Craniocerebral fixing device for neurosurgery operation

Abstract

The invention discloses a neurosurgical craniocerebral fixing device, and relates to the technical field of medical instruments, the neurosurgical craniocerebral fixing device comprises a fixed frame and a movable frame slidably connected on one side, one side of the upper end of the fixed frame is fixedly connected with a mounting frame, a rotating frame is rotatably connected in the mounting frame, one side of the rotating frame is fixedly connected with a rotating block, and the upper and lower ends in the rotating frame are slidably connected with mounting blocks; a toothed plate is fixedly connected to the side, away from the rotating frame, of the mounting block, and an inner gear ring is fixedly connected into the mounting frame and engaged with the toothed plate. Through structures such as a toothed plate, an inner toothed ring, a mounting block and a rotating frame which are arranged at the fixing nail sleeving position on one side of the fixing frame, a reciprocating lead screw can be used for driving an extrusion block to move, and after the extrusion block drives the mounting block to move, the toothed plate and the inner toothed ring are engaged and clamped, so that the rotating frame cannot rotate, and the mounting frame and the fixing nails are fixed; the situation that after the fixing nail fixes the brain, the fixing nail is driven to be cheaper, and the skin of the extrusion face is applied to cause discomfort of a patient is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a cranial fixation device for neurosurgery Background Technique

[0002] With the wide application of microscopes and navigation systems in cranial surgery, a good body position of cranial surgery patients is more important, and the head fixation device has become one of the most important medical devices in neurosurgery. Commonly used head fixation devices in clinics include a head frame and a horseshoe headrest. Among them, the most commonly used head frame is the three-pin head frame. The three-pin head frame is divided into upper and lower parts. The upper part is a C-shaped fixing frame and head pins for fixing the skull. Three head pins are used to fix the head. The head pins penetrate the skin and then partially embed into the skull to stabilize the head.

[0003] Among the currently used head fixation devices, the fixing pins that can be rotated and adjusted on one side need to be adjusted by means of tools or screwed onto the fixing frame during adjustment. Due to the absence of a limit structure, when the fixing pins fix the skull, if there is a touch, the fixing pins will tend to rotate, thus acting on the skull, resulting in discomfort to the patient. Therefore, a cranial fixation device for neurosurgery is designed to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a cranial fixation device for neurosurgery. Through structures such as a toothed plate, an internal gear ring, a mounting block, and a rotating frame provided at the socket of the fixing pin on one side of the fixing frame, the reciprocating lead screw can be used to drive the extrusion block to move. After the extrusion block drives the mounting block to move, the toothed plate meshes with the internal gear ring and is stuck, so that the mounting frame and the fixing pin are fixed, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A cranial fixation device for neurosurgery, including a fixing frame and a movable frame slidably connected to one side. One side of the upper end of the fixing frame is fixedly connected with a mounting frame. A rotating frame is rotatably connected inside the mounting frame. One side of the rotating frame is fixedly connected with a rotating block. The upper and lower ends inside the rotating frame are slidably connected with mounting blocks. One side of the mounting block away from the rotating frame is fixedly connected with a toothed plate. An internal gear ring is fixedly connected inside the mounting frame. The internal gear ring meshes with the toothed plate. A reciprocating lead screw is rotatably connected inside the rotating frame. One side of the reciprocating lead screw is fixedly connected with a turning handle. An extrusion block is threadedly connected to the reciprocating lead screw.

[0006] In a further embodiment, one side of the mounting block close to the extrusion block is an inclined surface, and the movement of the extrusion block can push the mounting block to move.

[0007] In a further embodiment, the upper and lower ends of the extrusion block are fixedly connected with sliders, and the sliders on the side away from the extrusion block are slidably connected to the inner wall of the rotating frame.

[0008] In a further embodiment, a tension spring is fixedly connected to one side of the mounting block, and one end of the tension spring is fixedly connected to the outer wall of the rotating frame.

[0009] In a further embodiment, limit blocks are fixedly connected to both the upper and lower ends on one side inside the rotating frame.

[0010] In a further embodiment, a mounting bracket is fixedly connected to one side of the rotating frame, and fixing pins are installed on both the mounting bracket and the movable bracket.

[0011] In a further embodiment, a support frame is fixedly connected to the lower end of the fixed frame. The lower end of the support frame is fixedly connected to a limit ring through a bolt. The lower end of the limit ring is fixedly connected to a support plate. The lower end of the support plate is fixedly connected to an adjustment tube. The lower end of the adjustment tube is threadedly connected to a threaded rod. The lower end of the threaded rod is rotatably connected to a moving base.

