Catheter with spray irrigation

A method, comprising:

• inserting a distal end of a flexible insertion tube into a body cavity, the insertion tube containing a channel configured to convey a fluid to the distal end, the distal end comprising a terminal member fixed to the distal end of the insertion tube and comprising a distal tip configured to be brought into contact with tissue in a body cavity, the distal tip having a first diameter and a protruding shoulder surrounding the distal tip and having a second diameter, which is greater than the first diameter;
• and
• directing, via one or more spray ports passing through the shoulder, the fluid from the shoulder toward the tissue so as to irrigate the tissue.

A method, comprising:

• inserting a distal end of a medical probe into a body cavity containing a body fluid;
• and
• directing a flow of an irrigation fluid from the distal end of the medical probe toward a tissue in the body cavity via one or more spray ports in the distal end, wherein a pressure of the irrigation fluid and a size of the one or more spray ports are chosen so that the flow of the irrigation fluid creates a turbulent flow in the body fluid within the body cavity.