Multifunctional tumor radiotherapy intelligent positioning device

Abstract

The invention belongs to the field of medical treatment, and provides a multifunctional tumor radiotherapy intelligent positioning device which comprises a bed board, a plurality of positioning units are arranged on the bed board, each positioning unit is connected with a control module, and each positioning unit comprises a shell, a positioning rod, an adjusting assembly and a detection unit; the adjusting assembly is located in the shell, the positioning rod is inserted into the shell and connected with the adjusting assembly, the detection unit is located in the shell to detect the displacement distance of the positioning rod, and the adjusting assembly and the detection unit are both connected with the control module; and the control module forms a first body position positioning map of each patient according to the displacement distance of the positioning rods detected by each detection unit so as to record the first body position positioning maps of different patients, and controls the adjusting assembly to adjust the positions of the plurality of positioning rods according to the first body position positioning maps before subsequent fractional treatment of the patients. A user does not need to worry about losing the shaping function due to air leakage, vacuum loss and the like, and the device can be repeatedly used to avoid economic burden to a patient.

Description

Technical Field

[0001] The invention belongs to the medical field, and in particular relates to a multifunctional tumor radiotherapy intelligent positioning device. Background Art

[0002] Tumor radiotherapy is a local treatment method that uses radiation to treat tumors. The role and status of radiotherapy in tumor treatment are becoming increasingly prominent, and it has become one of the main means of treating malignant tumors. With the development of radiotherapy technology, precision radiotherapy requires that the patient's body position remain consistent during each treatment, and the position of the treatment site (target area) remains unchanged, so that the target area can receive a sufficient amount of radiation dose to ensure the efficacy of the treatment. Therefore, the accuracy of the positioning device in fixing the patient's body position during radiotherapy positioning and the repeatability between treatment fractions are particularly important.

[0003] For some patients, such as those who need radiotherapy for kyphoscoliosis tumors, vulvar tumors, and thigh tumors, due to the limitations of their condition, these patients cannot be positioned in the conventional supine or prone position, which greatly increases the difficulty and repeatability of positioning and affects the effect of radiotherapy. Therefore, when medical staff perform radiotherapy on these patients, not only is positioning difficult, time-consuming and labor-intensive, which brings great pain to the patients, but it also has a great impact on the efficacy of the patients.

[0004] Currently, vacuum shaping pads are often used clinically for such patients. The inside is filled with polymer particles, and the outer layer is a soft pad made of PVC material. Under normal conditions, the shaping pad is very soft and can cushion or wrap the patient's body or specific treatment area. When the shaping pad is completely matched with the body, the air in the vacuum pad is evacuated, and the pad becomes solid, forming a shape consistent with the body part, just like plaster. The patient wears this vacuum pad during each treatment to limit the movement of local body tissue. However, this shaping pad is a disposable product, and each patient is matched with a plastic pad, which results in a high cost and is prone to air leakage and loss of vacuum, thereby losing the shaping function. As a result, the same patient may need to purchase a new shaping pad, increasing the financial burden on the patient. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a multifunctional tumor radiotherapy intelligent positioning device, which does not need to worry about loss of shaping function due to air leakage, vacuum loss, etc., and can be reused to avoid causing economic burden to patients.

[0006] The technical solution of the present invention includes a bed board, on which a plurality of positioning units are arranged, each positioning unit is connected to a control module, and each positioning unit includes a shell, a positioning rod, an adjustment component and a detection unit; the adjustment component is located in the shell, the positioning rod is inserted in the shell, and the positioning rod is connected to the adjustment component, the adjustment component drives the positioning rod to extend into or out of the shell, the detection unit is located in the shell to detect the displacement distance of the positioning rod, and the adjustment component and the detection unit are both connected to the control module; the control module forms a first body position positioning map for each patient according to the displacement distance of the positioning rod detected by each detection unit to record the first body position positioning maps of different patients, and before subsequent fractionated treatments of the patient, the adjustment component is controlled to adjust the positions of a plurality of positioning rods according to the first body position positioning map.

