METHODS AND APPARATUS FOR REDUCING LOCALIZED CIRCULATORY SYSTEM PRESSURE

• US 20130197423A1
• Filed: 12/07/2012
• Published: 08/01/2013
• Est. Priority Date: 04/20/2001
• Status: Active Grant

• Current Assignee: V-Wave Ltd.
• Original Assignee: V-Wave Ltd.
• Inventors: Kesten, Randy, KEREN, Gad
• Granted Patent: US 9,943,670 B2
• Time in Patent Office: Days
• US Class Current: 604/9
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61M 27/002 Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202
• CPC Class Codes: A61M 27/006 Cerebrospinal drainage; Accessories therefor, e.g. valves
• 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 60/165 implantable in, on, or around the heart
• CPC Class Codes: A61M 60/17 inside a ventricle, e.g. intraventricular balloon pumps
• CPC Class Codes: A61M 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/216 including a rotating member acting on the blood, e.g. impeller
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/569 synchronous with the native heart beat
• 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 60/892 Active valves, i.e. actuated by an external force
• CPC Class Codes: A61M 60/894 Passive valves, i.e. valves actuated by the blood
• CPC Class Codes: A61M 60/896 having flexible or resilient parts, e.g. flap valves

Abstract

The present invention is thus directed to methods and apparatus for decreasing pressure in a first portion of a vessel of the cardiac structure of a patient by implanting a shunt communicating with an area outside said first portion, whereby a volume of blood sufficient to reduce pressure in said first portion is released.

Claims

1. A method of decreasing blood pressure in a heart, comprising:

implanting a shunt with a valve element between a left atrium and a right atrium of the heart.

2. The method of claim 1 wherein said implanting includes deploying a tubular element having two ends and two fixation elements disposed at said two ends respectively.

3. The method of claim 1, comprising allowing an amount of blood suitable to substantially reduce blood pressure in the left atrium to flow from said left atrium to said right atrium via said shunt when the pressure differential between said left atrium and said right atrium reaches a threshold.

4. The method of claim 1, comprising puncturing a transseptal hole and wherein implanting the shunt comprises implanting in the punctured transseptal hole.

5. A method of controlled decreasing of blood pressure in a heart chamber, comprising:

providing a valve adapted to operate within a heart; and

implanting the valve in a heart between two heart chambers, such that the valve opens responsive to a pressure level of an exacerbated state of heart failure but not under normal pressures of systole and diastole of a normal heart.

6. The method of claim 5, wherein implanting the valve in the heart comprises implanting between a first atrium and a second atrium.

7. The method of claim 5, wherein implanting the valve in the heart comprises implanting between a left atrium and a right atrium, such that opening the valve allows flow of blood from the left atrium to the right atrium.

8. The method of claim 7, wherein providing the valve comprises providing a valve configured to open only when the pressure in the left atrium is above a predetermined threshold.

9. The method of claim 7, wherein providing the valve comprises providing a valve configured to open only when the pressure in the left atrium is above 12 mmHg.

10. The method of claim 5, wherein implanting the valve comprises implanting in a septum.

11. The method of claim 5, wherein the valve is adapted to allow passage of blood therethrough only during diastole.

12. The method of claim 5, wherein the valve is configured to open when the heart suffers from an exacerbated absolute arterial pressure or an exacerbated differential arterial pressure.

13. The method of claim 5, wherein the valve is configured to close after drainage of an amount of blood sufficient to reduce the mean left atrium pressure by 5 mmHg.

14. The method of claim 5, wherein the valve is configured to open responsive to a differential pressure level between its opposite ends.

15. The method of claim 5, wherein implanting the valve comprises implanting in a percutaneous procedure.

16. The method of claim 5, comprising puncturing a transseptal hole and wherein implanting the valve comprises implanting the valve in the transseptal hole.