CN217689366U - Magnetic resonance local coil and magnetic resonance scanning device - Google Patents

Abstract

The present application relates to a magnetic resonance local coil and a magnetic resonance scanning apparatus. The magnetic resonance local coil comprises an upper shell and a lower shell which are detachably connected; the magnetic resonance local coil further includes a first coil serving as a transmission coil and a second coil serving as a reception coil; at least one group of first coils and a connector electrically connected with the at least one group of first coils are arranged in the upper shell; at least two groups of second coils and at least one group of first coils are arranged in the lower shell; the upper shell is installed on the lower shell in a matched mode, and a first coil located in the upper shell is electrically connected with a first coil located in the lower shell through a connector. Like this, reduced the coil kind in the upper casing to simplify the structure that is used for the connector of being connected with lower casing on the upper casing, improved the grafting efficiency between upper casing and the lower casing.

Description

Magnetic resonance local coil and magnetic resonance scanning device

Technical Field

The present application relates to the field of medical equipment technology, and in particular, to a magnetic resonance local coil and a magnetic resonance scanning apparatus.

Background

A magnetic resonance scanner is a medical apparatus for imaging and diagnosing a patient by using a magnetic resonance phenomenon, and different local radio frequency coils, such as a head coil, a shoulder coil, a knee coil, and the like, are used when scanning different parts of the patient. The traditional receiving and transmitting integrated knee coil generally adopts a structure that an upper shell and a lower shell are separated, and the knee is enclosed by the upper shell and the lower shell in a mutually covering mode. Wherein, all be provided with receiving coil and transmitting coil in last casing and the lower casing, go up the casing and connect through the connector with lower casing. However, the connector of the above knee coil is complicated, and the efficiency of connecting the upper and lower cases is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a magnetic resonance local coil and a magnetic resonance scanning apparatus to solve the problem of the complicated connector of the conventional knee coil.

A first aspect of the application provides a magnetic resonance local coil comprising an upper housing and a lower housing detachably connected;

the magnetic resonance local coil further comprises a first coil serving as a transmitting coil and a second coil serving as a receiving coil;

at least one group of first coils and a connector electrically connected with the at least one group of first coils are arranged in the upper shell;

at least two groups of second coils and at least one group of first coils are arranged in the lower shell;

the upper shell is installed on the lower shell in a matched mode, and the first coil located in the upper shell is electrically connected with the first coil located in the lower shell through the connector.

Foretell magnetic resonance local coil only sets up the first coil that is used for transmitting signal in the upper casing, when keeping receiving and dispatching integrative function, has reduced the coil kind in the upper casing to simplified the structure that is used for on the upper casing with lower housing connection's connector, improved the grafting efficiency between upper casing and the lower casing.

In one embodiment, the lower case includes:

a base having a support surface for supporting a specific body part, the upper housing being detachably coupled to the base; and

the flexible assembly is arranged on two opposite sides of the base, one end of the flexible assembly is connected with the base, and the other end of the flexible assembly, which is located on two sides of the base, is overlapped to form an accommodating cavity with the supporting surface in a matched mode.

In one embodiment, at least one group of the first coils and at least one group of the second coils are arranged in the base, at least one group of the second coils are arranged in the flexible assembly, and the second coils in the flexible assembly and the second coils in the base form a receiving array together.

In one embodiment, the second coil in the base and the second coil in the flexible assembly are integrally provided.

In one embodiment, the upper housing is connected to the base, wherein the upper housing covers the outer side of the flexible assembly to stabilize the formation of the accommodating cavity.

In one embodiment, the upper housing has an arcuate cladding surface that surrounds the flexible assembly; the connectors are arranged on two opposite sides of the upper shell; the connector is detachably connected with the base.

In one embodiment, the flexible assembly includes a flexible body having a mounting cavity in which the second coil is embedded.

In one embodiment, the two opposite sides of the base are respectively provided with a connecting port and an inserting port which are arranged at intervals, and the inserting ports are positioned on the outer sides of the connecting ports; the end part of the flexible main body is embedded in the connecting port; the connector is connected with the interface.

In one embodiment, the two flexible components are connected through a connecting component, and the connecting position of the two flexible components along the circumferential direction is adjustable;

the connecting component comprises one or more of a binding band, a magic tape, a hidden button and a plug-in button;

and/or, the magnetic resonance local coil further comprises a tray, the tray is positioned on one side of the lower shell far away from the upper shell, and the lower shell is arranged on the tray; the tray is provided with a holding part for holding.

A second aspect of the application provides a magnetic resonance scanning apparatus comprising the magnetic resonance local coil of the first aspect.

