Double-rod compression reduction device for kyphosis

Abstract

The present invention relates to the field of medical device technology, and in particular to a double-rod pressure reduction device for spinal kyphosis. The double-rod pressure reduction device for spinal kyphosis comprises a reduction block, a rod locking mechanism, and a pressure rod mechanism. The rod locking mechanism is passed through the reduction block, the reduction block can rotate on the rod locking mechanism, the reduction block can adjust its height on the rod locking mechanism, one end of the rod locking mechanism is locked with a reduction rod; one end of the pressure rod mechanism is hinged to the reduction block, and the other end is connected to another reduction rod. The pressure rod mechanism is located on one side of the rod locking mechanism, and the pressure rod mechanism can rotate ±α° along its hinged end with the reduction block. The present invention has a simple structural design, is easy to operate, and greatly reduces the difficulty of reducing the rod.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a double-rod pressure reduction device for spinal kyphosis. Background Art

[0002] Kyphosis is a common spinal deformity. In a normal individual, the physiological kyphosis of the thoracic spine is less than 50°, with the apex of the kyphosis at T6-8, forming a balanced physiological arc with the lumbar lordosis. At this point, the sagittal vertical line of gravity passes through C1, T1, T12, and S1, maintaining the optimal physiological curve and body balance, ensuring normal forward vision.

[0003] Congenital spinal deformities, spinal trauma, tuberculosis, and other conditions can lead to increased kyphosis. When the kyphosis exceeds 60°, the deformity can worsen and cause back pain, even paraplegia, requiring corrective treatment.

[0004] Existing pressure reduction tools for kyphosis have many deficiencies in actual use. For example, for severe kyphosis, internal fixation products (screws, rods) are used for correction after osteotomy, but the rods are difficult to reposition and the tools are cumbersome and heavy. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-rod pressure reduction device for kyphosis, which overcomes the shortcomings of the above-mentioned prior art, has a simple structural design, is easy to operate, and greatly reduces the difficulty of resetting the rods.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A double-rod pressure reduction device for kyphosis, comprising a reduction block, a rod locking mechanism and a rod pressing mechanism, wherein:

[0008] The rod locking mechanism is connected to the reset block, the reset block can rotate on the rod locking mechanism, the reset block can adjust the height on the rod locking mechanism, and one end of the first rod pressing mechanism is locked with a reset rod;

[0009] One end of the pressing rod mechanism is hinged to the reset block, and the other end is connected to another reset rod. The pressing rod mechanism is located on one side of the rod locking mechanism, and the pressing rod mechanism can rotate ±α° along the hinged end with the reset block;

[0010] Before using the double-rod pressure reduction device for kyphosis, the position of the reduction block on the rod locking mechanism is adjusted according to the height of the two reduction rods. During use, one of the reduction rods is locked by the rod locking mechanism to prevent it from falling out, and the other reduction rod is pressed by the pressing rod mechanism. The angle of the pressing rod mechanism is variable and matched with the change of the angle of the reduction rod during the reduction process. The reduction block can rotate on the rod locking mechanism, which is beneficial to the force of the rod reduction process. The overall structural design is simple and easy to operate, which greatly reduces the difficulty of reducing the reduction rod.

[0011] Furthermore, the rod locking mechanism includes a threaded rod, a connecting hook, a locking nut, an adjusting nut, a connecting tube and a connecting ring, wherein:

[0012] One end of the threaded rod is provided with a connecting hook for inserting a reset rod, and a locking nut for locking the reset rod is provided near the connecting hook on the threaded rod. After a reset rod is inserted into the connecting hook, the locking nut is screwed to lock the reset rod to prevent it from falling out.

[0013] The threaded rod is also provided with an adjusting nut, a connecting tube and a connecting ring in sequence. The adjusting nut and the connecting ring are connected by a connecting tube. One end of the reset block is sleeved on the outer wall of the connecting tube and is clamped between the connecting ring and the adjusting nut. The adjusting nut is threadedly connected to the threaded rod. When the threaded rod is held and the adjusting nut is screwed, the reset block is driven to adjust the height, and then the relative position of the connecting hook and the pressure rod mechanism connected to the reset block is adjusted. The reset block can rotate along the circumference of the connecting tube.

[0014] Furthermore, the rod locking mechanism also includes a gasket, which is arranged between the adjusting nut and the reset block. One end face of the gasket contacts the adjusting nut, and the other end face contacts the reset block. The gasket can be made of plastic.

