| in u.s. pat | 7 | location |
| further | 4 | manner |
| in pct patent application | 3 | other |
| catheter → be → described | 21 |
| catheter → be known for → example | 7 |
| catheter → be of → the type | 5 |
| catheter → be described for → example | 5 |
| catheter → comprise for → example | 3 |
| negative | neutral | positive |
| 0.077 | 0.862 | 0.061 |
| Raw frequency | 41 |
| Normalized frequency | 0.435 |
| Modifier score | 0.500 |
| Perplexity | 196.364 |