The magnetic resonance scanning equipment only arranges the first coil used for transmitting signals in the upper shell of the magnetic resonance local coil, and reduces the types of the coils in the upper shell while keeping the receiving and transmitting functions, thereby simplifying the structure of the connector used for being connected with the lower shell on the upper shell and improving the inserting efficiency between the upper shell and the lower shell.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a side view of an magnetic resonance local coil provided in accordance with an embodiment of the present application in an unassembled state;

figure 2 is an isometric view of the magnetic resonance local coil of figure 1;

figure 3 is an isometric view of the magnetic resonance local coil of figure 1 in an assembled state;

figure 4 is a top view of the base of the magnetic resonance local coil of figure 1;

figure 5 is an assembly schematic of the flexible assembly and base of the magnetic resonance local coil of figure 1.

Description of reference numerals:

10-a magnetic resonance local coil; 110-an upper housing; 111-connector; 112-cladding surface; 120-a lower housing; 121-a base; 121 a-a support surface; 121 b-connection port; 121 c-a socket; 122-a flexible component; 122 a-a flexible body; 123-an accommodating cavity; 130-a first coil; 140-a second coil; 150-a tray; 151-a grip portion.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, in this specification, the term "and/or" includes any and all combinations of the associated listed items.

In traditional receiving and dispatching integrative knee coil, the connector structure that is used for connecting between last casing and the lower casing is more complicated, leads to above casing and difficult assembly when the casing assembles down, has not only reduced the connection efficiency of last casing and lower casing, has reduced the life of connector moreover.

In view of the above problems, embodiments of the present application provide a magnetic resonance local coil and a magnetic resonance scanning apparatus, which can simplify the structure of a connector on an upper housing for connecting with a lower housing, and improve the plugging efficiency between the upper housing and the lower housing.

In a first aspect, and as illustrated with reference to figures 1, 2 and 3, embodiments of the present application provide a magnetic resonance local coil 10 for use in examining a knee of a patient. The magnetic resonance local coil 10 includes an upper housing 110 and a lower housing 120 that are detachably connected.

The magnetic resonance local coil 10 further includes a first coil 130 and a second coil 140, the first coil 130 serving as a transmission coil and the second coil 140 serving as a reception coil. Wherein the transmitting coil generates a radio frequency transmitting field/B1 field in the region of interest to be detected, and the transmitting coil is driven by a radio frequency power amplifier controlled by a spectrometer system. During excitation, the nuclear spin system absorbs energy, causing a magnetic moment to precess around the direction of the main magnetic field. After excitation, the precessing magnetic moment will undergo a free induction decay, releasing its absorbed energy and returning to a steady state. The energy released in the free induction attenuation process is transmitted to the periphery by a radio frequency electromagnetic field, a receiving coil arranged near the excited part of the human body is induced by the radio frequency electromagnetic field to generate induction voltage, and the induction voltage is amplified by a preamplifier to obtain a nuclear magnetic resonance signal.

Specifically, at least one first coil 130 and a connector 111 electrically connected to the at least one first coil 130 are disposed in the upper casing 110; at least two sets of second coils 140 and at least one set of first coils 130 are arranged in the lower shell 120; the upper housing 110 is fittingly mounted to the lower housing 120, and the first coil 130 located in the upper housing 110 is electrically connected to the first coil 130 located in the lower housing 120 through the connector 111.

In the magnetic resonance local coil 10, the first coil 130 for transmitting signals is only arranged in the upper shell 110, so that the types of coils in the upper shell 110 are reduced while the transmitting and receiving functions are kept, the structure of the connector 111 for connecting with the lower shell 120 on the upper shell 110 is simplified, and the plugging efficiency between the upper shell 110 and the lower shell 120 is improved.

In one embodiment, the lower housing 120 includes:

a base 121 having a support surface 121a for supporting a specific body part, the upper case 110 being detachably coupled to the base 121; and

the flexible assembly 122 is arranged on two opposite sides of the base 121, the flexible assembly 122 is arranged on one end of the flexible assembly 122 and connected with the base 121, and the other ends of the flexible assemblies 122 on two sides of the base 121 are overlapped to form an accommodating cavity 123 by matching with the supporting surface 121 a.

By providing the flexible member 122 and disposing the second coil 140 originally disposed in the upper housing 110 in the flexible member 122, only the first coil 130 remains within the upper housing 110. Thus, on one hand, the types of coils in the upper housing 110 are reduced, thereby simplifying the structure of the connector 111 for connecting with the lower housing 120 on the upper housing 110 and improving the insertion efficiency between the upper housing 110 and the lower housing 120; on the other hand, the flexible assembly 122 can be better attached to the knee, and the detection effect of the magnetic resonance local coil 10 is improved.

