Spine fusion cage

Abstract

The invention relates to a spinal fusion cage which comprises a first supporting plate, a second supporting plate and an adjusting device. The two first supporting plates are arranged in the first direction. The second supporting plate and the first supporting plate are arranged at intervals in the second direction. The adjusting device is connected with the first and second supporting plates; when the adjusting device is operated, the two first supporting plates can get close to each other or get away from each other in the first direction, and meanwhile the second supporting plates and the first supporting plates are driven to get close to each other or get away from each other in the second direction. When the spine fusion cage needs to be implanted into the spine of a patient, the spine fusion cage can be adjusted to be in a retraction state at the moment, so that the spine fusion cage is in a minimum-size state, a wound needing to be formed during implantation is smaller, implantation is facilitated, and meanwhile the recovery speed of the wound is increased. Meanwhile, when the spine fusion cage is implanted into the spine, the spine fusion cage expands in the height direction and the width direction of the spine fusion cage, so that the supporting area on the spine is larger, and the treatment effect on a patient is better.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a spinal fusion device. Background Art

[0002] Spinal fusion devices are widely used as medical devices for the treatment of spinal diseases. However, when the spinal fusion device is implanted in the spine, a large incision needs to be made on the spine for implantation. This causes a large wound to the patient during the operation of implanting the spinal fusion device, which slows down the patient's recovery. Moreover, when it is implanted in the spine, its own stability is also poor, which leads to poor treatment effect for the patient. Summary of the invention

[0003] Based on this, it is necessary to provide a spinal fusion device to address the technical problem that when the spinal fusion device is implanted in the spine, it will cause a large wound to the patient, making the patient's recovery speed slower, and when it is implanted in the spine, its own stability is also poor, which in turn leads to poor treatment effect for the patient.

[0004] A spinal fusion cage, comprising:

[0005] A first support plate, wherein the number of the first support plates is two, and the two first support plates are arranged along a first direction;

[0006] A second support plate, the second support plate and the first support plate are spaced apart along a second direction, and the second direction is arranged at an angle to the first direction;

[0007] An adjusting device is connected to the first support plate and the second support plate; when the adjusting device is operated, the two first support plates can be moved closer to or farther away from each other in the first direction, and at the same time, the second support plate and the first support plate can be moved closer to or farther away from each other in the second direction.

[0008] In one of the embodiments, the adjustment device includes an adjustment member, a moving assembly and a sliding rod assembly;

[0009] The adjusting member is slidably connected to the first supporting plate;

[0010] The moving assembly is fixedly connected to the first supporting plate, and the moving assembly is slidably connected to the adjusting member, and the moving assembly is movably connected to the sliding rod assembly;

[0011] The side of the sliding rod assembly facing away from the moving assembly is slidably connected to the second supporting plate;

[0012] When the moving assembly slides relative to the adjusting member, it can drive the first support plate to move along the first direction, and at the same time drive one side of the sliding rod assembly to slide relative to the second support plate, so that the second support plate moves closer to or farther from the first support plate along the second direction.

[0013] In one embodiment, the moving assembly includes a first moving member and a second moving member; the first moving member is connected to the first supporting plate by clamping, and the second moving member passes through the adjusting member and abuts against the first moving member;

[0014] When the second moving member moves relative to the adjusting member along the third direction, it can drive the first moving member to move, so that the first moving member drives the first supporting plate to slide relative to the adjusting member and move along the first direction, and at the same time, the sliding rod assembly slides relative to the second supporting plate, so that the second supporting plate moves closer to or farther from the first supporting plate along the second direction;

[0015] Wherein, the third direction is arranged at an angle with the first direction and the second direction.

[0016] In one embodiment, the sliding rod assembly includes a first sliding rod and a second sliding rod rotatably connected to each other;

[0017] One end of the first sliding rod is connected to the first moving member, and the other end of the first sliding rod is slidably connected to the second supporting plate; one end of the second sliding rod is rotatably connected to the adjusting member, and the other end of the second sliding rod is slidably connected to the second supporting plate;

[0018] When the first moving member moves along the third direction, ends of the first sliding rod and the second sliding rod on the same side in the second direction can approach or move away from each other.

