Patent ID: 6235025
Filing Date: 2001-05-22
Classification: A61B,A61M

Abstract:
A medical device for ablation within a vessel associated with a human heart comprisinga. a catheter,b. a first seal secured to the catheter, to seal the vessel and substantially prevent the flow of blood around the first seal through the vessel,c. a second seal secured to the catheter, located proximal to the first seal,d. an introduction member secured to the catheter, to introduce a conductive medium into a space in the vessel located between the first or second seals, ande. an ablating member secured to the catheter, for ablating tissue within the vessel between the first and second seals,whereby during the ablation procedure, the second seal is structured to encourage a flow of the conductive medium around the second seal away from the space between the first and second seals when conductive medium is introduced into that space, yet substantially limit backflow of blood around the second seal into that space.