Turnover type neck tumor radiotherapy deviceTechnical Field
The invention relates to the technical field of medical instruments, in particular to a turnover type neck tumor radiotherapy device.
Background
Radiation therapy is one of the main means of cancer therapy, and unlike surgery, radiation therapy is the use of radiation to kill cancer cells, and the appearance and function of normal tissues and organs may often be preserved, so radiation therapy is also called as a non-knife cancer resection. For example, in early stage vocal cord cancer, the radiation therapy can cure the cancer, and the patient can be relieved from laryngectomy, thereby keeping the vocal function of the patient.
Neck treatment is an integral part of head and neck cancer treatment, and it means that No patients with No or marked enlarged lymph nodes should be included, not only when there is a definite cervical metastasis. After pathological examination of selective cervical cleaning specimens in No cases of head and neck cancer, 16-66% of lymph node sublineal cancer metastases vary according to the primary cancer. No case only treated with primary focal radical therapy, one third of the cases were transferred from the neck, and the treatment effect was poor. If the disease is treated by routine selective cervical cleaning or preventive cervical radiotherapy, the recurrence rate is obviously reduced. For example, the research of the university of Virginia in America discovers that the neck control rate of the No case of tongue cancer is 38% when the neck is not treated or is limited after primary focus radical treatment, and the neck control rate is as high as 95% by adopting full-neck preventive radiotherapy or radiotherapy and neck cleaning operation. For the head and neck cancer cases with cervical lymph metastasis, neck treatment is more indispensable, and the value is self-evident.
Chinese patent application CN105749433B discloses a neck tumour radiotherapy device, targeted adoption arc fixed plate to the neck tumour, be equipped with two spouts in the side of arc baffle, and be equipped with the rack in first spout, the output shaft tip of biax motor has cup jointed the curved gear, can make the biax motor rotate between the arc baffle through arc rack and gear engagement, be equipped with the radiotherapy device in the side of biax motor, the radiotherapy device rotates along with the biax motor, can all-roundly carry out the radiotherapy to the neck. It is a dynamic radiotherapy device and can be flexibly adjusted in the treatment process. However, the moving structure of the radiotherapy mechanism is complex, and only the upper part is provided with the radiation device, so that the radiotherapy can not be carried out on the back neck, and if the radiation device is additionally arranged below, the cost and the structural complexity are both greatly increased.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a turnover type neck tumor radiotherapy device.
In order to solve the technical problems, the invention provides the following technical scheme: convertible neck tumour radiotherapy device has:
a bed body for tumor patients to lie for radiotherapy;
a radiation therapy assembly for performing localized radiation therapy on a neck of a patient;
a head support plate for changing the posture of the head of the patient;
the radiotherapy assembly comprises a guide rail with a semi-ring structure and a radiotherapy irradiator, and the radiotherapy irradiator is arranged on the guide rail in a sliding manner;
two ends of the guide rail are hinged on the bed body through a rotating shaft, and the guide rail can be turned over from the upper part of the bed body to the lower part of the bed body;
the head supporting plate is hinged at the head end of the bed body through a rotating shaft and can be turned upwards/downwards;
the bed body is provided with an irradiation hole which can make the radiotherapy irradiator irradiate the tumor part from the lower part of the bed body.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the first motor is arranged on one side of the bed body, and an output shaft of the first motor is in transmission connection with a rotating shaft on one side of the guide rail through a speed reducer.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the second motor is used for driving the head supporting plate to overturn upwards/downwards, and an output shaft of the second motor is in transmission connection with a rotating shaft on one side of the head supporting plate through a speed reducer.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the limit angle of the head support plate turning upward is 20 °, and the limit angle of the head support plate turning downward is 30 °.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the guide rail is the U-shaped track that two vertical arms and the guide arm of erectting between two vertical arms constitute, and the vertical arm of guide rail is articulated through pivot and bed body, and the radiotherapeutic irradiator slides and sets up on the guide arm of guide rail.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the radiotherapy irradiator is arranged on the guide arm of the guide rail through an electric linear guide rail.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the guide rail is the semicircle annular orbit, and the interior anchor ring of guide rail is provided with the spout, and the spout comprises the spacing groove along guide rail length direction and the neck groove of intercommunication spacing groove and guide rail interior anchor ring, and the radiotherapy irradiator has one and inlays the base of establishing at the spacing inslot.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: have first receipts rope motor and second and receive the rope motor, first receipts rope motor and second receive the rope motor and arrange the both ends of guide rail respectively in, and first receipts rope motor and second receive the rope motor and be connected with the base both sides of radiotherapy irradiator through the control rope of wearing to locate the spacing inslot respectively.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the rope winding machine is provided with a controller, and the controller is electrically connected with a first motor, a second motor, an electric linear guide rail, a first rope winding motor and a second rope winding motor.
