Three-dimensional adjusting support for image-guided radiotherapy linear accelerator
By designing a three-dimensional adjustable support for image-guided radiotherapy linear accelerators, the problem of insufficient respiratory stability in patients during deep inspiration was solved, thereby improving the precision and comfort of treatment.
Patent Information
- Application Number
- CN202422248174.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In image-guided radiotherapy, it is difficult for patients to maintain respiratory stability during deep inspiration, resulting in insufficient treatment precision and comfort.
Design a three-dimensional adjustment bracket for image-guided radiotherapy linear accelerators, including synchronously telescopic clamps, movable and rotatable guide rod sliders, and height-adjustable adjustment seats. Through multi-dimensional adjustment of the clamp holding the mobile phone and oxygen flow meter, it helps patients observe respiratory curves and adjust respiratory amplitude.
This allows patients to clearly observe and comfortably adjust their respiratory curves during treatment, improving the accuracy and comfort of the treatment.
Smart Images
Figure CN223716219U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical equipment technical field, concretely relates to a three -dimensional adjusting support for image -guided radiotherapy linear accelerator. BACKGROUND
[0002] Linear accelerator (Varian Linear Accelerator) is a kind of medical equipment for cancer radiotherapy. Linear accelerator can generate high-energy X-ray or electron beam, for targeting and killing cancer cells. These linear accelerators are usually equipped with advanced technologies, such as image-guided radiotherapy (IGRT), to ensure that the radiation can be accurately positioned to the tumor, while minimizing the damage to the surrounding healthy tissues. The traditional linear accelerator system is generally composed of main machine, treatment bed, operation console and some auxiliary systems, in the treatment process, the main machine is fixed on the ground to carry out patient radiotherapy, the patient lies horizontally on the treatment bed, and the bed plate of the treatment bed supports the horizontal and vertical movement of the patient.
[0003] DIBH (Deep Inspiration Breath Hold) technology is a kind of technology for radiotherapy, its core idea is to carry out treatment in the state of deep inspiration and breath holding of patient, to improve the accuracy of treatment. The main advantages of DIBH technology include: 1, reduce the dose of irradiation: by deep inspiration, the volume of tumor area (such as breast or lung) will increase, and the adjacent healthy tissue (such as heart or lung) will be relatively far away from the irradiation area, so as to reduce the dose of these healthy tissues. 2, improve the accuracy of treatment: deep breath makes the position of treatment area more stable, reduces the change of tumor position caused by breath. 3, reduce side effects: reduce the radiation dose of healthy tissue, so as to reduce the risk of side effects, such as heart disease or lung complications.
[0004] The implementation process of DIBH: 1, training and simulation: patients will receive deep inspiration training and simulation scanning to determine the best breath state and position. 2, treatment plan: the radiotherapy planner will develop a treatment plan according to the simulation results to ensure the accuracy of treatment in deep inspiration state. 3, treatment process: patients need to follow the guidance to perform deep inspiration and maintain breath holding state to complete the treatment in the treatment process. 4, DIBH technology improves the safety and effect of radiotherapy by improving breath management and treatment accuracy in treatment.
[0005] Therefore, in the process of cancer radiotherapy, especially in the treatment of breast cancer and lung cancer, a linear accelerator with image-guided radiotherapy (IGRT) is usually used. The patient lies horizontally on the treatment bed, the bed plate of the treatment bed supports the patient to move horizontally and vertically, the patient breathes according to the deep inspiration amplitude of the simulation positioning, the therapist performs the gating CBCT scan under the deep inspiration breath holding, and the patient's position is verified. During the implementation of radiotherapy, the patient's breathing action is monitored and recorded in real time through the respiratory gating system, the linear accelerator automatically triggers the radiation beam when the patient inhales deeply to reach the preset breathing range; when the patient leaves the breath holding state, the linear accelerator will automatically pause the treatment until the patient successfully breathes again and the radiation beam is emitted, ensuring the accuracy of radiotherapy.
[0006] Therefore, a suitable mobile phone holder is installed on the treatment bed, and communication with the patient can be realized through Tencent meeting or Tencent video on the mobile phone. The patient can observe his own breathing curve on the control computer outside the machine room, the oxygen flow count value corresponding to the breathing curve, and then adjust his own breathing amplitude, so as to quickly enter the most accurate quality state. Practical new type content
[0007] In order to solve the above technical problems, the utility model provides a three-dimensional adjusting support for image-guided radiotherapy linear accelerator with simple structure, guiding patient effective positioning breathing curve and reaching accurate treatment.
