Digital precision and simplicity are integrated into the Aisys* Carestation*.

Ventilation, vaporization, and gas delivery are all digitally controlled and measured. Plus, sophisticated communication protocols enable digital communication of comprehensive patient and system data. Aisys is designed to grow with you as your needs evolve. Just update the software to enhance the functionality of your system or add optional clinical decision support tools and information management systems.

Anesthesiologist in operating room.


Aisys is digital and software driven, enabling its capabilities to keep pace with your needs.  

GE's digital platform serves as a foundation from which to build innovative solutions to help you transform the anesthesia experience of the future.

  • Aisys is your vigilant partner, managing routine but critical perioperative tasks without tiring.
  • Integrated data management enables data-driven clinical decisions while providing data on ventilation, drug monitoring, patient monitoring, and fresh gas usage.
  • Redundant system protocols help ensure precise and reliable patient data information is delivered when and where you need it.  

Advanced Ventilation

The ventilation capabilities available on Aisys include:

  • PCV-VG
  • Volume Control
  • Pressure Control
  • PSVPro*
  • SIMV (Volume and Pressure)
  • Manual ventilation  

Well-Suited for Low-Flow Cases 

  • The integrated Advanced Breathing System (ABS) provides a low circuit volume (2.7 L), delivering fast-response.
  • The rising multi-breath bellows provide visual feedback regarding patient status. 

The 360° Difference: INview* Patient Displays

  • The Aisys Carestation INview large-panel displays are mounted on a movable arm with 360°of rotation.
  • Position the displays according to your preference. The INview system places critical information and controls in view and within reach.  

Electronic Control - A Different Technology

  • The digital vaporization of the Aisys Carestation includes continuous monitoring by multiple embedded sensors to help ensure precise delivery.
  • The Aisys Carestation's electronic agent control helps provide exceptional benefits, such as automatic record keeping of set agent concentrations and agent usage calculations.
  • Agent-specific Aladin2* Cassettes can be used to deliver isoflurane, sevoflurane, and desflurane anesthetic agents.
  • Low Agent Alarm alerts clinician when the agent volume in cassette is low.
  • The communication protocols enable data continuity.


GE Healthcare defines digital to mean that all core elements of the anesthesia system – the ventilation, vaporization, and gas delivery – are digitally controlled and measured.

A digital anesthesia system also includes advanced communication protocols that enable digital data communication.

Digital Ventilation

  • A comprehensive view of the patient’s ventilatory status is displayed and compared in flow, volume, and pressure loops over time.
  • The ventilator distinguishes between mechanical vs. spontaneous breaths, and responds with a change of color in the waveform.  

Digital Vaporization

  • By providing consistent outputs at a wide range of flow rates and carrier gas mixes, the digital vaporization provides a high level of accuracy.
  • The digital vaporization alerts clinicians with agent-level alarms for all agents supported.

Digital Gas Mixing and Delivery

  • Each gas is simultaneously monitored with multiple sensors.
  • The gas sample is measured and maintained at standard temperature and pressure (STP).  

Digital Data Communications

  • The three core elements of the Aisys Carestation are engineered with their own internal communication protocols, enabling digital communication.
  • The communication protocols enable data continuity.
  • Multiple CPUs designed into the system protect against a single point of failure and may help prevent excess maintenance costs.  


PCV-VG - Pressure Control Ventilation Volume Guaranteed  

Compliance in your patient’s lungs changes breath by breath. Pressure Control helps maximize time for gas exchange while delivering the same volume regardless of compliance changes.  

PCV-VG delivers the same tidal volume with all the benefits of Pressure Control Ventilation.  

  • PCV-VG helps ensure that your patients receive the same volume regardless of compliance changes caused by packs, retractors, position, surgical exposure, or relaxation.
  • Get consistent tidal volume in the face of compliance changes.
  • In PCV-VG, the Smartvent* 7900 delivers the preset tidal volume with low pressure using a decelerating flow.
  • The first breath delivered to the patient is a volume-controlled breath; this is visible on the screen with a 'square' flow waveform and a 'shark-fin' pressure waveform.
  • The patient's compliance is determined from this volume breath, and the inspiratory pressure level is then established for the subsequent PCV-VG breaths. PCV-VG breaths are characterized by a decelerating flow waveform and a square pressure waveform.


PSVPro* - Pressure Supported Ventilation  

The GE Healthcare 7900 SmartVent's* advanced feature PSVPro (Pressure Supported Ventilation) expands the clinical capabilities of the Anesthesia Delivery portfolio to help meet the needs of your patients.

With a broad patient range capability, an adjustable flow trigger, PEEP, and an apnea backup mode, the PSVPro mode helps simplify the work of caring for your spontaneously breathing patients. PSV supports spontaneous breathing by supplementing pressure to the airway in response to patient initiated breaths.

  • During PSV, once a breath is initiated, the ventilator pressurizes the airway to a given inspiratory support pressure (Psupport).
  • The "Pro" piece of PSVPro refers to the apnea backup feature. After a clinician-selected period of time, apneic patients are mechanically ventilated with a SIMV pressure mode.

PSV Pro:

  • Assists in overcoming the resistance within the breathing circuit and patient circuit, helping decrease the patient's work of breathing
  • Helps counter the reduction in the patient’s functional residual capacity (FRC) and the decrease in muscle contraction due to the anesthetics
  • May be used with LMAs due to its lower airway pressures
  • With automatic apnea backup mode, uses an SIMV-PC + PSV mode to maintain a minimum minute ventilation in the event the patient stops spontaneously breathing.
  • With adjustable inspiration termination, allows fine-tuning to the patient’s breathing pattern.
  • Supports virtually all spontaneous breaths
  • Uses a decelerating flow pattern (optimizes inspiratory flow)
  • Sustains or enhances the patient’s tidal volume and etCO2 maintenance  


SIMV - Synchronized Intermittent Mandatory Ventilation  

The GE Healthcare 7900 SmartVent advanced feature SIMV (Synchronized Intermittent Mandatory Ventilation) expands the clinical capabilities of our anesthesia delivery portfolio to help meet the needs of your patients.  

With broad patient range capability, an adjustable flow trigger, and trigger window, the SIMV mode helps simplify the work of caring for your spontaneously breathing patients.  

SIMV is designed to provide assured rates and tidal volumes in a manner that supplements the patient’s own spontaneous efforts. By synchronizing to the patient’s effort, the ventilator responds to the patient's breathing needs. 

Synchronized Intermittent Mandatory Ventilation allows the ventilator to sense a patient's own breathing and permit spontaneous breathing between mechanical ventilations, while providing sufficient mandatory breaths should the patient’s own rate fall below a preset value.  

Because of the synchronization provided in SIMV mode, the ventilator will assist a patient’s own breath when that breath falls within the synchronization window as specified by the clinician. These synchronized ventilations can help overcome difficulties experienced when patients attempt to compete with controlled mechanical ventilation.  

During the course of general anesthesia, various agents can affect the overall respiratory rate and volume. Among these are narcotics, inhalation agents, neuromuscular blocking agents, sedatives, or any combination of these drugs. The application of SIMV is well suited to manage these situations providing for a minimum volume.

  • SmartVent tidal volume compensation system works in all mandatory breaths.
  • Adjustable trigger window allows fine-tuning to the patient’s breathing pattern.
  • Respiratory rate is adjustable from 2 to 60 bpm.
  • Provides assured rate and tidal volume for a minimum minute ventilation
  • Automatic synchronization with mandatory breaths
  • Improved synchronization of breaths helps the ventilator respond to the patient's breathing needs.   



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