A novel magnetic resonance-guided bilateral breast intervention device

Abstract

This invention discloses a novel magnetic resonance-guided bilateral breast intervention device, relating to magnetic resonance imaging-guided breast intervention technology. It includes a base plate placed on a magnetic resonance examination table, a coil chamber support fixed to the top of the base plate, and a chest support fixed to the top of the coil chamber support. The chest support has coil chambers and shallow grooves corresponding to the bilateral breast tissues. This invention addresses the limitations of current open bilateral breast intervention devices, which only allow puncture from one side of the breast. In cases involving lesions on the inner side of the breast near the chest, the puncture path will traverse the entire unilateral breast, significantly reducing accuracy and causing additional damage to normal tissue. By using an asymmetrically designed chest support structure with open coil chambers and shallow grooves of controllable depth, it allows for bilateral needle insertion from the breast tissue, isolating the lesion-free side of the breast and providing bidirectional intervention for unilateral breast intervention.

Description

Technical Field

[0001] This utility model relates to magnetic resonance imaging-guided breast intervention technology, specifically a novel magnetic resonance imaging-guided bilateral breast intervention device. Background Technology

[0002] Magnetic resonance imaging (MRI) can effectively detect breast diseases in clinical practice and accurately distinguish between benign and malignant lesions through biopsy and pathological examination. Compared with interventional diagnostic and treatment techniques based on X-ray, ultrasound, and CT medical imaging equipment, MRI has higher sensitivity for breast cancer, excellent resolution and soft tissue contrast, and does not expose patients to harmful ionizing radiation.

[0003] MRI-guided breast interventional surgery is currently mainly performed using a dedicated open interventional device within a magnetic resonance imaging (MRI) system. Typically, the patient lies prone on the device, with the breast tissue fixed by a splint. After MRI scanning to determine the lesion location, minimally invasive medical instruments such as puncture needles, biopsy needles, or ablation needles are used through the outside of the open device to perform the surgery. However, clinical practice has shown that in most cases, the lesion is located only in one breast, but due to the limitations of the interventional device, the needle can only be inserted from a single open side. This is especially true for lesions located near the center of the chest, where it is almost necessary to pierce through the entire breast tissue to reach the target lesion. An excessively long puncture path can lead to additional damage and bleeding, which obviously increases the risk of complications beyond the surgery. Furthermore, the breast is soft tissue, and although fixed by a splint, a long puncture path can cause deviation from the intended position, significantly reducing the accuracy of the puncture. Based on these practical clinical problems, this patent proposes a novel MRI-guided breast interventional device that allows for bilateral intervention in unilateral breast cases. Utility Model Content

[0004] The purpose of this invention is to provide a novel magnetic resonance-guided bilateral breast intervention device to solve the above-mentioned problems.

[0005] This utility model can be achieved through the following technical solution: a novel magnetic resonance-guided bilateral breast intervention device, including a base plate placed on a magnetic resonance examination table, a coil chamber support fixed on the top of the base plate, and a chest support fixedly installed on the top of the coil chamber support. The chest support has a coil compartment and a shallow groove corresponding to the breast tissue on both sides. The coil compartment is used to accommodate breast tissue with lesions, forming an open space; the shallow groove is used to accommodate normal breast tissue, and the depth of the groove is limited to preserve the puncture path.

[0006] A further technical improvement of this utility model is that: a pair of fixed clamps are provided in the open space, namely an inner fixed clamp and an adjustable clamp. The inner fixed clamp is fixed in the middle of the coil compartment bracket or integrally formed, and the distance between the adjustable clamp and the inner fixed clamp is adjustable.

[0007] A further technical improvement of this utility model is that: the adjustable clamp is provided with perforated plates on both sides, the perforated plates are fixed or integrally formed with the coil compartment bracket, the adjustable clamp is slidably connected to it through a horizontal sliding groove opened on the perforated plate, and a fixing strip is provided on the outer side of the perforated plate for fixing the position of the adjustable clamp.