[0015] Furthermore, the thread on the threaded rod is set as a rectangular double-thread thread to prevent friction from damaging the gasket.

[0016] Furthermore, the pressing rod mechanism includes a pressing block, one end of which is hinged to the reset block, and the other end of the pressing block is provided with a slot for clamping the reset rod, which presses another reset rod through the slot. As Fu Weibang performs the reset operation, the angle of the pressing rod mechanism changes, and the changing angle α is ±45°.

[0017] Furthermore, the reset block includes a first block and a second block that are fixedly connected, the first block is connected to the rod locking mechanism, and the second block is connected to the rod pressing mechanism.

[0018] Furthermore, the height of the first block is smaller than that of the second block, and the second block is provided with a groove for articulating the pressure rod mechanism.

[0019] Furthermore, the upper end of the pressing block of the pressing rod mechanism is inserted into the groove and hinged in the groove, and the lower end is an inverted "U"-shaped structure.

[0020] Furthermore, the side surface of the second block close to the first block is configured as an arcuate surface matching the outer diameter of the connecting ring and the outer diameter of the locking nut.

[0021] The beneficial effects of the present invention are as follows: compared with the prior art, the double-rod pressurized reduction device for spinal kyphosis of the present invention has the following advantages: before use, the position of the reduction block on the rod locking mechanism is adjusted according to the height of the two reduction rods; when in use, one of the reduction rods is locked by the rod locking mechanism to prevent it from falling out, and the other reduction rod is pressed by the rod pressing mechanism; the angle of the rod pressing mechanism is variable, cooperating with the change in the angle of the reduction rod during the reduction process; the reduction block can rotate on the rod locking mechanism, which is beneficial to the compliance of the rod reduction process; the overall structural design is simple, the operation is convenient, and the reduction difficulty of the reduction rod is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the rod locking mechanism of the present invention;

[0024] Figure 3 It is a structural diagram of the reset block and the pressing rod mechanism of the present invention;

[0025] Among them, 1 reset block, 101 first block, 102 second block, 2 rod locking mechanism, 201 threaded rod, 202 connecting hook, 203 locking nut, 204 adjusting nut, 205 connecting pipe, 206 connecting ring, 207 gasket, 3 pressing rod mechanism. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] like Figure 1-3 In the embodiment shown, a double-rod pressure reduction device for kyphosis deformity includes a reduction block 1, a rod locking mechanism 2, and a rod pressing mechanism 3, wherein:

[0028] The rod locking mechanism 2 is connected to the reset block 1, the reset block 1 can rotate on the rod locking mechanism 2, and the reset block 1 can adjust the height on the rod locking mechanism 2. One end of the first pressing rod mechanism 3 is locked with a reset rod;

[0029] One end of the pressing rod mechanism 3 is hinged to the reset block 1, and the other end is connected to another reset rod. The pressing rod mechanism 3 is located on one side of the rod locking mechanism 2, and the pressing rod mechanism 3 can rotate ±α° along the hinged end with the reset block 1;

[0030] Before using the double-rod pressure reduction device for kyphosis, the position of the reduction block 1 on the rod locking mechanism 2 is adjusted according to the height of the two reduction rods. During use, one of the reduction rods is locked by the rod locking mechanism 2 to prevent it from falling out, and the other reduction rod is pressed by the pressing rod mechanism 3. The angle of the pressing rod mechanism 3 is variable and matched with the change in the angle of the reduction rod during the reduction process. The reduction block 1 can rotate on the rod locking mechanism 2, which is beneficial to the fit of the rod during the reduction process. The overall structural design is simple and easy to operate, which greatly reduces the difficulty of reducing the reduction rod.

[0031] In this embodiment, the rod locking mechanism 2 includes a threaded rod 201, a connecting hook 202, a locking nut 203, an adjusting nut 204, a connecting tube 205 and a connecting ring 206, wherein:

[0032] One end of the threaded rod 201 is provided with a connecting hook 202 for inserting a reset rod. A locking nut 203 for locking the reset rod is provided near the connecting hook 202 on the threaded rod 201. After a reset rod is inserted into the connecting hook 202, the locking nut 203 is screwed to lock the reset rod and prevent it from falling out.

[0033] The threaded rod 201 is also provided with an adjusting nut 204, a connecting tube 205 and a connecting ring 206 in sequence. The adjusting nut 204 and the connecting ring 206 are connected by the connecting tube 205. One end of the reset block 1 is sleeved on the outer wall of the connecting tube 205 and clamped between the connecting ring 206 and the adjusting nut 204. The adjusting nut 204 is threadedly connected to the threaded rod 201. When holding the threaded rod 201 and screwing the adjusting nut 204, the reset block 1 is driven to adjust its height, and then the relative position of the connecting hook 202 and the pressing rod mechanism 3 connected to the reset block 1 is adjusted. The reset block 1 can rotate along the circumference of the connecting tube 205.

