Medication dispensing balloon catheter

• US 5,254,089 A
• Filed: 04/02/1992
• Issued: 10/19/1993
• Est. Priority Date: 04/02/1992
• Status: Expired due to Term

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Corporation
• Inventors: Wang, James C.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US07/862,415
• Time in Patent Office: 565 Days
• Field of Search: 604/96, 604/101, 604/104, 606/192, 606/194
• US Class Current: 604/103.02
• 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 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

Abstract

An inflatable medical device for the delivery of medications to an organ in the body including a catheter having a plurality of lumens disposed therein. The distal end of the catheter is adapted to be disposed within a bodily organ. A hollow, inflatable, medication-deliverable balloon is disposed on the distal end of the catheter and the interior of the balloon is in fluid flow relationship with one of the lumens to enable the balloon to be inflated. An array of conduits is disposed within the walls of the balloon for the delivery of medications to predetermined locations within said bodily organ. Another lumen in the catheter shaft is provided to deliver medications to the conduits in the wall of the balloon and an egress for the medications so that they may be dispensed at the site being treated.

Claims

1. An inflatable medical device for the delivery of medications to an organ in the body, said device comprising:

a catheter having a plurality of lumens disposed therein, said catheter having a distal end adapted to be disposed within a bodily organ;

a hollow, inflatable, medication-deliverable balloon defined by walls and having a distal and a proximal end, the proximal end of the balloon being disposed on the distal end of said catheter, the interior of said balloon being in fluid flow relationship with one of said lumens whereby to provide the interior of said balloon with inflation fluids;

a least one conduit for the delivery of medications to predetermined locations within said bodily organ, said conduit being disposed within the wall of said balloon;

means for delivering medications from another of said lumens in said catheter to said conduit;

means for dispensing medications from said conduit to said predetermined locations.

2. The device according to claim 1 wherein there is an array of radial arranged conduits disposed within said balloon, said conduits being spaced from each other within the walls of said balloon and individually segregated from each other so as not to be in fluid flow relationship with each other.

3. The medical device according to claim 2 wherein said conduits are uniformly arrayed and spaced from each other around said balloon.

4. The medical device according to claim 2 wherein said conduits are imperforate over their lengths and terminate in dispensing means disposed at the distal end of said balloon whereby to provide egress for medications from said conduits.

5. The medical device according to claim 2 wherein said balloon and said conduits are of a unitary construction, said conduits being co-extruded in said balloon.

6. The medical device according to claim 1 wherein the dispensing means are disposed on the outer surfaces of said conduits.

7. The medical device according to claim 6 wherein said dispensing means includes perforations on said conduits.

8. An inflatable medical device for intervascular delivery of medications, said device comprising:

an inflatable balloon defined by walls and adapted to receive inflation fluids;

an array of conduits disposed within the walls of said balloon, said conduits extending substantially the entire length of said balloon, said conduits being adapted to deliver medications to predetermined locations within a bodily organ;

means to inflate said balloon and means to deliver medications to said to said conduits;

means to dispense medications from said conduits to said bodily organ;

9. The medical device according to claim 8 wherein said conduits are arranged around said balloon, said conduits being spaced from each other on said balloon and individually segmented from each other so as not to be in fluid flow relationship with each other.

10. The medical device according to claim 8 wherein said dispensing means are disposed on the outer surfaces of each of said conduits.

11. The medical device according to claim 10 wherein said dispensing means includes perforations on said conduits.

12. The medical device according to claim 8 wherein said conduits are imperforate over their lengths and terminate in apertures disposed at distal ends thereof whereby to provide egress for medications from said balloon.

13. The medical device according to claim 8 wherein said balloon and said conduits are of a unitary construction, said conduits being co-extruded in said balloon.