Abstract: In some implementations, an intravascular gas exchange catheter includes (a) a catheter wall extending from a proximal end to a distal end; (b) a first internal lumen coupled to a first lumen port at the proximal end and adjacent at least a portion of the catheter wall, and a second internal lumen coupled to a second lumen port at the proximal end; and (c) an interior space enclosed by the catheter wall and disposed at the distal end, wherein the first internal lumen and second interior lumen are fluidly isolated from each other along a length of catheter wall but fluidly coupled to each other at the interior space. The catheter wall may include a porous material that facilitates diffusion of a target gas through the catheter wall, from or to a space exterior to the catheter wall, to or from the first lumen.

Abstract: In some implementations, an intravascular gas exchange catheter includes (a) a catheter wall extending from a proximal end to a distal end; (b) a first internal lumen coupled to a first lumen port at the proximal end and adjacent at least a portion of the catheter wall, and a second internal lumen coupled to a second lumen port at the proximal end; and (c) an interior space enclosed by the catheter wall and disposed at the distal end, wherein the first internal lumen and second interior lumen are fluidly isolated from each other along a length of catheter wall but fluidly coupled to each other at the interior space. The catheter wall may include a porous material that facilitates diffusion of a target gas through the catheter wall, from or to a space exterior to the catheter wall, to or from the first lumen.

Abstract: An optical probe having a controlled viewing angle lens tip is provided that includes an elastomer lumen, where the elastomer lumen includes internal dividers disposed to separate the elastomer lumen into a plurality of channels, a lens that is sealably attached to a distal end of the elastomer lumen, where each channel is disposed to operate as an independent hydraulic channel, where an angle of the lens relative to a central axis of the elastomer lumen is positioned according to a state of pressure in each independent hydraulic channel, and a hydraulic generator, where the hydraulic generator is disposed to pressurize each hydraulic channel to a defined state as set by a computer input from a to computer.

Abstract: An optical probe having a controlled viewing angle lens tip is provided that includes an elastomer lumen, where the elastomer lumen includes internal dividers disposed to separate the elastomer lumen into a plurality of channels, a lens that is sealably attached to a distal end of the elastomer lumen, where each channel is disposed to operate as an independent hydraulic channel, where an angle of the lens relative to a central axis of the elastomer lumen is positioned according to a state of pressure in each independent hydraulic channel, and a hydraulic generator, where the hydraulic generator is disposed to pressurize each hydraulic channel to a defined state as set by a computer input from a to computer.