Water bag structure used for MRI-phifu and treatment system constituted with same

Abstract

A water bag structure used for MRI-PHIFU and a treatment system constituted with same. The water bag structure comprises a water bag water-containing cavity (11), a water inlet (12), a water outlet (13), an external connection unit (14) and a retractable unit (15), the water bag water-containing cavity (11) being connected to the external connection unit (14) by means of the retractable unit (15), and the water bag water-containing cavity (11) being provided with the water inlet (12) and the water outlet (13). The treatment system comprises the water bag structure, a mammary gland ultrasound probe (2), a mammary gland support (3), a mammary gland coil (4) and a manipulator (5). Compared with the prior art, the treatment system can solve the problem of probes being unable to move in water bags in the prior art, and further achieves water cooling circulation during treatment processes.

Description

A water bag structure for MRI-PHIFU and a treatment system composed thereof Technical Field

[0001] The present invention relates to the technical field of MRI-PHIFU, and in particular to a water bag structure for MRI-PHIFU and a treatment system composed thereof. Background Art

[0002] Magnetic resonance imaging-guided phased high-intensity focused ultrasound (MRI-PHIFU) technology utilizes the thermal effect of ultrasound, combined with MRI's real-time temperature measurement and positioning technology, to deliver energy to the target site outside the human body for noninvasive treatment. The MRI-PHIFU system works as follows: MRI scans provide PHIFU with target location and imaging information. The physician identifies the target site using the imaging information and transmits information about the area to be ablated to the PHIFU system. The PHIFU system then performs path planning and gradually ablates the target area through the movement of a manipulator. Breast fibroadenomas are common benign tumors associated with estrogen stimulation. While generally, fibroadenomas do not require specific treatment due to their less than 1% risk of developing cancer, if factors such as hormonal changes and pregnancy cause the adenoma to grow or interfere with the patient's daily life, treatment may be necessary. Because phased high-intensity focused ultrasound technology offers a simple, side-effect-free treatment process, allows for multiple treatments, and is non-invasive, MRI-PHIFU offers significant feasibility and potential for treating breast fibroadenomas.

[0003] However, due to the intimate location and complex treatment positions, data retrieval indicates that no FDA-approved water capsule products for MRI-PHIFU treatment of breast fibroadenomas have been released to date. Therefore, the successful design of a breast-specific water capsule that provides a defined range of motion for the probe and ensures water circulation during treatment is of great clinical significance for the advancement of the therapeutic ultrasound industry in the treatment of breast diseases.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to provide a water bag structure for MRI-PHIFU and a treatment system composed of the same, so as to solve the problem in the prior art that the probe cannot move in the water bag, and at the same time realize water cooling circulation during the treatment process.

[0006] The object of the present invention can be achieved by the following technical solution: A water bag structure for MRI-PHIFU, comprising a water bag water receiving cavity, a water inlet, a water outlet, an external connection unit and a telescopic unit;

[0007] The water bag water receiving chamber is connected to the external connection unit through a telescopic unit, and the water bag water receiving chamber is provided with a water inlet and a water outlet.

[0008] Preferably, the telescopic unit is a variable diameter telescopic tube, the large diameter end of which is connected to the water receiving cavity of the water bag, and the small diameter end of which is connected to the external connection unit.

[0009] The present invention can provide a certain range of motion for the breast ultrasound probe by setting a telescopic unit between the water bag water receiving cavity and the external connection unit. According to the requirements of the ultrasound probe's range of motion, the telescopic unit can be designed to have multiple telescopic ranges.

[0010] Preferably, the water bag structure further includes a fixing unit and a positioning unit;

[0011] The fixing unit is arranged on the outer edge of the top of the water bag water receiving chamber, and the positioning unit is arranged on the side wall of the top of the water bag water receiving chamber.

[0012] Preferably, the water inlet and the water outlet are provided on a wall surface of the water bag water receiving cavity away from the telescopic unit;

[0013] The water bag structure includes: a water inlet pipe joint and a water outlet pipe joint;

[0014] The water inlet is connected to the water inlet pipe joint, and the water outlet is connected to the water outlet pipe joint.

[0015] Further preferably, the water inlet is bonded to the water inlet pipe joint, and the water outlet is bonded to the water outlet pipe joint.

[0016] More preferably, the water inlet and the water inlet pipe joint, as well as the water outlet and the water outlet pipe joint, are bonded together by using silicone quick-drying glue.

