Device Review performed by Sponsor

Aqueduct's Smart External Drain (SED) will be compared to the current gold standard for temporary CSF management in a hospital setting.

• Evaluate the number of subjects requiring to be switched to a standard of care EVD
• Evaluate subject transport while on the SED
• Evaluate SED system control from initiation of SED through discharge of external drain system

This clinical trial will evaluate Aqueduct's Smart External Drain (SED) upon implementation of ventriculostomy or lumbar drain placement for temporary CSF external management in a hospital setting. Subjects will remain on study from the time of SED application through discharge of the external drain or switch to standard of care extraventricular drain.

Inclusion Criteria:

1. Subject scheduled to have an external drain (includes extra-ventricular and lumbar drains) placed as part of routine management.
2. Age 0-80.
3. Able to obtain consent or legally authorized representative (LAR) consents for subject to be treated on study.

Exclusion Criteria:

1. Anticoagulant therapy (does not include DVT or PE prophylaxis).
2. Known bleeding diathesis.
3. Scalp infection.
4. In the opinion of the Investigator the subject is not a good study candidate.