Focus phase correction auxiliary system for MRI-HIFU

Abstract

The utility model relates to a focus phase correction auxiliary system for MRI-HIFU. The focus phase correction auxiliary system comprises a containing mechanism, a lifting mechanism and an ultrasonic probe. The containing mechanism is filled with an ultrasonic coupling agent. The lifting mechanism is arranged in the accommodating mechanism and is used for adjusting the vertical distance of the experimental body film relative to the ultrasonic probe; and the ultrasonic probe is arranged at the bottom of the lifting mechanism. Compared with the prior art, the ultrasonic probe system and the lifting mechanism are used as core components, and the experimental body film is driven to move through the lifting mechanism, so that the focus test range of the ultrasonic probe is enlarged, phase correction at different focus positions is realized, and the optimal focusing effect at different focus points can be ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices and relates to a focus phase correction auxiliary system for MRI - HIFU. Background Technique

[0002] Magnetic resonance-guided high-intensity focused ultrasound (MRgHIFU) technology can focus ultrasonic energy on human tissues, causing them to rapidly heat up within a short period (3 - 10 s), thereby necrosis of the tissue target and achieving the purpose of thermal ablation. With the rapid development of magnetic resonance real-time monitoring and real-time temperature measurement technologies, the MRgHIFU technology has attracted much attention from clinicians. As the medical community increasingly recognizes the great value of magnetic resonance-guided high-intensity focused ultrasound (MRgHIFU) technology in the treatment process, the application of this technology in the medical field is expanding rapidly. Especially in the treatment of diseases such as breast fibroadenoma, uterine fibroids, adenomyosis, prostate tumors, and intracranial tumors, the MRgHIFU technology has demonstrated its broad application potential and has become an innovative and effective treatment method that has received extensive attention. In addition, this technology has also shown significant advantages in improving the curative effect, shortening the recovery time, and reducing side effects, further promoting its application in the medical field.

[0003] However, in the experimental process of the existing treatment technology for breast fibroadenoma, there is a lack of a focus phase correction auxiliary system for the ultrasonic probe. When the ultrasonic probe needs to perform phase correction at different focus positions, it is necessary to adjust the position of the experimental body membrane at the same time. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a focus phase correction auxiliary system for MRI - HIFU to solve at least one of the above problems, so as to solve the problem that in the experiment of the MRgHIFU technology in the treatment of breast fibroadenoma, the phase correction of the ultrasonic probe at different focus positions and the position adjustment of the experimental body membrane cannot be achieved simultaneously, and to achieve a better focusing effect at the focal point of the ultrasonic probe.

[0005] The purpose of the utility model can be realized through the following technical solutions:

[0006] The utility model discloses a focus phase correction auxiliary system for MRI - HIFU, including a housing mechanism, a lifting mechanism, and an ultrasonic probe;

[0007] The housing mechanism is filled with ultrasonic coupling agent inside;

[0008] The lifting mechanism is arranged inside the housing mechanism and is used to adjust the vertical distance between the experimental body membrane and the ultrasonic probe;

[0009] The ultrasonic probe is arranged at the bottom of the lifting mechanism.

[0010] The lifting mechanism drives the movement of the experimental body film, thereby increasing the focal test range of the ultrasonic probe and realizing phase correction at different focal positions.

[0011] Preferably, the accommodating mechanism includes a box body and paraffin oil filled in the box body.

[0012] As an ultrasonic coupling agent, paraffin oil can ensure the effective transmission of ultrasonic signals. At the same time, other types of medical ultrasonic coupling agents such as gel-based coupling agents and water-based coupling agents can also be selected for the present utility model.

[0013] Preferably, the lifting mechanism includes a lifting frame, a carrier frame and a fixing component;

[0014] The carrier frame is used to carry the experimental body film and can be vertically slidably arranged on the lifting frame;

[0015] The fixing component is used to fix the carrier frame on the lifting frame.

