CN116808453B - Head and neck foaming glue fixing device for radiotherapy - Google Patents

Abstract

The invention discloses a head and neck foam rubber fixing device used in radiotherapy, which comprises a foam rubber fixing bag and a body position fixing pad formed by foam rubber arranged in the foam rubber fixing bag, wherein the body position fixing pad comprises a head pad and a rectangular trunk pad, the head pad is of a cap-shaped structure which is connected with one end of the trunk pad in the length direction and is provided with a head groove, the head pad and the trunk pad are sunken to form a plurality of grooves at least at the positions corresponding to the shoulders and the neck of a patient, and a cylindrical auxiliary support which is matched with the grooves in shape and can be taken out and adjusted is inserted in each groove. The head and neck foaming adhesive fixing device for radiotherapy can enable the tumor position to be in the deviation range, achieve the purpose of accurate radiotherapy, and effectively solve the problem of poor positioning repeatability caused by body emaciation of a patient with head and neck cancer after multiple radiotherapy in the prior art.

Description

Foam fixation device for head and neck used in radiotherapy

Technical field

The invention relates to the technical field of radiotherapy equipment, and in particular to a head and neck foam fixation device used in radiotherapy.

Background technique

Radiation therapy is an indispensable treatment method for malignant tumors. Today's radiotherapy technology has fully entered the "three precision" era, precise positioning, precise planning and design, and precise treatment. Precise positioning is the first step in precise radiotherapy. Radiotherapy requires positioning and fixation before starting treatment every day. Ensuring the accuracy and repeatability of daily positioning requires effective and comfortable fixation technology. Radiotherapy position fixation is the first and most important step in the entire radiotherapy process. Depending on the types of diseases and different parts of the body that are not to be treated with radiotherapy, the patient should be fixed in the most comfortable and natural position as much as possible to achieve good repeatability during the radiotherapy course. Improve positioning errors and achieve precise radiotherapy. The use of fixed-size headrests used in radiotherapy position fixation is not suitable for every patient. Each individual’s head shape is different and the physiological curvature of the cervical spine is different, and even the length is different. When using a standard pillow, there will be a mismatch in the shape. gaps and discomfort. The foam individualized fixation technology perfectly solves this problem, and the head, neck and shoulder foam is well fixed at both shoulders. In radiotherapy for nasopharyngeal cancer, foam fixation technology can significantly reduce the three-dimensional head Y-axis (head-foot direction) and Z-axis (anterior-posterior) errors in the nasopharynx, and the neck can significantly reduce the X-axis (left-right direction) errors. ) and Z-axis (front-back direction) error. Foam pad fixation and positioning technology has stronger human body shaping, comfort, and better repeatability, ensuring the accuracy of radiotherapy. It has obvious advantages in position fixation of head and neck tumors, especially in the neck. The accuracy is significantly improved compared to conventional headrests, which can better ensure the accuracy and repeatability of cranial SBRT stereotactic radiotherapy and benefit more patients.

For patients with head and neck cancer, the head and neck will gradually lose weight during multiple radiotherapy treatments. This causes the actual position of the head and neck tumor to change, which is inconsistent with the position during the radiotherapy plan, resulting in a loss of radiotherapy accuracy. While the tumor has not been completely eliminated, it may cause greater damage to important tissues around the tumor. Although image-guided radiotherapy technology can correct accuracy errors to a certain extent, it can only be corrected within a certain error range. Redesigning styrofoam for fixation and replanning radiotherapy is time-consuming and laborious, so this issue needs to be addressed urgently.

Contents of the invention

The purpose of the present invention is to solve the existing problem in the prior art that head and neck cancer patients have poor positioning repeatability due to body weight loss after multiple radiotherapy treatments, and a head and neck foaming device for radiotherapy is proposed. Glue fixation device.

In order to achieve the above object, the present invention provides a head and neck foam fixation device for radiotherapy, which includes a foam fixation bag and a postural fixation pad composed of a foam fixation bag contained in the foam fixation bag. The posture fixation pad includes a head pad and a rectangular trunk pad. The head pad is a hat-shaped structure connected to one end of the length direction of the trunk pad and has a head groove. The head pad and the trunk pad are at least in Multiple grooves are formed corresponding to the depression at the patient's shoulder and neck position, and each groove is equipped with a removable and adjustable cylindrical auxiliary support that matches the groove.