[0008] The utility model solves the technical problems above and the scheme is as follows:
[0009] The three-dimensional adjusting support for image-guided radiotherapy linear accelerator comprises a clasp that can be synchronously telescoped, a guide rod slider that can drive the clasp to move and rotate, and an adjusting seat that can adjust the height of the guide rod slider.
[0010] The guide rod slider comprises a smooth guide rod, a slider sleeved on the smooth guide rod, and an anti-friction sleeve arranged between the smooth guide rod and the slider, and the fixed end of the smooth guide rod is fixedly connected with the clasp.
[0011] The adjusting seat comprises a base and a lifting mechanism that can be lifted along the base, the top end of the lifting mechanism is fixedly connected with the slider, and the base is detachably connected with the treatment bed.
[0012] The three-dimensional adjusting support can clamp the mobile phone and the oxygen flow meter through the synchronous telescopic clamps during use, adjust the 360° rotation of the clamps through the rotation of the smooth guide rod, adjust the transverse position of the clamps through the pulling of the smooth guide rod, be detachably fixed on the edge of the treatment bed through the base, adjust the vertical position of the clamps through the lifting mechanism, and be in the appropriate position of the patient through the adjustment of the three-dimensional spatial position of the clamps, so that the patient can clearly and comfortably observe the mobile phone screen. The mobile phone is connected with the mobile phone outside the computer room, communicates through Tencent meeting or Tencent video, and the patient can observe the breathing curve of the control computer outside the computer room, adjusts the breathing amplitude according to the oxygen flow meter value corresponding to the breathing curve, and adjusts the breathing amplitude.
[0013] Further, the clamps include a left clamp plate, a right clamp plate, a screw rod with positive and negative threads, and a shell, the left clamp plate and the right clamp plate are located in the interior of the shell and are synchronously telescopic along the bottom surface of the shell, the insertion end of the screw rod is inserted into the smooth guide rod through the shell, the left clamp plate and the right clamp plate, and is rotationally connected with the smooth guide rod.
[0014] Further, the shell is a cuboid, the left side wall of the shell is provided with a left through hole, the right side wall is provided with a right through hole, the screw rod is inserted into the smooth guide rod through the left through hole, the left clamp plate, the right clamp plate and the right through hole; the front side wall of the shell is provided with a first guide rail, the rear side wall of the shell is provided with a second guide rail, the left clamp plate and the right clamp plate are synchronously opened or clamped along the first guide rail and the second guide rail.
[0015] Further, the fixed end of the smooth guide rod passes through the right through hole of the shell, and the fixed end is provided with a mounting hole inwardly;
[0016] Further, the lower end of the base is provided with a clamping opening matched with the thickness of the treatment bed, the clamping opening clamps the edge of the treatment bed, the top surface of the treatment bed abuts against the upper end of the clamping opening, and the screw passes through the lower end of the clamping opening and abuts against the bottom surface of the treatment bed.
[0017] Further, the upper end of the base is a hollow conduit, and the lower end of the hollow conduit is provided with an avoiding through hole;
[0018] The lifting mechanism includes a lifting rod, a screw rod, a first bevel gear, a second bevel gear and a handle, the lifting rod is an internally-threaded hollow rod, the top end of the screw rod is inserted into the internal thread of the lifting rod for connection, the lower end of the screw rod is provided with the first bevel gear, the second bevel gear is engaged with the first bevel gear at 90°, and the handle is fixedly connected with the second bevel gear through the avoiding through hole.
[0019] The inner wall of the hollow conduit and the outer wall of the lifting rod are respectively provided with guiding grooves and guiding protrusions matched with each other.
[0020] Further, the handheld end of the smooth guide rod is provided with a first rotating handle facilitating the rotation of the smooth guide rod.
[0021] Further, the non-insertion end of the lead screw is provided with a second rotating handle for facilitating rotation of the lead screw.
[0022] Further, the two screws are provided with fixed discs at the top ends thereof for facilitating clamping.
[0023] Further, the outer circumferential surface of the anti-friction sleeve is provided with a strip-shaped protrusion for preventing rotation of the anti-friction sleeve, and the through hole of the sliding block is provided with a strip-shaped groove for accommodating the strip-shaped protrusion. The design ensures that the smooth guide rod can be pulled horizontally and transversely, and the smooth guide rod cannot move relative to the sliding block after the position is determined. When the smooth guide rod rotates relative to the sliding block, the anti-friction sleeve cannot rotate relative to the sliding block along with the smooth guide rod.
