Body surface marker for limb tumor radiotherapy

Abstract

The utility model provides a limb tumor radiotherapy body surface mark, which comprises a mark body, the mark body is provided with more than three mutually connected edges, the outer contour of the mark body is a regular polygon, the top surface of the mark body is arc-shaped along the height direction of the mark body, the mark body is provided with an accommodating cavity, and the accommodating cavity is provided with a cavity. A contrast agent is arranged in the accommodating cavity; the bonding piece is arranged at the bottom of the mark body, and the bonding piece is used for being bonded to the body surface of a patient. In addition to the human skeleton, the CT developing mark is added on the skin, so that the image matching accuracy is improved, the radiotherapy accuracy is improved, the curative effect is improved, and the side effect is reduced. Meanwhile, the limb change conditions, such as limb swelling and the like caused by tumor enlargement, of the patient at two time nodes during CT positioning and before treatment can be found in time through the position change of the body surface mark.

Description

Technical Field

[0001] The utility model relates to the technical field of radiotherapy auxiliary appliances, in particular to a body surface marker for radiotherapy of limb tumors. Background Art

[0002] Radiation therapy is a common cancer treatment that uses high-energy radiation, such as X-rays or proton beams, to kill or damage tumor cells. This treatment can be used as a single treatment or in combination with other treatments, such as surgery and chemotherapy. The principle of radiation therapy is to use radiation energy to damage the DNA of tumor cells, making them unable to continue to grow and divide. This can control or reduce the size of the tumor, reduce symptoms, prolong the patient's survival time, and improve the quality of life.

[0003] When patients undergo radiotherapy, they first undergo a CT scan to generate a CT positioning image. Before treatment, another CT scan (CBCT) is performed, and the two images are matched to determine whether the patient's body position is consistent and whether the tumor volume has increased significantly. Since CBCT images have poor clarity and bones are most obvious, the two images are usually matched using bones. In the long bones of the limbs, since the cross-sections of the bones are relatively regular, the differences in the cross-sections of adjacent bones are relatively small, which can easily lead to inaccurate matching. Summary of the invention

[0004] The utility model provides a body surface marker for radiotherapy of limb tumors, which is used to solve the above technical problems.

[0005] A body surface marker for radiotherapy of limb tumors, comprising: a marker body, the marker body being provided with more than three interconnected edges, the outer contour of the marker body being a regular polygonal ring, the top surface of the marker body being an arc along the height direction of the marker body, the marker body being provided with a accommodating cavity, the interior of the accommodating cavity being provided with a contrast agent; and an adhesive, the adhesive being provided at the bottom of the marker body and being used for bonding to the patient's body surface.

[0006] Preferably, the marking body is further provided with scale lines, and there are multiple scale lines, and the midpoint of each side is provided with a scale line.

[0007] Preferably, the outer contour of the marking body is an equilateral triangle.

[0008] Preferably, an arc-shaped transition portion is provided between two adjacent edges.

[0009] Preferably, the bottom surface of the marking body is a plane.

[0010] Preferably, the marking body is a plastic part.

[0011] Preferably, the contrast agent is any one of an iodine contrast agent and a barium contrast agent.

[0012] Preferably, the adhesive component includes an adhesive layer and a release film, the adhesive layer is bonded to the bottom surface of the tag body, and the release film is bonded to a side surface of the adhesive layer facing away from the tag body.

[0013] Preferably, a perfusion hole is opened on the side of the marking body, and the perfusion hole is communicated with the accommodating cavity.

[0014] Preferably, the marking body is further provided with a hole plug, and the hole plug is sealingly matched with the injection hole.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written description and the drawings.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic structural diagram of the body surface markers for radiotherapy of limb tumors described in one embodiment of the utility model.

[0019] Figure 2 It is a schematic diagram of the internal structure of the surface marker for radiotherapy of limb tumors described in one embodiment of the utility model.

[0020] Figure 3 This is a schematic structural diagram from another perspective of the surface marking for radiotherapy of limb tumors described in one embodiment of the utility model.

[0021] In the figure: 100, body surface marker for radiotherapy of limb tumors; 110, marker body; 111, edge; 112, accommodating cavity; 113, scale line; 114, perfusion hole; 115, hole plug; 120, adhesive member; 121, adhesive layer; 122, release film. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] The present utility model embodiment provides a body surface marker 100 for radiotherapy of limb tumors, such as Figure 1 , Figure 2 and Figure 3 As shown, the limb tumor radiotherapy body surface marker 100 includes: a marker body 110 and an adhesive 120. The marker body 110 is provided with more than three interconnected edges 111, the outer contour of the marker body 110 is a regular polygonal ring, and along the height direction of the marker body 110, the top surface of the marker body 110 is an arc. The marker body 110 is provided with a receiving cavity 112, and a contrast agent is provided inside the receiving cavity 112. The adhesive 120 is arranged at the bottom of the marker body 110, and the adhesive 120 is used to be bonded to the patient's body surface.

[0025] The working principle and beneficial effects of the above technical solution are as follows: During the use of the limb tumor radiotherapy body surface marker 100, the patient sticks the marker on the completely consistent limb surface position during CT positioning and CBCT scanning before radiotherapy. The annular outer contour of the regular polygon facilitates the overlap of the lines between the two CT scans, realizes the overlap of the limb images, and can be clearly developed on CT, and provides registration marks outside the limb bones to achieve matching. The curved top surface can reduce interfering lines and facilitate positioning. Since CT-developable marks are added to the skin in addition to the human skeleton, it is beneficial to improve the accuracy of image matching, thereby improving the accuracy of radiotherapy, improving the efficacy, and reducing side effects. At the same time, it is easy to timely discover the changes in the patient's limbs during CT positioning and at two time points before treatment through the position changes of the body surface markers, such as limb swelling caused by tumor enlargement.

