Claims
- 1. A catheter for insertion into a bodily conduit, said catheter comprising:
- a shaft comprising at least first and second lumens for delivery of fluid inflation media;
- a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon;
- a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers has a proximal end and is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers;
- means to inflate each of said secondary chambers, said means including a plurality of channels, wherein each of said channels is in fluid communication with one of said secondary chambers and with said second lumen, said channels extend into said proximal ends of each of said secondary chambers, and circumferential webs separate said channels from each other.
- 2. A catheter in accordance with claim 1 wherein each of said secondary chambers is further defined by side walls, each of said secondary chambers sharing a common one of said side walls with an adjacent one of said secondary chambers.
- 3. A catheter in accordance with claim 1 wherein said channels and said webs together form a conical proximal intermediate member attached to said primary and said secondary balloons.
- 4. A catheter in accordance with claim 3 further including a conical distal intermediate member attached to said primary and said secondary balloons.
- 5. A catheter in accordance with claim 4 wherein said shaft extends through both of said proximal and said distal intermediate members.
- 6. A catheter in accordance with claim 3 wherein said fluid communication between said channels and said second lumen is provided by a manifold formed between said channels and said second lumen; and wherein said proximal intermediate member is joined to said shaft by a hub, and a void space between said hub, said first lumen, said second lumen, and said channels defines said manifold.
- 7. A catheter in accordance with claim 1 wherein said fluid communication between said channels and said second lumen is provided by a manifold formed between said channels and said second lumen.
- 8. A catheter in accordance with claim 1 further comprising a medication dispensing lumen, and wherein at least one of said secondary chambers is in fluid communication with said bodily conduit and with a source of fluid medication via said medication dispensing lumen, thereby providing a dispensing conduit for the delivery of medications to predetermined locations within said bodily conduit.
- 9. A catheter in accordance with claim 1 wherein said channels are primary channels, and said shaft further comprises a third lumen; and further comprising:
- a tertiary balloon comprising an array formed of a plurality of radially disposed inflatable tertiary chambers disposed cylindrically about said secondary balloon; wherein each of said tertiary chambers is defined by at least an inner wall and an outer wall, said secondary chamber outer walls providing said inner walls for said tertiary chambers; and
- means to inflate each of said tertiary chambers, said means including a plurality of secondary channels, each secondary channel being in fluid communication with one of said tertiary chambers and with said third lumen.
- 10. A catheter in accordance with claim 9 wherein each of said tertiary chambers is further defined by side walls, each of said tertiary chambers sharing a common one of said side walls with an adjacent one of said tertiary chambers.
- 11. A catheter in accordance with claim 9 wherein said third lumen is in fluid communication with a pressure sensing means for monitoring the inflation pressure in at least one of said tertiary chambers.
- 12. A catheter in accordance with claim 11 wherein said shaft further comprises a fourth lumen, at least one of said tertiary chambers being in fluid communication with said third lumen and at least another of said tertiary chambers being in fluid communication with said fourth lumen.
- 13. A catheter in accordance with claim 9 further comprising a medication dispensing lumen, and wherein at least one of said tertiary chambers is in fluid communication with said bodily conduit and with a source of fluid medication via said medication dispensing lumen, thereby providing a dispensing conduit for the delivery of medications to predetermined locations within said bodily conduit.
- 14. A catheter for insertion into a bodily conduit, said catheter comprising:
- a shaft comprising at least first and second lumens for delivery of fluid inflation media;
- a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon;
- a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers; and
- means to inflate each of said secondary chambers, said means including a plurality of channels, each channel being in fluid communication with one of said secondary chambers and with said second lumen;
- wherein said second lumen is in fluid communication with a pressure sensing means for monitoring the inflation pressure in at least one of said secondary chambers.
- 15. A catheter in accordance with claim 14 wherein said shaft further comprises a third lumen, at least one of said secondary chambers being in fluid communication with said second lumen and at least another of said secondary chambers being in fluid communication with said third lumen.
- 16. A catheter for insertion into a bodily conduit, said catheter comprising:
- a shaft comprising at least first and second lumens for delivery of fluid inflation media;
- a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon;
- a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers has a proximal end and is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers;
- means to inflate at least one of said secondary chambers, said means including at least one first channel in fluid communication with said at least one secondary chamber and with said second lumen, wherein said at least one first channel extends into said proximal end of at least one of said secondary chambers;
- a plurality of additional channels each in fluid communication with one of the remainder of said secondary chambers, wherein each of said additional channels extends into said proximal end of one of said remainder of said secondary chambers, and circumferential webs separate said first and said additional channels from each other.
- 17. A catheter in accordance with claim 16 wherein said shaft further comprises a third lumen, said at least one secondary chamber being in fluid communication with said second lumen and at least said one of said remainder of said secondary chambers being in fluid communication with said third lumen; wherein said second lumen is in fluid communication with a pressure sensing means for monitoring the inflation pressure in said at least one secondary chamber.
