Patent ID: 9579462
Date: 2017-02-28
CPC Classifications: A61M

Claim:
1. An elongate shaft capable of injecting fluid into tissue, the elongate shaft comprising: a working shaft comprising a working shaft proximal end, a working shaft distal end, and a working lumen extending between the working shaft proximal end and the working shaft distal end, an injection shaft comprising an injection shaft proximal end, an injection shaft distal end, and at least one needless injection orifice disposed through the sidewall at the injection shaft distal end, the injection shaft moveably disposed within the working lumen, a tissue tensioner removably secured to an outer surface of the injection shaft at the injection shaft distal end and moveable relative to the working lumen, the tissue tensioner comprising an expandable surface capable of exhibiting an expanded state and a non-expanded state, the tissue tensioner in the expanded state being capable of tensioning luminal tissue for injection by the needless injection orifice; and an inflation lumen in communication with the tissue tensioner.