Laminoplasty plate adaptable to different door opening sizes

Abstract

The present application relates to the laminoplasty steel plate that can adapt to different door opening size, including first fixed plate, first support plate, second fixed plate and second support plate, first fixed plate sets up at least one first fixed hole, second fixed plate sets up at least one second fixed hole, first fixed plate and first support plate position corresponding, second fixed plate and second support plate are fixedly connected with first support plate, first connecting plate is fixedly connected with first fixed plate, and first support plate is arranged at the connecting place, second connecting plate and second fixed plate and second support plate fixedly connected form three-prong structure, first connecting plate is located on the surface of second connecting plate, and is slidably connected with second connecting plate, to adjust the length between first connecting plate, second connecting plate, first fixed device is used for fastening connection of first connecting plate and second connecting plate, the present application has the door opening size that can adapt to different patients, and the simple structure, manufacture is easy, and the advantages such as easy operation are used.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a lamina-shaped steel plate that can adapt to different opening sizes. Background Technology

[0002] Cervical spondylosis is a common degenerative disease that seriously affects patients' work and life. Surgical treatment is an effective treatment method.

[0003] Posterior laminectomy is a common surgical procedure, such as... Figure 9 As shown, by opening the door and implanting the laminoplasty steel 1', one end of the laminoplasty steel 1' clamps and fixes the laminae 3', and the other end is supported on the lateral mass 2'. By changing the position of the laminae 3', the spinal canal is expanded so that the compressed spinal cord in the spinal canal can be effectively decompressed.

[0004] The size of the opening depends on preoperative imaging measurements and intraoperative assessment. Due to individual differences, the required opening size varies from patient to patient. This necessitates that the length of the laminoplasty steel bead matches the opening size during surgery. However, current laminoplasty steel bead lengths are fixed, making precise consistency impossible. If a patient requires only a small opening for effective decompression, but the laminoplasty steel bead length exceeds the required opening size, the opening will be too large, causing excessive posterior displacement of the spinal cord, traction on the nerve roots, and potentially leading to C5 nerve root paralysis. Conversely, if a patient requires a larger opening, but the laminoplasty steel bead length is insufficient, the opening will be too small, failing to adequately decompress the spinal cord and resulting in poor surgical outcomes.

[0005] Meanwhile, due to individual differences, the thickness of the vertebral lamina may vary considerably among patients. However, the current height between the support plate 102' and the fixation plate 101' that fix the vertebral lamina 3' is fixed and cannot accommodate vertebral lamina 3' of different thicknesses. If the vertebral lamina 3' is too thick, it needs to be ground down during surgery before it can be placed into the support plate 102' and the fixation plate 101', making the surgical process more complicated, the operation time longer, and increasing the surgical risk for the patient. If the vertebral lamina 3' is too thin, after the plate is placed, the vertebral lamina 3' rests on the support plate 102', and there is a gap between the top surface of the vertebral lamina 3' and the fixation plate 101', which brings subsequent health risks to the patient.

[0006] Furthermore, in posterior laminectomy, the direction of the groove drilled in the lateral mass is perpendicular to the junction of the lateral mass and the lamina, and the groove surface is closer to being perpendicular to the connecting plate 103'. However, the lateral mass support plate 105' of the current laminectomy plate 1' used to support the lateral mass is perpendicular to the lateral mass fixation plate 104' used to fix the lateral mass, rather than perpendicular to the connecting plate 103'. As a result, the lateral mass support plate 105' of the laminectomy plate 1' cannot fit with the groove surface of the lateral mass, reducing the fit and stability of the fixation between the laminectomy plate and the lateral mass. Summary of the Invention

[0007] To address this issue, the present invention provides a lamina-forming steel plate that can adapt to different opening sizes, thereby solving the problem that existing lamina-forming steel plates cannot adapt to different patient opening sizes.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A lamina-forming steel plate adaptable to different opening sizes is characterized by comprising a first fixing plate, a first support plate, a second fixing plate, and a second support plate; the first fixing plate has at least one first fixing hole; the second fixing plate has at least one second fixing hole; the first fixing plate and the first support plate are positioned correspondingly for clamping and fixing the lamina; the second fixing plate and the second support plate are fixed relative to the first support plate, the second fixing plate is fixed to the side block, the second support plate is supported by the side block, and the first support plate lifts the lamina on the opening side, reducing compression on the spinal cord segment; it also includes:

[0010] A first connecting plate is fixedly connected to the first fixing plate; a first supporting plate is connected to the first connecting plate.

