Adjustable implantable devices and associated methods

A method of adjusting a dimension of a shunt anchored between and fluidly coupling a first body region and a second body region of a patient, the method comprising:

• advancing an elongated body through the patient's vasculature and toward the implanted shunt;
• positioning the elongated body within a flowpath extending through the shunt and/or proximate to an opening of the shunt orifice;
• and
• heating, via the elongated body, a shape memory component of the shunt, wherein heating the shape memory component transforms the shunt from a first configuration to and/or toward a second configuration,
• wherein transforming the shunt from the first configuration to and/or toward the second configuration reduces an inner dimension of the shunt associated with the flowpath and/or the shunt orifice while maintaining an outer dimension of the shunt such that the shunt remains anchored between the first body region and the second body region.

A method of adjusting a dimension of an interatrial shunt anchored to a septal wall of a patient and fluidly connecting a left atrium and a right atrium of a patient's heart, the method comprising:

• advancing an elongated body through the patient's vasculature and toward the implanted shunt;
• positioning the elongated body within a flowpath extending through the shunt and/or proximate to an opening of the shunt orifice;
• and
• heating, via the elongated body, a shape memory component of the shunt, wherein heating the shape memory component transforms the shunt from a first configuration to and/or toward a second configuration,
• wherein transforming the shunt from the first configuration to and/or toward the second configuration reduces an inner dimension of the shunt associated with the flowpath and/or the shunt orifice while the shunt remains anchored to the septal wall.