Head fixation device and magnetic resonance guided ultrasound therapy device

Abstract

The present invention relates to a head fixing device, comprising a fixed frame, a plurality of adjustment rods and a plurality of positioning pins. The fixed frame is annular, the hollow part of the fixed frame can accommodate the patient's head, and the fixed frame can be fixed on an ultrasonic treatment bed. A plurality of adjustment rods are respectively arranged on the fixed frame along the rotation direction of the fixed frame, and each adjustment rod is fixedly arranged on the fixed frame with an adjustable position along the patient's height direction. A plurality of positioning pins are respectively arranged on a plurality of adjustment rods, and each positioning pin is fixedly arranged on the adjustment rod with an adjustable position along the rotation radial direction of the fixed frame, and a plurality of positioning pins cooperate to fix the patient's head along the rotation radial direction of the fixed frame. The present invention also relates to a magnetic resonance-guided ultrasonic therapeutic apparatus comprising a head fixing device. Through a plurality of position-adjustable adjustment rods and positioning pins, adjustment along the patient's height direction and adjustment along the rotation radial direction of the fixed frame can be quickly realized, thereby improving the fixing efficiency of the patient's head.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a head fixing device and a magnetic resonance guided ultrasonic therapeutic apparatus. Background Art

[0002] Ultrasound therapy guided by magnetic resonance imaging is an important means of achieving non-invasive treatment. When using a magnetic resonance-guided ultrasound therapy device to treat a patient's head disease, the lesion on the patient's head is first determined by magnetic resonance imaging, and then ultrasound is used to perform targeted treatment on the lesion on the patient's head. In general, the lesion on the patient's head is small, and in order to ensure that the ultrasonic transducer can accurately focus on the lesion location on the patient's head based on magnetic resonance imaging, the patient's head needs to be completely fixed. Currently, the fixed structure used to fix the patient's head during surgery generally has the problem of cumbersome adjustment process, which increases the time consumption of fixing the patient's head, thereby prolonging the single treatment time of ultrasound therapy guided by magnetic resonance imaging. Summary of the invention

[0003] Based on this, it is necessary to provide a head fixation device and a magnetic resonance-guided ultrasonic therapy device that are easy to adjust and quickly fix the patient's head in order to address the problem that the head fixation structure is difficult to adjust during the current surgery.

[0004] A head fixing device, comprising:

[0005] A fixed frame, the fixed frame is annular, the hollow portion of the fixed frame can accommodate the patient's head, and the fixed frame can be fixed on the ultrasonic treatment bed;

[0006] A plurality of adjustment rods are respectively arranged on the fixed frame along the rotation direction of the fixed frame, and each of the adjustment rods is adjustable and fixed on the fixed frame along the patient's height direction;

[0007] A plurality of positioning pins are respectively arranged on the plurality of adjusting rods, each of the positioning pins is adjustably fixed on the adjusting rod along the rotational radial direction of the fixing frame, and the plurality of positioning pins cooperate to fix the patient's head along the rotational radial direction of the fixing frame.

[0008] In one embodiment, the fixed frame includes an adjustment frame and a support column; the adjustment frame is ring-shaped, and the hollow part of the adjustment frame can accommodate the patient's head. A plurality of adjustment rods are respectively arranged on the adjustment frame along the rotation direction of the adjustment frame, and each adjustment rod is adjustable and fixedly arranged on the adjustment frame along the direction of the patient's height; the support column can be fixed on the ultrasonic treatment bed, and the adjustment frame is adjustable and fixedly arranged on the support column along the direction of the patient's face.

[0009] In one embodiment, the fixing frame includes two supporting columns, and the two supporting columns respectively support the adjustment frame along the left and right sides of the patient's face.

[0010] In one of the embodiments, a positioning notch and a locking slot are provided on the support column. When the support column is fixed to the ultrasonic treatment bed, the positioning notch abuts against the positioning support structure on the ultrasonic treatment bed, and the locking slot is locked by the locking structure on the ultrasonic treatment bed.

[0011] In one of the embodiments, the fixing frame further includes a handle, and the handle is arranged at a position on the adjusting frame corresponding to the patient's face.