[0007] Furthermore, the adjustment assembly includes a screw assembly and a motor. The motor is arranged at the lower interior of the housing. The screw of the screw assembly is fixedly connected to the drive shaft of the motor. The nut of the screw assembly is connected to the positioning rod. The displacement of the positioning rod drives the nut to move on the screw, causing the screw to rotate, thereby driving the drive shaft of the motor to rotate. The detection unit is rotationally connected to the drive shaft of the motor. The detection unit calculates the displacement distance of the positioning rod according to the number of rotations of the drive shaft of the motor.

[0008] Furthermore, each motor is provided with a locking component, which is used to control whether the transmission shaft of the motor rotates, and each locking component is connected to the control module.

[0009] Furthermore, a spring is provided in each housing, and the spring is arranged between the motor and the positioning rod.

[0010] Furthermore, a pressure sensor is provided at one end of each positioning rod located above the bed board. The control module simulates and records the pressure distribution map on the positioning map according to the pressure of each pressure sensor, so that during subsequent treatment of the patient, the medical staff can compare the current pressure distribution map with the initial pressure distribution map and adjust the patient's position in time.

[0011] Furthermore, during each subsequent treatment of the patient, the pressure value recorded by each pressure sensor is within an error range of 5% of the pressure value recorded for the first time.

[0012] Furthermore, the shell is square, the side length of the shell is 1 cm, and the cross-section of the positioning rod is square or circular. When it is square, 0.5 cm < the side length of the square < 1 cm, and when it is circular, 0.5 cm < the diameter of the circle < 1 cm.

[0013] Furthermore, the plurality of positioning units are arranged at equal intervals, and the interval between two adjacent positioning units is within 2 mm.

[0014] Furthermore, a plurality of buckles are provided on both sides of the bed board for sliding along the length direction.

[0015] Furthermore, scales are provided on both sides of the bed board along the length direction.

[0016] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0017] When a patient is being treated, the patient is positioned on several positioning rods. At this time, under the influence of the patient's own weight, the positioning rods move into the shell. After the patient's position is completed, the detection unit detects the displacement distance of the positioning rods, and the control module forms a first patient positioning map according to the displacement distance of the positioning rods detected by the detection unit, so that the therapist can position the patient according to the first positioning map during subsequent treatments. When the patient is treated this time, the adjustment component drives the positioning rod to move outside the shell to reset the positioning rod for the next patient to use. When the patient needs a second treatment, the control module controls the adjustment component to drive the positioning rod to move into the shell in advance according to the patient's first positioning map to reproduce the positioning rod position corresponding to the first positioning map. Compared with the prior art, the present invention does not need to worry about the loss of shaping function due to leakage, loss of vacuum, etc., and can be reused to avoid causing an economic burden on patients.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a positioning device according to one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a bed board structure according to one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a positioning unit in one embodiment of the present invention;

[0023] Figure 4 for Figure 3 Sectional view of the AA section.

[0024] Reference numerals:

[0025] 1. Positioning unit; 2. Housing; 3. Motor; 4. Detection unit; 5. Screw; 6. Nut; 7. Positioning rod; 8. Spring; 9. Locking component; 10. Bed board; 11. Buckle. DETAILED DESCRIPTION

[0026] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0027] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply 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.

[0028] In the description of the embodiments of the present invention, unless otherwise specified, “plurality” means two or more.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention provides a multifunctional tumor radiotherapy intelligent positioning device for radiotherapy, including a bed board 10, on which a plurality of positioning units 1 are arranged, each positioning unit 1 is connected to a control module, each positioning unit 1 includes a shell 2, a positioning rod 7, an adjustment component and a detection unit 4, the adjustment component is located in the shell 2, the positioning rod 7 is inserted in the shell 2, and the positioning rod 7 is connected to the adjustment component, the adjustment component drives the positioning rod 7 to extend into or out of the shell 2, the detection unit 4 is located in the shell 2 to detect the displacement distance of the positioning rod 7, the adjustment component and the detection unit 4 are both connected to the control module, the control module forms a first body position positioning map for each patient according to the displacement distance of the positioning rod 7 detected by each detection unit 4, so as to record the first body position positioning maps of different patients, and before the patient's subsequent fractionated treatment, the adjustment component is controlled to adjust the positions of the plurality of positioning rods 7 according to the first body position positioning map.

