Guide catheter for dilation system

An apparatus, the apparatus comprising:

• (a) a dilation catheter, wherein the dilation catheter comprises an expandable dilator, wherein the expandable dilator is configured to transition between a non-expanded state and an expanded state, wherein the expandable dilator is configured to fit in an anatomical passageway associated with drainage of a paranasal sinus when the expandable dilator is in the non-expanded state, wherein the expandable dilator is configured to dilate an anatomical passageway associated with drainage of a paranasal sinus when the expandable dilator is in the expanded state;
• and
• (b) a guide catheter, wherein the guide catheter comprises:
• (i) a hollow shaft, wherein the hollow shaft comprises a first inner diameter having a first dimension,
• (ii) an open distal tip, and
• (iii) a bent distal portion extending between the hollow shaft and the open distal tip, wherein the bent distal portion comprises a second inner diameter having a second dimension, wherein the first dimension of the first inner diameter is smaller than the second dimension of the second inner diameter,
• wherein the hollow shaft, the open distal tip, and the bent distal portion together define a lumen, wherein the lumen includes the first and second inner diameters, wherein the dilation catheter is slidably disposed in the lumen.

An apparatus, the apparatus comprising:

• (a) a dilation catheter, wherein the dilation catheter comprises an expandable dilator, wherein the expandable dilator is configured to transition between a non-expanded state and an expanded state, wherein the expandable dilator is configured to fit in an anatomical passageway associated with drainage of a paranasal sinus when the expandable dilator is in the non-expanded state, wherein the expandable dilator is configured to dilate an anatomical passageway associated with drainage of a paranasal sinus when the expandable dilator is in the expanded state;
• and
• (b) a guide catheter, wherein the guide catheter comprises:
• (i) a proximal body,
• (ii) a hollow shaft extending distally from the proximal body, and
• (iii) an open distal tip, wherein the open distal tip has a bulbous configuration,
• wherein the proximal body, hollow shaft, and distal tip together define a lumen, wherein the dilation catheter is slidably disposed in the lumen,
• wherein the proximal body, the hollow shaft, and the open distal tip are made from a metallic material.