[0012] In one of the embodiments, a line connecting the positions where at least two of the adjusting rods are fixedly arranged on the fixed frame passes through the rotation center of the fixed frame.

[0013] In one embodiment, the head fixing device includes four adjustment rods, and the four adjustment rods are diagonally arranged on the fixing frame.

[0014] In one embodiment, the extension direction of the adjustment rod is parallel to the height direction of the patient, the adjustment rod has an adjustment strip hole along its own extension direction, the fixed frame has a fastening hole, and the fastening hole on the fixed frame is fixedly connected to any position of the strip hole on the adjustment rod through a fastener.

[0015] In one of the embodiments, the head fixing device further comprises a neck airbag, and the neck airbag is detachably arranged at a position on the fixing frame corresponding to the back of the patient's neck.

[0016] In one of the embodiments, the head fixing device further includes an air pressure regulating component, which is connected to the neck airbag, and the air pressure regulating component is used to control the air pressure in the neck airbag within a set range.

[0017] In one embodiment, the air pressure regulating assembly includes a connecting pipe, a pressure sensor, a three-way valve, a gas filter, a gas one-way valve and an air pump. The two ends of the connecting pipe are respectively connected to the neck airbag and the air pump. The air pump is used to fill air into the neck airbag. The gas one-way valve, the gas filter, the three-way valve and the pressure sensor are sequentially arranged in the middle part of the connecting pipe along the flow direction of the gas during inflation.

[0018] In one of the embodiments, the neck airbag has a mounting hole, and the mounting hole is penetrated through a position on the fixing frame corresponding to the back of the patient's neck; the position on the neck airbag that contacts the back of the patient's neck has a smooth arc-shaped protrusion, and the arc-shaped protrusion is adapted to the back of the patient's neck.

[0019] A magnetic resonance-guided ultrasonic therapeutic apparatus comprises a magnetic resonance device, an ultrasonic device, an ultrasonic therapeutic couch and a head fixing device as described in any one of the above schemes, wherein the ultrasonic therapeutic couch is used to carry a patient to be treated, and the head fixing device is used to fix the patient's head to the ultrasonic therapeutic couch.

[0020] In one of the embodiments, the ultrasonic therapy bed includes a bed frame, a frame fixing plate, a positioning support rod and a locking rod. The frame fixing plate is arranged on the bed frame in an adjustable manner along the vertical direction, and the positioning support rod and the locking rod are respectively arranged on the frame fixing plate; a positioning notch and a locking slot are provided on the fixing frame, and when the fixing frame is fixed on the ultrasonic therapy bed, the positioning notch abuts against the positioning support rod, and the locking rod is inserted into and locks the locking slot.

[0021] The above-mentioned head fixation device and magnetic resonance-guided ultrasonic therapy device can quickly realize adjustment along the patient's height direction and adjustment along the rotation radial direction of the fixed frame through adjustment rods and positioning needles that can be adjusted in multiple positions, so that the head fixation device can quickly fix the heads of patients with different head shapes, improve the fixation efficiency of the patient's head, and thus shorten the single treatment time of ultrasonic therapy based on magnetic resonance imaging guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a head fixing device provided in one embodiment of the present invention;

[0025] Figure 2 A first schematic diagram of a state in which a patient's head is fixed by a head fixing device provided by an embodiment of the present invention;

[0026] Figure 3 A second schematic diagram of a state where a patient's head is fixed by a head fixing device provided by an embodiment of the present invention;

[0027] Figure 4 A schematic top view of a patient's head being fixed by a head fixing device provided by an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the structure of a neck airbag provided by an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the connection state of a neck airbag and an air pressure regulating assembly provided in one embodiment of the present invention.