[0019] In one embodiment, a first limiting groove and a second limiting groove are respectively formed on both sides of the second supporting plate along the first direction;

[0020] A first limiting column is protruded along the first direction on one side of the first sliding rod close to the second supporting plate, and the first limiting column is slidably disposed in the first limiting groove;

[0021] A second limiting column is protruded along the first direction on one side of the second sliding rod close to the second supporting plate, and the second limiting column is slidably disposed in the second limiting groove.

[0022] In one of the embodiments, the two first support plates are respectively configured with engaging grooves that are oppositely arranged along the first direction, and two ends of the first moving member along the first direction are respectively engaged in the engaging grooves.

[0023] In one embodiment, a first inclined surface is configured on the adjusting member, and a second inclined surface is configured on the first supporting plate. The first inclined surface cooperates with the second inclined surface so that the first supporting plate can slide relative to the adjusting member.

[0024] In one embodiment, the adjusting member is further provided with a limiting boss, and the first supporting plate is provided with a limiting groove;

[0025] When the spinal fusion device is at the target position of the expanded state, the limiting boss is clamped in the limiting groove.

[0026] In one embodiment, the adjusting member is configured with a first abutting surface, and the first supporting plate is configured with a second abutting surface; the first abutting surface and the second abutting surface are both extended along a third direction;

[0027] When the spinal fusion cage is at a target position in an expanded state, the first abutting surface abuts against the second abutting surface.

[0028] In one embodiment, the spinal fusion device further comprises a third limiting column, one end of which is fixedly connected to the first support plate;

[0029] The adjusting member is configured with a third limiting groove, and the other end of the third limiting column is slidably disposed in the third limiting groove;

[0030] When the first supporting plate slides relative to the adjusting member, the third limiting column slides in the third limiting groove.

[0031] In one embodiment, the side wall of the first support plate along the first direction is the first side wall, and the side wall of the second support plate along the first direction is the second side wall;

[0032] When the spinal fusion cage is in a retracted state, the first side wall and the second side wall located on the same side are in different planes;

[0033] When the spinal fusion cage is in the target position of the expanded state, the first side wall and the second side wall located on the same side are in the same plane.

[0034] When the spinal fusion device is implanted in the spine of a patient, if the spinal fusion device needs to be adjusted to a retracted state, the adjustment device can be operated so that the two first support plates are close to each other in the first direction, and the second support plate and the first support plate are close to each other in the second direction, so as to adjust the spinal fusion device to a retracted state, so that the size of the entire spinal fusion device is in a minimum state, so that the wound required for implantation is smaller, which is convenient for implantation and also helps to improve the recovery speed of the wound. At the same time, when the spinal fusion device is implanted in the spine, the adjustment device can be operated so that the two first support plates are separated from each other in the first direction, and the second support plate and the first support plate are separated from each other in the second direction, so as to adjust the spinal fusion device to an expanded state, so that the size of the entire spinal fusion device along the first direction and the size along the second direction are expanded at the same time, that is, the spinal fusion device can be expanded in both its own height direction and width direction, so that the size of the entire spinal fusion device becomes larger, and the support area for the spine is larger, so that the stability of the spine is better, and the treatment effect for the patient is also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of a spinal fusion cage provided in an embodiment of the present application in a retracted state.

[0036] Figure 2 for Figure 1 A top view of a spinal fusion cage is shown.

[0037] Figure 3 for Figure 1 An exploded view of a spinal fusion cage is shown.

[0038] Figure 4 for Figure 1 Posterior view of the spinal fusion cage shown.

[0039] Figure 5 for Figure 1 Left side view of the spinal fusion cage shown.

[0040] Figure 6 for Figure 1 The diagram shows a first cooperation diagram of a first support plate and an adjusting member in a spinal fusion cage.

[0041] Figure 7 for Figure 1 The second schematic diagram of the cooperation between the first support plate and the adjusting member in the spinal fusion cage is shown.

[0042] Figure 8 for Figure 1 A schematic diagram of an adjustment device in a spinal fusion cage is shown.

[0043] Fig. 9 for Figure 1Schematic diagram of the target position of the spinal fusion cage in the deployed state.

[0044] Fig.10 for Fig. 9 A top view of a spinal fusion cage is shown.

[0045] Fig.11 for Fig. 9 Posterior view of the spinal fusion cage shown.

[0046] Fig.12 for Fig. 9 Left side view of the spinal fusion cage shown.

