Abstract: Disclosed is an angle-expandable spinal cage including an upper plate and a lower plate disposed to face each other, a frame disposed between the upper plate and the lower plate, the frame having a space formed therein, a block disposed between the upper plate and the lower plate and disposed in front of the frame, and a driving bolt having one end thereof connected to the frame and a remaining end thereof connected to the block. The angle-expandable spinal cage is implanted into an affected area while occupying the minimum angle thereof and to be expanded between vertebral bodies.

Abstract: Disclosed is an angle-expandable spinal cage including an upper plate and a lower plate disposed to face each other, a frame disposed between the upper plate and the lower plate, the frame having a space formed therein, a block disposed between the upper plate and the lower plate and disposed in front of the frame, and a driving bolt having one end thereof connected to the frame and a remaining end thereof connected to the block. The angle-expandable spinal cage is implanted into an affected area while occupying the minimum angle thereof and to be expanded between vertebral bodies.

Abstract: Disclosed is a height-expandable spinal cage including an upper plate and a lower plate disposed to face each other, a frame disposed between the upper plate and the lower plate, the frame having a space formed therein, a block disposed between the upper plate and the lower plate and configured to be movable in a longitudinal direction inside the frame, and a driving bolt having one end thereof connected to the block to move the block. The height-expandable spinal cage is implanted into an affected area while occupying the minimum height thereof and to be expanded between vertebral bodies.

Abstract: A spinal plate system that makes it possible to check the extent to which a screw for anchoring the device to a vertebra is inserted in the vertebra is proposed. The spinal plate system includes a fixing plate having a plurality of first fastening holes formed through a surface thereof, a plurality of screws, which are respectively inserted into the plurality of first fastening holes and are threadedly coupled to a vertebra, and a locking rivet, which is disposed adjacent to the plurality of fastening holes and which comes into contact with first ends of the plurality of screws so as to hold the plurality of screws, the locking rivet including an elastic portion, which is elastically deformed by the plurality of screws when the screws are inserted into the fixing plate and which is elastically restored after the screws are completely inserted to a predetermined depth.

Abstract: Provided is a structure of a porous spinal implant including a cage body inserted between adjacent vertebral bodies and divided by an upper surface, a lower surface, a left surface, a right surface, a front surface, and a rear surface, a plurality of vertical pores formed on the upper surface and the lower surface of the cage body, and a plurality of horizontal structures stacked on the left surface and the right surface of the cage body, wherein the plurality of vertical pores and the plurality of horizontal structures are each formed in a pattern that repeats in up-down, left-right, and front-rear directions. The structure of a porous spinal implant is capable of reducing strength of a cage body close to that of a vertebral body.

Abstract: Disclosed is a bone fixation screw structure, particularly a bone fixation screw structure including a receiver configured to provide a space in which a bone screw is inserted into the lower end thereof, a pair of openings formed at facing sides of the receiver and provided in an open form along a longitudinal direction of the receiver, and a pair of closures formed at remaining facing sides of the receiver and provided in a closed form along the longitudinal direction of the receiver, thereby enabling a user to easily change a closed-type receiver to an open-type receiver and thus fundamentally preventing interference with a rod or an insert component.

Abstract: Disclosed is a bone fixation screw structure, particularly a bone fixation screw structure including a receiver configured to provide a space in which a bone screw is inserted into the lower end thereof, a pair of openings formed at facing sides of the receiver and provided in an open form along a longitudinal direction of the receiver, and a pair of closures formed at remaining facing sides of the receiver and provided in a closed form along the longitudinal direction of the receiver, thereby enabling a user to easily change a closed-type receiver to an open-type receiver and thus fundamentally preventing interference with a rod or an insert component.

Abstract: Provided is a structure of a porous spinal implant including a cage body inserted between adjacent vertebral bodies and divided by an upper surface, a lower surface, a left surface, a right surface, a front surface, and a rear surface, a plurality of vertical pores formed on the upper surface and the lower surface of the cage body, and a plurality of horizontal structures stacked on the left surface and the right surface of the cage body, wherein the plurality of vertical pores and the plurality of horizontal structures are each formed in a pattern that repeats in up-down, left-right, and front-rear directions. The structure of a porous spinal implant is capable of reducing strength of a cage body close to that of a vertebral body.

Abstract: The present invention relates to a fixing rod connecting device and, more specifically, to a fixing rod connecting device, comprising: a main body having a space into which one or more rods can be inserted; and a fixing screw fastened to the main body so as to fix the rod, wherein one side surface of the main body is formed to have a predetermined upward inclination angle relative to the other side surface thereof, thereby eliminating interference with other surgical instruments when the fixing screw is fastened, enabling an incision area of a patient to be minimized, and enabling three-dimensional alignment and fixation of the rod.

Abstract: A spinal plate system that makes it possible to check the extent to which a screw for anchoring the device to a vertebra is inserted in the vertebra is proposed. The spinal plate system includes a fixing plate having a plurality of first fastening holes formed through a surface thereof, a plurality of screws, which are respectively inserted into the plurality of first fastening holes and are threadedly coupled to a vertebra, and a locking rivet, which is disposed adjacent to the plurality of fastening holes and which comes into contact with first ends of the plurality of screws so as to hold the plurality of screws, the locking rivet including an elastic portion, which is elastically deformed by the plurality of screws when the screws are inserted into the fixing plate and which is elastically restored after the screws are completely inserted to a predetermined depth.

Abstract: The present invention relates to a fixing rod connecting device and, more specifically, to a fixing rod connecting device, comprising: a main body having a space into which one or more rods can be inserted; and a fixing screw fastened to the main body so as to fix the rod, wherein one side surface of the main body is formed to have a predetermined upward inclination angle relative to the other side surface thereof, thereby eliminating interference with other surgical instruments when the fixing screw is fastened, enabling an incision area of a patient to be minimized, and enabling three-dimensional alignment and fixation of the rod.