[0030] Among them: 10-head fixing device; 100-fixed frame, 110-adjusting frame, 120-support column 121-positioning notch, 122-locking slot, 130-handle, 140-second fastener, 150-first fastener; 200-adjusting rod, 210-adjusting strip hole; 300-positioning needle; 400-neck airbag, 410-mounting hole, 420-arc-shaped protrusion; 500-air pressure regulating assembly, 510-connecting pipe, 520-pressure sensor, 530-three-way valve, 540-gas filter, 550-gas one-way valve, 560-air pump; 810-frame fixing plate, 820-positioning support rod, 830-locking rod, 840-fixed plate support seat; 900-patient's head. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The following description of the specific implementation is merely exemplary, and it should be understood that the specific implementation described herein is only used to explain the present invention, and is by no means a limitation of the present invention and its application or usage.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. On the contrary, when an element is referred to as being "directly" connected to another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] As ultrasound therapy has the advantages of high treatment efficiency, immediate effect, and no radiation, with the deepening of research and development of ultrasound technology, ultrasound therapy equipment has been more and more widely used in clinical practice and even in daily health care. Ultrasound therapy is a kind of mechanical vibration. The high-power focused ultrasound energy can instantly generate a local high temperature of 55 to 75°C, causing the target area tissue protein to coagulate and die, thus achieving the purpose of treating the disease. The ultrasound focusing treatment head can focus the energy of ultrasound to one point and "attack" the lesion with "concentrated firepower". MRI (magnetic resonance imaging) technology is combined with ultrasound therapy technology to track / follow the lesion with MRI image guidance, thereby achieving high-precision and efficient treatment effects. In the process of ultrasound therapy guided by magnetic resonance imaging, the patient's head needs to be completely fixed, so the fixation efficiency of the patient's head becomes one of the key factors affecting the efficiency of ultrasound therapy guided by magnetic resonance imaging.

[0035] like Figure 1-3 As shown, an embodiment of the present invention provides a head fixing device 10, which includes a fixing frame 100, a plurality of adjustment rods 200, and a plurality of positioning pins 300. The fixing frame 100 is annular, and the hollow part of the fixing frame 100 can accommodate the patient's head, and the fixing frame 100 can be fixed on the ultrasonic treatment bed. A plurality of adjustment rods 200 are respectively arranged on the fixing frame 100 along the rotation direction of the fixing frame 100, and each adjustment rod 200 is fixedly arranged on the fixing frame 100 in an adjustable position along the patient's height direction. Multiple positioning pins 300 are respectively arranged at one end of multiple adjustment rods 200, and each positioning pin 300 is fixedly arranged on the adjustment rod 200 in an adjustable radial position along the rotation radial direction of the fixed frame 100. The multiple positioning pins 300 cooperate to fix the patient's head along the rotation radial direction of the fixed frame 100. The above-mentioned head fixing device 10 can quickly realize adjustment along the patient's height direction and adjustment along the rotation radial direction of the fixed frame 100 through multiple adjustable adjustment rods 200 and positioning pins 300, which is convenient for the head fixing device 10 to quickly fix the heads of patients with different head shapes, thereby improving the fixation efficiency of the patient's head 900, and thereby shortening the single treatment time of ultrasonic treatment guided by magnetic resonance imaging.

[0036] The fixing frame 100 is an intermediate connecting piece for fixing the patient's head 900 to the ultrasonic treatment bed, and it mainly plays the role of auxiliary support. It can be understood that the annular fixing frame 100 can be a rectangular ring, a circular ring, or a quasi-circular ring (such as a polygonal ring close to a circular ring). Figure 1As shown, the fixed frame 100 is a polygonal ring that is close to a circular ring as a whole, and the rotation plane of the fixed frame 100 is perpendicular to the direction of the patient's height. Further, the fixed frame 100 includes an adjustment frame 110 and a support column 120. The adjustment frame 110 is annular, and the hollow part of the adjustment frame 110 can accommodate the patient's head. A plurality of adjustment rods 200 are respectively arranged on the adjustment frame 110 along the rotation direction of the adjustment frame 110, and each adjustment rod 200 is fixedly arranged on the adjustment frame 110 in an adjustable position along the direction of the patient's height. The support column 120 can be fixed on the ultrasonic treatment bed, and the adjustment frame 110 is fixedly arranged on the support column 120 in an adjustable position along the patient's face direction.

