some embodiments, the shield may be secured inside the housing by fasteners (e.g., wires, screws, bolts, pins, etc.). In some embodiments, the shielding layer may be fixed inside the housing by means of adhesive backing. For example, a back adhesive may be applied to the side of the shield layer that contacts the housing to secure the shield layer inside the housing. By fixing the shielding layer inside the housing, the appearance of the medical device is not affected and the shielding layer is also protected from being easily damaged.

The shielding layer may be made of a conductive material. In some embodiments, the shielding layer may have a mesh structure or a sheet structure. For example, as shown in fig. 2, the shielding layer 200 may be a shielding net having a plurality of meshes. Since the housing of the medical device generally has various curved arcs, the shielding layer of the mesh structure may have a certain flexibility, easily change a shape, and a more simple attaching operation to the housing, compared to the shielding layer of the non-mesh structure (e.g., a metal sheet), and the shielding layer of the mesh structure may be attached to the housing more closely, thereby preventing the shielding layer from forming a buckling wrinkle. In addition, the close fit between the shielding layer with the net structure and the shell can prevent the shielding layer from being separated from the inner side of the shell caused by vibration generated in the rotating process of the frame of the medical equipment, and the safety of a medical system is improved.

In some embodiments, the shielding layer may be continuous. For example, the shielding layer may include a plurality of metal meshes fixed at different positions inside the housing, and the plurality of metal meshes may be directly connected to each other (e.g., connected to each other by a metal wire). In some embodiments, the shield layer may be grounded. For example, the shielding layer may be directly connected to the ground by a ground screw, a ground wire, a ground terminal, or the like. For another example, the shielding layer may be connected to a metal portion of the chassis by a ground screw, a ground wire, a ground terminal, or the like, so that the shielding layer and the chassis are integrally grounded. Through grounding the continuous shielding layer, the overall shielding effect of the shielding layer can be improved, and the electromagnetic field intensity in the scanning environment where the medical equipment is located is reduced. In some embodiments, the shielding layer may be configured to electrically connect with the chassis or a metal portion on the chassis, enabling the shielding layer and the chassis to be integrally co-grounded.

In some embodiments, the position of the mesh structure may be determined from the position of an electromagnetic field source component of the medical device. For example, a shielding layer may be provided inside the respective housings of the component that generates the electromagnetic field or the component that generates the electromagnetic field that is strong (e.g., the high-voltage component); no shielding layer is provided inside the respective housings of the components that do not generate an electromagnetic field or the components that generate a weaker electromagnetic field (e.g., low-voltage components).

In some embodiments, the material of the mesh structure, the thickness of the mesh structure, the size, shape and/or distribution density of the mesh structure may be determined according to the properties of the electromagnetic field (e.g., the strength of the electromagnetic field, the frequency of the electromagnetic field), the desired shielding effect, and/or the installation space of the shielding layer, etc. The mesh distribution density may refer to the number of meshes per unit area of the shielding layer. For example, the greater the distribution density of the meshes, the greater the number of meshes per unit area. Under the condition of a certain distribution density, the smaller the mesh size is, the stronger the shielding capability of the shielding layer to the electromagnetic field is.

In some embodiments, the material of the mesh structure may be a flexible material with good ductility that has an electromagnetic field shielding effect. For example, a metal material having good ductility, an alloy material, other metal-containing conductor materials, or a non-metal conductive material may be used as the material of the mesh structure. The flexible material can ensure the close fit between the mesh structure and the shell. In some embodiments, the material of the mesh structure may be determined based on the properties of the electromagnetic field. For example, if the electromagnetic field is a high frequency electromagnetic field, the mesh structure may be made of a material with low magnetic permeability, such as copper-iron alloy or copper-aluminum alloy. If the electromagnetic field is a low-frequency electromagnetic field, the net structure can be made of materials with high magnetic permeability such as iron-nickel alloy, permalloy or silicon steel.

In some embodiments, the thickness of the mesh structure may be determined according to the properties of the electromagnetic field, a desired shielding effect, or an installation space of the shielding layer, etc. For example, the greater the strength of the electromagnetic field, the greater the thickness of the mesh structure may be. For another example, the thickness of the mesh structure may be higher if better shielding is desired. For another example, the larger the installation space of the shielding mesh, the higher the thickness of the mesh structure may be. Although the shielding effect on the electromagnetic field is better as the thickness of the mesh structure is higher, if the thickness of the mesh structure exceeds a certain threshold, the ductility of the mesh structure is affected, so that the mesh structure is difficult to bend and deform to fit the shell, and the fit degree between the mesh structure and the shell is affected. Therefore, the thickness of the mesh structure may be comprehensively determined according to the strength of the electromagnetic field, the desired shielding effect, the material of the shielding layer, the size and/or shape of the mesh structure, the installation space of the shielding layer, and the degree of fit between the mesh structure and the housing. In some embodiments, the thickness of the mesh structure may be in the range of 0.1mm to 0.5 mm.

