Stent and therapeutic delivery system

United States Patent [w]

Barry

US005857998A [ii] Patent Number: [45] Date of Patent:

5,857,998 Jan. 12, 1999

[54] STENT AND THERAPEUTIC DELIVERY SYSTEM

[75] Inventor: James Barry, Marlboro, Mass.

[73] Assignee: Boston Scientific Corporation, Natick, Mass.

[21] Appl. No.: 867,292
[22] Filed: Jun. 2, 1997

Related U.S. Application Data

[63] Continuation-in-part of Ser. No. 507,844, Jul. 27,1995, Pat. No. 5,685,847, which is a continuation of Ser. No. 268,999, Jun. 30, 1994, Pat. No. 5,439,446.

[51] Int. CI. A61M 29/00

[52] U.S. CI 604/96; 606/194

[58] Field of Search 604/96, 101, 102,

604/52, 53, 103, 104, 49, 157-163, 8, 28;

606/192, 193, 194

[56] References Cited

U.S. PATENT DOCUMENTS

4,423,725 1/1984 Baran et al 128/207.15

4,690,684 9/1987 McGreevy et al 623/12

4,824,436 4/1989 Wolinsky 604/53

4,832,688 5/1989 Sagae et al 604/53

4,922,905 5/1990 Strecker 606/195

4,950,227 8/1990 Savin et al 604/8

5,026,377 6/1991 Burton et al 606/108

5,059,211 10/1991 Stack et al 606/198

5,108.416 4/1992 Ryan et al 606/194

5,135,484 8/1992 Wright 604/28

5,158,548 10/1992 Lau et al 604/96

5,234.457 8/1993 Andersen 606/198

5,242,399 9/1993 Lau et al 604/104

5,254,098 10/1993 Wang 604/96

5,405,322 4/1995 Lennox et al 604/53

5,439,446 8/1995 Barry 604/96

Primary Examiner—-John D. Yasko
Attorney, Agent, or Firm—Pearson & Pearson

[57] ABSTRACT

Apparatus and a method for treating an irregularity in a wall of a vessel of a patient defined by an irregular or afflicted wall portion with adjacent normal wall portions comprises a catheter having a distal end portion for being guided through the vessel to the site of the irregularity. A balloon associated with said distal end portion of the catheter for selective inflating to contact the walls of the vessel urges a stent carried by the distal end portion of the catheter in a constricted condition for passage through the vessel into an expanded form with the stent spanning the afflicted wall portion and contacting the adjacent wall portions. The catheter is formed with lumens for inflating the balloon, for receiving a guidewire for guiding the catheter through the vessel, and for connecting a port in the catheter proximate the afflicted wall portion to enable delivery of a therapeutic agent into the vessel to contact the stent and the irregular wall portion.

26 Claims, 6 Drawing Sheets