[0037] As a feasible approach, Figure 4 As shown, the patient in the above embodiment is fixed on the ultrasonic treatment bed in a lying manner, that is, the patient's face is facing the vertical direction of the space, and the patient's height direction is the horizontal front-to-back direction. The head fixing device 10 in the above embodiment realizes the adjustment of the distance between the patient's head 900 and the ultrasonic treatment bed in the vertical direction by means of the adjustment frame 110 and the support column 120. Furthermore, the fixed frame 100 includes two support columns 120, and the two support columns 120 respectively support the adjustment frame 110 on both sides of the patient's face. The two support columns 120 can support the adjustment frame 110 more stably. In other embodiments, the patient can also be fixed on the ultrasonic treatment bed in a side-lying manner.

[0038] Optionally, the position of the adjustment frame 110 relative to the support column 120 can be adjusted continuously and discontinuously. When the position of the adjustment frame 110 relative to the support column 120 can be adjusted discontinuously, the adjustment frame 110 or the support column 120 can have multiple fixed positions arranged at intervals along the direction of the patient's face. When the position of the adjustment frame 110 relative to the support column 120 can be adjusted continuously, the adjustment frame 110 or the support column 120 can have multiple continuous fixed positions along the direction of the patient's face. Figure 1-3As shown, in one embodiment of the present invention, the position of the adjustment frame 110 relative to the support column 120 can be continuously adjusted, a fixing hole is provided on the support column 120 in the direction of the patient's face, and strip holes are provided on both sides of the adjustment frame 110 in the direction of the patient's face. The fixing hole on the support column 120 can be connected to any position of the strip hole on the adjustment frame 110 through the first fastener 150. By loosening the first fastener 150, the position of the adjustment frame 110 relative to the support column 120 in the direction of the patient's face can be adjusted, thereby adjusting the distance between the patient's head 900 and the ultrasonic treatment bed. Further, each support column 120 has two spaced fixing holes in the direction of the patient's face, and the two fixing holes are fixedly connected to the strip holes on the adjustment frame 110 through the first fastener 150, respectively. The two fixing holes cooperate with the two first fasteners 150 to fix the adjustment frame 110 more stably. Optionally, the first fastener 150 includes a bolt or a screw.

[0039] The support column 120, as a structure for supporting the adjustment frame 110, is also directly in contact with the ultrasonic treatment bed and is directly fixed to the ultrasonic treatment bed. It is understandable that the support column 120 can be fixedly installed on the ultrasonic treatment bed in various feasible ways. Figure 1-2 As shown, a positioning notch 121 and a locking slot 122 are provided on the support column 120. When the support column 120 is fixed on the ultrasonic treatment bed, the positioning notch 121 abuts against the positioning support structure on the ultrasonic treatment bed, and the locking slot 122 is locked by the locking structure on the ultrasonic treatment bed. The positioning notch 121 on the support column 120 and the positioning support structure on the ultrasonic treatment bed can simultaneously realize the positioning and support of the support column 120. Further, the positioning notch 121 on the support column 120 is a V-shaped notch facing the ultrasonic treatment bed. When the support column 120 is fixed on the ultrasonic treatment bed along the direction of the patient's face, the positioning notch 121 on the support column 120 faces downward, and the V-shaped notch can also play a guiding role. The locking slot 122 is locked by the locking structure on the ultrasonic treatment bed, which can realize the complete fixation of the adjustment frame 110 relative to the support column 120, ensuring the stable progress of the ultrasonic treatment process guided by magnetic resonance imaging. Further, the locking slot 122 is a polygonal slot facing the outside of the adjustment frame 110, and the locking structure can lock the locking slot 122.

[0040] In the actual treatment process, it is necessary to transfer the patient from one type of treatment bed to another type of treatment bed, or the patient needs to receive different stages of treatment on different treatment beds. In this case, the patient and the head fixing device 10 that fixes his head need to be transferred together. In one embodiment of the present invention, different treatment beds have the same positioning support structure and locking structure, so that the patient and the head fixing device 10 that fixes his head can be transferred together. In order to ensure that the patient and the head fixing device 10 that fixes his head can be conveniently transferred together, as shown in FIG. Figure 1-3 As shown, in one embodiment of the present invention, the fixing frame 100 further includes a handle 130, which is disposed on the adjusting frame 110 at a position corresponding to the patient's face. When it is necessary to transfer a patient wearing the head fixing device 10, the medical staff only needs to pull the handle 130 to lift up the head fixing device 10 and the patient's head 900, and then transfer the patient's body to conveniently realize the transfer of the patient and the head fixing device 10 between different treatment beds.

