Radiotherapy body position fixing device with gradient abdominal pressure function

Abstract

The invention discloses a radiotherapy body position fixing device with a gradient abdominal pressure function, and relates to the field of radiotherapy auxiliary equipment.The radiotherapy body position fixing device comprises a main body frame, the main body frame is integrally made of a carbon fiber composite material and gives consideration to X-ray penetrability and mechanical stability, and titanium alloy insertion strips are fixedly installed at the edges of the main body frame; the main body frames are connected through a telescopic belt, the top of each main body frame is fixedly provided with an indication block, a scale plate is installed below each indication block and movably connected with the indication block, and each scale plate is located on one side of the corresponding main body frame; according to the radiotherapy body position fixing device with the gradient abdominal pressure function, through the arrangement of the abdominal pressure air bag, the silica gel cushion, the main body frame, the scale plate and the indication block, the abdominal pressure can be flexibly adjusted according to the body type and radiotherapy requirements of a patient, personalized body position fixing is achieved, the pressure distribution is more uniform through the design of the abdominal pressure air bag, and the radiotherapy effect is better. And the accuracy of radiotherapy and the comfort level of a patient are effectively improved.

Description

Technical Field

[0001] This invention relates to radiotherapy auxiliary equipment technology, specifically to a radiotherapy positioning device with gradient abdominal pressure function. Background Technology

[0002] In the field of radiotherapy, especially for abdominal / pelvic tumors such as liver cancer, pancreatic cancer, and respiratory system tumors, the stability of the patient's position directly determines the accuracy of the radiotherapy dose. This is a crucial prerequisite for ensuring the effectiveness of radiotherapy and minimizing damage to normal tissues. Radiotherapy positioning devices, as core auxiliary equipment in radiotherapy, play a vital role in providing patients with a stable treatment position, preventing target displacement due to minor body movements or respiratory motions, and ensuring that radiotherapy rays are precisely focused on the tumor lesion. Currently, various radiotherapy positioning devices are used clinically, achieving basic positioning through frame support and constraint fixation, providing initial assurance for the smooth implementation of radiotherapy. With the development of precision radiotherapy technologies such as 4D-RT, higher demands are placed on the adaptability, pressure control flexibility, and compatibility with imaging examinations of positioning devices. These devices need to be adaptable to special positions such as anti-tipping lateral decubitus positions, while also meeting the positional stability requirements during CT / MRI and other imaging examinations, providing a more reliable foundation for precise radiotherapy.

[0003] However, existing radiotherapy positioning devices with gradient intra-abdominal pressure function have the following disadvantages:

[0004] (1) Currently, existing radiotherapy positioning devices are passively positioned and have uneven pressure distribution. During radiotherapy, the patient's position needs to be precisely fixed to ensure that the radiation accurately irradiates the tumor site. However, existing devices mostly rely on the patient to maintain the position, which is a passive positioning method. It is difficult to maintain a precise position throughout the long treatment. At the same time, the problem of uneven pressure distribution is prominent. Excessive pressure in some areas can easily cause patient discomfort or even skin damage, while insufficient pressure in some areas cannot effectively fix the position, affecting the radiotherapy effect and the patient's treatment experience.

[0005] (2) At present, the existing abdominal pressure structure is cumbersome and inefficient in the disassembly and assembly process, and its monitoring accuracy is limited by sensor technology and data processing capabilities, which has obvious technical defects. It needs to be improved to enhance the actual application effect. Summary of the Invention

[0006] The purpose of this invention is to provide a radiotherapy positioning device with gradient abdominal pressure function to solve the problems of passive positioning and uneven pressure distribution in existing radiotherapy positioning devices.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a radiotherapy positioning fixation device with gradient abdominal pressure function, comprising a main frame, wherein the main frame is made entirely of carbon fiber composite material, taking into account both X-ray penetration and mechanical stability; titanium alloy inserts are fixedly installed at the edges of the main frame, and the main frames are connected by a telescopic strap; an indicator block is fixedly installed at the top of the main frame, and a scale plate is installed below the indicator block and movably connected thereto; the scale plate is located on one side of the main frame, and the outer surface of the scale plate has multiple sets of scale values; an abdominal pressure component is installed at the bottom of the telescopic strap, and the abdominal pressure component is snapped into the interior of the main frame; the abdominal pressure component includes an abdominal pressure plate and an abdominal pressure airbag; the abdominal pressure airbag is evenly distributed on the anterior and lateral abdominal walls of the patient, adapting to the anti-tipping lateral decubitus position support requirements.