[0008] A further technical improvement of this utility model is that: multiple protrusions are provided on one side of the fixing strip. When fixing the adjustable clamp, the protrusions of the fixing strip are matched with the holes of the perforated plate, and copper screws are used to fix the fixing strip and the adjustable clamp together.

[0009] A further technical improvement of this utility model is that: multiple grids are provided on both fixed clamps. When inserting the needle, the needle guide is installed on the grid corresponding to the lesion position on any fixed clamp, and the size of the needle guide matches the size of the grid.

[0010] A further technical improvement of this utility model is that: the adjustable clamp is provided with three reference points that are not on the same straight line. The three reference points determine a plane for lesion projection, thereby obtaining the lesion projection coordinates, and then determining the needle insertion position on the needle guide.

[0011] A further technical improvement of this invention is that a hollow cylinder filled with a phantom solution is provided at each reference point for development. The number of hollow cylinders at the three reference point positions can be set to 1, 3, and 4 respectively, in order to improve the accuracy when selecting the reference point position by mouse.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention features an asymmetrically designed chest support structure with an open coil compartment and a shallow groove of controllable depth, allowing for needle insertion from both sides of the breast tissue. The shallow groove preserves the normal puncture path on the breast side, enabling lesions close to the chest wall to be directly punctured via a short path, reducing tissue damage. On the other hand, the adjustable splint is locked in a multi-stage manner through the cooperation of slide rails, perforated plates, and fixing strips, adapting to different breast sizes and stabilizing the tissue to prevent puncture deviation. Attached Figure Description

[0013] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a three-dimensional structural diagram of the bilateral intervention device of this utility model; Figure 2 This is a schematic diagram of the puncture procedure for the bilateral interventional device of this utility model; Figure 3This is a schematic diagram showing the setting state of the reference point on the open side of the bilateral intervention device of this utility model.

[0015] In the diagram: 1. Chest support; 2. Coil compartment bracket; 3. Base plate; 4. Fixing strip; 5. Adjustable clamp; 6. Puncture needle; 7. Needle guide; 8. Hole plate; 9. Copper screw; 10. Shallow groove; 11. Reference point. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] Please see Figure 1-3 As shown, a novel magnetic resonance-guided bilateral breast intervention device includes a base plate 3 placed on an MRI system examination table, a coil chamber support 2 installed at the top center of the base plate 3, six legs of the coil chamber support 2 distributed on the base plate 3, and a chest support 1 fixed to the top of the coil chamber support 2. The chest support 1 has a coil compartment and a shallow groove on the part corresponding to the two breast tissue positions. During the operation, the patient lies face down on the chest support 1. The breast tissue with lesions is placed in the coil compartment to form an open space, and the normal tissue is placed in the shallow groove 10. Due to the soft tissue characteristics of the breast, it can be bound in it. Since the depth of the shallow groove is limited, it will not affect the puncture path from that side. A magnetic resonance imaging coil is integrated in the coil compartment support 2 in the area of ​​the breast tissue with lesions. It is used to perform magnetic resonance imaging on the breast tissue during surgery to identify the location of the target lesion. In the open space, a pair of fixation clips are set on the coil compartment support 2. The fixation clip located on the inner side is fixed to the middle of the coil compartment support 2 or is designed as a whole. The fixation clip located on the outer side is marked as an adjustable clip 5. The distance between the adjustable clip 5 and the inner fixation clip can be adjusted to adjust according to different sizes of breast tissue so as to fix the breast tissue as firmly as possible. The top of the substrate 3 is symmetrically provided with perforated plates 8. The perforated plates 8 are fixed to the side of the coil compartment bracket 2 or are designed as an integral part of the coil compartment bracket 2. The two perforated plates 8 are provided with horizontal sliding grooves on their opposite side walls. The adjustable clamp 5 can be moved by using the horizontal sliding grooves. After the position of the adjustable clamp 5 is determined, the protruding end of the fixing strip 4 is locked in the corresponding hole, and the copper screw 9 is passed through the fixing strip 4 so that the threaded end of the copper screw 9 is threadedly connected to the side of the adjustable clamp 5, thereby fixing the adjustable clamp 5.

