Long-acting positioning marking pen for tumor radiotherapy
A dual-pen system with rotating rollers and protective layers addresses the issue of marker fading in radiotherapy by ensuring prolonged mark visibility and durability, facilitating precise radiotherapy planning.
Patent Information
- Application Number
- CN202510796804.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-16
- Publication Date
- 2025-07-15
AI Technical Summary
The marking of existing tumor radiotherapy markers is likely to become shallow or blurred after several days to one week due to sweating, friction in clothes, etc., which affects the accuracy of positioning.
A long-acting positioning marker for tumor radiotherapy is designed, using a marker pen and an auxiliary pen that is used for marking, and an auxiliary pen is used to apply protective liquid. It increases the color development through the rotation wheel and forms a protective layer to prevent decolorization.
It increases the color rendering time of the mark, prevents the marking from decolorization, improves the accuracy and stability of positioning, is convenient to operate, and is suitable for clinical use.
Smart Images

Figure CN120305582A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of radiotherapy marking tools, and particularly to a long-acting positioning marking pen for tumor radiotherapy. Background Art
[0002] The cure rate of simple radical radiotherapy for early-stage tumors is very high. For example, for early nasopharyngeal carcinoma, skin cancer, cervical cancer, early laryngeal cancer, and lymphoma, 90% of patients can be cured by radiotherapy, and the cosmetic effect is better than that of surgery. The 5-year survival rate of radiotherapy for stage I-IV nasopharyngeal carcinoma can reach 66.9%; the 5-year survival rate of radiotherapy for early glottic cancer is 80%-95%, and the normal voice function can be retained; for early esophageal cancer, anal cancer, prostate cancer, etc., the radiotherapy effect is similar to that of surgery, and the 5-year survival rate after radiotherapy is more than 80%. The 5-year survival rate of early cervical cancer treated with radiotherapy plus intracavitary afterloading is 82.7%-93.4%; radiotherapy plus endocrine therapy for prostate cancer can achieve high-quality long-term survival. These data fully prove that these tumors are suitable for radiotherapy, with higher survival rates and quality of life, so radiotherapy should be used as the standard means for local treatment of these tumors.
[0003] With the development of modern radiotherapy technology, for many early-stage tumors that were originally treated with surgery as the first choice, radiotherapy can still achieve a high local control rate and survival rate, and the quality of life is higher. For example, the 5-year survival rate of surgical resection of early-stage non-small cell lung cancer is 50%-70%, while the 5-year survival rate of stage I non-small cell lung cancer that cannot tolerate surgery treated with modern radiotherapy technology can reach more than 60%, and the 3-year survival rate of stage I non-small cell lung cancer that can tolerate surgery treated with modern radiotherapy is as high as 88%.
[0004] Positioning is the first step to obtain accurate radiotherapy. Since radiation will inevitably damage normal tissues or organs while killing tumor cells, in order to effectively kill tumor cells, minimize damage to normal tissues and organs, and reduce complications. The patient needs to lie on a flat bed in the position required by high-precision radiotherapy, and the technician and doctor will perform highly repeatable position fixation and CT and MRI scans according to the patient's condition and location. During positioning, the doctor will mark the patient's radiotherapy field skin with gold dots and draw a red cross marking line with environmentally friendly medical ink to serve as a reference for formulating radiotherapy plans and radiotherapy positioning during radiotherapy to ensure treatment accuracy. The patient must pay special attention to protecting the marks drawn on the skin, check them every day, keep the lines clear, and never wipe them off. Generally, they are not easily faded, but due to reasons such as the patient sweating, clothes rubbing, and taking a bath, they may become lighter or blurred after several days to a week.
[0005] The emergence of this phenomenon poses a problem for doctors. How to increase the marking time so that the mark can be retained for a long time is an important issue that needs to be solved. To address this problem, there is an urgent need to design a long-acting positioning marking pen for tumor radiotherapy to solve the problem of mark fading during radiotherapy marking. Summary of the Invention
[0006] The purpose of the present invention is to address the deficiencies of the prior art and provide a long-acting positioning marking pen for tumor radiotherapy.
