US 11,097,090 B2Granted

Mechanical assist device

AssigneesPresident and Fellows of Harvard College, Children's Medical Center Corporation

InventorsNikolay V. Vasilyev, Pedro J. del Nido, Tonatiuh M. Lievano Beltran, Erik A. Kraus, Nikhil Mehandru, Evelyn J. Park, Conor J. Walsh, Isaac Wamala, Markus Horvath

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Abstract

Methods and apparatuses relate to an implantable device for providing contractile assistance to an organ. The device may include an actuator and anchors located on either side of the actuator. The anchors engage with oppositely positioned tissue walls of an organ chamber, and provide contractile assistance to the organ, repeatedly, at appropriate times. For example, the device may be implanted within the right ventricle, anchored to the right ventricular free wall and the ventricular septum. The device may function to bring the opposing walls of the ventricle toward one another, synchronized with the pacing of the heart, resulting in an improved ejection fraction of blood from the chamber. In some embodiments, the actuator includes a bladder that is configured to contract upon receiving an inflow of pressurized fluid therein. When the fluid exits therefrom, the bladder relaxes back to an initial, extended state.

Claims31

Dependent claims

A device for providing mechanical assistance to an organ, the device comprising:

a first anchor adapted to engage with a first wall region of the organ;
a second anchor adapted to engage with a second wall region of the organ;
and
an actuator coupled with the first anchor and the second anchor, the actuator adapted to move the first and second anchors relative to one another repeatedly between a contracted position where the anchors are moved toward each other to draw the first and second wall regions of the organ toward each other and an extended position where the anchors are moved away from each other relative to the contracted position to move the first and second wall regions away from each other;
wherein the actuator is adapted to expand along a radial direction and contract along a longitudinal direction to draw the first and second wall regions towards each other and to assist ejection of fluid from a chamber defined at least in part by the first and second wall regions;
wherein the first and second anchors are configured to withstand a force exerted by the actuator during radial expansion and longitudinal contraction;
wherein the first and second anchors have different structures.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/938,680Filed 28 Mar 2018 · continuation
Priority: 27 Jan 2014
Published: US 2018/0318484 A18 Nov 2018
Granted: 24 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

A61M 60/148
Implantable via, into, inside, in line, branching on, or around a blood vessel: in line with a blood vessel using resection or like techniques,…
A61B 17/0401
For suturing wounds; Holders or packages for needles or suture materials: suture anchors, buttons or pledgets, i.e. means for attaching sutures to…
A61M 60/187
Implantable in, on, or around the heart: mechanically acting upon the inside of the patient's native heart, e.g. contractile structures placed…
A61M 60/289
Type thereof: devices for mechanical circulatory actuation assisting the residual heart function by means mechanically acting upon the patient's…

Family

Application61/931,941Us provisional application · filed 27 Jan 2014
PCT/US2015/012886Parent of this continuation · filed 26 Jan 2015
US 2018/0318484 A1Pre-grant publication · published 8 Nov 2018
Application15/114,264Parent of this continuation
US 2017/0000935 A1Published application
US 11,097,090 B2This patent

From the US filing history. Foreign family members aren’t listed.