| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| High vacuum delivery | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| Low vacuum delivery | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| Trial of vacuum delivery | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| Delivery by vacuum extraction with episiotomy | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| Delivery by Malstrom's extraction with episiotomy | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 4 | 
| Delivery by vacuum extraction | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by Malstrom's extraction | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Vacuum delivery before full dilation of cervix | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified vacuum delivery | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Vacuum delivery NOS | Using | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| High vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Low vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Trial of vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Delivery by vacuum extraction with episiotomy | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by Malstrom's extraction with episiotomy | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by vacuum extraction | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Delivery by Malstrom's extraction | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Vacuum delivery before full dilation of cervix | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 3 | 
| Other specified vacuum delivery | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Vacuum delivery NOS | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by Malstrom's extraction with episiotomy | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Trial of vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Other specified vacuum delivery | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Vacuum delivery NOS | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Vacuum delivery before full dilation of cervix | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by Malstrom's extraction | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Delivery by vacuum extraction | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| High vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Low vacuum delivery | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 2 | 
| Delivery by vacuum extraction with episiotomy | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Delivery by outlet vacuum extraction | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Delivery by mid-vacuum extraction | Using device | True | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified vacuum delivery | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 | 
| Vacuum delivery NOS | Using device | False | Vacuum extractor, device | Inferred relationship | Existential restriction modifier | 1 |