[0041] The adjusting rod 200 can be adjusted relative to the fixing frame 100 in the direction of the patient's height, so that the medical staff can adjust the relative position between the patient's head 900 and the fixing frame 100 according to the actual treatment situation of the patient, thereby ensuring the smooth progress of the magnetic resonance imaging and ultrasonic treatment process. In order to more stably fix the patient's head, in one embodiment of the present invention, Figure 1-3 As shown, the line connecting the positions where at least two adjusting rods 200 are fixedly arranged on the fixed frame 100 passes through the rotation center of the fixed frame 100. In this case, the two adjusting rods 200 are centrally symmetrical about the rotation center of the fixed frame 100. Similarly, the two positioning pins 300 respectively fixed on the two adjusting rods 200 are also centrally symmetrical about the rotation center of the fixed frame 100. The positioning pins 300 respectively fixed on the two adjusting rods 200 are parallel to each other, or the extension lines of the two positioning pins 300 along their own extension direction are overlapped, so that the two positioning pins 300 can form a stable fixing force on the patient's head 900, and avoid a certain torque on the patient's head 900 when multiple positioning pins 300 cooperate to fix the patient's head 900.

[0042] Optionally, the number of the adjusting rods 200 and the positioning pins 300 in the above embodiment can be designed according to the actual working conditions, as long as the patient's head can be stably fixed. Figure 1-3As shown, the number of the adjusting rods 200 and the positioning pins 300 is an even number, and every two adjusting rods 200 are centrally symmetrical about the rotation center of the fixed frame 100, which means that the line connecting the positions where the two adjusting rods 200 are fixedly arranged on the fixed frame 100 passes through the rotation center of the fixed frame 100. Similarly, the two positioning pins 300 respectively fixed on the two adjusting rods 200 are also centrally symmetrical about the rotation center of the fixed frame 100. Further, the head fixing device 10 includes four adjusting rods 200, and the four adjusting rods 200 are diagonally arranged in an X shape on the fixed frame 100. The positions where the four adjusting rods 200 are respectively connected to the fixed frame 100 form four diagonal corners of the X shape. The positions where the four adjusting rods 200 are respectively connected to the fixed frame 100 are respectively connected to the rotation center of the fixed frame 100, so as to form the above-mentioned X shape. Furthermore, the four adjustment rods 200 extend out of the fixing frame 100 to the same length, and the four positioning pins 300 form the aforementioned X shape. The X-shaped arrangement can stably fix the patient's head 900 .

[0043] The convenience of adjusting the position of the adjusting rod 200 relative to the fixing frame 100 is one of the key factors affecting the efficiency of the head fixing device 10 in fixing the patient's head 900. Optionally, the position of the adjusting rod 200 relative to the adjusting frame 110 can be adjusted continuously and discontinuously. When the position of the adjusting rod 200 relative to the adjusting frame 110 can be adjusted discontinuously, the adjusting rod 200 or the adjusting frame 110 can have a plurality of fixed positions arranged at intervals along the patient's height direction. When the position of the adjusting rod 200 relative to the adjusting frame 110 can be adjusted continuously, the adjusting rod 200 or the adjusting frame 110 can have a plurality of continuous fixed positions along the patient's height direction.

[0044] In one embodiment of the present invention, Figure 1-3 As shown, the position of the adjusting rod 200 relative to the adjusting frame 110 can be continuously adjusted, the adjusting rod 200 is provided with an adjusting strip hole 210 along its own extension direction, and the adjusting frame 110 is provided with a fastening hole, and the fastening hole on the adjusting frame 110 is fixedly connected with any position of the strip hole on the adjusting rod 200 through the second fastener 140, and the position adjustment of the adjusting rod 200 relative to the adjusting frame 110 along the patient's height direction can be achieved by loosening the second fastener 140. Further, the positioning pin 300 is installed at one end of the adjusting rod 200 in an adjustable position by a threaded connection. When it is necessary to tighten or loosen the patient's head 900 along the rotation radial direction of the fixing frame 100, it can be achieved by rotating the positioning pin 300, and the thread itself has the function of precise adjustment and self-locking, which further ensures that the head fixing device 10 effectively fixes the patient's head 900. As a feasible method, the medical staff can rotate the positioning pin 300 to be adjusted by a special tool or directly by hand. Optionally, the second fastener 140 includes a screw or a bolt.

