| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Portal venous system cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Portal vein cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Splenic vein cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pancreatic vein cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Superior mesenteric vein cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Inferior mesenteric vein cannula insertion | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous adjustment of ureteric stent | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous replacement of ureteric stent | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Attention to bladder drainage | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Urethral catheter procedure | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Clean intermittent self-catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheter without angiogram | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheter pressure measurement | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheter procedure | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Nephroscopic ureteric stent procedure | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into esophagus, permanent tube type | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cerebrospinal fluid shunt removal | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Instillation of bacillus Calmette-Guerin into the bladder | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cystoscopic indwelling catheterization of ureter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Central venous cannula insertion via jugular vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ventriculoatrial shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ventriculopleural shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of Port-a-cath | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of Port-a-cath | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both left and right heart with graft | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both left and right heart without graft | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of ventricular shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of urinary catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of wound catheter of integument | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of cystostomy | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of ventricular catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of aortic catheter by translumbar route | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of subarachnoid/subdural catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of ureteral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of cerebral ventricular tube | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter in anterior chamber of eye for permanent drainage in glaucoma | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter in spinal canal space, epidural, subarachnoid or subdural, for infusion of therapeutic or palliative substances | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Endoscopy and catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, by left ventricular puncture | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cystourethroscopy with ureteral catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of renal vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Selective introduction of catheter in coronary artery | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Transglottic catheterization of trachea | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of urinary bladder (procedure) | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization for bronchography | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both left and right heart | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Laryngeal catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into artery of extremity | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, right heart and transseptal left | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of right heart | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of umbilical vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of urinary bladder catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Urinary bladder instillation of anticarcinogenic agent | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, right heart and left ventricular puncture | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of bronchus | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of wound catheter of integument | Indirect device | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Dilation of nasolacrimal duct with insertion of tube or stent | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ventricular catheter with synchronous replacement | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, retrograde, percutaneous | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ureterostomy tube and ureteral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of ureterostomy and ureteral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cystostomy with insertion of ureteral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Transtympanic eustachian tube catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of ureter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of indwelling urinary catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of urethral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter, retrograde, brachial artery | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Transnasal eustachian tube inflation with catheterization | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of bladder by indwelling suprapubic catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization with bronchial brush biopsy | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of cannula for hemodialysis, vein to vein | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into spinal canal for infusion of therapeutic substance | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of bronchus with lavage | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Complicated catheterization of bladder | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary catheterization with Swan-Ganz catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of ureteral catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Take-down of cerebral ventricular shunt | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, transseptal | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of left heart | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Replacement of percutaneous drainage catheter with contrast monitoring | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of inferior vena cava | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Venous catheterization for renal dialysis | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter for central venous pressure monitoring | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Closure of cystostomy | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of eustachian tube | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, right heart and retrograde left | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of catheter from middle ear | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into vertebral artery | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into common bile duct | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of ventricular catheter | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of cystostomy tube | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into aorta, initial placement | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Change of cystostomy tube | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Selective introduction of catheter into aorta, initial placement | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into spinal canal for infusion of palliative substances | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of nasolacrimal duct | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of cerebral ventricular reservoir, Ommaya or Rickham | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Insertion of catheter into artery | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  | 
| Introduction of catheter into pulmonary artery | Using | False | Catheter, device | Inferred relationship | Existential restriction modifier |  |