Preferably, the head pad is also recessed to form a plurality of grooves at positions corresponding to the patient's head.

Preferably, the grooves on the head pad are distributed in at least two rows along the longitudinal direction, and the grooves on the torso pad are distributed in at least one row on the transverse direction. The grooves distributed along the longitudinal direction and the grooves distributed along the transverse direction form an inverted T. Glyph structure.

Preferably, the grooves at the torso pad are divided into at least two grooves one forming a row close to the head pad and grooves two in a row far away from the head pad. The number of grooves two is greater than that of groove one. The at least two grooves are arranged in line with the grooves at the head pad.

Preferably, the heights of the top surfaces of the adjustable columnar auxiliary supports located in the grooves of the torso pad and the head pad are different.

Preferably, the cylindrical auxiliary support includes a cylindrical part at the upper part and a spherical part at the lower part. The diameter of the cylindrical part is smaller than the diameter of the spherical part. The lower end of the cylindrical part is connected to the spherical part as one body, and the upper end surface of the cylindrical part is flat. On the support surface, the bottom of the groove is a spherical groove that matches the spherical part so that the cylindrical auxiliary support can rotate and change direction. The upper part of the groove is a cylindrical groove with a diameter larger than the diameter of the cylindrical part.

Preferably, both the cylindrical part and the spherical part include a low-density foam core material and a skin made of carbon fiber composite material wrapped around the periphery of the low-density foam core material, and the low-density foam core materials of the cylindrical part and the spherical part are integrated. Type structure, the skin of the cylindrical part and the spherical part is an integrated structure.

Preferably, the spherical part is a carbon fiber ball, the top of the carbon fiber ball extends toward the carbon fiber column, the cylindrical part includes a carbon fiber tube, the lower part of the carbon fiber tube is sleeved around the periphery of the carbon fiber column and is threadedly connected to the carbon fiber column, and the upper inner cavity of the carbon fiber tube is It is filled with a low-density foam core material, which is higher than the top of the carbon fiber tube, and the periphery of the carbon fiber tube and the low-density foam core material are jointly wrapped by a skin made of carbon fiber composite material.

Preferably, the spherical part is a carbon fiber ball, the top of the carbon fiber ball is recessed to form a recessed groove, the cylindrical part includes a carbon fiber tube, the lower part of the carbon fiber tube is inserted into the recessed groove and is threadedly connected to the carbon fiber ball, and the inner cavity of the carbon fiber tube It is filled with a low-density foam core material, which is higher than the top of the carbon fiber tube, and the upper periphery of the carbon fiber tube and the periphery of the low-density foam core material are jointly wrapped by a skin made of carbon fiber composite material.

Preferably, the diameter of the spherical groove of the groove is 1-1.5 cm, the side of the foam rubber fixing bag is provided with an opening and a zipper is provided at the opening.

Compared with the prior art, the beneficial effects of the head and neck foam fixation device used in radiotherapy of the present invention are as follows:

(1) Since patients may lose weight during multiple radiotherapy treatments, resulting in changes in the position of the tumor, by designing grooves and cylindrical auxiliary supports on the postural fixation pad, the position of the patient's head and neck can be freely raised, so that the position of the tumor is within the deviation range. Within, the purpose of precise radiotherapy is achieved, and the problem in the existing technology of poor positioning repeatability caused by head and neck cancer patients losing weight after multiple radiotherapy treatments is effectively solved.

(2) The position fixation pad adopts grooves and cylindrical auxiliary supports matching the grooves on the head, shoulders and neck, so that the position fixation pad can be used with all supine position radiotherapy fixation devices on the market, which can effectively improve the comfort of patients when lying on their backs. degree.

(3) The overall structure is simple and easy to disassemble.

(4) The cylindrical auxiliary support is made of carbon fiber material. The carbon fiber composite material has good X-ray transmittance, and the X-ray transmittance can be as high as 98%, ensuring that X-rays can be irradiated on the cylindrical auxiliary support at any angle without any damage. It produces refraction and absorbs very little X-rays, so it will not affect the radiation dose of X-rays. Moreover, carbon fiber materials also have the characteristics of high strength, impact resistance, fire and moisture resistance, and acid and alkali corrosion resistance.