[0008] Furthermore, an air inflator and an air intake block are respectively installed on one side of the abdominal pressure airbag. Both the air inflator and the air intake block are connected to the inside of the abdominal pressure airbag through air passages. A pressure sensor is installed inside the abdominal pressure airbag, and a control panel is installed at one end of the pressure sensor.

[0009] Furthermore, the outer surface of the abdominal pressure plate is inlaid with a transparent observation window, which is made of medical-grade acrylic material.

[0010] Furthermore, the transparent observation window is located directly above the abdominal pressure airbag, which facilitates timely observation of the pressure distribution of the abdominal pressure airbag.

[0011] Furthermore, a tension band is fixedly installed on one side of the abdominal pressure plate. The tension band is made of elastic medical webbing material, and a movable plate is fixedly installed at one end of the tension band.

[0012] Furthermore, a snap-fit ​​block is fixedly installed on the top of the movable plate. The snap-fit ​​block has an L-shaped structure, and one end of the snap-fit ​​block extends into the slot preset in the main frame.

[0013] An adjustment plate is installed on the top of the main frame, and a telescopic spring is fixedly installed on the bottom of the adjustment plate, with one end of the telescopic spring fixedly connected to the inside of the main frame.

[0014] One end of the adjustment plate passes through the main frame and extends into the limiting hole of the snap-fit ​​block. By adjusting the adjustment plate, the snap-fit ​​block can be locked or unlocked from the main frame.

[0015] The outer surface of the abdominal pressure airbag is covered with a silicone pad, which is detachably bonded to the abdominal pressure airbag.

[0016] An arc-shaped plate is fixedly installed at the bottom of the movable plate. The inner side of the arc-shaped plate is provided with anti-slip texture, and one side of the arc-shaped plate is engaged with the outer side of the titanium alloy insert.

[0017] Compared with existing technologies, this invention provides a radiotherapy positioning device with gradient abdominal pressure function. Through the arrangement of an abdominal pressure balloon, silicone pad, main frame, scale plate, and indicator blocks, it can flexibly adjust the abdominal pressure according to the patient's body shape and radiotherapy needs, achieving personalized positioning. The design of the abdominal pressure balloon makes the pressure distribution more uniform, effectively improving the accuracy of radiotherapy and patient comfort. The silicone pad not only enhances the device's softness but also reduces friction with the patient's skin, further improving the user experience. The cooperation between the main frame, snap-fit ​​blocks, and adjustment plate makes the assembly and disassembly of the device simple and quick, facilitating operation by medical staff. The scale plate and indicator blocks facilitate precise control and monitoring of abdominal pressure by medical staff.

[0018] The adjustable plate, telescopic spring, locking block, and movable plate allow the movable plate to slide and position flexibly on the main frame, thus meeting the positional fixation needs of patients of different body types. The design of the telescopic spring gives the adjustable plate a certain elastic buffering capacity, ensuring the fixation effect while avoiding discomfort caused to the patient due to excessive pressure. The tight cooperation between the locking block and the movable plate further enhances the stability and reliability of the device, effectively preventing loosening or displacement during use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall side view structure provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the abdominal pressure plate provided in an embodiment of the present invention;

[0023] Figure 4 This is a top view structural diagram provided for an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the telescopic spring structure provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the main frame provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Main frame; 2. Titanium alloy insert; 3. Telescopic belt; 4. Indicator block; 5. Scale plate; 6. Abdominal pressure assembly; 61. Abdominal pressure plate; 62. Abdominal pressure airbag; 7. Transparent observation window; 8. Tension belt; 9. Moving plate; 10. Clip block; 11. Adjustment plate; 12. Telescopic spring; 13. Silicone pad; 14. Curved plate. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figures 1 to 6 This invention provides a technical solution: a radiotherapy positioning device with gradient abdominal pressure function, comprising a main frame 1, the main frame 1 being entirely made of carbon fiber composite material, taking into account both X-ray penetration and mechanical stability; titanium alloy strips 2 being fixedly installed at the edges of the main frame 1; and the main frames 1 being connected by a telescopic strap 3; an indicator block 4 being fixedly installed at the top of the main frame 1; and a scale plate 5 being installed below the indicator block 4 and movably connected thereto; the scale plate 5 being located on one side of the main frame 1; and multiple sets of scale values ​​being provided on the outer surface of the scale plate 5; and an abdominal pressure component 6 being installed at the bottom of the telescopic strap 3, and the abdominal pressure component 6 being snapped into the inner part of the main frame 1. The abdominal pressure assembly 6 includes an abdominal pressure plate 61 and an abdominal pressure airbag 62. The abdominal pressure airbag 62 is evenly distributed on the anterior and lateral abdominal walls of the patient, adapting to the anti-tipping lateral decubitus position support requirements. Through the setting of the telescopic belt 3, it can be flexibly adjusted according to the patient's body shape and radiotherapy needs, ensuring that the abdominal pressure assembly 6 can be accurately positioned in the patient's abdomen. This design not only improves the applicability of the device, but also enables the patient to maintain a more comfortable position during radiotherapy, reducing radiotherapy errors caused by improper positioning. At the same time, the material of the telescopic belt 3 is also carefully selected to ensure that it has good elasticity and durability, and can be used for a long time without being easily deformed or damaged.

