Abstract: The present invention discloses a guiding element and a guiding assembly for spinal drilling operation. The guiding element is configured to be dispose at a vertebra which comprises a lamina. The guiding element comprises a main body, two connection parts, and two locating parts. The main body has two stand portions and each of the stand portion comprises a clamping part. Each of the connection parts comprises a first end and a second end. The two first ends extends away from each other. Each locating part connects to each stand portion through each connection part. Each clamping part comprises two hook portions. Each side, which is configured to be in contact against the vertebra, of the hook portions has a curvature corresponding to the surface of the lamina, so that the main body is configured to be disposed at the lamina and across the vertebra through the hook portions.

Abstract: An assistant device for percutaneous puncture is disclosed. The assistance device includes a fixing element, a first rotatable element, a supporting element and a second rotatable element. The fixing element has a first rail, and the first rotatable element is slidably disposed on the first rail. The supporting element is connected to the first rotatable element. The second rotatable element is slidably disposed on the supporting element and has a puncture restraint pore.

Abstract: An assistant device for percutaneous puncture is disclosed. The assistance device includes a fixing element, a first rotatable element, a supporting element and a second rotatable element. The fixing element has a first rail, and the first rotatable element is slidably disposed on the first rail. The supporting element is connected to the first rotatable element. The second rotatable element is slidably disposed on the supporting element and has a puncture restraint pore.

Abstract: A method for spinal drilling operation is disclosed. The method includes the steps of disposing a guiding element on a vertebra; mounting an auxiliary element on a locating part of the guiding element; mounting a k-pin on the auxiliary element; locating the k-pin and removing the auxiliary element from the locating part; mounting a cannular driller having a holding part and a drilling part through the k-pin; and rotating the holding part to drive the drilling part for a reaming process. A guiding assembly for spinal drilling operation is also disclosed. Accordingly, the spinal drilling process can be conducted easier and more precisely.

Abstract: The invention is to provide a navigating method and system for drilling operation in spinal surgery. The method and system is applied to the subjects who receive pedicle insertion operation in spinal surgery. The specific vertebras are under radiography using X-ray machine at both anterior/posterior and lateral views. These imaging are then transmitted into a computer system for image distortion correction and registration. By drawing the safety regions of the pedicle on the indicated vertebra in both AP and Lat. images, three-dimensional safety volumes of the pedicle of the vertebra are developed by intersection operation. Therefore, prior to and during the clinical spine operation, surgeons are able to safe navigation by referring the referential orientation via the developed system.

Abstract: Methods for performing spinal fusions using an injectable calcium phosphate-based bone substitute are provided. The injectable bone substitute is injected into the anterior portion of an interbody space and allowed to solidify in vivo. The injectable bone substitute has a minimum compression strength of 10 MPa after setting for about 30 minutes and preferably solidifies to a compression strength of 25 MPa within 24 hours of injection. Optionally, the posterior portion of the interbody space is fixed using a metallic implant selected from rods and pedicle screws or plates and pedicle screws by attachment thereof to adjacent vertebrae.

Abstract: An adjustable rod bending device includes a support table, a pivot base mounted on the support table, a pivot bracket pivotally mounted on the pivot base, and multiple juxtaposed rollers mounted in the pivot bracket to pivot therewith and each having an upper end adjustably mounted in the pivot bracket and a lower end formed with an arcuate pressing surface. The arcuate pressing surface of each of the rollers can be moved to press a corrective spinal rod supported by two support posts, thereby accurately bending the corrective spinal rod.

Abstract: A process is provided for producing a bioceramic composite in which an alumina based ceramic substrate is coated with an intermediate calcium pyrophosphate layer to cement a porous calcium phosphate material to the alumina based ceramic substrate. In one aspect of the invention, the porous calcium phosphate material is a porous lattice made from natural bone. A bioceramic composite which includes an alumina-based ceramic substrate, an intermediate calcium pyrophosphate layer and a porous natural bone material bonded to the intermediate calcium pyrophosphate layer is also disclosed.