[0011] The second connecting plate is fixedly connected to the second fixing plate and the second support plate to form a three-pronged structure; the first connecting plate is located on the surface of the second connecting plate and is slidably connected to the second connecting plate.

[0012] A first fixing device is used to fasten the first connecting plate and the second connecting plate together.

[0013] Furthermore, to address the issue of the support plate failing to fit snugly against the side block groove, the second support plate is perpendicular to the second connecting plate.

[0014] Preferably, the first connecting plate and the first fixing plate are integrally formed into a bent structure, and the included angle between them is greater than 120° and less than 150°; the included angle between the second fixing plate and the second connecting plate is greater than 120° and less than 150°.

[0015] Preferably, it further includes a second fixing device for further securing the first connecting plate and the second connecting plate.

[0016] Optionally, the first support plate is fixedly connected to the first connecting plate via an adapter plate, and its overall structure has two bends; the first fixing plate is parallel to the first support plate.

[0017] Furthermore, to address the issue of adapting to different lamina thicknesses in patients, a third connecting plate 13 is also included; the third connecting plate is located between the surfaces of the first connecting plate and the second connecting plate, and is slidably connected to the first connecting plate and the second connecting plate; the first support plate is fixedly connected to the third connecting plate via a transition plate, and its overall structure is a double-bent structure; the first fixing plate is parallel to the first support plate.

[0018] Optionally, a sliding groove is provided through the first connecting plate along its length; a threaded hole is provided on the second connecting plate; the first fixing device includes a screw; the size of the screw nut is larger than the width of the sliding groove; the screw passes through the sliding groove and is adapted to connect with the threaded hole to achieve fastening of the first connecting plate and the second connecting plate.

[0019] Optionally, both the first and third connecting plates have sliding grooves extending through them along their length; a threaded hole is provided on the second connecting plate; the first fixing device includes a screw; the screw's nut size is larger than the width of the sliding groove; the screw passes through the sliding groove and is adapted to connect with the threaded hole to achieve fastening between the first, second, and third connecting plates.

[0020] Optionally, the second fixing device is a rectangular first fixing sleeve disposed on the second connecting plate; the inner hole of the first fixing sleeve is adapted to the cross-section of the combination of the first connecting plate and the second connecting plate.

[0021] Optionally, the second fixing device is a rectangular second fixing sleeve disposed on the third connecting plate and a rectangular third fixing sleeve disposed on the second connecting plate; the inner hole of the second fixing sleeve is adapted to the cross-section of the combination of the first connecting plate and the third connecting plate; the inner hole of the third fixing sleeve is adapted to the cross-section of the combination of the second connecting plate and the third connecting plate.

[0022] The present invention has at least the following beneficial effects:

[0023] (1) By sliding the first connecting plate and the second connecting plate together, the overall length between the first connecting plate and the second connecting plate is adjustable, so that the vertebral plate forming steel plate of the present invention can adapt to the opening size of different patients.

[0024] (2) By setting a third connecting plate to make a sliding connection between the third connecting plate and the first connecting plate, the distance between the first fixing plate set on the first connecting plate and the first support plate set on the third connecting plate can be adjusted, so that the vertebral plate forming steel plate of the present invention can adapt to the vertebral plate thickness of different patients.

[0025] (3) The second support plate is perpendicular to the second connecting plate, so that the support plate fits the side block groove surface, which increases the fit and stability between the cone plate forming steel plate and the door opening side block.

[0026] This lamina-forming steel plate is highly adaptable, accommodating different opening sizes and lamina thicknesses for different patients. It also features a simple structure, is easy to manufacture, and is quick and easy to operate, thus accelerating the surgical process and reducing the surgical risks for patients. Attached Figure Description

[0027] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed herein.

[0029] Figure 1 This is a front view of a first embodiment of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes.

[0030] Figure 2 This is a right view of a first embodiment of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes.

[0031] Figure 3 This is a top view of a first embodiment of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes.

[0032] Figure 4 This is a right-side structural schematic diagram of a first embodiment of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes.

[0033] Figure 5 This is a front view of Embodiment 2 of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes;

[0034] Figure 6 This is a right view of Embodiment 2 of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes;

[0035] Figure 7 This is a top view of Embodiment 2 of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes;

[0036] Figure 8 This is a right-side structural schematic diagram of Embodiment 2 of the present invention, which uses a cone-shaped steel plate adaptable to different door opening sizes.

