A head fixing device for cheek skin photodynamic therapy

Abstract

The utility model provides a kind of head fixing device for cheek skin photodynamic therapy, including mounting plate, hinged with movable plate on mounting plate, the head pad of liftable is provided on movable plate, first elastic member is provided between head pad and movable plate, arc-shaped fixing pad is provided in the both sides of head pad, driving mechanism connected with head pad and two groups of fixing pad is provided on movable plate, the lifting of head pad is converted into driving two groups of fixing pad opening and closing by driving mechanism, locking assembly connected with head pad is provided on movable plate, the position of head pad is selectively locked or unlocked by locking assembly. The device can quickly fix the head of patient in multiple points without tedious adjustment process and fixing steps when using, effectively improve the treatment efficiency, reduce the time waste of medical staff, improve the practical value of the device.

Description

Technical Field

[0001] This utility model specifically relates to a head fixation device for photodynamic therapy of the cheek skin. Background Technology

[0002] Photodynamic therapy (PDT) of the cheek is a minimally invasive, targeted treatment technique based on photochemical reactions. It is primarily used to improve or remove specific skin lesions on the cheek, and is widely applied in the clinical treatment of acne, photoaging lesions, precancerous skin lesions, and superficial skin malignancies. During treatment, the patient needs to keep their head stable to ensure the light source accurately irradiates the affected area. Head movement can cause the irradiation position to shift, affecting the treatment effect or causing accidental irradiation of normal tissue.

[0003] For example, Chinese invention patent CN110236866A provides a bed-based head fixation device for photodynamic therapy of pediatric cheek skin. When using the device, the child lies flat on the treatment bed with the head supported by a headrest so that the cheek with skin damage is horizontally facing upwards and aligned with the photodynamic therapy device located above it. The first abutment can effectively fix the child's forehead, the second abutment can effectively fix the back of the child's head, and the third abutment can effectively fix the side of the child's head, so that the child's head is well fixed and not easily displaced, and the child's breathing is not affected when the child's head is fixed.

[0004] However, most existing head fixation devices for photodynamic therapy of the cheek require a cumbersome adjustment process to position the patient's head at multiple points, which wastes a lot of medical staff's time and reduces their practicality. Therefore, a head fixation device for photodynamic therapy of the cheek is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a head fixation device for photodynamic therapy of the cheek skin. This solves the technical problem mentioned in the background art that most existing head fixation devices for photodynamic therapy of the cheek skin require a cumbersome adjustment process to perform multi-point positioning of the patient's head, which wastes a lot of time for medical staff and reduces their practicality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a head fixation device for photodynamic therapy of the cheek skin, comprising: The mounting plate is hinged to a movable plate, and a height-adjustable head pad is provided on the movable plate. A first elastic element is provided between the head pad and the movable plate. The fixing pad has an arc-shaped end and is provided in two sets, with the two sets of fixing pads located on both sides of the head pad respectively; A drive mechanism, disposed on the movable plate and connected to the headrest and the two sets of fixed pads, converts the raising and lowering of the headrest into driving the opening and closing of the two sets of fixed pads; and A locking component, disposed on the movable plate and connected to the headrest, is provided to selectively lock or unlock the position of the headrest.

[0007] In a preferred embodiment, the drive mechanism includes: The mounting rod is provided in two sets, one end of which slides through the head pad and the other end is connected to the fixing pad; A drive column, disposed at the end of the mounting rod, and extending beyond the head pad; and Two sets of inclined tracks are arranged opposite each other and fixed on the movable plate. The two sets of drive columns are slidably locked in the two sets of inclined tracks respectively.

[0008] In a preferred embodiment, the mounting rod and the fixing pad are connected by a connecting assembly, the connecting assembly comprising: The first upright plate is located at the end of the mounting rod and is provided with a support plate; The second upright plate is mounted on the fixing pad and is also equipped with a fixing plate; and A connecting post is provided at the bottom of the fixed plate and passes through the support plate. A limit nut is provided at the end of the connecting post, and a second elastic element is provided between the limit nut and the support plate.

[0009] In a preferred embodiment, the locking component includes: A vertical pole is installed at the bottom of the head pad and slides through the movable plate; and The set screw is screwed onto the movable plate, and its end can abut against the upright.

