The system consists of screws, rods, set screws, cross connectors, lateral connectors, connectors, and bone hooks. The pedicle screw features a coaxial cannulated design along the central axis of the screw body, enabling minimally invasive percutaneous pedicle screw internal fixation technology. This design offers advantages including reduced surgical blood loss, minimized muscle and soft tissue dissection, decreased postoperative pain, faster recovery, smaller incisions and scars, and shorter hospital stays. It maintains the benefits of satisfactory reduction and strong fixation from internal fixation procedures, allowing patients early ambulation to facilitate rehabilitation and quicker return to work.
Spinal minimally invasive surgery is characterized by precise manipulation, minimal tissue damage, rapid recovery, and small surgical trauma.
Compatible with surgical navigation robotic systems.
The primary function of this product is to restore vertebral anatomy and physiological curvature while bearing partial or full physiological loads in patients with spinal conditions such as vertebral fractures, lumbar disc herniation, lumbar spinal stenosis, and spondylolisthesis. Specifically, through a posterior surgical approach, pedicle screws are implanted into the vertebral bodies via the pedicles of the thoracolumbar vertebrae. Manipulation of the pedicle screws enables distraction, compression, lifting, and reduction of the vertebrae, thereby restoring vertebral anatomical position and spinal physiological curvature. The rod is passed subcutaneously into the U-shaped slot of the pedicle screws using specialized rod insertion instruments and secured with set screws, connecting and fixing the rod to the pedicle screws. This creates a stable structure that partially or fully bears the biological loads at the affected spinal segment, providing a stable biomechanical environment for thoracolumbar spinal fusion and fixation.
The system is manufactured from titanium alloy (TC4 ELI), cobalt-chromium-molybdenum alloy (Co28Cr6Mo), and commercially pure titanium (TA2G) materials.
Pedicle Screw
The pedicle, being the strongest bony structure connecting the vertebral body and lamina, serves as the foundation for modern internal fixation according to Denis' three-column theory. Pedicle screw fixation technology stabilizes all three spinal columns (anterior, middle, and posterior), fixes the intervertebral disc and bilateral facet joints (three mobile segments), and provides three-dimensional correction and rigid internal fixation through distraction and compression mechanisms between the pedicle screws and longitudinal connecting rods in short-segment fixation devices. This restores normal vertebral alignment while maximizing preservation of mobile spinal segments. Pedicle screw fixation technology has been widely applied in treating spinal fracture-dislocations, spinal deformities, lumbar spondylolisthesis, and spinal instability.
Spinal Rod
The rod serves as the bridge for connecting and transmitting spinal loads, representing a crucial component of the spinal internal fixation system. Titanium alloy rods offer relatively high stiffness, better maintenance of sagittal and coronal plane biomechanical performance, minimal shape memory with reduced springback after contouring (suitable for maintaining physiological curvature), and excellent biocompatibility while ensuring fixation strength.
Set Screws
The system provides standard set screws, break-off set screws, and reduction set screws. The break-off mechanism of the break-off and reduction set screws ensures consistent locking force, eliminating the risk of variable locking force due to manual operation.
Pedicle Screw Types
Pedicle screws consist of a screw body and screw head, with two structural configurations between them: 1) Fixed screw structure with integrated screw body and head (fixed screws); 2) Non-fixed screw structure with spherical hinge connection between screw body and head (multi-axial screws).
Multi-axial screws expand intraoperative screw placement positions and angles, facilitate easier rod insertion, provide an improved biomechanical environment for vertebral fixation, reduce stress shielding probability, and enhance surgical flexibility.
The system offers multiple options, allowing surgeons to select different configurations, various lengths of pre-contoured rods, and pedicle screws of different diameters and lengths according to individual patient needs.
The system pioneers an advanced design concept: the "Functional Gradient Interface" theory, achieving optimal material selection and coupling between screws, rods, and set screws.
System Characteristics:
(1) Specifically addresses broader clinical surgical condition requirements
(2) Better maintains correction, effectively reducing angle loss during correction procedures
(3) Thread design conforming to physiological structural characteristics of the population, providing superior holding power
(4) Multiple set screw options for convenient clinical application
(5) Excellent fatigue resistance and corrosion resistance, suitable for long-term implantation under load-bearing conditions
(6) Good biocompatibility
(7) Radiolucent, compatible with MRI, without interfering with imaging observation
