Method and apparatus for injection of gas hydrates

A catheter comprising:

• an elongated cylindrical tube defining a channel for ducting a fluid stream under high pressure;
• one or more exit extending transversely from the channel through the tube, the exit ports each having a diameter which is sufficiently small and a length adequate to convert the fluid stream into spray upon fluid passage therethrough, so that the high pressure to which the fluid is subjected in the channel reduces as the fluid exits the one or more ports and so that the spray may mix with the blood before said spray can decompose or bubbles within said spray can coalesce.

A catheter comprising:

• an elongated cylindrical tube defining a channel for transporting a hydrate suspension under high pressure which is injected into the blood stream;
• a single high resistance exit port for dispersion of the hydrate suspension in multiple directions so that the hydrate suspension may mix with the blood before decomposition or bubble coalescence can occur, said exit port having a diameter which is sufficiently small and a length adequate to reduce the high pressure to which said hydrate suspension is subjected in the channel and to convert said hydrate suspension into spray upon passage of suspension therethrough.