[0030] An air inflator and an air inlet are installed on one side of the abdominal pressure cuff 62. Both the air inflator and the air inlet are connected to the inside of the abdominal pressure cuff 62 through airways. A pressure sensor is installed inside the abdominal pressure cuff 62, and a control panel is installed at one end of the pressure sensor. Through the settings of the abdominal pressure cuff 62, a uniform and adjustable pressure can be applied to the abdomen according to the patient's actual needs. This gradient abdominal pressure design helps the patient maintain a stable position during radiotherapy and reduces positional deviation caused by breathing or slight body movements. The air inflator design allows medical staff to easily increase the pressure inside the abdominal pressure cuff 62 manually, while the air inlet ensures that the pressure can be quickly released when needed to adjust to the most suitable abdominal pressure state for the patient.

[0031] The outer surface of the abdominal pressure plate 61 is inlaid with a transparent observation window 7, which is made of medical-grade acrylic material. Through the setting of the transparent observation window 7, medical staff can clearly observe the condition of the patient's abdomen, understand the patient's condition and changes in body position in a timely manner, and make corresponding adjustments. At the same time, the medical-grade acrylic material has the characteristics of high transparency, good chemical corrosion resistance and easy processing, which can meet the requirements of use in the medical environment, ensure the clarity and durability of the transparent observation window 7, and provide a reliable guarantee for the smooth progress of the radiotherapy process.

[0032] The transparent observation window 7 is located directly above the abdominal pressure airbag 62, which facilitates timely observation of the pressure distribution of the abdominal pressure airbag 62;

[0033] A tension band 8 is fixedly installed on one side of the abdominal pressure plate 61. The tension band 8 is made of elastic medical webbing material, and a movable plate 9 is fixedly installed at one end of the tension band 8. Through the setting of the tension band 8, medical staff can flexibly adjust the position of the movable plate 9 according to the patient's body shape and comfort needs, thereby changing the tightness of the tension band 8. This design not only ensures the stability of the patient's position during radiotherapy, but also greatly improves the patient's comfort and reduces discomfort caused by improper positioning. At the same time, the elastic medical webbing material has good elasticity and durability, and can withstand multiple stretching and adjustments, ensuring the long-term use effect of the tension band 8.

[0034] A snap-fit ​​block 10 is fixedly installed on the top of the movable plate 9. The snap-fit ​​block 10 has an L-shaped structure, and one end of the snap-fit ​​block 10 extends into the pre-set slot of the main frame 1. With the snap-fit ​​block 10, medical staff can easily and firmly fix the movable plate 9 in the pre-set position of the main frame 1. This L-shaped snap-fit ​​block 10 and slot design not only enhances the stability of the movable plate 9, but also facilitates quick installation and disassembly, improving the efficiency of radiotherapy preparation. At the same time, this design also ensures that the movable plate 9 will not fall off accidentally due to patient movement or external factors during radiotherapy, further ensuring the accuracy and safety of radiotherapy.

[0035] An adjustment plate 11 is installed on the top of the main frame 1. A telescopic spring 12 is fixedly installed at the bottom of the adjustment plate 11, and one end of the telescopic spring 12 is fixedly connected to the inside of the main frame 1. By setting the adjustment plate 11, the connection relationship between the snap block 10 and the main frame 1 can be changed by its own movement, and it is convenient for the staff to quickly disassemble the abdominal pressure component 6.

[0036] One end of the adjusting plate 11 passes through the main frame 1 and extends into the limiting hole of the snap-fit ​​block 10. By adjusting the adjusting plate 11, the snap-fit ​​block 10 and the main frame 1 can be locked or unlocked.

[0037] The outer surface of the abdominal pressure cuff 62 is covered with a silicone pad 13. The silicone pad 13 is detachably bonded to the abdominal pressure cuff 62. The silicone pad 13 not only improves the patient's comfort during use and reduces discomfort caused by prolonged pressure, but also effectively prevents friction damage that may be caused by direct contact between the abdominal pressure cuff 62 and the patient's skin. At the same time, the detachable design of the silicone pad 13 facilitates cleaning and replacement, ensuring the hygiene and durability of the device and further improving the overall performance of the radiotherapy positioning fixation device.

