| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Peritoneal dialysis catheter | Is a | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Laparoscopic insertion of permanent intraperitoneal catheter | Direct device | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Laparoscopic insertion of permanent intraperitoneal catheter | Direct device | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Peritoneal catheter submitted as specimen | Specimen source identity | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Peritoneal dialysis catheter adaptor | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal dialysis catheterization kit | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Abdominal fluid shunt system | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal catheter stylet | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal catheter | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal dialysis catheter, acute | Is a | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal dialysis catheter, chronic | Is a | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal dialysis catheter, acute/chronic | Is a | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pleural/peritoneal catheter | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pleural/peritoneal catheter insertion set | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal catheter holder | Is a | False | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Peritoneal catheter submitted as specimen | Specimen substance | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Peritoneal lavage catheter | Is a | True | Peritoneal catheter, device | Inferred relationship | Existential restriction modifier |  |