[0037] Figure 9 This is a schematic diagram showing the installation status of the vertebral plate forming steel plate;

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. First fixing plate; 2. First connecting plate; 3. First support plate; 4. First fixing hole; 5. Sliding groove; 6. First fixing sleeve; 7. Second fixing plate; 8. Second connecting plate; 9. Second support plate; 10. Second fixing hole; 11. First fixing device; 12. Adapter plate; 13. Third connecting plate; 14. Second fixing sleeve; 15. Third fixing sleeve. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0041] In the description of this invention, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or apparatuses, or steps or units added based on further optimizations of the inventive concept.

[0042] The present invention relates to a conical plate forming steel plate adaptable to different door opening sizes, such as... Figures 1 to 8As shown, the system includes a first fixing plate 1, a first support plate 3, a second fixing plate 7, and a second support plate 9. A first connecting plate 2 is also provided, which is fixedly connected to the first fixing plate 1. The first connecting plate 2 and the first fixing plate 1 form a bent structure, which can be integrally formed or welded together. A second connecting plate 8 is also provided, one end of which is fixedly connected to the second fixing plate 7 and the second support plate 9 to form a three-pronged structure. This structural construction is existing technology and will not be described in detail. A first support plate 3 is provided at the connection between the first connecting plate 2 and the first fixing plate 1. There are two connection methods between the first support plate 3 and the first connecting plate 2, as detailed in Embodiments 1 and 2 below. The first connecting plate 2 and the second connecting plate 8 are connected in a sliding manner. The first support plate 3 and the first fixing plate 1 are located on the same side of the first connecting plate 2. The first fixing plate 1 and the first support plate 3 are positioned correspondingly and used to clamp and fix the vertebral plate. Normally, the first fixing plate 1 and the first support plate 3 are parallel. Because the first connecting plate 2 and the second connecting plate 8 are slidably connected, they can be dynamically adjusted. The overall length of the first connecting plate 2 and the second connecting plate 8 is adjusted to accommodate different door opening sizes. To fix the overall length of the first connecting plate 2 and the second connecting plate 8 after adjustment, a first fixing device 11 is also provided to fasten the first connecting plate 2 and the second connecting plate 8, so that the second fixing plate 7 and the second support plate 9 have a relatively fixed position with the first support plate 3. In this way, the second fixing plate 7 is fixed to the side block, the second support plate 9 is supported by the side block, and the first support plate 3 lifts the vertebral plate on the opening side to reduce the compression of the spinal cord of that segment. At least one first fixing hole 4 is opened in the first fixing plate 1, and screws are installed in the first fixing hole 4 to fix the first fixing plate 1 to the vertebral plate. In this embodiment, there are two first fixing holes 4, which are set along the length direction of the first fixing plate 1. At least one second fixing hole 10 is opened in the second fixing plate 7, and screws are installed in the second fixing hole 10 to fix the second fixing plate 7 to the side block. In this embodiment, there are two second fixing holes 10, which are set along the length direction of the second fixing plate 7.

[0043] Furthermore, to address the issue of the support plate failing to fit snugly against the side block groove, the second support plate 9 is perpendicular to the second connecting plate 8.

[0044] Preferably, in order to achieve optimal repositioning of the vertebral lamina, the first connecting plate 2 and the first fixing plate 1 are integrally formed into a bent structure, with the included angle between the first fixing plate 1 and the first connecting plate 2 being greater than 120° and less than 150°, and the included angle between the second fixing plate 7 and the second connecting plate 8 being greater than 120° and less than 150°.

[0045] Preferably, a second fixing device is also provided to further fasten the first connecting plate 2 and the second connecting plate 8. For the specific structure, please refer to Embodiment 1 and Embodiment 2 below.

[0046] Regarding the connection between the aforementioned first support plate 3 and first connecting plate 2, this embodiment provides the following two specific connection methods.

[0047] Example 1:

[0048] like Figures 1 to 4 As shown, an adapter plate 12 is provided. One end of the adapter plate 12 is fixedly connected to the area where the first connecting plate 2 and the first fixing plate 1 are connected, and the other end is fixedly connected to the first support plate 3. That is, the first support plate 3 is fixedly connected to the first connecting plate 2 via the adapter plate 12. The whole structure forms a "Z"-shaped double-bend structure. The connection method is also to connect them into one piece by integral molding or welding.