[0045] The process of ultrasound treatment for a patient generally lasts for 2-4 hours, and the patient is not completely unconscious. If the patient's head is supported only by the fixing frame 100, the adjustment rod 200 and the positioning pin 300, the pressure between the positioning pin 300 and the patient's head 900 will be very large, increasing the patient's pain during the treatment. Figure 3 and Figure 5-6 As shown, the head fixing device 10 further includes a neck airbag 400, which is detachably arranged on the fixing frame 100 at a position corresponding to the back of the patient's neck. The neck airbag 400 can effectively support the patient's neck and back of the head, reduce the pressure between the positioning needle 300 and the patient's head 900 to a certain extent, and thus reduce the patient's pain during the entire treatment process.

[0046] Optionally, the amount of air in the neck airbag 400 is fixed or adjustable. Figure 5-6 As shown, as an achievable method, the head fixing device 10 also includes an air pressure regulating component 500, which is connected to the neck airbag 400, and the air pressure regulating component 500 is used to control the air pressure in the neck airbag 400 within a set range. The air pressure regulating component 500 can adjust the amount of air in the neck airbag 400 according to the patient's body shape or the actual treatment process, and then adjust the neck airbag 400 to the extent of effectively supporting the patient, thereby reducing the patient's pain to the greatest extent. Further, the process of adjusting the amount of air in the neck airbag 400 before the treatment process is controlled by medical staff or the patient himself. When the patient controls the adjustment of the amount of air in the neck airbag 400 before the treatment process, the patient can adjust the inflation or deflation according to his own feelings. It can be understood that when the treatment process begins, the gas content in the neck airbag 400 no longer changes to ensure that the position of the patient's head does not change.

[0047] As a feasible approach, Figure 5-6As shown, the air pressure regulating assembly 500 includes a connecting pipe 510, a pressure sensor 520, a three-way valve 530, a gas filter 540, a gas one-way valve 550 and an air pump 560. The two ends of the connecting pipe 510 are respectively connected to the neck airbag 400 and the air pump 560. The air pump 560 is used to fill air into the neck airbag 400. The gas one-way valve 550, the gas filter 540, the three-way valve 530 and the pressure sensor 520 are respectively arranged in sequence in the middle part of the connecting pipe 510 along the flow direction of the gas during inflation. Under the control of medical staff or patients, the air pressure regulating assembly 500 enters the inflation state, the three-way valve 530 connects the connecting tubes 510 on both sides, the air pump 560 compresses the gas in the air and pumps it into the connecting tube 510, and the gas entering the connecting tube 510 passes through the gas one-way valve 550, the gas filter 540, and the three-way valve 530, and finally enters the neck airbag 400. During this process, the pressure sensor 520 monitors the gas pressure value in the connecting tube 510 in real time. The pressure sensor 520 is electrically connected to the air pump 560, and the pressure sensor 520 can transmit the gas pressure value in the connecting tube 510 to the air pump 560. The patient or medical staff can adjust the inflation amount in the neck airbag 400 within the set pressure range.

[0048] When the air pressure value in the connecting tube 510 reaches the upper limit of the set range, the air pump 560 stops pumping gas into the connecting tube 510, and the gas one-way valve 550 can keep the gas sealed in the neck airbag 400 and the connecting tube 510, thereby maintaining the air pressure value in the connecting tube 510 and the neck airbag 400. When the pressure sensor 520 detects that the air pressure value in the connecting tube 510 is less than the set range, the air pump 560 is allowed to start to fill the connecting tube 510 and the neck airbag 400 with gas. Further, the position of the neck airbag 400 that contacts the back of the patient's neck has a smooth arc-shaped protrusion 420, and the arc-shaped protrusion 420 is adapted to the back of the patient's neck. Due to the expansion of the compressed air, the entire neck airbag 400 will completely fit the patient's neck and support the patient's neck, so that the patient is in a relaxed state during the entire treatment process.

