1. Small incision without the need for extra expansion.

Ultra-thin nail wall to reduce the diameter of extension sleeve.
Semi-open sleeve to shorten perimeter and reduce skin tension.
Rod insertion, compression and distraction are all operated in vitro, without the need for extra expansion.

2. Simple approach to both compression and distraction in vitro.

Insert the rod without additional tools by original threaded docking technology.
Well-designed compression and distraction tools make it possbile to realize all operations in vitro.
The sleeve has both strength and toughness to realize external resistance and locking operation.
The right self-holding shrapnel design ensures that the screw connection is firm and easy to unlock.

3. Semi-open elastic arm to avoid interference.

Semi-open integrated design makes it easy to install and disassemble.
The extension sleeves are allowed to cross each other, and all can be easily operated in the lower lumbar spine.
Half-opening can adjust the direction of the opening freely, which makes the rod insertion flexible under direct viewing according to the habit, and reduces the complexity of operation.
The semi-open design provides better visibility, and the rod insertion process can be observed through the tube wall.

4. Ultra-low profile screw for superior performance.

Innovative structural design and strict verification bring superior mechanical performance.
The use of new Buttress Thread structure greatly reduces the size of the screw, and brings the ultimate surgery experience.
Without the need to break the blade, variable angle short-tail screw has no burr on the fracture, and the appearance is smooth and round.
The variable angle of pedicle screw sagital section increases, and there is no need to overbend the rod when the lumbosacral curvature is large.