In one embodiment, at least one first coil 130 and at least one second coil 140 are disposed in the base 121, at least one second coil 140 is disposed in the flexible assembly 122, and the second coil 140 disposed in the flexible assembly 122 and the second coil 140 disposed in the base 121 together form a receiving array.

Thus, after the knee is located in the accommodating cavity 123, the transmitting coil and the receiving coil can be arranged around the knee, so that the detection effect of the magnetic resonance local coil 10 is better.

In one embodiment, the second coil 140 in the base 121 and the second coil 140 in the flexible member 122 are integrally disposed. Thus, two sets of the second coils 140 can be simultaneously manufactured and two sets of the second coils 140 can be simultaneously assembled, thereby improving the manufacturing efficiency and the assembling efficiency of the second coils 140.

In one embodiment, the upper housing 110 is connected to the base 121, wherein the upper housing 110 covers the flexible component 122 to stabilize the formation of the accommodating cavity 123. In this way, the rigid upper housing 110 can help the flexible member 122 and the lower housing 120 form a stable accommodating cavity 123 together, which can improve the stability of the magnetic resonance local coil 10.

Further, the upper housing 110 has an arc-shaped cladding surface 112, and the cladding surface 112 is clad on the outer side of the flexible component 122. The connectors 111 are disposed on two opposite sides of the upper housing 110, and the connectors 111 are detachably connected to the base 121. Wherein the connectors 111 are located on both sides of the covering surface 112.

It is understood that the connector 111 has at least two functions: one is for assembling the upper case 110 and the lower case 120 such that the upper case 110 can be positioned above the lower case 120 and can be separated from the lower case 120 if necessary; the second is for electrically connecting the first coil 130 in the upper housing 110 and the first coil 130 (or electronic component) in the lower housing 120.

In one embodiment, as shown in fig. 5, the flexible assembly 122 includes a flexible body 122a, the flexible body 122a having a mounting cavity (not shown) in which the second coil 140 is embedded. Since the flexible member 122 has a certain flexibility and can be bent adaptively according to the knee surface of the patient, in order to avoid the second coil 140 from being damaged, the flexible body 122a can be made of a foam material, a fabric, a fur, etc. The flexible body 122a may have a certain rigidity, which can protect the second coil 140 inside the flexible assembly 122 on the basis of satisfying the deformation and bending of the flexible assembly, and avoid the second coil 140 from being damaged. In addition, the flexible main body 122a made of the material can enable the flexible component 122 to be better fit with the knee of the patient on the basis of meeting the deformation of the flexible component 122.

The flexible body 122a may be made of Ethylene Vinyl Acetate (EVA) which has excellent flexibility, elasticity, transparency, low temperature flexibility, adhesiveness, compatibility, and workability, and is resistant to aging and easily colored.

In one embodiment, referring to fig. 4 and 5, the base 121 is provided with a connection port 121b and a connection port 121c at intervals on two opposite sides of the supporting surface 121a, and the connection port 121c is located outside the connection port 121 b; the end of the flexible body 122a is embedded in the connection port 121 b; the connector 111 is connected to the jack 121 c.

In one embodiment, the two flexible members 122 are connected by a connecting member (not shown), and the connecting position of the two flexible members 122 along the circumferential direction is adjustable. Thus, even if the knees of different patients are different in size, the knees can be wrapped and attached. It will be appreciated that the connection assembly may be provided at the ends of the two flexible assemblies 122. The connecting component comprises one or more of a bandage, a magic tape, a hidden button and a plug-in button. In this way, the two flexible elements 122 are fixed by means of a binding, pressing or insertion, so that the magnetic resonance local coil 10 can be held in a knee-covering state.

Specifically, the magnetic resonance local coil 10 further includes a tray 150, the tray 150 is located on a side of the lower casing 120 away from the upper casing 110, the lower casing 120 is disposed on the tray 150, and a holding portion 151 for holding is disposed on the tray 150. By arranging the tray 150, the supporting area of the bottom of the magnetic resonance local coil 10 can be enlarged, and the stability of the magnetic resonance local coil 10 is improved; by providing the grip 151, it is convenient to move and carry the magnetic resonance local coil 10.

In a second aspect, embodiments of the present application provide a magnetic resonance scanning apparatus comprising a magnetic resonance local coil of the first aspect. The magnetic resonance scanning device may be a high field magnetic resonance system with a main magnetic field strength of 3T (tesla), 5T, 7T or higher.

