BIFURCATED AXIALLY FLEXIBLE STENT

• US 20010004706A1
• Filed: 02/24/1999
• Published: 06/21/2001
• Est. Priority Date: 01/26/1996
• Status: Active Grant

• Current Assignee: Cardinal Health Switzerland 515 GmbH (Cardinal Health, Inc.)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: HOJEIBANE, HIKMAT
• Granted Patent: US 6,436,104 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• 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 2002/067 modular
• CPC Class Codes: A61F 2002/30329 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61M 2025/1045 for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations

Abstract

There is disclosed a method of stent placement which comprises first guiding a guidewire through the vasculature. Second, a balloon catheter which contains two guidewire lumens is strung along the guidewire into position at the bifurcation. The distal opening of the second guidewire lumen abuts the proximal end of the bifurcation. Thereafter, a second guidewire is strung through the first balloon catheter and out the distal opening of the second guidewire lumen. Thus, resident in the second bifurcation leg is the second guidewire. Then, a second standard stent delivery balloon catheter is guided along the second guidewire to a position within the bifurcation. Typically, expansion of both stents can be done one right after the other after proper placement of the first and second balloons.

Claims

1. A balloon catheter comprising:

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire lumen.

2. A balloon catheter comprising:

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire lumen; and

the distal opening of the second guidewire lumen contained along the length of the balloon.

3. In combination:

a balloon catheter comprising;

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second balloon catheter comprising;

a second balloon having a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire lumen.

4. In combination:

a balloon catheter comprising;

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second balloon catheter comprising;

a second balloon having a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire lumen; and

a stent comprising a first cylindrical form and a second cylindrical form connected thereto;

said second cylindrical form placed alongside a wall portion of the first cylindrical form so that the stent forms a “

Y”

-shaped opening through the interior portion of the stent; and

said stent having a welded connection at the connection between said first and second cylinders.

5. In combination:

a balloon catheter comprising;

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second balloon having a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire; and

a guidewire useful for passage through said catheter, said guidewire having a pre-formed curve at its tip.

6. A guidewire useful for passage though a balloon catheter, said guidewire having a curve pre-formed at its tip.

7. In combination:

a balloon catheter comprising;

a shaft portion having proximal and distal ends, and a guidewire lumen therethrough, said lumen having a proximal opening and a distal opening, the distal opening located at the distal end of said shaft; and

a balloon connected to said shaft at said shaft distal end, said balloon having proximal and distal ends and a first guidewire lumen therethrough, said balloon guidewire lumen in fluid communication with the guidewire lumen of said shaft, said first balloon guidewire lumen having proximal and distal openings; and

a second guidewire lumen, said second guidewire lumen having a distal opening located proximal to the distal opening of said first guidewire lumen; and

a stent comprising a first cylindrical form and second cylindrical form;

said second cylindrical form placed alongside a wall portion of the first cylindrical form so that the stent forms a “

Y”

-shaped opening through the interior portion of the stent.