| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Introduction of catheter into aorta, initial placement | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Selective introduction of catheter into aorta, initial placement | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into spinal canal for infusion of palliative substances | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of nasolacrimal duct | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of cerebral ventricular reservoir, Ommaya or Rickham | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Transcatheter therapy | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into artery | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Thrombectomy with catheter of subclavian artery by thoracic incision | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into pulmonary artery | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous insertion of intra-aortic balloon catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into superior vena cava | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Thrombectomy with catheter of iliac vein by abdominal incision | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of distal catheter in shunt system | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Replacement of cerebral ventricular valve | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Thrombectomy with catheter of subclavian artery by arm incision | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cystourethroscopy with ureteral catheterization and brush biopsy | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Intubation of common bile duct for decompression | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Endoscopic catheterization of pancreatic duct system | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of hepatic vein | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Transcatheter therapy by infusion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into carotid artery | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, combined transseptal and retrograde | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of vein | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of pancreatic cyst | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of cerebral ventricular catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Jugular vein catheterization | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Inferior vena cava catheterization | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Renewal of valve of cerebroventricular shunt | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Open cannulation of vein | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous transluminal cannulation of vein | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Intrauterine catheterization | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier | 1 | 
| Attention to urinary catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Attention to catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Open insertion of central venous catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Indwelling catheter inserted | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Indwelling catheter removed | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Indwelling catheter replaced | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cut-down venous cannulation | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of tympanic ventilation tube from tympanic membrane | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Open insertion of Broviac central venous catheter | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Extracranial ventricular shunt replaced | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both right and left sides of heart NEC | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of left side of heart NEC | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of heart NOS | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of right side of heart NEC | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Other specified catheterization of heart | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of central venous catheter NEC | Direct device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Perinephric catheter, device | Is a | True | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Fluid filled catheter | Is a | True | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Hall catheter | Is a | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Thermistor catheter | Is a | True | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic catheter | Is a | True | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Manipulation of catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Occlusion of catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of subclavian feeding line | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous insertion of ureteric stent | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Urethral irrigation of bladder | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Change of urethral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Manual bladder washout through catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Urethral catheterization for urodynamics | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Instillation of therapeutic substance into bladder | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Intravesical instillation of therapeutic agent for benign disease | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of grommet - procedure | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of peritoneal dialysis catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of indwelling urethral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Intermittent urethral catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Residual catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of shunt from intracranial subdural space | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of subdural-peritoneal shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of subdural-pleural shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Renewal of proximal catheter of ventricular shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Renewal of distal catheter of ventricular shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Change of distal catheter site of ventricular shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ventriculoperitoneal shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Renewal of intracranial pressure transducer | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Renewal of intracranial pressure catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Direct insertion of right atrial catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Direct insertion of left atrial catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Open insertion of right ventricular catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into peripheral vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into dorsal vein of hand | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into superficial forearm vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into antecubital vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into dorsal vein of foot | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into saphenous vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of peripheral venous cannula into scalp vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via internal jugular vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via external jugular vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via subclavian vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via axillary vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via antecubital fossa vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via umbilical vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via femoral vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via long saphenous vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery catheter insertion via jugular vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery catheter insertion via subclavian vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery catheter insertion via femoral vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Portal venous system cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  |