Detachable metal balloon delivery device and method

Abstract

A medical device comprising a compressed, inflatable, detachable balloon attached to a catheter and methods of use for occluding blood vessels or treating vascular aneurysms are disclosed. The balloon may be configured such that it can be detached from the catheter by mechanical means. The surface of the balloon may be configured to promote the growth of tissue into the wall of the balloon and to release drugs or pharmacologically active molecules, so that vessel occlusion or the sealing of an aneurysm will be maintained over time.

What is claimed is: 
     
         1 . A medical device, comprising:
 a balloon with a proximal neck, wherein the balloon comprises a single lobe, having a continuous wall with an interior surface defining a void, and an exterior surface, with an opening in the wall that allows for passage of a fluid into the void, and wherein the passage of the fluid into the void of the balloon results in expansion of the balloon; and wherein the balloon remains in an expanded state after the expansion of the balloon and detachment.   
     
     
         2 . The medical device of  claim 1 , wherein the balloon, when expanded, assumes a generally rounded form. 
     
     
         3 . The medical device of  claim 1 , wherein the balloon, when expanded, assumes a generally cylindrical form. 
     
     
         4 . The medical device of  claim 1 , wherein a layer is present on the interior surface of the wall of the balloon, such layer comprising a polymer. 
     
     
         5 . The medical device of  claim 4 , wherein the polymer comprises Parylene. 
     
     
         6 . The medical device of  claim 1 , wherein a diameter of the balloon prior to the expansion is 2-5 Fr. 
     
     
         7 . The medical device of  claim 1 , wherein the balloon comprises a distal neck. 
     
     
         8 . The medical device of  claim 1 , wherein a total thickness of the wall is between 3 μm and 60 μm.