SJ Medical
SJ Medical
Abdominal Aortic Aneurysms (AAA) and Thoracic Aortic Aneurysms (TAA) present some of the most critical challenges in cardiovascular and vascular medicine. The treatment landscape has shifted dramatically over the past two decades from open laparotomy to minimally invasive Endovascular Aneurysm Repair (EVAR) and Thoracic Endovascular Aneurysm Repair (TEVAR). This clinical evolution has saved millions of lives by minimizing intraoperative trauma, reducing ICU hospitalization times, and accelerating patient rehabilitation pathways.
To sustain this surgical shift, global healthcare providers require high-precision vascular interventional tools. High-quality self-expanding Nitinol (Ni-Ti) stent systems, catheter introducer sheaths, high-pressure balloon dilatation catheters, and precise inflation devices represent the core engineering required for successful clinical outcomes. As global demands grow, specialized manufacturers in China are moving up the value chain. Leading companies like Hangzhou SJ Medical Co., Ltd. are setting new benchmarks by combining GMP-certified cleanroom operations, state-of-the-art laser processing, and comprehensive ISO-regulated supply chains.
Hangzhou SJ Medical Co., Ltd. was established in 2015 and is dedicated to the research, development, manufacturing, and commercialization of vascular interventional medical devices. The company focuses on both cardiovascular and peripheral intervention fields, striving to provide safe, reliable, and innovative solutions for healthcare providers worldwide.
Over the years, SJ Medical has developed a comprehensive product portfolio covering key areas of vascular intervention. Its offerings span from various types of balloon catheters for coronary and peripheral applications to supporting access and diagnostic devices, as well as advanced stent systems. Through continuous innovation and strong R&D capabilities, the company has obtained multiple patents and international certifications, laying a solid foundation for sustainable growth in both domestic and global markets.
SJ Medical operates a modern manufacturing facility with a total area of approximately 5,000 square meters. The factory is built in strict accordance with Good Manufacturing Practices (GMP) standards. It features a high-standard cleanroom environment, including a million-class clean workshop with localized hundred-class areas for critical assembly, welding, and packaging processes.
The company is supported by a highly experienced technical team, many of whom have been engaged in the medical device industry for decades. Under the leadership of senior engineers, SJ Medical maintains strict quality control and continuously improves its manufacturing processes to ensure product reliability and consistency. This industrial footprint allows us to support massive export volumes while catering to complex OEM/ODM projects for international medical brands.
Vascular engineering requires high-level material science and strict tolerance controls. Stent systems used for aneurysm repair must exhibit excellent radial force, low fatigue characteristics, and precise deployment mechanisms. SJ Medical focuses on several core technical fields:
Optimization of catheter shaft braiding (stainless steel or nitinol) to ensure maximum torque response without kinking in highly tortuous iliac and femoral paths.
Application of durable hydrophilic coatings on the access sheath outer diameter to reduce friction forces by up to 80% during insertion and withdrawal.
R&D of controlled mechanical release mechanisms to prevent stent-graft migration during aortic neck deployment, ensuring millimeter-level accuracy.
Vascular device manufacturing demands a combination of advanced chemical synthesis, precision machining, and clean assembly. China's specialized supply chain clusters—particularly in areas like Zhejiang—enable robust cost control and delivery speed.
Our vertical integration covers the entire product lifecycle:
| Supply Chain Dimension | How We Optimize It | Clinical & Commercial Advantage |
|---|---|---|
| Raw Material Sourcing | In-house synthesis of high-purity heparin sodium and advanced medical grade PTFE/Pebax materials. | Consistency in anticoagulation efficiency and reliable catheter physical characteristics. |
| Tooling & Machining | Integration of CNC laser micromachining systems and balloon forming molds. | Fast prototype cycles for OEM custom stent shapes and delivery sheath configurations. |
| Sterilization & Packing | State-of-the-art ETO (Ethylene Oxide) sterilization validated under ISO 11135 standards. | Guaranteed sterility assurance levels (SAL 10^-6) and long shelf-life packaging. |
| Logistics & Lead Times | Established export channels via major shipping terminals with specialized cold chain support when needed. | Rapid replenishment of high-pressure inflation devices and balloon catheters to global distributors. |
Quality compliance is the core of vascular interventions. To support hospital procurement networks and medical importers in highly regulated regions, SJ Medical operates under stringent standards:
Today, our products are trusted in over 20 countries. We maintain long-term partnerships with distributors and hospital networks throughout Europe (Finland, Italy, Spain, France, Netherlands), Asia (India, Indonesia), the Middle East (Turkey), and Africa (Egypt).
Our engineers and global compliance specialists have compiled answers to key clinical and technical questions relative to vascular intervention devices, stent-grafts, and high-pressure catheter components.