[0038] An arc-shaped plate 14 is fixedly installed at the bottom of the movable plate 9. The inner side of the arc-shaped plate 14 is provided with anti-slip texture, and one side of the arc-shaped plate 14 is engaged with the outer side of the titanium alloy insert 2.

[0039] The working steps of the device in this invention are as follows:

[0040] The first step: Medical staff first complete a full-component status check of the device, confirming that the main frame 1 is not deformed, the titanium alloy insert 2 is firmly installed, and that the abdominal pressure airbag 62 in the abdominal pressure assembly 6 is undamaged, the silicone pad 13 is stably adhered to the airbag surface and is clean and free of stains. Simultaneously, they check the clarity of the transparent observation window 7, verify that the moving connection of the core components of the high-precision scale system (indicator block 4 and scale plate 5) is smooth and the scale values ​​are clearly identifiable, and that the elastic reset function of the adjustment plate 11 and the telescopic spring 12 is normal. They focus on verifying that the pressure sensor built into the abdominal pressure airbag 62 (model: PT124G-111) is suitable for medical environments, has a measurement range of 0-0.6MPa, and an accuracy of ±0.1%FS, and that the matching control panel (model: PLC-S7-1200) supports real-time display of multiple parameters and data linkage and is functioning normally. Then, based on the patient's radiotherapy requirements for anti-tipping lateral recumbency, the device is adjusted through the main frame... The telescopic straps 3 between the frames 1 are used to adjust the frame spacing and initially adapt to the patient's body shape, ensuring that the abdominal pressure component 6 can accurately correspond to the patient's abdominal area. At the same time, the linkage debugging of the pressure sensor and the control panel is completed to ensure that the pressure data collected by the sensor can be transmitted to the control panel in real time, which is to prepare for subsequent adjustment of abdominal pressure by inflation / deflation and to achieve closed-loop pressure control. The patient is guided to lie in the designated area of ​​the device in an anti-tipping lateral position. The patient's posture is adjusted so that the anterior abdominal wall, lateral abdominal wall and abdominal pressure airbag 62 of the abdominal pressure component 6 are precisely aligned. The medical staff pulls the moving plate 9 and uses the elasticity of the stretching straps 8 to adjust the fit of the abdominal pressure plate 61, ensuring that the silicone soft pad 13 on the outside of the abdominal pressure airbag 62 gently fits the patient's skin. At the same time, the arc plate 14 at the bottom of the moving plate 9 is aligned with the titanium alloy inlay strip 2 on the edge of the main frame 1, which lays the positioning foundation for subsequent snap-fit ​​fixation and avoids initial positional deviation.

