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Publication Number
US-12544560-B2
Publication Date
2026-02-10
Expiration Date
Abstract
A minimally invasive system for a wireless circulatory support pump that utilizes a low profile catheter-based techniques and provides temporary and chronic circulatory support depending on the needs of the subject. The system includes a wireless circulatory assist pump, a deployment catheter, and a retrieval catheter for inserting and removing the wireless circulatory assist pump from a subject. The wireless circulatory support pump is relatively easy to place, has high flow rates, and provide improvements in the subject's renal function.
Core Innovation
The invention relates to a wireless circulatory assist pump system for pumping blood through a subject’s aorta while maintaining pulsatility of the subject’s aortic wall. The pump includes a stent cage sized and shaped to allow a highly open flow when placed within the subject’s aorta, and an impeller encaged by the stent cage and connected to the pump to be driven to pump blood through the subject’s aorta.
The system is deployed as a minimally invasive wireless chronic circulatory assist pump and is configured for placement within the aorta via catheter-based deployment and for retrieval. A second portion removably docks to deployment and retrieval catheters using a docking feature including an annular groove, ferromagnetic material, and finger-based catheter engagement with magnetic coupling.
Wireless operation is achieved using an external abdominal belt that communicates with an internal wireless charging circuit, a communications circuit, and a control circuit. The internal circuits are housed in a hermetically sealed first portion, and the hermetically sealed portion uses biocompatible ceramic and biocompatible polymer materials. The stent design emphasizes highly open rounded elements to reduce hemolysis and thrombosis while maintaining aortic pulsatility.
Claims Coverage
The independent claim covers a wireless circulatory assist pump system with a battery, motor, and circuitry, together with a stent-caged impeller sized to provide highly open flow in the aorta while maintaining pulsatility. The independent claim’s core inventive coverage includes one stent/impeller structure and one pump drive arrangement; the listed dependent members further refine connection to catheters and structural sealing and materials, and add an explicit mass ratio constraint in one dependent member.
Wireless circulatory assist pump with battery, motor, and circuitry
A wireless circulatory assist pump comprising a first portion at a first end including a battery at a distal end, a motor at a proximal end, and circuitry interposed between the battery and the motor.
Highly open stent cage sized to maintain pulsatility in the aorta
A stent cage between and connected to the first portion and the second portion, the stent cage of a size and shape to allow a highly open flow when placed within a subject’s aorta while maintaining pulsatility of the subject’s aortic wall.
Stent-encaged impeller with blades configured to pump blood through the aorta
An impeller encaged by the stent cage and connected to the first portion and the second portion, the impeller comprising blades configured to pump blood through the subject’s aorta upon being driven by the motor.
Removable connection of the second end of the second portion to a catheter
The second end of the second portion removably connects to a catheter.
Hermetically sealed canister enclosing motor, circuitry, and battery
A hermetically sealed canister that encloses the motor, circuitry, and battery as the first portion.
Biocompatible ceramic and polymer portions in a hermetically sealed canister
The hermetically sealed canister includes a biocompatible ceramic portion around the circuitry and a biocompatible polymer portion around the battery and the motor.
Mass ratio constraint between pump portions
The system characterized by a second mass-to-first mass ratio within a specified range of about 15:1 to about 2:1.
Overall, the claims coverage centers on a wireless circulatory assist pump architecture with a battery-motor-circuitry drive, combined with a highly open stent cage that maintains aortic wall pulsatility while encaging an impeller whose blades pump blood through the aorta. The dependent members add removable catheter connectivity at the second end, hermetic sealing with biocompatible ceramic and polymer portions, and, in one refinement, a defined mass-to-first-mass ratio.
Stated Advantages
Reduced need to cross the aortic valve.
Maintained aortic pulsatility.
Reduced RPM/power.
Reduced hemolysis.
Reduced AKI.
Chronic operation for months or years.
Documented Applications
Deployment and retrieval of a wireless circulatory assist pump within a subject’s aorta for chronic circulatory assist.
Placement above the renal arteries targeting improved renal function, including renal flow augmentation and urine output improvements reported in sheep and swine testing.
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