| abstract |
According to a scheme of the present invention, provide a kind of pedicle of vertebral arch anchoring apparatus (41).Pedicle of vertebral arch anchoring apparatus is arranged to be used as pedicle screw, namely its roughly from direction, back (but roughly with sagittal plane at angle, slight inwardly this sagittal plane) be implanted in vertebra by pedicle of vertebral arch, thus the distal part of anchoring apparatus stretches in vertebra vertebral body.Pedicle of vertebral arch anchoring apparatus comprises the pedicle of vertebral arch anchoring implement body with head, bar portion, vertical hole, and vertical hole extends from the proximal end of pedicle of vertebral arch anchoring implement body and has one or more perforate, and the one or more perforate is outside from vertical hole, such as radially outward.In addition, pedicle of vertebral arch anchoring apparatus comprises the liquefiable element that can be embedded into or be embedded in vertical hole, liquefiable element can liquefy at least partly under the impact of the energy proximally imported, thus makes the multiple perforates of material (22) through being positioned at wall portion of having liquefied flow out this vertical hole to enter sclerous tissues and/or hard tissue substituting material structure.Whereby, after liquefiable (preferably thermoplastic) material solidification, realize form fit connecting-type anchoring in sclerous tissues and/or hard tissue substituting material. |