Epistropheus internal fixing device for vertebral artery variation
A fixation device and vertebral artery technology, applied in internal fixers, fixators, internal bone synthesis, etc., can solve problems such as difficulty in pedicle screw implantation, avoid surgical risks, avoid implantation, and solve problems in mechanical properties. The effect of the defect
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Embodiment 1
[0033] Such as figure 1 and as figure 2 As shown, the present invention provides an axis internal fixation device for vertebral artery variation. When the vertebral artery foramen on one side of the patient's axis 6 varies, only the fixer 2 is allowed to be placed on the side where the vertebral artery of the axis 6 does not vary. , the lamina on the variation side of the vertebral artery of axis 6 is connected with a support part 1, and the support part 1 is fixedly connected with the axis 6 through the fixer 2 implanted in the interlaminar direction on the opposite side of the axis 6, and the fixer 2 avoids Variation of the vertebral artery, to avoid damage to the vertebral artery. In this embodiment, the fixing member 2 is an interlaminar screw.
[0034] The fixing part 2 is connected with the lamina cortex of the axis vertebrae 6, and the supporting part 1 is fixedly connected with the axis vertebrae 6 through screws 11.
[0035] Such as figure 1 As shown, three screw...
Embodiment 2
[0043] Such as Figure 4 As shown, in this embodiment, when the lamina vertebral arteries on both sides of the patient’s axis have variation, and the lamina on both sides of the axis cannot be fixed with ordinary pedicle screws, the vertebrae on both sides of the axis can be fixed. The board uses internal fixation devices.
[0044] The vertebral plates on both sides of the axis vertebra 6 are connected with a support part 1, and one end of the support part 1 close to the spinous process of the axis vertebra is fixedly connected with the axis vertebra 6 through the fixing part 2 implanted in the direction of the opposite side vertebral plate, and the fixing part 2 avoids The variant vertebral artery is opened to avoid damage to the vertebral artery. The fixation part 2 is a cancellous bone screw with a length of 20-30 mm.
[0045] Such as Figure 4 As shown, a first fixing part 31 is connected on the supporting part 1, and a third fixing part 33 and a fourth fixing part 34 ar...
Embodiment 3
[0059] This embodiment is used to apply the fixation device to the occipital bone and the axial spine, when the atlantoaxial spine fixation operation cannot be performed, and in other cases, the surgeon needs to perform the occipital-cervical fixation operation including the occipital bone. However, due to the variation of the vertebral artery, the common axis pedicle screw fixation cannot be implemented. At this time, this fixation device should be used instead of the conventional axis pedicle screw for surgery.
[0060] Such as Figure 5 As shown, the support part 1 is connected to the vertebral plate on one side of the axis vertebra 6, and the support part 1 is fixedly connected to the axis vertebra 6 through the fixing part 2 implanted in the direction of the other side vertebral plate of the axis vertebra 6, and the fixing part 2 avoids Variation of the vertebral artery, to avoid damage to the vertebral artery. A first fixing part 31 is connected to the supporting part 1...
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Abstract
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Application Information
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