Vessel treatment devices

• US 20060271090A1
• Filed: 05/11/2006
• Published: 11/30/2006
• Est. Priority Date: 03/04/2004
• Status: Active Grant

• Current Assignee: Y-Med, Inc. (Becton, Dickinson & Co)
• Original Assignee: Y-Med, Inc. (Becton, Dickinson & Co)
• Inventors: Shaked, Yoav, Solar, Ronald J., Lieber, Glen
• Granted Patent: US 7,780,715 B2
• Time in Patent Office: Days
• US Class Current: 606/192
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12118 for positioning in conjunction with a stent
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22068 Centering
• 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 2002/067 modular
• CPC Class Codes: A61K 31/47 Quinolines; Isoquinolines
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
• CPC Class Codes: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/0186 Catheters with fixed wires, i.e. so called "non-over-the-wire catheters"
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/0108 : using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/0169 : Exchanging a catheter while keeping the guidewire in place
• 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
• CPC Class Codes: A61M 25/1011 : Multiple balloon catheters

Abstract

A catheter system for treating lesions is provided. The system is suitable for treatment of bifurcation lesions, has a low profile and provides substantially predictable translational and rotational positioning. In one embodiment, the system includes a fixed wire balloon catheter and a partially attached guidewire lumen, wherein the guidewire lumen is attached to the catheter at a crotch point. The location of the crotch point is predetermined so as to provide substantially predictable positioning. Several embodiments of the system are described for various types of lesions and vessel configurations.

Claims

1. A catheter system comprising:

a main elongated element having a main elongated element proximal end and a main elongated element distal end;

a balloon positioned at said main elongated element distal end, the balloon comprising a balloon proximal end and a balloon distal end and a fixed wire at said balloon distal end;

an internal core wire positioned internally along at least a portion of said main elongated element; and

an external core wire positioned alongside said balloon, attached to said internal core wire, and attached to said fixed wire at said balloon distal end.

2. The catheter system of claim 1, wherein said internal core wire and said external core wire are comprised of the same wire.

3. The catheter system of claim 1, wherein said external core wire and said fixed wire are comprised of the same wire.

4. The catheter system of claim 1, further comprising an auxiliary elongated element positioned internally along at least a portion of said main elongated element, said auxiliary elongated element having a distal exit point at said main elongated element distal end.

5. The catheter system of claim 4, wherein said distal exit point is positioned at a rotational distance from said external core wire.

6. The catheter system of claim 5, wherein said rotational distance is approximately 180 degrees.

7. The catheter system of claim 4, wherein said auxiliary elongated element further comprises an exit point at a portion of said main elongated element, said exit point for rapid exchange of guidewires.

8. The catheter system of claim 4, further comprising a guidewire positioned through said auxiliary elongated element.

9. The catheter system of claim 1, further comprising multiple external core wires.

10. The catheter system of claim 1, wherein said internal core wire and said external core wire are attached at said main elongated element distal end.

11. A catheter system comprising:

a catheter body having a catheter proximal end and a catheter distal end;

a fixed wire balloon positioned at said catheter distal end and comprising;

a working length portion having a substantially uniform diameter;

a proximal narrowed portion proximal to said working length portion having a smaller diameter than said substantially uniform diameter of said working length portion; and

a distal narrowed portion distal to said working length portion having a smaller diameter than said substantially uniform diameter of said working length portion; and

a guidewire enclosure having an enclosure proximal end and an enclosure distal end, said guidewire enclosure at least partially attached to said catheter at an attachment point, wherein said attachment point is located proximal to said working length portion of said fixed wire balloon.

12. The catheter system of claim 11, wherein said attachment point is at a junction of said working length portion and said proximal narrowed portion.

13. The catheter system of claim 11, wherein said guidewire enclosure is at least partially positioned within said catheter body.

14. The catheter system of claim 11, wherein said attachment point is proximal to said enclosure distal end.

15. The catheter system of claim 11, wherein said attachment point is at said enclosure distal end.

16. The catheter system of claim 11, further comprising a guidewire positionable within said guidewire enclosure.

17. The catheter system of claim 11, wherein at least a portion of said catheter body is comprised of a rigid material thereby providing a rigid control area, and further comprising a substantially rigid core wire positioned alongside said fixed wire balloon and connecting a balloon distal end and said rigid control area.

18. A method for treating a lesion in a vessel, the method comprising:

providing a catheter having a fixed wire balloon and an external core wire positioned alongside the balloon;

introducing said catheter into the lesion; and

inflating the balloon so as to compress the external core wire into the lesion.

19. The method of claim 18, wherein said catheter further comprises an auxiliary elongated element positioned internally within said catheter, the method further comprising advancing an item through said auxiliary elongated element and to a location which is distal to the lesion.

20. The method of claim 19, wherein said item is a guidewire.

21. The method of claim 18, wherein said catheter further comprises an auxiliary elongated element positioned internally within said catheter, the method further comprising advancing a guidewire through said auxiliary elongated element prior to said inflating the balloon.

22. The method of claim 18, wherein said catheter further comprises an auxiliary elongated element positioned internally within said catheter, the method further comprising deflating said balloon and thereafter advancing a guidewire through said auxiliary elongated element.