Combined type three-dimensional fixing device for prone position mammary gland

Abstract

The invention discloses a combined three-dimensional fixing device for prone-position mammary glands, which relates to the technical field of positioning devices and comprises a mammary gland supporting mechanism, a guide mechanism and a positioning mechanism. The mammary gland supporting mechanism comprises a three-dimensional breast cup and a supporting base; the three-dimensional teat cup comprises a cup body, a ventilation column is arranged on the cup body, a plug is arranged at the end of the ventilation column, the three-dimensional teat cup further comprises a vacuum valve, and one end of the vacuum valve penetrates through the plug and extends into the ventilation column. The supporting base comprises a base body, a guide rail groove is formed in the bottom of the base body, a positioning column is in threaded connection with the base body, and height scale marks are arranged on the positioning column; the guide mechanism comprises a transverse guide rail, threaded columns are arranged at the two ends of the transverse guide rail, and horizontal scale marks are arranged on the transverse guide rail. The positioning mechanism comprises a positioning bed plate and a positioning seat, a positioning groove is formed in the positioning seat, the positioning mechanism further comprises a locking knob, and vertical scale marks are arranged on the positioning seat. The device can effectively improve the positioning precision during radiotherapy after the breast cancer surgery, and improves the accuracy and safety of radiotherapy.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning devices, and particularly relates to a combined three-dimensional fixation device for the prone breast. Background Art

[0002] Breast cancer is one of the most common malignant tumors among women globally. Breast-conserving radical mastectomy is one of the standard treatment options for early breast cancer. It is not only comparable to modified radical mastectomy in terms of survival rate and recurrence rate, but also superior in terms of complication rate, improvement of quality of life, and aesthetic effect. All patients with invasive breast cancer receive postoperative adjuvant radiotherapy after breast-conserving surgery, which can significantly reduce the local recurrence rate and improve the long-term survival rate of patients.

[0003] During the radiotherapy process of breast cancer, the fixation of the patient's body position and the stability of the breast are crucial for the treatment effect. The main challenge during the radiotherapy process is that the uncertainty in positioning can lead to geometric position deviations. Moreover, the breast is restricted by the patient's body position during radiotherapy, and it is impossible to ensure that the breast is in the same spatial position during multiple repeated radiotherapy sessions, resulting in setup errors. Especially during the patient positioning stage, there are no obvious observable and recordable quantitative indicators, which is also the main reason for the low repeatability.

[0004] Currently, the body position fixation methods for breast radiotherapy mainly include the supine position and the prone position. The traditional supine position radiotherapy has the following problems: 1. Inaccurate body position fixation: The breast tissue is soft and located on the body surface. At the same time, affected by factors such as breathing and muscle tension, the position of the breast is prone to shift, resulting in a large setup error, affecting repeatability and accuracy, and thus affecting the radiotherapy accuracy; 2. Uneven dose distribution: The breast has an irregular shape, and there are position deviations during repeated treatments, resulting in uneven radiotherapy dose distribution and dose deviation; 3. Insufficient organ protection: In supine position radiotherapy, the breast tumor target area is close to important organs such as ribs, heart, and lungs, increasing the risk of these organs receiving excessive radiation and potentially causing side effects such as radiation-induced heart disease; 4. Potential risk to the contralateral breast: Traditional supine position radiotherapy is prone to cause the contralateral breast to receive scattered dose irradiation, increasing the potential risk of secondary tumors.

[0005] Due to many problems with supine positioning radiotherapy, prone positioning radiotherapy is currently recommended for most patients after breast-conserving surgery. Prone breast radiotherapy has significant technical advantages, which can effectively reduce the radiation doses received by important organs such as the heart and lungs, and significantly reduce the incidence of radiation pneumonia and radiation heart injury. Especially for patients with large-volume and left-sided breast cancer, prone radiotherapy has obvious advantages in dosimetry, can better control the target dose, and reduce the damage to surrounding normal tissues to a greater extent, thus improving the accuracy and effectiveness of radiotherapy. However, there is an important challenge in prone radiotherapy: the existing prone fixation devices have the following problems: the affected breast naturally droops, so the fixation accuracy of the affected side is poor, and it is impossible to ensure the consistency of the spatial geometric position of the breast and the positioning accuracy during each radiotherapy. Therefore, providing a prone breast stereotactic device, aiming to improve the positioning accuracy during radiotherapy after breast cancer surgery and improve the accuracy and safety of radiotherapy, is of great significance. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: aiming at the deficiencies of the existing technology, to provide a combined three-dimensional fixation device for the prone breast, which can effectively improve the positioning accuracy during radiotherapy after breast cancer surgery and improve the accuracy and safety of radiotherapy.