[0010] In a preferred embodiment, a connecting frame is provided at the bottom of the movable plate, and a telescopic rod is hinged to the connecting frame. The other end of the telescopic rod is hinged to the mounting plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: When in use, the device is installed at the end of the operating table. During photodynamic therapy, the patient places their head on the headrest. The headrest moves downwards due to gravity or the patient's own downward pressure, compressing the first elastic element. As the headrest moves downwards, the two sets of fixing pads open and close via a drive mechanism, securing the patient's head on both sides. The patient can control the clamping force by pressing their head downwards. After the headrest and the two sets of fixing pads are moved to the appropriate position, medical staff only need to lock the position of the headrest using the locking component. There is no need for cumbersome adjustment or fixing steps. This allows for quick multi-point fixation of the patient's head without obstructing photodynamic therapy, effectively improving treatment efficiency, reducing the time wasted by medical staff, and enhancing the practical value of the device. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0013] Figure 1 A three-dimensional structural diagram of a head fixation device for photodynamic therapy of the cheek skin provided by this utility model; Figure 2 This is a front view of a head fixation device for photodynamic therapy of the cheek skin according to the present invention; Figure 3 for Figure 2 Enlarged view of region A in the middle; Figure 4 This is a side view of a head fixation device for photodynamic therapy of the cheek skin according to the present invention; Figure label: 1. Mounting plate; 2. Movable plate; 3. Connecting frame; 4. Telescopic rod; 5. Head pad; 6. First elastic element; 7. Upright pole; 8. Top screw; 9. Mounting rod; 10. Drive column; 11. Inclined track; 12. First upright plate; 13. Support plate; 14. Second upright plate; 15. Fixing pad; 16. Fixing plate; 17. Connecting column; 18. Limit nut; 19. Second elastic element. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0015] Example: like Figure 1 , 2 As shown in Figure 4, this utility model provides a head fixation device for photodynamic therapy of the cheek skin, including a mounting plate 1, a movable plate 2 hinged to the mounting plate 1, a connecting frame 3 at the bottom of the movable plate 2, a telescopic rod 4 hinged to the connecting frame 3, and the other end of the telescopic rod 4 hinged to the mounting plate 1. A height-adjustable headrest 5 is provided on the movable plate 2, a first elastic element 6 is provided between the headrest 5 and the movable plate 2, and fixing pads 15 with arc-shaped ends are provided on both sides of the headrest 5.

[0016] When in use, the mounting plate 1 is fixed to the surgical area. The angle of the headrest 5 can be adjusted by controlling the extension and retraction of the telescopic rod 4 to rotate the movable plate 2 along its hinge point with the mounting plate 1. When using the device, the patient can place their head on the headrest 5, and the headrest 5 can be moved downward by the weight of the head or by the patient's own effort to compress the first elastic element 6.

[0017] like Figure 1 , 2 As shown, in this embodiment, the movable plate 2 is provided with a drive mechanism connected to the head pad 5 and two sets of fixed pads 15. The drive mechanism converts the lifting of the head pad 5 into the opening and closing of the two sets of fixed pads 15. The drive mechanism includes two sets of mounting rods 9. One end of the mounting rod 9 slides through the head pad 5, and the other end is connected to the fixed pad 15. The end of the mounting rod 9 is provided with a drive column 10, which extends out of the head pad 5. Two sets of inclined rails 11 are fixedly provided on the movable plate 2, and the two sets of drive columns 10 are respectively slidably locked in the two sets of inclined rails 11.

[0018] As the patient moves their head, causing the head pad 5 to move downwards, the drive column 10 and the movable plate 2 move relative to each other. This allows the two sets of fixing pads 15 to slide and close together through the cooperation of the drive column 10 and the inclined track 11, until they come into contact with the sides of the patient's head. The patient can adjust the clamping force according to their own comfort to avoid discomfort caused by prolonged head fixation.

[0019] like Figure 2 , 3 As shown, in this embodiment, the mounting rod 9 and the fixing pad 15 are connected by a connecting assembly. The connecting assembly includes a first upright plate 12 disposed at the end of the mounting rod 9 and a second upright plate 14 disposed on the fixing pad 15. A support plate 13 is disposed on the first upright plate 12, and a fixing plate 16 is disposed on the second upright plate 14. A connecting post 17 is disposed at the bottom of the fixing plate 16. The connecting post 17 passes through the support plate 13. A limit nut 18 is disposed at the end of the connecting post 17. A second elastic member 19 is disposed between the limit nut 18 and the support plate 13.

[0020] When the two sets of fixing pads 15 are closed and clamp the head, the inner arc surface of the fixing pads 15 can be pushed to slide in the vertical direction to a certain extent through the contact with the head, so that the first upright plate 12 and the second upright plate 14 can move relative to each other. The arrangement of the second elastic element 19 and the limiting nut 18 can apply resistance to the movement of the fixing pads 15, so as to facilitate the small-amplitude movement of the fixing pads 15, thereby adapting to patients with different head shapes.

