Bifurcated stent and distal protection system

• US 6,258,115 B1
• Filed: 04/21/1998
• Issued: 07/10/2001
• Est. Priority Date: 04/23/1997
• Status: Expired due to Term

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Artemis Medical, Inc. (Johnson & Johnson)
• Inventors: Dubrul, William Richard
• Primary Examiner(s): Willse, David H.
• Assistant Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US09/063,735
• Time in Patent Office: 1,176 Days
• Field of Search: 606/200, 606/191
• US Class Current: 606/200
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61F 2/0108 Both ends closed, i.e. legs gathered at both ends
• 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 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61F 2210/0019 operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation
• CPC Class Codes: A61F 2210/0023 operated at different temperatures whilst inside or touching the human body, heated or cooled by external energy source or cold supply
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61F 2250/0015 differing in density or specific weight
• CPC Class Codes: A61F 2250/0023 differing in porosity
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body

Abstract

A stent comprising varying porosity'"'"'s for use in vessels with bifurcations or side branches. The stent allows for scaffolding of the stenotic area but still allows for flow into the side branches. A distal protection system is also described.

Claims

1. A device for the removal of particles from a lumen within the body comprising:

an outer, hollow tube having a tube distal end;

an inner member housed within the tube and having an inner member distal end positioned distally of the tube distal end;

a porous braided structure having a distal part secured to the inner member distal end and a proximal part secured to the tube distal end;

the braided structure movable from a contracted condition to an expanded condition by moving at least one of the tube and inner member distal ends towards the other; and

the braided structure adapted to inhibit particles from moving completely through the braided structure when in the expanded condition.

2. The device as in claim 1 where said braided structure has a porous proximal side and a porous distal side.

3. The device as in claim 2 wherein said distal side has smaller sores than the proximal side.

4. The device as in claim 3 wherein said braided structure comprises a section of a tubular, porous braided structure having alternating first and second braided sections, said first braided sections, corresponding to said distal side, having pore sizes smaller than the second braided sections, corresponding to said proximal side.

5. The device as in claim 1 where said porous membrane is an elastic membrane.

6. The device as in claim 1 further comprising a porous membrane in contact with the braided structure, the membrane having smaller pores than the braided structure, whereby the braided structure and the porous membrane therewith are adapted to inhibit particles from moving completely through the braided structure when in the expanded condition.

7. A device for the removal of particles from a lumen within the body comprising:

an outer, hollow tube having a tube distal end;

an inner member housed within the tube and having an inner member distal end positioned distally of the tube distal end;

a porous braided structure having a porous proximal side, a porous distal side, a distal part secured to the inner member distal end and a proximal part secured to the tube distal end;

the braided structure movable from a contracted condition to an expanded condition by moving at least one of the tube and inner member distal ends towards the other;

a porous elastic membrane in contact with the porous distal side of the braided structure, the membrane having smaller pores than the braided structure; and

the braided structure and porous membrane therewith adapted to inhibit particles from moving completely through the braided structure when in the expanded condition.

8. A device for the removal of particles from a lumen within the body comprising:

an outer, hollow tube having a tube distal end;

an inner member housed within the tube and having an inner member distal end positioned distally of the tube distal end;

a porous braided structure having a distal part secured to the inner member distal end and a proximal part secured to the tube distal end;

the braided structure being a temperature-sensitive shape memory material;

the braided structure movable from a contracted condition to an expanded condition by at least one of the following;

heating the temperature-sensitive braided material; and

moving at least one of the tube and inner member distal ends towards the other; and

the braided structure adapted to inhibit particles from moving completely through the braided structure when in the expanded condition.

9. A device for the removal of particles from a lumen within the body comprising:

an outer, hollow tube having a tube distal end;

an inner member housed within the tube and having an inner member distal end positioned distally of the tube distal end;

a porous braided structure having a porous proximal side, a porous and distal side, a distal part secured to the inner member distal end and a proximal part secured to the tube distal end;

the braided structure being a temperature-sensitive shape memory material;

the braided structure movable from a contracted condition to an expanded condition by at least one of the following;

heating the temperature-sensitive braided material; and

moving at least one of the tube and inner member distal ends towards the other;

a porous elastic membrane in contact with the porous distal side of the braided structure, the membrane having smaller pores than the braided structure; and

the braided structure and porous membrane therewith adapted to inhibit particles from moving completely through the braided structure when in the expanded condition.