A coil holder for positioning a magnetic resonance coil in radiotherapy

Abstract

The utility model discloses a kind of for radiotherapy positioning nuclear magnetic coil support, including bracket, the upper surface of the bracket is slidably connected with arcuate support, the downside of arcuate support is equipped with adjustable coil placement plate, further including adjusting mechanism;Adjusting mechanism: it includes fixed cylinder, slide bar, bolt, U block, fixed rod three and recess, the lower surface left and right sides of the fixed cylinder are fixedly connected in arcuate support respectively, the inside downside of fixed cylinder is slidably connected with slide bar, coil placement plate is fixedly connected between the lower surface of two slide bars, the inside downside of arcuate support is rotatably connected with evenly distributed U block, this for radiotherapy positioning nuclear magnetic coil support, transmission efficiency is high, cooperation scale line can effectively and quickly adjust the height of nuclear magnetic coil, simultaneously lock coil fixing plate and coil placement plate, operation process is simple and fast, and can guarantee the fixing effect of nuclear magnetic coil.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a magnetic resonance coil support for radiotherapy positioning. Background Technology

[0002] Radiotherapy is one of the main methods of treating tumors in modern medicine. Its core goal is to concentrate the radiation dose to the lesion target area to the maximum extent while protecting the surrounding normal tissues to the maximum extent. The key to achieving this goal is accurate target area localization. Therefore, magnetic resonance imaging is usually used to obtain imaging data in the patient's body. During magnetic resonance imaging, a magnetic coil support is needed to support the magnetic coil. In the prior art, patent publication number CN215914587U discloses a nuclear resonator coil support, including a coil tray, a frame, and a height adjustment device; the coil tray includes a tray body and two sliding mechanisms, which are respectively connected to the front and rear ends of the tray body and slidably connected to the frame, and can slide up and down along the frame; the height adjustment device is fixed on the tray body and is drivenly connected to one of the sliding mechanisms. This type of nuclear magnetic resonance coil support has the following disadvantages: the first gear is rotated by a transmission component, and the rotation of the first gear meshes with the fixed first rack, thereby driving the telescopic mechanism to move, so as to move the tray body and thus adjust the coil. The multi-stage transmission efficiency is low. The coil and the tray body are fixed and limited separately, and the operation process is cumbersome. The coil is fixed by Velcro, but because Velcro is flexible, it is not stable enough when fixing the coil, and the coil may move, which will lead to the deviation of the image position during subsequent magnetic resonance imaging. Therefore, we propose a nuclear magnetic resonance coil support for radiotherapy positioning. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a support for positioning MRI coils in radiotherapy. Through an adjustment mechanism, a gear drives a rack plate, which in turn moves the coil fixing plate, resulting in high transmission efficiency. Combined with the scale lines, the height of the MRI coil can be effectively and quickly adjusted. The pressure generated between the top block, the fixing rod, and the sliding rod simultaneously locks the coil fixing plate and the coil placement plate. The operation is simple and quick, ensuring the MRI coil is firmly fixed and preventing wobbling during use, thus ensuring the effectiveness of magnetic resonance imaging. This invention effectively solves the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a magnetic resonance imaging (MRI) coil support for radiotherapy positioning, comprising an adjustment mechanism including a fixed cylinder, a sliding rod, a bolt, a U-shaped block, a fixing rod three, and a groove. The fixed cylinder is fixedly connected to the left and right sides of the lower surface of the arched support. Sliding rods are slidably connected to the lower inner side of each fixed cylinder. A coil placement plate is fixedly connected between the lower surfaces of the two sliding rods. U-shaped blocks are rotatably connected to the lower inner side of the arched support. Fixing rod three is fixedly connected to the upper inner side of each U-shaped block. A connecting block is rotatably connected to the outer surface of the fixing rod three. A bolt is threadedly connected to the lower inner side of the arched support. The lower ends of the bolts and studs are rotatably connected to the upper ends of the adjacent connecting blocks on the same side. Grooves are provided on both the front and rear sides of the lower surface of the bracket, and the U-shaped blocks are installed in conjunction with the grooves. Through the adjustment mechanism, the gear drives the rack plate to move, which in turn drives the coil fixing plate to move. The transmission efficiency is high. With the help of the scale lines, the height of the nuclear magnetic resonance coil can be effectively and quickly adjusted. By squeezing between the top block and the fixing rod and the slide rod, the coil fixing plate and the coil placement plate are locked synchronously. The operation process is simple and quick, and it can ensure the fixing effect of the nuclear magnetic resonance coil, avoid the nuclear magnetic resonance coil from shaking during use, and ensure the effect of magnetic resonance imaging.

