Apparatus and method for replacing aortic valve

• US 6,929,653 B2
• Filed: 12/14/2001
• Issued: 08/16/2005
• Est. Priority Date: 12/15/2000
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Strecter, Richard B.
• Primary Examiner(s): Nguyen, Anhtuan T.
• Assistant Examiner(s): Pantuck, Bradford C
• Application Number:
  US10/022,951
• Publication Number:
  US 20020095116A1
• Time in Patent Office: 1,341 Days
• Field of Search: 606/200, 128/898
• US Class Current: 606/200
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

Apparatus and methods are disclosed for performing beating heart surgery. Apparatus is disclosed comprising a cannula having a proximal end and a distal end; an aortic filter in connection with the cannula, the aortic filter having a proximal side and a distal side; a check valve in connection with the cannula, the check valve disposed on the distal side of the aortic filter; and a coronary artery filter in connection with the cannula, the coronary artery filter having a proximal end and a distal end, and the distal end of the coronary artery filter extending distally away from the distal end of the cannula. A method is disclosed comprising providing apparatus for performing beating heart surgery; deploying the apparatus in an aorta; performing a procedure on the aortic valve; and removing the apparatus from the aorta.

Claims

1. Apparatus for performing beating heart surgery, said apparatus comprising:

a cannula having a proximal end and a distal end, the distal end of said cannula configured for deployment substantially concentrically in an aorta to allow blood flow during systole in a direction proximally from the distal end to the proximal end of said cannula;

an aortic filter mounted on a distal end portion of said cannula for disposition in the aorta;

a check valve mounted on the distal end portion of said cannula and disposed distally of said aortic filter mounted on the distal end portion of said cannula; and

a coronary artery filter connected to said cannula and extending distally of said check valve, a distal portion of said coronary artery filter being configured for deployment upstream of said aortic filter check valve, and said coronary artery filter being configured to make a sealing engagement with a periphery of an aortic valve and cover openings into coronary arteries.

2. Apparatus according to claim 1 wherein said cannula permits delivery of an instrument to a surgical site.

3. Apparatus according to claim 1 wherein the porosity of said coronary artery filter is different from the porosity of said aortic filter.

4. Apparatus according to claim 1 wherein said coronary artery filter has a larger mesh size than said aortic filter.

5. Apparatus according to claim 1 wherein said apparatus is configurable to form a substantial seal with a vascular structure.

6. Apparatus according to claim 5 wherein the vascular structure is an inner surface of an aorta.

7. Apparatus according to claim 1 further comprising at least one impermeable membrane extending longitudinally along a surface of said coronary artery filter.

8. Apparatus according to claim 7 wherein said at least one impermeable membrane is provided with a proximal end and a distal end in an orientation corresponding to the proximal end of said cannula and the distal end of said cannula, respectively, and the proximal end of said at least one impermeable membrane is connected to said coronary artery filter so as to channel blood flow to a coronary artery during diastole.

9. Apparatus according to claim 1 wherein said coronary artery filter forms a perfusion conduit on a surface thereof so as to allow blood flow to a coronary artery during diastole.

10. Apparatus according to claim 9 further comprising an impermeable membrane extending longitudinally along a surface of said coronary artery filter, said impermeable membrane having a proximal end and a distal end in an orientation corresponding to the proximal end of said cannula and the distal end of said cannula, respectively, and the proximal end of said impermeable membrane is connected to said coronary artery filter so as to channel blood flow to the coronary arteries during diastole.

11. Apparatus according to claim 10 wherein said apparatus is configurable to form a substantial seal with an aorta, with an outer surface of said coronary artery filter leaving the perfusion conduit unobstructed.

12. A method for performing beating heart surgery, said method comprising:

providing apparatus comprising;

a cannula having a proximal end and a distal end, the distal end of said cannula configured for deployment substantially concentrically in an aorta to allow blood flow during systole in a direction proximally from the distal end to the proximal end of the cannula;

an aortic filter mounted on a distal end portion of the cannula for disposition in the aorta;

a check valve mounted on the distal end portion of said cannula and disposed distally of the aortic filter mounted on the distal end portion of said cannula; and

a coronary artery filter connected to the cannula, and extending distally of the check valve, a distal portion of the coronary artery filter being configured for deployment upstream of the aortic filter, and extending distally from the distal end of the cannula, the coronary artery filter being configured to cover openings into coronary arteries adjacent a periphery of an aortic valve;

deploying the apparatus in an aorta;

performing a procedure on the aortic valve; and

removing the apparatus from the aorta.

13. A method for performing beating heart surgery, said method comprising:

providing apparatus comprising;

a cannula having a proximal end and a distal end, the distal end of said cannula being configured for deployment substantially concentrically in an aorta to allow blood flow during systole in a direction proximally from the distal end to the proximal end thereof; and

a filter mounted on a distal portion of the cannula, the filter having a proximal end and a distal end, the distal end of the filter extending in a direction away from the distal end of the cannula;

wherein the filter is adapted to make a sealing engagement with a periphery of an aortic valve, and is adapted to cover openings extending into coronary arteries;

deploying the apparatus in an aorta;

performing a procedure on the aortic valve; and

removing said apparatus from the aorta.