Adjustable radiotherapy positioning device

Abstract

The utility model provides an adjustable radiotherapy positioning device, which belongs to the technical field of radiotherapy positioning and comprises a main body, a C-shaped positioning ring is arranged in the main body in a sliding manner, and two ends of the positioning ring penetrate through the main body in a sliding manner; clamping plates are arranged on the inner walls of the two sides of the positioning ring, the two clamping plates move face to face or back to back, air bags are installed on the opposite sides of the two clamping plates, and each clamping plate is provided with an air conveying assembly; the gas transmission assembly comprises a fixed sleeve, the fixed sleeve is fixedly arranged on the side wall of the positioning ring, and a connecting pipe slidably penetrates through the fixed sleeve; one end of the connecting pipe penetrates through the fixed sleeve in a sealed and sliding manner and is communicated with the air bag, and the other end of the connecting pipe is fixedly provided with a piston; the piston divides the fixing sleeve into a first cavity and a second cavity, the first cavity is provided with an air conveying hole, and the second cavity is provided with an air inlet hole communicated with the connecting pipe. In the clamping process of the two clamping plates, air in the fixing sleeve can be conveyed into the air bag, and the air bag is attached to the head of the patient.

Description

Technical Field

[0001] This utility model belongs to the field of radiotherapy positioning technology, specifically relating to an adjustable radiotherapy positioning device. Background Technology

[0002] Radiation therapy for tumors is a local treatment method that uses radiation to treat tumors. The radiation includes alpha, beta, and gamma rays produced by radioactive isotopes, as well as X-rays, electron beams, proton beams, and other particle beams produced by various X-ray therapy machines or accelerators. Approximately 70% of cancer patients require radiation therapy during their cancer treatment. Radiation therapy requires precise head positioning; however, current positioning devices generally use a direct clamping method with a positioning plate, which can easily cause injury to the patient's head and cannot fit the different heads of different patients.

[0003] A patent with publication number CN111840822A discloses a radiotherapy positioning device, which includes a base plate, a headrest, a second threaded rod, a second fixing seat, and head positioning pads. In use, the patient's head is placed on the headrest, and the second threaded rods on both sides of the headrest are rotated. Through the threaded engagement between the second threaded rods and the second fixing seat, the two head positioning pads move towards the headrest, thereby clamping and limiting the patient's head.

[0004] However, this direct clamping method can easily cause head injuries to patients, posing a safety hazard. In addition, the two head positioning pads cannot fit the faces of different patients well, resulting in poor comfort and practicality during use. Utility Model Content

[0005] To address the problems existing in the background art, this utility model provides an adjustable radiotherapy positioning device.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An adjustable radiotherapy positioning device includes a main body. A C-shaped positioning ring is slidably disposed within the main body, with both ends of the positioning ring slidingly penetrating the main body. An adjustment component acting on the positioning ring is disposed within the main body. Clamping plates are provided on the inner walls of both sides of the positioning ring. The two clamping plates can move towards or away from each other. An airbag is installed on the opposite side of the two clamping plates. Each clamping plate is connected to a gas delivery component on its side wall. The gas delivery component includes a fixed sleeve. The fixed sleeve is fixedly disposed on the side wall of the positioning ring. A connecting tube is slidably disposed within the fixed sleeve. One end of the connecting tube is sealed and slidably disposed through the fixed sleeve and communicates with the airbag. A piston is fixedly disposed at the other end of the connecting tube and is sealed and slidably disposed within the fixed sleeve. The piston divides the fixed sleeve into a first chamber and a second chamber. The first chamber has a gas delivery port communicating with the outside, and the second chamber has a gas inlet port communicating with the connecting tube.

[0008] Further, the two clamping plates are fixedly connected with the side wall of the corresponding positioning ring through the electric push rod.

[0009] Further, a plurality of limiting columns are fixedly arranged at one end of each of the pistons close to the connecting pipe, and a heating plate is arranged on the clamping plate.

[0010] Further, the adjusting assembly comprises a motor, a relief groove is formed in the main body, the motor is fixedly installed in the relief groove, and a gear is coaxially and fixedly arranged on the output shaft of the motor; a tooth ring is fixedly arranged on the outer surface of the positioning ring, and the tooth ring is engaged with the gear.

[0011] The present application has the following beneficial effects:

[0012] During the process of approaching each other for clamping of the two clamping plates, the pistons slide in the fixed sleeve, so that the gas in the fixed sleeve is delivered to the air bag, the air bag is inflated and adheres to the head of the patient, the inflated air bag not only prevents the clamping force of the clamping plate from being too large to cause damage to the head of the patient, but also better adapts to the heads of different patients, thereby improving the comfort. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0014] Figure 1 is a schematic diagram of the overall structure of the present application;

[0015] Figure 2 is a schematic diagram of the adjusting assembly structure of the present application;

[0016] Figure 3 is a schematic diagram of the internal structure of the fixed sleeve of the present application Figure 2 is a partial enlarged schematic diagram of position A in the present application;

[0017] Figure 4 is a schematic diagram of the internal structure of the fixed sleeve of the present application

[0018] Figure 5 is a partial enlarged schematic diagram of position B in the present application. Figure 4

[0019] BRIEF DESCRIPTION OF DRAWINGS

[0020] ​1. Main body; 2. Control panel; 3. Gear ring; 4. Positioning ring; 5. Electric push rod; 6. Fixing sleeve; 7. Clamping plate; 8. Airbag; 9. Motor; 10. Gear; 11. Relief groove; 12. Slide groove; 13. Connecting pipe; 14. Heating plate; 15. Limiting post; 16. Piston; 17. Air inlet; 18. Air outlet; 19. First chamber; 20. Second chamber. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] like Figures 1-5 As shown, the technical solution adopted by this utility model is as follows: an adjustable radiotherapy positioning device, including a main body 1, a sliding groove 12 is opened in the main body 1, a "C"-shaped positioning ring 4 is slidably set in the sliding groove 12, the sliding groove 12 is adapted to the positioning ring 4, and both ends of the positioning ring 4 slide to the outside of the main body 1.

