Patent ID: 9615847
Date: 2017-04-11
CPC Classifications: A61B

Claim:
1. A medical device comprising: an insertion member configured to be inserted into a body opening; a needle member, movably coupled to the insertion member, configured to be inserted into the body opening and body tissue comprising a plurality of tissue layers, the needle member including a lumen configured to transfer dissection fluid, a blunt tip located on a distal end of the needle member, and an opening disposed proximate to the blunt tip that is configured to discharge the dissection fluid into a space between the tissue layers; and an injection assembly coupled to the needle member, the injection assembly including a pressure sensor configured to sense tissue pressure, the pressure sensor configured to provide visual feedback to an operator when the sensed tissue pressure drops below a pressure level, the visual feedback indicating that a distal end of the needle member has entered the space.