A body position fixing device and method for ion radiation therapy of breast cancer

Abstract

The present invention discloses a body position fixing device and method for ion radiotherapy of breast cancer, comprising a base plate and a support plate rotatably arranged on the base plate, the base plate being provided with a through hole corresponding to the support plate, the inner side wall of one side of the through hole being connected to the support plate by a hinge, the bottom of one end of the support plate away from the hinge being connected to the base plate by an adjustment mechanism, and both sides of the top of the base plate being provided with adjustable fixing plates, the top of the fixing plate being fixedly connected with a shaping bracket. In the present invention, the device can fix the patient's head mandible, hands, waist, buttocks and other parts of the patient's body, can improve the patient's comfort during radiotherapy, reduce the uncertainty of changes in the patient's body position during radiotherapy, improve the consistency of position repetition, and thus increase the accuracy of radiotherapy, and therefore has good practicality.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a body position fixing device and method for ion radiotherapy of breast cancer. Background Art

[0002] Breast cancer is one of the most common malignant tumors threatening the health of Chinese women, and ranks first in the incidence of malignant tumors in women. Ion radiotherapy has significant physical and biological advantages due to its characteristic Bragg peak. Compared with conventional photon therapy, it can better protect the cardiovascular system and normal lung tissue of breast cancer patients, increase the benefits of breast cancer patients in radiotherapy, and improve tumor control rate and patient survival rate. Traditional photon breast cancer radiotherapy positioning uses a breast support to fix the body position and tangent field treatment. In order to avoid the arm blocking the tangent field irradiation of breast tissue during treatment, the patient's affected arm is raised and abducted, and the patient lies naturally on the body frame. This conventional fixed position method is prone to displacement in various directions such as the head, neck, chest and waist, and the positioning repeatability is poor, resulting in systematic and random errors in positioning.

[0003] Compared with photon therapy, ion radiotherapy requires higher accuracy in treatment position repeatability, and uses a vertical breast field angle rather than a tangential field to treat breast cancer. During treatment, the head and various parts of the body need to be accurately fixed in position. There is no need to raise the arms, but only to place them on both sides of the body, highly offset from the breast position of the body. And the natural fall of the hands is more conducive to the positioning and repeatability accuracy of the neck, armpits, and arms compared to raising and abducting the arms. Especially for patients with limited arm mobility and difficulty raising their arms after modified radical mastectomy, this position fixation method can greatly improve the patient's comfort and position accuracy. Based on this, it is necessary to design a breast cancer position fixation device and method that can simultaneously fix the head, arms, waist and hips based on the characteristics of ion radiotherapy for breast cancer.

[0004] To this end, we propose a body position fixation device and method for ion radiotherapy of breast cancer. Summary of the invention

[0005] The object of the present invention is to provide a body position fixing device and method for ion radiation therapy of breast cancer, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A body position fixing device for ion radiotherapy of breast cancer, comprising a base plate and a support plate rotatably arranged on the base plate, wherein the base plate is provided with a through hole corresponding to the support plate, an inner side wall of one side of the through hole is connected to the support plate through a hinge, and the bottom of one end of the support plate away from the hinge is connected to the base plate through an adjustment mechanism;

[0008] Adjustable fixing plates are provided on both sides of the top of the bottom plate, and a shaping bracket is fixedly connected to the top of the fixing plate;

[0009] A detachable T-block is installed on both sides of one end of the support plate close to the hinge, and a plurality of fixing holes a are arranged on the T-block; an installation opening and a plurality of fixing holes b are arranged at one end of the support plate away from the hinge, and the plurality of fixing holes b are symmetrically arranged with the installation opening as the center;

[0010] A limiting block arranged in a T shape is fixedly connected to the top of one end of the bottom plate close to the hinge.