[0016] The vertical position of the carrier frame is adjusted by the lifting frame, so as to adjust the vertical distance between the experimental body film and the ultrasonic probe, and then it is fixed by the fixing component to ensure the flexibility and stability of the experiment.

[0017] At the same time, the design of the lifting mechanism also fully improves the space utilization rate and ensures that there is enough space for the carrier inside. In addition, the present utility model can also meet the requirements of various experimental tests.

[0018] Preferably, the lifting frame includes a vertically arranged guide rail, the carrier frame can be vertically slidably arranged on the guide rail, and a vertical scale is arranged on the guide rail.

[0019] The moving direction of the carrier frame is restricted by the guide rail, and the vertical distance between the experimental body film and the ultrasonic probe can be quickly determined by the vertical scale, which has the advantages of fast, accurate and convenient operation.

[0020] Preferably, the carrier frame includes a sliding disk and a fixing bracket;

[0021] The sliding disk is slidably connected with the lifting frame;

[0022] The fixing bracket is connected with the sliding disk and is used to carry the experimental body film.

[0023] It is easy to load and unload the experimental body film by the fixing bracket, which is convenient for experimental tests.

[0024] Preferably, the fixing component includes a positioning part and a positioning cooperation part,

[0025] The positioning cooperation part is fixedly connected with the carrier frame,

[0026] The positioning member is screwed to the positioning mating member and can abut against the lifting frame when screwed along the thread, so as to limit and fix the sliding disc on the lifting frame.

[0027] Further preferably, the positioning member is a fixing screw, and the positioning mating member is a positioning nut;

[0028] The positioning nut is fixedly connected to the sliding disc;

[0029] The fixing screw is screwed onto the positioning nut and passes through the positioning nut to abut against the lifting frame, so as to limit and fix the sliding disc on the lifting frame.

[0030] Preferably, the lifting mechanism further includes a cover plate and a bottom plate provided at both ends of the guide rail.

[0031] Preferably, the lifting mechanism further includes a positioning ring, and the positioning ring is coaxially arranged with the ultrasonic probe.

[0032] Further preferably, the positioning ring includes a first positioning ring and a second positioning ring;

[0033] The first positioning ring and the second positioning ring are coaxially arranged with one outside and the other inside.

[0034] The redundant design of the inner and outer positioning rings can help doctors more quickly determine and adjust the probe position under image guidance, improving the reliability, usability and safety of the system.

[0035] Preferably, the ultrasonic probe includes a transducer disc and a phase controller;

[0036] The transducer disc is used to generate ultrasonic waves, and the phase controller is used to control the phase distribution of the ultrasonic waves.

[0037] Preferably, the system further includes a positioning device for image capture to help doctors quickly determine and adjust the probe position under image guidance.

[0038] Preferably, the present utility model is made of non-magnetic or weakly magnetic materials to reduce interference during magnetic resonance imaging, so as to meet the requirement of normal operation in a magnetic resonance environment. For example, non-magnetic materials such as acrylic plates, carbon fiber plates, and polyoxymethylene can be used to make the system structure and optimize its structural design to reduce the influence of the magnetic field.

[0039] Compared with the prior art, the present utility model has the following beneficial effects:

[0040] The present utility model provides a focus phase correction assistance system for MRI-HIFU. This system consists of an ultrasonic probe system and a lifting mechanism as core components. The lifting mechanism drives the movement of the experimental body film, thereby increasing the focus test range of the ultrasonic probe and achieving phase correction at different focus positions to ensure the best focusing effect at different focal points. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of one perspective of the focus phase correction assistance system;

[0042] Figure 2 It is a schematic structural diagram of another perspective of the focus phase correction assistance system;

[0043] Figure 3 It is a vertical sectional view of one perspective of the focus phase correction assistance system;

[0044] Figure 4 It is a vertical sectional view of another perspective of the focus phase correction assistance system;

[0045] Description of the markings in the figures:

[0046] 1000 - Lifting mechanism;

