Synchronized intraventricular balloon assistance device

Patent metadata

Field	Value
Publication number	US-9669143-B2
Application number	US-201414772086-A
Country	US
Kind code	B2
Filing date	Mar 3, 2014
Priority date	Mar 5, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

System structured to facilitate a movement of a myocardial wall by pushing such wall with a force originated due to energy harvested by the system from a motion of a ventricular chamber without the use of any external energy. The system includes two pliable storage volumes fluidly interconnected by a passage to form a closed circuit that enables a movement of the fluid from one storage volume to another in response to a user input. Optionally, one of the storage volumes is encased in a cover characterized by a spatially-non-uniform distribution of elastic properties. The method of using the system includes juxtaposition of one of the storage volumes with a ventricular chamber and another of the storage volumes with a targeted myocardial wall to enable reversible flow of fluid within the system during a cardiac cycle.

First claim

What is claimed is:

1. A method for facilitating a movement of a myocardial wall, the method comprising:
transferring a motion of a ventricular chamber to a first balloon disposed there within, the first balloon containing a fluid;
in response to the transferred motion, forming a flow of the fluid from the first balloon through a tubular connector to a second balloon juxtaposed with the myocardial wall;
transferring motion of the second balloon defined by the flow of fluid to the myocardial wall.

2. A method according to claim 1 , wherein the transferring motion of the second balloon includes changing geometry of the second balloon to apply a force to the myocardial wall.

3. A method according to claim 2 , wherein the transferring motion of the second balloon includes transferring motion from the second balloon through a layer of material separating the second balloon from the myocardial wall.

4. A method according to claim 1 , wherein the transferring a motion of a ventricular chamber includes transferring a motion of a ventricular chamber during a systolic portion of a cardiac cycle.

5. A method according to claim 1 , further comprising: during a diastolic portion of a cardiac cycle, transferring a motion of the myocardial wall to the second balloon to direct a flow of the fluid from the second balloon to the first balloon.

6. A ventricular assistance device (VAD) comprising:
a tubular element;
first and second elastic cavities defined by corresponding first and second walls, the first and second cavities being sealingly cooperated with the tubular element at respective ends thereof to establish a closed volume defined by the tubular element and the first and second cavities;
a smooth sac enclosing the second cavity, the sac having compliant and non-compliant sides characterized in that the compliant side is more ductile than the non-compliant side; and
a fluid port in the tubular element, the port providing access to the closed volume.

7. A VAD according to claim 6 , wherein the closed volume defines a closed fluid circuit configured such that fluid, delivered to the closed volume, is enabled to flow between the first and second cavities through the tubular element in response to a user input applied to a cavity.

8. A VAD according to claim 6 , wherein the closed volume contains fluid.

Assignees

• Massachusetts Gen Hospital

Inventors

• Guerrero Jose Luis

Classifications

• A61M1/1074 Primary

  Human Necessities · mapped topic

• A61M2205/0216

  Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking · CPC title

• A61M1/125

  Human Necessities · mapped topic

• A61M1/1024

  Human Necessities · mapped topic

• A61M1/1008

  Human Necessities · mapped topic