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Publication Number
US-12318528-B2
Publication Date
2025-06-03
Expiration Date
Abstract
A medical implant includes a primary tubular member having a first end and a second end and defining a primary longitudinal axis and a primary lumen. The primary tubular member is disposed in an arterial-venous connection. The medical implant also includes a baffle disposed transversely to the primary longitudinal axis within the primary lumen. The baffle defines at least one aperture therethrough.
Core Innovation
The invention relates to a medical implant for controlling blood flow in an arterial-venous connection. A primary tubular member having a primary longitudinal axis and a primary lumen is disposed in the connection, and a disk-like shaped baffle is coupled to an interior surface of the tubular member and disposed transversely within the primary lumen. The baffle defines a plurality of apertures therethrough to control blood flow through the arterial-venous connection.
The baffle is an electromechanical device configured to adjust at least one dimension of the plurality of apertures. An adjustable diaphragm having a plurality of blades is provided, where the blades are radially rotatable to adjust the size of the plurality of apertures. The blades are actuated by one or more actuators via an electromagnet activating permanent magnets coupled to each of the blades.
In a further described embodiment, the baffle is biodegradable or biologically absorbable and degrades after implantation, enlarging a central aperture to progressively increase blood flow and promote vein remodeling and maturation. In another embodiment, the implant uses an electromechanically adjustable aperture implemented with an adjustable diaphragm and radially rotatable blades actuated by electromagnetic elements controlled by an external controller, with adjustment behavior described as automatic using a preprogrammed schedule or by manual input.
Claims Coverage
The partial content identifies one independent claim. The claim covers three inventive features: an implant structure placed in an arterial-venous connection, a transversely disposed disk-like electromechanical baffle with adjustable apertures, and an adjustable diaphragm with radially rotatable blades actuated through electromagnets and permanent magnets.
Arterial-venous placed primary tubular member with primary lumen
A primary tubular member having a first end and a second end defining a primary longitudinal axis and a primary lumen, the primary tubular member disposed in an arterial-venous connection.
Transversely disposed disk-like electromechanical baffle defining apertures
A disk-like shaped baffle coupled to an interior surface of the tubular member, the baffle disposed transversely to the primary longitudinal axis within the primary lumen, the baffle defining a plurality of apertures therethrough, wherein the baffle is an electromechanical device configured to adjust at least one dimension of the plurality of apertures.
Adjustable diaphragm with radially rotatable blades actuated via electromagnet activating permanent magnets
An adjustable diaphragm having a plurality of blades, which are radially rotatable to adjust a size of the plurality of apertures, wherein the plurality of blades are actuated by one or more actuators by an electromagnet activating permanent magnets coupled to each of the blades.
Inventive coverage is directed to an implant configured to be disposed in an arterial-venous connection, using a transversely disposed disk-like electromechanical baffle that defines apertures whose effective dimension is adjustable via an adjustable diaphragm and radially rotatable blades driven by electromagnets activating permanent magnets coupled to the blades.
Stated Advantages
The baffle degrades after implantation, enlarging a central aperture to progressively increase blood flow and promote vein remodeling and maturation.
Documented Applications
Control of blood flow through an arterial-venous connection.
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