[0012] In a further embodiment, a first gear is fixedly connected to the lower end of the threaded rod. A second gear is installed on one side of the first gear. A fixing handle is fixedly connected to the upper end of the second gear.

[0013] In a further embodiment, the lower end of the second gear is rotatably connected to a sliding tube. The lower end of the sliding tube is slidably connected to a mounting rod. The lower end of the mounting rod is fixedly connected to a fixed frame.

[0014] In a further embodiment, a spring is fixedly connected inside the sliding tube, and the lower end of the spring is fixedly connected to the mounting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention is a craniocerebral fixation device for neurosurgical operations. Through structures such as a toothed plate, an internal gear ring, a mounting block, and a rotating frame provided at the socket of the fixing pin on one side of the fixed frame, after using the rotating frame to drive the mounting bracket to rotate and adjust the position of the fixing pin, the reciprocating screw rod is used to drive the extrusion block to move. After the extrusion block drives the mounting block to move, the toothed plate is engaged with the internal gear ring and locked, so that the rotating frame cannot rotate, and the mounting bracket and the fixing pin are fixed, avoiding the fixing pin from shifting after fixing the craniocerebral, and thus causing discomfort to the patient's skin on the extrusion surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front-view sectional structure schematic diagram of the main body of the present invention;

[0018] Figure 2 It is a schematic diagram of the structures of the movable bracket, the fixed bracket, and the fixing pin of the present invention;

[0019] Figure 3 It is a sectional structure schematic diagram of the mounting frame of the present invention;

[0020] Figure 4 Schematic structural diagram of the rotating frame of the present invention;

[0021] Figure 5 For the present invention Figure 1 Enlarged view of Structure A;

[0022] Figure 6 For the present invention Figure 1 Enlarged view of Structure B;

[0023] Figure 7 Schematic separation structure diagram of the internal tooth ring and the toothed plate of the present invention.

[0024] In the figure: 1, fixed frame; 2, movable frame; 3, mounting frame; 31, internal tooth ring; 4, rotating frame; 42, mounting block; 43, toothed plate; 44, tension spring; 45, extrusion block; 451, slider; 46, reciprocating lead screw; 47, limit block; 5, mounting bracket; 6, fixing nail; 7, rotating block; 8, support frame; 9, limit ring; 10, support plate; 11, adjusting pipe; 12, threaded rod; 13, first gear; 14, second gear; 15, fixing handle; 16, sliding pipe; 17, mounting rod; 18, spring; 19, moving base. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1

[0027] Please refer to Figure 1-7 , this embodiment provides a craniocerebral fixation device for neurosurgery, including a fixed frame 1 and a movable frame 2 slidably connected to one side. One side of the upper end of the fixed frame 1 is fixedly connected with a mounting frame 3. A rotating frame 4 is rotatably connected inside the mounting frame 3. One side of the rotating frame 4 is fixedly connected with a mounting bracket 5. Fixing nails 6 are installed on both the mounting bracket 5 and the movable frame 2. The fixing nails 6 are used to fix the patient's cranium. One side of the rotating frame 4 is fixedly connected with a rotating block 7;

[0028] The rotating block 7 drives the rotating frame 4 to rotate. The rotating frame 4 drives the mounting bracket 5 to move, so that the mounting bracket 5 drives the fixing nails 6 thereon to rotate, adjusting the positions of the two fixing nails 6, so that the fixing nails 6 can be fixed at positions that do not affect the patient's skull surgery, thereby facilitating the surgical operation of the skull.

[0029] The upper and lower ends of the rotating frame 4 are slidably connected with mounting blocks 42. The side of the mounting block 42 away from the rotating frame 4 is fixedly connected with a toothed plate 43. An internal gear ring 31 is fixedly connected inside the mounting frame 3. The internal gear ring 31 meshes with the toothed plate 43. A reciprocating lead screw 46 is rotatably connected inside the rotating frame 4. A turning handle is fixedly connected to one side of the reciprocating lead screw 46. An extrusion block 45 is threadedly connected to the reciprocating lead screw 46.

[0030] The turning handle drives the reciprocating lead screw 46 to rotate. The reciprocating lead screw 46 drives the extrusion block 45 to move, so that after the extrusion block 45 moves, it extrudes the two mounting blocks 42 located inside the rotating frame 4. After being extruded, the mounting block 42 drives the tension spring 44 to elongate, and makes the toothed plate 43 move. After the toothed plate 43 moves, it meshes with the internal gear ring 31 and gets stuck, so that the mounting block 42 cannot rotate with the rotating frame 4, making the positions of the adjusted mounting bracket 5 and the fixing nail 6 fixed, thus facilitating the use after the fixing nail 6 is fixed.