[0021] like Figure 2 , 4 As shown, in this embodiment, the movable plate 2 is provided with a locking assembly connected to the head pad 5. The locking assembly can selectively lock or unlock the position of the head pad 5. The locking assembly includes a vertical rod 7 disposed at the bottom of the head pad 5. The vertical rod 7 slides through the movable plate 2. A set screw 8 is screwed onto the movable plate 2, and the end of the set screw 8 can abut against the vertical rod 7.

[0022] During movement, the headrest 5 can drive the upright 7 to slide on the movable plate 2. When the headrest 5 and the fixing pad 15 move to the appropriate position, the end of the top screw 8 can be rotated to abut against the upright 7, thereby locking the position of the upright 7 and fixing the head. The entire fixation process only requires medical staff to rotate the top screw 8, effectively saving fixation steps. After treatment, the top screw 8 is released, the patient's head is raised, and the headrest 5 is controlled to rise under the action of the first elastic element 6, which at the same time drives the fixing pad 15 to open, so as to quickly release the fixation of the patient's head.

[0023] The specific usage and beneficial effects of this utility model are as follows: When in use, the device is installed at the end of the operating table. During photodynamic therapy, the patient can place their head on the head pad 5. The head pad 5 moves downward by gravity or by the patient's own downward pressure, compressing the first elastic element 6. During the downward movement of the head pad 5, the two sets of fixing pads 15 can be opened and closed by the drive mechanism. The fixing pads 15 fix the patient's head on both sides. The patient can control the clamping force by pressing down on their head. After the head pad 5 and the two sets of fixing pads 15 are moved to the appropriate position, the medical staff only needs to lock the position of the head pad 5 with the locking component. There is no need for a cumbersome adjustment process and fixing steps. It can quickly fix the patient's head at multiple points without obstructing the photodynamic therapy, effectively improving treatment efficiency, reducing the time wasted by medical staff, and enhancing the practical value of the device.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A head fixation device for photodynamic therapy of the cheek skin, characterized in that, Including: Mounting plate (1) is hinged to movable plate (2), and movable plate (2) is provided with liftable head pad (5) and a first elastic element (6) is provided between the head pad (5) and movable plate (2). The fixing pad (15) has an arc-shaped end and is provided in two sets, with the two sets of fixing pads (15) located on both sides of the head pad (5); A drive mechanism is provided on the movable plate (2) and connected to the head pad (5) and the two sets of fixed pads (15) to convert the lifting of the head pad (5) into driving the two sets of fixed pads (15) to open and close. and A locking assembly is provided on the movable plate (2) and connected to the head pad (5) to selectively lock or unlock the position of the head pad (5).

2. The head fixation device for photodynamic therapy of the cheek skin according to claim 1, characterized in that, The driving mechanism includes: The mounting rod (9) is provided in two sets, one end of which slides through the head pad (5), and the other end is connected to the fixing pad (15); A drive column (10) is disposed at the end of the mounting rod (9) and extends beyond the head pad (5); and Two sets of inclined tracks (11) are arranged opposite each other and are fixed on the movable plate (2). The two sets of drive columns (10) are respectively slidably locked in the two sets of inclined tracks (11).

3. The head fixation device for photodynamic therapy of the cheek skin according to claim 2, characterized in that, The mounting rod (9) and the fixing pad (15) are connected by a connecting assembly, which includes: The first upright plate (12) is provided at the end of the mounting rod (9) and is provided with a support plate (13). The second upright plate (14) is disposed on the fixing pad (15) and is provided with a fixing plate (16); and A connecting post (17) is provided at the bottom of the fixing plate (16) and passes through the support plate (13). A limit nut (18) is provided at the end of the connecting post (17), and a second elastic element (19) is provided between the limit nut (18) and the support plate (13).

4. The head fixation device for photodynamic therapy of the cheek skin according to claim 1, characterized in that, The locking component includes: The upright (7) is set at the bottom of the head pad (5) and slides through the movable plate (2); and The set screw (8) is screwed onto the movable plate (2), and its end can abut against the upright (7).

5. The head fixation device for photodynamic therapy of the cheek skin according to claim 1, characterized in that: The bottom of the movable plate (2) is provided with a connecting frame (3), and a telescopic rod (4) is hinged on the connecting frame (3). The other end of the telescopic rod (4) is hinged to the mounting plate (1).

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