[0018] More specifically, the two fixation plates are equipped with multiple grids, allowing for needle insertion and intervention based on the grid corresponding to the vertical projection position of the lesion on the plane of the fixation plate. The lesion location is determined by selecting the side of the two fixation plates closer to the lesion location, through which the puncture needle 6 and needle guide 7 are positioned for puncture. The size of the needle guide 7 matches the grid size on the fixation plate. The needle guide 7 can be selected in different sizes such as 2×2, 3×3, and 4×4 depending on the location of the lesion and the size of the instrument, so as to perform the surgical operation more accurately. The puncture needle 6 passes through the needle guide 7 and is inserted into the lesion location.

[0019] Three reference points 11, which are not on the same straight line, are set on the adjustable clamp 5. The three reference points define a plane, and the coordinates of the lesion projected on the plane can be calculated, thereby locating the corresponding grid position and determining the needle insertion position on the needle guide 7. The number of hollow cylinders at the three reference point positions can be set to 1, 3 and 4 respectively, in order to improve the accuracy of selecting the reference point position by mouse, because under the reference of the relative position relationship of multiple cylinder contours, the position selected by visual clicking will be closer to its center.

[0020] In use, the patient lies prone on the chest support 1, with the breast tissue containing the lesion placed inside the coil compartment. Then, the adjustable splint 5 is moved to cooperate with the fixed splint on the other side to fix the breast tissue. The position of the adjustable splint 5 is fixed using the fixing clip 4 and copper screws 9. After determining the location of the lesion, if the lesion is located on the inner side of the tissue near the chest, the needle guide 7 is placed in the corresponding grid of the inner fixed splint, and the puncture needle 6 is operated to pass through the corresponding hole on the needle guide 7 to perform the puncture operation.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A novel magnetic resonance-guided bilateral breast intervention device, characterized in that: Includes a substrate (3) placed on a magnetic resonance examination table, a coil chamber bracket (2) fixed to the top of the substrate (3), and a chest support (1) fixedly installed on the top of the coil chamber bracket (2). The chest support (1) is provided with a coil compartment and a shallow groove (10) corresponding to the breast tissue on both sides. The coil compartment is used to accommodate breast tissue with lesions and form an open space. A shallow groove (10) is used to accommodate normal breast tissue, and the groove depth is limited to preserve the puncture path; The open space is provided with a pair of fixed clamps, namely an inner fixed clamp and an adjustable clamp (5). The inner fixed clamp is fixed in the middle of the coil compartment bracket (2) or integrally formed. The distance between the adjustable clamp (5) and the inner fixed clamp is adjustable. The adjustable clamp (5) is provided with perforated plates (8) on both sides. The perforated plates (8) are fixed or integrally formed with the coil compartment bracket (2). The adjustable clamp (5) is slidably connected to the perforated plate (8) through the horizontal sliding groove opened on the perforated plate (8). The outer side of the perforated plate (8) is provided with a fixing strip (4) for fixing the position of the adjustable clamp (5). The fixing strip (4) has multiple protrusions on one side. When fixing the adjustable clamp (5), the protrusions of the fixing strip (4) are matched with the holes of the perforated plate (8), and the fixing strip (4) and the adjustable clamp (5) are fixed together with copper screws (9).

2. The novel magnetic resonance-guided bilateral breast intervention device according to claim 1, characterized in that, Both of the fixed clamps are provided with multiple grids. When inserting the needle, the needle guide (7) is installed on the grid corresponding to the lesion position on any fixed clamp. The size of the needle guide (7) matches the size of the grid.

3. The novel magnetic resonance-guided bilateral breast intervention device according to claim 1, characterized in that, The adjustable clamp (5) is provided with three reference points (11) that are not on the same straight line. The three reference points determine a plane for lesion projection, thereby obtaining the lesion projection coordinates and determining the needle insertion position on the needle guide (7).

4. A novel magnetic resonance-guided bilateral breast intervention device according to claim 3, characterized in that, A hollow cylinder filled with a phantom solution is provided at each of the reference points for development. The number of hollow cylinders at the three reference points can be set to 1, 3, and 4, respectively.

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