Method for performing intravascular cardiac surgery

• US 8,613,777 B2
• Filed: 09/11/2008
• Issued: 12/24/2013
• Est. Priority Date: 02/06/1999
• Status: Expired due to Fees

• Current Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Original Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Inventors: Siess, Thorsten, Flameng, Willem
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): Blatt, Eric
• Application Number:
  US12/208,879
• Publication Number:
  US 20090024212A1
• Time in Patent Office: 1,930 Days
• Field of Search: 623/2.11, 623/1.26
• US Class Current: 623/26
• 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 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2433 using balloon catheter
• 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 60/237 the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
• CPC Class Codes: A61M 60/865 Devices for guiding or inserting pumps or pumping devices into the patient's body
• CPC Class Codes: A61M 60/896 having flexible or resilient parts, e.g. flap valves

Abstract

For the treatment of an insufficient cardiac valve or a cardiac valve with a stenosis, a device is provided that comprises a micro axial pump (40). The pump portion (14) of the micro axial pump carries a dilating device (18) suitable for pushing open a stenosis in a valve. The dilating device is designed as a high-pressure balloon. During dilation, the micro axial pump (40) operates so that the heart is relieved. With insufficient cardiac valves, a stent (21) is fastened to the dilating device (17), the stent surrounding a flexible cardiac valve prosthesis (20). By dilation, the stent (21) is pressed against the insufficient cardiac valve and the same is passivated. The cardiac valve of the cardiac valve prosthesis is unfolded to assume the function of the natural cardiac valve.

Claims

1. A method for performing intravascular cardiac surgery in a heart having a pressure, a volume and a cardiac output, the method comprising:

providing a micro axial pump fastened to a catheter and having a tubular pump portion with an intake portion and an outlet portion and a dilating device thereon;

providing a flexible cardiac valve prosthesis;

mounting said flexible cardiac valve prosthesis in a folded condition within a tubular expandable stent;

placing said stent on said tubular pump portion such that said cardiac valve is situated on said dilating device;

positioning said micro axial pump in the aortal valve of a patient heart such that said intake portion is within the left ventricle of the patient heart, while said outlet is within the aorta;

driving the micro axial pump at a rate sufficient to relieve the heart of excessive blood volume and pressure caused by the positioning of the pump with the stent and valve prosthesis mounted thereto in the aortal valve, wherein the micro axial pump conveys the cardiac output; and

expanding said tubular stent radially, to thereby break open a stenosis in the natural cardiac valve and position and fix said stent with said cardiac valve prosthesis within the aortal valve.

2. The method of claim 1, wherein said cardiac valve prosthesis is a bio prosthesis taken from an animal and comprising a section of a blood vessel including a vascular valve.

3. The method of claim 1, wherein the step of positioning the micro axial pump in the aortal valve of the patient is carried out via the aorta.

4. The method of claim 1, wherein said dilating device comprises a high-pressure balloon that is inflatable with a pressure of at least 1.0 bar.

5. The method of claim 1, wherein said dilating device comprises a high-pressure balloon that is resistant to pressures up to 8.0 bar.