Magnetic resonance coil arrangement and magnetic resonance coil apparatus for stereotactic surgery

Abstract

The utility model relates to the technical field of magnetic resonance, in particular to a magnetic resonance coil device and magnetic resonance coil equipment for stereotactic surgery. The magnetic resonance coil device comprises: a rigid base housing; the support is installed on the base shell and used for being connected with a stereotactic frame, and the stereotactic frame is used for fixing an operation part of an operated person; the two flexible side part shells are respectively connected to the base part shell, and the two flexible side part shells are arranged in a first direction in a spaced manner; the plurality of radio frequency coils are arranged in the base part shell and the two side part shells; each side shell is configured to be capable of bending and deforming towards the other side shell around a second direction perpendicular to the first direction, so that the two side shells cover the outer side of the stereotactic frame in an attached manner; the radio frequency coil in the side housing is configured to deform along with the deformation of the side housing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear magnetic resonance, and in particular to a magnetic resonance coil device and a magnetic resonance coil equipment for stereotactic surgery. BACKGROUND

[0002] During a neurosurgery, a surgeon often uses stereotactic guidance to reach a target location. And, the surgery delivery is often guided by using magnetic resonance imaging (MRI) technology. This stereotactic surgery requires the use of a stereotactic frame to fix a surgery site (e.g. a head) of a subject.

[0003] Therefore, it is of great significance to optimize the design of a magnetic resonance device, in particular a magnetic resonance coil, so as to better cooperate with a stereotactic frame, thereby helping a surgeon to complete a stereotactic surgery with high quality. SUMMARY

[0004] In view of this, the present application provides a magnetic resonance coil device and a magnetic resonance coil equipment for stereotactic surgery.

[0005] In a first aspect, the present application provides a magnetic resonance coil device for stereotactic surgery, comprising:

[0006] a rigid base housing;

[0007] a bracket mounted to the base housing for connecting a stereotactic frame for fixing a surgery site of a subject;

[0008] two flexible side housings respectively connected to the base housing and arranged apart along a first direction;

[0009] a plurality of radio frequency coils arranged in the base housing and the two side housings;

[0010] wherein each of the side housings is configured to be deformed to bend around a second direction perpendicular to the first direction towards the other side housing, so that the two side housings conformingly cover the outside of the stereotactic frame;

[0011] wherein the radio frequency coils in the side housings are configured to be deformed following the deformation of the side housings.

[0012] In some possible implementations, the base housing defines a recessed portion recessed inward in a third direction perpendicular to the first direction and the second direction, the recessed portion being used to receive the stereotactic frame and the surgery site.

[0013] In some possible implementations, the radio frequency coil disposed in the base housing is arranged along a contour of the recess at a back side of the recess.

[0014] In some possible implementations, the recess is formed as a through slot penetrating in the second direction, and the support includes a first support body and a second support body respectively configured at opposite sides of the through slot in the second direction, the first support body having a connector for connecting the stereotactic frame.

[0015] In some possible implementations, further comprising:

[0016] a strap configured to tighten the two side housings towards the stereotactic frame from outside of the two side housings when the two side housings are snugly covered outside of the stereotactic frame.

[0017] In some possible implementations, the strap includes:

[0018] a first strap body extending from the base housing in proximity to the connection portion of one of the side housings;

[0019] a second strap body extending from the base housing in proximity to the connection portion of the other side housing.

[0020] In some possible implementations, the base housing is adapted to be fitted in a fitting slot of a magnetic resonance examination bed, opposite sides of the base in a first direction respectively have a spacer assembly, the spacer assembly includes a plurality of spacers stacked in the first direction, the plurality of spacers includes an anti-skid spacer located at an outermost side in the first direction;

[0021] wherein a fitting gap between the base housing and the fitting slot in the first direction is compensated by changing a number and / or thickness of the spacers in the spacer assembly, so that the base housing and the fitting slot are interference fitted in the first direction.

[0022] In some possible implementations, a weight of the surgical site is carried by the base housing via the stereotactic frame and the support.

[0023] In some possible implementations, the first direction corresponds to a left-right direction of the subject, the second direction corresponds to a length direction of the subject, and the surgical site is a head.

[0024] In a second aspect, a magnetic resonance coil device for stereotactic surgery is provided, including:

[0025] the apparatus as described in the first aspect; and

[0026] The stereoscopic framework.

[0027] The magnetic resonance coil device provided in this application can be used with a stereotactic frame for fixing the surgical site, and the radio frequency coil in the device can be adapted to the shape of the stereotactic frame and cover its outer side, so that the radio frequency coil is as close as possible to the surgical site to obtain a high-quality magnetic resonance signal. This helps surgeons to complete stereotactic surgery on the surgical site with high quality. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0029] Figure 1 This is a schematic diagram of the appearance of the magnetic resonance coil device provided in the embodiments of this application.

[0030] Figure 2 Observing from another perspective Figure 1 The diagram shows the situation, in which the straps are omitted.

[0031] Figure 3 yes Figure 2 Side view.

[0032] Figure 4 Observing from another perspective Figure 2 The diagram shows the gasket assembly broken down.