[0011] Preferably, the adjustment mechanism includes two fixed blocks a fixedly connected to the bottom of one end of the support plate away from the hinge, the fixed block a is provided with a rotationally connected shaft a, a cross bar is provided in the through-opening, both ends of the cross bar pass through the through-opening and are fixedly connected with sliders a, the inner side wall of the through-opening is provided with a sliding cavity corresponding to the slider a, the inner side wall of the sliding cavity is provided with a sliding opening corresponding to the cross bar, the top of both ends of the cross bar is provided with grooves, the inner side wall of the groove is rotatably connected with the shaft b, the shaft a is connected to the shaft b through a connecting rod, and the outer side wall of the cross bar is connected to the bottom plate through a limiting mechanism.

[0012] Preferably, the limiting mechanism includes two fixed blocks b fixedly connected to the side of the cross bar away from the hinge, a support rod is inserted into the fixed block b, one end of the support rod passes through the fixed block b and is connected to the bottom plate, the inner side wall of the sliding cavity is provided with a socket a corresponding to the support rod, one end of the support rod away from the bottom plate is fixedly connected to a connecting block, the outer side wall of the support rod is sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the outer side wall of the fixed block b and the outer side wall of the connecting block.

[0013] Preferably, the fixed plate is connected to the base plate via a slider b, a slide groove corresponding to the slider b is provided on the base plate, the fixed plate is connected to the base plate via a locking screw, and a locking hole corresponding to the locking screw is provided at the inner bottom of the slide groove.

[0014] Preferably, a positioning pointer is fixedly connected to the top of one end of the fixing plate, and a scale corresponding to the positioning pointer is arranged on the top of the bottom plate.

[0015] Preferably, the T-block is connected to the outer side wall of the support plate via a plug, and a plug hole b corresponding to the plug is provided on the support plate.

[0016] Preferably, the mounting opening is used for mounting a headrest.

[0017] Preferably, a shaping foam block is arranged on the top of the shaping bracket, and a placement groove corresponding to the shaping foam block is arranged on the top of the shaping bracket.

[0018] A method for using a body position fixing device for ion radiation therapy of breast cancer comprises the following steps:

[0019] S1. Use this device to confirm the height of the supine position of the breast cancer patient. Fix this positioning device on the treatment bed, adjust the position of the crossbar, raise the end of the support board with the pillow to a certain angle, place the patient's buttocks on the vacuum pad covered by the bottom plate close to the limit block, and limit it with the limit block. Lie on the support board with your arms hanging naturally and your forearms placed on the shaping bracket. Adjust the height of the support board to fully expose the irradiation areas such as the neck, clavicle, chest lymph node area and breast, and ensure that the arm position does not block the irradiation area that needs radiotherapy;

[0020] S2, fix the position of the arm, use the shaping foam block to shape and position the elbow, forearm and fingers, and after the shaping of the shaping foam block is completed, fix the shaping foam block to the bottom plate through the shaping bracket and the fixing plate, and place the arm on the shaping foam block to position the elbow, forearm and fingers;

[0021] S3. Fix the head. The patient's head is placed on the headrest on the support board. The head is tilted to one side or placed in the middle to expose the neck on the affected side. The mandible is fixed with a thermoplastic film. The two ends of the thermoplastic film are respectively fixed on the fixing holes b on the support board.

[0022] S4. Fix the waist position. After using the positioning image in the treatment CT room to confirm that the patient's spine is in the middle without bending, the lower waist is covered with a thermoplastic film for fixation. The two ends of the heat shrink film used for fixing the lower waist are respectively fixed on the T-block;

[0023] S5. Fix the hip position. The vacuum pad covers the bottom plate and is located between the hip limit block and the support plate. The hip is fixed according to the patient's body shape to prevent the body from sliding down.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, the device can fix the patient's head, mandible, hands, waist, buttocks and other parts of the body, with high position fixation accuracy and repeatability, thus improving the accuracy of ion radiotherapy for breast cancer;

