Fixator for radiotherapy of head and neck tumors

Abstract

The utility model discloses a fixator for head and neck tumor radiotherapy, which relates to the technical field of medical instruments and comprises a bottom plate, bearing columns are symmetrically and fixedly connected to the upper portion of the bottom plate, a movable plate is movably connected to the inner sides of the bearing columns, shoulder fixing assemblies are arranged on the movable plate, and a bearing block is fixedly connected to one side, close to the bearing columns, of the bottom plate. A head fixing assembly is arranged on the bearing block, a fixing block is fixedly connected to the side, close to the bearing block, of the bearing column, a neck fixing assembly is arranged on the fixing block and comprises a spring and an arc-shaped plate, the shoulder fixing assembly is arranged, the shoulder contour of a patient is accurately attached, and tiny displacement in the radiotherapy process is effectively limited; by arranging the head fixing assembly, the head of the patient can be accurately fixed to the preset position, and by arranging the neck fixing assembly, the neck contour of the patient can be adapted in a personalized mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially, a kind of fixer for head and neck tumor radiotherapy. BACKGROUND

[0002] At present, head and neck radiotherapy position fixing mainly adopts head and neck shoulder fixing frame combined with head and neck shoulder positioning film mode, this mode usually needs to use standard head positioning plate to support the patient's back brain part, head and neck region is combined by rigid part and movable part, movable mandible is attached to rigid structure skull, and the horizontal position of cervical vertebra and upper thoracic vertebra is maintained by soft ligament connection.

[0003] Through retrieval, the utility model patent with Chinese patent number CN221601093U discloses a head and neck fixer;

[0004] Compared with prior art, the utility model patent with Chinese patent number CN221601093U sets neck positioning plate, when patient lies on the bottom plate upper surface, neck positioning plate not only can support the neck of patient, and further compensate the gap between patient cervical vertebra and neck positioning plate, and the neck positioning plate of arc curved surface structure is consistent with patient cervical vertebra profile, such setting can improve the comfort of patient cervical vertebra on the one hand, and can improve the adhesion of patient cervical vertebra and neck positioning plate, and further make patient head keep better stability.

[0005] But the above-mentioned device in actual use, when fixing patient head and neck, it is not easy to fix according to different patient groups, and when fixing, through the neck positioning plate of arc curved surface structure and patient cervical vertebra profile consistent fixation, it is not easy to fix head, neck and shoulder in multidirectional, therefore, need to propose a kind of fixer for head and neck tumor radiotherapy. UTILITY MODEL CONTENT

[0006] The utility model aims at solving the shortcomings in prior art that it is not easy to fix according to different patient groups and not easy to fix head and neck in multidirectional, and proposes a kind of fixer for head and neck tumor radiotherapy.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] The utility model relates to a fixer for head and neck tumor radiotherapy, including the bottom plate, the upper part of bottom plate is fixedly connected with the load bearing column, the inboard of load bearing column is movably connected with the moving plate, be provided with shoulder fixed subassembly on moving plate, the shoulder extrusion fixed subassembly includes second threaded rod and first extrusion board, the side of bottom plate close to load bearing column is fixedly connected with the load bearing block, be provided with head fixed subassembly on load bearing block, head fixed subassembly includes second extrusion board and flexible bandage, the side of load bearing column close to load bearing block is fixedly connected with fixed block, be provided with neck fixed subassembly on fixed block, neck fixed subassembly includes spring and arc plate, through setting up shoulder fixed subassembly, through accurate adaptation patient shoulder profile, effectively limit the tiny displacement in radiotherapy process to ensure the high accuracy of treatment.

[0009] The above technical solution further comprises:

[0010] The inboard of the load bearing column is provided with a first sliding groove, the side of the bottom plate close to the load bearing column is movably connected with a first threaded rod, the first threaded rod is movably connected between the side away from the bottom plate and the load bearing column, the first threaded rod is threadedly connected with the moving plate, and the size of the first sliding groove is matched with the size of the moving plate.

[0011] The side away from the bottom plate of the moving plate is provided with a second sliding groove, the inboard of the second sliding groove is movably connected with a second threaded rod, the second threaded rod is threadedly connected with the first extrusion board, and the size of the second sliding groove is matched with the size of the first extrusion board.

[0012] The side close to the load bearing column of the load bearing block is provided with a third sliding groove, and the inboard of the third sliding groove is movably connected with a bidirectional threaded rod.

[0013] The bidirectional threaded rod is threadedly connected with the second extrusion board, the number of the second extrusion board is two groups, the size of the third sliding groove is matched with the size of the second extrusion board, the head of a patient can be accurately fixed at a predetermined position, and it is ensured that a radioactive source can accurately irradiate a tumor area during radiotherapy.

[0014] The inside of the second extrusion board is provided with a through hole, and the inboard of the through hole is movably connected with the flexible bandage.