As the further optimization of the turnover type neck tumor radiotherapy device of the invention: the control console comprises a display and operation buttons, and the display and the operation buttons are electrically connected with the controller.
Advantageous effects
The neck tumor radiotherapy device is provided with the turnover guide rail, a radiotherapy irradiator can slide on the guide rail, the irradiation position is flexibly adjusted, the guide rail can be turned over from the upper part of the bed body to the upper part of the bed body, and radiotherapy can be performed on both the front neck and the back neck of a patient;
the neck tumor radiotherapy device of the method is provided with a head support plate capable of changing the head posture of the patient, and the front neck or the back neck of the patient can be exposed as much as possible through the change of the head posture of the patient, and the head of the patient is far away from the irradiation position as much as possible.
Drawings
FIG. 1 is a schematic view showing the construction of a radiotherapy apparatus for tumor (initial state) according to example 1;
FIG. 2 is a schematic view showing the structure of a tumor radiotherapy apparatus according to example 1 (anterior cervical radiotherapy state);
FIG. 3 is a schematic view showing the construction of a tumor radiotherapy apparatus according to embodiment 1 (in a state of back neck radiotherapy);
FIG. 4 is a schematic structural view of a tumor radiotherapy apparatus according to example 2 (initial state);
FIG. 5 is a schematic view showing the structure of a tumor radiotherapy apparatus according to example 2 (anterior cervical radiotherapy state);
FIG. 6 is a schematic view showing the structure of a tumor radiotherapy apparatus according to example 2 (in a state of back neck radiotherapy);
FIG. 7 is a schematic view showing the connection between a guide rail and a radiotherapy illuminator in the radiotherapy apparatus for tumor in accordance withembodiment 2;
the labels in the figure are: 1. bed body, 2, radiotherapy subassembly, 3, head backup pad, 4, first motor, 5, electronic linear guide, 6, second motor, 7, shine hole, 8, first receipts rope motor, 9, second receipts rope motor, 101, bed board, 102, landing leg, 103, pulley, 201, guide rail, 202, radiotherapy irradiator, 203, spout.
Detailed Description
The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.
Example 1
As shown in the figure: the utility model provides a convertible neck tumour radiotherapy device for tumour patient's neck part radiotherapy, radiotherapy device have can supply tumour patient to lie and carry out radiotherapy'sbed body 1, carry out part radiotherapy'sradiotherapy subassembly 2, can changehead supporting plate 3, controller and the operation panel of patient's head posture to patient's neck.
Thebed body 1 comprises abed board 101 for supporting the body of a patient and a supportingleg 102 for supporting thebed board 101, wherein the supportingleg 102 is provided with apulley 103 for moving thebed body 1, and thepulley 103 is provided with a necessary brake device for realizing the stability of thebed body 1 when thebed body 1 is moved to a required position.
Radiotherapy subassembly 2 includes semi-ring structure'sguide rail 201 andradiotherapy irradiator 202, andradiotherapy irradiator 202 slides and sets up onguide rail 201, and theguide rail 201 both ends articulate onbed body 1 through the pivot, andguide rail 201 can be bybed body 1 top upset tobed body 1 below. Theguide rail 201 is hinged at the head end of thebed board 101 and can turn over up and down around the head end of thebed body 1. Thebed plate 101 is provided with anirradiation hole 7 which can make theradiotherapy irradiator 202 irradiate the tumor part from the lower part of thebed body 1.
The turnover of theguide rail 201 is driven by the first motor 4, the first motor 4 is arranged on one side of thebed body 1, and the output shaft of the first motor is in transmission connection with the rotating shaft on one side of theguide rail 201 through the speed reducer. The first motor 4 adopts a servo motor, a controller of the motor is electrically connected with a general controller of the radiotherapy device, and a doctor can accurately control the rotating angle of the rotating shaft through the controller and an operating system so as to accurately control the overturning angle of theguide rail 201. The output shaft of the first motor 4 drives the rotating shaft to rotate, and further drives theguide rail 201 to turn over, so that theguide rail 201 can be turned over from the upper part of thebed body 1 to the lower part of thebed body 1.
