CPC A61M 29/02 (2013.01) [A61B 17/24 (2013.01); A61M 2029/025 (2013.01)] | 20 Claims |
1. A balloon dilation device, comprising
an inner guide member defining a first lumen;
a sleeve member defining a second lumen, wherein the inner guide member is at least partially disposed within the second lumen, wherein the sleeve member comprises a balloon;
a rounded tip member coupled to a distal end of a wire that extends through the first lumen of the inner guide member, wherein the rounded tip member is disposed at a position that is distal to a distal tip of the sleeve member and a distal tip of the inner guide member;
a balloon advancement member configured to advance the sleeve member along the inner guide member; and
a spring that is coupled at one end to a proximal end of the wire, wherein the spring is configured to provide a force urging the rounded tip member in a proximal direction,
wherein at least a portion of the balloon is configured to advance off the distal tip of the inner guide member.
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