Inflatable cannula and method of using same

• US 6,168,586 B1
• Filed: 08/07/1998
• Issued: 01/02/2001
• Est. Priority Date: 08/07/1998
• Status: Expired due to Term

• Current Assignee: Edwards Lifesciences Corporation
• Original Assignee: Embolx, Inc.
• Inventors: Hahnen, Kevin
• Primary Examiner(s): Kennedy, Sharon
• Assistant Examiner(s): Maynard, Jennifer
• Application Number:
  US09/130,585
• Time in Patent Office: 879 Days
• Field of Search: 604/96-103, 604/118, 604/500, 604/502, 604/507, 604/508, 604/509
• US Class Current: 604/509
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00

Abstract

An expandable lumen cannula which includes an elongate tube having a proximal end, a distal end, an intermediate flexible region, and a lumen therebetween. The cannula further includes a balloon occluder mounted on the distal end of the tube. The intermediate flexible region of the tube further includes an elongate generally cylindrical balloon disposed circumferentially about the flexible region which, upon inflation, expands the luminal diameter of the intermediate region. First and second inflation ports are in fluid communication with the balloon occluder and the cylindrical balloon. The cannula may optionally include a cardioplegia port disposed within the distal region of the tube, proximal the balloon occluder and distal the generally cylindrical balloon. Methods of using such a cannula are also disclosed, particularly to provide cannulation through a minimally invasive port incision, and to thereafter displace the tissues and organs adjacent an intercostal access port upon inflation and expansion of the generally cylindrical balloon.

Claims

1. A method of minimally invasive aortic cannulation, comprising the steps of:

providing an expandable lumen cannula comprising an elongate tube having a proximal end, a distal end, an intermediate flexible region, and a lumen therebetween, the elongate tube further including an elongate generally cylindrical balloon disposed circumferentially about the flexible intermediate region of the tube;

inserting the expandable lumen cannula through a port access, and advancing the distal end of the cannula into the ascending aorta;

positioning the cylindrical balloon within the port access;

inflating the cylindrical balloon, thereby displacing adjacent tissues to increase the outer diameter of the cannula; and

infusing fluid through the lumen of the cannula into the aorta.

2. The method of claim 1, wherein the elongate tube further comprises a balloon occluder mounted on the distal end, and wherein the method further comprises the step of inflating the balloon occluder.

3. The method of claim 2, wherein the fluid is oxygenated blood.

4. The method of claim 3, wherein the oxygenated blood is infused into the aorta distal the balloon occluder.

5. The method of claim 1, further comprising the step of performing cardiopulmonary bypass.

6. The method of claim 1, further comprising the step of performing coronary artery bypass graft.

7. The method of claim 1, further comprising the step of performing a valve replacement.

8. The method of claim 1, further comprising the step of performing thoracic aortic aneurysm repair.

9. The method of claim 1, further comprising the step of performing septal defect repair.