Theguide rail 201 is a U-shaped rail (semi-rectangular annular rail) composed of two vertical arms and a guide arm erected between the two vertical arms, the vertical arm of theguide rail 201 is hinged with thebed body 1 through a rotating shaft, and theradiotherapy irradiator 202 is installed on the guide arm of theguide rail 201 through the electriclinear guide rail 5. Theradiotherapy irradiator 202 can move along the length direction of the guide arm under the driving of the electriclinear guide rail 5, the controller of the electriclinear guide rail 5 is electrically connected with the general controller of the radiotherapy device, and a doctor can accurately control the position of theradiotherapy irradiator 202 on theguide rail 201 through the controller and the operating system. Theradiotherapy illuminator 202 is a conventional art for external radiotherapy of a tumor site, and its detailed structure will not be described in detail.
In order to fully expose the front neck or the back neck of a patient in the radiotherapy process, the head end of thebed body 1 is also provided with ahead supporting plate 3 capable of changing the head posture of the patient, when the patient lies on thebed body 1, the head of the patient is placed on thehead supporting plate 3, in an initial state, thehead supporting plate 3 is arranged in parallel with thebed plate 101 of thebed body 1, when the radiotherapy is required to be carried out on the front neck of the patient, thehead supporting plate 3 is turned downwards, the head of the patient can descend along with thehead supporting plate 3, and then the front neck is fully exposed. When the back neck of the patient needs to be subjected to radiotherapy, thehead support plate 3 is turned upwards, the head of the patient can be lifted along with thehead support plate 3, and then the back neck of the patient is fully exposed.
Thehead supporting plate 3 is turned over and driven by asecond motor 6, and an output shaft of thesecond motor 6 is in transmission connection with a rotating shaft on one side of thehead supporting plate 3 through a speed reducer. Thesecond motor 6 adopts a servo motor, a controller of the motor is electrically connected with a general controller of the radiotherapy device, and a doctor can accurately control the rotating angle of the rotating shaft through the controller and an operating system so as to accurately control the overturning angle of thehead supporting plate 3. The limit angle of the upward turn of thehead support plate 3 is 20 °, and the limit angle of the downward turn of thehead support plate 3 is 30 °. The specific overturning angle is determined according to the actual feeling of the patient, so that the discomfort of the patient caused by an overlarge overturning angle is avoided.
The controller is a control center of the radiotherapy device, and is mainly used for adjusting the positions of theguide rail 201, thehead support plate 3 and theradiotherapy irradiator 202, and sending an operation instruction through the operation table to enable the first motor 4, thesecond motor 6 or the electriclinear guide rail 5 to act. The operation panel is this radiotherapy device's auxiliary fixtures, and mainly used doctor is to radiotherapy device's control and operation, and the operation panel includes display and operating button at least, and display and operating button all are connected with the controller electricity. The console should also include other necessary components, which can be configured according to the actual situation and will not be described in detail herein.
Example 2
As shown in the figure: the overall structure of the cervical tumor radiotherapy device of this embodiment is the same as that ofembodiment 1, and the difference is that:guide rail 201 is semicircle circular orbit, and the interior anchor ring ofguide rail 201 is provided withspout 203, and spout 203 comprises the spacing groove alongguide rail 201 length direction and the neck groove of intercommunication spacing groove andguide rail 201 interior anchor ring, andradiotherapy irradiator 202 has one and inlays the base of establishing at the spacing inslot, and the base is spherical structure. The limiting groove is a main body of the slidinggroove 203, the base of theradiotherapy irradiator 202 can slide in the limiting groove, so that theradiotherapy irradiator 202 can slide on theguide rail 201, and the neck groove is used for the passage of a connecting piece between the base of theradiotherapy irradiator 202 and theradiotherapy irradiator 202. The position ofradiotherapy irradiator 202 is controlled through firstreceipts rope motor 8 and secondreceipts rope motor 9, and the both ends ofguide rail 201 are arranged respectively in to firstreceipts rope motor 8 and secondreceipts rope motor 9, and firstreceipts rope motor 8 and secondreceipts rope motor 9 are connected with the base both sides ofradiotherapy irradiator 202 through the control rope of wearing to locate the spacing inslot respectively. When the position of theradiotherapy irradiator 202 needs to be adjusted, the firstrope winding motor 8 or the secondrope winding motor 9 is started, the base which drags theradiotherapy irradiator 202 slides in the limit groove, the position adjustment of theradiotherapy irradiator 202 is realized, and when the radiotherapy irradiator needs to move in the opposite direction, the rope winding motor at the other end is started.
Example 3
As shown in the figure: the overall structure of the cervical tumor radiotherapy device of this embodiment is the same as that ofembodiment 1, and the difference is that: theradiotherapy irradiator 202 is provided with a camera, so that the situation of the radiotherapy part can be observed at any time.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.