Catheter with fluid medication injectors

• US 5,681,281 A
• Filed: 10/10/1995
• Issued: 10/28/1997
• Est. Priority Date: 07/10/1995
• Status: Expired due to Term

• Current Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Original Assignee: Interventional Technologies Incorporated (Boston Scientific Corporation)
• Inventors: Vigil, Dennis M., Barath, Peter
• Primary Examiner(s): DAWSON, GLENN K
• Application Number:
  US08/541,526
• Time in Patent Office: 749 Days
• Field of Search: 604/96-104, 604/164, 604/264, 604/48, 604/49, 604/51-53, 606/1, 606/191-200, 128/898
• US Class Current: 604/103.01
• CPC Class Codes: A61M 2025/105 having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• 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 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A device for injecting medication into a vessel wall includes an inflatable balloon mounted on a catheter. Additionally, a plurality of tubular fluid passageways are longitudinally mounted on the balloon, and a plurality of injectors are mounted on each tubular passageway and in fluid communication therewith. During use of the device, the balloon is first positioned in a vessel. The balloon is then inflated to embed the injectors into the vessel wall. Next, a fluid medicament is introduced through each of the fluid passageways for further infusion through the passageways and through the injectors into the vessel wall.

Claims

1. A device for injecting fluid medication into a wall of a vessel which comprises:

an inflatable balloon having an outer surface;

means for carrying said fluid medication, said carrying means comprising a plurality of tubular fluid passageways being mounted on said outer surface of said balloon;

means for penetrating the vessel wall, said penetrating means being mounted on said carrying means for fluid communication therewith, said penetrating means including at least one injector;

means for inflating said balloon to urge said penetrating means against the vessel wall to penetrate the vessel wall; and

means for infusing said fluid medication in said carrying means through said penetrating means and into the vessel wall.

2. A device as recited in claim 1 wherein said injector comprises:

a base; and

a hollow protrusion having a first end and a second end, said protrusion projecting from said base to establish a fluid channel through said base and through said protrusion, said first end of said protrusion being affixed to said base and said second end formed with a cutting edge.

3. A device as recited in claim 1 wherein said penetrating means comprises a plurality of said injectors.

4. A device as recited in claim 1 wherein said injector is substantially conical shaped.

5. A device as recited in claim 1 further comprising

a plurality of said penetrating means, each said penetrating means being mounted on a respective said tubular fluid passageway.

6. A device as recited in claim 1 wherein said balloon is made of polyethylene terephthalate (PET).

7. A device as recited in claim 1 further comprising a catheter formed with a lumen, said inflatable balloon being mounted on said catheter with said lumen in fluid communication therewith.

8. A device for injecting fluid medication into a wall of a vessel which comprises:

an inflatable balloon;

at least one tubular fluid passageway mounted on an outer surface of said balloon;

at least one injector mounted on an outer surface of said tubular fluid passageway in fluid communication therewith, said tubular fluid passageway being positioned between the injector and the balloon;

means for inflating said balloon to embed said injector into the vessel wall; and

means connectable with said tubular fluid passageway for injecting said medication through said passageway and through said injector into the vessel wall.

9. A device as recited in claim 8 wherein said injector comprises:

a base; and

a hollow protrusion having a first end and a second end, said protrusion projecting from said base to establish a fluid channel through said base and through said body, said first end of said protrusion being affixed to said base and said second end formed with a cutting edge.

10. A device as recited in claim 9 further comprising a plurality of said protrusions projecting from said base.

11. A device as recited in claim 10 further comprising a plurality of injectors.

12. A device as recited in claim 9 wherein said protrusion is substantially cylindrical shaped.

13. A device as recited in claim 9 wherein said protrusion is substantially conical shaped.

14. A device as recited in claim 8 which further comprises:

a guidewire;

a catheter formed with a plurality of lumens, one of said lumens being dimensioned to receive said guidewire therethrough for guiding and positioning said balloon in said vessel;

wherein said inflatable balloon is mounted on said catheter.

15. A device as recited in claim 14 wherein one of said lumens of said catheter establishes fluid communication between said balloon and said inflating means.

16. A device as recited in claim 8 wherein said inflatable balloon is made of polyethylene terephthalate (PET).

17. A method for injecting medication into a wall of a vessel using a device which includes an inflatable balloon, a tubular fluid passageway mounted on an outer surface of the balloon, at least one injector mounted on an outer surface of said tubular fluid passageway, and said injector being in fluid communication with said tubular fluid passageway, said method comprising the steps of:

positioning said balloon in the vessel;

inflating said balloon to embed said injector into the vessel wall; and

selectively injecting medication through said fluid passageway and through said injector into the vessel wall.