Balloon catheter and stent delivery device

• US 5,735,869 A
• Filed: 10/26/1995
• Issued: 04/07/1998
• Est. Priority Date: 11/30/1994
• Status: Expired due to Term

• Current Assignee: Schneider (Europe) GmbH (Boston Scientific Corporation)
• Original Assignee: Schneider (Europe) GmbH (Boston Scientific Corporation)
• Inventors: Fernandez-Aceytuno, Alfonso Medina
• Primary Examiner(s): Dawson, Glenn K.
• Application Number:
  US08/548,786
• Time in Patent Office: 894 Days
• Field of Search: 604/96-104, 606/1, 606/108, 606/191-200, 600/201, 600/204, 600/207
• US Class Current: 606/194
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61M 2025/1068 having means for varying the length or diameter of the deployed balloon, this variations could be caused by excess pressure
• 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 25/104 used for angioplasty

Abstract

A stent delivery system for a balloon expandable stent includes a balloon catheter with a tubular shaft and an elongated dilatation balloon. The tubular shaft has a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire proximal of the balloon. A sleeve for preventing expansion of balloon segments is mounted on the tubular shaft with a distal end surrounding a portion of the proximal end of the balloon and a proximal end removably attached to a portion of the tubular shaft.

Claims

1. A balloon catheter comprising:

a tubular shaft having a proximal end and a distal end, an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof, a first means secured on the tubular shaft for preventing expansion of balloon segments and a second means on the first means cooperating with a third means on the tubular shaft for adjustably fixing the first means on the tubular shaft at different longitudinal positions wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft and wherein the first means for preventing expansion of balloon segments is either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon.

2. A balloon catheter according to claim 1, wherein the first means for preventing expansion of balloon segments is removably attached to the tubular shaft.

3. A balloon catheter according to claim 1, wherein the first means for preventing expansion of balloon segments is slidably attached to the tubular shaft.

4. A balloon catheter according to claim 1, wherein the first means for preventing expansion of balloon segments comprise a sleeve having proximal and distal ends one of which is surrounding a portion of the tubular shaft in the vicinity of the balloon and the other of which is surrounding a portion of the balloon.

5. A stent delivery system for a balloon expandable stent comprising:

a balloon catheter with a tubular shaft having a proximal end and a distal end, and an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof, a first means secured on the tubular shaft for preventing expansion of balloon segments and a second means on the first means cooperating with a third means on the tubular shaft for adjustably fixing the first means on the tubular shaft at different longitudinal positions wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft, and wherein the first means for preventing expansion of balloon segments is either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon.

6. A stent delivery system according to claim 5, wherein the first means for preventing expansion of balloon segments is removably attached to the tubular shaft.

7. A stent delivery system according to claim 5, wherein the first means for preventing expansion of balloon segments is slidably attached to the tubular shaft.

8. A stent delivery system according to claim 5, wherein the means for preventing expansion of balloon segments comprise a sleeve having proximal and distal ends one of which is surrounding a portion of the tubular shaft in the vicinity of the balloon and the other of which is surrounding a portion of the balloon.

9. A balloon catheter comprising:

a tubular shaft having a proximal end and a distal end, an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof, and means secured on the tubular shaft for preventing expansion of balloon segments wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft and wherein the means for preventing expansion of balloon segments are attached to the tubular shaft either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon;

the means for preventing expansion of balloon segments comprise a sleeve having proximal and distal ends one of which is surrounding a portion of the tubular shaft in the vicinity of the balloon and the other of which is surrounding a portion of the balloon; and

latch means on one of the sleeve or shaft cooperating with catch means on the other of the sleeve or shaft for attaching one end of the sleeve to the portion of the tubular shaft surrounded by that end of the sleeve.

10. A balloon catheter comprising:

a tubular shaft having a proximal end and a distal end, an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof, and means secured on the tubular shaft for preventing expansion of balloon segments wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft and wherein the means for preventing expansion of balloon segments are attached to the tubular shaft either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon; and

elastic balloon jacket means for enclosing a portion of the balloon, said jacket means having a proximal end and a distal end, and wherein one of said ends is disposed on the tubular shaft and the other of said ends is disposed on the means for preventing expansion of balloon segments.

11. A stent delivery system for a balloon expandable stent comprising:

a balloon catheter with a tubular shaft having a proximal end and a distal end, and an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft, and wherein means for preventing expansion of balloon segments are attached to the tubular shaft either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon;

the means for preventing expansion of balloon segments comprise a sleeve having proximal and distal ends one of which is surrounding a portion of the tubular shaft in the vicinity of the balloon and the other of which is surrounding a portion of the balloon; and

latch means on one of the sleeve or shaft cooperating with catch means on the other of the sleeve or shaft for attaching one end of the sleeve to the portion of the tubular shaft surrounded by that end of the sleeve.

12. A stent delivery system for a balloon expandable stent comprising:

a balloon catheter with a tubular shaft having a proximal end and a distal end, and an elongated dilatation balloon with proximal and distal ends, said balloon being mounted on said tubular shaft in the vicinity of the distal end thereof wherein the tubular shaft comprises a guidewire lumen with an entry for the guidewire distal of the balloon and an exit for the guidewire distal of the proximal end of the tubular shaft, and wherein means for preventing expansion of balloon segments are attached to the tubular shaft either distal of the exit for the guidewire if said exit is proximal of the balloon or proximal of the exit for the guidewire if said exit is distal of the balloon; and

elastic balloon jacket means for enclosing a portion of the balloon, said jacket means having a proximal end and a distal end, and wherein one of said ends is disposed on the tubular shaft and the other of said ends is disposed on the means for preventing expansion of balloon segments.