| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Arterial catheter | Is a | True | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Venous catheter | Is a | True | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Insertion of subclavian feeding line | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Heparinizing central line | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Direct insertion of right atrial catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Direct insertion of left atrial catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Open insertion of right ventricular catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 2 | 
| Pulmonary artery catheter insertion via jugular vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery catheter insertion via subclavian vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary artery catheter insertion via femoral vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Pancreatic venous sampling | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Renal venous sampling | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Renal transplant venous sampling | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Venous sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Petrosal sinus sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Simultaneous sampling of bilateral inferior petrosal sinuses | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Jugular vein sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Portal venous sampling catheter | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Hepatic vein sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Adrenal vein sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Gonadal vein sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Parathyroid sampling catheter procedure | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheter without angiogram | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac catheter pressure measurement | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of both left and right heart with graft | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 2 | 
| Catheterization of both left and right heart without graft | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 2 | 
| Embolectomy with catheter of celiac artery by abdominal incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of ulnar artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of axillary artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of femoropopliteal artery by leg incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, by left ventricular puncture | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of renal artery by abdominal incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both left and right heart | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 2 | 
| Cardiac catheterization, right heart and transseptal left | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of right heart | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Cardiac catheterization | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of mesenteric artery by abdominal incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, right heart and left ventricular puncture | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of subclavian artery by thoracic incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of brachial artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of subclavian artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, retrograde, percutaneous | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of subclavian artery by neck incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Arteriovenous shunt for renal dialysis by external cannula | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of innominate artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Insertion of cannula for hemodialysis, vein to vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Insertion of cannula for hemodialysis | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of aortoiliac artery by leg incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Pulmonary catheterization with Swan-Ganz catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, transseptal | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of left heart | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of aortoiliac artery by abdominal incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, right heart and retrograde left | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of carotid artery by neck incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of vascular catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of innominate artery by neck incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of popliteal-tibio-peroneal artery by leg incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of innominate artery by thoracic incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Cardiac catheterization, left heart, combined transseptal and retrograde | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Embolectomy with catheter of radial artery by arm incision | Using | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Jugular vein catheterization | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Inferior vena cava catheterization | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Open insertion of cannula for perfusion of liver | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Open cannulation of vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous transluminal cannulation of vein | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Open insertion of central venous catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Open insertion of Broviac central venous catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Catheterization of both right and left sides of heart NEC | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of left side of heart NEC | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of heart NOS | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Catheterization of right side of heart NEC | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified catheterization of heart | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 1 | 
| Flushing of central line | Indirect device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Flushing of Hickman line | Indirect device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Irrigation of vascular catheter | Indirect device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of celiac artery by abdominal incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of ulnar artery by arm incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of axillary artery by arm incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Pancreatic venous sampling | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Renal venous sampling | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Renal transplant venous sampling | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Venous sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Petrosal sinus sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Simultaneous sampling of bilateral inferior petrosal sinuses | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Jugular vein sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Portal venous sampling catheter | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Hepatic vein sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Adrenal vein sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Gonadal vein sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Parathyroid sampling catheter procedure | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of femoropopliteal artery by leg incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of renal artery by abdominal incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Flushing of Port-a-cath | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier | 2 | 
| Embolectomy with catheter of mesenteric artery by abdominal incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of subclavian artery by thoracic incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of brachial artery by arm incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of subclavian artery by arm incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of subclavian artery by neck incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of innominate artery by arm incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of aortoiliac artery by leg incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  | 
| Embolectomy with catheter of aortoiliac artery by abdominal incision | Direct device | False | Vascular catheter | Inferred relationship | Existential restriction modifier |  |