[0007] To solve the above technical problems, the technical solution of the present invention is:

[0008] A combined three-dimensional fixation device for the prone breast includes a breast support mechanism, a guiding mechanism, and a positioning mechanism;

[0009] The breast support mechanism includes a three-dimensional breast cup and a support base movably connected to the three-dimensional breast cup; the three-dimensional breast cup includes a cup body, an air vent column is provided on the cup body, a plug is provided at the end of the air vent column, and a vacuum valve is further included. One end of the vacuum valve passes through the plug and extends into the air vent column; the support base includes a base main body, a guide rail groove is provided at the bottom of the base main body, a positioning column is threadedly connected to the base main body, and a height scale line is provided on the positioning column;

[0010] The guiding mechanism includes a horizontal guide rail, threaded columns are provided at both ends of the horizontal guide rail, and a horizontal scale line is provided on the horizontal guide rail;

[0011] The positioning mechanism includes a positioning bed board and two positioning seats symmetrically arranged on both sides of the positioning bed board and engaged with the positioning bed board. A positioning groove adapted to the connecting column is provided on the positioning seat. The positioning mechanism further includes a locking knob. The threaded column is inserted into the positioning groove, and the locking knob is screwed into the threaded column for fixation. A vertical scale line is provided on the positioning seat.

[0012] Preferably, a clamping groove is provided at the bottom of the three-dimensional breast cup, and a clamping post adapted to the clamping groove is provided at the top of the support base. The clamping post is provided at the top of the positioning post, and the three-dimensional breast cup and the support base are movably connected through the cooperation of the clamping groove and the clamping post.

[0013] Preferably, a plurality of ventilation holes are evenly arranged in the circumferential direction at one end of the ventilation column connected to the cup body.

[0014] Preferably, the cup body, the ventilation column, and the clamping groove are of an integrally formed structure.

[0015] Preferably, the shape of the end of the vacuum valve is adapted to the inner wall of the ventilation column.

[0016] Preferably, the plug is clamped and connected to the ventilation column.

[0017] Preferably, an adjustment knob is provided at one end of the positioning post.

[0018] Preferably, a positioning block is provided at the bottom of the positioning seat, and positioning clamping grooves are provided on both sides of the positioning bedplate. The positioning seat and the positioning bedplate are clamped through the cooperation of the positioning block and the positioning clamping groove.

[0019] Due to the adoption of the above technical solution, the present invention has at least the following beneficial effects:

[0020] 1. The three-dimensional breast cup of the present device is in close contact with the patient's breast through vacuum adsorption, can keep the patient's breast filling the entire contour of the inner wall of the cup body, and the shape will not change, maintaining the consistency of the breast shape of the patient during radiotherapy, and effectively fixing the breast target area.

[0021] 2. Through the mutual cooperation of the support base, the transverse guide rail and the positioning seat, the present device can realize the precise positioning and adjustment of the three-dimensional breast cup and the breast in the cup body in three spatial geometric positions in the horizontal, vertical, and perpendicular directions, providing obvious, observable, and recordable quantitative indicators for the fixed positioning of breast cancer patients, and ensuring the repeatability of treatment. The present device can also improve the positioning accuracy of breast tumors in breast cancer patients in the spatial geometric position during radiotherapy, thereby further reducing the positioning error and ensuring the consistency of the positions of breast tumors during multiple repeated radiotherapy processes.

[0022] 3. The combined three-dimensional fixing device for prone breast of the present invention has a reasonable structure and is easy to operate, which can effectively improve the positioning accuracy of the breast part of breast cancer patients; moreover, the present device also improves the accuracy of repeated radiotherapy. By fixing the position of the breast, the relative position of the breast tumor and the radiotherapy ray is unified, so that the ray is accurately projected onto the target area each time, improving the dose accuracy of radiotherapy.

[0023] 4. Compared with the traditional breast cancer radiotherapy fixation method, during treatment, this device can keep the patient's breast fixed in a sagging state. When the breast tumor sags, it remains relatively separated from the ribs, heart, and lung organs, reducing the radiation dose received by normal organs, lowering the risk of side effects of radiotherapy, protecting normal tissues, and improving the safety of radiotherapy.