[0007] The present invention is achieved through the following technical solutions: A long-acting positioning marking pen for tumor radiotherapy mainly consists of a marking part, an auxiliary part, and a connecting part. Among them, the marking part and the auxiliary part have the same internal structure, each containing a cover box and a built-in marking pen and auxiliary pen. A rubber head airbag is provided on the side of the cover box. This airbag is designed with a magnetic suction joint, which can be adsorbed on the side of the cover box and is connected to the inside through a through groove. An annular rubber sealing ring is installed at the port of the through groove to ensure airtightness. The tops of the marking pen and the auxiliary pen are fixed by a connecting frame. A hollow runner is sleeved in the middle of the connecting frame. The runner is covered with a sponge sleeve and its side wall is a mesh structure, making the sponge sleeve communicate with the inside. The runner is connected to the connecting frame through a bearing to ensure smooth rotation. Second suction blocks made of magnets are installed on both sides of the surfaces of the marking pen and the auxiliary pen. T-shaped connecting rods are symmetrically arranged near the port on the inner wall of the cover box, and first suction blocks with opposite magnetic poles are fixed at their ends. The pen body is stably fixed through magnetic suction. The connecting part includes a mounting block, a connecting plate, and a connecting rope. The mounting block is firmly connected to the marking pen and the auxiliary pen by screws. An arc-shaped plate is fixed at the top of the connecting plate and the angle is adjusted by a fastening screw. The marking pen and the auxiliary pen are arranged at a 45-degree angle, and the pen tips are butted against each other to ensure the accuracy of positioning marking.
[0008] Compared with the prior art, the beneficial effects of the present invention are: The present invention cleverly uses the cooperation of the marking pen and the auxiliary pen to increase the color display at the marking position. Combined with the setting of the two side runners, one runner can increase the color display by rolling repeatedly, and the other runner is used to apply a protective liquid to form a protective layer, increasing the retention time of the mark, having the functions of waterproof and anti-friction. They cooperate with each other to increase color display and protection, avoiding decolorization. This marking pen is small and portable, can be used at any time, and is easy to operate. Compared with the existing method of increasing color display by stickers, this marking pen has a greater effect of increasing color display and preventing decolorization. Brief Description of the Drawings
[0009] Figure 1 It is a schematic structural diagram of the present invention.
[0010] Figure 2 It is an axonometric drawing of the present invention.
[0011] Figure 3 This is a schematic structural diagram of the cooperation between the first cover box and the runner of the present invention.
[0012] Label description: 1. Marker pen, 2. First suction block, 3. Connecting rod, 4. Second suction block, 5. Connecting frame, 6. First rubber head airbag, 7. Through groove, 8. Sealing ring, 9. Runner, 10. First cover box, 11. Connecting rope, 12. Second cover box, 13. Second rubber head airbag, 14. Arc plate, 15. Connecting plate, 16. Fastening screw, 17. Installation block, 18. Auxiliary pen. Specific implementation manner
[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0014] Please refer to Figures 1-3 , the present invention provides a technical solution: A long-acting positioning marker pen for tumor radiotherapy includes a marking part, an auxiliary part and a connecting part. The marking part includes a first cover box 10 and a marker pen 1. The marker pen 1 is arranged inside the first cover box 10. The auxiliary part includes a second cover box 12 and an auxiliary pen 18. The auxiliary pen 18 is arranged inside the second cover box 12. The internal structures of the marking part and the auxiliary part are the same; The first cover box 10 is provided with a first rubber - tipped airbag 6 on its side, and the second cover box 12 is provided with a second rubber - tipped airbag 13 on its side. Through - grooves 7 are arranged at the corresponding positions of the first rubber - tipped airbag 6 and the second rubber - tipped airbag 13. The through - grooves 7 are respectively opened on the side walls of the first cover box 10 and the second cover box 12. A sealing ring 8 is installed at the inner - port position of the through - groove 7. Connecting frames 5 are installed at the tops of both the marking pen 1 and the auxiliary pen 18. A runner 9 is sleeved in the middle of the connecting frame 5. Grooves corresponding to the runner 9 are opened on the back side walls of both the first cover box 10 and the second cover box 12. Second suction blocks 4 are installed on both sides of the surfaces of the marking pen 1 and the auxiliary pen 18. Connecting rods 3 are symmetrically installed near the port positions on the inner walls of the first cover box 10 and the second cover box 12. First suction blocks 2 are fixedly installed at the ends of the connecting rods 3. Both the first rubber - tipped airbag 6 and the second rubber - tipped airbag 13 are magnetic - adsorption connectors. The first rubber - tipped airbag 6 is adsorbed on the side of the first cover box 10, and the second rubber - tipped airbag 13 is adsorbed on the side of the second cover box 12. Both the first rubber - tipped airbag 6 and the second rubber - tipped airbag 13 are made of rubber materials and are both communicated with the through - groove 7. Both the first suction block 2 and the second suction block 4 are made of magnets, and the first suction block 2 and the