Piezoelectric-Actuated Fluid-Delivery Devices and Associated Systems and Methods

摘要

Minimally invasive therapeutic fluid delivery devices, systems, and methods are disclosed. In some embodiments, the devices include at least a flexible elongate member with a chamber situated in the distal portion thereof, the chamber having an inlet and an outlet and a piezoelectric actuator that alters a volume of the chamber to eject a portion of the therapeutic fluid. In one embodiment, the device includes an array of piezoelectrically actuatable chambers that can eject a droplet of a drug orthogonally to the length of the flexible elongate member. In another embodiment, the device includes a piezoelectrically actuatable chamber that ejects along the length of the flexible elongate member.

主权项

1. An flexible therapeutic fluid delivery device comprising:
a flexible elongate member having a proximal portion and a distal portion, the flexible elongate member configured for minimally invasive insertion into a patient, a chamber situated in the distal portion of the flexible elongate member, the chamber having an outlet configured to eject a therapeutic fluid; a piezoelectric actuator positioned adjacent to the chamber such that, when actuated, the piezoelectric actuator alters a volume of the chamber to eject a portion of the therapeutic fluid; and a plurality of electrical leads coupled to the piezoelectric actuator.