阅读说明：本技术 一种射频线圈组件 (Radio frequency coil assembly ) 是由 侯祥明 陆海 于 2019-03-14 设计创作，主要内容包括：本发明涉及医疗器械技术领域,尤其涉及一种射频线圈组件。该射频线圈组件包括：壳体,形成具有容置空间的容置腔；多个第一线圈单元,设置在所述壳体的内部或表面；可移动部,设置在所述容置腔内并与所述容置腔的内壁连接；一个或多个第二线圈单元,设置在所述可移动部内部,且所述第二线圈能够随可移动部移动以背离或靠近所述容置腔内壁。本发明提供的射频线圈组件,可根据患者实际需要调节可移动部与患者被检测部之间的距离,实现该射频线圈组件扫描空间可调节,提高成像效果。患者被检测部与可移动部贴合,能够提高线圈的信噪比,使检测结果精度更高。(The invention relates to the technical field of medical instruments, in particular to a radio frequency coil assembly. The radio frequency coil assembly includes: the shell forms an accommodating cavity with an accommodating space; a plurality of first coil units disposed inside or on a surface of the case; the movable part is arranged in the accommodating cavity and is connected with the inner wall of the accommodating cavity; one or more second coil units arranged inside the movable part, wherein the second coil can move along with the movable part to depart from or approach the inner wall of the accommodating cavity. The radio frequency coil assembly provided by the invention can adjust the distance between the movable part and the detected part of the patient according to the actual needs of the patient, so that the scanning space of the radio frequency coil assembly can be adjusted, and the imaging effect is improved. The detected part of the patient is attached to the movable part, so that the signal-to-noise ratio of the coil can be improved, and the detection result precision is higher.)

1. A radio frequency coil assembly adapted for magnetic resonance head scanning, comprising:

the shell forms an accommodating cavity with an accommodating space;

a plurality of first coil units disposed inside or on a surface of the case;

the movable part is arranged in the accommodating cavity and is connected with the inner wall of the accommodating cavity;

one or more second coil units arranged inside the movable part, wherein the second coil can move along with the movable part to depart from or approach the inner wall of the accommodating cavity.

2. The radio frequency coil assembly according to claim 1, characterized in that the housing comprises a lower half (1), the movable portion being arranged on the lower half (1);

the radio frequency coil assembly further comprises an adjusting mechanism (2) for driving the movable part to move, wherein the adjusting mechanism (2) comprises a pressing mechanism (21) which is used for being pressed by the object detection part and can adjust the distance between the movable part and the object detection part when being pressed so as to enable the movable part to be attached to the patient detection part.

3. The radio frequency coil assembly according to claim 2, wherein the adjusting mechanism (2) further comprises a first rotating rod (22) and a second rotating rod (23), the pressing mechanism (21) is connected with the first rotating rod (22) and can drive the first rotating rod (22) to rotate, one end of the second rotating rod (23) is pivoted with the first rotating rod (22), the other end of the second rotating rod is connected with the movable portion, and an elastic portion (25) for providing torque is arranged between the second rotating rod (23) and the first rotating rod (22).

4. A radio frequency coil assembly according to claim 3, wherein the second rotating lever (23) comprises a connecting arm (231) and a pushing arm (232), the connecting arm (231) being pivotally connected at one end to the first rotating lever (22) and at the other end to the pushing arm (232), the pushing arm (232) being connected to the movable portion.

5. A radio frequency coil assembly according to claim 1, characterized in that the movable portion comprises two first flexible assemblies (11), and the two first flexible assemblies (11) are capable of wrapping around the neck of a subject;

and/or the movable part further comprises two second flexible members (12), and the two first flexible members (11) are capable of wrapping around the head of the subject.

6. A radio frequency coil assembly according to claim 2, characterized in that the housing further comprises an upper half (3) cooperating with the lower half, the upper half (3) being provided with a third flexible scanning portion (31), and the third flexible scanning portion (31) being capable of conforming to the front of the subject.

7. The radio frequency coil assembly according to claim 3, wherein the pressing mechanism (21) comprises a pressing protrusion (211), a return spring (212) and a connecting plate (213), two sides of the pressing protrusion (211) are respectively connected with one of the connecting plates (213), the return spring (212) is arranged at the bottom of the pressing protrusion (211), and two ends of the connecting plate (213) are respectively connected with the first rotating rod (22).