[0005] Furthermore, the adjustment mechanism also includes a transmission rod, gears, and a rack plate. The transmission rod is rotatably connected to the upper inner side of the arched bracket. Gears are fixedly connected to both the left and right sides of the outer surface of the transmission rod. A rack plate is fixedly connected to the upper surface of the slide rod. The rack plates are meshed with the gears on the same side to transmit driving force.

[0006] Furthermore, a fixing rod is fixedly connected to both the front and rear sides of the coil placement plate. A coil fixing plate is rotatably connected to the outer surface of the fixing rod. A torsion spring is sleeved on the outer surface of the fixing rod. The left end of the torsion spring is fixedly connected to the outer surface of the fixing rod on the same side, and the right end of the torsion spring is fixedly connected to the lower surface of the coil fixing plate on the same side, thus initially fixing the nuclear magnetic coil.

[0007] Furthermore, a movable block is slidably connected between the two fixed rods, and a fixed rod is fixedly connected to the upper surface of the movable block to transmit driving force and facilitate locking the coil fixing plate.

[0008] Furthermore, a locking seat is fixedly connected to the left surface of the right-side fixed cylinder. A screw is rotatably connected inside the locking seat. A slider is threadedly connected to the lower side of the outer surface of the screw. The rear surface of the slider is slidably connected to the inner wall of the locking seat. Top blocks are slidably connected to both the left and right sides inside the locking seat to lock the coil fixing plate and the slider.

[0009] Furthermore, a knob is fixedly connected to the upper surface of the screw to facilitate rotation of the screw.

[0010] Furthermore, a spring is fixedly connected to the lower inside of the right-side fixing cylinder to prevent the coil placement plate from falling and injuring the patient after the slide bar is unlocked.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This magnetic resonance coil stent for radiotherapy positioning has the following advantages: 1. The adjustment mechanism drives the rack plate to move, which in turn drives the coil fixing plate to move. The transmission efficiency is high, and with the help of the scale lines, the height of the nuclear magnetic coil can be adjusted effectively and quickly.

[0012] 2. By squeezing between the top block and the second fixing rod and the sliding rod, the coil fixing plate and the coil placement plate are locked synchronously. The operation is simple and quick, and it can ensure the fixing effect of the nuclear magnetic coil, prevent the nuclear magnetic coil from shaking during use, and ensure the effect of magnetic resonance imaging. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of point A in this utility model; Figure 4 This is an enlarged structural diagram of section B of the present invention; Figure 5 This is an exploded view of the fixed cylinder, slide rod, rack plate, and spring on the right side of this utility model. Figure 6 This is an exploded structural diagram of the bolt, U-shaped block, fixing rod, and groove of this utility model.

