Granted Patent
B2
US 12,485,268 · App. 18/131,853 · Granted Dec 2, 2025
Implantable pump system having a rectangular membrane
Inventors:
Louis-Emmanuel Le Duc De Lillers (Paris, FR); Francois Cornat (Paris, FR); Jean-Baptiste Drevet (Paris, FR); Carl N. Botterbusch (Wyomissing, PA); Alexandra Schmidt (Paris, FR)
Assignee:
CorWave SA
View Patent ↗
Loading inventors, assignments & file history…
Abstract
An implantable pump system is provided, including an implantable blood pump suitable for use as a partial support assist device, the system further including an extracorporeal battery and a controller coupled to the implantable pump, and a programmer selectively periodically coupled to the controller to configure and adjust operating parameters of the implantable pump. The implantable pump includes a flexible membrane coupled to an electromagnetic actuator including a magnetic assembly and electromagnetic assembly, so that when the electromagnetic assembly is energized, the electromagnetic assembly causes wavelike undulations to propagate along the flexible membrane to propel blood through the implantable pump. The controller may be programmed by a programmer to operate at frequencies and duty cycles that mimic physiologic flow rates and pulsatility while operating in an efficient manner that avoids thrombus formation, hemolysis and/or platelet activation.
Claims (15)
1 . An implantable blood pump comprising:
a housing comprising an inlet and an outlet and configured to be implanted within a patient such that the inlet and the outlet are in fluid communication with the patient's vasculature;
a membrane disposed within the housing;
a moving magnet disposed within the housing and coupled to the membrane;
a first electromagnetic coil and a second electromagnetic coil each disposed and fixed within the housing and configured to selectively generate at least one magnetic field to cause the membrane to reciprocate to pump blood from the inlet to the outlet; and
at least one guide disposed within the housing and configured to interface with the moving magnet to cause the moving magnet to move linearly as the moving magnet reciprocates between the first electromagnetic coil and the second electromagnetic coil in response to the at least one magnetic field.
2 . The implantable blood pump of claim 1 , wherein the at least one guide comprises at least one post configured to guide the moving magnet up and down the at least one post.
3 . The implantable blood pump of claim 2 , wherein the moving magnet is configured to receive the at least one post and the at least one post is configured to extend through the moving magnet.
4 . The implantable blood pump of claim 1 , further comprising at least one post configured to mechanically interface with the membrane such that the membrane is held in tension between the at least one guide and the at least one post.
5 . The implantable blood pump of claim 1 , wherein the membrane is rectangular in shape.
6 . The implantable blood pump of claim 1 , wherein the first electromagnetic coil is configured to generate a first magnetic field and the second electromagnetic coil is configured to generate a second magnetic field.
7 . The implantable blood pump of claim 1 , wherein the first magnetic field of the first electromagnetic coil has a first polarity that is opposite of a second polarity of the second magnetic field of the second electromagnetic coil.
8 . The implantable blood pump of claim 1 , wherein the housing is configured to guide blood through the inlet, between the first electromagnetic coil and the second electromagnetic coil, along the membrane, and out of the outlet.
9 . The implantable blood pump of claim 1 , wherein the at least one guide is configured to assert a spring force upon the magnetic assembly to bias the magnetic assembly towards a neutral position.
10 . The implantable blood pump of claim 1 , wherein the first electromagnetic coil and the second electromagnetic coil are configured to apply the at least one magnetic field to the magnet assembly to cause the moving magnet to move to induce wave-like deformations in the membrane causing blood to move from the inlet, along the membrane, and out of the outlet.
Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 25, 2024
From: LE DUC DE LILLERS, LOUIS-EMMANUEL; CORNAT, FRANCOIS; DREVET, JEAN-BAPTISTE; BOTTERBUSCH, CARL N.; SCHMIDT, ALEXANDRA
To: CORWAVE SA
Reel/Frame 066252/0048 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Apr 6, 2023
From: LE DUC DE LILLERS, LOUIS-EMMANUEL; CORNAT, FRANCOIS; DREVET, JEAN-BAPTISTE; BOTTERBUSCH, CARL N.; SCHMIDT, ALEXANDRA
To: CORWAVE SA
Reel/Frame 073399/0465 →
Continuity (6)
Provisional Application
62592349
· Nov 29, 2017
Provisional Application
62505023
· May 11, 2017
Provisional Application
62480333
· Mar 31, 2017
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