8. A radio frequency coil assembly adapted for magnetic resonance head scanning, the radio frequency coil assembly comprising an upper end and a lower end, and further comprising:

a plurality of first coil units provided at the upper end portion for receiving magnetic resonance signals of the upper end portion of the subject head;

one or more second coil units provided at the lower end portion for receiving magnetic resonance signals of the lower end portion of the subject's head, the second coil units being arranged for generating a radio frequency field having mainly a circumferential shape around the lower end portion or neck of the subject's head, and the radio frequency field being adjustable in relative angle to a main magnetic field generated by the magnet.

9. The radio frequency coil assembly according to claim 8, further comprising an adjusting mechanism (2) directly or indirectly connected to the second coil, wherein the adjusting mechanism (2) comprises a pressing mechanism (21) for being pressed by the detection portion of the object and being capable of adjusting the second coil unit to bend away from the inner wall of the accommodating chamber when being pressed.

10. The radio frequency coil assembly of claim 8, further comprising two first flexible assemblies disposed on opposite sides of an inner wall of the receiving cavity, wherein the two first flexible assemblies are each provided with a second coil sheet and cooperate to snugly embrace a neck region of a subject;

or, the radio frequency coil assembly further comprises two second flexible assemblies arranged on two sides of the inner wall of the accommodating cavity, the two second flexible assemblies are respectively provided with a second coil sheet, and the two second flexible assemblies are matched with each other to be capable of fitting and encircling the head area of the examined person.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a radio frequency coil assembly.

Background

With the continuous development of medical technology, it is a common medical means to scan a patient with a corresponding scanning device to obtain information of the patient. When a general scanning device performs scanning, the scanning is often performed by a magnetic field signal generated by a scanning coil inside the scanning device. Taking a head coil in a nuclear magnetic resonance system as an example, the head coil comprises a plurality of single coils, and the head of the patient can be scanned through a plurality of coil units, so that the mechanism of head lesion is obtained. However, in the existing scanning process, a gap may exist between the head coil and the head of the patient, and the gap is large, which affects the scanning result, and the obtained signal-to-noise ratio is low.

Therefore, a radio frequency coil assembly is needed to be provided, which can solve the problem that the imaging effect is affected by the gap between the head coil and the head of the patient in the prior art.

Disclosure of Invention

The invention aims to provide a radio frequency coil assembly which can be attached to the head of a patient to improve the imaging effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

a radio frequency coil assembly adapted for magnetic resonance head scanning, comprising:

the shell forms an accommodating cavity with an accommodating space;

a plurality of first coil units disposed inside or on a surface of the case;

the movable part is arranged in the accommodating cavity and is connected with the inner wall of the accommodating cavity;

one or more second coil units arranged inside the movable part, wherein the second coil can move along with the movable part to depart from or approach the inner wall of the accommodating cavity.

Preferably, the housing includes a lower half portion on which the movable portion is provided;

the radio frequency coil assembly further comprises an adjusting mechanism for driving the movable part to move, wherein the adjusting mechanism comprises a pressing mechanism which is used for being pressed by the object detection part and can adjust the distance between the movable part and the object detection part when being pressed so as to enable the movable part to be attached to the patient detection part.

As preferred, adjustment mechanism still includes first dwang and second dwang, pressing means with first dwang is connected and can be driven first dwang rotates, second dwang one end with first dwang pin joint, the other end with but the movable part is connected, the second dwang with be provided with the elasticity portion that provides the moment of torsion between the first dwang.

Preferably, the second rotating rod comprises a connecting arm and a pushing arm, one end of the connecting arm is pivoted with the first rotating rod, the other end of the connecting arm is fixedly connected with the pushing arm, and the pushing arm is connected with the movable part.

Preferably, the movable portion comprises two first flexible components, and the two first flexible components are capable of wrapping around the neck of the subject;

and/or the movable portion further comprises two second flexible members, and the two first flexible members are capable of wrapping around the head of the subject.

Preferably, the housing further comprises an upper half part matched with the lower half part, the upper half part is provided with a third flexible scanning part, and the third flexible scanning part can be attached to the front of the object.

Preferably, the pressing mechanism comprises a pressing protrusion, a return spring and a connecting plate, two sides of the pressing protrusion are respectively connected with the connecting plate, the return spring is arranged at the bottom of the pressing protrusion, and two ends of the connecting plate are respectively connected with the first rotating rod.