In some embodiments, the mesh of the mesh structure can have any size, shape (e.g., circular, polygonal, irregular shape), and distribution density. For example, the meshes of the shielding layer 200 shown in fig. 2 are circular, and the meshes of the shielding layer shown in fig. 3 are square. In some embodiments, the size, shape and/or distribution density of the mesh structure may be determined according to the properties of the electromagnetic field, a desired shielding effect, an installation space of the shielding layer, a material of the shielding layer, a thickness of the shielding layer, and the like. For example, if the intensity of the electromagnetic field is greater, the size of the mesh structure may be smaller and the distribution density may be lower. For another example, if the installation space of the shielding layer is larger, the size of the mesh structure may be smaller, and the distribution density of the mesh may be lower. For another example, if better shielding is desired, the mesh size of the mesh structure may be smaller and the distribution density of the mesh may be lower. Generally, after the desired shielding effect is achieved, the size of the meshes should be increased as much as possible and the distribution density of the meshes should be increased, so as to reduce the space occupancy rate inside the medical equipment and reduce the weight and cost of the shielding layer. In some embodiments, the mesh openings may have a diameter in the range of 0.2mm to 20 mm. In some embodiments, the diameter of the mesh may be in the order of microns.

In some embodiments, the shape, size, and/or distribution density of the mesh structure may be determined according to the properties of the component of the medical device at the respective location. For example, the mesh size of the mesh structure at the position of the member generating the electromagnetic field or the member generating the electromagnetic field stronger (e.g., high-voltage member) may be small, and the distribution density of the mesh may be low; the mesh size of the mesh structure at the position of the member that does not generate the electromagnetic field or the member that generates a weak electromagnetic field (e.g., the low-voltage member) may be larger and the distribution density of the mesh may be higher. For another example, the shape of the mesh structure at the corresponding location may be adjusted according to the shape of the component of the medical device.

In some embodiments, the shape and/or size of the mesh structure may be determined according to the shape of the shell at the corresponding location. That is, mesh-structured shielding layers having different mesh shapes and/or sizes may be manufactured according to different shapes of housings. For example, if there are depressions or protrusions (e.g., raised screw heads) on the inside surface of the housing, the size and/or shape of the mesh structure at the locations corresponding to the depressions or protrusions may be adjusted to ensure a snug fit of the mesh structure to the inside surface of the housing. Specifically, the size and shape of the mesh at the position of the corresponding depression or projection may be made to coincide with the size and shape of the depression or projection. As shown in fig. 3, the shielding layer 300 includes a plurality of square meshes 310 of the same size, one square mesh 320, and one circular mesh 330. The square meshes 320 and the circular meshes 330 correspond to two bulges on the inner side surface of the shell respectively. In some embodiments, a mesh structure having a corresponding two-dimensional and/or three-dimensional shape may be designed for a contoured structure (e.g., depressions, protrusions, etc.) of the inside surface of the housing. For example, three-dimensional structure data of the inner surface of the shell may be acquired (e.g., by means of an imaging scan), a corresponding phantom may be prepared according to the three-dimensional structure data, and then a mesh structure of a corresponding shape may be woven on the phantom by using a corresponding weaving method. Thus, the mesh structure may have a shape and/or structure that is adapted to the shape and/or structure of the inner side surface of the housing, thereby improving the fit of the mesh structure to the inner side surface of the housing.

In some embodiments, the mesh structure may be braided from shielding filaments. The material, cross-sectional area and/or degree of tightness of the weaving of the shielding wire may be determined according to the properties of the electromagnetic field, the desired shielding effect or the installation space of the shielding layer, etc. For example, if the intensity of the electromagnetic field is greater, the cross-sectional area of the shielding wire may be greater, and the shielding wire may be woven more densely, so that the mesh size of the mesh structure may be smaller. For another example, if a better shielding effect is desired, the larger the cross-sectional area of the shielding wires may be, the more densely the shielding wires may be woven, and thus the smaller the size of the mesh structure may be.

Fig. 4 is a schematic diagram of an exemplary shielding layer shown in accordance with some embodiments of the present application.