[0047] Fig.13 for Fig. 9 The diagram shows a first cooperation diagram of a first support plate and an adjusting member in a spinal fusion cage.

[0048] Fig.14 for Fig. 9 The second schematic diagram of the cooperation between the first support plate and the adjusting member in the spinal fusion cage is shown.

[0049] Fig.15 for Fig. 9 A schematic diagram of the cooperation between the first support plate, the adjusting member and the third limiting column in the spinal fusion cage is shown.

[0050] Fig.16 for Fig. 9 A schematic diagram of an adjustment device in a spinal fusion cage is shown.

[0051] Fig.17 for Fig. 9 The diagram shows the cooperation between the sliding assembly in the spinal fusion cage and the second support plate.

[0052] Fig.18 for Figure 1 A schematic diagram of a second support plate in a spinal fusion cage is shown.

[0053] Fig.19 for Figure 1 A first schematic diagram of an adjustment member in a spinal fusion cage is shown.

[0054] Fig. 20 for Figure 1 A second schematic diagram of an adjustment member in a spinal fusion cage is shown.

[0055] Fig.21 for Figure 1 Schematic diagram of a spinal fusion cage implanted in the spine.

[0056] Figure markings: 100-first support plate; 110-second inclined surface; 120-limiting groove; 130-first side wall; 140-clamping groove; 150-second abutment surface; 200-second support plate; 210-first limiting groove; 220-second limiting groove; 230-second side wall; 300-adjusting device; 310-adjusting member; 311-first inclined surface; 312-limiting boss; 313-third limiting groove; 3131-first section; 3132-second section; 314-adjusting hole; 315-first abutment surface; 320-moving assembly; 321-first moving member; 322-second moving member; 330-sliding rod assembly; 331-first sliding rod; 3311-first limiting column; 332-second sliding rod; 3321-second limiting column; 400-third limiting column; 500-spine. DETAILED DESCRIPTION

[0057] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0058] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0059] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0063] A spinal fusion device is a medical device used to treat lumbar degenerative instability caused by various reasons, combined with intervertebral disc herniation or spinal stenosis, or lumbar spondylolisthesis. During the treatment process, the spinal fusion device needs to be expanded to a larger size in order to expand the patient's spine 500 to a sufficient height, thereby allowing the patient to recover a better physiological structure. However, since the size and structure of traditional spinal fusion devices are relatively fixed, when it needs to be implanted into the spine 500, due to the limited space between the vertebrae 500 themselves, or when the gap between the vertebrae 500 becomes smaller due to lesions, the spinal fusion device needs to be knocked into the spine 500, which causes a larger wound to the patient or damages the patient's bones, which not only makes the entire operation more difficult, but also slows down the patient's recovery speed; at the same time, when the spinal fusion device is implanted into the spine 500, its own stability is poor, which makes the treatment effect on the patient poor.

[0064] In view of the above technical problems, the present application provides a spinal fusion device. Figure 1-Figure 17 , Figure 1 A schematic diagram showing a spinal fusion cage provided by an embodiment of the present application in a retracted state is shown. Figure 2 Shows Figure 1 A top view of a spinal fusion cage is shown. Figure 3 Shows Figure 1 An exploded view of a spinal fusion cage is shown. Figure 4 Shows Figure 1 Posterior view of the spinal fusion cage shown. Figure 5 Shows Figure 1 Left side view of the spinal fusion cage shown. Figure 6 Shows Figure 1 The first schematic diagram of the cooperation between the first support plate 100 and the adjusting member 310 in the spinal fusion cage is shown. Figure 7 Shows Figure 1 The second schematic diagram of the cooperation between the first support plate 100 and the adjusting member 310 in the spinal fusion cage is shown. Figure 8 Shows Figure 1 A schematic diagram of an adjustment device 300 in a spinal fusion cage is shown. Fig. 9 Shows Figure 1 Schematic diagram of the target position of the spinal fusion cage in the deployed state. Fig.10 Shows Fig. 9 A top view of a spinal fusion cage is shown. Fig.11 Shows Fig. 9 Posterior view of the spinal fusion cage shown. Fig.12 Shows Fig. 9 Left side view of the spinal fusion cage shown. Fig.13 Shows Fig. 9 The first schematic diagram of the cooperation between the first support plate 100 and the adjusting member 310 in the spinal fusion cage is shown. Fig.14 Shows Fig. 9 The second schematic diagram of the cooperation between the first support plate 100 and the adjusting member 310 in the spinal fusion cage is shown. Fig.15 Shows Fig. 9 The diagram shows the cooperation between the first support plate 100, the adjustment member 310 and the third limiting column 400 in the spinal fusion cage. Fig.16 Shows Fig. 9 A schematic diagram of an adjustment device 300 in a spinal fusion cage is shown. Fig.17 Shows Fig. 9 The diagram shows the cooperation between the sliding assembly in the spinal fusion cage and the second support plate 200 .