A radio frequency coil assembly adapted for magnetic resonance head scanning, the radio frequency coil assembly comprising an upper end and a lower end, and further comprising:

a plurality of first coil units provided at the upper end portion for receiving magnetic resonance signals of the upper end portion of the subject head;

one or more second coil units provided at the lower end portion for receiving magnetic resonance signals of the lower end portion of the subject's head, the second coil units being arranged for generating a radio frequency field having mainly a circumferential shape around the lower end portion or neck of the subject's head, and the radio frequency field being adjustable in relative angle to a main magnetic field generated by the magnet.

Preferably, the adjustment mechanism is directly or indirectly connected with the second coil, and the adjustment mechanism comprises a pressing mechanism which is pressed by the object to be detected and can adjust the second coil unit to bend towards the direction away from the inner wall of the accommodating cavity when being pressed.

Preferably, the radio frequency coil assembly further comprises two first flexible assemblies arranged on two sides of the inner wall of the accommodating cavity, the two first flexible assemblies are respectively provided with a second coil sheet, and the two first flexible assemblies are matched with each other so as to be capable of fitting and encircling a neck region of a detected person;

or, the radio frequency coil assembly further comprises two second flexible assemblies arranged on two sides of the inner wall of the accommodating cavity, the two second flexible assemblies are respectively provided with a second coil sheet, and the two second flexible assemblies are matched with each other to be capable of fitting and encircling the head area of the examined person.

The invention has the beneficial effects that:

according to the radio frequency coil assembly provided by the invention, the second coil unit is arranged in the movable part and can move along with the movable part to deviate from or approach the inner wall of the accommodating cavity, and the position of the second coil unit is adjusted according to the actual needs of detected parts of different objects, so that the second coil unit is kept attached to the detected part of a patient, and the imaging effect is improved. Meanwhile, the radio frequency coil assembly can meet different detection objects and has good individual applicability.

The medical imaging equipment provided by the invention comprises the radio frequency coil assembly, and the movable part can be adjusted when the object is inspected, so that the coil unit can be well attached to detected parts of different objects, the signal-to-noise ratio of the coil is improved, and the detection result precision is higher.

Drawings

FIG. 1 is a schematic diagram of a first perspective of a radio frequency coil assembly according to an embodiment of the present invention;

FIG. 2 is a structural schematic diagram of the radio frequency coil assembly provided in FIG. 1 from a second perspective;

FIG. 3 is a top view of the radio frequency coil assembly provided in FIG. 1;

FIG. 4 is a schematic structural view of the upper part provided by the present invention;

FIG. 5 is a schematic view of the lower half of the present invention in a natural state;

fig. 6 is a schematic view of the lower half of the working state provided by the present invention.

FIG. 7 is a schematic view of the adjustment mechanism provided by the embodiment of the present invention in a natural state;

FIG. 8 is a schematic view of an adjustment mechanism provided in accordance with an embodiment of the present invention in an operational state;

FIG. 9 is a schematic diagram of an adjustment mechanism provided by an embodiment of the present invention in a non-depressed state;

FIG. 10 is a schematic view of the adjustment mechanism of the present invention in a state clamping a smaller ball;

FIG. 11 is a schematic view of the adjustment mechanism of the present invention in a state clamping a larger ball;

FIG. 12 is a schematic diagram of a coil unit arrangement included in the upper half of a radio frequency coil assembly according to an embodiment of the present invention;

FIG. 13 is a schematic illustration of a distribution of local coil elements included in a lower portion of a radio frequency coil assembly in accordance with an embodiment of the present invention;

figure 14 is a schematic diagram of a coil unit distribution contained within a first flexible member of a radio frequency coil assembly according to an embodiment of the present invention.

In the figure:

1. a lower half; 11. a first flexible component; 12. a second flexible component; 13. a first rigid scanning unit; 14. a second rigid scanning unit; 15. a support housing; 2. an adjustment mechanism; 21. a pressing mechanism; 211. pressing the protrusion; 212. a return spring; 213. a connecting plate; 214. a sliding groove; 22. a first rotating lever; 23. a second rotating lever; 231. a connecting arm; 232. a push arm; 24. a first connecting shaft; 25. an elastic portion; 26. a third connecting shaft; 3. an upper half; 31. a third flexible scanning section; 32. and a third rigid scanning unit.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present application clearer, the technical solutions of the embodiments of the present application will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.