Patent ID: 6974409
Filing Date: 2005-12-13
Classification: A61M

Abstract:
1. A catheter pump comprising: a catheter having a distal end portion and a proximal end portion, and a channel communicating with said distal end portion for alternatingly passing a fluid in a direction away from said distal end portion towards said proximal end portion and in a direction away from said proximal end portion towards said distal end portion; an inlet passage and an outlet passage proximally spaced at least 8 cm and at most 25 cm from said inlet passage, a valve arrangement for at least restricting outward blood flow via said inlet passage and inward blood flow via said outlet passage; a connection at said proximal end portion for coupling the catheter to a displacement structure; and a displacement structure; said displacement structure communicating with said catheter for alternatingly applying suction for displacing fluid from said catheter to said displacement structure and applying pressure for displacing fluid from said displacement structure to said catheter; and said catheter being dimensioned for positioning said distal end portion in the aorta of a human patient.