Abstract: A sensing bone fixing element includes a fixing portion, a fastening portion, a capacitor structure, and a coil. The fastening portion is fixed to the fixing portion and suitable for being fastened to a bone. The fastening portion passes through the capacitor structure which has a capacitance value and includes a first conductive layer, a second conductive layer, and an elastic dielectric layer. The first conductive layer leans against the fixing portion, the second conductive layer leans against the bone, and the elastic dielectric layer is located between the first conductive layer and the second conductive layer. The coil has an inductance value, and two ends of the coil are respectively connected to the first conductive layer and the second conductive layer. The coil receives a detection radio frequency (RF) signal and generates a responding RF signal according to variations in the capacitance value and the inductance value.

Abstract: The present invention discloses a two-stage locating device and the method thereof. In stage-one, the preliminary locating device finds the approximate area of the locking hole encircled with the magnetic material on the intramedullary nail. In stage-two, the pinpoint device has a plurality of targeting devices and includes a transparent plate with a plurality of alignment lines. According to the deviations between each pointing device and the alignment lines, the direction of the pinpoint device for further adjustment can be determined. The present invention can determine the position and the orientation of the locking hole on the intramedullary nail quickly and precisely to shorten the time spent to implant the intramedullary nail. Furthermore, the present invention can also have a conductive circuit to connect to an alarm device. Thus, the precise location can be determined through the different alarm signals based on the contact conditions between each directing devices and the conductive circuit.

Abstract: A sensing bone fixing element includes a fixing portion, a fastening portion, a capacitor structure, and a coil. The fastening portion is fixed to the fixing portion and suitable for being fastened to a bone. The fastening portion passes through the capacitor structure which has a capacitance value and includes a first conductive layer, a second conductive layer, and an elastic dielectric layer. The first conductive layer leans against the fixing portion, the second conductive layer leans against the bone, and the elastic dielectric layer is located between the first conductive layer and the second conductive layer. The coil has an inductance value, and two ends of the coil are respectively connected to the first conductive layer and the second conductive layer. The coil receives a detection radio frequency (RF) signal and generates a responding RF signal according to variations in the capacitance value and the inductance value.

Abstract: The present invention discloses a two-stage locating device and the method thereof. In stage-one, the preliminary locating device finds the approximate area of the locking hole encircled with the magnetic material on the intramedullary nail. In stage-two, the pinpoint device has a plurality of targeting devices and includes a transparent plate with a plurality of alignment lines. According to the deviations between each pointing device and the alignment lines, the direction of the pinpoint device for further adjustment can be determined. The present invention can determine the position and the orientation of the locking hole on the intramedullary nail quickly and precisely to shorten the time spent to implant the intramedullary nail. Furthermore, the present invention can also have a conductive circuit to connect to an alarm device. Thus, the precise location can be determined through the different alarm signals based on the contact conditions between each directing devices and the conductive circuit.

Abstract: A tibia component of a knee arthroplasty to be connected to a tibia includes a first tibia connecting structure and a second tibia connecting structure. The first tibia connecting structure can be inserted into a radial groove on the tibia along a radial direction of the tibia to limit the motion of the tibia component in the axial direction of the tibia. The second tibia connecting structure can be inserted into an axial groove on the tibia along the axial direction of the tibia to limit the motion of the tibia component in the radial direction of the tibia. The first and the second connecting structures provide the radial and axial bonding force to the tibia and the knee arthroplasty, so that the amount of bone cement used can be reduced and may beneficial to revision knee arthroplasty operation.

Abstract: An enhanced spine fixation apparatus for fixing a number of vertebrae of a spine column is disclosed. The spine fixation apparatus comprises a plurality of pedicel screws, a plurality of coupling blocks, a plurality of first securing elements, a plurality of second securing elements, a connecting rod, and a plurality of third securing elements. Each coupling block is secured on a pedicel screw by the first securing element while the connecting rod is secured on the coupling block by the second securing element. Each first securing element is fixed by the third securing element. By virtue of the provisions of a first and a second spherical convex surfaces as well as a first and a second recesses respectively on the surfaces of the pedicel screw and the first securing element as well as the surfaces of the coupling block which are being abutted, an adjustment concerning a vertical tilt angle and a horizontal rotating angle of the coupling block relative to the pedicel screw is available.

Abstract: An anterior spinal fixation system comprises a pair of equal upper and lower vertebral plate systems and at least two rods arranged in parallel. The upper and lower vertebral plate systems each includes a staple vertebral plate and a universal cover plate which are jointed firmly with each other to retain the ends of the rods. Furthermore, the anterior spinal fixation system of the present invention may also comprise at least one connector plate system retain in the middle of the rods so as to enhance supporting strength and effect of anti-twist.

Abstract: A load sensor inserted between two bones for sensing a stress exerted on the load sensor includes a body, and a load transducer mounted in the body for transducing a strain thereof resulting from the stress into an electronic signal. Such load sensor can detect a stress exerted on a bone graft bone and/or the interaction of the bone graft and spine implant to improve curative effects and increase the successful rate of a bone graft operation.