High pressure injection catheter systems

Abstract

A needleless fluid injection system including an injection console, an injection chamber in operative communication with the console, an injectate shaft in operative communication with the console, which has an injection lumen extending from a proximal end to a distal end of the shaft, and at least one injection orifice extending through a wall of the injection lumen proximate the distal end of the shaft. The injection lumen can include a sealing cap at its distal end. Alternatively, the system can include an injection plunger having an extending flange portion that is engageable with the console. In another alternative, the system includes an intermediate connector between injection chamber and the injectate shaft. In another embodiment, the system includes a leak management system extending from an outer surface of the injectate shaft.

1 . A needleless fluid injection system comprising:
 an injection console;   an injection chamber in operative communication with the console;   an injectate shaft in operative communication with the console and comprising an injection lumen extending from a proximal end to a distal end of the shaft;   at least one injection orifice extending through a wall of the injection lumen proximate the distal end of the shaft; and   a retention gasket mechanism operatively connected to the injection chamber and the injection console.   
     
     
         2 . The injection system of  claim 1 , wherein the retention gasket mechanism comprises a chamber-receiving portion operatively connected to an end of the injection chamber and a console engagement portion engaged with a cavity of the injection console. 
     
     
         3 . A needleless fluid injection system comprising:
 an injection console;   an injectate shaft in operative communication with the console and comprising an injection lumen extending from a proximal end to a distal end of the shaft;   at least one injection orifice extending through a wall of the injection lumen proximate the distal end of the shaft;   an injection plunge comprising a groove; and   a connector operatively attached to the injection plunger and the injection console.   
     
     
         4 . The injection system of  claim 3 , wherein the console comprises an internal spring that is engageable with the groove of the injection plunger. 
     
     
         5 . A needleless fluid injection system comprising:
 an injection console;   an injectate shaft in operative communication with the console and comprising an injection lumen extending from a proximal end to a distal end of the shaft;   at least one injection orifice extending through a wall of the injection lumen proximate the distal end of the shaft;   at least one injection plunger; and   a leak management system in operative engagement with the injectate shaft.   
     
     
         6 . The injection system of  claim 5 , wherein the leak management system comprises at least one flange extending from the injection plunger. 
     
     
         7 . The injection system of  claim 6 , wherein the at least one flange is angled away from an external body of the injection plunger. 
     
     
         8 . The injection system of  claim 7 , wherein the at least one flange comprises an umbrella flange. 
     
     
         9 . The injection system of  claim 6 , wherein the leak management system comprises multiple flanges extending from the injection plunger. 
     
     
         10 . The injection system of  claim 6 , wherein at least one of the flanges is integrally formed with the injection plunger. 
     
     
         11 . The injection system of  claim 6 , wherein at least one of the flanges is a separate component that is attached to the injection plunger. 
     
     
         12 . The injection system of  claim 5 , further comprising at least one gutter or obstruction extending outwardly from an outer surface of the injection console. 
     
     
         13 . The injection system of  claim 12 , wherein the at least one gutter comprises multiple gutter components spaced from each outer around an opening of the injection console.