[0033] Explanation of reference numerals in the attached figures:

[0034] DR1 - First direction, DR2 - Second direction, DR3 - Third direction;

[0035] 1-Base shell, 11-Recessed portion;

[0036] 2-Side shell;

[0037] 3-Support, 31-First frame, 311-Connector, 32-Second frame;

[0038] 4-Strap, 41-First strap body, 42-Second strap body;

[0039] 5-Gasket assembly, 51-Gasket, 52-Anti-slip pad, 53-Bolt;

[0040] 6-Stereotactic frame. Detailed Implementation

[0041] For the purpose of making the objects, technical solutions and advantages of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the scope of protection of the present application. It can be understood that some technical means of the various embodiments described herein can be replaced or combined with each other without conflict.

[0042] In the description and claims of the present specification, if there are terms "first", "second", etc., they are only used to distinguish the described objects, and do not have any sequential or technical meaning. Therefore, the objects defined with "first", "second", etc. can include one or more of the objects explicitly or implicitly. And "one" or "an" and the like similar words do not represent a quantity limitation, but represent the existence of at least one, and "more" represents no less than two.

[0043] Figures 1 to 4 A magnetic resonance coil device (hereinafter, sometimes referred to as the present device) according to an embodiment of the present application is shown, which can be used for magnetic resonance imaging scanning of a surgical site of a subject, and can be further used for stereotactic surgery of the surgical site based on the magnetic resonance imaging scanning. In the present embodiment, the surgical site is specifically the head of the subject, that is, using the present device, stereotactic surgery can be performed on the head of the subject (for example, the nose, eyes or temporomandibular joint of the head, etc.).

[0044] The present device includes a base housing 1, a side housing 2, a bracket 3 and an omitted radio frequency coil.

[0045] The base housing 1 is a rigid structure, which can be formed of resin, for example.

[0046] The bracket 3 is mounted to the base housing 1, and is used to connect a stereotactic frame 6, which is used to fix the head of the subject as the surgical site. For simplicity, the position of the stereotactic frame 6 is schematically shown by a dashed circle in Figure 4

[0047] The side housing 2 is a flexible structure, and two are configured. The two side housings 2 are respectively connected to the base housing 1, and are arranged apart along a first direction DR1. The first direction DR1 corresponds to the left-right direction of the subject.

[0048] ​A plurality of radio frequency coils are arranged in the base housing 1 and the two side housings 2 for receiving magnetic resonance signals from the surgical site (the head). The plurality of radio frequency coils can constitute a coil array. Since the radio frequency coils are shielded from view by the outer surfaces of the base housing 1 and the side housings 2, they are not shown in the figures.

[0049] Each of the side housings 2 is configured to be able to be deformed in bending about a second direction DR2 perpendicular to the first direction DR1 towards the other side housing 2 (see Figure 3 Figure 3 The two opposite short arrows in the figure schematically show the direction of movement of the extended ends of the two side housings 2 when they are deformed in bending, so that the two side housings 2 fit snugly over the outside of the stereotactic frame 6. Furthermore, the radio frequency coils in the side housings 2 are configured to be deformed in following the deformation of the side housings 2. The second direction DR2 corresponds to the lengthwise direction of the subject.

[0050] Exemplarily, the stereotactic frame 6 can use the pins arranged thereon to clamp the skull of the subject's head, so that the subject's head and the stereotactic frame 6 always maintain a stable relative position. Then, the stereotactic frame 6 is fixedly connected to the support 3. Then, by deforming each of the side housings 2 in bending about the second direction DR2 towards the other side housing 2, the two side housings 2 fit snugly over the outside of the stereotactic frame 6, whereby each of the radio frequency coils can be well close to the head as the surgical site, helping to obtain high-quality magnetic resonance scanning signals. In addition, through such a design, the surgical site cannot move relative to the base housing 1, and always maintains a fixed relative position with the radio frequency coils, helping to smoothly implement the stereotactic surgery of the surgical site.

[0051] In implementation, the subject can use the device in a supine position. In this case, the weight of the surgical site is borne by the base housing 1 via the stereotactic frame 6 and the support 3.

[0052] The base housing 1 defines a recess 11 recessed inwardly in a third direction DR3, the recess 11 being for receiving the stereotactic frame and the surgical site. The third direction DR3 is perpendicular to the first direction DR1 and the second direction DR2, and the third direction DR3 corresponds to the front-to-back direction of the subject. By providing the recess 11, the shape of the positioning frame can be better adapted, which helps the radio frequency coils located in the base housing to be close to the surgical site to receive high-quality magnetic resonance signals.

[0053] Furthermore, the radio frequency coils arranged in the base housing are arranged along the contour of the recess 11 on the back side of the recess 11, so that the radio frequency coils located in the base housing are better close to the surgical site.

[0054] ​The recess 11 is formed as a through groove that is through in the second direction DR2 and has a circular arc shape in cross section, and the bracket 3 includes a first bracket body 31 and a second bracket body 32 that are respectively arranged on opposite sides of the through groove in the second direction DR2, and the first bracket body 31 has a connecting piece 311 for connecting the stereoscopic directional frame 6. In the present embodiment, the connecting piece 311 has a clamping groove into which a connecting terminal of the stereoscopic directional frame 6 is clamped, and the connecting piece 311 is loosely mounted to the first bracket body 31 by a screw.

