Ommaya reservoir
Dome-shaped silicone reservoir implanted under the scalp, connected via a catheter through a burr hole into the frontal horn of a lateral ventricle.
How it is used
Repeated CSF access without repeated lumbar punctures, mainly for intrathecal chemotherapy (leptomeningeal disease, CNS leukemia/lymphoma) and CSF sampling; distinct from the already-catalogued (temporary) external ventricular drain catheter and (continuous) VP shunt valve.
Clinical tip
Postoperative infection (typically from gram-positive skin organisms) occurs in 5-8% of patients.
Sources
This entry is part of the Instriq catalog, researched and written per specialty from real web research -- never generated or invented without verification -- and reviewed skeptically and independently before publication. How this catalog is written.
History
Added to the catalog on 2026-10-15.
Dates derived from the project's public version-control history on GitHub, not a live collaborative edit log.