[0047] 1100 - Lifting frame; 1101 - Cover plate; 1102 - Bottom plate; 1103 - Guide rail; 1104 - Positioning and mating part; 1105 - Positioning part; 1200 - Carrying rack; 1201 - Sliding disk; 1202 - Fixed bracket; 1203 - Experimental body film;

[0048] 2000 - Ultrasonic probe;

[0049] 2100 - Transducer; 2101 - Transducer disk; 2102 - Phase controller; 2103 - Outer shell; 2200 - Positioning ring; 2201 - Small positioning ring; 2202 - Large positioning ring;

[0050] 3000 - Accommodating system;

[0051] 3001 - Box body; 3002 - Paraffin oil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are implemented on the premise of the above technical solutions of the present utility model, and detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments.

[0053] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] The following will, with reference to the accompanying drawings, elaborate on some embodiments of the present utility model. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0055] Embodiment:

[0056] A focus phase correction assistance system for MRI - HIFU, as Figures 1 to 4 shown, is used to achieve phase correction of the ultrasonic probe 2000 at different focus positions and position adjustment of the experimental body membrane 1203, and includes a housing mechanism 3000, a lifting mechanism 1000, and an ultrasonic probe 2000;

[0057] Among them,

[0058] Figure 1 and Figure 2 show the overall structure of the measurement system. Specifically: The housing mechanism 3000 is filled with ultrasonic coupling agent inside; the lifting mechanism 1000 is arranged inside the housing mechanism 3000 and is used to adjust the vertical distance between the experimental body membrane 1203 and the ultrasonic probe 2000; the ultrasonic probe 2000 is arranged at the bottom of the lifting mechanism. By driving the experimental body membrane to move through the lifting mechanism, the focus test range of the ultrasonic probe is increased, and phase correction at different focus positions is achieved.

[0059] As Figure 4 shown, the main body of the housing mechanism 3000 is composed of a box body 3101 and paraffin oil 3102. Paraffin oil 3102, as an ultrasonic coupling agent, is filled in the box body 3101, which can ensure the effective propagation of ultrasonic signals. During the process of the ultrasonic probe 2000 effectively transmitting ultrasonic energy to the measured material, it plays roles of insulation, cooling, and coupling, and can also help the probe reduce vibration, improve the stability and clarity of the signal, and is helpful in reducing distortion and attenuation of ultrasonic waves during the transmission process in terms of acoustic characteristics. The experimental body membrane 1203, the housing mechanism 3000, the lifting mechanism 1000, and the ultrasonic probe 2000 are all immersed in paraffin oil 3102. At the same time, in this embodiment, other types of medical ultrasonic coupling agents that are beneficial to ultrasonic wave transmission, such as gel - based coupling agents and water - based coupling agents, can also be selected.

