초록 ▼

A needleless injector including a body at a proximal end, a shaft extending distally from the body, at least one injection orifice at a distal end of the shaft in fluid communication with a fluid chamber at the proximal end, a pressure source in communication with the fluid chamber, and a tissue ten

A needleless injector including a body at a proximal end, a shaft extending distally from the body, at least one injection orifice at a distal end of the shaft in fluid communication with a fluid chamber at the proximal end, a pressure source in communication with the fluid chamber, and a tissue tensioner located at the distal end of the shaft proximal to the injection orifice, wherein the distal end including the tissue tensioner and injection orifice is positionable within a urethral lumen so that when the tissue tensioner is deployed, tissue of the urethra is tensioned at a location for injection of fluid from the injection orifice into the tissue of the urethra.

대표청구항 ▼

1. A needleless injector comprising: a body at a proximal end;a shaft extending distally from the body, the shaft comprising an outer surface extending along its length;at least one injection orifice at a distal end of the shaft in fluid communication with a fluid chamber at the proximal end through

1. A needleless injector comprising: a body at a proximal end;a shaft extending distally from the body, the shaft comprising an outer surface extending along its length;at least one injection orifice at a distal end of the shaft in fluid communication with a fluid chamber at the proximal end through a fluid channel that extends along a longitudinal axis of the shaft, wherein the at least one injection orifice extends in an injection direction from the fluid channel to the outer surface of the shaft;a pressure source in communication with the fluid chamber; andan injection orifice positioning structure located at the distal end of the shaft proximal to the injection orifice, wherein the positioning structure provides pressure when in a deployed configuration to move the at least one injection orifice in the injection direction and into contact with tissue of the urethra;wherein the distal end comprising the injection orifice positioning structure and injection orifice is positionable within a urethral lumen between a first position in which the injection orifice positioning structure is undeployed and a second position in which the injection orifice positioning structure is deployed so that tissue of the urethra is tensioned at a location for injection of fluid from the injection orifice into the tissue of the urethra. 2. The needleless injector of claim 1, wherein deployment of the injection orifice positioning structure comprises expansion of the injection orifice positioning structure. 3. The needleless injector of claim 1, wherein the injection orifice positioning structure comprises a balloon. 4. The needleless injector of claim 1, further comprising a cystoscope operatively positioned relative to the at least one injection orifice. 5. The needleless injector of claim 1, wherein the fluid chamber comprises a volume of ethanol. 6. The needleless injector of claim 5, wherein the fluid chamber further comprises an echogenic substance. 7. The needleless injector of claim 5, wherein ethanol from the fluid chamber and echogenic bubbles are ejectable from the at least one injection orifice. 8. The needleless injector of claim 1, wherein the at least one injection orifice is in a fixed position relative to the shaft. 9. The needleless injector of claim 1, wherein fluid is ejectable from the at least one injection orifice in the injection direction, which is generally parallel to a longitudinal axis of the at least one injection orifice. 10. The needleless injector of claim 3, wherein the balloon comprises a urethral balloon. 11. The needless injector of claim 1, further comprising a fluid path for the delivery of fluid from the fluid chamber, wherein the fluid path comprises: an inner area of the fluid chamber;the fluid channel extending along the longitudinal axis of the shaft; andthe injection orifice,wherein fluid supplied by the fluid chamber is delivered to a body tissue along the fluid path and through the injection orifice.