Device for intravascular cardiac valve surgery

• US 20050049696A1
• Filed: 10/13/2004
• Published: 03/03/2005
• Est. Priority Date: 02/06/1999
• Status: Abandoned Application

• Current Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Original Assignee: ABIOMED Europe GmbH (Johnson & Johnson)
• Inventors: Siess, Thorsten, Flameng, Willem
• Application Number:
  US10/964,066
• Publication Number:
  US 20050049696A1
• Time in Patent Office: Days
• US Class Current: 623/2.110
• 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

1-4. -4. (canceled):

5. A device for intravascular cardiac valve surgery comprising a micro axial pump fastened to a catheter and having a tubular pump portion, a dilating device for expanding a stent, and a stent carrying a folded flexible cardiac valve prosthesis and being adapted to be expanded by the dilating device.

6. The device of claim 5, wherein the cardiac valve prosthesis is sewn to the stent.

7. The device of claim 5, wherein the cardiac valve prosthesis has a hose-shaped wall that is folded together with a balloon wall of the dilating device.

8. The device of claim 6, wherein the cardiac valve prosthesis has a hose-shaped wall that is folded together with a balloon wall of the dilating device.