Fluid containing endoluminal stent

• US 6,623,519 B2
• Filed: 10/11/2001
• Issued: 09/23/2003
• Est. Priority Date: 09/30/1998
• Status: Expired due to Term

• Current Assignee: Bard Peripheral Vascular Incorporated (Becton, Dickinson & Co)
• Original Assignee: IMPRA Incorporated (Becton, Dickinson & Co)
• Inventors: Banas, Christopher E., Edwin, Tarun J.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): STEWART, ALVIN J
• Application Number:
  US09/975,743
• Publication Number:
  US 20020087209A1
• Time in Patent Office: 712 Days
• Field of Search: 623/1.11, 623/1.19, 623/1.23, 623/1.24, 604/8, 604/9, 604/501-508, 604/6.13, 604/57, 604/104, 604/181, 604/264, 604/523, 606/108, 606/192, 606/193, 606/194, 606/195, 606/191, 606/198, 607/104
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• 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 2210/0042 using a fluid, e.g. circulating
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body

Abstract

An endoluminal stent contains a hollow passageway for the circulation of fluids to treat vascular walls affected with malignant growths or experiencing restenosis. The hollow passageway stent can have one or a plurality of passageways and is configured in a tubular shape with numerous coils, providing an empty tubular lumen through the center of the stent to allow blood flow. The stent is connected to a removable catheter that conducts fluid to the stent. Fluid flow may be regulated by valves incorporated in either the stent and/or the catheter. The stent and catheter are connected to avoid leakage of the fluid. Cryogenic, heated or radioactive fluids are circulated through the stent to treat the affected sites. A method of delivering drugs to the vascular wall is also provided by creating a stent with porous outer walls to allow diffusion of the drug.

Claims

1. A method of treating a vascular wall, comprising the steps of:

providing a closed system for delivering fluid to a body lumen, comprising a stent comprised of non-inflatable non-porous tubing, having at least one fluid flow conduit therein, a removable catheter having a distal end that is sealingly attachable to the fluid flow conduit of the stent, and valve means for controlling the flow of fluid within the system;

attaching the catheter to the stent

inserting the stein and catheter into a body, positioning the stent at a desired location in a body lumen; and

delivering a treatment fluid through the catheter to the stent.

2. The method according to claim 1, wherein the step of delivering a treatment fluid further comprises selecting the treatment fluid from the group consisting of cryogenic fluid, heated fluid and radioactive fluid.

3. The method according to claim 1 comprising the step of further detaching the catheter from the stein, wherein the stent is left within the body lumen.

4. The method according to claim 3 further comprising the step of reattaching the catheter to the stent.