[0024] During use, the three-dimensional adjusting support is first clamped to the edge of the treatment bed through the clamping opening, the screw is screwed into the clamping opening through the lower end of the clamping opening, and the three-dimensional adjusting support is fixed on the treatment bed. Then, the handle is rotated to drive the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate, the first bevel gear drives the screw to rotate, the screw drives the lifting rod to ascend or descend, the lifting rod drives the guide rail sliding block to ascend or descend, thereby driving the clamp to ascend or descend, and finally adjusting the mobile phone to ascend or descend. The smooth guide rod of the guide rail sliding block can be pulled and rotated relative to the sliding block. When the smooth guide rod is pulled, the horizontal and transverse position of the clamp is adjusted, thereby adjusting the horizontal and transverse position of the mobile phone. When the smooth guide rod is rotated, the clamp is adjusted to rotate by 360 degrees, thereby adjusting the mobile phone to rotate by 360 degrees. After the three-dimensional adjustment is completed, the patient can watch the mobile phone screen at a more comfortable angle, thereby seeing the breathing curve of the patient, adjusting the depth and time of the patient's breathing, and achieving the purpose of precise treatment.
[0025] Compared with the prior art, the three-dimensional adjusting support for the image-guided radiotherapy linear accelerator has the following advantages:
[0026] 1. The three-dimensional adjusting support for the image-guided radiotherapy linear accelerator can realize 360-degree rotation, horizontal and transverse adjustment, and vertical height adjustment of the clamp, and achieves the purpose of three-dimensional adjustment of the angle of the mobile phone.
[0027] 2. The three-dimensional adjusting support for the image-guided radiotherapy linear accelerator is designed according to the problems encountered in actual clinical practice, is humanized, simple and convenient, and low in cost.
[0028] 3. The three-dimensional adjusting support for the image-guided radiotherapy linear accelerator is simple to replace, does not need to be purchased together with the image-guided radiotherapy linear accelerator, and saves cost.
[0029] The terms used herein, such as “inner,” “outer,” “upper,” and “lower,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the treatment bed of the three-dimensional adjustable support and image-guided radiotherapy linear accelerator of this utility model.
[0031] Figure 2 yes Figure 1 A schematic diagram of the structure of the three-dimensional adjustment bracket.
[0032] Figure 3 yes Figure 2 A schematic diagram of the base structure.
[0033] Figure 4 yes Figure 2 A schematic diagram of the lifting mechanism.
[0034] Figure 5 yes Figure 2 Exploded view of the clamp and guide rod slider.
[0035] Figure 6 yes Figure 2 An exploded view of the middle clip.
[0036] Figure 7 yes Figure 3 A partial structural diagram.
[0037] Figure 8 yes Figure 4 A partial structural diagram. Detailed Implementation
[0038] 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.
[0039] like Figure 1 , Figure 2 As shown, the three-dimensional adjustment bracket 10 for an image-guided radiotherapy linear accelerator includes a synchronously extendable clamp 1, a guide rod slider 2 that can move and rotate the clamp 1, and an adjustment seat 3 that can adjust the height of the guide rod slider 2.
[0040] As shown in FIG. Figure 2 , Figure 5 , Figure 6 The guide rod slider 2 includes a smooth guide rod 21, a slider 22 sleeved on the smooth guide rod 21, an anti-friction sleeve 23 arranged between the smooth guide rod 21 and the slider 22, and a clasp 1 fixed to the fixed end of the smooth guide rod 21.
[0041] As shown in FIG. Figure 1 , Figure 2 , Figure 3 The adjusting seat 3 includes a base 31 and a lifting mechanism 32 that can be lifted along the base 31, the top end of the lifting mechanism 32 is fixed to the slider 22, and the base 31 is detachably connected to the treatment bed 20.
[0042] As shown in FIG. Figure 1 , Figure 2 The three-dimensional adjusting support 10 can hold a mobile phone (not shown in the figure) and an oxygen flow meter (not shown in the figure) through the synchronously telescopic clasp 1 during use, adjust the 360° rotation of the clasp 1 through the rotation of the smooth guide rod 21, adjust the lateral position of the clasp 1 through the pulling of the smooth guide rod 21, adjust the vertical position of the clasp 1 through the detachable fixing of the base 31 to the edge of the treatment bed 20, and adjust the vertical position of the clasp 1 through the lifting mechanism 32. After adjusting the three-dimensional spatial position as described above, the clasp 1 can be in a suitable position of the patient, so that the patient can clearly and comfortably observe the mobile phone screen. The mobile phone is connected to the mobile phone outside the computer room, and the patient can observe the breathing curve of the control computer outside the computer room through Tencent meeting or Tencent video communication. The patient can adjust the breathing amplitude by inhaling high-flow oxygen corresponding to the oxygen flow meter value of the breathing curve.
