A device for fixing the body position of lateral lying radiotherapy

Abstract

The present invention discloses a lateral-lying radiotherapy body position fixing device, comprising a support model and a foam filling bag, wherein the horizontal inclination angle of the support model is about 25 degrees, and the support model is used to support the patient's back; the support model is arranged in the foam filling bag, and the interior of the foam filling bag is filled with foam; a connecting component is arranged between the support model and the foam filling bag, and the support model is fixedly matched with the foam filling bag through the connecting component. The lateral-lying radiotherapy body position fixing device provided by the present invention uses a support model of about 25 degrees to raise the patient's left chest wall, so that the patient has better comfort and achieves a significant cardiac dose protection effect. Thus, an effective lateral-lying body position fixing device is provided for patients who cannot use deep inspiration breath-holding technology due to problems such as failure to meet breathing requirements or poor compliance.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for fixing a body position in a lateral lying radiotherapy position. Background Art

[0002] Adjuvant radiotherapy after breast cancer surgery can significantly reduce the risk of local recurrence and bring survival benefits to patients. However, it can also cause radiation-induced heart damage, leading to adverse cardiac events such as ischemic heart disease, valvular disease, and arrhythmias, especially in patients with left-sided breast cancer. Previous studies have shown that the higher the heart radiation dose, the greater the risk of major coronary events (myocardial infarction, coronary artery revascularization, and death from ischemic heart disease). Therefore, radiotherapy workers have been exploring various heart protection techniques to reduce the heart dose of patients undergoing radiotherapy after breast cancer surgery.

[0003] Previous studies have shown that compared with the traditional supine position, radiotherapy in the lateral position with the affected side elevated can significantly reduce the heart dose of patients with left-sided breast cancer without affecting the target area dose coverage. However, in the prior art, there is a lack of devices for fixing the body position in the lateral position. Therefore, in order to solve the deficiencies in the prior art, the present invention provides a device for fixing the body position in the lateral position for radiotherapy. Summary of the invention

[0004] The purpose of the present invention is to provide a device for fixing the body position of a patient in a lateral radiotherapy position, so as to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above object, the present invention provides a device for fixing a body position in a lateral lying position for radiotherapy, comprising:

[0006] A support model, wherein the horizontal inclination angle of the support model is 25 degrees, and the support model is used to support the patient's back;

[0007] A foam filling bag, wherein the support model is arranged in the foam filling bag, and the interior of the foam filling bag is filled with foam; a connecting component is arranged between the support model and the foam filling bag, and the support model is fixedly matched with the foam filling bag through the connecting component.

[0008] Preferably, the support model is a right-angled trapezoidal foam model, and the bottom angle of the support model is 24 degrees to 26 degrees.

[0009] Preferably, the upper base of the right-angled trapezoidal foam model is 7.5 cm, the lower base is 23.5 cm, the height is 7.5 cm, and the length of the right-angled trapezoidal foam model is 20.0 cm.

[0010] Preferably, the support model is made of polystyrene foam.

[0011] Preferably, the foam filling bag is a waterproof cloth bag.

[0012] Preferably, the connecting component is a double-sided tape.

[0013] Preferably, the connecting component is an integrated plate, which is fixedly disposed in the foam filling bag, and a clip strip is fixedly installed on the integrated plate, and the clip strip is an "I"-shaped structure, and a clip slot is provided on the lower bottom surface of the right-angled trapezoidal foam model, and the clip slot is adapted to the clip strip.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The lateral-lying radiotherapy position fixation device provided by the present invention uses a support model of about 25 degrees to raise the patient's left chest wall, so that the patient has better comfort and achieves a significant heart dose protection effect. Compared with traditional supine radiotherapy, lateral-lying radiotherapy with the left side raised can significantly reduce the heart and left anterior descending coronary artery (LAD) doses of patients undergoing radiotherapy after left breast cancer surgery without affecting the target area dose coverage, thereby providing an effective lateral-lying position fixation device for patients who cannot meet breathing requirements or compliance and cannot use deep inspiration breath-holding technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a right-angled trapezoidal foam model in Embodiment 1 of the present invention;

[0018] Figure 2 It is a schematic diagram of the connection between the right-angled trapezoidal foam model and the integrated plate in the second embodiment of the present invention. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0020] Embodiment 1

[0021] The invention provides a lateral radiotherapy body position fixing device, comprising a support model and a foam glue filling bag, wherein the support model is a right-angled trapezoid foam model, the upper base of the right-angled trapezoid foam model is 7.5 cm, the lower base is 23.5 cm, the height is 7.5 cm, the length of the right-angled trapezoid foam model is 20.0 cm, so as to ensure that the bottom angle of the right-angled trapezoid foam model is about 25 degrees, the material of the support model is polystyrene foam, and the support model is used to support the patient's back; the support model is arranged in the foam glue filling bag, the foam glue filling bag is a waterproof cloth bag, and the interior of the foam glue filling bag is filled with foam glue; the support model and the foam glue filling bag are fixed and matched by double-sided tape.

