Catheter having a cutting balloon including multiple cavities or multiple channels

• US 20050038383A1
• Filed: 08/14/2003
• Published: 02/17/2005
• Est. Priority Date: 08/14/2003
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Roman, Ricardo David, Kelley, Gregory S., Wu, Show-Mean
• Granted Patent: US 7,887,557 B2
• Time in Patent Office: Days
• US Class Current: 604/103.60
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/22061 for spreading elements apart

Abstract

An angioplasty balloon catheter and method of making and using the same. The balloon catheter may include a catheter shaft and a balloon coupled to the shaft. The balloon may include one or more cutting edges or member and may include a plurality of chambers defined therein.

Claims

1. A medical device, comprising:

an elongate shaft;

an expandable balloon coupled to the shaft, the balloon including an inside surface;

a plurality of dividing sections extending radially inward from the inside surface of the balloon to define a plurality of chambers in the balloon; and

one or more cutting members coupled to the balloon.

2. The device of claim 1, wherein the shaft includes an outer tubular member, an inner tubular member, and an inflation lumen disposed therebetween.

3. The device of claim 2, wherein the inflation lumen is in fluid communication with the chambers of the balloon.

4. The device of claim 2, wherein the inner tubular member includes an inner lumen extending at least partially therethrough.

5. The device of claim 1, further comprising one or more additional lumens disposed within a wall of the balloon.

6. The device of claim 1, further comprising one or more stiffened regions disposed in the balloon.

7. The device of claim 6, wherein the stiffened regions are disposed adjacent the cutting members.

8. An angioplasty balloon catheter, comprising:

a catheter shaft, the shaft including an inner tubular member having an inner lumen extending therethrough, an outer tubular member, and an inflation lumen disposed between the inner and outer tubular members;

an expandable balloon coupled to the shaft, the balloon including a balloon wall and a plurality of inner chambers;

wherein the inflation lumen is in fluid communication with the inner chambers; and

at least one cutting member coupled to the outer wall of the balloon.

9. The catheter of claim 8, wherein the balloon includes three inner chambers.

10. The catheter of claim 8, wherein the balloon includes four inner chambers.

11. The catheter of claim 8, wherein the balloon includes six inner chambers.

12. The device of claim 8, further comprising one or more stiffened regions disposed in the balloon.

13. The device of claim 12, wherein the stiffened regions are disposed adjacent the cutting members.

14. An angioplasty balloon catheter, comprising:

a catheter shaft;

a multi-chamber balloon coupled to the shaft, the balloon including an inner sleeve, an outer wall, and a plurality of internal wall segments extending between the inner sleeve and the outer wall; and

one or more longitudinally extending cutting members coupled to the outer wall of the balloon at circumferential locations between adjacent internal wall segments.

15. The catheter of claim 14, wherein the balloon includes three internal wall segments and three chambers defined between adjacent pairs of internal wall segments.

16. The catheter of claim 14, wherein the balloon includes four internal wall segments and four chambers defined between adjacent pairs of internal wall segments.

17. The catheter of claim 14, wherein the balloon includes six internal wall segments and six chambers defined between adjacent pairs of internal wall segments.

18. The device of claim 14, further comprising one or more stiffened regions disposed in the balloon.

19. The device of claim 18, wherein the stiffened regions are disposed adjacent the cutting members.

20. A method of using a cutting balloon catheter, comprising the steps of:

providing a cutting balloon catheter, the catheter including a catheter shaft and a multi-chamber cutting balloon coupled to the shaft, the multi-chamber balloon including an inner sleeve, an outer wall, a plurality of internal wall segments extending between the inner sleeve and the outer wall, a plurality of chambers defined between pairs of internal wall segments, and one or more cutting members coupled to the outer surface of the balloon between adjacent internal wall segments;

advancing the cutting balloon catheter through a blood vessel to a position adjacent an area of interest;

inflating the balloon by infusing inflation media into the chambers;

deflating the balloon by venting the inflation media from the chambers to preferentially draw the cutting members radially inward; and

withdrawing the cutting balloon catheter from the blood vessel.

21. The method of claim 20, wherein the step of deflating the balloon by venting the inflation media from the chambers includes applying a vacuum to the chambers.