[0043] As shown in FIG. Figure 5 , Figure 6 The clasp 1 includes a left clamping plate 11, a left clamping plate 12, a screw rod 13 with positive and negative threads, and a shell 14. The left clamping plate 11 and the left clamping plate 12 are located inside the shell 14 and synchronously telescopic along the bottom surface of the shell 14. The insertion end of the screw rod 13 penetrates the shell 14, the left clamping plate 11, the left clamping plate 12, and the smooth guide rod 21, and is rotationally connected with the smooth guide rod 21.
[0044] As shown in FIG. Figure 5 , Figure 6 The shell 14 is a cuboid. A left through hole 18 is formed in the left side wall of the shell 14, and a right through hole 19 is formed in the right side wall of the shell 14. The screw rod 13 penetrates the left through hole 18, the left clamping plate 11, the left clamping plate 12, and the right through hole 19, and is inserted into the smooth guide rod 21. A first guide rail 15 is installed on the front side wall of the shell 14, and a second guide rail 16 is installed on the rear side wall of the shell 14. The left clamping plate 11 and the left clamping plate 12 synchronously open or clamp along the first guide rail 15 and the second guide rail 16.
[0045] AsFigure 5 、 Figure 6 As shown in the figure, the fixed end of the smooth guide rod 21 passes through the right through hole 19 of the shell 14, and the fixed end is provided with a mounting hole 28, and the insertion end of the screw rod 13 is inserted into the mounting hole 28.
[0046] As shown in the figure, Figure 1 、 Figure 2 、 Figure 3 As shown in the figure, the lower end of the base 31 is provided with a clamping opening 33 matched with the thickness of the treatment bed 20, the clamping opening 33 clamps the edge of the treatment bed 20, the top surface of the treatment bed 20 abuts against the upper end of the clamping opening 33, and the screw 34 passes through the lower end of the clamping opening 33 and abuts against the bottom surface of the treatment bed 20.
[0047] As shown in the figure, Figure 3 、 Figure 7 As shown in the figure, the upper end of the base 31 is a hollow conduit 8, and the lower end of the hollow conduit 8 is provided with an avoiding through hole 35.
[0048] As shown in the figure, Figure 4 、 Figure 8 As shown in the figure, the lifting mechanism 32 includes a lifting rod 36, a screw rod 37, a first bevel gear 38, a second bevel gear 39, and a handle 5, the lifting rod 36 is an internally threaded hollow rod, the top end of the screw rod 37 is inserted into the internal thread of the lifting rod 36 for connection, the lower end of the screw rod 37 is sleeved with the first bevel gear 38, the second bevel gear 39 is engaged with the first bevel gear 38 at 90°, and the handle 5 is fixedly connected with the second bevel gear 39 through the avoiding through hole 35.
[0049] As shown in the figure, Figure 5 As shown in the figure, the inner wall of the hollow conduit 8 and the outer wall of the lifting rod 36 are respectively provided with guiding grooves 81 and guiding protrusions (not shown in the figure, blocked) matched with each other.
[0050] As shown in the figure, Figure 5 As shown in the figure, the hand-held end of the smooth guide rod 21 is provided with a first rotating handle 27 for facilitating the rotation of the smooth guide rod 21.
[0051] As shown in the figure, Figure 5 As shown in the figure, the non-insertion end of the screw rod 13 is provided with a second rotating handle 17 for facilitating the rotation of the screw rod 13.
[0052] As shown in the figure, Figure 3 、 Figure 7 As shown in the figure, the screw 34 is two, and the top end of the screw 34 is provided with a fixing disc 6 for facilitating clamping.
[0053] As shown in the figure, Figure 5As shown, the outer circumferential surface of the anti-friction sleeve 23 has a strip-shaped protrusion 23 for preventing rotation, and the through hole 25 of the sliding block 22 has a strip-shaped recess 26 for accommodating the strip-shaped protrusion 23. The design ensures that the smooth guide rod 21 can be pulled horizontally and transversely, and after being positioned, the smooth guide rod 21 cannot move relative to the sliding block 22, and when the smooth guide rod 21 rotates relative to the sliding block 22, the anti-friction sleeve 23 cannot rotate relative to the sliding block 22 along with the smooth guide rod 21.