[0022] The side-lying radiotherapy position fixing device provided by the present invention is used as follows:

[0023] Step 1: Lay the waterproof bag flat on the position-fixing bed, and ask the patient to lie flat on the waterproof bag, with both hands raised and abducted, and the head tilted to the healthy side; preliminarily determine the position of the lower edge of the third rib on the left side of the sternum, the upper edge of the sixth rib on the left side of the sternum, and the spinous process of the patient, and mark them on the surface of the waterproof bag;

[0024] Step 2: Place the right-angled trapezoid foam model on the surface of the waterproof bag according to the markings. One staff member fixes the position of the right-angled trapezoid foam model, and another staff member assists the patient to lie flat on the waterproof bag, with both hands raised and abducted, and the head tilted to the healthy side; check the position of the right-angled trapezoid foam model to ensure that the right-angled trapezoid foam model is placed on the left side of the patient's back, with the two ends located on the third rib on the left side of the patient's sternum and the sixth rib on the left side of the sternum, and the 25-degree bottom angle side located about 5 cm to the right of the patient's spinous process, and ask the patient to resume sitting position;

[0025] Step 3: Mark the position of the right-angled trapezoid foam model on the surface of the waterproof bag, place the right-angled trapezoid foam model in the waterproof bag according to the position, and use double-sided tape to stick the lower plane of the right-angled trapezoid foam model in the waterproof bag for fixation;

[0026] Step 4: After mixing the foaming glue raw materials, pour them into the foaming glue filling bag and spread them evenly to reduce the residue of the foaming glue raw material mixture on the surface of the right-angle trapezoidal foam model;

[0027] Step 5: Assist the patient to lie down with his hands raised and abducted, and confirm again that the position of the right-angled trapezoid foam model is consistent with the starting mark position, and wait for the foam glue to be formed and fixed.

[0028] Embodiment 2

[0029] The difference between this embodiment and the first embodiment is that an integrated board is provided in the foam filling bag, a clip strip is fixedly installed on the integrated board, the clip strip is an "I" shaped structure, a clip slot is provided on the lower bottom surface of the right-angled trapezoid foam model, the direction of the clip slot is perpendicular to the length direction of the right-angled trapezoid foam model, and the clip slot is adapted to the clip strip. The clip slot is provided at a position 3.0 cm from one end of the model on the lower bottom surface of the right-angled trapezoid foam model, the width of the clip slot is 3.0 cm, the height is 1.3 cm, and the length of the middle part of the clip strip is 30.0 cm.

[0030] Combined with the patient's left chest wall irradiation area, which is usually from the upper limit to the lower edge of the left clavicle head and the lower limit to 2 cm of the contralateral breast fold and the position of the heart, the use process of the present invention is as follows:

[0031] Step 1: Lay the foam filling bag flat on the position fixing bed, place the right-angled trapezoid foam model inside the filling bag, align the card slot of the lower plane with the card strip on the chest of the integrated board, and use the card strip to fix the right-angled trapezoid foam model inside the waterproof cloth bag. One end of the right-angled trapezoid foam model is located at the third rib on the left side of the patient's sternum, and the other end is located at the sixth rib on the left side of the sternum. The inner side is about 5 cm to the right of the patient's spinous process. Mark the upper and lower limits and the inner and outer sides of the right-angled trapezoid foam model on the surface of the waterproof cloth bag.

[0032] Step 2: Mix the foaming glue raw materials evenly and pour them into the foaming glue filling bag to spread them evenly, so as to minimize the residue of the foaming glue raw material mixture on the surface of the right-angle trapezoidal foam model;

[0033] Step 3: Assist the patient to lie down with his hands raised and abducted, and confirm again whether the position of the model is consistent with the starting mark position, and wait for the foam to be formed and fixed.

[0034] The present invention uses a right-angle trapezoid foam model of about 25 degrees to elevate the patient's left chest wall, which provides better comfort for the patient and achieves significant heart dose protection. Compared with traditional supine radiotherapy, lateral-lying radiotherapy with the left side elevated can significantly reduce the heart and LAD doses of patients undergoing radiotherapy after left-sided breast cancer surgery without affecting the target dose coverage. Compared with the supine position, lateral-lying radiotherapy significantly reduced the average heart dose from 404.91±59.13cGy to 331.27±60.26cGy (p<0.001), a relative reduction of 18.35%; V 5Gy -V 30Gy The mean LAD dose decreased from 2155.28±307.23 cGy to 1815.67±340.03 cGy (p<0.001), a relative decrease of 15.41%. 5Gy -V 30Gy Also significantly reduced.

[0035] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A device for fixing the body position for lateral radiotherapy, characterized in that: include: A support model, wherein the support model is used to support the patient's back; A foam filling bag, wherein the support model is arranged in the foam filling bag, and the interior of the foam filling bag is filled with foam; A connecting component is provided between the support model and the foam filling bag, and the support model is fixedly matched with the foam filling bag through the connecting component; The support model is a right-angle trapezoidal foam model, and the bottom angle of the support model is 24 degrees to 26 degrees; The upper base of the right-angled trapezoid foam model is 7.5 cm, the lower base is 23.5 cm, the height is 7.5 cm, and the length of the right-angled trapezoid foam model is 20.0 cm; The connecting component is an integrated plate, which is fixedly arranged in the foam filling bag. A clamping strip is fixedly installed on the integrated plate, and the clamping strip is an "I"-shaped structure. A clamping slot is opened on the lower bottom surface of the right-angled trapezoidal foam model, and the clamping slot is adapted to the clamping strip.

2. The lateral radiotherapy position fixing device according to claim 1, characterized in that: The material of the support model is polystyrene foam.

3. The lateral radiotherapy position fixing device according to claim 1, characterized in that: The foam rubber filling bag is a waterproof cloth bag.

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