A spinal intervertebral distraction device

Abstract

The utility model provides a kind of spinal intervertebral distraction device, including shell, the shell front is equipped with opening, the opening inside sliding installation has distraction assembly, the distraction assembly includes two symmetrical connecting plates, and the connecting plate one end fixedly connected with L type strutting plate, the shell bottom fixedly installed with symmetrical fixed seat, and the fixed seat between rotationally installed with second two-way screw rod, one side The fixed seat side wall fixedly installed with second motor, and the second motor output shaft one end is fixedly connected with the second two-way screw rod, and the second two-way screw rod both ends screw thread portion fixedly installed with symmetrical mounting rod, second motor is driven second two-way screw rod rotation and drives both sides mounting rod to move towards or repel each other after starting, so that the distraction device can adapt to different size size medical care bed board, greatly increase the device versatility.

Description

Technical Field

[0001] This utility model relates to a spreading device, and more particularly to a spinal intervertebral spreading device. Background Technology

[0002] Spinal intervertebral spacers are crucial instruments in minimally invasive spinal surgeries (such as interbody fusion and discectomy). Their core function is to precisely open the intervertebral space at the affected segment, creating sufficient operating space for the surgeon while maintaining temporary spinal stability, facilitating procedures such as discectomy, bone grafting, or internal fixation. Current spinal intervertebral spacers typically use a fixed-size bed board design. When faced with medical bed boards of varying sizes, additional spacers are often required, significantly increasing medical costs. Therefore, a novel spinal intervertebral spacer is urgently needed to address these technical challenges. Utility Model Content

[0003] The present invention aims to solve the problem that existing technologies often require additional support devices when dealing with medical care bed boards of different sizes, which greatly increases the economic cost of medical care.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A spinal intervertebral spacer includes: a housing with an opening on the front, a spacer assembly slidably mounted in the opening, the spacer assembly including two symmetrical connecting plates, an L-shaped support plate fixedly connected to one end of each symmetrical connecting plate, symmetrical fixing seats fixedly mounted on the bottom of the housing, a second bidirectional lead screw rotatably mounted between the symmetrical fixing seats, a second motor fixedly mounted on the side wall of one of the fixing seats, one end of the output shaft of the second motor fixedly connected to the second bidirectional lead screw, and symmetrical mounting rods fixedly mounted at the threaded ends of the second bidirectional lead screw.

[0005] Furthermore, a first motor is fixedly installed on one side of the housing. The output shaft of the first motor passes through the housing and is fixedly connected to a first bidirectional lead screw. One end of the first bidirectional lead screw is rotatably installed on the inner side wall of the housing and passes through the symmetrical connecting plates. The symmetrical connecting plates are respectively located on the threads on both sides of the first bidirectional lead screw.

[0006] Furthermore, a slide rail is fixedly installed on one side of the inner wall of the housing, and one end of the symmetrical connecting plate is slidably installed in the slide rail. A number of ball bearings are rotatably installed in the slide rail, and one end of the symmetrical connecting plate is in contact with the number of ball bearings.

[0007] Furthermore, a slot is provided inside the symmetrical mounting rod, and a cylinder is fixedly installed in the slot. A fixing plate is fixedly installed at one end of the cylinder piston rod, and a spiral adjusting rod is threaded through and installed on the fixing plate. A clamping plate is rotatably installed at the top of the spiral adjusting rod.

[0008] Furthermore, a guide rod is fixedly installed between the symmetrically positioned mounting bases. The guide rod is located above the second bidirectional lead screw and passes through the symmetrically positioned mounting rod.

[0009] Furthermore, the balls are arranged in a uniform distribution.

[0010] Compared with the prior art, the beneficial effects of this utility model include: by starting the second motor to drive the second bidirectional lead screw to select, the mounting rods on both sides move towards or away from each other, so that the width of the medical bed board can be fixed and adjusted according to the actual use, thereby greatly increasing the versatility of the device. Attached Figure Description

[0011] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is an overall structural diagram of an embodiment of the present utility model; Figure 2 This is a front view of the overall structure of an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 4 This is a partial structural diagram of an embodiment of the present utility model.

[0012] Labels in the diagram: 1. Housing; 2. Opening; 3. First motor; 4. First double-acting lead screw; 5. Slide rail; 6. Ball bearing; 7. Connecting plate; 8. L-shaped support plate; 9. Fixed seat; 10. Second motor; 11. Second double-acting lead screw; 12. Mounting rod; 13. Cylinder; 14. Fixed plate; 15. Screw adjusting rod; 16. Clamping plate; 17. Guide rod. Detailed Implementation

[0013] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0014] Example 1 includes a housing 1 with an opening 2 on the front. A spreading assembly is slidably installed in the opening 2. The spreading assembly includes two symmetrical connecting plates 7. One end of each symmetrical connecting plate 7 is fixedly connected to an L-shaped support plate 8. Symmetrical fixing seats 9 are fixedly installed at the bottom of the housing 1. A second bidirectional lead screw 11 is rotatably installed between the symmetrical fixing seats 9. A second motor 10 is fixedly installed on the side wall of one side of the fixing seat 9. One end of the output shaft of the second motor 10 is fixedly connected to the second bidirectional lead screw 11. Symmetrical mounting rods 12 are fixedly installed at the threaded ends of the second bidirectional lead screw 11. A guide rod 17 is fixedly installed between the symmetrical fixing seats 9. The guide rod 17 is located above the second bidirectional lead screw 11 and passes through the symmetrical mounting rods 12. The side-opening components can open the surgical wound for spinal surgery, making it easier for medical staff to handle. After the second motor 10 is started, it can drive the second bidirectional lead screw 11 to rotate clockwise or counterclockwise, thereby driving the two mounting rods 12 on the second bidirectional lead screw 11 to move towards or repel each other. The guide rod 17 can assist the horizontal linear movement of the two mounting rods 12 and prevent them from rotating with the rotating second bidirectional lead screw 11.