[0014] In the diagram: 1 bracket, 2 arched support, 3 coil placement plate, 4 adjustment mechanism, 41 fixed cylinder, 42 slide rod, 43 transmission rod, 44 gear, 45 rack plate, 46 bolt, 47 U-shaped block, 48 fixed rod three, 49 groove, 5 fixed rod one, 6 torsion spring, 7 coil fixing plate, 8 movable block, 9 fixed rod two, 10 locking seat, 11 knob, 12 screw, 13 slider, 14 top block, 15 spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6This embodiment provides a technical solution: a magnetic resonance coil support for radiotherapy positioning, including a bracket 1, an arched support 2 slidably connected to the upper surface of the bracket 1, an adjustable coil placement plate 3 provided on the lower side of the arched support 2, and an adjustment mechanism 4. Adjustment mechanism 4 includes a fixed cylinder 41, a sliding rod 42, a bolt 46, a U-shaped block 47, a fixed rod 48, and a groove 49. The fixed cylinder 41 is fixedly connected to the left and right sides of the lower surface of the arched bracket 2. A spring 15 is fixedly connected to the lower inside of the right fixed cylinder 41. The sealing cover on the front surface of the right fixed cylinder 41 can be opened, and the spring 15 can be removed and replaced to prevent the spring 15 from weakening after long-term use and becoming unusable. Sliding rods 42 are slidably connected to the lower inside of the fixed cylinder 41. The coil placement plate 3 is fixedly connected between the lower surfaces of the two sliding rods 42. The lower side is rotatably connected to evenly distributed U-shaped blocks 47. Each U-shaped block 47 has a fixed upper inner side connected to a fixing rod 48. A connecting block is rotatably connected to the outer surface of the fixing rod 48. Each arched bracket 2 has a threaded bolt 46 on its lower inner side. The lower end of each bolt 46 is rotatably connected to the upper end of an adjacent connecting block on the same side. Grooves 49 are provided on both the front and rear sides of the lower surface of the bracket 1. The U-shaped blocks 47 are installed by fitting into the grooves 49. Loosening the bolts 46 causes them to move, which in turn moves the connecting blocks, causing the upper end of the U-shaped blocks 47 to move closer to the coil placement plate 3 and the lower end of the U-shaped blocks 47 to move away from the coil placement plate 3. The movement separates the lower end of the U-shaped block 47 from the inner wall of the groove 49. At this point, the arched support 2 is pushed, positioning the MRI coil above the area where the patient will receive radiotherapy. Then, the bolt 46 is reversed, causing it to move and contact the lower end of the U-shaped block 47, pressing against the inner wall of the groove 49, thus locking the arched support 2 in place. The adjustment mechanism 4 also includes a transmission rod 43, gears 44, and rack plates 45. The transmission rod 43 is rotatably connected to the upper inner side of the arched support 2. Gears 44 are fixedly connected to both sides of the outer surface of the transmission rod 43. Rack plates 45 are fixedly connected to the upper surface of the slide rod 42. The rack plates 45 are all connected to the same side... The gear 44 meshes with the rack plate 45 and the gear 44, which are both located inside the arched bracket 2, thus protecting the rack plate 45 and the gear 44 and preventing external dust from sticking to the surface of the rack plate 45 and the gear 44 and affecting the transmission. Rotating the handle on the right side of the transmission rod 43 causes the transmission rod 43 to rotate, which drives the gear 44 to rotate, moves the rack plate 45, moves the slide rod 42, and drives the coil placement plate 3 to move, thereby adjusting the position of the nuclear magnetic coil. The front surface of the slide rod 42 on the right side is provided with scale lines, and the height of the slide rod 42 can be precisely adjusted according to the position of the scale lines relative to the plane of the lower surface of the fixed cylinder 41. The coil placement plate 3 has a fixing rod 5 fixedly connected to both the front and rear sides inside. The outer surface of the fixing rod 5 is rotatably connected to the coil fixing plate 7. The outer surface of the fixing rod 5 is fitted with a torsion spring 6. The left end of the torsion spring 6 is fixedly connected to the outer surface of the fixing rod 5 on the same side, and the right end of the torsion spring 6 is fixedly connected to the lower surface of the coil fixing plate 7 on the same side. The fixing rod 5 can be removed from the inside of the coil placement plate 3, and the torsion spring 6 can be removed and replaced to avoid the situation where the elasticity of the torsion spring 6 weakens after long-term use and cannot be used normally. Rotate the coil fixing plate 7 to move the coil fixing plate 7 away from the upper side of the coil placement plate 3. At this time, the nuclear magnetic resonance coil is placed on the upper surface of the coil fixing plate 3. Then, the coil fixing plate 7 is released. The torsion spring 6 applies torque to the coil fixing plate 7, causing the coil fixing plate 7 to move towards the coil placement plate 3 around the central axis of the fixing rod 5, thereby squeezing the nuclear magnetic resonance coil and making the lower surface of the coil fixing plate 7 tightly adhere to the nuclear magnetic resonance coil. A movable block 8 is slidably connected between two fixed rods 5. A fixed rod 9 is fixedly connected to the upper surface of the movable block 8. A locking seat 10 is fixedly connected to the left surface of the right-side fixed cylinder 41. A screw 12 is rotatably connected inside the locking seat 10. A slider 13 is threadedly connected to the lower side of the outer surface of the screw 12. A bellows is fixedly connected between the upper surface of the slider 13 and the inner wall of the locking seat 10. The bellows is sleeved on the outer surface of the screw 12 to protect the screw 12 and prevent external dust from adhering to the outer surface of the screw 12 and affecting its normal use. The rear surface of the slider 13 is slidably connected to the inner wall of the locking seat 10. Top blocks 14 are slidably connected to both the left and right sides inside the locking seat 10. A knob 11 is fixedly connected to the upper surface of the screw 12. Rotating the knob 11 causes the screw 12 to rotate, which drives the slider 13 to move, causing the lower end of the slider 13 to press against the top block. The inclined surface of block 14 near the middle of the locking seat 10 causes the top block 14 to move away from the locking seat 10. The left surface of the left top block 14 presses against the fixing rod 9, causing the movable block 8 to move to the left and press against the coil fixing plate 7, thereby locking the coil fixing plate 7. The right surface of the right top block 14 presses against the left surface of the right slide rod 42, thereby locking the slide rod 42, and thus locking the coil placement plate 3. This completes the position adjustment of the MRI coil. When the knob 11 is turned over to unlock the slide rod 42 and the coil fixing plate 7, the coil placement plate 3 may move downward due to gravity, causing the slide rod 42 to move downward. When the inner upper surface of the slide rod 42 contacts the upper end of the spring 15, it applies resistance to the slide rod 42, preventing the coil placement plate 3 from falling further, thus preventing the coil placement plate 3 from falling downward and injuring the patient when the slide rod 42 is unlocked.

