| Flow-Rate Range | Common range: approximately 0.01–100 mL/h, depending on the pump model, syringe size, and operating mode. | A broad, finely adjustable range supports both low-volume medication delivery and higher-volume fluid administration. | Confirm the minimum increment, maximum rate, rate units, and whether the stated range applies to every supported syringe size. |
| Flow-Rate Accuracy | Typical target: around ±2% to ±5% under specified laboratory conditions. Actual performance depends on syringe type, flow rate, temperature, and back pressure. | Higher accuracy reduces the risk of under-delivery or over-delivery, particularly when administering concentrated or high-risk medicines. | Review the test conditions, accuracy tolerance, start-up characteristics, and whether the specification applies to the complete delivery system. |
| Syringe Compatibility | Common syringe capacities include 1, 3, 5, 10, 20, 30, 50, and 60 mL. Compatibility varies by pump and syringe geometry. | Correct syringe recognition and secure fixation help maintain accurate plunger movement and prevent unintended displacement. | Check the approved syringe list, barrel dimensions, luer connection type, plunger fit, and compatibility with the syringes used in your facility. |
| Volume Resolution | Many programmable pumps provide volume and rate increments as small as 0.01 mL or 0.01 mL/h, although the available resolution is model-dependent. | Smaller programming increments allow more precise dose and flow adjustments for low-volume infusions. | Confirm the smallest selectable dose, rate, bolus volume, and displayed volume for each operating range. |
| Occlusion Detection | Adjustable occlusion thresholds are commonly expressed in pressure units such as mmHg or kPa. Detection time varies with flow rate, tubing compliance, and threshold setting. | Early detection can limit pressure buildup and alert clinicians to blocked tubing, a closed clamp, or catheter resistance. | Look for adjustable thresholds, visual and audible alarms, alarm-history recording, and automatic anti-bolus or pressure-release functions. |
| Anti-Bolus Performance | Anti-bolus systems reduce unintended fluid release after an occlusion is cleared. Residual bolus volume is device- and setup-dependent. | This feature is especially important when delivering potent medicines, because pressure accumulated during an occlusion may otherwise produce a sudden dose. | Request the measured residual bolus volume, test method, alarm response, and performance at different flow rates and syringe sizes. |
| Start-Up and Low-Flow Stability | At very low rates, delivery may show initial start-up delay or short-term flow fluctuation because of mechanical compliance and syringe friction. | Stable low-flow performance is essential for neonatal, pediatric, critical-care, and other low-dose applications. | Review start-up curves, trumpet or flow-accuracy graphs, minimum recommended flow rate, and performance with the intended syringe. |
| Bolus Function | Bolus volume and bolus rate are usually programmable or manually activated; available limits differ by pump configuration. | Controlled bolus delivery can support priming or prescribed loading doses without compromising dose control. | Verify bolus lockout, maximum bolus volume, bolus rate, dose limits, accidental-activation protection, and event logging. |
| Alarm and Safety Controls | Important alarms include occlusion, near-empty syringe, end of infusion, low battery, door or clamp status, and system error. | Clear alarms help clinicians respond quickly to interruptions, incorrect setup, or depleted power. | Assess alarm volume, visual indicators, alarm priority, silence duration, remote-alarm capability, and user access controls. |
| Power and Battery Operation | Battery operating time is commonly specified in hours and varies with display use, alarm activity, flow conditions, and battery age. | Reliable battery operation maintains infusion during patient transport or temporary loss of mains power. | Check battery runtime, charging time, battery replacement procedure, remaining-capacity display, and mains-failure alarm behavior. |
| Drug Library and Dose Limits | Advanced systems may support drug libraries with concentration limits, dose-rate limits, and soft or hard safety boundaries. | Dose-error reduction tools help prevent programming errors while preserving a controlled workflow. | Confirm library configuration, independent review requirements, user permissions, update procedures, and audit-trail capability. |
| Connectivity and Data Logging | Available functions may include event history, electronic records, nurse-call output, and network connectivity. Features vary significantly. | Recorded infusion events improve traceability, clinical review, maintenance, and quality assurance. | Verify data export format, cybersecurity controls, network integration, time synchronization, storage capacity, and audit-log retention. |
| Relevant Standards and Compliance | Key references may include IEC 60601-1 for general medical electrical safety, IEC 60601-1-2 for electromagnetic compatibility, IEC 60601-2-24 for infusion pump safety, and ISO 7886-1 for sterile single-use syringes. | Standards-based design and testing provide a structured basis for evaluating safety, performance, and compatibility. | Request the applicable conformity documents, test reports, risk-management records, labeling, instructions for use, and local regulatory documentation. |
| Maintenance and Calibration | Preventive maintenance intervals are defined by the manufacturer, usage conditions, institutional policy, and local regulations. | Regular inspection helps preserve delivery accuracy and identifies wear in the drive mechanism, sensors, battery, or clamps. | Check calibration procedures, accuracy verification equipment, service intervals, spare-parts availability, self-test functions, and service documentation. |
| Clinical Workflow and Usability | Useful design features include a clear display, intuitive programming, keypad lock, pole-clamp stability, visible syringe markings, and easy cleaning. | Simple, consistent operation reduces setup mistakes and supports safe use in busy clinical environments. | Evaluate the user interface, language options, screen visibility, cleaning compatibility, one-handed operation, and training requirements. |