[0015] In Example 2, a first motor 3 is fixedly installed on one side of the housing 1. The output shaft of the first motor 3 passes through the housing 1 and is fixedly connected to a first bidirectional lead screw 4. One end of the first bidirectional lead screw 4 is rotatably installed on the inner side wall of the housing 1 and passes through a symmetrical connecting plate 7. The symmetrical connecting plates 7 are respectively located on the threads on both sides of the first bidirectional lead screw 4. After the first motor 3 is started, it drives the first bidirectional lead screw 4 to rotate, causing the two connecting plates 7 to move towards or repel each other, thereby driving the two L-shaped support plates 8 to open and reset.

[0016] In Example 3, a slide rail 5 is fixedly installed on the inner wall of one side of the housing 1. One end of the symmetrical connecting plate 7 is slidably installed in the slide rail 5. Several ball bearings 6 are rotatably installed in the slide rail 5, and the ball bearings 6 are evenly distributed. One end of the symmetrical connecting plate 7 is in contact with the ball bearings 6. The slide rail 5 also serves to guide the connecting plates 7 on both sides. At the same time, the ball bearings 6 can significantly reduce sliding friction, making the opening and resetting process smoother and more unobstructed.

[0017] In Example 4, a slot is provided inside the symmetrical mounting rod 12, and a cylinder 13 is fixedly installed in the slot. A fixing plate 14 is fixedly installed at one end of the piston rod of the cylinder 13. A spiral adjusting rod 15 is threaded through and installed on the fixing plate 14. A clamping plate 16 is rotatably installed at the top of the spiral adjusting rod 15. After the cylinder 13 is started, one end of its piston rod can extend and retract to drive the fixing plate 14. The rotating spiral adjusting rod 15 can drive the clamping plate 16 to move up and down horizontally, thereby adapting to different bed boards and fixing the whole device from the bottom of the bed board.

[0018] When the device is in use, the second motor 10 is started according to the width of the bed board to drive the second bidirectional lead screw 11 to rotate, and drive the two side mounting rods 12 to move towards or repel each other until the two side mounting rods 12 clamp the two sides of the bed board. Then, the bottom spiral adjustment rod 15 can be rotated to drive the clamping plate 16 to press against the bottom of the bed board for fixation. Then, the first motor 3 is started to drive the first bidirectional lead screw 4 to rotate, driving the two side connecting plates 7 to move towards or repel each other, thereby realizing the opening or repositioning of the wound by the two side L-shaped support plates 8.

[0019] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A spinal intervertebral spacer, comprising a housing (1), wherein an opening (2) is formed on the front of the housing (1), and a spacer assembly is slidably installed within the opening (2), the spacer assembly comprising two symmetrical connecting plates (7), and an L-shaped support plate (8) is fixedly connected to one end of each symmetrical connecting plate (7), characterized in that, The bottom of the housing (1) is fixedly installed with symmetrical fixed seats (9), and a second bidirectional screw (11) is rotatably installed between the symmetrical fixed seats (9). A second motor (10) is fixedly installed on the side wall of one side of the fixed seat (9). One end of the output shaft of the second motor (10) is fixedly connected to the second bidirectional screw (11), and symmetrical mounting rods (12) are fixedly installed at the threaded ends of the second bidirectional screw (11).

2. The spinal intervertebral spacer according to claim 1, characterized in that, A first motor (3) is fixedly installed on one side of the housing (1). The output shaft of the first motor (3) passes through the housing (1) and is fixedly connected to a first bidirectional lead screw (4). One end of the first bidirectional lead screw (4) is rotatably installed on the inner side wall of the housing (1) and passes through the symmetrical connecting plate (7). The symmetrical connecting plate (7) is located on the threads on both sides of the first bidirectional lead screw (4).

3. The spinal intervertebral spacer according to claim 1, characterized in that, A slide rail (5) is fixedly installed on one side of the inner wall of the housing (1). One end of the symmetrical connecting plate (7) is slidably installed in the slide rail (5). A number of balls (6) are rotatably installed in the slide rail (5). One end of the symmetrical connecting plate (7) is in contact with the balls (6).

4. The spinal intervertebral spacer according to claim 1, characterized in that, The mounting rod (12) is symmetrically provided with a slot inside. A cylinder (13) is fixedly installed in the slot. A fixing plate (14) is fixedly installed at one end of the piston rod of the cylinder (13). A spiral adjusting rod (15) is threaded through and installed on the fixing plate (14). A clamping plate (16) is rotatably installed at the top of the spiral adjusting rod (15).

5. The spinal intervertebral spacer according to claim 1, characterized in that, A guide rod (17) is fixedly installed between the symmetrical fixed seats (9). The guide rod (17) is located above the second bidirectional lead screw (11) and passes through the symmetrical mounting rod (12).

6. The spinal intervertebral spacer according to claim 1, characterized in that, The balls (6) are arranged in a uniform distribution.

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