second suction block 4 are opposite - named magnetic poles. The connecting rod 3 is of a T - shaped structure. The sealing ring 8 is made of rubber material and is of an annular structure. The part of the connecting frame 5 corresponding to the sealing ring 8 is of a hollow structure, so that the connecting frame 5 is communicated with the through - groove 7. A bearing is installed between the connecting frame 5 and the runner 9. The runner 9 is a hollow wheel. A sponge sleeve is sleeved on the outer surface of the runner 9. The side wall of the runner 9 is of a mesh structure, so that the runner 9 is communicated with the sleeved sponge sleeve; The connecting part includes a mounting block 17, a connecting plate 15 and a connecting rope 11. The connecting rope 11 is connected between the first cover box 10 and the second cover box 12. The mounting block 17 is installed between the marking pen 1 and the auxiliary pen 18. The connecting plate 15 is installed on the mounting block 17. A fastening screw 16 is installed between the connecting plate 15 and the mounting block 17. An arc - shaped plate 14 is fixedly connected to the top of the connecting plate 15. The mounting block 17 is fastened to the marking pen 1 and the auxiliary pen 18 respectively using screws. The included angle between the marking pen 1 and the auxiliary pen 18 is 45 degrees, and the nib positions of the marking pen 1 and the auxiliary pen 18 are butted.
[0015] Operating steps: Step 1: First, assemble the marking pen 1. The first cover box 10 and the second cover box 12 are detachable. Cover the first cover box 10 on the top of the marking pen 1, and cover the second cover box 12 on the top of the auxiliary pen 18. Snap the runner 9 into the corresponding grooves of the first cover box 10 and the second cover box 12 respectively, and then position it through the suction force of the first suction block 2 and the second suction block 4 to complete the assembly; Step 2: The marking pen 1 is a medical marking pen for normal use. Anthocyanin solution is filled in the auxiliary pen 18. A 0.5% - 1% sodium bicarbonate solution is filled in the second rubber - tipped airbag 13 to enhance the color development. A mixed solution of PVP and PEG is filled in the first rubber - tipped airbag 6. The preparation work is completed; Step 3: When making specific marks, the doctor pinches the connecting plate 15 and slides the marking pen. The marking pen 1 will make marks at the marking position, showing red marks. The auxiliary pen 18 will follow the marking position to smear the anthocyanin solution, which will deepen the color of the marking line. Subsequently, squeezing the first rubber head airbag 6 will allow the runner 9 in the first cover box 10 to be filled with a mixed solution of PVP and PEG. The runner 9 in the first cover box 10 rolls at the marking position to form a protective layer, which has the function of waterproofing. Step 4: As time goes by, the marking line will fade. At this time, roll the runner 9 in the second cover box 12 at the marking position again, and the 0.5%-1% sodium bicarbonate solution will be smeared at the marking position. The color development at the positions where the protective film falls off and wears will be enhanced. Repeatedly smear and wipe to enhance the color development. Then, roll the runner 9 in the first cover box 10 again to apply a protective layer at the marking position again to strengthen the protection of the mark and prevent the mark from being rubbed off.
[0016] This specific embodiment is only an interpretation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.
Claims
1. A long-acting positioning marker pen for tumor radiotherapy, comprising a marking part, an auxiliary part and a connecting part, characterized in that: The marking part includes a first cover box (10) and a marking pen (1), and the marking pen (1) is arranged inside the first cover box (10). The auxiliary part includes a second cover box (12) and an auxiliary pen (18), and the auxiliary pen (18) is arranged inside the second cover box (12). The internal structures of the marking part and the auxiliary part are the same; A first rubber-headed airbag (6) is installed on the side of the first cover box (10), and a second rubber-headed airbag (13) is installed on the side of the second cover box (12). A through groove (7) is provided at the corresponding positions of the first rubber-headed airbag (6) and the second rubber-headed airbag (13). The through grooves (7) are respectively opened on the side walls of the first cover box (10) and the second cover box (12). A sealing ring (8) is installed at the inner port position of the through groove (7). Connecting frames (5) are installed at the tops of both the marking pen (1) and the auxiliary pen (18). A runner (9) is sleeved in the middle of the connecting frame (5). Grooves corresponding to the runner (9) are opened on the back side walls of both the first cover box (10) and the second cover box (12). Second suction blocks (4) are installed on both sides of the surfaces of the marking pen (1) and the auxiliary pen (18). Connecting rods (3) are symmetrically installed near the port positions on the inner walls of both the first cover box (10) and the second cover box (12). First suction blocks (2) are fixedly installed at the ends of the connecting rods (3); The connecting part includes a mounting block (17), a connecting plate (15) and a connecting rope (11). The connecting rope (11) is connected between the first cover box (10) and the second cover box (12). The mounting block (17) is installed between the marking pen (1) and the auxiliary pen (18). The connecting plate (15) is installed on the mounting block (17). A fastening screw (16) is installed between the connecting plate (15) and the mounting block (17). An arc plate (14) is fixedly connected to the top of the connecting plate (15).
