TWM444157U - Interface stabilising device for facies articularis of centrum - Google Patents

Description

Vertebral facet joint interface stabilization device

The present invention relates to a vertebral facet joint interface stabilization device, in particular to a flap which can be inserted into the gap of a facet joint between human vertebrae and the facet joint of the vertebral body. Squeezing and fixing the vertebral facet joint interface stabilization device.

In the past treatment of spinal disorders, if it is necessary to fuse the upper and lower adjacent two vertebrae into one body, the traditional method is to insert the pedicle screws into the vertebral bodies respectively, and lock them with bone nails, connecting rods, etc. Combined, the upper and lower vertebrae skeletal connections are stably fixed by rods and nails.

Or after implanting an intervertebral filling block to the position of the intervertebral disc, the vertebral bone tissue of the upper and lower vertebral bodies is gradually grown into the vertebral bone tissue of the scraping part and stimulated by the filling block contact In the filling block, when the filling block is combined and integrated, and the upper and lower vertebral bodies are stably stabilized, it is recommended to make a fusion stabilization on the facet joints behind the vertebral bodies.

However, the above-mentioned conventional spinal vertebral body fusion is stable to solve the problem of the patient's back spine, and it is necessary to implant a complex, multi-part and other component structure body to the patient's vertebrae to eliminate the problem. Or need a large incision, deep surgery, directly cut the back position, close To the vertebral body to implant the pedicle screw or intervertebral pad. As a result, these current methods increase the number of movement requirements, precautions, and risks in the surgical procedures and incision area of the physician, but the benefits of solving the spinal pain problem for the patient are not relatively improved, so complicated procedures or components. Etc., there is a need for its review improvement.

Therefore, in the need to stabilize the adjacent two vertebrae fusion, and can be simple, effective or small wound surgery, the problem of stable spinal fusion needs can be solved, and the characteristics of simple operation, uncomplicated difficulty and low risk are provided. There is a new patent for the vertebral facet joint interface stabilization device of this case.

Therefore, a simple solution to these problems is to use a sheet that can be implanted into the gap of a facet of a human vertebra, with one or more protrusions on the side, which can be placed in the gap. The middle card is tightly fixed, and the device fills the gap and fixes it tightly, so that the adjacent vertebra body can be fused and stabilized by the device due to the small joint surface, thereby solving the problem of spinal instability. Vertebral facet joint interface stabilization device.

Therefore, one of the objects of the present invention is to provide a vertebral facet joint interface stabilization device.

Another object of the present invention is to provide a device in which a device can be implanted and fixed in a gap of a facet joint of a vertebral body to stabilize the position between the vertebral bodies and to borrow the upper and lower vertebral bodies. From the fusion of the facet joints A vertebral facet joint interface stabilization device that is integrated to stabilize the problem of spinal instability in patients.

Another object of the present invention is to provide a vertebral facet joint interface stabilization device that is fixed on the side of the facet joint surface by providing a plurality of protrusions, chamfers, and the like on the side of the device.

A further object of the present invention is to provide a vertebral facet joint interface stabilization device that can be divided into a central portion and a side portion, and can be combined and fused in a manner that is stable in the gap.

A new object of the present invention is to provide a vertebral facet joint interface stabilization device in which the device can be filled with a bone substitute or can be a smooth surface for the vertebral body to slide.

Therefore, the novel vertebral facet joint interface stabilization device; The device is characterized in that: the device is a body, and one or more protrusions are protruded on two sides, and the device is inserted with a long side corresponding to a gap of a facet joint surface of the vertebral body, and the two sides of the facet joint are squeezed to be fixed. The protrusions are used to secure the device to the joint gap.

The vertebral facet joint interface stabilization device, wherein the device is provided with a plurality of perforations.

The vertebral facet joint interface stabilization device, wherein the device is a non-linear sheet having a plurality of corners and turns.

The vertebral facet joint interface stabilization device, wherein the device is bent at both ends Fold at an angle to the device.

The vertebral facet joint interface stabilization device, wherein the bending of the two ends of the device is in a T-shaped extension in contact with the device.

