Specification builder · Tier C
Anaesthesia workstation (anaesthetic machine with integrated ventilator, circle breathing system, gas and agent monitoring and scavenging) for adult and paediatric operating theatres, with neonatal capability as an option
An anaesthesia workstation mixes oxygen, air and nitrous oxide with a volatile anaesthetic vapour, delivers it to the patient through a circle breathing system with its own ventilator, monitors pressures, volumes and gases, and removes waste gas from the theatre. Every operating theatre in a public or private hospital needs one, from THQ and DHQ theatres to tertiary cardiac, neuro and paediatric surgery. The key tender decisions are mechanical or electronic gas control, how much ventilator capability is needed, integrated gas monitoring, neonatal capability, battery back-up and scavenging.
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Standards this specification draws on
- ISO 80601-2-13 Particular safety and essential performance standard for anaesthetic workstations, including gas delivery, hypoxic guard, ventilator, monitoring and scavenging systems.
- IEC 60601-1 General electrical and mechanical safety for medical electrical equipment.
- IEC 60601-1-2 Electromagnetic compatibility, so diathermy and other theatre equipment do not disturb the workstation.
- IEC 60601-1-8 Alarm system design: priorities, sounds and signals.
- ISO 80601-2-55 Respiratory gas monitors measuring CO2, O2, N2O and anaesthetic agents.
- ISO 5360 Agent-specific filling systems for anaesthetic vaporizers, preventing wrong-agent filling.
- ISO 5356-1 Standard 15/22 mm conical connectors so any circuit, mask and filter fits.
- ISO 7396-2 Anaesthetic gas scavenging disposal systems that the workstation's AGSS connects to.
- IEC 62304 Software life-cycle for medical device software controlling ventilation, gas mixing and alarms.
- ISO 14971 Risk management applied by the manufacturer across design and production.
- ISO 13485 Quality management system of the manufacturer.
- DRAP Medical Devices Rules, 2017 Registration/enlistment required to import and sell the workstation in Pakistan.
Common mistakes in tenders for this equipment
- Naming a single maker's vaporizer mounting system or vaporizer model instead of asking for an industry-standard plug-in mount that accepts vaporizers of more than one make.
- Requiring a particular ventilator drive (piston, bellows or other) or a proprietary mode name, instead of the clinical function and measurable ranges, which locks the tender to one brand.
- Writing automatic end-tidal control, electronic vaporizers or built-in high-flow oxygen into a general theatre tender, which only one to three makers can meet.
- Not pricing CO2 absorbent, sampling lines, water traps, O2 and flow sensors and circuits, so a cheap workstation becomes expensive to run.
- Not matching gas hose probes and cylinder yokes to the hospital's own terminal units and cylinders, so the machine cannot be connected on delivery.
- Buying workstations without a working scavenging route, so waste gas vents into the theatre and exposes staff.
- Leaving out vaporizer servicing and agent-analyser checks, so vaporizer output drifts unnoticed over the years.
- Accepting refurbished, demonstration or discontinued models without a written 10-year spare-parts undertaking.