[0049] More advanced, such as Figure 5-6 As shown, the neck airbag 400 has a mounting hole 410, and the mounting hole 410 is provided on the fixing frame 100 at a position corresponding to the back of the patient's neck. As a feasible way, the mounting hole 410 is provided on the adjusting frame 110 to ensure that the neck airbag 400 always supports the patient's neck. When the treatment process is completed, the patient or medical staff can control the three-way valve 530 to connect the connecting pipe 510 on one side of the neck airbag 400 with the external space, and the compressed air in the neck airbag 400 and the connecting pipe 510 is discharged, and then the head fixing device 10 can be removed from the patient's head 900. Optionally, the three-way valve 530 includes an electromagnetic three-way valve.

[0050] An embodiment of the present invention further provides a magnetic resonance-guided ultrasonic therapeutic apparatus, comprising a magnetic resonance device, an ultrasonic device, an ultrasonic therapeutic bed, and a head fixing device 10 of any of the above-mentioned schemes, wherein the ultrasonic therapeutic bed is used to carry a patient to be treated, and the head fixing device 10 is used to fix the patient's head on the ultrasonic therapeutic bed. The above-mentioned magnetic resonance-guided ultrasonic therapeutic apparatus can quickly realize adjustment along the patient's height direction and adjustment along the rotation radial direction of the fixed frame 100 through an adjustment rod 200 and a positioning pin 300 that can be adjusted in multiple positions, so that the head fixing device 10 can quickly fix the heads of patients with different head shapes, thereby improving the fixation efficiency of the patient's head 900, and thereby shortening the single treatment time of ultrasonic therapy based on magnetic resonance imaging guidance.

[0051] In one embodiment of the present invention, Figure 1-3 As shown, the ultrasonic treatment bed includes a bed frame, a frame fixing plate 810, a positioning support rod 820 and a locking rod 830. The frame fixing plate 810 is arranged on the bed frame in an adjustable position along the vertical direction, and the positioning support rod 820 and the locking rod 830 are respectively arranged on the frame fixing plate 810. A positioning notch 121 and a locking card slot 122 are provided on the fixed frame 100. When the fixed frame 100 is fixed on the ultrasonic treatment bed, the positioning notch 121 abuts against the positioning support rod 820, and the locking rod 830 is inserted into and locked in the locking card slot 122. Further, the ultrasonic treatment bed also includes a fixed plate support seat 840, and there are multiple connection positions with different heights between the fixed plate support seat 840 and the frame fixing plate 810 in the vertical direction, and the fixed plate support seat 840 is directly fixedly mounted on the bed frame. Furthermore, the number of the fixed plate connection seat, the frame fixing plate 810, the positioning support rod 820 and the locking rod 830 are two respectively, and they respectively support the support columns 120 located on both sides of the fixed frame 100.

[0052] The head fixing device 10 and the magnetic resonance guided ultrasonic therapeutic apparatus provided in the above-mentioned embodiments can allow the patient to quickly wear the head fixing device 10 during the magnetic resonance imaging guided ultrasonic treatment process, and can quickly fix the patient wearing the head fixing device 10 on the MRI bed, and also facilitate the medical staff to make various adjustments to the head fixing device 10 during the wearing of the head fixing device 10. The support of the neck airbag 400 to the patient's neck greatly alleviates the patient's pain during the treatment process. It should be understood that the control system of the magnetic resonance guided ultrasonic therapeutic apparatus is set outside the MRI room, and will not affect the work of the internal MRI when working.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A head fixing device, characterized in that: The head fixing device comprises: A fixed frame, the fixed frame is annular, the hollow part of the fixed frame can accommodate the patient's head, and the fixed frame can be fixed on the ultrasonic treatment bed; the fixed frame includes an adjustment frame and a support column; the fixed frame also includes a handle, and the handle is arranged on the adjustment frame at a position corresponding to the patient's face; a positioning notch and a locking slot are provided on the support column, and when the support column is fixed to the ultrasonic treatment bed, the positioning notch abuts against the positioning support structure on the ultrasonic treatment bed, and the locking slot is locked by the locking structure on the ultrasonic treatment bed; the positioning notch is a V-shaped notch facing the ultrasonic treatment bed; A plurality of adjustment rods are respectively arranged on the fixed frame along the rotation direction of the fixed frame, and each of the adjustment rods is adjustable and fixed on the fixed frame along the patient's height direction; A plurality of positioning pins are respectively arranged on the plurality of adjusting rods, each of the positioning pins is adjustably fixed on the adjusting rod along the rotational radial direction of the fixing frame, and the plurality of positioning pins cooperate to fix the patient's head along the rotational radial direction of the fixing frame.

