Formative Usability Assessment of Wireless Thermal Anisotropy Devices Measuring Flow in Cerebrospinal Fluid Shunts
Measurements of shunt flow will be performed non-invasively. This study will generate usability data via observed tasks and comprehension questions to enable future device design improvements.
• Existing ventricular CSF shunt with a region of intact skin overlying the shunt catheter appropriate in size for application of the study device
• Signed informed consent by subject or a parent, legal guardian, health care agent, or surrogate decision maker (according to local statutes)
• Subject or caregiver can clearly communicate and document information in English
• Verbal assent by minors 12 years of age and older who can understand the study and communicate their decision
• Subject is at least 5 years old but not more than 80 years old