[0015] A sliding rod is slidably arranged in the inside of the fixed block, and one end of the sliding rod close to the second extrusion board is fixedly connected with the arc plate.

[0016] The side close to the arc plate of the fixed block is fixedly connected with the spring, and the end away from the fixed block of the spring is fixedly connected with the arc plate.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model discloses a shoulder fixing assembly is set up, through accurate fitting patient shoulder profile, effectively limit the small displacement in the radiotherapy process, reduce the position error caused by patient's involuntary movement, avoid the possible injury of the radiotherapy to the surrounding normal tissue caused by the shoulder movement.

[0019] 2. The utility model discloses a head fixing assembly is set up, can accurately fix the head of patient in the predetermined position, ensure that the radiotherapy source can accurately and correctly irradiate to the tumor area in the radiotherapy process, thereby improve the accuracy and effect of treatment.

[0020] 3. The utility model discloses a neck fixing assembly is set up, can individualized adaptation patient's neck profile, effectively reduce the small movement in the treatment process, ensure that the radiotherapy is accurately focused on the tumor area, and the surrounding normal tissue is protected from unnecessary radiation damage to the maximum extent. DRAWINGS

[0021] Figure 1 It is the first overall structure schematic drawing of head and neck fixing device proposed in the utility model;

[0022] Figure 2 It is the second overall structure schematic drawing of head and neck fixing device proposed in the utility model;

[0023] Figure 3 It is Figure 1 It is the structure enlarged diagram of A in the utility model;

[0024] Figure 4 It is Figure 1 It is the structure enlarged diagram of B in the utility model.

[0025] In the drawing: 1, bottom plate, 2, bearing column, 3, first sliding slot, 4, first threaded rod, 5, moving plate, 6, second sliding slot, 7, second threaded rod, 8, first extrusion plate, 9, bearing block, 10, third sliding slot, 11, bidirectional threaded rod, 12, second extrusion plate, 13, through hole, 14, flexible bandage, 15, fixed block, 16, sliding rod, 17, spring, 18, arcuate plate. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] Embodiment one

[0028] As Figures 1-4 shown, the utility model provides a fixer for head and neck tumor radiotherapy, including the bottom plate 1, the upper part of bottom plate 1 is fixedly connected with the bearing column 2 in symmetry, the inboard of bearing column 2 is movably connected with moving plate 5, be provided with shoulder fixed assembly on moving plate 5, shoulder extrusion fixed assembly includes second threaded rod 7 and first extrusion plate 8, the side of bottom plate 1 close to bearing column 2 is fixedly connected with bearing block 9, be provided with head fixed assembly on bearing block 9, head fixed assembly includes second extrusion plate 12 and flexible bandage 14, the side of bearing column 2 close to bearing block 9 is fixedly connected with fixed block 15, be provided with neck fixed assembly on fixed block 15, neck fixed assembly includes spring 17 and arcuate plate 18;

[0029] the inboard of bearing column 2 is seted up with first sliding slot 3, the side of bottom plate 1 close to bearing column 2 is movably connected with first threaded rod 4, the side of first threaded rod 4 away from bottom plate 1 and between bearing column 2 movably connected, first threaded rod 4 and moving plate 5 are threadedly connected, the size of first sliding slot 3 and the size of moving plate 5 are compatible;

[0030] the side of moving plate 5 away from bottom plate 1 is seted up with second sliding slot 6, the inboard of second sliding slot 6 and between second threaded rod 7 movably connected, second threaded rod 7 and first extrusion plate 8 are threadedly connected, the size of second sliding slot 6 and the size of first extrusion plate 8 are compatible;

[0031] the side of bearing block 9 close to bearing column 2 is seted up with third sliding slot 10, the inboard of third sliding slot 10 is movably connected with bidirectional threaded rod 11;

[0032] bidirectional threaded rod 11 and second extrusion plate 12 are threadedly connected, the number of second extrusion plate 12 is two groups, the size of third sliding slot 10 and the size of second extrusion plate 12 are compatible;

[0033] the inside of second extrusion plate 12 is seted up with through hole 13, the inboard of through hole 13 and between flexible bandage 14 movably connected.

