CN217567171U

CN217567171U - Medical radiotherapy position fixing device

Info

Publication number: CN217567171U
Application number: CN202220462349.7U
Authority: CN
Inventors: 王伟; 柴瑞娥; 孙晓欢; 王中飞; 张特; 肖锋
Original assignee: Air Force Medical University of PLA
Current assignee: Air Force Medical University of PLA
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-10-14
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a medical radiotherapy position fixing device, including two light touch switches, cervical vertebra bending position is arranged in to light touch switch, is fixed in on the foaming glue forming die, and light touch switch and a DC power supply and LED lamp pearl constitute the series circuit. The utility model discloses can monitor cervical vertebra curvature repeatability in real time and indicate the characteristics that the technician in time revised patient's position when putting the position treatment many times.

Description

Medical radiotherapy position fixing device

Technical Field

The utility model belongs to the technical field of radiation therapy, in particular to medical radiotherapy position fixing device.

Background

During tumor radiotherapy, in order to ensure the accuracy of treatment, it is desirable that the radiotherapy position of the patient has high consistency when multiple irradiation is performed. Therefore, different auxiliary body position fixing devices are adopted according to the comfort of different parts and the body positions of the patient during the radiotherapy simulation positioning. Wherein, the head and neck tumor is fixed by adopting a mode of foaming glue and head, neck and shoulder thermoplastic films at present. In clinical work, the fact that the neck muscle of a patient with head and neck tumor is unconsciously stiff due to nerve radiation damage or epidermis connective tissue fibrosis and other reasons in the radiotherapy process, the lordotic curvature of the cervical vertebra of the patient is reduced, the body position repeatability is deteriorated in treatment, the curative effect is affected due to unreasonable distribution of treatment dose, and the toxic and side effects of radiotherapy are aggravated is found. The repeated consistency of the cervical curvature in the radiotherapy process of head and neck tumors is always the direction of clinical work exploration.

At present, the position fixing device is manufactured for the neck tumor by adopting a foam rubber and head, neck and shoulder thermoplastic film method, but the positioning error caused by the change of the cervical curvature of a patient cannot be effectively eliminated. The existing method is to guide the patient to do neck muscle group exercise and relieve muscle stiffness so as to improve the body position consistency, but how to quantify the effect in real time cannot be realized. The cone beam CT shooting and the positioning CT image are required to be registered to verify the body position repeatability, if the body position error is larger than the clinical requirement, a radiotherapy technician is required to reset, and the treatment time of a patient and the working efficiency of radiotherapy implementation are increased; and simultaneously, performing posture verification by using a secondary cone-beam CT (computed tomography), so that the patient is subjected to additional radiation dose. At present, no body position fixing device can monitor the repeatability of the cervical vertebra part in real time.

Disclosure of Invention

In order to overcome above technical problem, the utility model aims to provide a medical radiotherapy position fixing device can monitor cervical vertebra curvature repeatability in real time and indicate the characteristics that the technician in time revised patient's position when putting the position treatment many times.

In order to realize the purpose, the utility model discloses a technical scheme is:

a medical radiotherapy body position fixing device comprises two light-touch switches 1, wherein the light-touch switches 1 are arranged at the bending position of cervical vertebrae and fixed on a foaming glue forming die 2, and the light-touch switches 1, a direct-current power supply and LED lamp beads form a series circuit.

The surface of the foaming glue forming die 2 is of a groove structure, and the groove structure is attached to the head, neck and back of a human body.

A through hole 3 is formed in the foaming glue forming die 2, a lead 4 penetrates through the through hole 3, and the light-touch switch 1 is connected with a direct-current power supply and the LED lamp beads through the lead 4.

The soft touch switch 1 comprises a press button 5 on the surface, the press button 5 is arranged on a base 7 through a spring 6, a gap is reserved between the press button 5 and a pin 8, and the press button 5 is communicated with the pin 8 under the extrusion action of a human body to form a loop.

The beneficial effects of the utility model.

The radiotherapy body position fixing device is additionally provided with the light touch switch 1 on the basis of the existing foam rubber and head, neck and shoulder thermoplastic film body position fixing device to form a real-time monitoring circuit, and can give out the cervical vertebra curvature repeatability information of a patient in real time in a treatment room in the multiple positioning process of radiotherapy, so that the accuracy of the radiotherapy is improved, and the toxic and side reactions are reduced.

Meanwhile, a technician can adjust the body position of the patient in time according to the LED light signal, and the situation that whether the cervical vertebra curvature of the patient is attached to the body position fixing mold cannot be judged is avoided, the repeated body position repeatability is verified by shooting the cone beam CT for many times, the radiation dose of the patient is reduced, the radiotherapy implementation working efficiency is improved, and the workload of a radiotherapy technician is reduced.

Description of the drawings:

fig. 1 is a working schematic diagram of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Fig. 3 is a schematic diagram of a structure of the tact switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3:

when a patient is subjected to CT simulation positioning before radiotherapy to manufacture a fixed film, a module with the same shape as a touch-press type switch is fixed on the cervical vertebra of the patient by a medical adhesive tape. Mixing the foaming glue AB and glue to generate chemical reaction, curing the expanded foaming glue AB according to the supine body type of a patient to form a foaming glue forming die 2, and simultaneously forming two grooves in which the touch-press type switches can be embedded. A hole is drilled at the bottom of the groove, two touch-press switches, a direct-current power supply and an LED lamp bead form a loop through a lead 4,

in the accelerator positioning treatment process, a radiotherapy technician can judge the consistency and the repeatability of the body position of a patient according to the light emitting condition of the LED lamp beads after the patient lies in the foaming adhesive forming grinding tool. In the process of radiotherapy positioning treatment, when a patient lies in the foam rubber forming die 2, if the body position of the patient is the same as that of positioning, the neck and the cone of the patient can touch and press the soft touch switch 1 below the patient, the loop is switched on, and the LED lamp is electrified and emits light; if the patient is because reasons such as radiation damage, cervical vertebra curvature and foamed plastic forming die 2 do not laminate, then light touch switch 1 disconnection, the LED lamp is luminous, and suggestion technician patient position repeatability is poor, need to put the position again and revise the position, therefore the position repeatability of technician real-time supervision patient cervical vertebra portion when can putting in the treatment room.

Claims

1. The medical radiotherapy body position fixing device is characterized by comprising two light-touch switches (1), wherein the light-touch switches (1) are arranged at the bending position of the cervical vertebra and fixed on a foam rubber forming mold (2), and the light-touch switches (1), a direct-current power supply and LED lamp beads form a series circuit.

2. The medical radiotherapy body position fixing device according to claim 1, wherein the surface of the foam rubber molding die (2) is of a groove structure, and the groove structure is attached to the head, neck and back of a human body.

3. The medical radiotherapy body position fixing device according to claim 1, wherein the through hole (3) is formed in the foam rubber forming mold (2), a lead (4) penetrates through the through hole (3), and the light-touch switch (1) is connected with a direct current power supply and the LED lamp bead through the lead (4).

4. The medical radiotherapy body position fixing device according to claim 1, characterized in that the light touch switch (1) comprises a pressing button (5) on the surface, the pressing button (5) is arranged on the base (7) through a spring (6), a gap is left between the pressing button (5) and the pin (8), and the pressing button (5) is communicated with the pin (8) under the squeezing action of a human body to form a loop.