Patent ID: 8840617

Claim:
An interspinous process spacer diagnostic parallel balloon catheter, comprising: an elongate member; a first main expandable member affixed to a distal end of the elongate member; a second main expandable member disposed inside the first main expandable member and affixed to the distal end of the elongate member such that the first main expandable member encases the second main expandable member; a distal expandable member connected to the distal end of the elongate member adjacent to a distal end of the first main expandable member, wherein the distal expandable member is configured to engage the first main expandable member when the distal expandable member and the first main expandable member are in a collapsed configuration or an expanded configuration; a proximal expandable member connected to the distal end of the elongate member adjacent to a proximal end of the first main expandable member; and a plurality of lumens disposed in the elongate member in communication with one or more of the first main expandable member, the second main expandable member, the distal expandable member and the proximal expandable member.