Abstract: The present disclosure discloses a limb bone fixation system capable of automatically transforming from AO (Association for Study of Internal Fixation) to BO (Bio-logical Osteosynthesis) elastic fixation. The system includes a bone nail, a bone bridge, and connecting pieces attached to the bone bridge. The bone bridge is divided into a plate-shaped bone bridge and a rod-shaped bone bridge. A gasket made of a rigid degradable biomaterial is added between all connecting pieces at a broken end of one side of a fracture and the bone bridge, which can form rigid fixation for the fracture at initial fixation.

Abstract: A pedicle screw-rod system capable of gradually changing from rigid fixation to non-rigid fixation is provided. The system includes a pedicle screw, a connecting rod, and a screw plug. The connecting rod is used for connecting in series the pedicle screw fixed to adjacent vertebrae on the same side of a spine, and the screw plug is used for locking the connecting rod on the pedicle screw intersecting therewith. At least one of two structural members of the pedicle screw or the connecting rod is connected by a flexible connecting part, and the flexible connecting part is also connected to degradable stoppers for preventing flexible parts from swinging with each other; and with gradual degradation of the degradable stoppers, a fixation manner of the pedicle screw-rod system will be gradually converted from initial rigid fixation into non-rigid fixation.

Abstract: The present disclosure comprises a ball head, a neck part, a cover body, and a fastener, wherein the cover body is in a shape of a thin-walled cup, including a cup buckled and embedded on the femoral neck left after the femoral head is removed and a circle of skirt plates attached to the lower edge of the cup to extend the covering range of the cup to the femoral neck and the intertrochanteric femur; a through hole for a cable to penetrating through is formed in the tail end of each skirt plate, and a limiting clip for limiting the cable for cerclage of the cup is arranged outside the skirt plate; and then stable rigid connection is conducted using a compression ring; and the fastener comprises a screw or an additional perforated steel plate and a cable which is fixed in a cerclage and tension manner.

Abstract: A pedicle screw-rod system capable of gradually changing from rigid fixation to non-rigid fixation is provided. The system includes a pedicle screw, a connecting rod, and a screw plug. The connecting rod is used for connecting in series the pedicle screw fixed to adjacent vertebrae on the same side of a spine, and the screw plug is used for locking the connecting rod on the pedicle screw intersecting therewith. At least one of two structural members of the pedicle screw or the connecting rod is connected by a flexible connecting part, and the flexible connecting part is also connected to degradable stoppers for preventing flexible parts from swinging with each other; and with gradual degradation of the degradable stoppers, a fixation manner of the pedicle screw-rod system will be gradually converted from initial rigid fixation into non-rigid fixation.

Abstract: The present disclosure discloses a limb bone fixation system capable of automatically transforming from AO (Association for Study of Internal Fixation) to BO (Bio-logical Osteosynthesis) elastic fixation. The system includes a bone nail, a bone bridge, and connecting pieces attached to the bone bridge. The bone bridge is divided into a plate-shaped bone bridge and a rod-shaped bone bridge. A gasket made of a rigid degradable biomaterial is added between all connecting pieces at a broken end of one side of a fracture and the bone bridge, which can form rigid fixation for the fracture at initial fixation.

Abstract: There is provided a pedicle screw assembly for dynamic and static fixation, which is able to be assembled during the operation and allows a doctor to make an emergency choice between fusion fixation and non-fusion fixation. The pedicle screw assembly is used for inner fixation in spine surgery. During the operation, a pedicle screw is firstly implanted in a pedicle, and then a spherical head of the pedicle screw is enclosed by a connecting claw. After a screw seat is connected to the connecting claw by means of threads, a connecting rod is inserted in a groove and finally a locking screw is tightened to complete the fixation.

Abstract: There is provided a pedicle screw assembly for dynamic and static fixation, which is able to be assembled during the operation and allows a doctor to make an emergency choice between fusion fixation and non-fusion fixation. The pedicle screw assembly is used for inner fixation in spine surgery. During the operation, a pedicle screw is firstly implanted in a pedicle, and then a spherical head of the pedicle screw is enclosed by a connecting claw. After a screw seat is connected to the connecting claw by means of threads, a connecting rod is inserted in a groove and finally a locking screw is tightened to complete the fixation.

Abstract: Disclosed are a corer and a method using same. The corer includes a connecting sleeve, a power lever connected to the connecting sleeve, a hook cylinder having an upper end inserted into the connecting sleeve, and a cutting hook connected to a side of the hook cylinder. A full-length opening is vertically formed on a side wall of the hook cylinder. The upper end of the hook cylinder is detachably connected to the connecting sleeve. An arc slot perpendicular to the full-length opening is provided on a side of a lower end of the hook cylinder. The corer solves the problem that the existing corer is unable to extract an intact core because it is unable to transect a core base during non-penetrating coring.

Abstract: Disclosed are a corer and a method using same. The corer includes a connecting sleeve, a power lever connected to the connecting sleeve, a hook cylinder having an upper end inserted into the connecting sleeve, and a cutting hook connected to a side of the hook cylinder. A full-length opening is vertically formed on a side wall of the hook cylinder. The upper end of the hook cylinder is detachably connected to the connecting sleeve. An arc slot perpendicular to the full-length opening is provided on a side of a lower end of the hook cylinder. The corer solves the problem that the existing corer is unable to extract an intact core because it is unable to transect a core base during non-penetrating coring.