A Study Evaluate Aqueduct's Smart External Drain

In this two day clinical trial, subjects will be observed on Day 1 of study during their routine treatment and using their already existing EVD. On Day 2 of study; subjects will be switched to the Smart External Drain for monitoring and management of ICP and CSF

Inclusion criteria

• Stable Neuro - examination on standard EVD assessed as Not Clinically Significant (NCS) by PI or delegated Sub-I prior to study treatment.
• GCS > 13 (minimum of E3V5M5) prior to study treatment.
• Subject must be scheduled to have an EVD placed as part of routine management and for a length of at least 48 hours. (e.g. in the setting of a tumor removal or treatment of hydrocephalus)
• Age 5-80.
• Stable Vital Signs - Blood pressure (Systolic and Diastolic), Heart Rate, Respiratory Rate and weight assessed as not clinically significant (NCS) and afebrile as per PI/Sub-assessment. (Stable Vital signs will be re-assessed again prior to treatment with the SED on Day 2)
• Able to perform and follow simple commands (ex: sit up in bed, lay down in bed)
• Pre-Study CT/MRI Imaging stable per PI Sub-I Assessment post ventriculostomy.
• Able to stand
• Able to obtain consent

Exclusion criteria

• Refractory ICP or needing active ICP management
• Unable to tolerate brief clamping of EVD (<5min)
• Unable to follow simple commands
• Unconscious
• Anticoagulant Therapy
• Known bleeding diathesis
• Scalp Infection
• In the opinion of the Investigator the subject is not a good study candidate