(5) The cylindrical auxiliary support uses low-density foam core material, which not only gives the cylindrical auxiliary support sufficient supporting force, but also is low-cost.

(6) The spherical part uses carbon fiber balls, and the cylindrical part uses carbon fiber tubes and they are threaded together, so that the height of the cylindrical auxiliary support can be adjusted to suit different patients; and the height can be adjusted by simply rotating the cylindrical part, which is very convenient ; The height of the cylindrical auxiliary support is adjustable, so that if it is found that the shoulder and neck reduction effect of the CBCT taken by the tumor patient is poor in the later stage of the treatment (VRT in the ventral and dorsal direction is greater than 0.3cm), then according to the positioning image CBCT and positioning image CT Using the reset difference data and adjusting the height of the support at the corresponding position can achieve higher image matching, achieve the purpose of performing radiotherapy within the tolerance of the placement error, and thus better improve the tumor treatment gain ratio.

(7) The lower part of the carbon fiber tube is inserted into the concave groove of the carbon fiber ball, which makes the cylindrical auxiliary support stronger and less likely to break when the patient's head, shoulders and neck are pressed.

The invention will become clearer from the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the invention.

Description of the drawings

Figure 1 is a front view of the posture fixing pad of the present invention.

Figure 2 is a side view of the posture fixing pad of the present invention.

Figure 3 is a schematic diagram of Figure 2 combined with a columnar auxiliary support.

Figure 4 is a schematic diagram of a columnar auxiliary support.

Figure 5 is a schematic diagram of the internal structure of the columnar auxiliary support.

Figure 6 is a schematic diagram of the internal structure of another embodiment of the columnar auxiliary support.

Figure 7 is a schematic diagram of the internal structure of yet another embodiment of the columnar auxiliary support.

Explanation of reference numbers: posture fixation pad 1, head pad 11, torso pad 12, groove 13, groove one 13a, groove two 13b, cylindrical auxiliary support 2, cylindrical part 21, carbon fiber tube 21a, spherical part 22 , carbon fiber pillars 22a, recessed grooves 22b, low-density foam core 2a, skin 2b.

Implementation

Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like element numbers represent like elements.

Please refer to Figures 1-7. The head and neck foam fixation device used in radiotherapy includes a postural fixation pad 1 composed of a foam fixation bag and foam rubber installed in the foam fixation bag. The side of the foam rubber fixing bag is provided with an opening and a zipper is arranged at the opening, and the foam rubber is loaded into the foam rubber fixing bag from the zipper. The postural fixation pad 1 includes a head pad 11 and a rectangular trunk pad 12. The head pad 11 is a hat-shaped structure connected to one end of the length direction of the trunk pad 12 and has a head groove. The head pad 11 and The trunk pad 12 is recessed to form a plurality of grooves 13 at positions corresponding to the patient's shoulders and neck. The bottom of the grooves 13 is a spherical groove, and the upper part of the groove is a cylindrical groove. The diameter of the spherical groove of the groove 13 is 1-1.5 cm. Each groove 13 is inserted with a removable and adjustable cylindrical auxiliary support 2 whose shape matches the groove 13. Each adjustable cylindrical auxiliary support 2 is located in the groove 13 at the trunk pad 12 and the head pad 11. The top surface of the support 2 has different heights and is adapted to the shape of the patient's shoulder and neck, thereby providing stable support to the patient's shoulder and neck, and effectively improving the patient's comfort when lying supine.

On the basis that the head pad 11 and the torso pad 12 are recessed to form a plurality of grooves 13 at positions corresponding to the patient's shoulders and neck, the head pad 11 is also recessed to form a plurality of grooves 13 at positions corresponding to the patient's head. The cylindrical auxiliary support 2 is inserted into the groove 13, which can effectively improve the patient's comfort when lying on his back and provide stable support for the patient's head, shoulders and neck. The grooves 13 on the head pad 11 are distributed in two rows, and the grooves 13 on the torso pad 12 are distributed in two rows. The grooves 13 distributed in the longitudinal direction and the grooves 13 distributed in the transverse direction form an inverted T-shaped structure. The groove 13 at the torso pad 12 is divided into two grooves 13a forming a row close to the head pad 11 and a plurality of grooves 13b far away from the head pad 11. The number of grooves 13b is greater than that of groove 1. The two grooves 13a are arranged in line with the grooves 13 at the head pad. After the cylindrical auxiliary support 2 is inserted into each corresponding groove 13, it can form a stable support for the patient's head, shoulders and neck, and can effectively improve the patient's comfort when lying on his back.