[0065] The spinal fusion device provided in one embodiment of the present application includes a first support plate 100, a second support plate 200 and an adjustment device 300. The number of the first support plates 100 is two, and the two first support plates 100 are arranged along a first direction. Specifically, the first direction is Figure 1 , Figure 3-Figure 9 and Figure 11-Figure 15 The second support plate 200 and the first support plate 100 are spaced apart along the second direction, the second direction is set at an angle to the first direction, specifically, the second direction is Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Fig. 9 , Fig.10 and Fig.12 adjustment device 300 is connected to the first support plate 100 and the second support plate 200; and when the adjustment device 300 is operated, it can make the two first support plates 100 approach or move away from each other in the first direction, while driving the second support plate 200 and the first support plate 100 in the second direction. Approximately or away from each other.

[0066] When the above-mentioned spinal fusion device needs to be implanted in the patient's spine 500, if it is necessary to adjust the spinal fusion device to a retracted state, the adjustment device 300 can be operated so that the two first support plates 100 are close to each other in the first direction, and the second support plate 200 and the first support plate 100 are close to each other in the second direction, so as to adjust the spinal fusion device to a retracted state, so that the size of the entire spinal fusion device is in a minimum state, so that the incision required for implantation is smaller, which is convenient for implantation and also helps to improve the recovery speed of the incision. At the same time, when the spinal fusion device is implanted in the spine, the adjustment device 300 can be operated so that the two first support plates 100 are away from each other in the first direction, and the second support plate 200 and the first support plate 100 are away from each other in the second direction, so as to adjust the spinal fusion device to an expanded state, so that the size of the entire spinal fusion device along the first direction and the size along the second direction are expanded at the same time, that is, the spinal fusion device in its own height direction ( Figure 1 and Fig. 9 yy' direction) and width direction ( Figure 1 and Fig. 9 The spinal fusion cage can be expanded in the zz' direction, thereby increasing the size of the entire spinal fusion cage and providing a larger support area for the spine 500, thereby improving the stability of the spine 500 and providing a better treatment effect for the patient.

[0067] See also Fig.21 , Fig.21 Shows Figure 1The spinal fusion device shown is implanted in the spine 500. It should be noted that when the spinal fusion device is implanted in the spine 500, Fig.21 The direction indicated by y' is the position of the patient's chest, the direction indicated by y is the patient's back, the direction indicated by x' is the patient's left side, and the direction indicated by x is the patient's right side.

[0068] It should be noted that when the spinal fusion device of the present application is implanted into the front end of the spine 500, it can support the spine 500 along the longitudinal axis when it is adjusted to the expanded state by the adjustment device 300. Fig.21 The front and rear parts in the yy' direction are more stable than the oblique and front methods.

[0069] The following is a detailed description of the structure of the spinal fusion cage. Figure 18-Figure 20 , Fig.18 Shows Figure 1 FIG. 2 is a schematic diagram of a second support plate 200 in a spinal fusion cage. Fig.19 Shows Figure 1 A first schematic diagram of an adjustment member 310 in a spinal fusion cage is shown. Fig. 20 Shows Figure 1 A second schematic diagram of an adjustment member 310 in a spinal fusion cage is shown.

[0070] See also Figure 3 , and combined with Fig. 9 , Fig.10 , Fig.16 and Fig.17 The adjusting device 300 of the spinal fusion device provided in one embodiment of the present application includes an adjusting member 310, a moving assembly 320 and a sliding rod assembly 330; the adjusting member 310 is slidably connected to the first support plate 100; the moving assembly 320 is fixedly connected to the first support plate 100, and the moving assembly 320 is slidably connected to the adjusting member 310, and the moving assembly 320 is movably connected to the sliding rod assembly 330; the side of the sliding rod assembly 330 away from the moving assembly 320 is slidably connected to the second support plate 200; when the moving assembly 320 slides relative to the adjusting member 310, it can drive the first support plate 100 to move along the first direction, and at the same time drive one side of the sliding rod assembly 330 to slide relative to the second support plate 200, so that the second support plate 200 is closer to or farther away from the first support plate 100 along the second direction.