[0034] In this embodiment, the rod locking mechanism 2 also includes a gasket 207, which is arranged between the adjusting nut 204 and the reset block 1. One end face of the gasket 207 contacts the adjusting nut 204, and the other end face contacts the reset block 1. The gasket 207 can be made of plastic.

[0035] In this embodiment, the thread on the threaded rod 201 is configured as a rectangular double-thread thread to prevent friction from damaging the gasket 207 .

[0036] In this embodiment, the pressing rod mechanism 3 includes a pressing block, one end of which is hinged to the reset block 1, and the other end of the pressing block is provided with a slot for clamping the reset rod, which presses another reset rod through the slot. As Fu Weibang performs the reset operation, the angle of the pressing rod mechanism 3 changes, and the changing angle α is ±45°.

[0037] In this embodiment, the reset block 1 includes a first block 101 and a second block 102 that are fixedly connected, the first block 101 is connected to the rod locking mechanism 2, and the second block 102 is connected to the pressure rod mechanism 3; the height of the first block 101 is smaller than the height of the second block 102, and the second block is provided with a groove for hingedly connecting the pressure rod mechanism 3; the upper end of the pressure block of the pressure rod mechanism 3 is inserted into the groove and hinged in the groove, and the lower end is an inverted "U" shape structure; the side of the second block 102 close to the first block 101 is provided with an arc surface that matches the outer diameter of the connecting ring 206 and the outer diameter of the locking nut 203.

[0038] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present invention shall fall within the patent protection scope of the present invention.

Claims

1. A double-rod pressure reduction device for kyphosis, characterized by: It includes a reset block, a rod locking mechanism and a rod pressing mechanism, wherein: The rod locking mechanism is provided on the reset block, the reset block can rotate on the rod locking mechanism, the reset block can adjust the height on the rod locking mechanism, and one end of the rod locking mechanism is locked with a reset rod; One end of the pressing rod mechanism is hinged to the reset block, and the other end is connected to another reset rod. The pressing rod mechanism is located on one side of the rod locking mechanism, and the pressing rod mechanism can rotate ±α° along the hinged end with the reset block; The rod locking mechanism includes a threaded rod, a connecting hook, a locking nut, an adjusting nut, a connecting pipe and a connecting ring, wherein: One end of the threaded rod is provided with a connecting hook for inserting the reset rod, and a locking nut for locking the reset rod is provided near the connecting hook on the threaded rod; The threaded rod is also provided with an adjusting nut, a connecting pipe and a connecting ring in sequence. The adjusting nut and the connecting ring are connected by the connecting pipe. One end of the reset block is sleeved on the outer wall of the connecting pipe, and the adjusting nut is threadedly connected to the threaded rod. The rod locking mechanism further includes a washer, which is arranged between the adjusting nut and the reset block, with one end surface of the washer in contact with the adjusting nut and the other end surface in contact with the reset block; The threads on the threaded rod are arranged as rectangular double-thread threads.

2. A double-rod pressure reduction device for kyphosis according to claim 1, characterized in that: The pressing rod mechanism includes a pressing block, one end of which is hinged to the reset block, and the other end of the pressing block is provided with a clamping groove for clamping the reset rod.

3. The double-rod pressure reduction device for kyphosis according to claim 2, characterized in that: The α=45.

4. The double-rod pressure reduction device for kyphosis according to claim 2, characterized in that: The reset block comprises a first block and a second block that are fixedly connected, the first block is connected to the rod locking mechanism, and the second block is connected to the rod pressing mechanism.

5. The double-rod pressure reduction device for kyphosis according to claim 4, characterized in that: The height of the first block is smaller than that of the second block, and the second block is provided with a groove for articulating the pressure rod mechanism.

6. The double-rod pressure reduction device for kyphosis according to claim 5, characterized in that: The upper end of the pressing block of the pressing rod mechanism is inserted into the groove and hinged in the groove, and the lower end is in an inverted "U" shape.

7. The double-rod pressure reduction device for kyphosis according to claim 5, characterized in that: The side surface of the second block close to the first block is arranged as an arc surface matching the outer diameter of the connecting ring and the outer diameter of the locking nut.

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