The vertebral facet joint interface stabilization device, wherein the device has a central portion and two side portions, the central portion is provided with a screw hole, and the outer surface is convex with one or more protrusions, and the device is squeezed on the small portion Fixed in the joint surface gap.

The vertebral facet joint interface stabilization device, wherein a screw hole in a central portion of the device can further lock a spanning nail and bridge the vertebral body on both sides of the facet joint space, the facet joint and the device fixed.

The vertebral facet joint interface stabilization device, wherein a central portion of the device is separated from the side portions, and after the central portion is inserted into the facet joint space, the side portions can be reinserted into the two sides of the central portion The facet joint gap, and the center portion is locked.

The vertebral facet joint interface stabilization device, wherein the central portion of the device is in contact with the side portions with a central axis, and after the device is implanted into the facet joint space, the central portion can be pivoted, and The protrusion on the central portion is turned out to engage the vertebral body on both sides of the gap.

The vertebral facet joint interface stabilization device, wherein the device has a large perforation at a central portion thereof, which can be filled into a bone substitute.

The vertebral facet joint interface stabilization device, wherein one side of the device is a smooth surface, which can provide a certain degree of contact with the facet joint surface of the vertebral body It has slidability and a large protrusion on the other side to prevent the device from turning and rotating.

In order to further illustrate the present invention, the embodiments are described with reference to the drawings in a preferred embodiment as follows:

In Fig. 1 and Fig. 2, the vertebral facet joint interface stabilization device 10 of the present invention is a substantially quadrangular piece 11 having a blade shape 111 at one end for easy insertion into a top 20 In the gap of the facet joint 22 of the 21 adjacent vertebral bodies, the other end is provided with a screw hole 112, which can be used for screwing control direction of an implanting tool (not shown), and can be screwed into A set screw 12 (see Figure 4).

A plurality of pointed protrusions 115 are convexly disposed on the two side faces 113 and 114 of the device 11, and the occlusal fixation can be enhanced when the device 11 is inserted into the gap of the vertebral facet joint surface 22. And the device 11 is provided with a plurality of perforations 116 so that the vertebral bodies 20, 21 can grow into bone cells, and the upper and lower vertebral bodies 20, 21 are fused together to form a stable structure.

In Fig. 3, the vertebral facet joint interface stabilization device 10 has various embodiments. One of the devices 30 is a non-linear sheet having a plurality of corner bends 31. Thus, the position and distance drop formed by the angle bends 31 can be inserted into the gap of the facet joint surface 22 of the vertebral body. In the middle, increase the tightness of the combination. And the non-linear sheet may also be provided with such A pointed protrusion 115 and a perforation 116 (shown in FIG. 2) are used to strengthen the fixation and allow the bone cells to grow in, and the vertebral bodies 20, 21 are fused.

Another embodiment of the vertebral facet joint interface stabilization device 10, wherein the two ends of the device 40 are bent at an angle with the device 40, and the pointed protrusions form a continuous strip. The protrusions 42 and the bends 41 at both ends of the device 40 are in a T-shaped extension configuration in contact with the device 40, and both can increase the tightness inserted into the gap of the facet joint surface 22 of the vertebral body.

In FIG. 4, the vertebral facet joint interface stabilization device 10, wherein the screw hole 112 of the device 11 is further locked with a spanning screw 50, the spanning nail 50 is inserted into the device 11 After being in the gap of the facet joint surface 22 of the vertebral body, the upper and lower vertebral bodies 20, 21 are further joined and fixed by being bridged at both ends of the articular surface gap 22 of the upper and lower vertebral bodies 20, 21 (as shown in Fig. 7).

In Fig. 5, the vertebral facet joint interface stabilization device 10, in another embodiment, divides the device 60 into a central portion 61, and a separate left and right connected two side portions 62, the central portion 61 being compared with The side portion 62 has a thickness that can be fixed to the joint surface gap 22, and after the central portion 61 is inserted into the joint surface gap 22, the side portions 62 can be reinserted into the center portion 61. The joint surface gap 22 is locked with the center portion 61, and the center portion 61 is assisted to fix the insertion position.

