SJ Medical
SJ Medical
Clinical-grade medical devices and components engineered with strict compliance to global safety benchmarks.
In modern interventional cardiology and peripheral vascular interventions, the biological interface between the medical device and the bloodstream dictates clinical success. As a leading OEM/ODM Plasma Preparations Supplier & Exporter, we specialize in high-tech gas plasma treatments and biochemical preparations that enhance the biocompatibility, hydrophilicity, and anti-thrombotic performance of vascular interventional devices.
Using localized RF plasma polymerization and cold chemical vapor deposition (CVD), we modify the surface properties of complex catheters, guidewires, and micro-hypotubes. This ensures reduced friction, optimized tactile response, and minimized thrombotic responses when devices navigate complex arterial pathways.
High-precision plasma processing alters outer polymeric layers at the nanometer level without affecting the tensile strength or structural integrity of the underlying metal or polymer core.
Why global OEMs partner with our high-tech cleanroom facility in Hangzhou, China
Our facility includes localized Class 100 sterile environments for critical plasma polymerization and catheter assembly processes, guaranteeing absolute control over airborne particulates.
Every step of our process—from raw material verification of Bivalirudin and Ticagrelor to packaging of PTA balloon catheters—meets stringent EN ISO 13485 standards.
Equipped with advanced laser-welding, laser-cutting, and precision balloon forming systems, we reduce the path from prototype validation to commercial export by up to 40%.
Square Meters Plant Area
Exporting Target Markets
Localized Clean Area
Traceable Batch Quality
Our OEM/ODM capability extends beyond hardware manufacturing. We address the physical-chemical properties of catheter surfaces. Unmodified polymeric surfaces such as Pebax, Nylon, and PTFE have hydrophobic tendencies that trigger plate-let adhesion and high frictional force during insertion. By implementing low-pressure gas plasma treatments, we deposit highly cross-linked hydrophilic monomer layers onto the devices.
Through molecular engineering, our plasma preparation processes reduce hydrophobic contact angles from over 90° down to less than 15°, facilitating effortless navigation through calcified peripheral and coronary anatomy.
Hangzhou SJ Medical Co., Ltd. is positioned as a comprehensive partner for global clinical brands, medical device distributors, and pharmaceutical compounding firms. We streamline complex regulatory and manufacturing supply chains by consolidating component engineering, chemical raw material supplies, and sterilization under one quality management system.
Whether you require raw API inputs like Bivalirudin powder, complex PTCA guidewires, custom laser-cut thrombectomy stents, or bulk orders of PTA balloon dilatation catheters, our workflows conform to global trade guidelines (MDR 2017/745, FDA 21 CFR Part 820).
We provide comprehensive technical support dossiers, sterilization validation reports (Ethylene Oxide - EO), and bio-compatibility data sheets to accelerate your domestic market registrations.
Key advancements driving clinical efficacy, safety profiles, and production economics.
Direct chemical grafting of Direct Thrombin Inhibitors (such as Bivalirudin) to eliminate systemic heparinization side effects during long cardiac procedures.
Developing drug-coated balloon (DCB) technologies that leave no permanent implant behind, maintaining physiological vessel motility and remodeling capacity.
Engineering thinner, highly structural catheter sheaths and low-profile distal hypotubes to access sub-millimeter peripheral micro-vessels safely.
Technical clarifications regarding our OEM/ODM operations, chemical APIs, and design capacities.
Plasma treatments modify only the surface layers (typically within 10-100 nanometers) of the catheter or stent. This increases surface energy and hydrophilic bonding capability. Clinically, this reduces insertion friction forces, avoids arterial wall dissection, limits platelet adhesion, and enhances precise navigability in tight vascular lesions.
We maintain a modern 5,000 square meter plant operating under strict cleanroom conditions (Class 10,000/ISO Class 7 and Class 100/ISO Class 5 for critical assemblies). We employ comprehensive cleanroom protocols, advanced ultrasonic cleaning, and full EO validation runs for every distinct batch to eliminate risk of contamination.
Yes, we supply and export high-purity raw powder formulations of Bivalirudin and Ticagrelor. These active pharmaceutical compounds are critical for anti-thrombogenic and anti-platelet coatings in vascular drug-delivery systems, as well as for direct clinical formulations.
We possess ISO 13485 quality system certifications, European CE approvals, and CFDA/NMPA clearances. We routinely assist global buyers with Free Sale Certificates (FSC) and technical documentation files necessary for smooth import processing across the EU, Middle East, and APAC region.
Yes. Our manufacturing facilities are equipped with precision multi-axis laser cutters and advanced balloon forming systems. We can customize hypotube distal patterns (spiral cuts, step cuts) and produce balloons with varying wall thicknesses, inflation diameters, and profile compliance profiles to suit client specs.
Extending from high-precision vascular catheters to medical active pharmaceutical ingredients (APIs).