[0017] The present invention utilizes the design of water inlets and outlets on the water bladder's water chamber to enable water cooling circulation during breast fibroadenoma treatment. By placing the telescopic unit and water inlets and outlets on either side of the water bladder's water chamber, interference between the breast ultrasound probe and the water inlet and outlet pipes can be avoided. Depending on the probe aperture requirements of the MRI-PHIFU system, water bladder outlets of various diameters can be used.

[0018] A treatment system comprising the above-mentioned water bag structure, a breast ultrasound probe, a breast stent and a breast coil;

[0019] The water bag structure is fixed on the breast coil through a breast bracket, and the external connection unit is connected to the outer wall of the breast ultrasound probe.

[0020] Preferably, the external connection unit is connected to the outer wall of the breast ultrasound probe through silica gel.

[0021] Preferably, the fixing unit of the water bag structure is clamped between the breast coil and the breast support.

[0022] The present invention adopts the design of the fixing unit, and fixes the water bag structure by clamping the fixing unit through the breast support and the breast coil. The structure is simple, the operation is convenient, and no fixing parts such as screws are required, and the fixing effect is good.

[0023] Preferably, the treatment system further comprises a manipulator connected to a breast ultrasound probe.

[0024] Further preferably, the manipulator includes a first speed change mechanism, a translation mechanism, a rotation axis clamping mechanism and a second speed change mechanism;

[0025] The first speed changing mechanism is connected to the translation mechanism, the output end of the first speed changing mechanism is connected to the second speed changing mechanism through a rotating shaft clamping mechanism, and the output end of the second speed changing mechanism is connected to a breast ultrasound probe.

[0026] More preferably, the translation mechanism includes a transmission screw and a guide rail with a nut, the guide rail with a nut is arranged on the transmission screw, and the first speed change mechanism is arranged on the guide rail with a nut.

[0027] Preferably, the transmission screw is arranged in the Z direction, the output end of the first speed change mechanism is arranged in the X direction, and the output end of the second speed change mechanism is arranged in the Y direction.

[0028] Preferably, the materials used for the manipulator are all non-magnetic materials, the working process will not be affected by magnetic resonance, and the manipulator can work in a strong magnetic field.

[0029] Compared to existing technologies, this invention ensures the mobility of the breast ultrasound probe within the water bladder, resolving the existing issue of probe immobility within the water bladder during MRI-PHIFU treatment of breast fibroadenomas. This expands the treatable range of MRI-PHIFU systems and further enhances their ability to treat a wide range of breast diseases, including fibroadenomas. This invention also addresses the issue of water cooling during MRI-PHIFU treatment, significantly advancing the application of MRI-PHIFU technology in breast tumor treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the water bag structure of the present invention;

[0031] FIG2 is a second schematic diagram of the water bag structure of the present invention;

[0032] FIG3 is a schematic diagram of the structure of the water bag structure and the breast ultrasound probe of the present invention;

[0033] FIG4 is a schematic diagram showing the connection between the water bag structure and the breast ultrasound probe of the present invention;

[0034] FIG5 is a schematic diagram of the water inlet and outlet connections of the water bag structure of the present invention;

[0035] FIG6 is a schematic diagram of the fixing structure of the water bag of the present invention;

[0036] FIG7 is a partial enlarged view of FIG6;

[0037] FIG8 is an overall schematic diagram of the water bag structure of the present invention in a breast coil;

[0038] FIG9 is a schematic structural diagram of the treatment system of the present invention (with the water sac structure omitted);

[0039] FIG10 is a schematic structural diagram of the manipulator of the present invention;

[0040] In the figure: 1-water bag structure, 11-water bag water receiving chamber, 12-water inlet, 13-water outlet, 14-external connection unit, 15-telescopic unit, 16-fixed unit, 161-main wing, 162-side wing, 17-positioning unit, 18-water inlet pipe joint, 19-water outlet pipe joint, 2-breast ultrasound probe, 3-breast bracket, 31-bracket positioning platform, 4-breast coil, 41-positioning structure, 5-manipulator, 51-first speed changing mechanism, 511-first gearbox, 512-first gearbox output shaft, 513-first motor, 52-translational mechanism, 521-transmission screw, 522-guide rail with nut, 53-rotating axis clamping mechanism, 54-second speed changing mechanism, 541-second gearbox, 542-second gearbox output shaft, 543-second gearbox support, 544-second motor, 55-screw drive mechanism. DETAILED DESCRIPTION

[0041] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operating processes, but the protection scope of the present invention is not limited to the following embodiments.

[0042] Example 1

[0043] A water bag structure for MRI-PHIFU includes a water bag water receiving cavity 11, a water inlet 12, a water outlet 13, an external connection unit 14 and a telescopic unit 15.