[0017] The working principle of the MRI coil positioning support for radiotherapy provided by this utility model is as follows: When using this MRI coil positioning support to place the MRI coil, rotate the coil fixing plate 7 to move it away from the upper side of the coil placement plate 3. At this time, place the MRI coil on the upper surface of the coil fixing plate 3. Then, release the coil fixing plate 7, and the torsion spring 6 applies torque to the coil fixing plate 7, causing the coil fixing plate 7 to move around the central axis of the fixing rod 5 towards the coil placement plate 3, thereby compressing the MRI coil. The lower surface of the coil fixing plate 7 is pressed tightly against the MRI coil. Bolt 46 is loosened, causing it to move and move the connecting block. This moves the upper end of the U-shaped block 47 closer to the coil placement plate 3 and the lower end of the U-shaped block 47 away from the coil placement plate 3, separating the lower end of the U-shaped block 47 from the inner wall of the groove 49. At this point, the arched bracket 2 is pushed, positioning the MRI coil above the area where the patient will receive radiotherapy. Then, bolt 46 is reversed, causing it to move and bring the lower end of the U-shaped block 47 into contact with the MRI coil. The inner wall of the groove 49 is pressed to fix and lock the arched bracket 2. Then, the handle on the right side of the transmission rod 43 is rotated to make the transmission rod 43 rotate, which drives the gear 44 to rotate, moves the rack plate 45, and moves the slide rod 42 to move the coil placement plate 3, thereby adjusting the position of the nuclear magnetic coil. The front surface of the right slide rod 42 has scale lines, and the height of the slide rod 42 can be precisely adjusted according to the position of the scale lines relative to the plane of the lower surface of the fixed cylinder 41. Then, the knob 11 is rotated to make the screw 12 rotate, which drives the slide rod 42 to move the screw 1 ... The movement of block 13 causes the lower end of slider 13 to press against the inclined surface of top block 14 near the middle of locking seat 10, causing top block 14 to move away from locking seat 10. The left surface of top block 14 on the left presses against fixing rod 9, causing movable block 8 to move to the left and press against coil fixing plate 7, thereby locking coil fixing plate 7. The right surface of top block 14 on the right presses against the left surface of right slide rod 42, thereby locking slide rod 42, thus locking coil placement plate 3, thereby completing the position adjustment of nuclear magnetic coil.