[0030] When the patient is being treated, the patient is positioned on several positioning rods 7. At this time, under the influence of the patient's own weight, the positioning rods 7 move into the shell 2. After the patient's position is completed, the detection unit 4 detects the displacement distance of the positioning rods 7. The control module forms a first patient positioning map according to the displacement distance of the positioning rods 7 detected by the detection unit 4, so that the therapist can position the patient according to the first positioning map during subsequent treatments. When the patient is treated this time, the adjustment component drives the positioning rods 7 to move outside the shell 2 to reset the positioning rods 7 for the next patient to use. When the patient needs a second treatment, the control module controls the adjustment component to drive the positioning rods 7 to move into the shell 2 in advance according to the patient's first positioning map to reproduce the position of the positioning rods 7 corresponding to the first positioning map. The present invention does not need to worry about the loss of shaping function due to leakage, loss of vacuum, etc., and can be reused to avoid causing an economic burden on patients.

[0031] In the embodiment provided by the present invention, the adjustment assembly includes a screw assembly and a motor 3. The motor 3 is arranged at the lower part of the interior of the housing 2. The screw 5 of the screw assembly is fixedly connected to the transmission shaft of the motor 3. The nut 6 of the screw assembly is connected to the positioning rod 7. The displacement of the positioning rod 7 drives the nut 6 to move on the screw 5, causing the screw 5 to rotate, thereby driving the transmission shaft of the motor 3 to rotate. The detection unit 4 is rotationally connected to the transmission shaft of the motor 3. The detection unit 4 calculates the displacement distance of the positioning rod 7 according to the number of rotations of the transmission shaft of the motor 3.

[0032] When the patient is being treated, the patient is positioned on several positioning rods 7. At this time, under the influence of the patient's own weight, the positioning rods 7 move into the shell 2, and the positioning rods 7 drive the screw rods 5 to rotate through the nut 6. When the patient's position is completed, the detection unit 4 calculates the number of rotations of the screw rods 5 and feeds back to the control module. The control module calculates the displacement distance of the positioning rods 7 according to the number of rotations of each screw rod 5, and forms the patient's first body positioning map, so that the positions of several positioning rods 7 can be adjusted in advance according to the first body positioning map during the patient's subsequent divided treatments.

[0033] Optionally, the positioning rod 7 is a hollow structure, so that the screw rod 5 can be inserted into the interior of the positioning rod 7, which can shorten the length of the positioning unit 1 and avoid excessive volume.

[0034] It can be understood that the displacement distance calculated according to the number of rotations of the screw rod 5 is determined based on the relative displacement of the nut 6 to the screw rod 5 , that is, the displacement distance of the nut 6 rotating one circle relative to the screw rod 5 .

[0035] Optionally, the adjustment component includes a telescopic rod, which controls the displacement distance of the positioning rod 7. Specifically, any structure that can control the displacement of the positioning rod 7 can be used. Technicians in this field can set it according to actual needs, and the present invention does not impose any limitation on this.

[0036] Optionally, the height of the positioning rod 7 is set according to actual needs based on whether the patient is lying flat or lying on his side, and the present invention does not impose any limitation on this.

[0037] It is optional, but for special body positions, it can be positioned together with a thermoplastic film. Buckles 11 and positioning settings for an abdominal pressure belt or a thermoplastic film are provided on both sides of the bed board 10 to facilitate positioning of the patient with a thermoplastic film or an abdominal pressure belt.

[0038] In the embodiment provided by the present invention, each motor 3 is provided with a locking component 9, and each locking component 9 is connected to the control module.

