Abstract: Proposed is a pet exercise apparatus including a rotary body which is formed in an erected cylindrical shape, has at least one open side surface, and is disposed to be rotatable, so as to stimulate a pet's curiosity and induce spontaneous exercise thereof without harming the pet's emotions or health. The rotary body includes a tube and a movable ball. The tube has a transparent tubular shape, is partially filled with liquid, and is disposed along the inner circumference thereof. The movable ball is positioned near the surface of the liquid filling the tube. The rotary body rotates according to the movement of the pet who chases after the movable ball, so that the position of the movable ball is changed by a change in the position of the surface of the liquid so as to continuously stimulate the pet's curiosity.

Abstract: Proposed is a pet exercise apparatus including a rotary body which is formed in an erected cylindrical shape, has at least one open side surface, and is disposed to be rotatable, so as to stimulate a pet's curiosity and induce spontaneous exercise thereof without harming the pet's emotions or health. The rotary body includes a tube and a movable ball. The tube has a transparent tubular shape, is partially filled with liquid, and is disposed along the inner circumference thereof. The movable ball is positioned near the surface of the liquid filling the tube. The rotary body rotates according to the movement of the pet who chases after the movable ball, so that the position of the movable ball is changed by a change in the position of the surface of the liquid so as to continuously stimulate the pet's curiosity.

Abstract: The present invention relates to a cage assembly for spinal interbody fusion comprising: a main body which is inserted between a vertebral body of a spine from which a disc is removed, and a neighboring vertebral body; a first screw part which is formed on the upper surface of the main body, and which has a spiral shape formed along a first direction heading outward from the center; a second screw part which is formed on the lower surface of the main body, and which has a spiral shape formed along a second direction heading outward from the center; and a space part which is formed to penetrate the upper surface and the lower surface of the main body, and which enables the bones forming the vertebral body and the neighboring vertebral body to fuse together. The purpose of the present invention is to promote the smooth progress of surgery for the bone fusion of two neighboring vertebral bodies, or more than two vertebral bodies, forming the spine.

Abstract: The present invention relates to a cage assembly for spinal interbody fusion comprising: a main body which is inserted between a vertebral body of a spine from which a disc is removed, and a neighboring vertebral body; a first screw part which is formed on the upper surface of the main body, and which has a spiral shape formed along a first direction heading outward from the center; a second screw part which is formed on the lower surface of the main body, and which has a spiral shape formed along a second direction heading outward from the center; and a space part which is formed to penetrate the upper surface and the lower surface of the main body, and which enables the bones forming the vertebral body and the neighboring vertebral body to fuse together. The purpose of the present invention is to promote the smooth progress of surgery for the bone fusion of two neighboring vertebral bodies, or more than two vertebral bodies, forming the spine.