[0026] 2. In the present invention, the support plate raises the head and chest of the body and ensures that the arms hang down to form an upper and lower dislocation, thereby avoiding shoulder muscle tension caused by raising the arms and blocking the clavicle and neck treatment position, fully exposing the shoulder, neck and breast treatment positions, and being suitable for the radiation field direction of ion radiotherapy;

[0027] 3. In the present invention, a shaping bracket and a shaping foam block are used to shape and fix the patient's arm and fingers, so that the arm can be naturally hung and fixed, and a ruler is used to determine the position, without the need for the patient to raise the arm, which greatly improves the comfort of the patient's arm position and reduces the uncertainty of the arm position moving during treatment;

[0028] 4. In the present invention, the lower waist on the support plate can be fixed with a body membrane and a T-block to keep the patient's body in the middle, reducing the occurrence of patient position deviation due to spinal curvature during treatment and avoiding affecting the accuracy of radiotherapy;

[0029] 5. In the present invention, a limiting block is used on the bottom plate to limit the patient's buttocks. At the same time, according to the differences in the patient's buttocks, a personalized shaping buttocks vacuum fixation pad is used to shape and fix the patient's buttocks. Compared with the prior art that only uses blocks to limit the movement of the buttocks, the patient's comfort is improved and the accuracy of position repeatability is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a body position fixing device and method for ion radiotherapy of breast cancer proposed by the present invention;

[0031] Figure 2 This is a schematic diagram of the top view of the bottom plate in a body position fixing device and method for ion radiotherapy of breast cancer proposed by the present invention;

[0032] Figure 3 This is a schematic diagram of the top view of the support plate in a body position fixing device and method for ion radiotherapy of breast cancer proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure of a fixing plate and a slider b in a body position fixing device and method for ion radiotherapy of breast cancer proposed by the present invention;

[0034] Figure 5 This is a schematic diagram of the connection structure of a shaping bracket and a shaping foam block in a body position fixing device and method for ion radiotherapy of breast cancer proposed by the present invention.

[0035] In the figure: 1. bottom plate; 2. support plate; 3. fixing block a; 4. rotating shaft a; 5. connecting rod; 6. fixing plate; 7. locking screw; 8. shaping bracket; 9. positioning pointer; 10. through-hole; 11. hinge; 12. limit block; 13. cross bar; 14. rotating shaft b; 15. slider a; 16. fixing block b; 17. support rod; 18. spring; 19. connecting block; 20. scale; 21. locking hole; 22. T-block; 23. fixing hole a; 24. installation port; 25. fixing hole b; 26. slider b; 27. plug; 28. shaping foam rubber block; 29. ​​slide groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-Figure 5 The present invention also proposes a body position fixing device for ion radiotherapy of breast cancer, comprising a base plate 1 and a support plate 2 rotatably arranged on the base plate 1, a through hole 10 corresponding to the support plate 2 is arranged on the base plate 1, an inner side wall of one side of the through hole 10 is connected to the support plate 2 through a hinge 11, and the bottom of one end of the support plate 2 away from the hinge 11 is connected to the base plate 1 through an adjustment mechanism;

[0038] Adjustable fixing plates 6 are provided on both sides of the top of the bottom plate 1, and a shaping bracket 8 is fixedly connected to the top of the fixing plate 6;

[0039] A detachable T-block 22 is installed on both sides of one end of the support plate 2 close to the hinge 11, and a plurality of fixing holes a23 are provided on the T-block 22. An installation opening 24 and a plurality of fixing holes b25 are provided on one end of the support plate 2 away from the hinge 11, and the plurality of fixing holes b25 are symmetrically arranged with the installation opening 24 as the center.

[0040] A T-shaped limiting block 12 is fixedly connected to the top of one end of the bottom plate 1 close to the hinge 11 .