2. The long-acting positioning marker pen for tumor radiotherapy according to claim 1, wherein: Both the first rubber-headed airbag (6) and the second rubber-headed airbag (13) are magnetic suction connectors. The first rubber-headed airbag (6) is adsorbed on the side of the first cover box (10), and the second rubber-headed airbag (13) is adsorbed on the side of the second cover box (12). Both the first rubber-headed airbag (6) and the second rubber-headed airbag (13) are made of rubber material and are both communicated with the through groove (7).
3. The long-acting positioning marker pen for tumor radiotherapy according to claim 1, wherein: Both the first suction block (2) and the second suction block (4) are made of magnets. The first suction block (2) and the second suction block (4) are opposite magnetic poles to each other. The connecting rod (3) is of a T-shaped structure.
4. The long-acting positioning marker pen for tumor radiotherapy according to claim 1, wherein: The mounting block (17) is fastened to the marking pen (1) and the auxiliary pen (18) respectively with screws.
5. The long-acting positioning marker pen for tumor radiotherapy according to claim 1, characterized in that: The sealing ring (8) is made of rubber material and is of an annular structure. The part of the connecting frame (5) corresponding to the sealing ring (8) is of a hollow structure, so that the connecting frame (5) is communicated with the through groove (7). A bearing is installed between the connecting frame (5) and the runner (9). The runner (9) is a hollow wheel. A sponge sleeve is sleeved on the outer surface of the runner (9). The side wall of the runner (9) is of a mesh structure, so that the runner (9) is communicated with the sleeved sponge sleeve.
6. The long-acting positioning marking pen for tumor radiotherapy according to claim 1, wherein: The included angle between the marking pen (1) and the auxiliary pen (18) is 45 degrees, and the pen tips of the marking pen (1) and the auxiliary pen (18) are butted.
7. The long-acting positioning marker pen for tumor radiotherapy according to claim 1, wherein It also includes the following steps: Step 1: First, assemble the marker pen (1). The first cover box (10) and the second cover box (12) are detachable. Cover the first cover box (10) on the top of the marker pen (1), and cover the second cover box (12) on the top of the auxiliary pen (18). Clamp the rotating wheel (9) into the corresponding slots of the first cover box (10) and the second cover box (12) respectively, and then position it by the suction force of the first suction block (2) and the second suction block (4) to complete the assembly. Step 2: The marker pen (1) is a medical marker pen for normal use. Load anthocyanin solution into the auxiliary pen (18), load 0.5%-1% sodium bicarbonate solution into the second rubber head airbag (13) to enhance color development, and load a mixture of PVP and PEG into the first rubber head airbag (6). The preparation work is completed. Step 3: When specifically marking, the doctor pinches the connecting plate (15) and slides the marker pen. The marker pen (1) will make a mark at the marking position, showing a red mark, while the auxiliary pen (18) will smear the anthocyanin solution along with the marking position, which will deepen the color of the marking line at this time. Subsequently, squeeze the first rubber head airbag (6), and the PVP and PEG mixture will be introduced into the rotating wheel (9) in the first cover box (10). The rotating wheel (9) in the first cover box (10) rolls at the marking position to form a protective layer, which has the function of waterproofing. Step 4: As time goes by, the marking line will fade. At this time, roll the rotating wheel (9) in the second cover box (12) at the marking position again, and the 0.5%-1% sodium bicarbonate solution will be smeared at the marking position. The color development will be enhanced at the positions where the protective film falls off and wears. Repeatedly smear and wipe to enhance the color development, and then roll the rotating wheel (9) in the first cover box (10) to smear a layer of protective film at the marking position again to strengthen the protection of the mark and prevent the mark from being rubbed off.