[0039] It can be understood that after the patient's position is completed, in order to avoid twisting the body and causing part of the positioning rod 7 to move, the locking component 9 is used to control whether the transmission shaft of the motor 3 can rotate, thereby preventing the positioning rod 7 from moving.

[0040] In the embodiment provided by the present invention, a spring 8 is provided in each housing 2 , and the spring 8 is arranged between the motor 3 and the positioning rod 7 .

[0041] It is understandable that when the patient is positioning, the positioning rod 7 is displaced. When the positioning is completed, part of the positioning rod 7 cannot contact the patient, that is, the displacement is too much, resulting in an inaccurate body positioning diagram finally formed. The positioning rod 7 can be moved by the spring 8 to ensure that the positioning rod 7 is in contact with the patient.

[0042] Furthermore, the spring 8 can also ensure that when the patient is positioned, the positioning rod 7 can move smoothly to avoid sudden drop.

[0043] In the embodiment provided by the present invention, a pressure sensor is provided at one end of each positioning rod 7 located above the bed board 10, and the control module simulates and records the pressure distribution map on the positioning map according to the pressure of each pressure sensor, so that during subsequent treatment of the patient, the medical staff can adjust the patient's position in time according to the comparison between the current pressure distribution map and the initial pressure distribution map.

[0044] It can be understood that the role of the pressure sensor is to detect the force applied to the positioning rod 7 when the patient is positioned for the first time. When the patient is subsequently treated, the control module first adjusts the height of the corresponding positioning rod 7 according to the initial positioning diagram. When the patient lies on several positioning rods 7, the patient's posture can be adjusted according to the force conditions to avoid the patient's posture being inconsistent with the posture during the first treatment, and at the same time to prevent the patient from being unable to remain still for a long time due to posture problems.

[0045] In the embodiment provided by the present invention, during each subsequent treatment of the patient, the pressure value recorded by each pressure sensor is within an error range of 5% of the pressure value recorded for the first time.

[0046] It is understandable that during each subsequent treatment, the pressure detected by the pressure sensor will be different due to the patient's weight or force problems caused by not relaxing. Therefore, as long as it is within a reasonable error range, the patient's posture can be considered to be the same as the initial posture.

[0047] If the pressure value exceeds the error value, it will be marked in red in the pressure distribution diagram displayed on the control module, indicating that the patient's positioning posture this time may be different from the initial positioning posture and requires further adjustment.

[0048] It should be noted that when the patient's weight difference between two measurements is large, such as the difference is more than ten kilograms, the patient needs to be repositioned.

[0049] In the embodiment provided by the present invention, the side length of the shell 2 is 1 cm, and the cross-section of the positioning rod 7 is square or circular. When it is a square, 0.5 cm < the side length of the square < 1 cm, and when it is a circle, 0.5 cm < the diameter of the circle < 1 cm.

[0050] The positioning rods 7 are configured as a cube or a cylinder to ensure that when a plurality of positioning rods 7 are in contact with the patient, there is a small gap to avoid causing discomfort to the patient.

[0051] It can be understood that the side length or diameter of the positioning rod 7 is 1 cm, so that the density of the positioning devices on the bed board 10 is large, thereby being able to effectively support the patient.

[0052] In the embodiment provided by the present invention, a plurality of positioning units 1 are arranged at equal intervals, and the interval between two adjacent positioning units 1 is within 2 mm.

[0053] In the embodiment provided by the present invention, a waterproof disinfection cloth is laid above the plurality of positioning rods 7 .

[0054] It can be understood that the waterproof disinfection cloth can be used by different patients and reduce the cost for patients.

[0055] In the embodiment provided by the present invention, a plurality of universal wheels and lifting rods are provided under the bed board 10 to facilitate the therapist to transfer it and install it on the accelerator bed to treat the patient.

[0056] In the embodiment provided by the present invention, a plurality of buckles 11 are provided on both sides of the bed board 10 for sliding along the length direction, and scales are provided on both sides of the bed board 10 along the length direction (not shown in the figure), so as to facilitate the combination of the positioning device with the positioning thermoplastic film or the abdominal pressure belt to position the patient.