In some embodiments, at least one of the material, thickness, number of layers, size, shape, or density of the mesh structure is non-uniformly distributed along the inside of the medical device housing. In some embodiments, the mesh structure may include a first region and a second region, the first region and the second region differing in at least one of material, thickness, number of layers, size, shape, or distribution density of the mesh openings. For example, as shown in fig. 4, the shielding layer 400 includes a first region 410 and a second region 420. The first region 410 may correspond to a position of a component a generating a high frequency electromagnetic field inside the medical device and the second region 410 may correspond to a position of a component B generating a low frequency electromagnetic field inside the medical device. The area size and the area shape of the first area 410 and the second area 420 may be determined according to the size and the shape of the part a and the part B, respectively. The material, thickness, number of layers, size, shape and/or distribution density of the mesh openings of the first and

second regions

410 and 420, respectively, may be determined according to the frequency and intensity of the electromagnetic field generated by their corresponding components. For example, the first region 410 may be made of copper-iron alloy or copper-aluminum alloy material for shielding the high-frequency electromagnetic field generated by the component a at the corresponding position; the second region 420 may be made of an iron-nickel alloy or permalloy material for shielding low frequency electromagnetic fields generated by the component B at the corresponding position. If the intensity of the electromagnetic field generated by the component a is higher and the intensity of the electromagnetic field generated by the component B is lower, the thickness of the first region 410 is larger, the number of layers is larger, the mesh size is smaller, and the mesh distribution density is lower; the second region 420 has a smaller thickness, a smaller number of layers, a larger mesh size, and a higher mesh distribution density. The mesh shape of the first region 410 and the mesh shape of the second region 420 may be the same or different.

It should be noted that the foregoing description is provided for illustrative purposes only, and is not intended to limit the scope of the present application. Many variations and modifications will occur to those skilled in the art in light of the teachings herein. The features, structures, methods, and other features of the example embodiments described herein may be combined in various ways to obtain additional and/or alternative example embodiments. However, such changes and modifications do not depart from the scope of the present application. In some embodiments, the shielding layer 400 may further include a third region, a fourth region, and other regions. The third region, the fourth region, etc. may correspond to the location of other components within the medical device.

In some embodiments, the mesh structure may comprise multiple layers. In some embodiments, the number of layers of the mesh structure, the material of each layer, the thickness of each layer, the size, shape and/or distribution density of the mesh holes of each layer may be determined according to the properties of the electromagnetic field, the desired shielding effect, the installation space of the shielding layer, and the like. For example, if the intensity of the electromagnetic field is larger, the number of layers of the net structure can be larger, the thickness of each layer can be larger, the size of the mesh of each layer can be smaller, and the distribution density can be lower. For another example, if better shielding effect is desired, the number of layers of the mesh structure may be larger, the thickness of each layer may be larger, the size of the mesh holes of each layer may be smaller, and the distribution density may be lower. For another example, if the installation space of the shielding net is larger, the number of layers of the net structure may be larger, the thickness of each layer may be larger, the size of the mesh of each layer may be smaller, and the distribution density may be lower.

In some embodiments, the number of layers of the mesh structure may be determined according to the properties of the component of the medical device at the respective location. For example, the number of layers of the mesh structure may be larger at the position of the member generating the electromagnetic field or the member generating the electromagnetic field stronger (e.g., high-voltage member); the number of layers of the mesh structure at the position of the component that does not generate the electromagnetic field or the component that generates the electromagnetic field weaker (for example, the low-voltage component) may be smaller. In some embodiments, the material of each layer, the thickness of each layer, and the size, shape, and/or distribution density of the mesh openings of each layer may be the same or different. For example, as shown in fig. 5, the shielding layer 500 may include a first layer a, a second layer B, a third layer C, and a fourth layer D, wherein the first layer a is fixed inside the housing. The first, second, third and fourth layers a, B, C and D may be of the same or different materials, thicknesses, mesh sizes, shapes and/or distribution densities.

In some embodiments, the materials of at least two layers in the mesh structure may be different, so as to simultaneously shield interference of different types of electromagnetic fields, and achieve superposition of multiple shielding effects, thereby meeting multiple electromagnetic shielding requirements in one application scenario. For example, a layer of permalloy N mesh can be fixed inside the housing of the medical device for shielding the interference of low-frequency electromagnetic fields; and then, overlapping M layers of copper-iron alloy nets for shielding the interference of the high-frequency electromagnetic field, wherein M and N are more than or equal to 1, the values of M and N can be the same or different, the thickness of each layer of permalloy net can be the same or different, and the thickness of each layer of copper-iron alloy net can be the same or different. By using the shielding layers with the multi-layer mesh structure of different materials, different types of electromagnetic fields (such as a high-frequency electromagnetic field and a low-frequency electromagnetic field) can be shielded at the same time, and the stability of signal transmission and acquisition in the external environment of the medical equipment is ensured.