The cylindrical auxiliary support 2 includes a cylindrical part 21 at the upper part and a spherical part 22 at the lower part. The diameter of the cylindrical part 21 is smaller than the diameter of the spherical part 22. The lower end of the cylindrical part 21 is connected to the spherical part 22 as a whole. The cylindrical part 21 The upper end surface is a flat supporting surface. The spherical portion 22 fits into the spherical groove and can rotate the cylindrical auxiliary support 2 to change its direction, thereby better and more comfortably supporting the patient's head, shoulders and neck. The diameter of the cylindrical groove is larger than the diameter of the cylindrical part 21, forming a space so that the cylindrical auxiliary support 2 can rotate and change the direction, that is, the support angle of the cylindrical auxiliary support 2 can be adjusted, thereby better fitting the patient's head, shoulders and neck, and improving for more effective support.

The cylindrical part 21 and the spherical part 22 both include a low-density foam core material 2a and a skin 2b made of carbon fiber composite material wrapped around the low-density foam core material 2a. The low-density foam of the cylindrical part 21 and the spherical part 22 The core material has an integrated structure, and the skins of the cylindrical part 21 and the spherical part 22 have an integrated structure. The use of low-density foam core material 2a and skin 2b made of carbon fiber composite material can improve the stiffness of the columnar auxiliary support 2 structure while ensuring light weight, and also greatly reduce the dose impact, and can also be reused. It also ensures comfort.

In other embodiments, the grooves 13 on the head pad 11 are distributed in three rows, and the number of grooves 13 in each row is the same. The number of the grooves 13 gradually decreases from the side away from the head pad 11 to the side close to the head pad 11. The cylindrical auxiliary support 2 is inserted into each groove 13 and then adapts to the head, shoulders and neck, thereby supporting the patient's head, shoulders and neck. The whole part forms a stable support, which can effectively improve the patient's comfort when lying on his back.

In other embodiments, the spherical part 22 is a carbon fiber ball, and the top of the carbon fiber ball extends toward to form a carbon fiber column 22a. The cylindrical part 21 includes a carbon fiber tube 21a with open upper and lower ends. The lower part of the carbon fiber tube 21a is sleeved on the carbon fiber. The periphery of the column 22a is threadedly connected to the carbon fiber column 22a, so that the support height of the cylindrical auxiliary support 2 can be adjusted by rotating the carbon fiber column 22a, which can meet the requirements of raising the patient's head to different heights, so that the position of the tumor is within the deviation range, achieving accuracy The purpose of radiotherapy. The upper inner cavity of the carbon fiber tube 21a is filled with a low-density foam core material 2a. The low-density foam core material 2a is higher than the top of the carbon fiber tube 21a. The peripheries of the carbon fiber tube 21a and the low-density foam core material 2a are made of carbon fiber composite materials. The integrated skin 2b package ensures that the part with the patient is soft to ensure comfort.

In other embodiments, the spherical part 22 is a carbon fiber ball, and the top of the carbon fiber ball is recessed to form a concave groove 22b. The cylindrical part 21 includes a carbon fiber tube 21a with a closed lower end and an open upper end. The lower part of the carbon fiber tube 21a is inserted into The recessed groove 22b is threaded with the carbon fiber ball, so that the support height of the cylindrical auxiliary support 2 can be adjusted by rotating the carbon fiber column 22a, which can satisfy the need to raise the patient's head to different heights, so that the position of the tumor is within the deviation range, achieving precision The purpose of radiotherapy. The inner cavity of the carbon fiber tube 21a is filled with a low-density foam core material 2a. The low-density foam core material 2a is higher than the top of the carbon fiber tube 21a. The upper periphery of the carbon fiber tube 21a and the periphery of the low-density foam core material 2a are jointly made of carbon fiber composite. The skin 2b wrap made of material ensures that the part with the patient is soft to ensure comfort.