[0034] In the embodiment, by rotating first threaded rod 4 and bidirectional threaded rod 11, the shoulder and head of the patient can be fixed, the specific embodiment is, by rotating first threaded rod 4, first threaded rod 4 will drive moving plate 5 to move back and forth in the vertical direction, the back and forth movement of moving plate 5 can realize the up-down movement of first extrusion plate 8, by first extrusion plate 8, the extrusion and fixation of the patient's shoulder can be realized, by rotating second threaded rod 7, because second threaded rod 7 and first extrusion plate 8 are threadedly connected, second threaded rod 7 rotates at the same time, can drive first extrusion plate 8 to move back and forth in the horizontal direction, the back and forth movement of first extrusion plate 8 can adjust the position of extrusion and fixation, so as to adapt to different patients;

[0035] By rotating the bidirectional threaded rod 11, the bidirectional threaded rod 11 and the two second extrusion plates 12 are threadedly connected, and rotating the bidirectional threaded rod 11 can drive the two second extrusion plates 12 to move towards each other, and the two second extrusion plates 12 will be fixed while moving, the inside of the second extrusion plate 12 is provided with a through hole 13, the through hole 13 can make the patient's ear pass through the through hole 13, thereby avoiding extrusion of the ear, the inside of the through hole 13 is movably connected with a flexible bandage 14, the flexible bandage 14 fixes the forehead of the patient again, and the flexible bandage 14 can further fix the head of the patient.

[0036] Embodiment two

[0037] As shown in Figures 1-4 , based on the basis of embodiment one, the inside of the fixed block 15 is slidably provided with a slide rod 16, one end of the slide rod 16 close to the second extrusion plate 12 is fixedly connected with the arc-shaped plate 18;

[0038] The side of the fixed block 15 close to the arc-shaped plate 18 is fixedly connected with the spring 17, and the end of the spring 17 away from the fixed block 15 is fixedly connected with the arc-shaped plate 18.

[0039] In this embodiment, the auxiliary fixation of the neck of the patient can be achieved by extruding the arc-shaped plate 18, when the head of the patient contacts the bottom plate 1, the neck will extrude the arc-shaped plate 18, because the slide rod 16 and the spring 17 are fixedly connected with the arc-shaped plate 18, the spring 17 can rebound the arc-shaped plate 18, thereby further achieving the auxiliary fixation of the head, the spring 17 is slidably connected between the fixed block 15, and the spring 17 can slide in the inside of the fixed block 15, thereby assisting the arc-shaped plate 18 to extrude the neck.

[0040] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing device for head and neck tumor radiotherapy, comprising a base plate (1), characterized in that, The upper part of the bottom plate (1) is symmetrically connected with a load-bearing column (2), the inner side of the load-bearing column (2) is movably connected with a moving plate (5), the moving plate (5) is provided with a shoulder fixing assembly, the shoulder extrusion fixing assembly comprises a second threaded rod (7) and a first extrusion plate (8), the side of the bottom plate (1) close to the load-bearing column (2) is fixedly connected with a load-bearing block (9), the load-bearing block (9) is provided with a head fixing assembly, the head fixing assembly comprises a second extrusion plate (12) and a flexible bandage (14), the side of the load-bearing column (2) close to the load-bearing block (9) is fixedly connected with a fixed block (15), the fixed block (15) is provided with a neck fixing assembly, the neck fixing assembly comprises a spring (17) and an arc plate (18).

2. The head and neck tumor radiotherapy fixation device according to claim 1, wherein, The inner side of the load-bearing column (2) is provided with a first sliding groove (3), the side of the bottom plate (1) close to the load-bearing column (2) is movably connected with a first threaded rod (4), the side of the first threaded rod (4) away from the bottom plate (1) is movably connected with the load-bearing column (2), the first threaded rod (4) is threadedly connected with the moving plate (5), the size of the first sliding groove (3) is matched with the size of the moving plate (5).

3. The head and neck tumor radiotherapy fixation device of claim 2, wherein, The side of the moving plate (5) away from the bottom plate (1) is provided with a second sliding groove (6), the inner side of the second sliding groove (6) is movably connected with the second threaded rod (7), the second threaded rod (7) is threadedly connected with the first extrusion plate (8), the size of the second sliding groove (6) is matched with the size of the first extrusion plate (8).

4. The head and neck tumor radiotherapy fixation device of claim 1, wherein, The side of the load-bearing block (9) close to the load-bearing column (2) is provided with a third sliding groove (10), the inner side of the third sliding groove (10) is movably connected with a bidirectional threaded rod (11).

5. The head and neck tumor radiotherapy fixation device of claim 4, wherein, The bidirectional threaded rod (11) is threadedly connected with the second extrusion plate (12), the number of the second extrusion plate (12) is two groups, the size of the third sliding groove (10) is matched with the size of the second extrusion plate (12).

6. The head and neck tumor radiotherapy fixation device of claim 5, wherein, The inside of the second extrusion plate (12) is provided with a through hole (13), the inner side of the through hole (13) is movably connected with the flexible bandage (14).

7. The head and neck tumor radiotherapy fixation device of claim 1, wherein, The inside of the fixed block (15) is slidably provided with a sliding rod (16), one end of the sliding rod (16) close to the second extrusion plate (12) is fixedly connected with the arc plate (18).

8. The head and neck tumor radiotherapy fixation device of claim 7, wherein, The side of the fixed block (15) close to the arc plate (18) is fixedly connected with the spring (17), one end of the spring (17) away from the fixed block (15) is fixedly connected with the arc plate (18).

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