LUMEN REENTRY DEVICES AND METHODS

• US 20080243067A1
• Filed: 03/30/2008
• Published: 10/02/2008
• Est. Priority Date: 03/29/2007
• Status: Active Grant

• Current Assignee: Boston Scientific Medical Device Limited (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Limited (Boston Scientific Corporation)
• Inventors: Rottenberg, Dan, Zakay, Abi
• Granted Patent: US 8,257,382 B2
• Time in Patent Office: Days
• US Class Current: 604/99.01
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• 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: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• CPC Class Codes: A61B 2017/320048 Balloon dissectors
• CPC Class Codes: A61B 2017/320056 Tunnelers
• CPC Class Codes: A61M 2025/0197 for creating an artificial passage within the body, e.g. in order to go around occlusions
• CPC Class Codes: A61M 2025/1065 having a balloon which is inversely attached to the shaft at the distal or proximal end
• CPC Class Codes: A61M 25/0068 Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A device, such as for use with lumen reentry, including a catheter including a balloon disposed at a distal end thereof, the catheter being formed with a first lumen through the balloon for passing therethrough a guidewire and a second lumen for inflation and deflation of the balloon, the catheter and the balloon being sized and shaped for entry between two layers of a wall of a body lumen, wherein upon expansion of the balloon when placed between the layers, a distal portion of the first lumen that passes through the balloon is bent with respect to a portion of the first lumen proximal to the balloon and is directed towards the body lumen.

Claims

1. A device comprising:

a catheter comprising a balloon disposed at a distal end thereof, said catheter being formed with a first lumen through said balloon for passing therethrough a guidewire and a second lumen for inflation and deflation of said balloon, said catheter and said balloon being sized and shaped for entry between two layers of a wall of a body lumen, wherein upon expansion of said balloon when placed between said layers, a distal portion of said first lumen that passes through said balloon is bent with respect to a portion of said first lumen proximal to said balloon and is directed towards said body lumen.

2. The device according to claim 1, wherein said balloon comprises an inverted distal neck.

3. The device according to claim 1, further comprising a guidewire that passes through said first lumen and which is adapted to pierce at least one of the layers to enter said body lumen.

4. The device according to claim 1, further comprising a hypo-tube needle disposed in said first lumen and a guidewire that passes through an internal cavity of said needle, a distal end of said needle being adapted to pierce at least one of the layers to enter said body lumen.

5. The device according to claim 1, wherein a diameter of said balloon is not more than a diameter of said body lumen.

6. The device according to claim 1, wherein a length of said balloon is not more than a diameter of said balloon.

7. The device according to claim 1, wherein said catheter is formed with a pivoting portion proximal to the distal portion upon which said balloon is disposed.

8. The device according to claim 7, wherein said pivoting portion comprises a weakened section having a smaller wall thickness than other portions of said catheter.

9. The device according to claim 7, wherein said pivoting portion comprises a portion made of a flexible material.

10. The device according to claim 7, wherein said pivoting portion comprises a joint.

11. The device according to claim 7, wherein said pivoting portion comprises a section which is softer and easier to bend than the rest of said catheter.

12. The device according to claim 1, wherein said catheter is slidingly disposed in a sheath and the distal portion of said catheter is bendable at a juncture with a distal end of said sheath.

13. The device according to claim 1, wherein a diameter of said balloon is equal to or slightly larger than a diameter of said body lumen.

14. The device according to claim 1, further comprising a second balloon mounted on said catheter proximal to said balloon, said second balloon being inflatable through a third lumen formed in said catheter.