In other embodiments, the head pad 11 may have no groove 13 at the position corresponding to the patient's head, or may have the groove 13 but no cylindrical auxiliary support 2 is inserted into the groove 13 .

The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the above disclosed embodiments, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims (8)

1. A head and neck foam fixation device used in radiotherapy, including a postural fixation pad composed of a foam fixation bag and foam rubber contained in the foam fixation bag, and the postural fixation pad includes A head pad and a rectangular torso pad. The head pad is a hat-shaped structure connected to one end of the torso pad in the length direction and has a head groove. It is characterized in that: the head pad and the torso pad at least correspond to the patient. Multiple grooves are formed in the shoulder and neck positions, and the head pad is also recessed to form multiple grooves in positions corresponding to the patient's head. Each groove is inserted with a removable and adjustable device that matches the shape of the groove. The cylindrical auxiliary support includes a cylindrical part located at the upper part and a spherical part located at the lower part. The diameter of the cylindrical part is smaller than the diameter of the spherical part. The lower end of the cylindrical part is connected to the spherical part as one body. The upper end of the cylindrical part The end face is a flat support surface. The bottom of the groove is a spherical groove that matches the spherical part so that the cylindrical auxiliary support can rotate and change direction. The upper part of the groove is a cylindrical groove with a diameter larger than the diameter of the cylindrical part. 2. The head and neck foam fixation device for radiotherapy according to claim 1, characterized in that: the grooves at the head pad are distributed in at least two rows along the longitudinal direction, and the grooves at the torso pad are arranged in at least two rows. The grooves are distributed in at least two rows along the transverse direction, and the grooves distributed along the longitudinal direction and the grooves distributed along the transverse direction form an inverted T-shaped structure. 3. The head and neck foam fixation device used in radiotherapy as claimed in claim 2, characterized in that: the grooves at the torso pad are divided into at least two adjacent to the head pad to form a row. Groove one and a plurality of grooves two formed in a row away from the head pad. The number of grooves two is greater than the number of grooves one. The at least two grooves one are arranged in line with the grooves at the head pad. 4. The head and neck foam fixation device used in radiotherapy as claimed in claim 3, characterized in that: each adjustable cylindrical auxiliary device is located in the grooves of the trunk pad and the head pad. The top surface of the support is of different heights. 5. The head and neck foam fixation device for radiotherapy as claimed in claim 1, wherein the cylindrical part and the spherical part both comprise a low-density foam core material and are wrapped in a low-density foam core material. The outer skin is made of carbon fiber composite material, the low-density foam core material of the cylindrical part and the spherical part is an integrated structure, and the skin of the cylindrical part and the spherical part is an integrated structure. 6. The head and neck foam fixation device used in radiotherapy as claimed in claim 1, wherein the spherical part is a carbon fiber ball, the top of the carbon fiber ball extends towards to form a carbon fiber column, and the cylindrical part includes Carbon fiber tube, the lower part of the carbon fiber tube is set on the periphery of the carbon fiber column and is threadedly connected to the carbon fiber column. The upper inner cavity of the carbon fiber tube is filled with low-density foam core material. The low-density foam core material is higher than the top of the carbon fiber tube, and the carbon fiber tube and The periphery of the low-density foam core is collectively wrapped by a skin made of carbon fiber composite. 7. The foam fixation device for head and neck used in radiotherapy according to claim 1, characterized in that: the spherical part is a carbon fiber ball, the top of the carbon fiber ball is recessed to form a recessed groove, and the cylindrical part includes Carbon fiber tube, the lower part of the carbon fiber tube is inserted into the recessed groove and is threaded with the carbon fiber ball. The inner cavity of the carbon fiber tube is filled with low-density foam core material. The low-density foam core material is higher than the top of the carbon fiber tube, and the carbon fiber tube is The upper periphery and the periphery of the low-density foam core are wrapped together by a skin made of carbon fiber composite. 8. The head and neck foam fixation device for radiotherapy according to claim 1, characterized in that: the diameter of the spherical groove of the groove is 1-1.5cm, and the side of the foam fixation bag is An opening is provided and a zipper is provided at the opening.