Balloon occlusion catheter
A balloon catheter includes an outer tube that has an inner surface and an inflation lumen and an inner tube that is disposed within the inflation lumen. The balloon catheter also includes a collar that has a proximal end coupled to a distal end of the outer tube, and a distal end. The collar is coupled to an edge of the distal end or the inner surface of the outer tube. The balloon catheter further includes a luminal space, which is defined by a space between the outer surface of the inner tube and the collar, and a balloon. The balloon has a proximal end coupled to the collar and a distal end coupled to the inner tube.
1 . A balloon catheter comprising:
an outer tube including a distal end, an inner surface, a longitudinal axis, and an inflation lumen;
an inner tube disposed within the inflation lumen of the outer tube, the inner tube including an outer surface and an inner lumen;
a collar having a proximal end and a distal end, the proximal end of the collar coupled to the inner surface of the outer tube at the distal end of the outer tube such that the collar extends outwardly from the inflation lumen of the outer tube;
a luminal space defined by a space between the outer surface of the inner tube and the collar; and
a balloon having a proximal end and a distal end, the proximal end of the balloon being coupled to the collar at the distal end of the outer tube and the distal end of the balloon being coupled to the inner tube,
wherein a coupling element is disposed between the outer tube and the balloon such that a distal most end face of the outer tube is directly coupled to the coupling element which is directly coupled to the balloon,
wherein the collar includes a slot that extends radially around an outer circumference of the collar, wherein the collar is at least partially disposed around the outer surface of the inner tube and the inner tube partially extends through the slot when the inner tube is disposed within the inflation lumen of the outer tube.
2 . The balloon catheter of claim 1 , wherein the slot extends longitudinally throughout a majority of a length of the collar.
3 . The balloon catheter of claim 1 , wherein the slot extends radially approximately 110° around the outer circumference of the collar.
4 . The balloon catheter of claim 1 , wherein the slot is configured to allow the outer surface of the inner tube to move closer to the inner surface of the outer tube.
5 . The balloon catheter of claim 1 , further comprising a coating solution deposited on the inner lumen of the inner tube.
6 . The balloon catheter of claim 5 , wherein the coating solution has a thickness between 1 μm and 25 μm.
7 . The balloon catheter of claim 5 , wherein the coating solution is biocompatible.
8 . The balloon catheter of claim 5 , wherein the coating solution is hydrophilic.
9 . The balloon catheter of claim 5 , wherein the coating solution is hydrophobic.
10 . The balloon catheter of claim 5 , wherein the coating solution is heat cured between 50 and 90 degrees Celsius after deposition on the inner lumen of the inner tube.
11 . The balloon catheter of claim 5 , wherein the coating solution is cured using ultraviolet light after deposition on the inner lumen of the inner tube.
12 . The balloon catheter of claim 5 , wherein the coating solution is cured such that it adheres to the inner lumen of the inner tube.
13 . The balloon catheter of claim 6 , wherein the coating solution is heat cured for a duration of between 10 minutes and 2 hours.
14 . The balloon catheter of claim 5 , wherein the coating solution is diluted by varying dilution percentages between 0% and 50%.
15 . The balloon catheter of claim 5 , wherein a primer solution or a basecoat solution is used as an adhesion promoter between the inner lumen of the inner tube and the coating solution.
16 . The balloon catheter of claim 5 , wherein a cleaning solution is used to prepare the inner lumen of the inner tube for application of the coating solution.
17 . The balloon catheter of claim 16 , wherein the cleaning solution is saline or an equivalent.
18 . The balloon catheter of claim 1 , wherein the outer tube is comprised of nitinol and includes a plurality of slots allowing the outer tube to bend.
19 . The balloon catheter of claim 18 , wherein a width of each of the plurality of slots decreases along a length of the outer tube from a proximal end of the outer tube to the distal end of the outer tube.
20 . The balloon catheter of claim 1 , wherein the outer surface of the inner tube engages with the outer tube to lock the inner tube to the outer tube such that rotation of the outer tube causes rotation of the inner tube.
21 . The balloon catheter of claim 20 further comprising:
an adhesive to lock the inner tube to the outer tube.
22 . The balloon catheter of claim 1 , wherein the balloon includes an interior space that is in fluid communication with the outer tube through the luminal space of the collar.
23 . The balloon catheter of claim 22 , wherein the balloon is inflated with an inflation medium directed into the interior space of the balloon through the luminal space.
24 . The balloon catheter of claim 1 , wherein the collar has an outer diameter that is smaller than an outer diameter of the outer tube.
25 . The balloon catheter of claim 1 , wherein the collar is comprised of nitinol.
26 . The balloon catheter of claim 1 , wherein the inner tube is comprised of braided polyimide.
27 . The balloon catheter of claim 1 , wherein in a deflated state, the balloon has an outer diameter substantially equal to or less than an outer diameter of the outer tube.
28 . The balloon catheter of claim 1 , wherein the inner tube includes an inner diameter having a diameter substantially equal to or greater than 0.020 inches.
29 . The balloon catheter of claim 1 , wherein an outer diameter of the outer tube is substantially equal to or less than 0.040 inches.
30 . The balloon catheter of claim 1 , wherein the inner tube has a wall thickness of approximately 0.003 inches.
31 . The balloon catheter of claim 1 , further comprising an outer jacket disposed over a portion of the outer tube and a portion of the collar, wherein the outer jacket is configured to be disposed over a portion of the balloon.
32 . A balloon catheter comprising:
an outer tube having an outer diameter, an inner surface, a distal end, a longitudinal axis, and an inflation lumen;
an inner tube disposed within the inflation lumen of the outer tube, the inner tube having an inner lumen including a coating solution deposited on the inner lumen;
a collar having an outer diameter that is smaller than the outer diameter of the outer tube, a proximal end, and a distal end, the proximal end of the collar coupled to the inner surface of the outer tube at the distal end of the outer tube such that the collar extends outwardly from the inflation lumen of the outer tube, and the collar having a slot wherein the inner tube is disposed within the slot and partially extends through the slot when the inner tube is disposed within the inflation lumen of the outer tube, and the collar includes a luminal space defined by a space between the inner tube and collar; and
a balloon having a proximal end and a distal end, wherein the proximal end of the balloon is coupled to the collar at the distal end of the outer tube and the distal end of the balloon is coupled to the inner tube, and the balloon includes an interior space that is in fluid communication with the outer tube through the luminal space of the collar allowing the balloon to be inflated from a deflated state to an inflated state,
wherein a coupling element is disposed between the outer tube and the balloon such that a distal most end face of the outer tube is directly coupled to the coupling element which is directly coupled to the balloon.