[0060] As Figure 3 and Figure 4As shown, the main body of the lifting mechanism 1000 is composed of a lifting frame 1100, a load-carrying frame 1200, and a fixing component. The load-carrying frame 1200 is vertically slidably arranged on the lifting frame 1100; the fixing component is used to fix the load-carrying frame 1200 to the lifting frame 1100. The vertical position of the load-carrying frame 1200 is adjusted by the lifting frame 1100, so as to adjust the vertical distance between the experimental body film 1203 and the ultrasonic probe 2000, and then it is fixed by the fixing component to ensure the flexibility and stability of the experiment. Specifically, the lifting frame 1100 is in a cylindrical frame structure, including a cover plate 1101, a bottom plate 1102, and guide rails 1103. The cover plate 1101 and the bottom plate 1102 are arranged side by side, one above the other. The guide rails 1103 are in a columnar structure, with 8 of them and evenly erected between the cover plate 1101 and the bottom plate 1102. Vertical scales are provided on the guide rails 1103, and both ends of the guide rails 1103 are fixed to the cover plate 1101 and the bottom plate 1102 respectively, and the fixing methods can adopt interference plug-in fit, threaded connection, etc. The load-carrying frame 1200 includes a sliding disk 1201 and a fixing bracket 1202; the sliding disk 1201 is in a ring structure, and 8 sliding through holes are opened at the outer edge. The guide rails 1103 pass through the corresponding sliding through holes, and the sliding disk 1201 is slidably connected to the lifting frame 1100. A fixing bracket 1202 is installed at the inner edge of the sliding disk 1201, and the fixing bracket 1202 is also in a ring structure. The outer edge of the experimental body film 1203 is installed on the fixing bracket 1202, and the central convex part at the center passes through the central opening in the fixing bracket 1202 and points to the ultrasonic probe 2000 located at the bottom. The fixing component includes a positioning part 1105 and a positioning and cooperating part 1104. The positioning and cooperating part 1104 is fixedly connected to the load-carrying frame 1200. The positioning part 1105 is screwed to the positioning and cooperating part 1104, and when it is screwed in along the thread, it can abut against the lifting frame 1100 to limit and fix the sliding disk 1201 on the lifting frame 1100. More specifically, the positioning part 1105 is a fixing screw, and the positioning and cooperating part 1104 is a positioning nut; the positioning nut is fixedly connected to the sliding disk 1201; the fixing screw is screwed onto the positioning nut and passes through the positioning nut to abut against the lifting frame 1100 to limit and fix the sliding disk 1201 on the lifting frame 1100. The sliding movement of the sliding disk 1201 along the guide rails 1103 is realized through the sliding through holes and the guide rails 1103, so as to facilitate the adjustment of the vertical distance between the experimental body film 1203 and the ultrasonic probe 2000 through the sliding disk 1201 and the fixing bracket 1202 in sequence, and determine the vertical distance according to the vertical scale on the guide rails 1103.

[0061] As Figure 4As shown in the figure, the lifting mechanism 1000 further includes a positioning ring 2200, and the positioning ring 2200 further includes a first positioning ring 2201 and a second positioning ring 2202; the first positioning ring 2201 and the second positioning ring 2202 are coaxially arranged with the ultrasonic probe 2000, one outside and one inside. The redundant design of the inner and outer positioning rings can help doctors more quickly determine and adjust the position of the probe under image guidance, improving the reliability, usability, and safety of the system.

[0062] As Figure 4 shown in the figure, a mounting hole is provided in the middle of the bottom plate 1102, and the ultrasonic probe 2000 is arranged at the mounting hole. Specifically, the ultrasonic probe 2000 includes a transducer disk 2101, a phase controller 2102, and a housing 2103. The transducer disk 2101 is used to generate ultrasonic waves, is arranged at the mounting hole, and its outer edge is fixedly connected to the bottom plate 1102. The connection method can adopt a bolt and nut connection structure, etc.; the housing 2103 covers the transducer disk 2101 from the bottom; the phase controller 2102 is used to control the phase distribution of ultrasonic waves and is arranged between the transducer disk 2101 and the housing 2103. Further, this embodiment may also include a positioning device for image capture to help doctors quickly determine and adjust the position of the probe under image guidance.

[0063] This embodiment is made of non-magnetic or weakly magnetic materials. For example, non-magnetic materials such as acrylic plates, carbon fiber plates, and polyoxymethylene are used to make the cover plate 1101, the bottom plate 1102, and the guide rail 1103, the sliding disk 1201 and the fixed bracket 1202, the first positioning ring 2201 and the second positioning ring 2202, the housing 2103 and other system structures to reduce interference during magnetic resonance imaging to meet the requirements of normal operation in a magnetic resonance environment. For example, its structural design can be optimized to reduce the influence of the magnetic field.

[0064] In summary, the system can increase the focal test range of the ultrasonic probe, achieve phase correction at different focal positions, expand the application of MRI-HIFU technology in breast diseases, especially in the treatment experiments of breast fibroadenomas, and can achieve more precise and efficient treatment, thus bringing a better treatment experience and effect to patients. By using non-magnetic or weakly magnetic materials for manufacturing, the interference during magnetic resonance imaging is reduced. At the same time, the design of the lifting mechanism fully considers space utilization, ensuring sufficient carrier placement space inside to meet the needs of various experimental tests.