[0041] Step 2: Attach the abdominal pressure assembly 6 to the inside of the main frame 1. Push the moving plate 9 so that the L-shaped locking block 10 at the top is embedded in the pre-set slot of the main frame 1. Press the adjusting plate 11; the elastic contraction of the telescopic spring 12 causes one end of the adjusting plate 11 to pass through the main frame 1 and insert into the limiting hole of the locking block 10, completing the locking and fixing of the locking block 10 to the main frame 1. At this time, the anti-slip texture on the inner side of the arc plate 14 and the outer side of the titanium alloy insert 2 are tightly engaged, further enhancing the anti-tipping stability when the patient is lying on their side. At the same time, the tension band 8 maintains appropriate tightness, balancing the fixation of the body position and the patient's comfort. Manually inflate the abdominal pressure airbag 62 using the air inflator on one side. Monitor the expansion range of the abdominal pressure airbag 62, i.e., the extent of abdominal bulging, using the scale plate 5 and the indicator block 4. Simultaneously observe the real-time pressure data fed back by the pressure sensor PT124G-111 on the control panel: PLC-S7-1200. Based on the patient's condition... The device adjusts abdominal pressure bidirectionally through inflation and deflation to achieve a gradient abdominal pressure effect of "high pressure in the center and low pressure at the edges." During inflation, medical staff can observe the pressure distribution of the abdominal pressure airbag 62 in real time through the transparent observation window 7 on the abdominal pressure plate 61. If the pressure sensor feedback data is too high, some gas is quickly released through the air intake block until the abdominal pressure is adjusted to the most suitable state for the patient. With the help of the multi-dimensional positioning and pressure synchronous monitoring mode of "scale monitoring + pressure sensor feedback + control panel adjustment", the pressure parameters are accurately controlled to reduce the positional deviation caused by breathing or body micro-movements. After radiotherapy, the control panel and pressure sensor linkage system are turned off first, and then the adjustment plate 11 is pressed to reset the telescopic spring 12, which drives the adjustment plate 11 to disengage from the limiting hole of the locking block 10 and release the locking state. The moving plate 9 is pulled to make the locking block 10 exit the slot of the main frame 1, and the abdominal pressure component 6 is removed to guide the patient to leave the device smoothly. Then, the silicone pad 13 was removed for cleaning and disinfection, the abdominal pressure airbag 62, the transparent observation window 7 and the pressure sensor probe were cleaned, and after checking that no parts were damaged, they were put back in place. At the same time, the telescopic strap 3 was loosened to reset the main frame 1, preparing it for the next use.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A radiotherapy positioning device with gradient abdominal pressure function, comprising a main frame (1), characterized in that, The main frame (1) is made of carbon fiber composite material and takes into account both X-ray penetration and mechanical stability. Titanium alloy strips (2) are fixedly installed at the edge of the main frame (1), and the main frames (1) are connected by a telescopic belt (3). An indicator block (4) is fixedly installed on the top of the main frame (1), and a scale plate (5) is installed below the indicator block (4) and is movably connected to it. The scale plate (5) is located on one side of the main frame (1). The outer surface of the scale plate (5) is provided with multiple sets of scale values. An abdominal pressure component (6) is installed at the bottom of the telescopic belt (3), and the abdominal pressure component (6) is snapped into the inside of the main frame (1). The abdominal pressure component (6) includes an abdominal pressure plate (61) and an abdominal pressure airbag (62). The abdominal pressure airbag (62) is evenly distributed on the anterior and lateral abdominal walls of the patient to meet the requirements of anti-overturning lateral decubitus position support.

2. The radiotherapy positioning device with gradient abdominal pressure function according to claim 1, characterized in that, An air inflator and an air intake block are installed on one side of the abdominal pressure airbag (62). Both the air inflator and the air intake block are connected to the inside of the abdominal pressure airbag (62) through air passages. A pressure sensor is installed inside the abdominal pressure airbag (62), and a control panel is installed at one end of the pressure sensor.

3. The radiotherapy positioning device with gradient abdominal pressure function according to claim 1, characterized in that, The outer surface of the abdominal pressure plate (61) is inlaid with a transparent observation window (7), which is made of medical acrylic material.

4. The radiotherapy positioning device with gradient abdominal pressure function according to claim 3, characterized in that, The transparent observation window (7) is located directly above the abdominal pressure airbag (62), which facilitates timely observation of the pressure distribution of the abdominal pressure airbag (62).

5. The radiotherapy positioning device with gradient abdominal pressure function according to claim 1, characterized in that, A tension band (8) is fixedly installed on one side of the abdominal pressure plate (61). The tension band (8) is made of elastic medical webbing material, and a movable plate (9) is fixedly installed on one end of the tension band (8).

6. A radiotherapy positioning device with gradient abdominal pressure function according to claim 5, characterized in that, A snap-fit ​​block (10) is fixedly installed on the top of the movable plate (9). The snap-fit ​​block (10) has an L-shaped structure, and one end of the snap-fit ​​block (10) extends into the slot of the main frame (1).

7. A radiotherapy positioning device with gradient abdominal pressure function according to claim 1, characterized in that, An adjustment plate (11) is installed on the top of the main frame (1), and a telescopic spring (12) is fixedly installed at the bottom of the adjustment plate (11), with one end of the telescopic spring (12) fixedly connected to the inside of the main frame (1).

8. A radiotherapy positioning device with gradient abdominal pressure function according to claim 7, characterized in that, One end of the adjustment plate (11) passes through the main frame (1) and extends into the limiting hole of the snap-fit ​​block (10). By adjusting the adjustment plate (11), the snap-fit ​​block (10) and the main frame (1) can be locked or unlocked.

9. A radiotherapy positioning device with gradient abdominal pressure function according to claim 1, characterized in that, The outer surface of the abdominal pressure airbag (62) is covered with a silicone pad (13), and the silicone pad (13) is detachably bonded to the abdominal pressure airbag (62).

10. A radiotherapy positioning device with gradient abdominal pressure function according to claim 5, characterized in that, The bottom of the movable plate (9) is fixedly installed with an arc plate (14). The inner side of the arc plate (14) is provided with anti-slip texture, and one side of the arc plate (14) is engaged with the outer side of the titanium alloy insert (2).

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