A head positioning device for a gamma knife

Abstract

This application discloses a head positioning device for Gamma Knife radiosurgery, belonging to the field of medical auxiliary device technology. The device includes a carrier plate with limiting shafts installed on both sides. Positioning wheels are rotatably connected to the ends of the limiting shafts, and the positioning wheels are eccentrically rotatably connected to the limiting shafts. A lever is fixedly connected to one side of each positioning wheel. A mounting base is fixedly connected to the upper part of the carrier plate, and a support frame is fixedly mounted on the mounting base. A fixing frame is fixedly mounted on one side of the support frame. Two positioning wheels are provided on each side of the carrier plate, and connecting rods are provided on both sides of the carrier plate. The connecting rods are rotatably connected to the two positioning wheels on the same side via levers. This device is suitable for radiotherapy equipment with positioning grooves on both sides of the bed board. By placing the carrier plate on top of the bed board and pushing the connecting rods on both sides of the carrier plate, the levers push the positioning wheels to rotate eccentrically relative to the limiting shafts, causing the positioning wheels to engage in the positioning grooves on the bed board, thus fixing the device onto the bed board.

Description

Technical Field

[0001] This application relates to the field of medical assistive device technology, and more specifically, to a head positioning device for a gamma knife. Background Technology

[0002] When using Gamma Knife for radiotherapy of head tumors, in order to ensure the accuracy of the treatment, it is necessary to fuse Gamma Knife with CT images. That is, the patient wears a stereotactic frame for Gamma Knife and scans the image on a CT scanner. The traditional approach uses a CT adapter to install and fix the stereotactic frame for Gamma Knife.

[0003] A search revealed that Chinese patent CN202446103U discloses a head CT examination locator. This device has telescopic arms on both sides of the headrest, and positioning hooks at the front end of the telescopic arms. The telescopic arms are adjusted so that the positioning hooks are hung on both sides of the bed and the position of the headrest is fixed by positioning nuts.

[0004] The aforementioned device lacks an effective limiting structure between the hook and the bed board when fixing the headrest position, which makes the headrest position prone to disturbance, hindering Gamma Knife radiotherapy for head tumors. Therefore, we propose a head positioning device for Gamma Knife radiotherapy. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide a head positioning device for Gamma Knife to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] A gamma knife head positioning device includes a carrier plate, with limit shafts installed on both sides of the carrier plate. A positioning wheel is rotatably connected to the end of the limit shaft. The positioning wheel is eccentrically rotatably connected to the limit shaft. A lever is fixedly connected to one side of the positioning wheel. A mounting base is fixedly connected to the upper part of the carrier plate. A support frame is fixedly installed on the mounting base. A fixing frame is fixedly installed on one side of the support frame.

[0010] As an optional solution to the technical solution of this application, two positioning wheels are provided on both sides of the carrier plate, and a connecting rod is provided on both sides of the carrier plate. The connecting rod is rotatably connected to the two positioning wheels on the same side through a lever.

[0011] As an optional solution to the technical solution of this application, the mounting base has a mounting groove in the middle, and the support frame is rotatably installed in the mounting groove.

[0012] As an optional solution to the technical solution of this application, a gap is provided between the bottom of the support frame and the top of the mounting base, and a rotating shaft is provided on the side of the support frame, and the support frame is rotatably connected to the mounting base through the rotating shaft.

[0013] As an optional solution to the technical solution of this application, a connector is fixedly connected to one side of the support frame, a first rotating rod is rotatably connected to one side of the connector, a second rotating rod is rotatably connected to one side of the mounting base, an adjusting rod is rotatably connected to the middle of the second rotating rod, and the adjusting rod passes vertically through the second rotating rod and the first rotating rod, and is threadedly connected to the first rotating rod.

[0014] As an optional solution to the technical solution of this application, the support frame is provided with a slot, the slot opening is set upward, and the fixing frame is inserted and engaged with the support frame through the slot.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1) This application installs the device by setting positioning wheels on both sides of the carrier plate. The positioning wheels rotate eccentrically and are engaged in the positioning groove starting from the side of the bed plate. This increases the fixing effect of the device and also increases the installation efficiency.

