Medical devices and methods for providing access to a bodily passage during dilation

A medical device comprising:

• an elongate member having an elongate member proximal end, an elongate member distal end having a distal terminal end, an elongate member axial length extending from the elongate member proximal end to the distal terminal end, a device lumen extending through the elongate member, an inflation lumen, and an elongate member body having a first wall thickness and a second wall thickness, a first portion of the elongate member axial length extending from the distal terminal end toward the elongate member proximal end and a second portion of the elongate member axial length extending from the elongate member proximal end to the first portion of the elongate member axial length, the first wall thickness disposed on the first portion of the elongate member axial length and the second wall thickness disposed on the second portion of the elongate member axial length, the first wall thickness being less than the second wall thickness, the first portion of the elongate member axial length adapted to move between a first, non-expanded configuration and a second, expanded configuration, the distal terminal end having a first outside diameter when in the first, non-expanded configuration and a second outside diameter when in the second, expanded configuration, the second outside diameter being greater than the first outside diameter;
• a balloon disposed entirely on the first portion of the elongate member axial length, the balloon having a balloon chamber in communication with the inflation lumen and adapted to move between a first, deflated configuration and a second, inflated configuration as fluid moves into and out of the balloon chamber;
• and
• a ventilation tube partially disposed within the device lumen, the ventilation tube comprising a ventilation tube proximal end, a ventilation tube distal end, and a ventilation tube body that defines a ventilation tube lumen.

A method of providing access to a bodily passage during dilation of a point of treatment within said bodily passage, the method comprising the steps of:

• introducing a wire guide having a wire guide proximal end and a wire guide distal into said bodily passage such that the wire guide distal end is disposed within said bodily passage;
• advancing the wire guide distal end distal to said point of treatment;
• introducing a medical device having a medical device proximal end and a medical device distal end over the wire guide and into said bodily passage such that the medical device distal end is disposed within said bodily passage, the medical device comprising:
• an elongate member having an elongate member proximal end, an elongate member distal end, an elongate member axial length extending from the elongate member proximal end to the elongate member distal end, a device lumen extending through the elongate member, an inflation lumen, and an elongate member body having a first wall thickness and a second wall thickness, a first portion of the elongate member axial length extending from the elongate member distal end toward the elongate member proximal end and a second portion of the elongate member axial length extending from the elongate member proximal end to the first portion of the elongate member axial length, the first wall thickness disposed on the first portion of the elongate member axial length and the second wall thickness disposed on the second portion of the elongate member axial length, the first wall thickness being less than the second wall thickness, the first portion of the elongate member axial length adapted to move between a first, non-expanded configuration and a second, expanded configuration, the elongate member distal end having a first outside diameter when in the first, non-expanded configuration and a second outside diameter when in the second, expanded configuration, the second outside diameter being greater than the first outside diameter;
• a balloon disposed on at least a portion of the first portion of the elongate member axial length, the balloon having a balloon chamber in communication with the inflation lumen and adapted to move between a first, deflated configuration and a second, inflated configuration as fluid moves into and out of the balloon chamber;
• and
• a ventilation tube partially disposed within the device lumen, the ventilation tube comprising a ventilation tube proximal end, a ventilation tube distal end, and a ventilation tube body that defines a ventilation tube lumen;
• advancing the medical device distally over the wire guide and into said bodily passage such that the medical device distal end is disposed distal to said point of treatment;
• advancing the ventilation tube over the wire guide and through the device lumen such that the ventilation tube distal end is disposed distal to the elongate member distal end;
• passing fluid into the balloon chamber;
• removing a portion of the fluid from the balloon chamber;
• withdrawing the wire guide from said bodily passage;
• and
• withdrawing the medical device from said bodily passage;
• wherein advancement of the ventilation tube distally through the device lumen moves the elongate member from the first, non-expanded configuration to the second, expanded configuration.