Engineered under Class 100,000 cleanroom environments. Optimized for working-channel compatibility, mucosal hemostasis, resection, and lithotripsy access.
In modern interventional endourology and therapeutic endoscopic retrograde cholangiopancreatography (ERCP), the Dormia basket represents one of the most critical micro-mechanical electromechanical assemblies in clinical medicine. As surgical techniques have migrated aggressively toward Retrograde Intrarenal Surgery (RIRS) and ultra-thin flexible ureterorenoscopy (fURS), the mechanical performance thresholds demanded from stone extraction baskets have escalated dramatically. Clinicians no longer tolerate rigid basket wires, unpredictable radial opening forces, or tip impingements that damage fragile caliceal urothelium.
As a specialized ODM and OEM Dormia basket supplier and factory based in Jiangxi, China, our manufacturing infrastructure is built directly upon the metallurgical properties of binary Nickel-Titanium (Nitinol - ASTM F2063) shape-memory alloys. Nitinol exhibits a reversible phase transformation between austenite and martensite crystalline structures. When deployed through a deflectable flexible scope bent up to 270 degrees, conventional stainless steel baskets experience permanent plastic deformation, resulting in asymmetrical basket wire spacing and terminal stone entrapment failures. In contrast, our superelastic Nitinol baskets undergo stress-induced martensitic transformation, allowing them to absorb up to 8% elastic strain without permanent set, returning instantaneously to their factory-set three-dimensional spherical or helical geometry upon sheath retraction.
Furthermore, our factory utilizes proprietary wire electro-discharge machining (EDM) and automated laser micro-welding in inert argon chambers. By eliminating manual soldering or adhesive bonding at the distal tip and proximal drive hub, we achieve breaking pull forces exceeding 28 Newtons—far surpassing standard ISO/FDA guidance requirements (typically 15N). This mechanical integrity ensures that in cases of dense caliceal stone impaction, the basket can safely disengage or endure lithotriptor shockwaves without catastrophic structural dissociation inside the renal pelvis or common bile duct.
Customizable OEM/ODM configurations engineered for specific endoscopic anatomy, caliceal depth, and stone capture dynamics.
Engineered for lower pole renal calices and tortuous ureteral passages. The true zero-tip construction allows stone capture directly against mucosal tissue walls without tissue perforation or hematoma risk.
Features flattened ribbon Nitinol wires that deliver superior radial dilation forces. This prevents stone displacement into inaccessible calices during basket expansion and provides maximum gripping stability on smooth calculi.
A hybrid cage architecture optimized for micro-fragment sweeping following holmium or thulium laser lithotripsy. Traps gravel and micro-fragments down to 1mm, preventing residual stone dust recurrence.
Combining world-class micro-machining clusters with vertical cleanroom assembly, providing global distributors with unassailable margin protection and rapid time-to-market.
From custom Nitinol shape-setting mandrels and precision micro-extrusion lines to laser welding and EO sterilization chambers, all operational units sit within our ISO 13485 facility. Zero outsourced assembly preserves strict lot traceability.
Direct-from-factory procurement cuts multi-tiered broker margins. We provide OEM contract pricing that allows regional brand owners to capture high-margin government tenders and private hospital networks while beating multinational list prices by 35–50%.
Need customized basket dimensions, proprietary handle ergonomic designs, or specific catheter colors? Our dedicated R&D engineering group turns around customized 3D CAD models within 48 hours and functional prototypes within 14 business days.
We supply turnkey regulatory documentation for global market authorization, including complete ISO 10993 biocompatibility test suites, ISO 11135 EO sterilization validation, accelerated aging reports, and technical construction files matching EU MDR standards.
Engineered to interface seamlessly with modern flexible video scopes across both endourological and gastrointestinal clinical specialties.
When operating in the acute angles of the lower renal calyx, traditional baskets choke irrigation flow and restrict scope deflection. Our 1.5Fr and 1.8Fr tipless Dormia baskets preserve greater than 85% of scope deflection capability (up to 270°), maintaining continuous visual clearance and rapid stone retrieval without thermal injury risks.
During Holmium:YAG or Thulium Fiber Laser (TFL) lithotripsy, calculi frequently migrate deeper into renal parenchyma under irrigation pressure ("retropulsion"). Our stone baskets serve as mechanical backstops, stabilizing calculi inside the basket during direct laser pulse firing, preventing fragmentation loss.
In choledocholithiasis interventions within the extrahepatic and intrahepatic biliary ducts, larger caliber 4.5Fr and 6.0Fr Dormia baskets deliver high radial opening force to navigate past biliary strictures, capture impacted gallstones, and safely extract them through the papilla of Vater following endoscopic sphincterotomy.
Comprehensive regulatory alignment matching the rigid compliance hurdles of European CE MDR, US FDA, and International Health Ministries.
| Evaluation Parameter | ZhuoRuiHua Factory Specification | Standard Industry Competitor | Clinical / Procurement Significance |
|---|---|---|---|
| Basket Wire Material | Medical Grade Superelastic Nitinol (ASTM F2063) | Standard Stainless Steel 304V or Generic Nitinol | 100% shape memory retention without permanent kinking or wire deformity during acute scope flexure. |
| Distal Wire Joint Construction | Argon Laser Micro-Welding (Tipless Flush Ball) | Silver Soldering / Crimped Brass Caps | Zero risk of toxic solder leaching; completely atraumatic to urothelial membranes during caliceal sweeping. |
| Joint Tensile Breaking Force | ≥ 28.0 Newtons (Validated under cyclic stress) | 12.0 – 16.0 Newtons | Prevents detachment inside patient anatomy during mechanical lithotripsy or extreme extraction traction. |
| Catheter Shaft Extrusion | Braided Polyimide / High-Density PTFE Composite | Single-lumen Polyethylene (PE) | Delivers true 1:1 torque responsiveness; prevents axial ovalization and working-channel friction drag. |
| Sterilization Validation | ISO 11135 EO Sterilization (SAL 10-6) | Generic Non-validated EO processing | Certified non-pyrogenic; Ethylene Oxide residual limits strictly below ISO 10993-7 requirements. |
| Regulatory Approvals | MDR CE Certified (Class IIa), ISO 13485:2016 | Basic ISO 9001 or domestic-only clearance | Direct acceptance in EU tenders, NHS frameworks, and streamlined US FDA 510(k) equivalency submissions. |
For international medical distributors, private-label brand holders, and Group Purchasing Organizations (GPOs), supplier reliability hinges on regulatory continuity and localized packaging adaptability. A minor non-conformance in sterile barrier pouch labeling or instruction for use (IFU) language compliance can halt multimillion-dollar tender consignments at customs borders.
Our Jiangxi factory operates an integrated regulatory documentation division dedicated to distributor support. We supply SKU-level documentation, including:
Factory-direct single-use instruments designed for high-turnover gastrointestinal, pulmonology, and urological interventions.
Direct answers addressing manufacturing tolerances, customization parameters, regulatory transfers, and commercial OEM partnerships.
Accelerate your medical brand’s commercial growth with certified ISO 13485 production, rapid prototype turnaround, and direct factory-gate pricing. Request technical samples or schedule an on-site cleanroom audit today.
