US 12,337,139 B2
Medical devices for agent delivery and related methods of use
Andrew Pic, Northboro, MA (US); Collin Murray, Maynard, MA (US); and Laurie A. Lehtinen, Boylston, MA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Dec. 2, 2020, as Appl. No. 17/109,434.
Claims priority of provisional application 62/943,060, filed on Dec. 3, 2019.
Prior Publication US 2021/0162122 A1, Jun. 3, 2021
Int. Cl. A61M 39/24 (2006.01); A61M 5/155 (2006.01); A61M 5/168 (2006.01)
CPC A61M 5/155 (2013.01) [A61M 5/16804 (2013.01); A61M 39/24 (2013.01); A61M 2039/248 (2013.01); A61M 2202/064 (2013.01); A61M 2205/75 (2013.01); A61M 2210/1042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device configured to deliver an agent to a target tissue via a pressurized fluid, the device comprising:
a catheter including a lumen;
an enclosure configured to store an agent, receive a pressurized fluid, and release a combination of the pressurized fluid and the agent; and
a valve defining a chamber positioned downstream of the enclosure to receive the combination of the pressurized fluid and the agent from the enclosure, the valve having a plunger and a rod that are configured to translate relative to the chamber between:
a first configuration in which the plunger is moved into contact with an internal surface of the chamber, thereby preventing a flow of the combination through the lumen such that the agent received within the valve from the enclosure is collected inside the chamber of the valve; and
a second configuration in which the plunger is moved out of contact with the internal surface of the chamber, thereby permitting the flow of the combination through the lumen such that the agent that is collected within the chamber is released from the valve;
wherein the plunger is coupled to the rod inside the chamber, and the rod extends at least partially out of the chamber and through a slider that is slidably coupled to the chamber.