| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Dagger, device | Is a | True | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Dirk, device | Is a | True | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Knife wound | Causative agent | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Penetrating injury caused by knife | Causative agent | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Water jet knife system generator | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Water jet knife system handpiece, reusable | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Water jet knife system handpiece, single-use | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Bleeding time kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Cut-throat razor | Is a | True | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Knife holder | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Knife sharpener | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Incision/drainage kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Adenotome blade, reusable | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Adenotome blade, single-use | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Scalpel blade, reusable | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Scalpel blade, single-use | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Intraosseous infusion kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Urethrotome | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system handpiece | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Sharps container | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Abdominal paracentesis kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Ureterotome | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Endotherapy electrosurgical cystotome electrode | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system handpiece tip | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Cranial microvascular anastomosis kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Cast/plaster knife | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Craniotomy kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Mobile extracorporeal gas exchange system catheter kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Pleural catheter insertion set | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Podiatry kit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Vitrectomy system micro-cutting unit | Is a | False | Knife, device | Inferred relationship | Existential restriction modifier |  | 
| Penetrating injury caused by knife | Causative agent | True | Knife, device | Inferred relationship | Existential restriction modifier | 1 | 
| Knife wound | Causative agent | True | Knife, device | Inferred relationship | Existential restriction modifier | 1 |