Low profile occlusion balloon catheter

Abstract

A low profile occlusion catheter having a guiding atraumatic tip that prevents entry of the balloon into collateral vessels. The occlusion catheter system is particularly well suited for use in vascular occlusion and includes a pressure monitoring line to monitor the degree and state of occlusion.

1 - 57 . (canceled) 
     
     
         58 . An occlusion catheter system for use in vascular occlusion, the occlusion catheter system comprising:
 an inflation catheter member having a proximal inflation member end, a distal inflation member end and a first port at the distal inflation member end, the inflation catheter having an inflation lumen extending from the first port toward the proximal inflation member end;   a proximal hub having a fluid pathway, the proximal hub coupled to the proximal inflation member end such that the fluid pathway communicates with the inflation lumen;   a wire having a proximal wire end and a distal wire end, the wire defining a longitudinal axis and extending longitudinally through the inflation lumen, the wire fixedly coupled to the proximal hub near the proximal wire end;   a distal catheter member coupled to the distal wire end and extending along the longitudinal axis, the inflation catheter member and the distal catheter member positioned in a spaced-apart relationship from one another along the longitudinal axis, thereby defining an intermediate region of the wire, the distal catheter member including an atraumatic tip projecting distally from the distal catheter member; and   a selectively expandable occlusion balloon having a proximal balloon end and a distal balloon end, the proximal balloon end attached to the distal inflation member end and the distal balloon end attached to a proximal end of the distal catheter member, the intermediate region of the wire covered by the occlusion balloon.   
     
     
         59 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip is formed as an extension of the distal catheter member. 
     
     
         60 . The occlusion catheter system of  claim 58 , wherein the distal catheter member includes a distal catheter lumen extending along the longitudinal axis, the distal catheter lumen coupled concentrically about the distal wire end and a proximal end of the atraumatic tip. 
     
     
         61 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes an unconnected end and a generally circular configuration curving proximally and then toward the longitudinal axis, the unconnected end positioned near the longitudinal axis in a relaxed state, the atraumatic tip configured to assume a linear configuration co-axial with the longitudinal axis for delivery. 
     
     
         62 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes a reinforcing member configured to offer additional reinforcement to the atraumatic tip. 
     
     
         63 . The occlusion catheter system of  claim 58 , wherein the wire is constructed of a material selected from the group consisting of nitinol, stainless steel, solid wire reinforced with an outer winding. 
     
     
         64 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip is constructed of a polymer material. 
     
     
         65 . The occlusion catheter system of  claim 58 , wherein the proximal wire end is fixedly coupled to the proximal hub by an adhesive. 
     
     
         66 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes at least two planar opposing surfaces. 
     
     
         67 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes two radiused curved opposing surfaces. 
     
     
         68 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes an angle of curve, the angle of curve being between two hundred seventy degrees and one thousand eighty degrees (270°-1080°). 
     
     
         69 . The occlusion catheter system of  claim 58 , wherein the atraumatic tip includes a radio opaque tip marker. 
     
     
         70 . The occlusion catheter system of  claim 58 , wherein the wire is solid and is constructed of a metal material, the inflation catheter member, the proximal hub, the distal catheter member and the occlusion balloon being constructed of a polymeric material. 
     
     
         71 . An occlusion catheter system for use in vascular occlusion, the occlusion catheter system comprising:
 an inflation catheter member having a proximal inflation member end, a distal inflation member end and a first port at the distal inflation member end, the inflation catheter having an inflation lumen;   a proximal hub having a fluid pathway, the proximal hub coupled to the proximal inflation member end such that the fluid pathway communicates with the inflation lumen;   a solid wire having a proximal wire end and a distal wire end, the solid wire defining a longitudinal axis and extending longitudinally through the inflation catheter member within the inflation lumen, the solid wire fixedly coupled to the proximal hub at the proximal wire end;   a distal catheter member coupled to the distal wire end and extending along the longitudinal axis, the inflation catheter member and the distal catheter member positioned in a spaced-apart relationship from one another along the longitudinal axis, thereby defining an intermediate region of the solid wire, the distal catheter member including an atraumatic tip projecting distally from the distal catheter member, the atraumatic tip including planar opposing surfaces; and   an occlusion balloon having a proximal balloon end, a distal balloon end and a balloon space between the proximal balloon end and the distal balloon end, the proximal balloon end attached to the distal inflation member end and the distal balloon end attached to a proximal end of the distal catheter member near the fist port, the inflation lumen being in communication with the balloon space through the first port, the balloon space surrounding the intermediate region.   
     
     
         72 . The occlusion system of  claim 71 , wherein the solid wire is selected from the group consisting of nitinol and stainless steel. 
     
     
         73 . The occlusion system of  claim 71 , wherein the distal catheter member is constructed of a polymeric material. 
     
     
         74 . The occlusion system of  claim 71 , wherein the atraumatic tip includes a radio opaque tip marker. 
     
     
         75 . The occlusion system of  claim 71 , wherein the atraumatic tip is constructed of a PEBAX material. 
     
     
         76 . The occlusion system of  claim 71 , wherein the distal catheter member includes a distal catheter lumen extending along the longitudinal axis, the distal catheter lumen coupled concentrically about the distal wire end and a proximal end of the atraumatic tip. 
     
     
         77 . The occlusion system of  claim 71 , wherein the atraumatic tip includes a reinforcing member to reinforce the atraumatic tip.