[0065] In short, the purpose of the present utility model is to design a focal phase correction assistance system to address the many challenges faced by magnetic resonance-guided HIFU technology in the treatment of breast fibroadenomas. By overcoming these technical difficulties, the present utility model will bring a safer, more efficient, and more reliable treatment option for patients and contribute to the field of modern medicine.

[0066] The above description of the embodiments is to enable those of ordinary skill in the art to understand and use the utility model. Obviously, those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the utility model is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the utility model according to the disclosure of the utility model should be within the protection scope of the utility model.

Claims

1. A focus phase correction assist system for MRI-HIFU, characterized in that, It includes a housing mechanism (3000), a lifting mechanism (1000), and an ultrasonic probe (2000); The housing mechanism (3000) is filled with an ultrasonic coupling agent inside; The lifting mechanism (1000) is arranged inside the housing mechanism (3000) and is used to adjust the vertical distance between the experimental body film (1203) and the ultrasonic probe (2000); The ultrasonic probe (2000) is arranged at the bottom of the lifting mechanism.

2. The focus phase correction assistance system for MRI-HIFU according to claim 1, characterized in that The housing mechanism (3000) includes a box body (3101) and paraffin oil (3102) filled inside the box body (3101).

3. The focal phase correction assistance system for MRI-HIFU according to claim 1, wherein The lifting mechanism (1000) includes a lifting frame (1100), a carrier frame (1200), and a fixing component; The carrier frame (1200) is used to carry the experimental body film (1203) and is vertically slidably arranged on the lifting frame (1100); The fixing component is used to fix the carrier frame (1200) on the lifting frame (1100).

4. The focus phase correction assistance system for MRI-HIFU according to claim 3, wherein The lifting frame (1100) includes a vertically arranged guide rail (1103), the carrier frame (1200) is vertically slidably arranged on the guide rail (1103), and a vertical scale is arranged on the guide rail (1103).

5. The focus phase correction auxiliary system for MRI-HIFU according to claim 3, characterized in that, The carrier frame (1200) includes a sliding disk (1201) and a fixing bracket (1202); The sliding disk (1201) is slidably connected with the lifting frame (1100); The fixing bracket (1202) is connected with the sliding disk (1201) and is used to carry the experimental body film (1203).

6. The focal phase correction assistance system for MRI-HIFU according to claim 3, wherein, The fixing component includes a positioning part (1105) and a positioning mating part (1104), The positioning mating part (1104) is fixedly connected with the carrier frame (1200), The positioning part (1105) is screwed with the positioning mating part (1104) and can abut against the lifting frame (1100) when screwed in along the thread to limit and fix the sliding disk (1201) on the lifting frame (1100).

7. The focus phase correction assistance system for MRI-HIFU according to claim 3, wherein, The lifting mechanism (1000) further includes a cover plate (1101) and a bottom plate (1102) arranged at both ends of the guide rail (1103).

8. The focus phase correction assistance system for MRI-HIFU according to claim 7, wherein, The lifting mechanism (1000) further includes a positioning ring, and the positioning ring is coaxially arranged with the ultrasonic probe (2000).

9. The focus phase correction assistance system for MRI-HIFU according to claim 8, characterized in that, The positioning ring includes a first positioning ring (2201) and a second positioning ring (2202); The first positioning ring (2201) and the second positioning ring (2202) are coaxially arranged with one outside and the other inside.

10. The focus phase correction assistance system for MRI-HIFU according to claim 1, wherein, The ultrasonic probe (2000) includes a transducer disk (2101) and a phase controller (2102); The transducer disk (2101) is used to generate ultrasonic waves, and the phase controller (2102) is used to control the phase distribution of the ultrasonic waves.

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