Retrograde perfusion monitoring and control system
OwnerPaul Gerhard Loubserinventor
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for performing retrograde perfusion, especially during cardiopulmonary bypass operations, including dedicated pediatric scaled apparatus for retrograde perfusion of an adult human organ, organ system, or limb, especially the brain, employing small scale oxygenators and heat exchangers such as are designed for pediatric surgery; also including methods and apparatus for retrograde cerebral perfusion, using nonselective infravalvular cannulation of the superior vena cava, estimating the efficacy of cerebral perfusion by monitoring fluid flow across a valve of an internal jugular vein, modification of inflow pressure and administration of pharmacologic agents, and increasing fluid flow into a brain by occlusion of an inferior vena cava distal to its junction with an azygos vein.
Claims24
Apparatus dedicated to adult retrograde perfusion comprising:
- pediatric scaled perfusion equipment including at least one pump, one fluid reservoir, one pediatric-scaled oxygenator and one pediatric scaled heat exchanger, and which equipment, in combination, has a maximum flow rate of less than or equal to approximately 2 liters per minute;
- a fluid delivery inflow conduit in fluid communication with a downstream side of said pediatric-scaled perfusion equipment;
- and
- first means adapted and sized for establishing fluid communication between an adult-scaled venous vessel and the inflow conduit.
Apparatus for retrograde cerebral perfusion comprising:
- perfusion equipment;
- a fluid delivery inflow conduit in fluid communication with a downstream side of said equipment and adapted to be attached to a human venous vessel;
- and
- a first flow monitoring line adapted to be disposed in a human internal jugular vein distal to an internal jugular vein valve such that fluid passes from the inflow conduit across said internal jugular vein valve to, and past, the first flow monitoring line.
Apparatus for performing retrograde cerebral perfusion comprising:
- perfusion equipment;
- a fluid delivery inflow conduit in fluid communication with a downstream side of said equipment and adapted to be attached to a human venous vessel;
- and
- means, adapted for attaching to a human internal jugular vein distal to an internal jugular vein valve, for detection of an indicia of flow across an internal jugular vein valve, said means in fluid communication with said inflow conduit with communicating fluid passing from the inflow conduit across the internal jugular vein valve to, and past, the means for detection.
Dependencies are inferred from the claim text.