INTRAVASCULAR CATHETER HAVING AN EXPANDABLE INCISING PORTION AND MEDICATION DELIVERY SYSTEM

• US 20170079679A1
• Filed: 12/03/2016
• Published: 03/23/2017
• Est. Priority Date: 09/13/2011
• Status: Active Grant

• Current Assignee: VentureMed Group, Inc.
• Original Assignee: VentureMed Group, Inc.
• Inventors: Pigott, John P.
• Granted Patent: US 10,610,255 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/32075 Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque
• CPC Class Codes: A61B 17/3209 Incision instruments
• CPC Class Codes: A61B 2017/00986 Malecots, e.g. slotted tubes, of which the distal end is pulled to deflect side struts
• CPC Class Codes: A61M 2025/0096 being laterally outward extensions or tools, e.g. hooks or fibres
• CPC Class Codes: A61M 25/0074 Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
• CPC Class Codes: A61M 25/0082 Catheter tip comprising a tool

Abstract

An intravascular device is provided having a catheter tube and an expandable portion including a plurality of struts capable of being moved between an open and a closed position. An incising element is provided on at least one of the struts and has a sharpened edge for creating an incision in atherosclerotic material located within a blood vessel when the expandable portion is in the opened position. A medication delivery device may be located on one or more of the struts and may be configured to deliver a substance to an area of interest.

Claims

1. An intravascular catheter device for the treatment of atherosclerotic material located within a blood vessel comprising:

a flexible catheter tube;

an expandable portion secured to a distal end of said catheter tube and comprising a plurality of struts each defining an outward facing surface, the expandable portion being operable between a closed position, wherein the expandable portion has a first diameter, and an opened position, wherein the expandable portion has a second diameter that is larger than the first diameter;

an incising member provided on and extending from the outward facing surface of at least one of the struts, the incising member extending substantially in parallel with a longitudinal axis of the expandable portion when the expandable portion is in the closed position; and

a medication delivery mechanism located on at least one of the struts and being configured to deliver a substance to the surrounding area.

2. The intravascular catheter device of claim 1 wherein:

the medication delivery mechanism comprises a medication delivery tube positioned to terminate on or near the incising member.

3. The intravascular catheter device of claim 1 wherein:

the medication delivery tube terminates below the incising member.

4. The intravascular catheter device of claim 2 further comprising:

an internal passageway that is connected to the medication delivery tube and travels through the incising member to the surface thereof.

5. The intravascular catheter device of claim 2 further comprising:

an internal passageway that is connected to the medication delivery tube and travels through at least a portion of the incising member; and

a jet positioned at the distal end of the internal passageway and being configured to aerosolize a substance passing therethrough.

6. The intravascular catheter device of claim 5 further comprising:

a pump in communication with the drug delivery tube configured to move a fluid containing a substance therethrough.

7. The intravascular catheter device of claim 6 further comprising:

a reservoir configured to hold the substance.

8. The intravascular catheter device of claim 1 wherein:

the medication delivery mechanism comprises a coating placed on at least one of the incising members.

9. The intravascular catheter device of claim 8 further comprising:

a sheath positioned to provide a substantially watertight seal around the coating when the sheath is in a closed position and to expose the coating when the sheath is in an opened position.

10. The intravascular catheter device of claim 1 wherein:

the incising element has a sharpened edge extending along an upper edge thereof.

11. The intravascular catheter device of claim 1 wherein:

the struts are supported in a cantilevered fashion on the expandable portion so as to be splayed open when in the opened position.

12. An intravascular catheter device for the treatment of atherosclerotic material located within a blood vessel comprising:

a flexible catheter tube;

an expandable portion secured to a distal end of said catheter tube comprising a plurality of struts each defining an outer facing surface and being operable between a collapsed position, wherein the expandable portion has a first diameter, and an expanded position, wherein the expandable portion has a second diameter that is larger than the first diameter;

a flexible inner sleeve disposed within the catheter tube wherein said inner sleeve is supported for sliding movement within the catheter tube;

a tip member connected to said flexible inner sleeve configured for sliding movement and to engage said plurality of struts so as to move the expandable portion between the collapsed position and the expanded position; and

a medication delivery mechanism positioned on at least one of said plurality of struts and being configured to deliver a substance to the surrounding area;

wherein the struts are configured to extend substantially in parallel with a longitudinal axis of the expandable portion when the expandable portion is in the closed position.

13. The intravascular catheter device of claim 12 wherein:

said medication delivery mechanism comprises one or more needles positioned along the outer surface of the flexible catheter tube; and

said needles are configured to move between a retracted position wherein said needles extend along said flexible catheter tube and an extended position wherein said needles further extend along one or more of said plurality of struts.

14. The intravascular catheter device of claim 13 wherein:

said needles are configured to extend beyond said plurality of struts and into the tissue surrounding the blood vessel when in the needles are placed in the extended position.

15. The intravascular catheter device of claim 12 further comprising:

at least one incising element that extends longitudinally along substantially the midline of, and substantially perpendicular from, at least a portion of the outer facing surface of at least one of said plurality of struts, said incising element comprising a sharpened edge positioned along an upper edge thereof.

16. The intravascular catheter device of claim 12 wherein:

said medication delivery mechanism comprises a drug delivery tube positioned to terminate on or near the incising element.

17. The intravascular catheter device of claim 16 further comprising:

an internal passageway that is connected to the drug delivery tube and travels through the incising element to the surface thereof.

18. The intravascular catheter device of claim 16 further comprising:

an internal passageway that is connected to the medication delivery tube and travels through at least a portion of the incising member;

a jet positioned at the distal end of the internal passageway and being configured to aerosolize a substance passing therethrough.

19. The intravascular catheter device of claim 12 wherein:

said medication delivery mechanism comprises a coating placed on at least one of the incising members.

20. An intravascular catheter device for the treatment of atherosclerotic material located within a blood vessel comprising:

a flexible catheter tube;

an expandable portion secured to a distal end of said catheter tube comprising a plurality of struts each defining an outer facing surface and being operable between a collapsed position, wherein the expandable portion has a first diameter, and an expanded position, wherein the expandable portion has a second diameter that is larger than the first diameter;

a flexible inner sleeve disposed within the catheter tube wherein said inner sleeve is supported for sliding movement within the catheter tube;

a handle assembly having a control member located thereon, wherein said control member is in communication with said flexible inner sleeve and said control member is configured to move said flexible inner sleeve;

a tip member connected to said flexible inner sleeve configured for sliding movement and to engage said plurality of struts so as to move the expandable portion between the collapsed position and the expanded position; and

a medication delivery mechanism positioned on at least one of said plurality of struts and being configured to deliver a substance to the surrounding area;

wherein said plurality of struts are configured to extend substantially in parallel with a longitudinal axis of the expandable portion when the expandable portion is in the closed position.