[0049] For this structure, this embodiment provides an optional structure for the first fixing device 11, specifically: a sliding groove 5 is provided through the first connecting plate 2 along its length direction, the first fixing device 11 includes a screw and a threaded hole provided on the second connecting plate 8, the size of the screw nut is larger than the width of the sliding groove 5, the screw nut can be a hexagonal cross pan head nut, the length of the screw shank is not less than the sum of the thicknesses of the first connecting plate 2 and the second connecting plate 8, the screw passes through the sliding groove 5 and is adapted to the threaded hole, rotating the screw realizes the fastening connection between the first connecting plate 2 and the second connecting plate 8.

[0050] Meanwhile, in this embodiment, an optional structure of the second fixing device is also provided. Specifically, the second fixing device is a rectangular first fixing sleeve 6. The inner hole of the first fixing sleeve 6 is adapted to the cross-section of the combination of the first connecting plate 2 and the second connecting plate 8. The sleeve is fitted onto the second connecting plate 8, and the end of the first connecting plate 2, which is adjusted to a certain distance, is inserted into the inner hole of the sleeve. The position of the sleeve is adjusted to the area of ​​the first connecting plate 2 away from the end of the first fixing plate 1.

[0051] Example 2:

[0052] This embodiment further addresses the technical problem of adapting to different vertebral lamina thicknesses, such as... Figures 5 to 8 As shown, a third connecting plate 13 and an adapter plate 12 are provided. One end of the adapter plate 12 is fixedly connected to the end of the third connecting plate 13, and the other end is fixedly connected to the first support plate 3. The third connecting plate 13 is placed between the surfaces of the first connecting plate 2 and the second connecting plate 8, and is slidably connected to the first connecting plate 2 and the second connecting plate 8. That is, the first support plate 3 is fixedly connected to the third connecting plate 13 via the adapter plate 12, and is slidably connected to the first connecting plate 2. When it slides on the first connecting plate 2, the distance between the first support plate 3 and the first fixed plate 1 can be adjusted to accommodate different vertebral plate thicknesses. The third connecting plate 13, the adapter plate 12 and the first support plate 3 together form a "Z"-shaped double-bend structure. Their connection method is also to be integrated by integral molding or welding.

[0053] For this structure, this embodiment provides an optional structure for the first fixing device 11, specifically: a sliding groove 5 is provided through the first connecting plate 2 and the third connecting plate 13 along the length direction. The first fixing device 11 includes a screw and a threaded hole provided on the second connecting plate 8. The size of the screw nut is larger than the width of the sliding groove 5. The screw nut can be a hexagonal cross pan head nut. The length of the screw shank is not less than the sum of the thicknesses of the first connecting plate 2, the second connecting plate 8 and the third connecting plate 13. The screw passes through the sliding groove 5 and is adapted to the threaded hole for connection. Rotating the screw realizes the fastening connection of the first connecting plate 2, the second connecting plate 8 and the third connecting plate 13.

[0054] Meanwhile, in this embodiment, an optional structure of the second fixing device is also provided. Specifically, the second fixing device is a rectangular second fixing sleeve 14 and a rectangular third fixing sleeve 15. The inner hole of the second fixing sleeve 14 is adapted to the cross-section of the combination of the first connecting plate 2 and the third connecting plate 13. The sleeve is fitted onto the third connecting plate 13, and the end of the first connecting plate 2, after adjusting the distance, is inserted into the inner hole of the sleeve. The position of the sleeve is adjusted to the area of ​​the first connecting plate 2 away from the end of the first fixing plate 1. The inner hole of the third fixing sleeve 15 is adapted to the cross-section of the combination of the second connecting plate 8 and the third connecting plate 13. The sleeve is fitted onto the second connecting plate 8, and the end of the third connecting plate 13, after adjusting the distance, is inserted into the inner hole of the sleeve. The position of the sleeve is adjusted to the area of ​​the third connecting plate 13 away from the end of the first support plate 3.