[0018] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A magnetic resonance imaging (MRI) coil support for radiotherapy positioning, comprising a bracket (1), wherein an arched support (2) is slidably connected to the upper surface of the bracket (1), and an adjustable coil placement plate (3) is provided on the lower side of the arched support (2), characterized in that: It also includes the adjustment mechanism (4); Adjustment mechanism (4): It includes a fixed cylinder (41), a sliding rod (42), a bolt (46), a U-shaped block (47), a fixed rod three (48), and a groove (49). The fixed cylinder (41) is fixedly connected to the left and right sides of the lower surface of the arched bracket (2). The sliding rod (42) is slidably connected to the lower side of the fixed cylinder (41). The coil placement plate (3) is fixedly connected between the lower surfaces of the two sliding rods (42). The U-shaped blocks (47) are evenly distributed and rotatably connected to the lower side of the arched bracket (2). The fixed rod three (48) is fixedly connected to the upper side of the U-shaped block (47). The connecting block is rotatably connected to the outer surface of the fixed rod three (48). The bolt (46) is threadedly connected to the lower side of the arched bracket (2). The lower end of the bolt (46) is rotatably connected to the upper end of the connecting block adjacent to the same side. The lower surface of the bracket (1) has grooves (49) on both the front and rear sides. The U-shaped blocks (47) are installed in conjunction with the grooves (49).

2. The magnetic resonance coil support for radiotherapy positioning according to claim 1, characterized in that: The adjustment mechanism (4) also includes a transmission rod (43), a gear (44) and a rack plate (45). The transmission rod (43) is rotatably connected to the upper inside of the arched bracket (2). Gears (44) are fixedly connected to both the left and right sides of the outer surface of the transmission rod (43). A rack plate (45) is fixedly connected to the upper surface of the slide rod (42). The rack plate (45) is meshed with the gear (44) on the same side.

3. The magnetic resonance coil support for radiotherapy positioning according to claim 1, characterized in that: The coil placement plate (3) is fixedly connected to the front and rear sides of the interior with a fixing rod (5). The outer surface of the fixing rod (5) is rotatably connected to a coil fixing plate (7). The outer surface of the fixing rod (5) is fitted with a torsion spring (6). The left end of the torsion spring (6) is fixedly connected to the outer surface of the fixing rod (5) on the same side, and the right end of the torsion spring (6) is fixedly connected to the lower surface of the coil fixing plate (7) on the same side.

4. A magnetic resonance coil stent for radiotherapy positioning according to claim 3, characterized in that: A movable block (8) is slidably connected between two fixed rods (5), and a fixed rod (9) is fixedly connected to the upper surface of the movable block (8).

5. A magnetic resonance coil stent for radiotherapy positioning according to claim 1, characterized in that: A locking seat (10) is fixedly connected to the left surface of the right-side fixed cylinder (41). A screw (12) is rotatably connected inside the locking seat (10). A slider (13) is threadedly connected to the lower side of the outer surface of the screw (12). The rear surface of the slider (13) is slidably connected to the inner wall of the locking seat (10). Top blocks (14) are slidably connected to both the left and right sides inside the locking seat (10).

6. A magnetic resonance coil stent for radiotherapy positioning according to claim 5, characterized in that: A knob (11) is fixedly connected to the upper surface of the screw (12).

7. A magnetic resonance coil support for radiotherapy positioning according to claim 1, characterized in that: A spring (15) is fixedly connected to the lower inside of the right-side fixed cylinder (41).

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