Schiller AG ISA CO2 Sensor (AKA: PhaseIn Unit), Merge Part Number HW-HEMO-00001. The PhaseIn Uni...

FDA Device Recall #Z-1923-2017 — Class II — March 30, 2015

Recall Summary

Recall Number Z-1923-2017
Classification Class II — Moderate risk
Date Initiated March 30, 2015
Status Terminated
Voluntary Voluntary: Firm initiated

Recalling Firm

Firm Merge Healthcare, Inc.
Location Hartland, WI
Product Type Devices
Quantity 23 sensors (PhaseIn Units)

Product Description

Schiller AG ISA CO2 Sensor (AKA: PhaseIn Unit), Merge Part Number HW-HEMO-00001. The PhaseIn Unit is an optional accessory (sold separately) to the Merge Hemo Patient Data Module (PDM). The PDM is a major component of the Merge Hemo system.

Reason for Recall

The units may display the alarm "sampling line clogged" after the flow zeroing procedure that is conducted automatically 1 hour after start up. This could result in the potential of a small bias added to the CO2 measurement and affect the alarm notification.

Distribution Pattern

US Distribution was made to medical facilities located in AL, FL, ID, LA, MO, NC, OK, SC, TX, and UT. There was government distribution and no foreign/military distribution.

Lot / Code Information

ISA CO2 Sensor serial numbers: 107349, 107357, 107358, 107363, 107370, 107377, 107390, 107407, 107435, 107476, 107509, 107510, 107556, 107659, 107700, 107707, 107768, 107776, 107831, 107832, 107836, 107839, and 107841.

Other Recalls from Merge Healthcare, Inc.

Recall # Classification Product Date
Z-2518-2025 Class II Merge Hemo, Model RCSV2, Model/Catalog Number 9... Aug 11, 2025
Z-1399-2025 Class II VERICIS, Merge Cardio, Model/Catalog Number: Ve... Feb 19, 2025
Z-1402-2025 Class II Merge Cardio, Model/Catalog Number: Version 12.... Feb 19, 2025
Z-1400-2025 Class II VERICIS, Merge Cardio, Model/Catalog Number: Ve... Feb 19, 2025
Z-1398-2025 Class II VERICIS, Merge Cardio, Model/Catalog Number: Ve... Feb 19, 2025

Frequently Asked Questions

Contact your healthcare provider and the device manufacturer immediately. Check whether your specific model number and lot number are included in the recall scope. For external devices, stop using the affected product and arrange a replacement. For implanted devices, do not panic — removal is typically not required unless the risk assessment clearly indicates it. Your physician will guide you based on your individual clinical situation and the FDA's recommended actions. Report any adverse effects you may have experienced to FDA MedWatch at 1-800-FDA-1088.

Class I recalls indicate a reasonable probability of serious adverse health consequences or death from the defect. Class II recalls involve products that may cause temporary or medically reversible adverse health consequences, or where serious consequences are remote. Class III recalls cover products not likely to cause any adverse health consequences, typically involving technical regulatory violations. The classification guides urgency — Class I recalls require immediate action, while Class III may simply involve returning a product or acknowledging a labeling change. Always read the specific recall notice for recommended patient actions.

Report problems with medical devices to the FDA through MedWatch at 1-800-FDA-1088 or online at FDA.gov/safety/medwatch. Healthcare facilities are required by law to report device-related serious injuries and deaths. Patients and consumers can also report voluntarily. Include the device name, manufacturer, model number, and a description of the problem and any patient outcome. Reports from patients and clinicians help the FDA identify emerging safety signals and may trigger investigations that lead to recalls of dangerous devices.

What Should You Do?

Stop using this device if you are affected by this recall. Contact your healthcare provider and the manufacturer immediately for guidance. Report adverse events to FDA MedWatch.