Devices and methods are provided which involve an improved intra-aortic balloon structure. A safety balloon or safety membrane is mounted within an extension catheter. Helium contained in the safety balloon or membrane can be driven into and out of an intra-aortic balloon by forcing driving fluid into...http://www.google.es/patents/US5413549?utm_source=gb-gplus-sharePatente US5413549 - Devices and methods for efficient intra-aortic balloon pumping
Devices and methods for efficient intra-aortic balloon pumping
