SJ Medical
SJ Medical
Explore our core selection of CE-certified medical devices designed for cardiovascular, peripheral, and neurovascular procedures.
How the evolution of microsurgery materials is redefining clinical outcomes in intracranial aneurysm procedures.
The global market for neurovascular clipping devices represents one of the most demanding sectors in medical device manufacturing. Designed primarily for the treatment of cerebral aneurysms, these microsurgical implants require an extraordinary degree of material precision, biomechanical engineering, and biological safety. Despite the growth of endovascular therapies like coiling and flow diversion, surgical clipping remains the absolute gold standard for definitive aneurysm occlusion, particularly in wide-necked or complex bifurcations where long-term recanalization risks must be mitigated.
Modern neurovascular clips are engineered from high-grade biocompatible titanium alloys (such as Ti-6Al-4V ELI). These materials are chosen specifically to minimize magnetic resonance imaging (MRI) artifacts, ensuring that patients can safely undergo postoperative imaging up to 3.0 Tesla. The industry has shifted away from older cobalt-nickel alloys to reduce the risk of tissue reactions and optimize the mechanical closure forces that keep the clip secured over years of arterial pulsatility.
Globally, healthcare providers face rising demands for cost-efficient medical solutions without compromising clinical reliability. This has driven hospitals to seek out manufacturers who can deliver high-quality, certified surgical clips directly from consolidated, highly optimized production plants, minimizing middle-tier supply chain costs and securing a steady inventory of diverse clip geometries (straight, curved, fenestrated, and mini clips).
1. MRI Compatibility: Imperative for clear diagnostic post-op images up to 3.0T.
2. Precise Closing Force: The spring mechanism must maintain a constant force between 110g and 130g to prevent vascular slippage or vessel damage.
3. Biomedical Grade 5 Titanium: Superior biocompatibility and fatigue resistance over extended lifetimes.
| Performance Indicator | Titanium Alloy (Ti-6Al-4V ELI) | Cobalt-Chromium (Phynox/Elgiloy) |
|---|---|---|
| MRI Artifact Profile | Excellent (Minimal distortion, compatible up to 3.0T) | Moderate (Produces significant artifact shadows) |
| Closing Force Stability | Excellent (Negligible fatigue over 50+ years) | High (Good elastic memory, heavier profile) |
| Biocompatibility | Superior (Promotes stable tissue integration) | Good (Slight risk of nickel/cobalt sensitivity) |
| Weight Efficiency | Ultra-lightweight (Reduced pressure on surrounding brain tissue) | Heavier (Increased gravity traction on fine vessels) |
Established in 2015, Hangzhou SJ Medical Co., Ltd. is a dedicated developer, manufacturer, and commercialization expert of vascular interventional medical devices. Focusing on both cardiovascular and peripheral intervention fields, the company works tirelessly to provide safe, reliable, and innovative solutions for healthcare providers globally.
Over the years, SJ Medical has built an expansive medical product portfolio covering crucial areas of vascular intervention. The product catalog spans from various types of balloon catheters for coronary and peripheral applications to supporting access and diagnostic devices, alongside advanced stent systems. Through constant innovation and highly disciplined R&D processes, the company has obtained multiple patents and international certifications, establishing a solid foundation for sustainable growth in both domestic and global markets.
State-of-the-art cleanroom manufacturing and strict compliance to guarantee surgical instrument safety.
Operating a modern facility with a total area of approximately 5,000 square meters built to strict GMP standards. Features a high-standard cleanroom environment, including a million-class clean workshop with localized hundred-class areas for critical packaging and biological processes.
Supported by a highly experienced technical team, many of whom have spent decades in the medical device industry. Under senior engineering leadership, we maintain strict quality control and continuously refine manufacturing workflows to ensure clinical safety.
Our Chinese factory location integrates local raw material sourcing, scale economics, and rapid prototyping capability. This allows us to supply global markets with premium CE-certified vascular and neurovascular components at a fraction of standard lead times.
Providing physicians with reliable, high-performance interventional access and microsurgical treatment equipment.
Our products focus on the development of vascular interventional devices designed for both coronary and peripheral procedures. Its product range integrates interventional access systems, diagnostic catheters, and therapeutic devices, forming a complete solution for minimally invasive vascular treatments. Each product is developed with an emphasis on precision, safety, and clinical performance, aiming to support physicians in achieving optimal procedural outcomes.
The company’s products are widely applied in minimally invasive procedures involving both coronary and peripheral vascular systems. They play an important role in the diagnosis and treatment of vascular diseases, helping to improve procedural efficiency while enhancing patient safety and recovery.
With our specialized design methodologies, these tools allow neurosurgeons and vascular specialists to easily navigate delicate pathways. Through extreme quality testing, including structural tensile tests, balloon burst pressure tests, and mechanical closing force checks for neurovascular clips, we guarantee the highest clinical reliability.
Adhering to strict international standards to ensure risk-free performance during critical surgical operations.
We strictly adhere to international quality standards and regulatory requirements. Our company has obtained CE certification, ISO 13485 quality management system certification, and CFDA approval, along with free sale certificates, demonstrating our strong commitment to product quality and compliance.
Our production facilities are equipped with state-of-the-art machinery, including precision balloon forming equipment, laser welding and marking technologies, and comprehensive cleanroom assembly systems to ensure the absolute integrity of our finished medical devices.
Our full-process quality control incorporates physical, chemical, and biological testing laboratories. Each batch of devices is tested for sterility, particulate contamination, pressure retention, and material composition, guaranteeing conformity to the highest international standards.
Optimizing neurosurgical interventions across diverse clinical environments.
In acute subarachnoid hemorrhage (SAH) emergencies, microvascular clips must be deployed immediately to secure the bleeding point. Our titanium clips provide secure closing forces to control pressure rapidly, preventing secondary re-bleeding episodes during critical surgical reconstructions.
For patients diagnosed with unruptured incidental intracranial aneurysms, preventive microsurgical clipping offers a permanent solution. Our lightweight, non-ferromagnetic titanium alloy allows the patient to live a normal, restriction-free lifestyle without interference in future diagnostic procedures.
Giant, wide-necked, or fusiform aneurysms often require multi-clip tandem reconstruction. The slim design, coupled with diverse blade profiles (bayonet, fenestrated, cross-over), allows neurosurgeons to systematically reconstruct the parent vessel anatomy without compromising local blood flow.
The neurovascular implant market is shifting towards personalized medicine. Advancements in 3D angiography and printing allow surgeons to model patient-specific aneurysm structures prior to opening the cranium. Consequently, demand is surging for custom OEM clip configurations, specialized blade curves, and custom spring tensions. In response, our R&D department continues to optimize manufacturing pathways, working directly with neurosurgical institutes to prototype and produce tailored components under tight regulatory compliance.
Hangzhou SJ Medical Co., Ltd. has established long-term partnerships with clients across Europe, Asia, the Middle East, and Africa. Our products are currently distributed in countries such as Finland, Italy, Spain, France, the Netherlands, India, Indonesia, Turkey, and Egypt, among others. We provide end-to-end regulatory documentation support to simplify local customs clearance processes.
Crucial regulatory, technical, and commercial answers for hospital buyers and distributors.
Explore our highly reliable clinical access systems engineered for high-performance hospital procedures.