[0054] As shown in Figure 2 , Figure 4 , Figure 5 , Figure 8 In use, first, the three-dimensional adjusting support 10 is clamped to the edge of the treatment bed 20 through the clamping opening 33, the screw 34 is screwed into the clamping opening 33 through the lower end of the clamping opening 33, and the three-dimensional adjusting support 10 is fixed on the treatment bed 20, then the handle 5 is rotated to drive the second bevel gear 39 to rotate, the second bevel gear 39 drives the first bevel gear 38 to rotate, the first bevel gear 38 drives the screw rod 37 to rotate, the screw rod 37 drives the lifting rod 36 to ascend or descend, the lifting rod 36 drives the guide rail sliding block 2 to ascend or descend, thereby driving the clamp 1 to ascend or descend. The smooth guide rod 21 of the guide rail sliding block 2 can be pulled and rotated relative to the sliding block 22, when the smooth guide rod 21 is pulled, the horizontal and transverse position of the clamp 1 is adjusted, and when the smooth guide rod 21 is rotated, the 360° rotation of the clamp 1 is adjusted. After the three-dimensional adjustment is completed, the patient can watch the mobile phone screen at a more comfortable angle, thereby seeing the breathing curve of the patient, adjusting the depth and time of the patient's breathing, and achieving the purpose of precise treatment.
[0055] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements are also regarded as the protection scope of the present application.
Claims
1. A three-dimensional adjustment stand for an image-guided radiotherapy linear accelerator, characterized in that: The clip can be synchronously extended and retracted, the guide rod slider can drive the clip to move and rotate, and the adjusting seat can adjust the height of the guide rod slider; The guide rod slider comprises a smooth guide rod, a slider sleeved on the smooth guide rod, and an anti-friction sleeve arranged between the smooth guide rod and the slider, and the fixed end of the smooth guide rod is fixedly connected with the clip; The adjusting seat comprises a base and a lifting mechanism which can be lifted along the base, the top end of the lifting mechanism is fixedly connected with the slider, and the base is detachably connected with the treatment bed.
2. The three-dimensional adjustment stand for an image-guided radiotherapy linear accelerator according to claim 1, characterized in that: The clip comprises a left clamping plate, a right clamping plate, a screw rod with positive and reverse threads, and a shell, the left clamping plate and the right clamping plate are located inside the shell and synchronously extend and retract along the bottom surface of the shell, the insertion end of the screw rod penetrates through the shell, the left clamping plate, the right clamping plate and the smooth guide rod and is rotationally connected with the smooth guide rod.
3. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 2, wherein: The shell is a cuboid, the left side wall of the shell is provided with a left through hole, the right side wall is provided with a right through hole, the screw rod penetrates through the left through hole, the left clamping plate, the right clamping plate and the right through hole and inserts into the smooth guide rod, the front side wall of the shell is provided with a first guide rail, the rear side wall of the shell is provided with a second guide rail, and the left clamping plate and the right clamping plate synchronously open or clamp along the first guide rail and the second guide rail.
4. The three-dimensional adjustment stand for an image-guided radiotherapy linear accelerator according to claim 3, characterized in that: The fixed end of the smooth guide rod penetrates through the right through hole of the shell, and the fixed end is provided with a mounting hole inwardly.
5. The three-dimensional adjustment stand for an image-guided radiotherapy linear accelerator according to claim 1, characterized in that: The lower end of the base is provided with a clamping opening matched with the thickness of the treatment bed, the clamping opening clamps the edge of the treatment bed, the top surface of the treatment bed abuts against the upper end of the clamping opening, and the screw penetrates through the lower end of the clamping opening and abuts against the bottom surface of the treatment bed.
6. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 1, wherein: The upper end of the base is a hollow conduit, and the lower end of the hollow conduit is provided with an avoiding through hole; The lifting mechanism comprises a lifting rod, a screw rod, a first bevel gear, a second bevel gear and a handle, the lifting rod is an internally-threaded hollow rod, the top end of the screw rod is inserted into the internal thread of the lifting rod for screw connection, the lower end of the screw rod is sleeved with the first bevel gear, the second bevel gear is engaged with the first bevel gear at an angle of 90°, and the handle is fixedly connected with the second bevel gear through the avoiding through hole. The inner wall of the hollow conduit and the outer wall of the lifting rod are respectively provided with a guide recess and a guide protrusion matched with each other.
7. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 1, wherein: The hand-held end of the smooth guide rod is provided with a first rotating handle facilitating rotation of the smooth guide rod.
8. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 2, wherein: The non-insertion end of the screw rod is provided with a second rotating handle facilitating rotation of the screw rod.
9. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 5, wherein: The screw is provided with two fixed discs facilitating clamping at the top end of the screw.
10. The three-dimensional adjustment stand for an image guided radiation therapy linear accelerator of claim 1, wherein: The outer circumferential surface of the anti-friction sleeve is provided with a strip-shaped protrusion preventing rotation of the anti-friction sleeve, and the through hole of the slider is provided with a strip-shaped recess accommodating the strip-shaped protrusion.