[0026] In one embodiment, see Figure 1 and Figure 3 The marking body 110 is also provided with scale lines 113 , and there are multiple scale lines 113 , and a scale line 113 is provided at the midpoint of each side 111 .

[0027] The working principle and beneficial effects of the above technical solution are as follows: the scale line 113 can further improve the positioning effect. After being attached to the human body for the first time, the human body is marked along the scale line 113, so that there are at least three lines on the human body. Even if the mark falls off, a new sticker can be re-attached along the marked line of the human body to improve work efficiency.

[0028] Optionally, the outer contour of the marking body 110 may be a regular triangle ring, a regular quadrilateral ring, a regular pentagon ring, or other regular polygonal rings.

[0029] In one embodiment, see Figure 1 and Figure 3 The outer contour of the marking body 110 is an equilateral triangle ring.

[0030] The working principle and beneficial effects of the above technical solution are: convenient for distinguishing lines, simple structure and better use effect.

[0031] For further information, see Figure 1 and Figure 2 An arc-shaped transition portion is provided between two adjacent edges 111 .

[0032] The working principle and beneficial effect of the above technical solution are: preventing the marker body 110 from being embedded in the skin and affecting the accuracy of radiotherapy.

[0033] In one embodiment, see Figure 2 , the bottom surface of the tag body 110 is a plane.

[0034] The working principle and beneficial effects of the above technical solution are as follows: the flat bottom surface can ensure the bonding force with the adhesive 120 , thereby ensuring the bonding stability of the tag body 110 .

[0035] In one embodiment, see Figure 1 and Figure 2 , the tag body 110 is a plastic part. Specifically, the tag body 110 is medical plastic.

[0036] The working principle and beneficial effects of the above technical solution are: safe and non-toxic, low cost of use, and convenient disinfection and sterilization.

[0037] Optionally, the contrast agent may be an iodine contrast agent, a barium contrast agent or other contrast agents that can be visualized in CT.

[0038] In one embodiment, the contrast agent is a barium contrast agent.

[0039] The working principle and beneficial effects of the above technical solution are: high density, clear outline, high safety, no absorption, and low burden of use.

[0040] In one embodiment, see Figure 2The adhesive member 120 includes an adhesive layer 121 and a release film 122 . The adhesive layer 121 is bonded to the bottom surface of the tag body 110 , and the release film 122 is bonded to a side surface of the adhesive layer 121 that is away from the tag body 110 .

[0041] The working principle and beneficial effects of the above technical solution are: easy to use and able to ensure viscosity.

[0042] In one embodiment, see Figure 2 A filling hole 114 is opened on the side of the marking body 110 , and the filling hole 114 is connected to the accommodating cavity 112 .

[0043] The working principle and beneficial effects of the above technical solution are: facilitating the replenishment and replacement of contrast agents and improving ease of use.

[0044] For further information, see Figure 1 and Figure 2 The marking body 110 is also provided with a hole plug 115 , and the hole plug 115 is sealed with the injection hole 114 .

[0045] The working principle and beneficial effects of the above technical solution are as follows: the sealing of the perfusion hole 114 by the hole plug 115 is helpful to improve the sealing performance and prevent the leakage of contrast agent.

[0046] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A body surface marker (100) for radiotherapy of limb tumors, characterized in that: The limb tumor radiotherapy body surface markers (100) include: A marker body (110), wherein the marker body (110) is provided with more than three interconnected sides (111), the outer contour of the marker body (110) is a regular polygonal ring, and along the height direction of the marker body (110), the top surface of the marker body (110) is arc-shaped, and the marker body (110) is provided with a receiving cavity (112), and a contrast agent is provided inside the receiving cavity (112); the marker body (110) is also provided with scale lines (113), and the scale lines (113) are multiple, and the midpoint of each of the sides (111) is provided with the scale line (113); the outer contour of the marker body (110) is an equilateral triangle; An adhesive component (120), wherein the adhesive component (120) is arranged at the bottom of the marking body (110), and the adhesive component (120) is used to be adhered to the patient's body surface.

2. The limb tumor radiotherapy body surface marker (100) according to claim 1, characterized in that: An arc-shaped transition portion is provided between two adjacent edges (111).

3. The limb tumor radiotherapy body surface marker (100) according to claim 1, characterized in that: The bottom surface of the marking body (110) is a plane.

4. The limb tumor radiotherapy body surface marker (100) according to claim 1, characterized in that: The marking body (110) is a plastic part.

5. The limb tumor radiotherapy body surface marker (100) according to claim 1, characterized in that: The contrast agent is any one of an iodine contrast agent and a barium contrast agent.

6. The limb tumor radiotherapy body surface marker (100) according to claim 1, characterized in that: The adhesive component (120) comprises an adhesive layer (121) and a release film (122); the adhesive layer (121) is bonded to the bottom surface of the marking body (110); and the release film (122) is bonded to a side surface of the adhesive layer (121) that is away from the marking body (110).

7. The limb tumor radiotherapy body surface marker (100) according to any one of claims 1 to 6, characterized in that: A perfusion hole (114) is provided on the side of the marking body (110), and the perfusion hole (114) is communicated with the accommodating cavity (112).

8. The limb tumor radiotherapy body surface marker (100) according to claim 7, characterized in that: The marking body (110) is further provided with a hole plug (115), and the hole plug (115) is sealingly matched with the injection hole (114).

Images