Body position fixing device for spiral tomography of patient with large breasts after breast-conserving surgery

Abstract

The invention provides a body position fixing device for spiral tomography of patient with large breasts after breast-conserving surgery of breast cancer. According to the body position fixing device,a prone design is adopted, and a 3D printed breast fixing cover and a breast tray are correspondingly and specially arranged for an affected side breast and a healthy side breast of the patient. According to the body position fixing device, the influence of respiratory movement on the breast position can be avoided, an arc holding claw is firstly used for gathering and locating the affected sidebreast, then the personalized breast fixing cover is installed to completely fix the whole affected side breast, when the spiral tomography is conducted, the phenomenon of breast swing can be avoided,it can be guaranteed that the affected side breast is consistent with positioning of a radiotherapy target area in height during each radiotherapy, thus the repeated positioning accuracy is high, andthe needs of intensity-modulated radiotherapy of a TomoTherapy system can be effectively met; the breast tray is directly installed on the healthy side breast, the healthy side breast is lifted and covered by the breast tray, and thus the healthy side breast can be prevented from entering the field of irradiation due to swing.

Description

technical field [0001] The invention relates to a medical body position fixation device, in particular to a body position fixation device for helical tomotherapy for patients with large breasts after breast conserving surgery, and belongs to the technical field of medical devices. Background technique [0002] In recent years, the proportion of breast cancer patients receiving breast-conserving surgery has gradually increased, and radiotherapy after breast-conserving surgery is an important treatment measure to prevent local recurrence of breast cancer after breast-conserving surgery. With the advancement of medical technology, more and more Breast cancer patients choose more advanced helical tomotherapy when undergoing breast-conserving postoperative radiotherapy. Helical tomotherapy is a tumor radiation therapy method based on the helical tomotherapy system TomoTherapy, which can irradiate tumors with 360-degree focused tomography under the guidance of spiral CT, so as to ...

AI Technical Summary

Problems solved by technology

[0004] This type of breast bracket can only fix the patient's supine position, but cannot directly fix the patient's breast. For some patients with large breasts, especially middle-aged and elderly women with obesity, their breast skin is loose and their breasts are too large. And obviously sagging, the breast tissue has a large range of activity on the chest. Therefore, even if the head, shoulders and back of the patient are fixed every time the patient is positioned for radiotherapy, the relative position of the breast to the chest is still not fixed. , and the respiratory movement will also affect the position of the breast. In addition, when the TomoTherapy system is working, the treatment bed will send the patient into the ring frame in a straight line, and the radiotherapy rays will irradiate the tumor in a spiral ring. The movement of the treatment bed will cause the patient's breast Involuntary swinging occurs. At this time, the position of the affected breast is not easy to fix, and the healthy breast may also enter the irradiation field due to swinging. Therefore, when patients with large breasts use the current breast bracket for helical tomotherapy, it is easy to cause Set-up errors reduce the accuracy of repeated set-up of the ipsilateral breast position and radiotherapy target area, which cannot meet the accuracy required by the TomoTherapy system for intensity-modulated radiation therapy

In order to solve the problem of breast swing, some breast brackets are also equipped with a device for clamping and pulling the patient's nipple to fix the position of the patient's breast on the chest. However, the surgical incision for breast conserving surgery is generally set near the nipple. Clamping and pulling the nipple may easily cause the surgical incision to rupture again, and the comfort of the patient is obviously not good, and the clinical effect is poor

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