Ommaya reservoir

Also found in: Dictionary, Thesaurus, Encyclopedia.


1. a storage place or cavity.
2. an alternate or passive host or carrier that harbors pathogenic organisms without injury to itself and serves as a source from which other individuals can be infected.
cardiotomy reservoir in cardiopulmonary bypass, a collection chamber for blood suctioned from the heart chambers and pericardium.
continent ileal reservoir an intra-abdominal pouch having a volume of at least 500 ml and a valve created from a portion of the ileum, pulled through the stoma, and lying flat against the abdominal wall; it maintains continence of feces and is emptied by a catheter when full. See also continent ileostomy and kock pouch.
ileoanal reservoir see ileoanal reservoir.
Ommaya reservoir a device implanted in the brain for instillation of medication or removal of fluid through a catheter in a lateral ventricle. When used for the direct administration of chemotherapy, it enhances the concentration of medication in brain tissue.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Om·ma·ya res·er·voir

a plastic container placed in the subgaleal space that is connected to a lateral ventricle or tumor cyst by tubing; it is used to instill medication into, or remove fluid from, the ventricle or tumor cyst.
Farlex Partner Medical Dictionary © Farlex 2012

Ommaya reservoir

Oncology A reservoired device implanted under the scalp with a catheter to a ventricle, used to deliver chemotherapy to the CSF
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


Ayub Khan, U.S. neurosurgeon, 1930–.
Ommaya cerebrospinal fluid reservoir
Ommaya intraventricular reservoir system
Ommaya reservoir
Ommaya reservoir implant material
Ommaya reservoir prosthesis
Ommaya reservoir transensor
Ommaya retromastoid reservoir
Ommaya shunt
Ommaya side-port flat-bottomed reservoir
Ommaya suboccipital reservoir
Ommaya tube
Ommaya ventricular reservoir
Medical Eponyms © Farlex 2012
References in periodicals archive ?
Since then, we keep V-P drainage ventricular catheter with a reservoir or Ommaya reservoir in patients after ETV with previous acute V-P drainage dysfunction.
A neurosurgeon was consulted and was able to successfully place an Ommaya reservoir into the frontal horn of the right lateral ventricle of the brain, four days later, without complication.
Intrathecal chemotherapy can be given by injection into the lower part of the spinal column or, for children especially, a special type of catheter called an Ommaya reservoir may be used.