[0024] 5. When using this device to fix the patient's breast, the breast remains in a sagging state, and its relative shape is more regular, enabling a more uniform dose distribution. It ensures that all parts of the tumor are effectively irradiated, controls the dose deviation within a lower range, and improves the dose uniformity of radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of Embodiment 1;

[0026] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in

[0027] Figure 3 is Figure 1 an enlarged structural schematic diagram of part B in

[0028] Figure 4 is a structural schematic diagram of the breast support mechanism;

[0029] Figure 5 is a structural schematic diagram of the three-dimensional breast cup;

[0030] Figure 6 is Figure 5 an enlarged structural schematic diagram of part C in

[0031] Figure 7 is a structural schematic diagram of the support base;

[0032] Figure 8 is a structural schematic diagram of the transverse guide rail;

[0033] In the figure, 1. Breast support mechanism; 11. Three-dimensional breast cup; 1101. Cup body; 1102. Ventilation column; 1103. Plug; 1104. Vacuum valve; 1105. Card slot; 1106. Ventilation hole; 12. Support base; 1201. Base main body; 1202. Guide rail groove; 1203. Positioning column; 1204. Card column; 1205. Height scale line; 1206. Adjusting knob; 2. Guide mechanism; 21. Transverse guide rail; 22. Horizontal scale line; 23. Threaded column; 3. Positioning mechanism; 31. Positioning bed board; 32. Positioning seat; 33. Positioning block; 34. Positioning card slot; 35. Positioning groove; 36. Locking knob; 37. Vertical scale line. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described below in conjunction with embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0035] Embodiment 1

[0036] Refer to Figures 1 to 8 As shown, a combined three-dimensional fixing device for the prone breast includes a breast support mechanism 1, a guiding mechanism 2, and a positioning mechanism 3;

[0037] As Figure 2 、 Figures 5 - 6 Collectively shown, the breast support mechanism 1 includes a three-dimensional breast cup 11 and a support base 12 movably connected to the three-dimensional breast cup 11; the three-dimensional breast cup 11 includes a cup body 1101, and the cup body 1101 includes different models of large, medium, and small sizes, which can be selected according to the breast sizes of different patients. During use, the patient's breast is placed into the cup body 1101, and the edge position of the cup body 1101 contacts the chest wall skin around the patient's breast.

[0038] The cup body 1101 is provided with a ventilation column 1102, the end of the ventilation column 1102 is provided with a plug 1103, and further includes a vacuum valve 1104. One end of the vacuum valve 1104 passes through the plug 1103 and extends into the ventilation column 1102. The vacuum valve 1104 can be made of silicone material. The shape of the end of the vacuum valve 1104 extending into the ventilation column 1102 is adapted to the inner wall of the ventilation column 1102, and the plug 1103 is located at the other end of the ventilation column 1102 and is mutually engaged with the inner wall of the ventilation column 1102 to prevent the vacuum valve 1104 from falling out of the ventilation column 1102 during use.

[0039] The bottom of the three-dimensional breast cup 11 is provided with a card slot 1105. The cup body 1101, the ventilation column 1102, and the card slot 1105 are integrally formed structures to ensure airtightness.

[0040] During use, the patient's breast is placed into the cup body 1101, and the edge of the cup body 1101 contacts and presses tightly against the patient's skin. A negative pressure pump catheter commonly used in the radiotherapy department is connected to the tail end of the ventilation column 1102 for negative pressure pumping. The volume of the breast will fill the entire contour of the inner wall of the cup body 1101 under negative pressure, and the shape will not change, maintaining the consistency of the breast shape during the patient's radiotherapy, thereby effectively fixing the breast. After the negative pressure pump stops pumping air, under the action of air pressure, the front end of the vacuum valve 1104 is tightly pressed against the inner wall of the ventilation column 1102 to play a sealing role, preventing air from entering the cup body 1101 and maintaining the negative pressure inside the cup body 1101.

[0041] Further, in this embodiment, a plurality of ventilation holes 1106 are evenly arranged circumferentially at one end of the ventilation column 1102 connected to the cup body 1101, which can ensure the smooth discharge of the air inside the cup body 1101. After the treatment is over, if it is necessary to remove the three-dimensional breast cup 11, pinch the spherical end of the vacuum valve 1104 and pull it outwards, so that the front end of the vacuum valve 1104 is separated from the inner wall of the ventilation column 1102. After the air enters the cup body 1101 from the ventilation column 1102, the three-dimensional breast cup 11 can be removed.

[0042] As Figure 2 , Figure 4 , Figure 7 As shown jointly, the support base 12 includes a base main body 1201. A guide rail groove 1202 is provided at the bottom of the base main body 1201. A positioning column 1203 is threadedly connected to the base main body 1201. A clamping column 1204 is provided at the top of the positioning column 1203. The three-dimensional breast cup 11 and the support base 12 are combined and clamped through the cooperation of a clamping groove 1105 and the clamping column 1204. The height of the three-dimensional breast cup 11 is adjusted by rotating the positioning column 1203. A height scale line 1205 is provided on the positioning column 1203. After adjusting the positioning column 1203 to an appropriate height, record the value of the three-dimensional breast cup 11 of the patient in the vertical direction, providing an obvious, observable, and recordable quantitative index for the fixed positioning of breast tumor patients and ensuring the repeatability of the treatment.