[0031] The side of the mounting block 42 close to the extrusion block 45 is an inclined surface, as Figure 7 shown, so that the movement of the extrusion block 45 can push the mounting block 42 to move.

[0032] Sliding blocks 451 are fixedly connected to the upper and lower ends of the extrusion block 45. The side of the sliding block 451 away from the extrusion block 45 is slidably connected to the inner wall of the rotating frame 4. The provided sliding blocks 451 are used to limit the extrusion block 45, so that after being driven by the reciprocating lead screw 46, the extrusion block 45 moves smoothly, thereby extruding the mounting block 42 to move.

[0033] A tension spring 44 is fixedly connected to one side of the mounting block 42. One end of the tension spring 44 is fixedly connected to the outer wall of the rotating frame 4. The provided tension spring 44 is used to move the mounting block 42, so that the mounting block 42 moves the toothed plate 43 to separate from the internal gear ring 31. When it is necessary to rotate and adjust the rotating frame 4, it is convenient to rotate and adjust the rotating frame 4.

[0034] Limit blocks 47 are fixedly connected to the upper and lower ends on one side inside the rotating frame 4. The provided limit blocks 47 are used to limit the extrusion block 45, avoiding the problem that the extrusion block 45 moves excessively and passes through the mounting block 42, resulting in inability to recover.

[0035] Embodiment 2

[0036] Please refer to Figure 1 and Figure 6 , and on the basis of Embodiment 1, further improvements are made:

[0037] The lower end of the fixing frame 1 is fixedly connected to the support frame 8. The lower end of the support frame 8 is fixedly connected to the limit ring 9 through bolts. The lower end of the limit ring 9 is fixedly connected to the support plate 10. The lower end of the support plate 10 is fixedly connected to the adjusting pipe 11. The lower end of the adjusting pipe 11 is threadedly connected to the threaded rod 12. The lower end of the threaded rod 12 is rotatably connected to the moving base 19. The threaded rod 12 can be rotated to drive the adjusting pipe 11 to rise, thereby driving the support plate 10, the support frame 8, and the limit ring 9 to rise, so that the upper head fixing device rises to a suitable position for fixing the patient's head and reducing discomfort.

[0038] The lower end of the threaded rod 12 is fixedly connected to the first gear 13. A second gear 14 is installed on one side of the first gear 13. The upper end of the second gear 14 is fixedly connected to the fixing handle 15. The lower end of the second gear 14 is rotatably connected to the sliding pipe 16. The lower end of the sliding pipe 16 is slidably connected to the mounting rod 17. The lower end of the mounting rod 17 is fixedly connected to the fixing frame 1.

[0039] Move the head fixing device to the head of the operating bed, then press the fixing handle 15 to drive the second gear 14 to descend, so that the second gear 14 meshes with the first gear 13. Then rotate the fixing handle 15 to drive the second gear 14 to rotate. The second gear 14 drives the first gear 13 to rotate, and the first gear 13 drives the threaded rod 12 to rotate, so that the threaded rod 12 drives the adjusting pipe 11 to rise, thereby driving the upper head fixing device to rise to a suitable height for the use of the revealing fixing device.

[0040] In order to separate the second gear 14 from the first gear 13 after adjustment and prevent the first gear 13 from continuing to rotate, a spring 18 is also fixedly connected inside the sliding pipe 16. The lower end of the spring 18 is fixedly connected to the mounting rod 17. The provided spring 18 is used to drive the sliding pipe 16 to rise after restoration, so that the sliding pipe 16 drives the second gear 14 to rise and separate from the first gear 13.

[0041] Move the head fixing device to the head of the operating bed, then press the fixing handle 15 to drive the second gear 14 to descend, so that the second gear 14 meshes with the first gear 13. The second gear 14 drives the sliding pipe 16 to descend and compress the spring 18. Then rotate the fixing handle 15 to drive the second gear 14 to rotate. The second gear 14 drives the first gear 13 to rotate, and the first gear 13 drives the threaded rod 12 to rotate, so that the threaded rod 12 drives the adjusting pipe 11 to rise, thereby driving the upper head fixing device to rise to a suitable height for the use of the revealing fixing device;

