Catheter with side sheath

• US 20010003161A1
• Filed: 12/18/2000
• Published: 06/07/2001
• Est. Priority Date: 11/04/1996
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Charles J. Davidson, Eric Williams, Gil M. Vardi
• Inventors: Williams, Eric, Vardi, Gil M., Davidson, Charles J.
• Granted Patent: US 6,596,020 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61M 25/0116 self-propelled, e.g. autonomous robots A61M25/0122 takes precedence
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires

Abstract

A catheter system for inserting a first guidewire in a primary vessel and a second guidewire in a branch vessel, comprising: a dual lumen catheter having a first guidewire slidably received within a first lumen; and a side sheath received within a second lumen; and a second guidewire slidably received within a lumen of the side sheath.

A method of aligning a side opening in a primary stent in registry with the ostium of a branch vessel, comprising: advancing a first guidewire through a primary vessel such that a distal end of a guidewire extends past an intersection of the primary vessel and the branch vessel; advancing the primary stent over the first guidewire with a dual lumen catheter, the dual lumen catheter having a side sheath received through a second lumen, and a first guidewire received through a first lumen; advancing the side sheath through the second lumen of the dual lumen catheter such that a distal end of the side sheath is positioned at the intersection of the primary vessel and the branch vessel; and advancing a second guidewire through the side sheath and out through the side opening in the primary stent and into the branch vessel, thereby aligning the side opening in the primary stent with the ostium of the branch vessel.

Claims

1. A method of aligning a side opening in a primary stent in registry with the ostium of a branch vessel, comprising:

advancing a first guidewire through a primary vessel such that a distal end of a guidewire extends past an intersection of the primary vessel and the branch vessel;

advancing the primary stent over the first guidewire with a dual lumen catheter, wherein the first guidewire is received within a first lumen of the dual lumen catheter;

positioning a side sheath received through the second lumen of the dual lumen catheter such that a distal end of the side sheath is positioned at the intersection of the primary vessel and the branch vessel; and

advancing a second guidewire through the side sheath and out through the side opening in the primary stent and into the branch vessel, thereby aligning the side opening in the primary stent with the ostium of the branch vessel.

2. The method of

claim 1

, wherein,

the primary stent is at least partially deployed within the primary vessel;

and

the distal end of a second catheter is then received within the at least partially deployed primary stent.

3. The method of

claim 1

, further comprising:

deploying the primary stent within the primary vessel by inflating a first balloon disposed on the dual lumen catheter over the first guidewire.

4. A method of delivering primary and branch stents into an intersection of a primary vessel and a branch vessel, such that a side opening in the primary stent is in registry with the ostium of the branch vessel and such that the branch stent passes through the side opening in the primary stent and into the branch vessel, comprising:

the method of

claim 1

, further comprising;

advancing a branch stent over the second guidewire and out through the side opening in the primary stent and into the branch vessel by a second catheter.

5. The method of

claim 4

, further comprising:

deploying the branch stent within the branch vessel by inflating a second balloon disposed on a second catheter over the second guidewire.

6. The method of

claim 1

, wherein positioning the side sheath through the second lumen of the dual lumen catheter such that the distal end of the side sheath is positioned at the intersection of the primary vessel and the branch vessel is accomplished by:

viewing the position of the distal end of the second catheter under fluoroscopy.

7. The method of

claim 1

, wherein advancing a second guidewire through the side sheath and into the branch vessel is accomplished by:

viewing the position of the distal end of the second guidewire under fluoroscopy.

16. A kit comprising:

an apparatus as in any of

claims 8

to

14

; and

instructions for use setting forth a method as in any of

claims 1

to

7

.

8. A catheter system for inserting a primary guidewire in a primary vessel and a side sheath in a branch vessel, comprising:

a dual lumen catheter;

a first guidewire slidably received within a first lumen of the dual lumen catheter;

a side sheath slidably received within the second lumen of the dual lumen catheter; and

a second guidewire slidably received within a lumen of the side sheath.

10. The apparatus of claims 8 or 9, further comprising:

a first balloon disposed at a distal end of the dual lumen catheter over the first guidewire.

12. The apparatus of

claim 8

, wherein,

the side sheath tapers to a narrow distal end.

13. The apparatus of

claim 8

, wherein,

the distal end of the side sheath is fabricated from a fluoroscopically visible material.

14. The apparatus of claims 8 or 9, wherein,

the interior surface of the second lumen is lubricated with a coating of polyamide and graphite.

15. The apparatus of claims 8 or 9, wherein, the distal end of the second guidewire is fluoroscopically visible.

9. A catheter system for inserting a primary guidewire in a primary vessel and a side sheath in a branch vessel, comprising:

a dual lumen catheter;

a first guidewire slidably received within a first lumen of the dual lumen catheter;

a second catheter slidably received within the second lumen of the dual lumen catheter; and

a second guidewire slidably received within a lumen of the second catheter.

11. The apparatus of

claim 9

, further comprising:

a second balloon disposed at a distal end of the second catheter over the second guidewire.