[0043] Further, in this embodiment, an adjustment knob 1206 is provided at one end of the positioning column 1203, which is convenient for adjusting the height of the three-dimensional breast cup 11.

[0044] As Figure 1 , Figure 8 As shown jointly, the guiding mechanism 2 includes a transverse guide rail 21, which is adapted to the guide rail groove 1202 to provide positioning guidance for the transverse movement of the support base 12. A horizontal scale line 22 is provided on the transverse guide rail 21, which can record the value of the three-dimensional breast cup 11 of the patient in the transverse direction, providing an obvious, observable, and recordable quantitative index for the fixed positioning of breast tumor patients and ensuring the repeatability of the treatment.

[0045] Threaded columns 23 are provided at both ends of the transverse guide rail 21, which are convenient for connecting with the positioning mechanism 3, maintaining the relative vertical relationship between the transverse guide rail 21 and the positioning seat 32, and providing positioning guidance for the transverse guide rail 21 to move in the vertical direction of the positioning bed plate 31.

[0046] As Figure 1 , Figure 3As commonly shown, the positioning mechanism 3 includes a positioning bedplate 31 and two positioning seats 32 symmetrically arranged on both sides of the positioning bedplate 31 and engaged with the positioning bedplate 31. A positioning block 33 is provided at the bottom of the positioning seat 32, and positioning card slots 34 are provided on both sides of the positioning bedplate 31. The positioning seat 32 and the positioning bedplate 31 are engaged through the cooperation of the positioning block 33 and the positioning card slots 34 to prevent the positioning seat 32 from moving and ensure the stability of the entire device.

[0047] Furthermore, the positioning bedplate 31 is a general bedplate for the radiotherapy department, made of carbon fiber material, and the positioning card slots 34 are semi-circular.

[0048] The positioning seat 32 is provided with a positioning groove 35 adapted to the connecting column 23. The positioning mechanism further includes a locking knob 36. When fixing the transverse guide rail 21, the threaded columns 23 at both ends of the transverse guide rail 21 are respectively inserted into the positioning grooves 35. After adjusting the position, the locking knob 36 is screwed onto the threaded column 23 and tightened, which can lock the relative position between the transverse guide rail 21 and the positioning bedplate 31 to prevent the patient from moving during the treatment process.

[0049] The positioning seat 32 is provided with a vertical scale line 37, which can record the vertical direction value after the patient's body position is adjusted for positioning, providing obvious, observable, and recordable quantitative indicators for the fixed positioning of breast tumor patients and ensuring the repeatability of the treatment.

[0050] In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A combined three-dimensional fixation device for prone breast, characterized in that: It includes a breast supporting mechanism, a guiding mechanism and a positioning mechanism; The breast support mechanism comprises a three-dimensional breast cup and a support base movably connected to the three-dimensional breast cup; the three-dimensional breast cup comprises a cup body, a ventilation column is arranged on the cup body, a plug is arranged at the end of the ventilation column, and a vacuum valve is also included, one end of the vacuum valve passes through the plug and extends into the ventilation column; the support base comprises a base body, a guide rail groove is arranged at the bottom of the base body, a positioning column is threadedly connected to the base body, and a height scale line is arranged on the positioning column; The guide mechanism comprises a transverse guide rail, threaded posts are arranged at both ends of the transverse guide rail, and horizontal scale lines are arranged on the transverse guide rail; The positioning mechanism includes a positioning bed plate and two positioning seats symmetrically arranged on both sides of the positioning bed plate and engaged with the positioning bed plate. The positioning seat is provided with a positioning groove adapted to the connecting column. The positioning mechanism also includes a locking knob. The threaded column is inserted into the positioning groove, and the locking knob is screwed into the threaded column to fix it. The positioning seat is provided with vertical scale lines.

2. A combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: A slot is provided at the bottom of the three-dimensional breast cup, a clamping column adapted to the slot is provided at the top of the support base, the clamping column is arranged on the top of the positioning column, and the three-dimensional breast cup and the support base are movably connected through the cooperation of the slot and the clamping column.

3. A combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: One end of the ventilation column connected to the cup body is evenly provided with a plurality of ventilation holes in the circumferential direction.

4. A combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: The cup body, the ventilation column and the card slot are an integrally formed structure.

5. The combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: The shape of the end of the vacuum valve is matched with the inner wall of the ventilation column.

6. A combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: The plug is snap-fitted and connected to the vent column.

7. A combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: An adjusting knob is provided at one end of the positioning column.

8. The combined three-dimensional fixation device for prone breast according to claim 1, characterized in that: A positioning block is provided at the bottom of the positioning seat, and positioning slots are provided on both sides of the positioning bed plate. The positioning seat and the positioning bed plate are matched by the cooperation of the positioning block and the positioning slots.

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