Overview of bioengineering and hydrocephalus: 50 years in 30 ...
Overview of bioengineering and hydrocephalus: 50 years in 30 ...
Overview of bioengineering and hydrocephalus: 50 years in 30 ...
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• Limited options for type <strong>of</strong> control<br />
• Nearly every device is dff differential pressure valve<br />
• Siphon‐control (add‐on or <strong>in</strong>tegrated)<br />
• Adjustable pressure set po<strong>in</strong>t (from all majors)<br />
• A few flow control valves (OSV, Diamond)<br />
• Et Extraord<strong>in</strong>ary failure rates<br />
• 40% by year 1, <strong>50</strong>% by year 2, 98% by year 10<br />
• Obstruction is key cause: proximal (60%), valve (<strong>30</strong>%)<br />
• No sensors, no reliable failure diagnostics, no<br />
monitor<strong>in</strong>g i capability
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