[0041] Furthermore, the adjustment mechanism includes two fixed blocks a3 fixedly connected to the bottom of one end of the support plate 2 away from the hinge 11, and a rotating shaft a4 is rotatably connected to the fixed block a3. A cross bar 13 is arranged in the through-hole 10, and both ends of the cross bar 13 pass through the through-hole 10 and are fixedly connected to sliders a15. The inner side wall of the through-hole 10 is provided with a sliding cavity corresponding to the slider a15, and the inner side wall of the sliding cavity is provided with a sliding opening corresponding to the cross bar 13. Grooves are provided on the top of both ends of the cross bar 13, and the inner side wall of the groove is rotatably connected to the rotating shaft b14. The rotating shaft a4 is connected to the rotating shaft b14 through the connecting rod 5, and the outer side wall of the cross bar 13 is connected to the bottom plate 1 through a limiting mechanism.

[0042] Furthermore, the limiting mechanism includes two fixed blocks b16 fixedly connected to the side of the cross bar 13 away from the hinge 11, a support rod 17 is inserted into the fixed block b16, one end of the support rod 17 passes through the fixed block b16 and is connected to the bottom plate 1, and the inner wall of the sliding cavity is provided with a socket a corresponding to the support rod 17, one end of the support rod 17 away from the bottom plate 1 is fixedly connected to a connecting block 19, and the outer wall of the support rod 17 is sleeved with a spring 18, and the two ends of the spring 18 are respectively fixedly connected to the outer wall of the fixed block b16 and the outer wall of the connecting block 19.

[0043] Furthermore, the fixed plate 6 is connected to the base plate 1 through a slider b26, a slide groove 29 corresponding to the slider b26 is provided on the base plate 1, the fixed plate 6 is connected to the base plate 1 through a locking screw 7, and a locking hole 21 corresponding to the locking screw 7 is provided at the inner bottom of the slide groove 29.

[0044] Furthermore, a positioning pointer 9 is fixedly connected to the top of one end of the fixing plate 6 , and a scale 20 corresponding to the positioning pointer 9 is provided on the top of the base plate 1 .

[0045] Furthermore, the T-block 22 is connected to the outer side wall of the support plate 2 via a plug 27 , and a plug hole b corresponding to the plug 27 is provided on the support plate 2 .

[0046] Furthermore, the mounting opening 24 is used for mounting a headrest.

[0047] Furthermore, a shaping foam block 28 is arranged on the top of the shaping bracket 8 , and a placement groove corresponding to the shaping foam block 28 is arranged on the top of the shaping bracket 8 .

[0048] A vacuum pad (not shown in the figure) is arranged between the limiting block 12 and the supporting plate 2 , and the vacuum pad is fixedly arranged on the top of the bottom plate 1 .

[0049] A method for using a body position fixing device for ion radiation therapy of breast cancer comprises the following steps:

[0050] S1. Use the device to confirm the height of the supine position of the breast cancer patient. Fix the positioning device on the treatment bed, adjust the position of the crossbar 13, raise the end of the support plate 2 with the pillow to a certain angle, place the patient's buttocks on the vacuum pad covered on the bottom plate 1 close to the limit block 12, and limit the position with the limit block 12. The body lies on the support plate 2 with the arms hanging naturally and the forearms placed on the shaping bracket 8. Adjust the height of the support plate 2 to fully expose the irradiation areas such as the neck, clavicle, chest lymph node area and breast, and ensure that the arm position does not block the irradiation area that needs to be radiotherapy;

[0051] S2, fix the position of the arm, use the shaping foam block 28 to shape and position the elbow, forearm and fingers, after the shaping of the shaping foam block 28 is completed, fix the shaping foam block 28 on the bottom plate 1 through the shaping bracket 8 and the fixing plate 6, and place the arm on the shaping foam block 28 to position the elbow, forearm and fingers;

[0052] S3, fix the head, place the patient's head on the headrest on the support plate 2, deflect the head to one side or place it in the middle to expose the affected neck, fix the mandible with a thermoplastic film, and fix the two ends of the thermoplastic film on the fixing holes b25 on the support plate 2 respectively;

[0053] S4, fix the waist position, use the positioning image in the treatment CT room to confirm that the patient's spine is in the middle without bending, and then cover the lower waist with a thermoplastic film for fixation, and the two ends of the heat shrink film used for fixing the lower waist are respectively fixed on the T-block 22;

[0054] S5. Fix the hip position. The vacuum pad covers the bottom plate 1 and is located between the limit block 12 and the support plate 2. The hip is fixed according to the patient's body shape to prevent the body from sliding down.