[0071] Through the cooperation of the adjusting member 310, the moving assembly 320 and the sliding assembly, when the moving assembly 320 slides relative to the adjusting member 310, the first support plates 100 can be moved closer to or farther away from each other along the first direction, and the second support plates 200 can be moved closer to or farther away from the first support plates 100 along the second direction, thereby reducing or expanding the size of the entire spinal fusion cage along the first direction and the size along the second direction at the same time, thereby reducing or expanding the size of the entire spinal fusion cage, and the movement control process is simple and convenient.

[0072] See also Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.12 and Fig.16 The moving assembly 320 of the spinal fusion device provided in an embodiment of the present application includes a first moving member 321 and a second moving member 322; the first moving member 321 is connected to the first support plate 100 by being clamped, and the second moving member 322 passes through the adjusting member 310 and abuts against the first moving member 321; when the second moving member 322 moves relative to the adjusting member 310 along the third direction, it can drive the first moving member 321 to move, so that the first moving member 321 drives the first support plate 100 to slide relative to the adjusting member 310 and move along the first direction, and at the same time, the sliding rod assembly 330 slides relative to the second support plate 200, so that the second support plate 200 moves closer to or away from the first support plate 100 along the second direction; wherein the third direction is set at an angle to the first direction and the second direction, and specifically, the third direction is Figure 3 , Figure 6 , Fig. 9 and Fig.13 By the cooperation between the second moving member 322 and the first moving member 321, when the second moving member 322 moves along the third direction relative to the adjusting member 310, the first supporting plate 100 can be driven to move along the first direction, and the second supporting plate 200 can be driven to move along the second direction, and the control of the entire moving process is very simple and convenient.

[0073] See also Figure 3 , Figure 8 , Fig. 9 , Fig.10 , Fig.16 and Fig.17The sliding rod assembly 330 of the spinal fusion device provided in one embodiment of the present application includes a first sliding rod 331 and a second sliding rod 332 that are rotatably connected to each other; one end of the first sliding rod 331 is connected to the first movable member 321, and the other end of the first sliding rod 331 is slidably connected to the second support plate 200; one end of the second sliding rod 332 is rotatably connected to the adjustment member 310, and the other end of the second sliding rod 332 is slidably connected to the second support plate 200; when the first movable member 321 moves along the third direction, the ends of the first sliding rod 331 and the second sliding rod 332 on the same side in the second direction can approach or move away from each other.

[0074] When the first moving member 321 moves along the third direction driven by the second moving member 322, the first sliding rod 331 and the second sliding rod 332 are relatively close to or away from one end of the first support plate 100, thereby driving the first sliding rod 331 and the second sliding rod 332 to slide relative to the second support plate 200, so that the distance between the second support plate 200 and the first support plate 100 changes, so that the size of the spinal fusion device along the second direction is expanded or reduced.

[0075] See also Fig.17 and Fig.18 The second support plate 200 of the spinal fusion device provided in one embodiment of the present application is respectively provided with a first limiting groove 210 and a second limiting groove 220 on both sides along the first direction; a first limiting column 3311 is convexly provided on one side of the first sliding rod 331 close to the second support plate 200 along the first direction, and the first limiting column 3311 is slidably disposed in the first limiting groove 210; a second limiting column 3321 is convexly provided on one side of the second sliding rod 332 close to the second support plate 200 along the first direction, and the second limiting column 3321 is slidably disposed in the second limiting groove 220. Through the cooperation between the first limiting column 3311 and the first limiting groove 210, and the cooperation between the second limiting column 3321 and the second limiting groove 220, when the spinal fusion device is adjusted from the retracted state to the expanded state, the sliding of the first sliding rod 331 and the second sliding rod 332 is safer.