In some embodiments, the material of at least two layers of the mesh structure may be the same to achieve better bending deformability. For example, if it is determined that a single layer thickness of H is used₁The metal mesh of (2) can achieve the desired shielding effect, however, the single-layer thickness is H₁The metal net is difficult to bend and deform to be tightly attached to the shell due to the reduction of ductility caused by the increase of the metal thickness, so that N metal nets with the thickness of H can be adopted₂(H₁＝N×H₂) The metal meshes are overlapped to form a shielding layer. Because the net-shaped structure with smaller thickness has stronger deformation and bending capability, the bending and bending capability of the shielding layer can be improved by superposing a plurality of layers of net-shaped structures with smaller thickness, and the shielding layer is favorably and closely attached to the shell (particularly the shell with a complex shape). Compared with a single-layer net structure with the same thickness, the multi-layer net structure is stronger in bending deformation capability and better in shielding effect.

In some embodiments, two adjacent layers in the mesh structure can be directly stacked by means of adhesive-backed adhesion. For example, the contact surface of two adjacent layers of net structures can be coated with a back adhesive, and the two adjacent layers of net structures can be directly superposed. Two adjacent layers are directly overlapped in a back adhesive sticking mode, and the operation is simple and convenient. In some embodiments, adjacent layers of the mesh structure may be secured therebetween by fasteners (e.g., wires, screws, bolts, pins). In some embodiments, two adjacent layers of the mesh structure may be laminated together by an interlayer. For example, in the process of preparing a medical device shell (e.g., an irregular-shaped CT device shell) by laminating the outer mold part and the inner mold part, the multi-layer mesh structure can be placed on the contact surface where the outer mold part or the inner mold part is laminated with the outer shell, and the outer shell and the shielding layer are integrally formed by means of interlayer lamination.

In some embodiments, adjacent two layers in the mesh structure may be indirectly stacked via a transition layer. The material of the transition layer may be a high saturation induction density material. For example, the material of the transition layer may be a copper-iron alloy, a copper foil material, an aluminum alloy, or the like. In some embodiments, the material of the transition layer may be determined according to the kind of material of the adjacent two layers. For example, in the context of low frequency electromagnetic fields, the first layer of the mesh structure (which may refer to the layer of the mesh structure that is in contact with the interior space of the medical device, i.e., the layer that is remote from the housing) may employ a high permeability material for rapidly reducing the magnetic field; the transition layer can be made of high saturation magnetic induction density materials and used for storing energy of high magnetic conductivity materials and improving the shielding effect of an electromagnetic field. If a high-frequency electromagnetic field exists, a low-permeability material can be adopted for the second layer in the net structure to shield the high-frequency electromagnetic field. In some embodiments, a transition layer may be further stacked on the second layer of the mesh structure for "storing" energy of the low magnetic permeability material, so as to further improve the shielding effect of the electromagnetic field. In some embodiments, suitable transition layer materials and/or structural properties (e.g., thickness, mesh size, shape, and/or distribution density, etc.) may be determined through simulation experiments.

It should be noted that the above description of the present application is provided for illustrative purposes only and is not intended to limit the scope of the present application. Various changes and modifications will occur to those skilled in the art based on the description herein. However, such changes and modifications do not depart from the scope of the present application.

Compared with the prior art, the embodiments in the present specification may bring about beneficial effects including but not limited to: (1) the laminating easy operation between the shielding layer that has network structure and the shell to the vibrations that the frame of medical equipment produced in rotatory in-process produced can prevent that the shielding layer from breaking away from the shell inboard, improved medical system's security between the shielding layer of network structure and the shell. (2) The shielding layer can be fixed at the inner side of the shell in a fastening piece or back adhesive pasting mode, the appearance of the equipment is not affected, and the shielding layer can be effectively protected from being damaged. (3) Through grounding the continuous shielding layer, the overall shielding effect of the shielding layer can be improved, and the electromagnetic field intensity in the scanning environment where the medical equipment is located is reduced. (4) The material, thickness, number of layers, size, shape and/or distribution density of the mesh structure can be determined according to the property of the electromagnetic field, the desired shielding effect, the installation space of the shielding layer, the shape, size of the electromagnetic field source component at the corresponding position and/or the shape of the housing at the corresponding position, the structure and form of the shielding layer can be flexibly adjusted, and different forms of shielding layers can be customized according to different types of medical equipment. (5) The adjacent two layers in the multi-layer net structure can be indirectly superposed through the transition layer, and the shielding effect of the electromagnetic field can be further improved by selecting a proper transition layer material. It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

