Sebra 2600/1105 RF Tube Sealer for Plasma Bags and Blood Collection Sets

Overview

The Sebra 2600/1105 RF Tube Sealer is a precision-engineered, benchtop-integrated radiofrequency (RF) thermal welding system designed specifically for the sterile, reproducible sealing of thermoplastic tubing used in blood collection, plasma processing, leukoreduction, and component separation workflows. Unlike mechanical crimping or heat-bar systems, RF sealing delivers consistent energy deposition directly into the polymer matrix—enabling uniform molecular fusion without external pressure adjustment or operator-dependent force application. This principle ensures repeatable seal integrity across variable tube diameters (typically 3–12 mm OD), critical for maintaining sterility and preventing post-seal leakage during centrifugation, storage, or transport. The system comprises the Model 2600 RF generator base unit and the interchangeable Model 1105 handheld sealing head—optimized for high-throughput, ergonomic operation in blood bank laboratories, apheresis centers, and Good Manufacturing Practice (GMP)-adjacent plasma fractionation environments.

Key Features

• Smart™ RF Power Regulation: Automatically modulates output energy based on real-time impedance feedback from the tubing material, eliminating manual calibration for different wall thicknesses or compositions (e.g., DEHP-free PVC, TPE, polyolefin blends).
• Consistent Seal Geometry: Produces a defined, visually distinct weld zone with controlled width—facilitating reliable manual or automated segment separation while preserving downstream sterility.
• Modular Head Architecture: Supports rapid interchange between Model 1105 (handheld) and Model 2605 (bench-mounted) sealing heads—enabling workflow flexibility without hardware replacement.
• Tool-Free Head Removal: Sealing electrodes are fully detachable for ultrasonic cleaning or alcohol wipe decontamination, minimizing cross-sample residue and supporting ISO 13485-aligned maintenance protocols.
• Thermal Load Management: Integrated thermal cutoff and duty-cycle monitoring prevent overheating during sustained operation—essential for temperature-sensitive biological matrices such as platelet-rich plasma or cryoprecipitate.

Sample Compatibility & Compliance

The Sebra 2600/1105 is validated for use with standard medical-grade thermoplastic tubing including polyvinyl chloride (PVC), thermoplastic elastomers (TPE), and select polyolefin formulations commonly employed in FDA-cleared blood bag systems (e.g., Terumo BCT, Fresenius Kabi, Haemonetics). It complies with essential electrical safety standards IEC 61010-1 and IEC 60601-1 (Class I, Type BF applied part). While not a medical device itself, the system supports adherence to AABB Technical Manual Chapter 7 (Blood Collection and Processing), CLSI GP45-A4 (Handling of Blood Specimens), and EU MDR Annex I General Safety and Performance Requirements when integrated into validated blood banking SOPs. Seal integrity meets ASTM F1886/F1886M (Standard Test Method for Determining Integrity of Seals) criteria under routine operational conditions.

Software & Data Management

The Model 2600 operates as a standalone analog-digital hybrid controller with no embedded operating system or network interface. All parameter settings—including RF power level, weld duration, and cooldown delay—are configured via front-panel rotary encoder and LED display. For quality assurance traceability, users may log batch-specific parameters manually or integrate with external LIMS via RS-232 (optional) using ASCII command protocol. Audit trails, electronic signatures, and 21 CFR Part 11 compliance require third-party middleware; however, the device’s deterministic response and stable output enable full GxP validation per ISPE GAMP5 Category 3 guidelines.

Applications

• Whole blood and component collection: Sealing satellite bags pre- and post-centrifugation to maintain closed-system integrity.
• Apheresis procedures: Final sealing of plasma, platelet, or RBC collection sets prior to quarantine or release testing.
• Leukoreduction filtration: Securing inlet/outlet tubing after filter priming and sample passage.
• Plasma fractionation support: Isolating cryo-poor plasma segments or labeling aliquots for viral inactivation steps.
• Cell therapy manufacturing: Sealing tubing in closed-process bioreactor harvest lines where sterility assurance is non-negotiable.

FAQ

What tubing materials are compatible with the Sebra 2600/1105?
PVC (including DEHP-free formulations), TPE, and other RF-responsive thermoplastics commonly used in blood bag and infusion set manufacturing.
Does the system require routine calibration?
No—Smart™ RF regulation eliminates need for user calibration; however, annual performance verification against known tubing lots is recommended per internal QA protocols.
Can the 1105 handheld head be sterilized?
The electrode assembly is autoclavable at 121°C for 20 minutes (max 5 cycles); full head housing is rated for IPA wipe disinfection only.
Is technical support available outside the U.S.?
Yes—SEBRA maintains authorized service partners in EU, APAC, and LATAM regions; all firmware updates and service bulletins are distributed through the SEBRA Customer Portal.
How does RF sealing compare to hot-bar sealing for blood tubing?
RF sealing induces volumetric heating within the polymer, resulting in stronger intermolecular bonds and lower risk of tube collapse or occlusion—particularly critical for low-flow plasma or platelet applications.