[0076] In one specific embodiment, when the spinal fusion device is in the target position of the expanded state, the first limiting column 3311 abuts against the groove wall of the first limiting groove 210 in the third direction, and the second limiting column 3321 abuts against the groove wall of the second limiting groove 220 in the third direction. By the cooperation between the first limiting column 3311 and the first limiting groove 210, and the cooperation between the second limiting column 3321 and the second limiting groove 220, when the spinal fusion device is in the target position of the expanded state, that is, Fig.10When the spinal fusion device is in the middle position, the maximum sliding distance of the first sliding rod 331 and the second sliding rod 332 can be controlled by the abutment between the groove wall of the first limiting groove 210 in the third direction and the groove wall of the second limiting groove 220 in the third direction, so that when the spinal fusion device is unfolded along the second direction, the maximum unfolded size can be determined, and the treatment of the patient is more accurate.

[0077] See also Figure 3 , Figure 7 and Fig. 9 The two first support plates 100 of the spinal fusion device provided in one embodiment of the present application are respectively configured with engaging grooves 140 arranged opposite to each other along the first direction, and the two ends of the first moving member 321 along the first direction are respectively engaged in the engaging grooves 140. Through the engaging cooperation between the engaging grooves 140 and the first moving member 321, when the second moving member 322 drives the first moving member 321 to move along the third direction, the first moving member 321 can drive the first support plate 100 to move, and the engaging cooperation between the engaging grooves 140 and the first moving member 321 is also easy to disassemble and assemble.

[0078] See also Figure 6 , Fig.13 and Fig.15 The adjusting member 310 of the spinal fusion device provided in one embodiment of the present application is configured with a first inclined surface 311, and the first support plate 100 is configured with a second inclined surface 110, and the first inclined surface 311 cooperates with the second inclined surface 110 so that the first support plate 100 can slide relative to the adjusting member 310. When the first moving member 321 drives the first support plate 100 to move, the first support plate 100 slides relative to the adjusting member 310 through the cooperation of the first inclined surface 311 and the second inclined surface 110, thereby making the movement process of the first support plate 100 more stable.

[0079] See also Fig.13 The spinal fusion device provided in one embodiment of the present application further has a limiting boss 312 on the adjusting member 310 and a limiting groove 120 on the first support plate 100 ; when the spinal fusion device is in the target position of the expanded state, the limiting boss 312 is engaged in the limiting groove 120 .

[0080] Through the cooperation between the limiting boss 312 and the limiting groove 120, when the spinal fusion cage is in the target position in the expanded state, that is, Fig.13 The position shown can prevent the first support plate 100 from continuing to slide relative to the adjusting member 310, so that when the spinal fusion device is unfolded along the first direction, the maximum unfolded size can be determined, and the treatment of the patient is more accurate; at the same time, it can also prevent the first support plate 100 and the adjusting member 310 from slipping when the first support plate 100 slides relative to the adjusting member 310, and the sliding process of the first support plate 100 is safer.

[0081] It should be noted that by setting the height of the first inclined surface 311 along the first direction, that is, Fig.15 The height along the zz' direction can determine the maximum size of the spinal fusion cage after it is deployed along the first direction when the spinal fusion cage is in the target position of the deployed state.

[0082] See also Fig.15 The adjusting member 310 of the spinal fusion device provided in one embodiment of the present application is configured with a first abutting surface 315, and the first support plate 100 is configured with a second abutting surface 150; the first abutting surface 315 and the second abutting surface 150 are both extended along a third direction, specifically, the third direction is the length direction of the adjusting member 310, that is, Fig.15 when the spinal fusion cage is in the target position of the expanded state, the first abutment surface 315 abuts against the second abutment surface 150.

[0083] Since the first abutting surface 315 and the second abutting surface 150 are both extended along the third direction, when the spinal fusion cage is in the target position of the unfolded state, the first support plate 100 and the adjusting member 310 are in contact with each other through the plane area where the first abutting surface 315 and the second abutting surface 150 cooperate, and the stability is better. Compared with the inclined support or threaded support, the spinal fusion cage is less likely to fail.

[0084] In one specific embodiment, the second moving member 322 is a threaded connector, which is threadedly connected to the adjusting member 310. When the second moving member 322 is screwed, the second moving member 322 can be moved along the third direction relative to the adjusting member 310. In the present application, since the first abutting surface 315 and the second abutting surface 150 are in contact with each other in a planar area, and the support after unfolding is achieved by the surface contact between the first abutting surface 315 and the second abutting surface 150, the thread of the second moving member 322 will not be stressed, and the service life of the second moving member 322 will be longer.

