Percutaneous device and method for promoting movement of a bodily fluid

• US 10,293,090 B2
• Filed: 04/24/2015
• Issued: 05/21/2019
• Est. Priority Date: 04/25/2014
• Status: Active Grant

• Current Assignee: Yale University
• Original Assignee: Yale University
• Inventors: Bonde, Pramod, Letzen, Brian
• Primary Examiner(s): Marcetich, Adam
• Application Number:
  US14/695,750
• Publication Number:
  US 20150306291A1
• Time in Patent Office: 1,488 Days
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 60/13 by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/174 discharging the blood to the ventricle or arterial system via a cannula internal to the ventricle or arterial system
• CPC Class Codes: A61M 60/211 using a jet, venturi or entrainment effect for pumping the blood
• CPC Class Codes: A61M 60/237 the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
• CPC Class Codes: A61M 60/414 transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter
• CPC Class Codes: A61M 60/416 transmitted directly by the motor rotor drive shaft
• CPC Class Codes: A61M 60/419 the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
• CPC Class Codes: A61M 60/422 the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
• CPC Class Codes: A61M 60/806 Vanes or blades
• CPC Class Codes: A61M 60/81 Pump housings
• CPC Class Codes: A61M 60/812 Vanes or blades, e.g. static flow guides
• CPC Class Codes: A61M 60/827 Sealings between moving parts
• CPC Class Codes: A61M 60/861 Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body
• CPC Class Codes: A61M 60/865 Devices for guiding or inserting pumps or pumping devices into the patient's body

Abstract

The present invention provides a minimally-invasive percutaneous device that can be positioned within the body of a subject to aid in the movement or pumping of a bodily fluid. In one embodiment, the device comprises a plurality of pump units configured to transform from a first compressed configuration where the pump units are organized in a serial arrangement into a second expanded configuration where the pump units are reorganized into a parallel arrangement.

Claims

1. A device for promoting the movement of a bodily fluid comprising:

at least one pump having;

a sealed motor connected to an impeller, and

a housing defining a fluid inlet and outlet; and

a shell having;

a contiguous and impermeable exterior wall and an interior wall forming a lumen, and one or more anchors positioned on the exterior wall of the shell for displacement from an inner-vessel wall and configured for attachment of the device to a desired implantation site;

wherein the pump is attached to the shell such that at least a portion of the pump and the fluid outlet is positioned within the lumen of the shell, and wherein the shell is configured to increase a velocity of fluid exiting the shell and generate a venturi effect.

2. The device of claim 1, wherein the shell is compressible around at least a portion of the pump.

3. The device of claim 2, further comprising a removable sheath that surrounds the shell and pump when the shell is compressed, such that when the shell and pump are released from the sheath, the shell expands to its relaxed state.

4. The device of claim 1, wherein the shell comprises a frame covered by a solid elastomeric material.

5. The device of claim 1, wherein the inner wall forming the lumen of the shell is tapered.

6. The device of claim 1, wherein a fluid outlet of the pump is positioned within the shell lumen between the sealed motor and the impeller.

7. The device of claim 1, wherein at least one of the interior and exterior wall of the shell is contiguous.

8. A device for promoting the movement of a bodily fluid comprising:

at least one pump comprising;

a sealed motor connected to an impeller, and

a housing defining a fluid inlet and outlet; and

a shell comprising;

a contiguous and impermeable wall forming a lumen, and one or more anchors positioned on the exterior wall of the shell for displacement from an inner-vessel wall and configured for attachment of the device to a desired implantation site;

wherein the pump is positioned within the shell such that at least a portion of the pump and the fluid outlet is positioned within the lumen of the shell.

9. The device of claim 8, wherein the shell is configured to increase a velocity of fluid exiting the shell and generate a venturi effect.

10. A device for promoting the movement of a bodily fluid through a target vessel comprising:

at least one pump comprising;

a sealed motor connected to an impeller, and

a housing defining a fluid inlet and outlet; and

a shell comprising;

a contiguous and impermeable wall forming a lumen, and one or more anchors positioned on the exterior wall of the shell for displacement from an inner-vessel wall and configured for attachment of the device to a desired implantation site;

wherein the pump is positioned within the shell such that at least a portion of the pump and the fluid outlet is positioned within the lumen of the shell, and wherein an inner diameter of the shell is less than an inner diameter of the target vessel.

11. The device of claim 10, wherein the shell is configured to increase a velocity of fluid exiting the shell and generate a venturi effect.

12. The device of claim 10, wherein the wall of the shell is contiguous.