[0044] Among them, one end of the water bag water chamber 11 is connected to the external connection unit 14 through the telescopic unit 15, and the external connection unit 14 can be connected to the breast ultrasound probe 2. The other end of the water bag water chamber 11 is provided with a water inlet 12 and a water outlet 13 for water in and out.

[0045] This embodiment provides a water bag structure for MRI-PHIFU, which ensures the mobility of the probe and solves the problem of water cooling circulation failure during treatment of breast fibroadenomas in the MRI-PHIFU system.

[0046] Example 2

[0047] A water bag structure for MRI-PHIFU, as shown in Figures 1 and 2, includes a water bag water chamber 11, a water inlet 12, a water outlet 13, an external connection unit 14, a telescopic unit 15, a fixing unit 16, and a positioning unit 17. The water bag water chamber 11 is connected to the external connection unit 14 via the telescopic unit 15. The water bag water chamber 11 is provided with the water inlet 12 and the water outlet 13. The fixing unit 16 is provided at the top outer edge of the water bag water chamber 11, and the positioning unit 17 is provided on the top sidewall of the water bag water chamber 11.

[0048] in:

[0049] The fixing unit 16 includes a main wing 161 and a side wing 162. The main wing 161 and the side wing 162 are used to fit with the breast coil 4 and cooperate with the breast support 3 to fix the water bag.

[0050] The positioning unit 17 is used to cooperate with the positioning structure 41 on the breast coil 4 for positioning;

[0051] The external connection unit 14 is used to connect to the breast ultrasound probe 2;

[0052] The telescopic unit 15 is used to extend forward, backward, left, and right, providing a certain range of motion for the ultrasonic breast probe 2;

[0053] The water outlet 13 is used to discharge the water in the water bag;

[0054] The water bag water cavity 11 is used to contain degassed water and provide a conductive medium for the ultrasonic wave generated by the ultrasonic breast probe 2;

[0055] The water inlet 12 is used to introduce cooling water into the water bag.

[0056] In this embodiment, the water bag structure is positioned by coordinating the positioning unit on the water bag structure with the positioning structure on the breast coil, thereby further improving the fixing effect of the water bag structure on the breast coil.

[0057] Example 3

[0058] A water bag structure for MRI-PHIFU is shown in FIG3 and FIG4 . In this embodiment, the external connection unit 14 is connected to the outer wall of the breast ultrasound probe 2 through silicone.

[0059] As shown in FIG5 , the water outlet 13 and the water outlet pipe joint 19 of this embodiment are connected by bonding, and the water inlet 12 and the water inlet pipe joint 18 are connected by bonding.

[0060] In this embodiment, the positioning unit 17 is a positioning platform provided on the top side wall of the water bag water receiving chamber 11 and protruding outward, and the positioning structure 41 is a positioning groove matching the positioning platform.

[0061] As shown in Figures 6, 7, and 8, the water bladder structure 1 of this embodiment is positioned by the cooperation of the positioning unit 17 on the water bladder structure 1 and the positioning structure 41 on the breast coil 4. The breast stent 3 then securely engages the positioning unit 17 with the positioning structure 41 via the stent positioning platform 31 on the stent 3, thereby securing the water bladder structure 1. The remaining steps are the same as those of Example 2.

[0062] Example 4

[0063] A treatment system includes a water bag structure 1, a breast ultrasound probe 2, a breast support 3, a breast coil 4, and a manipulator 5. As shown in FIG9 , the breast ultrasound probe 2 is connected to the manipulator 5.

[0064] The structure of the manipulator 5 is shown in Figure 10 and includes a first speed change mechanism 51, a translation mechanism 52, a rotary axis clamping mechanism 53, and a second speed change mechanism 54. The translation mechanism 52 includes a transmission screw 521 and a nut guide rail 522. The nut guide rail 522 is mounted on the transmission screw 521, which is arranged along the Z direction and is connected to a screw drive mechanism 55 for driving its rotation. When the transmission screw 521 rotates, it drives the nut guide rail 522 along the Z direction. The first speed change mechanism 51 is mounted on the nut guide rail 522 and includes a first gearbox 511, a first gearbox output shaft 512, and a first motor 513. The input end of the first gearbox 511 is connected to the first motor 513, and the output end is the first gearbox output shaft 512. The first gearbox output shaft 512 is arranged along the X direction and is connected to the second speed change mechanism 54 via the rotary axis clamping mechanism 53. The second speed change mechanism 54 includes a second gearbox 541, a second gearbox output shaft 542, a second gearbox support 543, and a second motor 544. The rotating shaft clamping mechanism 53 is connected to the second gearbox support 543. The second gearbox 541 is arranged on the second gearbox support 543. The input end of the second gearbox 541 is connected to the second motor 544, and the output end is the second gearbox output shaft 542. The second gearbox output shaft 542 is arranged along the Y direction and is connected to the breast ultrasound probe 2.

