Catheter for injecting a fluid or medicine

A catheter for injecting a fluid or medication into hollow organs and body cavities, particularly into coronary vessels and arteries, comprising:

• a front end with a catheter tip adapted to be inserted into arteries and an extracorporal end opposite said catheter tip;
• a catheter stem extending between said catheter tip and said extracorporal end;
• a plurality of injection needles arranged in a bundle and firmly mounted in said catheter stem and having needle points arranged in the catheter tip for relative movement of said tip with respect to said injection needles, said injection needle points, in a retracted position, lying inside the catheter tip and, in an extended position, lying exposed in readiness for applying said fluid or medicine;
• an operating device connected to the extracorporal end of the catheter and an operating wire extending through said bundle and being connected to said catheter tip and being operable to effect movement of said catheter tip;
• and openings formed in the catheter tip allowing the needle points to protrude therefrom laterally as well as forwardly when said catheter tip is retracted;
• said catheter stem including said lumen and said needles being connected to one part of the operating device and the operating wire being connected to the other part thereof, the arrangement being such that movement of one of said two parts in a predetermined direction relative to the other effects a corresponding relative movement between the catheter tip and the injection needles.