[0055] In addition, the band 4 is configured to tighten the two side housings 2 toward the stereoscopic directional frame 6 from the outside of the two side housings 2 when the two side housings 2 are attached to cover the outside of the stereoscopic directional frame 6.

[0056] Specifically, the band 4 includes a first band body 41 and a second band body 42, wherein the first band body 41 extends from the vicinity of the connecting portion of one of the side housings 2 to the base housing 1, and the second band body 42 extends from the vicinity of the connecting portion of the other side housing 2 to the base housing 1. In the implementation, the two side housings 2 located on the inner circumferential side of the closed ring defined by connecting the extending end of the first band body 41 and the extending end of the second band body 42 together are tightened.

[0057] In the implementation, the device (more specifically, the base housing 1 of the device) can be tightly fitted and embedded in the embedding groove of the magnetic resonance examination bed for use. However, different models of magnetic resonance examination beds can have embedding grooves of different sizes. In order to enable the device to adapt to embedding grooves of various sizes, two spacer assemblies 5 are respectively arranged on opposite sides of the base housing 1 in the first direction DR1, and each spacer assembly 5 includes a plurality of spacers 51 stacked in the first direction DR1. By changing the number and / or thickness of the spacers 51 in the spacer assembly 5, the fitting gap between the base housing 1 and the embedding groove in the first direction DR1 is compensated for, so that the base housing 1 and the embedding groove are in interference fit in the first direction DR1.

[0058] For each of the aforementioned spacer assemblies 5, the plurality of spacers 51 thereof are fastened to the side of the base housing 1 via a bolt 53, and the plurality of spacers 51 at least include an anti-skid spacer 52 located on the outermost side in the first direction DR1. The anti-skid spacer 52 has a rough surface with a high coefficient of friction, so that the static friction force of the anti-skid spacer 52 with the wall of the embedding groove perpendicular to the first direction DR1 can be increased, and thus the device is inhibited from being unintentionally detached from the examination bed.

[0059] Although the device is only described above with the surgical site being the head of the subject being operated on as an example, it should be understood that the surgical site can also be other body parts, such as one of the limbs.

[0060] In addition, the embodiment of the present application further provides a magnetic resonance coil device, which comprises the magnetic resonance coil device and the stereotactic frame 6.

Claims

1. A magnetic resonance coil arrangement for stereotactic surgery, characterized by Comprising: a rigid base housing; a bracket mounted to the base housing for connecting a stereotactic frame for fixing a surgical site of a subject; two flexible side housings respectively connected to the base housing and spaced apart along a first direction; a plurality of radio frequency coils disposed in the base housing and the two side housings; wherein each of the side housings is configured to be deformed in bending about a second direction perpendicular to the first direction towards the other side housing, so that the two side housings conformingly cover outside of the stereotactic frame; wherein the radio frequency coils in the side housings are configured to be deformed following the deformation of the side housings.

2. The apparatus of claim 1, wherein, The base housing defines a recessed portion recessed inward in a third direction perpendicular to the first and second directions, the recessed portion for receiving the stereotactic frame and the surgical site.

3. The apparatus of claim 2, wherein, The radio frequency coils disposed in the base housing are arranged along the contour of the recessed portion on the back side of the recessed portion.

4. The apparatus of claim 3, wherein, The recessed portion is formed as a through slot in the second direction, the bracket includes a first bracket body and a second bracket body respectively configured on opposite sides of the through slot in the second direction, the first bracket body having a connector for connecting the stereotactic frame.

5. The apparatus of claim 3, wherein, Further comprising: a strap configured to tighten the two side housings towards the stereotactic frame from outside of the two side housings when the two side housings conformingly cover outside of the stereotactic frame.

6. The apparatus of claim 5, wherein, The strap includes: a first strap body extending from the base housing in the vicinity of the connection portion of one of the side housings; a second strap body extending from the base housing in the vicinity of the connection portion of the other side housing.

7. The apparatus of claim 1, wherein, The base housing is adapted to be fitted in a fitting slot of a magnetic resonance examination bed, opposite sides of the base in the first direction respectively have a spacer assembly, the spacer assembly includes a plurality of spacers stacked in the first direction, the plurality of spacers includes an anti-slip spacer located at the outermost side in the first direction; wherein by changing the number and / or thickness of the spacers in the spacer assembly, a fitting gap between the base housing and the fitting slot in the first direction is compensated, so that the base housing and the fitting slot are interference fit in the first direction.

8. The apparatus of any one of claims 1 to 7, wherein, The weight of the surgical site is carried by the base housing via the stereotactic frame and the bracket.

9. The apparatus of claim 8, wherein, The first direction corresponds to the left-right direction of the subject, the second direction corresponds to the length direction of the subject, and the surgical site is the head.

10. A magnetic resonance coil device for stereotactic surgery, characterized by Comprising: the apparatus of any one of claims 1 to 9; and the stereotactic frame.

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