Injectate delivery devices, systems and methods

An injectate delivery device for expanding tissue comprising:

• at least one fluid delivery tube comprising a proximal end, a distal end and a lumen therebetween;
• at least one fluid delivery element in fluid communication with the at least one fluid delivery tube lumen;
• a radially expanding element comprising the at least one fluid delivery element;
• a supply of vacuum constructed and arranged to cause tissue to tend toward the at least one fluid delivery element;
• and
• at least one operator activated control constructed and arranged to:
• expand the radially expandable element;
• and
• activate the supply of vacuum;
• advance the at least one fluid delivery element;
• and
• a force limiting assembly constructed and arranged to limit the force applied to the at least one fluid delivery element during the advancement by the at least one operator activated control, wherein the at least one operator activated control is attached to the at least one fluid delivery tube by the force limiting assembly, and wherein the force limiting assembly comprises at least one spring;
• wherein the device is constructed and arranged to deliver an injectate to target tissue through the at least one fluid delivery element.