[0023] A clamping plate 7 is slidably arranged on both inner walls of the positioning ring 4. The two clamping plates 7 are slidably arranged facing each other or back to back. An airbag 8 is fixedly arranged on the facing side of the two clamping plates 7. The two clamping plates 7 are fixedly connected to the corresponding side wall of the positioning ring 4 through an electric push rod 5.

[0024] Each clamping plate 7 is provided with an air supply assembly between itself and the side wall of the connected positioning ring 4. The air supply assembly includes a fixed sleeve 6, which is fixedly installed on the side wall of the positioning ring 4. A connecting pipe 13 is slidably installed inside the fixed sleeve 6. The connecting pipe 13 is hollow, with one end of the connecting pipe 13 extending slidably and sealingly to the outside of the fixed sleeve 6 and communicating with the inside of the piston 16. The piston 16 is fixedly installed at the other end of the connecting pipe 13 and is slidably and sealingly installed inside the fixed sleeve 6. The piston 16 divides the inside of the fixed sleeve 6 into a first chamber 19 and a second chamber 20. An air supply hole 18 is provided in the first chamber 19 to communicate with the outside, and an air inlet 17 is provided in the second chamber 20 to communicate with the inside of the connecting pipe 13.

[0025] In addition, several limiting posts 15 are fixedly installed at one end of each piston 16 near the connecting tube 13. The limiting posts 15 are used to prevent the part of the connecting tube 13 with the air inlet 17 from slipping out of the fixing sleeve 6. A heating plate 14 is installed on the clamping plate 7. The heating plate 14 can transfer heat to the airbag 8, thereby warming and applying heat to the patient's head that is being squeezed. The effect of heat application can dilate the blood vessels in the squeezed area to facilitate blood circulation.

[0026] The main body 1 is provided with an adjusting assembly for adjusting the angle of the positioning ring 4 when clamping.

[0027] The control panel 2 is electrically connected with the electric push rod 5 and the motor 9.

[0028] Working principle: when in use, the patient places the head in the positioning ring 4, and starts the electric push rod 5, which pushes the two clamping plates 7 to move closer to each other, thereby moving closer to the patient's head.

[0029] In this process, the clamping plate 7 will drive the connecting pipe 13 to move synchronously, so that the piston 16 seals and slides in the fixed sleeve 6, so that the outside air enters the first chamber 19 through the gas inlet hole 18, and the air in the second chamber 20 is transported to the air bag 8 through the air inlet hole 17 and the connecting pipe 13, so that the air bag 8 is inflated and better fits the heads of different patients, which can increase the clamping stability of the clamping plate 7 to the patient's head. At the same time, it can also prevent the clamping plate 7 from causing damage to the patient's head due to excessive clamping force, and improve the practicability of the device.

[0030] At the same time, the heating plate 14 is started, which heats the gas in the air bag 8, thereby heating and compressing the patient's head, and using the effect of hot compress to dilate the blood vessels of the compressed part to facilitate blood circulation, thereby improving the patient's use comfort.

[0031] When the angle of the patient's head needs to be adjusted, the motor 9 is started, which drives the gear 10 to rotate, and the gear 10 drives the gear ring 3 to rotate, so that the positioning ring 4 rotates, thereby completing the adjustment of the angle of the patient's head.

[0032] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An adjustable radiotherapy positioning device, characterized in that, The utility model provides a kind of adjustable C type positioning ring, including main body (1), the "C" type positioning ring (4) is arranged in sliding in the main body (1), both ends of positioning ring (4) are slidably penetrated through main body (1), and adjusting assembly is provided in main body (1) and acts on positioning ring (4);The inner wall of the two sides of positioning ring (4) is equipped with clamping plate (7), two clamping plates (7) move towards each other or away from each other, and the opposite sides of two clamping plates (7) are mounted air bag (8), and each clamping plate (7) is equipped with gas delivery assembly with the side wall connected;Gas delivery assembly includes fixed sleeve (6), fixed sleeve (6) is fixedly arranged in the side wall of positioning ring (4), and connecting pipe (13) is slidably penetrated and arranged in fixed sleeve (6);Connecting pipe (13) one end seal slidingly penetrates fixed sleeve (6) and is communicated with air bag (8), and the other end of connecting pipe (13) is fixedly arranged piston (16), and piston (16) is slidably arranged in fixed sleeve (6);The piston (16) divides fixed sleeve (6) into first chamber (19) and second chamber (20), first chamber (19) is opened gas hole (18) and communicated with outside, and second chamber (20) is opened inlet (17) and communicated with connecting pipe (13).

2. The adjustable radiotherapy positioning device of claim 1, wherein, Two clamping plates (7) are fixedly connected with the side wall of corresponding positioning ring (4) by installing electric push rod (5).

3. The adjustable radiotherapy positioning device of claim 1, wherein, The one end of each piston (16) near connecting pipe (13) is fixedly provided with a plurality of limit posts (15), and heating plate (14) is installed on clamping plate (7).

4. The adjustable radiotherapy positioning device of claim 1, wherein, The adjusting assembly includes motor (9), and the accommodating groove (11) is opened in the main body (1), the motor (9) is fixedly installed in the accommodating groove (11), and the output shaft of motor (9) is coaxially fixedly provided with gear (10);The outer surface of positioning ring (4) is fixedly provided with gear ring (3), and gear ring (3) is engaged with gear (10).

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