초록 ▼

A method and apparatus for the percutaneous placement of gastro-intestinal tubes, the apparatus comprising a longitudinal penetration device; a hollow, tapered dilator; and a sheath having a central lumen extending therethrough. The penetration device is placed within the sheath, pushed distally to

A method and apparatus for the percutaneous placement of gastro-intestinal tubes, the apparatus comprising a longitudinal penetration device; a hollow, tapered dilator; and a sheath having a central lumen extending therethrough. The penetration device is placed within the sheath, pushed distally to penetrate the target organ, and then removed from the sheath. After the penetration device is removed, the dilator is inserted into the central lumen of the sheath until it penetrates the target organ, so that the sheath and the penetration are radially dilated as the dilator passes through the sheath. The sheath is then pulled in the proximal direction to counter-balance the distal insertion force. A gastro-intestinal tube is inserted into the hollow center, and pushed distally until it exits the distal end of the dilator. The dilator and sheath are then removed from the target organ.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for percutaneously placing a gastro-intestinal tube within a target organ comprising:a hollow dilator having a distal tapered section formed of longitudinal fingers, and an untapered tubular section proximal thereto, wherein the longitudinal fingers of the di

[ What is claimed is:] [1.] An apparatus for percutaneously placing a gastro-intestinal tube within a target organ comprising:a hollow dilator having a distal tapered section formed of longitudinal fingers, and an untapered tubular section proximal thereto, wherein the longitudinal fingers of the distal tapered section open radially in response to a force applied from inside the hollow center of the dilator;a sheath having proximal and distal ends, and a central lumen extending from the proximal end to the distal end, said sheath having a first inner diameter at the distal end, and a second inner diameter at the proximal end, wherein the second inner diameter is greater than the first inner diameter, and wherein said dilator is receivable within the central lumen of the sheath;a penetration device having proximal and distal ends, and a piercing means on the distal end, wherein said penetration device is receivable within the central lumen of the sheath.