[0055] In the present invention, the device can fix the patient's head mandible, hands, waist and buttocks, etc., with high position fixation accuracy and repeatability, thereby improving the accuracy of ion radiotherapy for breast cancer.

[0056] In the present invention, the support plate 2 raises the head and chest of the body and ensures that the arms hang down to form an upper and lower dislocation, thereby avoiding the shoulder muscle tension caused by the raised arms and the obstruction of the clavicle and neck treatment position, fully exposing the shoulder, neck and breast treatment position, and being suitable for the radiation field direction of ion radiation therapy;

[0057] In the present invention, the shaping bracket 8 and the shaping foam block 28 are used to shape and fix the patient's arm and fingers, so that the arm is naturally hung and fixed, and the position is determined by the scale 20, without the need for the patient to raise the arm, which greatly improves the comfort of the patient's arm position and reduces the uncertainty of the movement of the arm position during treatment;

[0058] In the present invention, the lower waist on the support plate 2 can be fixed with a body membrane in combination with a T-block 22 to keep the patient's body in the middle, thereby reducing the occurrence of patient position deviation due to spinal curvature during treatment and avoiding affecting the accuracy of radiotherapy.

[0059] In the present invention, a limiting block 12 is used on the base plate 1 to limit the patient's buttocks. At the same time, according to the differences in the patient's buttocks, a personalized buttocks vacuum fixation pad is used to shape and fix the patient's buttocks. Compared with the prior art that only uses blocks to limit the movement of the buttocks position, the patient's comfort is improved and the accuracy of position repeatability is improved.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A body position fixation device for ion radiation therapy of breast cancer, characterized in that: It comprises a base plate (1) and a support plate (2) rotatably arranged on the base plate (1), the base plate (1) being provided with a through hole (10) corresponding to the support plate (2), an inner side wall of one side of the through hole (10) being connected to the support plate (2) via a hinge (11), and the bottom of one end of the support plate (2) away from the hinge (11) being connected to the base plate (1) via an adjustment mechanism; Adjustable fixing plates (6) are provided on both sides of the top of the bottom plate (1), and a shaping bracket (8) is fixedly connected to the top of the fixing plate (6); Removable T-shaped blocks (22) are installed on both sides of one end of the support plate (2) close to the hinge (11), and a plurality of fixing holes a (23) are provided on the T-shaped blocks (22); an installation opening (24) and a plurality of fixing holes b (25) are provided on one end of the support plate (2) away from the hinge (11), and the plurality of fixing holes b (25) are symmetrically arranged with the installation opening (24) as the center; A T-shaped limit block (12) is fixedly connected to the top of one end of the bottom plate (1) close to the hinge (11); The adjustment mechanism comprises two fixed blocks a (3) fixedly connected to the bottom of one end of the support plate (2) away from the hinge (11); the fixed block a (3) is provided with a rotationally connected shaft a (4); a cross bar (13) is provided in the through-hole (10); both ends of the cross bar (13) pass through the through-hole (10) and are fixedly connected to a slider a (15); the inner side wall of the through-hole (10) is provided with a sliding cavity corresponding to the slider a (15); the inner side wall of the sliding cavity is provided with a sliding hole corresponding to the cross bar (13); the top of both ends of the cross bar (13) is provided with a groove; the inner side wall of the groove is rotationally connected to the rotation shaft b (14); the rotation shaft a (4) is connected to the rotation shaft b (14) through a connecting rod (5); the outer side wall of the cross bar (13) is connected to the bottom plate (1) through a limiting mechanism; The limiting mechanism comprises two fixed blocks b (16) fixedly connected to a side of the cross bar (13) away from the hinge (11); a support rod (17) is inserted into the fixed block b (16); one end of the support rod (17) passes through the fixed block b (16) and is connected to the bottom plate (1); an inner side wall of the sliding cavity is provided with a plug hole a corresponding to the support rod (17); one end of the support rod (17) away from the bottom plate (1) is fixedly connected to a connecting block (19); an outer side wall of the support rod (17) is sleeved with a spring (18); two ends of the spring (18) are respectively fixedly connected to the outer side wall of the fixed block b (16) and the outer side wall of the connecting block (19).