[0042] Then place the patient's head on the upper part of the fixing frame 1. After that, first rotate the turning handle, which drives the reciprocating lead screw 46 to rotate. The reciprocating lead screw 46 drives the extrusion block 45 to move, separating the extrusion block 45 from the mounting block 42. The tension spring 44 drives the toothed plate 43 to move, separating the toothed plate 43 from the internal gear ring 31 and driving the mounting block 42 to move. Then rotate the rotating block 7, which drives the rotating frame 4 to rotate. The rotating frame 4 drives the mounting bracket 5 to move, causing the fixing nails 6 on the mounting bracket 5 to rotate. Adjust the positions of the two fixing nails 6 so that the fixing nails 6 can be fixed at positions that do not affect the patient's head surgery, thus facilitating the surgical operation on the head. Then rotate the turning handle again, which drives the reciprocating lead screw 46 to rotate. The reciprocating lead screw 46 drives the extrusion block 45 to move. After the extrusion block 45 moves, it squeezes the two mounting blocks 42 located in the rotating frame 4. After being squeezed, the mounting blocks 42 drive the tension spring 44 to elongate and cause the toothed plate 43 to move. After the toothed plate 43 moves, it meshes with and gets stuck to the internal gear ring 31, making the mounting blocks 42 unable to rotate with the rotating frame 4. This fixes the positions of the adjusted mounting bracket 5 and the fixing nails 6, thus facilitating the use after the fixing nails 6 are fixed and preventing the fixing nails 6 from moving and squeezing the patient's skin during use.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A craniocerebral fixation device for neurosurgery, comprising a fixing frame (1) and a movable frame (2) slidably connected to one side, characterized in that: One side of the upper end of the fixing frame (1) is fixedly connected to the mounting frame (3). The rotating frame (4) is rotatably connected inside the mounting frame (3). One side of the rotating frame (4) is fixedly connected to the rotating block (7). The upper and lower ends of the rotating frame (4) are slidably connected to the mounting block (42). One side of the mounting block (42) away from the rotating frame (4) is fixedly connected to the toothed plate (43). The internal toothed ring (31) is fixedly connected inside the mounting frame (3). The internal toothed ring (31) is engaged with the toothed plate (43). The reciprocating lead screw (46) is rotatably connected inside the rotating frame (4). One side of the reciprocating lead screw (46) is fixedly connected to the turning handle. The extrusion block (45) is threadedly connected to the reciprocating lead screw (46).

2. The craniocerebral fixation device for neurosurgery according to claim 1, wherein: One side of the mounting block (42) close to the extrusion block (45) is an inclined surface. The movement of the extrusion block (45) can push the mounting block (42) to move.

3. A craniocerebral fixation device for neurosurgery according to claim 1, characterized in that: The upper and lower ends of the extrusion block (45) are fixedly connected to the sliding block (451). One side of the sliding block (451) away from the extrusion block (45) is slidably connected to the inner wall of the rotating frame (4).

4. A craniocerebral fixation device for neurosurgery according to claim 3, characterized in that: One side of the mounting block (42) is fixedly connected to the tension spring (44). One end of the tension spring (44) is fixedly connected to the outer wall of the rotating frame (4).

5. A craniocerebral fixation device for neurosurgery according to claim 1, characterized in that: Both the upper and lower ends of one side inside the rotating frame (4) are fixedly connected to the limiting block (47).

6. The cranial fixation device for neurosurgery according to claim 5, wherein: One side of the rotating frame (4) is fixedly connected to the mounting frame (5). Fixing nails (6) are installed on both the mounting frame (5) and the movable frame (2).

7. A craniocerebral fixation device for neurosurgery according to claim 1, characterized in that: The lower end of the fixing frame (1) is fixedly connected to the support frame (8). The lower end of the support frame (8) is fixedly connected to the limiting ring (9) through bolts. The lower end of the limiting ring (9) is fixedly connected to the support plate (10). The lower end of the support plate (10) is fixedly connected to the adjusting pipe (11). The lower end of the adjusting pipe (11) is threadedly connected to the threaded rod (12). The lower end of the threaded rod (12) is rotatably connected to the moving base (19).

8. A craniocerebral fixation device for neurosurgery according to claim 7, characterized in that: The lower end of the threaded rod (12) is fixedly connected to the first gear (13). The second gear (14) is installed on one side of the first gear (13). The upper end of the second gear (14) is fixedly connected to the fixing handle (15).

9. The craniocerebral fixation device for neurosurgery according to claim 8, wherein: The lower end of the second gear (14) is rotatably connected to the sliding pipe (16). The lower end of the sliding pipe (16) is slidably connected to the mounting rod (17). The lower end of the mounting rod (17) is fixedly connected to the fixing frame (1).

10. A cranial fixation device for neurosurgery according to claim 9, characterized in that: The spring (18) is fixedly connected inside the sliding pipe (16). The lower end of the spring (18) is fixedly connected to the mounting rod (17).

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