[0057] It can be understood that the buckle 11 is slidably connected so as to adjust the position of the buckle 11 so as to better fix the patient.

[0058] Optionally, each buckle 11 is provided with a limiting component, and when the buckle 11 slides to a suitable position, the limiting component limits the buckle 11 to prevent the buckle 11 from moving.

[0059] Furthermore, the specifications and distribution of the buckles match those of thermoplastic films and abdominal pressure belts commonly used in existing clinical practice.

[0060] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0061] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy, comprising a bed board (10), characterized in that: The bed board (10) is provided with a plurality of positioning units (1), each of the positioning units (1) is connected to a control module, and each of the positioning units (1) comprises a housing (2), a positioning rod (7), an adjustment component and a detection unit (4); The adjusting component is located in the housing (2), the positioning rod (7) is inserted in the housing (2), and the positioning rod (7) is connected to the adjusting component, the adjusting component drives the positioning rod (7) to extend into or out of the housing (2), the detection unit (4) is located in the housing (2) to detect the displacement distance of the positioning rod (7), and the adjusting component and the detection unit (4) are both connected to the control module; The control module forms a first body position positioning map for each patient based on the displacement distance of the positioning rod (7) detected by each detection unit (4), so as to record the first body position positioning maps of different patients, and before the subsequent fractionated treatment of the patient, controls the adjustment component to adjust the positions of a plurality of the positioning rods (7) based on the first body position positioning map.

2. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 1, characterized in that: The adjustment assembly comprises a lead screw assembly and a motor (3); The motor (3) is arranged at the lower part of the housing (2); the lead screw (5) of the lead screw assembly is fixedly connected to the transmission shaft of the motor (3); the nut (6) of the lead screw assembly is connected to the positioning rod (7); the displacement of the positioning rod (7) drives the nut (6) on the lead screw (5) to move, so that the lead screw (5) rotates, thereby driving the transmission shaft of the motor (3) to rotate; the detection unit (4) is rotationally connected to the transmission shaft of the motor (3); the detection unit (4) calculates the displacement distance of the positioning rod (7) according to the number of rotations of the transmission shaft of the motor (3).

3. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 2, characterized in that: Each of the motors (3) is provided with a locking component (9), the locking component (9) being used to control whether the transmission shaft of the motor (3) rotates, and each locking component (9) is connected to the control module.

4. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 2, characterized in that: A spring (8) is provided in each housing (2), and the spring (8) is arranged between the motor (3) and the positioning rod (7).

5. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 2, characterized in that: Each positioning rod (7) is provided with a pressure sensor at one end located above the bed board (10), and the control module simulates and records a pressure distribution diagram on the positioning diagram according to the pressure of each pressure sensor, so that during subsequent treatment of the patient, medical staff can adjust the patient's body position in a timely manner by comparing the current pressure distribution diagram with the initial pressure distribution diagram.

6. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 5, characterized in that: During each subsequent treatment of the patient, the pressure value recorded by each pressure sensor is within an error range of 5% of the pressure value recorded for the first time.

7. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 1, characterized in that: The housing (2) is square, the side length of the housing (2) is 1 cm, and the cross section of the positioning rod (7) is square or circular; When it is a square, 0.5 cm < the side length of the square < 1 cm; When it is a circle, 0.5 cm < the diameter of the circle < 1 cm.

8. A multifunctional tumor radiotherapy intelligent positioning device for radiotherapy as claimed in claim 7, characterized in that: The plurality of positioning units (1) are arranged at equal intervals, and the interval between two adjacent positioning units (1) is within 2 mm.

9. The multifunctional tumor radiotherapy intelligent positioning device for radiotherapy according to claim 1, characterized in that: A plurality of buckles (11) are provided on both sides of the bed board (10) for sliding along the length direction.

10. The multifunctional tumor radiotherapy intelligent positioning device for radiotherapy according to claim 1, characterized in that: Both sides of the bed board (10) are provided with scales along the length direction.

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