2. The head fixing device according to claim 1, characterized in that: The adjustment frame is ring-shaped, and the hollow part of the adjustment frame can accommodate the patient's head. A plurality of adjustment rods are respectively arranged on the adjustment frame along the rotation direction of the adjustment frame, and each adjustment rod is fixedly arranged on the adjustment frame in an adjustable manner along the patient's height direction; the support column can be fixed on the ultrasonic treatment bed, and the adjustment frame is fixedly arranged on the support column in an adjustable manner along the patient's face direction.

3. The head fixing device according to claim 2, characterized in that: The fixing frame comprises two supporting columns, and the two supporting columns respectively support the adjusting frame along the left and right sides of the patient's face.

4. The head fixing device according to claim 1, characterized in that: A line connecting the positions where at least two adjusting rods are fixedly arranged on the fixing frame passes through the rotation center of the fixing frame.

5. The head fixing device according to claim 4, characterized in that: The head fixing device comprises four adjusting rods, and the four adjusting rods are arranged diagonally on the fixing frame.

6. The head fixing device according to claim 1, characterized in that: The extension direction of the adjustment rod is parallel to the patient's height direction. The adjustment rod has an adjustment strip hole along its own extension direction. The fixed frame has a fastening hole. The fastening hole on the fixed frame is fixedly connected to any position of the strip hole on the adjustment rod through a fastener.

7. The head fixing device according to any one of claims 1 to 6, characterized in that: The head fixing device also includes a neck airbag, which is detachably arranged at a position on the fixing frame corresponding to the back of the patient's neck.

8. The head fixing device according to claim 7, characterized in that: The head fixing device also includes an air pressure regulating component, which is connected to the neck airbag and is used to control the air pressure in the neck airbag to be within a set range.

9. The head fixing device according to claim 8, characterized in that: The air pressure regulating assembly includes a connecting pipe, a pressure sensor, a three-way valve, a gas filter, a gas one-way valve and an air pump. The two ends of the connecting pipe are respectively connected to the neck airbag and the air pump. The air pump is used to fill air into the neck airbag. The gas one-way valve, the gas filter, the three-way valve and the pressure sensor are sequentially arranged in the middle part of the connecting pipe along the flow direction of the gas during inflation.

10. The head fixing device according to claim 8, characterized in that: The neck airbag is provided with a mounting hole, and the mounting hole is penetrated through a position on the fixing frame corresponding to the back of the patient's neck; the position on the neck airbag that contacts the back of the patient's neck is provided with a smooth arc-shaped protrusion, and the arc-shaped protrusion is adapted to the back of the patient's neck.

11. A magnetic resonance guided ultrasonic therapeutic apparatus, characterized in that: The invention comprises a magnetic resonance device, an ultrasonic device, an ultrasonic treatment bed and the head fixing device according to any one of claims 1 to 10, wherein the ultrasonic treatment bed is used to carry a patient to be treated, and the head fixing device is used to fix the patient's head on the ultrasonic treatment bed.

12. The magnetic resonance-guided ultrasonic therapeutic apparatus according to claim 11, characterized in that: The ultrasonic treatment bed includes a bed frame, a frame fixing plate, a positioning support rod and a locking rod. The frame fixing plate is arranged on the bed frame in an adjustable manner along the vertical direction. The positioning support rod and the locking rod are respectively arranged on the frame fixing plate. A positioning notch and a locking slot are provided on the fixing frame. When the fixing frame is fixed on the ultrasonic treatment bed, the positioning notch abuts against the positioning support rod, and the locking rod is inserted into and locks the locking slot.

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