[0085] See also Figure 3 and Fig.15 and Fig. 20The spinal fusion device provided in one embodiment of the present application further includes a third limiting column 400, one end of which is fixedly connected to the first support plate 100; the adjustment member 310 is configured with a third limiting groove 313, and the other end of the third limiting column 400 is slidably connected to the groove wall of the third limiting groove 313; when the first support plate 100 slides relative to the adjustment member 310, the third limiting column 400 slides relative to the groove wall of the third limiting groove 313. When the first support plate 100 slides relative to the adjustment member 310, the third limiting column 400 can cooperate with the third limiting groove 313 to make the sliding process of the first support plate 100 safer, and at the same time, it can also prevent the first support plate 100 from falling out relative to the adjustment member 310, making it safer.

[0086] In one specific embodiment, the limiting column 400 is arranged along the second direction, that is, Figure 1 The yy' direction in .

[0087] See also Fig.15 In one specific embodiment, the third limiting groove 313 includes a first section 3131 and a second section 3132 connected to each other, wherein the first section 3131 is in the shape of an inclined plane, and the first section 3131 is parallel to the first inclined plane 311, and the length of the first section 3131 is the same as the length of the first inclined plane 311. The second section 3132 is parallel to the first abutting surface 315, and the length of the second section 3132 is the same as the length of the first abutting surface 315, so that when the first support plate 100 slides relative to the adjustment member 310, the third limiting column 400 can slide correspondingly in the first section 3131 and the second section 3132, and the sliding process is smooth without jamming.

[0088] See also Figure 5 and Fig.12 , the side wall of the first support plate 100 along the first direction is the first side wall 130, and the side wall of the second support plate 200 along the first direction is the second side wall 230; please refer to Figure 5 When the spinal fusion device provided by an embodiment of the present application is in a retracted state, the first side wall 130 and the second side wall 230 located on the same side are on different planes. Fig.12 When the spinal fusion cage is in the target position of the expanded state, the first side wall 130 and the second side wall 230 located on the same side are in the same plane, that is, Fig.12 By this arrangement, when the spinal fusion device of the present application is in the target position of the expanded state, the entire spinal fusion device is along the first direction, that is, Fig.12 The side walls on both sides of the zz' direction can be in the same plane, thereby effectively ensuring a distraction angle of the spinal fusion cage after distraction, thereby restoring the physiological angle of the spine 500.

[0089] It should be noted that when the spinal fusion cage is in the retracted state, that is, Figure 5 In the state of being in the middle, the first side wall 130 and the second side wall 230 located on the same side are on different planes but are parallel to each other, and both the first side wall 130 and the second side wall 230 are inclined surfaces, that is, they have a certain inclination angle in the second direction. Fig.12 When the target position of the expanded state is shown, the first side wall 130 and the second side wall 230 located on the same side can be in the same plane, and the plane has a certain inclination angle relative to the vertical plane, thereby effectively ensuring an expansion angle of the spinal fusion cage after expansion, thereby restoring the physiological angle of the spine 500.

[0090] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A spinal fusion cage, characterized in that: The spinal fusion cage comprises: A first support plate (100), wherein the number of the first support plates (100) is two, and the two first support plates (100) are arranged along a first direction; a second support plate (200), the second support plate (200) and the first support plate (100) being arranged at an interval along a second direction, the second direction being arranged at an angle to the first direction; An adjusting device (300), wherein the adjusting device (300) is connected to the first supporting plate (100) and the second supporting plate (200); when the adjusting device (300) is operated, the two first supporting plates (100) can be moved closer to or farther away from each other in the first direction, and at the same time, the second supporting plate (200) and the first supporting plate (100) can be driven to move closer to or farther away from each other in the second direction.

2. The spinal fusion cage according to claim 1, characterized in that: The adjusting device (300) comprises an adjusting member (310), a moving assembly (320) and a sliding rod assembly (330); The adjusting member (310) is slidably connected to the first supporting plate (100); The moving assembly (320) is fixedly connected to the first support plate (100), the moving assembly (320) is slidably connected to the adjusting member (310), and the moving assembly (320) is movably connected to the sliding rod assembly (330); The side of the sliding rod assembly (330) facing away from the moving assembly (320) is slidably connected to the second supporting plate (200); When the moving assembly (320) slides relative to the adjusting member (310), it can drive the first support plate (100) to move along the first direction, and at the same time drive one side of the sliding rod assembly (330) to slide relative to the second support plate (200), so that the second support plate (200) moves closer to or farther away from the first support plate (100) along the second direction.