Having thus described the basic concepts, it will be apparent to those of ordinary skill in the art having read this application that the foregoing disclosure is to be construed as illustrative only and is not limiting of the application. Various modifications, improvements and adaptations of the present application may occur to those skilled in the art, although they are not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the application may be combined as appropriate.

Moreover, those of ordinary skill in the art will understand that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, articles, or materials, or any new and useful improvement thereof. Thus, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as a "unit", "module", or "system". Furthermore, aspects of the present application may take the form of a computer program product embodied in one or more computer-readable media, with computer-readable program code embodied therein.

Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although implementations of the various components described above may be embodied in a hardware device, they may also be implemented as a pure software solution, e.g., installation on an existing server or mobile device.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more embodiments of the invention. This method of application, however, is not to be interpreted as reflecting an intention that the claimed subject matter to be scanned requires more features than are expressly recited in each claim. Rather, the inventive body should possess fewer features than the single embodiment described above.

In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the application are to be understood as being modified in certain instances by the terms "about", "approximately" or "substantially". For example, "about," "approximately," or "substantially" may indicate a ± 20% variation of the value it describes, unless otherwise stated. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

All patents, patent applications, patent application publications, and other materials (e.g., articles, books, specifications, publications, records, things, and/or the like) mentioned in this application are herein incorporated by reference in their entirety for all purposes except to the extent any document referred to above is incorporated by reference, to the extent any document referred to is inconsistent or contrary to this document, or to the broad scope of any claim that is later incorporated by reference herein. For example, if there is any inconsistency or conflict between the usage of terms that describe, define and/or associate with any of the incorporated materials and terms associated with this document, the terms described, defined and/or used in this document shall control this document.

Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the embodiments of the present application. Other variations are also possible within the scope of the present application. Thus, by way of example, and not limitation, alternative configurations of the embodiments of the present application can be viewed as being consistent with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to only those embodiments explicitly described and depicted herein.

Claims

1. A medical system, characterized in that the system comprises:

a medical device; and

the shielding layer is used for shielding electromagnetic field interference between the medical equipment and the external environment, the shielding layer is provided with a net structure, and the shielding layer is fixed on a shell of the medical equipment.

2. The system of claim 1, wherein the shielding layer is fixed inside the housing or inside the housing.

3. The system of claim 1, wherein the medical device comprises a frame, and the shield is connected to a metal portion of the frame by a screw or a ground terminal.

4. The system of claim 1, wherein the mesh structure comprises a plurality of layers, at least two layers of the mesh structure being of different materials.

5. The system of claim 1, wherein the mesh structure comprises a plurality of layers, at least two layers of the mesh structure being of the same material.

6. The system of claim 1, wherein the mesh structure comprises a plurality of layers, and adjacent layers of the mesh structure are directly stacked by a fastener, a sandwich lamination method or an adhesive-backed method.

7. The system of claim 1, wherein the mesh structure comprises a plurality of layers, and adjacent layers of the mesh structure are indirectly stacked via a transition layer.

8. The system of claim 1, wherein at least one of a material of the mesh structure, a thickness of the mesh structure, a number of layers of the mesh structure, a size or a shape of a mesh of the mesh structure is non-uniformly distributed along the housing.

9. The system of claim 1, wherein the surface of the housing has depressions or protrusions, and the mesh structure is in close contact with the surface of the housing.

10. A medical system, characterized in that the system comprises:

the medical equipment comprises a stand, a ray generating device and a ray receiving device, wherein an accommodating cavity extending along the longitudinal direction is formed in the stand, and the ray generating device and/or the ray receiving device are/is arranged in the stand or the accommodating cavity;

the shell comprises one or more insulating shells, the shell is fixed on the rack, and the shell shields the ray generating device and/or the ray receiving device; and

a shielding layer having a mesh structure or a sheet structure, the shielding layer being made of a metal or non-metal conductive material, the shielding layer being disposed at one or more positions of an outer surface, an inner surface, or an interior of the housing, the shielding layer being configured to be electrically connected with the rack or a metal portion on the rack.