[0055] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0056] The present invention has been described in detail above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A laminoplasty plate that can adapt to different door opening sizes, comprising a first fixed plate (1), a first support plate (3), a second fixed plate (7) and a second support plate (9); the first fixed plate (1) is provided with at least one first fixed hole (4); the second fixed plate (7) is provided with at least one second fixed hole (10); the first fixed plate (1) corresponds to the first support plate (3) in position, and is used for clamping and fixing the lamina; the second fixed plate (7) and the second support plate (9) are fixed relative to the first support plate (3), the second fixed plate (7) is fixed on the side block, the second support plate (9) is supported by the side block, the first support plate (3) lifts the lamina on the door opening side, and the compression on the spinal cord is reduced; characterized in that, Also include: The first connecting plate (2) is fixedly connected with the first fixed plate (1); the first supporting plate (3) is connected with the first connecting plate (2); The second connecting plate (8) is fixedly connected with the second fixed plate (7) and the second supporting plate (9) to form a three-prong structure; the first connecting plate (2) is located on the surface of the second connecting plate (8) and is slidably connected with the second connecting plate (8); The first fixing device (11) is used for fastening the first connecting plate (2) and the second connecting plate (8) together; The second supporting plate (9) is perpendicular to the second connecting plate (8); The laminectomy forming steel plate suitable for different door opening sizes further comprises a second fixing device for further fastening the first connecting plate (2) and the second connecting plate (8); The first supporting plate (3) is fixedly connected with the first connecting plate (2) through the adapter plate (12), and the whole is in a two-bending structure; the first fixed plate (1) is parallel to the first supporting plate (3); the second fixing device is a rectangular first fixing sleeve (6) arranged on the second connecting plate (8); the inner hole of the first fixing sleeve (6) and the cross section of the combination of the first connecting plate (2) and the second connecting plate (8) are adapted to each other.

2. The laminoplasty plate capable of adapting to different door opening sizes according to claim 1, wherein The first connecting plate (2) and the first fixed plate (1) form a bending structure as a whole, and the included angle therebetween is greater than 120° and less than 150°; the included angle between the second fixed plate (7) and the second connecting plate (8) is greater than 120° and less than 150°.

3. The laminoplasty plate capable of adapting to different door opening sizes according to claim 1, wherein A sliding groove (5) is provided on the first connecting plate (2) along the length direction; a threaded hole is arranged on the second connecting plate (8); the first fixing device (11) comprises a screw; the size of the screw nut is greater than the width of the sliding groove (5); the screw is connected with the threaded hole in a matched mode through the sliding groove (5), so as to fasten the first connecting plate (2) and the second connecting plate (8).

4. A laminoplasty plate capable of adapting to different door opening sizes, comprising a first fixed plate (1), a first support plate (3), a second fixed plate (7) and a second support plate (9); the first fixed plate (1) is provided with at least one first fixed hole (4); the second fixed plate (7) is provided with at least one second fixed hole (10); the first fixed plate (1) is positionally corresponding to the first support plate (3) and is used for clamping and fixing the lamina; the second fixed plate (7) and the second support plate (9) are fixedly opposite to the first support plate (3), the second fixed plate (7) is fixed on a side block, the second support plate (9) is supported by the side block, the first support plate (3) lifts the lamina on the door opening side to reduce the compression on the spinal cord; characterized in that, Also include: The first connecting plate (2) is fixedly connected with the first fixed plate (1); the first supporting plate (3) is connected with the first connecting plate (2); The second connecting plate (8) is fixedly connected with the second fixed plate (7) and the second supporting plate (9) to form a three-prong structure; the first connecting plate (2) is located on the surface of the second connecting plate (8) and is slidably connected with the second connecting plate (8); The first fixing device (11) is used for fastening the first connecting plate (2) and the second connecting plate (8) together; The second supporting plate (9) is perpendicular to the second connecting plate (8); The laminectomy forming steel plate suitable for different door opening sizes further comprises a second fixing device for further fastening the first connecting plate (2) and the second connecting plate (8); The laminoplasty steel plate adaptable to different door opening sizes further comprises a third connecting plate (13), the third connecting plate (13) is located between the surfaces of the first connecting plate (2) and the second connecting plate (8) and is in sliding connection with the first connecting plate (2) and the second connecting plate (8), the first supporting plate (3) is fixedly connected with the third connecting plate (13) through the adapter plate (12), and the whole is in a two-bending structure, the second fixing device is a rectangular second fixing sleeve (14) arranged on the third connecting plate (13) and a rectangular third fixing sleeve (15) arranged on the second connecting plate (8), the inner hole of the second fixing sleeve (14) is adapted to the cross section of the combination of the first connecting plate (2) and the third connecting plate (13), and the inner hole of the third fixing sleeve (15) is adapted to the cross section of the combination of the second connecting plate (8) and the third connecting plate (13).

5. The laminoplasty plate capable of adapting to different door sizes according to claim 4, wherein The first connecting plate (2) and the third connecting plate (13) are each provided with a sliding groove (5) extending along the length direction, a threaded hole is arranged on the second connecting plate (8), the first fixing device (11) comprises a screw, the size of the screw nut of the screw is greater than the width of the sliding groove (5), and the screw is in adaptive connection with the threaded hole through the sliding groove (5), so that the first connecting plate (2), the second connecting plate (8) and the third connecting plate (13) are fastened.

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