[0065] In this embodiment, the working principle of the manipulator is:

[0066] When the screw drive mechanism 55 drives the transmission screw 521 to rotate clockwise or counterclockwise, the nut guide rail 522 will move back and forth along the transmission screw 521. Since the breast ultrasound probe 2 is connected to the second speed change mechanism 54, and the second speed change mechanism 54 is connected to the first speed change mechanism 51, the first speed change mechanism 51 is set on the nut guide rail 522, thus realizing the back and forth movement of the probe.

[0067] When the first speed change mechanism 51 is running, it will drive the rotating shaft clamping mechanism 53 and the second gearbox support 543 to rotate. Since the breast ultrasound probe 2 is connected to the second gearbox 541, and the second gearbox 541 is set on the second gearbox support 543, the breast ultrasound probe 2 can rotate.

[0068] When the second speed change mechanism 54 is in operation, it drives the breast ultrasound probe 2 of the probe to swing.

[0069] The manipulator of this embodiment utilizes one translation and two rotations simultaneously, thereby expanding the motion range of the breast ultrasound probe 2 to the greatest extent.

[0070] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A water bag structure for MRI-PHIFU, characterized in that: It comprises a water bag water receiving cavity (11), a water inlet (12), a water outlet (13), an external connection unit (14) and a telescopic unit (15); The water bag water receiving chamber (11) is connected to the external connection unit (14) via the telescopic unit (15), and the water bag water receiving chamber (11) is provided with the water inlet (12) and the water outlet (13).

2. The water bag structure for MRI-PHIFU according to claim 1, characterized in that: The telescopic unit (15) is a variable diameter telescopic tube, the large diameter end of which is connected to the water bag water receiving chamber (11), and the small diameter end of which is connected to the external connection unit (14).

3. The water bag structure for MRI-PHIFU according to claim 1, characterized in that: It also includes a fixing unit (16) and a positioning unit (17); The fixing unit (16) is arranged on the outer edge of the top of the water bag water receiving chamber (11), and the positioning unit (17) is arranged on the side wall of the top of the water bag water receiving chamber (11).

4. The water bag structure for MRI-PHIFU according to claim 1, characterized in that: The water inlet (12) and the water outlet (13) are provided on a side wall of the water bag water receiving chamber (11) away from the telescopic unit (15); The water bag structure comprises: a water inlet pipe joint (18) and a water outlet pipe joint (19); The water inlet (12) is connected to the water inlet pipe joint (18), and the water outlet (13) is connected to the water outlet pipe joint (19).

5. A treatment system, characterized in that: It comprises the water bag structure according to any one of claims 1 to 4, a breast ultrasound probe (2), a breast support (3) and a breast coil (4); The water bag structure (1) is fixed to the breast coil (4) via the breast support (3), and the external connection unit (14) is connected to the outer wall of the breast ultrasound probe (2).

6. The treatment system according to claim 5, characterized in that The fixing unit (16) of the water bag structure (1) is clamped between the breast coil (4) and the breast support (3).

7. The treatment system according to claim 5, characterized in that It also comprises a manipulator (5), wherein the manipulator (5) is connected to the breast ultrasound probe (2).

8. The treatment system according to claim 7, characterized in that The manipulator (5) comprises a first speed change mechanism (51), a translation mechanism (52), a rotating shaft clamping mechanism (53) and a second speed change mechanism (54); The first speed change mechanism (51) is connected to the translation mechanism (52), the output end of the first speed change mechanism (51) is connected to the second speed change mechanism (54) via the rotating shaft clamping mechanism (53), and the output end of the second speed change mechanism (54) is connected to the breast ultrasound probe (2).

9. The treatment system according to claim 8, characterized in that The translation mechanism (52) comprises a transmission screw (521) and a guide rail with a nut (522); the guide rail with a nut (522) is arranged on the transmission screw (521); and the first speed change mechanism (51) is arranged on the guide rail with a nut (522).

10. The treatment system according to claim 9, characterized in that The transmission screw (521) is arranged in the Z direction, the output end of the first speed change mechanism (51) is arranged in the X direction, and the output end of the second speed change mechanism (54) is arranged in the Y direction.

Images