| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Anesthesia system absorber | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Carbon dioxide absorbent | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Airway pressure alarm | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia unit antihypoxia device | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia workstation antihypoxia unit | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia workstation common gas outlet | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia workstation gas delivery unit | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia workstation application software | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia workstation ventilator | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Enclosed-atmosphere inspired oxygen monitor, line-powered | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Breathing circuit bag, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Breathing circuit bag, single-use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Breathing circuit tube | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Tube/mask breathing circuit connector, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Tube/mask breathing circuit connector, single-use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Y-piece breathing circuit connector, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Y-piece breathing circuit connector, single-use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthetic gas scavenging unit | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia/respiratory gas flowmeter | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia information system | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia information system application software | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia vaporizer tester | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia breathing tube holder | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthetic gas scavenging evacuation tubing | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Pressure relief valve, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Pressure relief valve, single-use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Positive end expiratory pressure valve, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia ventilator | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Enclosed-atmosphere inspired oxygen monitor, battery-powered | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Oxygen low pressure tubing | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Medical air low pressure tubing | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Mechanical expiratory valve, reusable | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Nitrous oxide low pressure tubing | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Positive end expiratory pressure valve, single use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Mechanical expiratory valve, single-use | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia breathing circuit circulator | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Airway pressure/oxygen monitor | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Radio-frequency identification expiratory valve | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Universal tube holder, sterile | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Clinical data collection/management information system application software | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Automated anesthesia recorder | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Ventilator anesthetic agent control unit | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Nitrous oxide analyzer | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Universal tube holder, non-sterile | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia system leakage tester | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Calibration gas cylinder regulator | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia depth simulator | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Gas line connection reference standard | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Gas volume reference standard | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Fire safety valve | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthetic gas absorption/desorption device | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Respiratory gas thermometer | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Breathing circuit multi-parameter sensor | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Heat/moisture exchanger/microbial filter, non-sterile | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Medical gas delivery line filter, respiratory | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  | 
| Anesthesia vaporizer | Is a | False | Device associated with anesthesia systems | Inferred relationship | Existential restriction modifier |  |