| drain the fluid | 0.59 |
| drain cerebrospinal flu… | 0.51 |
| become blocked | 0.47 |
| relieve the pressure | 0.44 |
| remain in place | 0.41 |
| treat hydrocephalus | 0.41 |
| consist of two catheters | 0.35 |
| allow flow | 0.33 |
| thread under the skin | 0.33 |
| comprise first and seco… | 0.25 |
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| proximal end | 0.46 |
| valve | 0.38 |
| infection | 0.37 |
| large | 0.34 |
| permanent | 0.33 |
| temporary | 0.33 |
| small | 0.33 |
| safe | 0.31 |
| flexible | 0.25 |
| compatible | 0.25 |
| rare | 0.25 |
| oriented parallel | 0.25 |
| defective | 0.16 |
| shape memory materials | 0.30 |
| silicone | 0.25 |
| material | 0.25 |