Further, the magnetic resonance scanning apparatus further comprises a magnetic resonance scanner, a patient table coupled to the magnetic resonance scanner, and a computer system connected to both the magnetic resonance scanner and the patient table. Among other things, magnetic resonance scanners may include magnet systems, gradient magnetic field systems, and body transmit coils. A magnet system is used to generate the static magnetic field and the magnet system surrounds to form a magnet bore. The gradient magnetic field system is arranged in the magnet hole and used for generating a gradient field. A body transmit coil is also mounted within the magnet bore for transmitting radio frequency pulses to excite nuclear spins of protons of the human body. The magnet system, the gradient magnetic field system and the body transmitting coil are sequentially distributed from outside to inside along the radial direction of the magnet hole, and the body transmitting coil surrounds to form a scanning hole. The magnetic resonance local coil can be carried on the patient bed so as to be movable into and out of the scanning bore. In a high field magnetic resonance system, the transmit coil of the magnetic resonance local coil may be controlled to be in a resonant state and the body transmit coil may be controlled to be in a detuned state for local transmission. Subsequently, the transmit coil of the magnetic resonance local coil can be controlled to be in a detuned state, and the receive coil of the magnetic resonance local coil is used for receiving the magnetic resonance signal. In the embodiment of the application, the transmitting coil of the magnetic resonance local coil is used for local transmission, so that the radio frequency transmitting efficiency can be improved in a high-field magnetic resonance system.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic depictions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features of the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. A magnetic resonance local coil, characterized in that the magnetic resonance local coil (10) comprises an upper housing (110) and a lower housing (120) which are detachably connected;

the magnetic resonance local coil (10) further comprises a first coil (130) and a second coil (140), the first coil (130) acting as a transmit coil and the second coil (140) acting as a receive coil;

at least one group of first coils (130) and a connector (111) electrically connected with the at least one group of first coils (130) are arranged in the upper shell (110);

at least two groups of second coils (140) and at least one group of first coils (130) are arranged in the lower shell (120);

the upper shell (110) is installed on the lower shell (120) in a matching mode, and the first coil (130) located in the upper shell (110) is electrically connected with the first coil (130) located in the lower shell (120) through the connector (111).

2. The magnetic resonance local coil according to claim 1, wherein the lower housing (120) includes:

a base (121) having a support surface (121 a) for supporting a specific body part, the upper case (110) being detachably coupled to the base (121); and

the flexible component (122) is arranged on two opposite sides of the base (121), one end of the flexible component (122) is connected with the base (121), and the other ends of the flexible component (122) located on two sides of the base (121) are overlapped to be matched with the supporting surface (121 a) to form an accommodating cavity (123).

3. The magnetic resonance local coil according to claim 2, wherein at least one set of the first coil (130) and at least one set of the second coil (140) are provided in the base (121), at least one set of the second coil (140) is provided in the flexible assembly (122), and the second coil (140) in the flexible assembly (122) and the second coil (140) in the base (121) together form a receiving array.

4. The magnetic resonance local coil according to claim 3, wherein the second coil (140) within the base (121) and the second coil (140) within the flexible assembly (122) are integrally provided.

5. The magnetic resonance local coil according to claim 2 or 3, characterized in that the upper housing (110) is connected to the base (121), wherein the upper housing (110) is wrapped outside the flexible assembly (122) to stabilize the formation of the receiving cavity (123).

6. The magnetic resonance local coil according to claim 5, wherein the upper case (110) has an arcuate cladding face (112), the cladding face (112) cladding the flexible member (122); the connectors (111) are arranged on two opposite sides of the upper shell (110); the connector (111) is detachably connected with the base (121).

7. The magnetic resonance local coil according to claim 6, wherein the flexible assembly (122) comprises a flexible body (122 a), the flexible body (122 a) having a fitting cavity in which the second coil (140) is embedded.

8. The magnetic resonance local coil according to claim 7, wherein the base (121) is provided with a connection port (121 b) and a connection port (121 c) at intervals on two opposite sides, and the connection port (121 c) is located outside the connection port (121 b); the end part of the flexible main body (122 a) is embedded in the connecting port (121 b); the connector (111) is connected to the socket (121 c).

9. The magnetic resonance local coil according to claim 2 or 3, characterized in that the two flexible members (122) are connected by a connecting member, and the connecting position of the two flexible members (122) in the circumferential direction is adjustable;

the connecting component comprises one or more of a binding band, a magic tape, a hidden button and a plug-in button;

and/or the magnetic resonance local coil (10) further comprises a tray (150), the tray (150) is positioned on one side of the lower shell (120) far away from the upper shell (110), and the lower shell (120) is arranged on the tray (150); the tray (150) is provided with a holding part (151) for holding.

10. A magnetic resonance scanning device, characterized by comprising a magnetic resonance local coil (10) as claimed in any one of claims 1-9.

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