Roche Clot Catcher Pre-Analytical Sample Filter - Thermoplastic Elastomer (TPE), Non-Sterile (MPN: 03112012180)

Expiration: 2023-08.

The Roche 03112012180 (also cataloged as BP2243) is a precision-engineered pre-analytical inline sample collection filter designed for critical care diagnostics, blood gas analyzers, and clinical chemistry systems. Fabricated from a highly flexible and chem-resistant Thermoplastic Elastomer (TPE), these single-use clot catchers serve as a structural protective barrier between patient whole-blood samples and the ultra-sensitive internal fluidic sensors of analytical systems (such as legacy Roche OMNI, AVL, or cobas point-of-care blood gas monitors). Placed in-line with syringes or capillary tubes prior to sample aspiration, this component intercepts macro-fibrin webs, micro-clots, and cellular aggregates without causing hemolysis or chemical interference, preventing expensive instrument downtime and sensor blockages.

Technical Performance and Design

• Flexible TPE Composition: Molded from a high-grade Thermoplastic Elastomer that yields an airtight, leak-proof friction seal when combined with standard capillary tubes or syringe hubs, preventing sample spray-back or vacuum loss.

• Inline Micro-Clot Elimination: Features an internal porous micro-matrix optimized to trap fibrin strands and early-stage clotting bodies from raw whole blood, while permitting unhindered transfer of vital blood gases, electrolytes, and metabolites.

• Hemolysis-Free Fluid Dynamics: The smooth internal flow channel geometry controls shear stress on fragile blood cells, ensuring that the filtering process does not introduce artificial hemolysis that could skew potassium or hemoglobin parameters.

• Universal Critical Care Fit: Designed with exact mechanical tolerances to mount flush onto standard blood gas capillary adapters and analytical sample injection ports, ensuring smooth integration into rapid critical care workflows.

Product Specifications

• Catalog Number / MPN: 03112012180 (Cross-listed as BP2243 / 03112012-180)

• Manufacturer / Brand: Roche Diagnostics

• Material Composition: Medical-Grade Thermoplastic Elastomer (TPE)

• Sterility / Process State: Non-Sterile Single-Use Disposable Components

• Chemical Compatibility: Validated for whole blood, capillary samples, and standard calibration fluids

• Standard Pack Configuration: Pack of 250 Clot Catchers per box

Key Benefits and Applications

• Blood Gas Analyzer Protection: Acts as the primary line of defense for critical care systems, keeping dense fibrin clots from entering the micro-capillary paths of pH, pCO2, and pO2 electrode modules.

• Pediatric and Neonatal Micro-Samples: Highly valued in neonatal intensive care units (NICU) where processing difficult-to-obtain, slow-flowing heel-stick capillary samples often presents an elevated risk of micro-clotting.

• Reduced Maintenance Downtime: Trapping biological blockages outside the analyzer eliminates the need for manual protein clearing flushes, sensor disassembly, or premature electrode replacement cycles.

• Preserved Assay Metrics: Allows immediate filtration at the point of care without requiring long centrifugation loops, keeping partial gas pressures intact for accurate, time-sensitive diagnostics.

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