In the embodiment of the vertebral facet joint interface stabilization device 10, the central portion 71 of the device 70 and the side portions 72 are centered on the central axis. The center portion 71 is pivotally provided with a plurality of pointed protrusions 711, and the side portions 72 are also provided with grooves 721 for receiving the protrusions 711. After the device 70 is inserted into the gap 22 of the facet joint surface of the vertebral body, the central portion 71 is rotatable relative to the axis, and the protrusion 711 on the central portion 71 is rotated out of the upper and lower sides of the gap 22. The vertebral bodies are between 20 and 21.

In Fig. 7, the vertebral facet joint interface stabilization device 10, wherein the device 11 can be used in pairs (the same embodiment or different embodiments), and the joints inserted on the left and right sides of the upper and lower vertebral bodies 20, 21 In the face gap 22, the two sides of the vertebral bodies 20, 21 are simultaneously fused and stabilized. However, it can also be implanted in the single side gap 22 of the vertebral bodies 20, 21, and the other side of the vertebral bodies 20, 21 can be fixed by implanting a conventional pedicle screw (not shown) ). Or a spinous process opening stabilization device 80 may be implanted between the spinous processes 201, 211 of the vertebral bodies 20, 21, and the vertebral facet joint interface stabilization device 10 is coupled to the upper and lower vertebral bodies 20, 21 fusion is stable.

In the embodiment of the vertebral facet joint interface stabilization device 10, the device 90 is an approximately quadrilateral piece 901 having a blade 902 at one end for facilitating insertion of the facet joints of the adjacent vertebral bodies. In the gap of the facet joint, the other end is provided with a screw hole 903 for use in a screwing control direction of an implanting tool (not shown), and a fixing screw 12 can be screwed into it (Fig. 4).

A plurality of pointed protrusions are convexly disposed on the two side surfaces 904 and 905 of the device 90. From 906, the occlusal fixation can be enhanced when the device 90 is inserted into the facet joint space of the vertebral bodies. And the device 90 is provided with a plurality of perforations 907 so that the bone cells of the vertebral bodies can grow in, so that the vertebral bodies are integrated into one body to form a stable structure.

In the embodiment of the vertebral facet joint interface stabilization device 10, the central portion 911 of the device 91 and the side portions 912 are connected to each other at a center, and are provided with a plurality of pointed protrusions. 913, and a through hole 914 is provided for an insertion tool (not shown) for screwing control direction, and a fixing screw 12 can be screwed into (see FIG. 4).

And the device 91 is provided with a plurality of perforations 915 so that the bone cells of the vertebral bodies can grow in, and the large perforations 916 can be filled with bone substitutes, so that the device 91 is integrated with the vertebral bodies to form a body. A stable structure.

In the embodiment of the vertebral facet joint interface stabilization device 10, the device 92 has two sides 921, 922, wherein the side surface 921 (not shown) is a smooth surface that can be implanted into After a gap in the facet joint of the adjacent vertebral bodies, a degree of slidability of the facet joint of the vertebral body in contact therewith is provided, which is a non-perfect fixation contact.

The side surface 922 is provided with a plurality of pointed protrusions 923, which can strengthen the occlusion when the device 92 is inserted into the vertebral facet joint space. And the device 92 is further provided with a mountain-like shape like a bottom of the ship. The large projection 924 provides the device 92 with a fixed force that is stable and does not flip and rotate. The device 92 can be implanted into the vertebral body with a set screw 925 to secure the device 92.