[0018] 2) This application sets up an adjustment rod, and by rotating the adjustment rod, the distance between the first rotating rod and the second rotating rod can be adjusted, which can drive the support frame to rotate, change the support height of the fixed frame for the patient's head, and increase the accuracy of radiotherapy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a gamma knife head positioning device;

[0020] Figure 2 This is a schematic diagram of the positioning wheel structure of a gamma knife head positioning device;

[0021] Figure 3 This is a schematic diagram of the mounting base structure for a gamma knife head positioning device;

[0022] In the diagram: 1. Carrier plate; 2. Limiting shaft; 3. Positioning wheel; 301. Lever; 4. Mounting base; 401. Mounting groove; 402. Second rotating rod; 5. Support frame; 501. Rotating shaft; 6. Fixing frame; 7. Connecting rod; 8. Connecting piece; 801. First rotating rod; 9. Adjusting rod. Detailed Implementation

[0023] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0024] Please see Figure 1 and Figure 2 This application provides a head positioning device for a gamma knife, including a carrier plate 1, with limit shafts 2 installed on both sides of the carrier plate 1. A positioning wheel 3 is rotatably connected to the end of the limit shaft 2. The positioning wheel 3 is eccentrically rotatably connected to the limit shaft 2. A lever 301 is fixedly connected to one side of the positioning wheel 3. A mounting base 4 is fixedly connected to the upper part of the carrier plate 1. A support frame 5 is fixedly installed on the mounting base 4. A fixing frame 6 is fixedly installed on one side of the support frame 5.

[0025] Preferably, each side of the carrier plate 1 is provided with two positioning wheels 3, and each side of the carrier plate 1 is provided with a connecting rod 7. The connecting rod 7 is rotatably connected to the two positioning wheels 3 on the same side through a lever 301.

[0026] This device is suitable for radiotherapy equipment with positioning grooves on both sides of the bed board. By placing the carrier plate 1 on the bed board and pushing the connecting rods 7 on both sides of the carrier plate 1, the positioning wheel 3 is pushed to rotate eccentrically relative to the limiting shaft 2 through the lever 301, so that the positioning wheel 3 is inserted into the positioning groove on the bed board, and the device is fixedly installed on the bed board.

[0027] like Figure 3 As shown, the mounting base 4 has a mounting groove 401 in the middle, and the support frame 5 is rotatably installed in the mounting groove 401. There is a gap between the bottom of the support frame 5 and the top of the mounting base 4. The support frame 5 has a rotating shaft 501 on its side. The support frame 5 is rotatably connected to the mounting base 4 through the rotating shaft 501. A connector 8 is fixedly connected to one side of the support frame 5. A first rotating rod 801 is rotatably connected to one side of the connector 8. A second rotating rod 402 is rotatably connected to one side of the mounting base 4. An adjusting rod 9 is rotatably connected to the middle of the second rotating rod 402. The adjusting rod 9 passes vertically through the second rotating rod 402 and the first rotating rod 801 and is threadedly connected to the first rotating rod 801.

[0028] By rotating the adjusting rod 9, the distance between the first rotating rod 801 and the second rotating rod 402 is changed, so that the connecting piece 8 can drive the support frame 5 to rotate around the rotating shaft 501, thereby changing the tilt angle of the fixed frame 6 and adjusting the support height of the patient's head.

[0029] Preferably, the support frame 5 has a slot with the slot opening facing upwards, and the fixing frame 6 is inserted into the support frame 5 through the slot. This makes it convenient for the user to install the fixing frame 6 onto the support frame 5.

Claims

1. A head positioning device for a gamma knife, characterized by: Includes a carrier plate (1), with limit shafts (2) installed on both sides of the carrier plate (1). A positioning wheel (3) is rotatably connected to the end of the limit shaft (2). The positioning wheel (3) is eccentrically rotatably connected to the limit shaft (2). A lever (301) is fixedly connected to one side of the positioning wheel (3). A mounting base (4) is fixedly connected to the upper part of the carrier plate (1). A support frame (5) is fixedly installed on the mounting base (4). A fixing frame (6) is fixedly installed on one side of the support frame (5).

2. The head positioning device for a gamma knife of claim 1, wherein: The carrier plate (1) is provided with two positioning wheels (3) on both sides, and the carrier plate (1) is provided with connecting rods (7) on both sides. The connecting rods (7) are rotatably connected to the two positioning wheels (3) on the same side through levers (301).

3. The head positioning device for a gamma knife of claim 1, wherein: The mounting base (4) has a mounting groove (401) in the middle, and the support frame (5) is rotatably installed in the mounting groove (401).

4. The head positioning device for a gamma knife of claim 3, wherein: The support frame (5) has a gap between its bottom and the top of the mounting base (4). The support frame (5) has a rotating shaft (501) on its side. The support frame (5) is rotatably connected to the mounting base (4) through the rotating shaft (501).

5. The head positioning device for a gamma knife of claim 4, wherein: The support frame (5) is fixedly connected to a connector (8) on one side. A first rotating rod (801) is rotatably connected to one side of the connector (8). A second rotating rod (402) is rotatably connected to one side of the mounting base (4). An adjusting rod (9) is rotatably connected to the middle of the second rotating rod (402). The adjusting rod (9) passes vertically through the second rotating rod (402) and the first rotating rod (801) and is threadedly connected to the first rotating rod (801).

6. The head positioning device for a gamma knife of claim 1, wherein: The support frame (5) has a slot with the slot opening facing upwards, and the fixing frame (6) is inserted into the support frame (5) through the slot.

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