3. The spinal fusion cage according to claim 2, characterized in that: The moving component (320) comprises a first moving member (321) and a second moving member (322); the first moving member (321) is connected to the first supporting plate (100) by snapping, and the second moving member (322) passes through the adjusting member (310) and abuts against the first moving member (321); When the second moving member (322) moves relative to the adjusting member (310) along the third direction, it can drive the first moving member (321) to move, so that the first moving member (321) drives the first support plate (100) to slide relative to the adjusting member (310) and move along the first direction, and at the same time, the sliding rod assembly (330) slides relative to the second support plate (200), so that the second support plate (200) moves closer to or farther from the first support plate (100) along the second direction; Wherein, the third direction is arranged at an angle with the first direction and the second direction.

4. The spinal fusion cage according to claim 3, characterized in that: The sliding rod assembly (330) comprises a first sliding rod (331) and a second sliding rod (332) which are rotatably connected to each other; One end of the first sliding rod (331) is connected to the first moving member (321), and the other end of the first sliding rod (331) is slidably connected to the second supporting plate (200); one end of the second sliding rod (332) is rotationally connected to the adjusting member (310), and the other end of the second sliding rod (332) is slidably connected to the second supporting plate (200); When the first moving member (321) moves along the third direction, the ends of the first sliding rod (331) and the second sliding rod (332) located on the same side in the second direction can approach or move away from each other.

5. The spinal fusion cage according to claim 4, characterized in that: A first limiting groove (210) and a second limiting groove (220) are respectively constructed on both sides of the second support plate (200) along the first direction; A first limiting column (3311) is protruded along the first direction on one side of the first sliding rod (331) close to the second supporting plate (200), and the first limiting column (3311) is slidably disposed in the first limiting groove (210); A second limiting column (3321) is protruded along the first direction on one side of the second sliding rod (332) close to the second supporting plate (200), and the second limiting column (3321) is slidably disposed in the second limiting groove (220).

6. The spinal fusion cage according to claim 3, characterized in that: The two first support plates (100) are respectively provided with clamping grooves (140) arranged opposite to each other along the first direction, and the two ends of the first moving member (321) along the first direction are respectively clamped in the clamping grooves (140).

7. The spinal fusion cage according to any one of claims 2 to 6, characterized in that: The adjusting member (310) is provided with a first inclined surface (311), and the first supporting plate (100) is provided with a second inclined surface (110), and the first inclined surface (311) cooperates with the second inclined surface (110) so that the first supporting plate (100) can slide relative to the adjusting member (310).

8. The spinal fusion cage according to any one of claims 2 to 6, characterized in that: The adjusting member (310) is also provided with a limiting boss (312), and the first supporting plate (100) is provided with a limiting groove (120); When the spinal fusion device is at the target position of the expanded state, the limiting boss (312) is engaged in the limiting groove (120).

9. The spinal fusion cage according to any one of claims 2 to 6, characterized in that: The adjusting member (310) is configured with a first abutting surface (315), and the first supporting plate (100) is configured with a second abutting surface (150); the first abutting surface (315) and the second abutting surface (150) are both extended along a third direction; When the spinal fusion device is at a target position in an expanded state, the first abutting surface (315) abuts against the second abutting surface (150).

10. The spinal fusion cage according to any one of claims 2 to 6, characterized in that: The spinal fusion device further comprises a third limiting column (400), one end of which is fixedly connected to the first supporting plate (100); The adjusting member (310) is configured with a third limiting groove (313), and the other end of the third limiting column (400) is slidably disposed in the third limiting groove (313); When the first support plate (100) slides relative to the adjusting member (310), the third limiting column (400) slides in the third limiting groove (313).

11. The spinal fusion cage according to any one of claims 2 to 6, characterized in that: The side wall of the first support plate (100) along the first direction is a first side wall (130), and the side wall of the second support plate (200) along the first direction is a second side wall (230); When the spinal fusion cage is in a retracted state, the first side wall (130) and the second side wall (230) located on the same side are located on different planes; When the spinal fusion cage is in the target position of the expanded state, the first side wall (130) and the second side wall (230) located on the same side are located on the same plane.

Images