10‧‧‧Vertebral facet joint interface stabilization device

11‧‧‧ device

12‧‧‧ fixing screws

111‧‧‧Knife edge

112‧‧‧ screw holes

113‧‧‧ side

114‧‧‧ side

115‧‧‧ bumps

116‧‧‧Perforation

20‧‧‧ vertebral body

21‧‧‧ vertebral body

22‧‧‧Small facet joint space

201‧‧‧ spines

211‧‧‧ spines

30‧‧‧ device

31‧‧‧ Corner twists and turns

40‧‧‧ device

41‧‧‧Bend at both ends

42‧‧‧ strip bulges

50‧‧‧cross nails

60‧‧‧ device

61‧‧‧ Central Department

62‧‧‧ side

70‧‧‧ device

71‧‧‧ Central Department

72‧‧‧ side

73‧‧‧ center axis

711‧‧‧ bumps

721‧‧‧ Groove

80‧‧‧ Spinous process expansion device

90‧‧‧ device

901‧‧‧Piece

902‧‧‧Knife edge

903‧‧‧ screw holes

904‧‧‧ side

905‧‧‧ side

906‧‧‧ bumps

907‧‧‧Perforation

91‧‧‧ device

911‧‧‧ Central Department

912‧‧‧ side

913‧‧‧ bumps

914‧‧‧ screw hole

915‧‧‧Perforation

916‧‧‧ large perforation

92‧‧‧ device

921‧‧‧ smooth surface

922‧‧‧ side

923‧‧‧ bumps

924‧‧‧ large bump

925‧‧‧ screws

Fig. 1 is a schematic view showing a preferred embodiment of a novel vertebral facet joint interface stabilization device. (Figure 1 is a representative figure)

Fig. 2 is a schematic view showing the position of the vertebral facet joint interface stabilization device inserted into the upper and lower vertebral articular surface gaps.

Fig. 3 is a schematic view showing two other preferred examples of the vertebral facet joint interface stabilization device.

Fig. 4 is a schematic view showing another preferred embodiment of the vertebral facet joint interface stabilization device combined with a spanning nail.

Fig. 5 is a schematic view showing a specific example of separation of a central portion and left and right side portions of the vertebral facet joint interface stabilization device.

Fig. 6 is a schematic view showing a specific example of a central portion and a side portion of the vertebral facet joint interface stabilization device.

Fig. 7 is a schematic view showing a specific example of the vertebral facet joint interface stabilization device combined with a spinous process opening stabilization device mounted on the vertebral bodies.

8a, 8b, and 8c are schematic views showing three other preferred examples of the vertebral facet joint interface stabilization device.

10‧‧‧Vertebral facet joint interface stabilization device

11‧‧‧ device

111‧‧‧Knife edge

112‧‧‧ screw holes

113‧‧‧ side

114‧‧‧ side

115‧‧‧ bumps

Claims (7)

A vertebral facet joint interface stabilization device; the device is a piece body, and one or more protrusions are protruded on two sides, and the device is inserted with a long side corresponding to a gap of a facet joint surface of the vertebral body, and the device is squeezed The vertebral bodies on both sides of the facet joint are fixed, and the protrusions fix the device to the joint gap; the device has a central portion and two side portions, and a screw hole is arranged at one end of the central portion, and One or more protrusions are protruded from the surface, the center portion and the side portion of the device are fixed in the gap of the facet joint surface; and the gap of the facet joint surface on the other side of the vertebral body must be inserted into another facet joint of the vertebral body The surface interface stabilizing device fixes the vertebral bodies on both sides of the other side of the facet joint surface, so that the small articular surface gaps on the left and right sides of the vertebral bodies are all fixed. The vertebral facet joint interface stabilization device of claim 1, wherein the device is provided with a plurality of perforations. The vertebral facet joint interface stabilization device according to claim 1, wherein the central portion of the device has a screw hole for further locking a spanning nail and spanning the vertebral body on both sides of the facet joint space. The facet joint is fixed to the device. The vertebral facet joint interface stabilization device according to the first aspect of the invention, wherein the central portion of the device is separated from the side portions, the central portion After insertion into the facet joint space, the sides can be reinserted into the facet joint gap on both sides of the center portion and locked with the center portion. The vertebral facet joint interface stabilization device according to the first aspect of the invention, wherein the central portion of the device is connected to the side portions with a central axis, and the device is implanted into the facet joint space. The central portion is pivotable and the projection on the central portion is pivoted out of the vertebral body on both sides of the gap. The vertebral facet joint interface stabilization device according to the first aspect of the invention, wherein the central portion of the device and the side portions are connected to each other by a center, and a large perforation is provided for filling the bone substitute. The device is integrated with the growth of the vertebral bodies. The vertebral facet joint interface stabilization device according to claim 1, wherein one side of the device is a smooth surface, which can provide a certain degree of slidability of the vertebral facet joint surface in contact with the vertebral body, and A large projection is provided to allow the device to be flipped, rotated, and fixed in the vertebral body with a set screw.