| into the hollow anatomical structure | 4 | transitive-object |
| catheter → be used for → infusion | 5 |
| catheter → have → an infusion outlet | 3 |
| catheter → be attached to → expandable infusion segment | 3 |
| negative | neutral | positive |
| 0.146 | 0.818 | 0.036 |
| Raw frequency | 11 |
| Normalized frequency | 0.216 |
| Modifier score | 0.500 |
| Perplexity | 160.417 |