2. A body position fixing device for ion radiotherapy of breast cancer according to claim 1, characterized in that: The fixed plate (6) is connected to the base plate (1) via a slider b (26); a slide groove (29) corresponding to the slide groove b (26) is provided on the base plate (1); the fixed plate (6) is connected to the base plate (1) via a locking screw (7); a locking hole (21) corresponding to the locking screw (7) is provided at the inner bottom of the slide groove (29).

3. The body position fixing device for ion radiotherapy of breast cancer according to claim 1, characterized in that: A positioning pointer (9) is fixedly connected to the top of one end of the fixed plate (6), and a scale (20) corresponding to the positioning pointer (9) is provided on the top of the bottom plate (1).

4. The body position fixing device for ion radiation therapy of breast cancer according to claim 1, characterized in that: The T-shaped block (22) is connected to the outer side wall of the support plate (2) via a plug (27), and a plug hole b corresponding to the plug (27) is provided on the support plate (2).

5. The body position fixing device for ion radiation therapy of breast cancer according to claim 1, characterized in that: The mounting opening (24) is used for mounting a headrest.

6. The body position fixing device for ion radiation therapy of breast cancer according to claim 1, characterized in that: A shaping foam block (28) is arranged on the top of the shaping bracket (8), and a placement groove corresponding to the shaping foam block (28) is arranged on the top of the shaping bracket (8).

7. A method for using the body position fixation device for ion radiation therapy of breast cancer according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Use the device to confirm the height of the supine position of the breast cancer patient. Fix the positioning device on the treatment bed, adjust the position of the crossbar (13), raise the end of the support plate (2) with the pillow to a certain angle, place the patient's buttocks on the vacuum pad covered on the bottom plate (1) close to the limit block (12), and limit the position with the limit block (12). The patient lies supine on the support plate (2), with the arms hanging naturally and the forearms placed on the shaping bracket (8). Adjust the height of the support plate (2) to fully expose the neck, clavicle, chest lymph node area and breast irradiation area, and ensure that the arm position does not block the irradiation area that needs radiotherapy; S2, fixing the position of the arm, using the shaping foam block (28) to shape and position the elbow, forearm and fingers, after the shaping of the shaping foam block (28) is completed, the shaping foam block (28) is fixed to the bottom plate (1) through the shaping bracket (8) and the fixing plate (6), and the arm is placed on the shaping foam block (28) to position the elbow, forearm and fingers; S3, fix the head, place the patient's head on the headrest on the support plate (2), deflect the head to one side or place it in the middle so that the neck on the affected side is exposed, and fix the mandible with a thermoplastic film, with both ends of the thermoplastic film respectively fixed to the fixing holes b (25) on the support plate (2); S4, fix the waist position, use a positioning image in the treatment CT room to confirm that the patient's spine is in the middle without bending, and then cover the lower waist with a thermoplastic film for fixation, and fix the two ends of the heat shrink film used for fixing the lower waist respectively on the T-block (22); S5. The buttocks are fixed in position. A vacuum pad is covered on the bottom plate (1) and is located between the buttocks of the limiting block (12) and the support plate (2). The buttocks are fixed according to the patient's body shape to prevent the body from sliding down.

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