- 18. A catheter in accordance with claim 16 wherein said shaft further comprises a third lumen; and further comprising:
- a tertiary balloon comprising an array formed of a plurality of radially disposed inflatable tertiary chambers disposed cylindrically about said secondary balloon; wherein each of said tertiary chambers is defined by at least an inner wall and an outer wall, said secondary chamber outer walls providing said inner walls for said tertiary chambers; and
- means to inflate at least one of said tertiary chambers, said means including at least one channel in fluid communication with said at least one tertiary chamber and with said third lumen.
- 19. A catheter in accordance with claim 18 further comprising pressure sensing means in fluid communication with said third lumen for monitoring the inflation pressure in said at least one tertiary chamber.
- 20. A catheter in accordance with claim 19 wherein said shaft further comprises a fourth lumen, said at least one tertiary chamber being in fluid communication with said third lumen and at least another of said tertiary chambers being in fluid communication with said fourth lumen.
- 21. A catheter in accordance with claim 16 wherein said shaft further comprises at least a third lumen for delivery of fluid inflation media; each of said remainder of said secondary chambers being in fluid communication through its associated channel with said third lumen.
- 22. A catheter in accordance with claim 21 wherein said fluid communication between said first channel and said second lumen is provided by a first manifold formed between said first channel and said second lumen, and said fluid communication between said additional channels and said third lumen is provided by a second manifold formed between said additional channels and said third lumen.
- 23. A method for administering treatment to widen a constricted portion of a bodily conduit to establish a desired blood flow rate through said constricted portion, said method comprising the steps of:
- inserting a catheter having an inflatable balloon into said bodily conduit to position said balloon within said constricted portion, said catheter comprising a shaft comprising at least first and second lumens for delivery of fluid inflation media; a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon to a first preselected diameter; a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers; means to inflate each of said secondary chambers to achieve a second preselected diameter greater than said first preselected diameter, said means including a plurality of channels, each channel being in fluid communication with one of said secondary chambers and with said second lumen;
- inflating said primary balloon to said first preselected diameter to engage said constricted portion and to widen said constricted portion to a first treated diameter;
- examining said constricted portion to determine whether said first treated diameter is sufficient to establish said desired blood flow rate;
- if said first treated diameter is determined not to be sufficient to establish said desired blood flow rate, inflating said secondary chambers to achieve said second preselected diameter.
- 24. A method in accordance with claim 23 wherein said shaft further comprises a third lumen; and said catheter further comprises: a tertiary balloon comprising an array formed of a plurality of radially disposed inflatable tertiary chambers disposed cylindrically about said secondary balloon, wherein each of said tertiary chambers is defined by at least an inner wall and an outer wall, said secondary chamber outer walls providing said inner walls for said tertiary chambers; and means to inflate each of said tertiary chambers to a third preselected diameter, said means including a plurality of channels, each channel being in fluid communication with one of said tertiary chambers and with said third lumen; and further comprising the steps of:
- examining said constricted portion to determine whether said second treated diameter is sufficient to establish said desired blood flow rate;
- if said second treated diameter is determined not to be sufficient to establish said desired blood flow rate, inflating said tertiary chambers to said third preselected diameter.
- 25. A method for administering treatment to widen a constricted portion of a bodily conduit to establish a desired blood flow rate through said constricted portion, said method comprising the steps of:
- inserting a catheter having an inflatable balloon into said bodily conduit to position said balloon within said constricted portion, said catheter comprising a shaft comprising at least first and second lumens for delivery of fluid inflation media; a primary balloon having a generally cylindrical wall concentric with said shaft and defining a primary chamber, said primary chamber being in fluid communication with said first lumen for inflation of said primary balloon to a first preselected diameter; a secondary balloon comprising an array formed of a plurality of radially disposed inflatable secondary chambers disposed cylindrically about said primary balloon, wherein each of said secondary chambers is defined by at least an inner wall and an outer wall, said primary balloon wall providing said inner wall for each of said secondary chambers; means to inflate at least one of said secondary chambers to achieve a second preselected diameter greater than said first preselected diameter, said means including at least one channel in fluid communication with said at least one secondary chamber and with said second lumen;
- inflating said primary balloon to said first preselected diameter to engage said constricted portion and to widen said constricted portion to a first treated diameter;
- examining said constricted portion to determine whether said first treated diameter is sufficient to establish said desired blood flow rate;
- if said first treated diameter is determined not to be sufficient to establish said desired blood flow rate, inflating said at least one secondary chamber to achieve said second preselected diameter.
- 26. A method in accordance with claim 25 wherein said shaft further comprises at least a third lumen for delivery of fluid inflation media; said array of secondary chambers includes at least a first set and a second set of said secondary chambers, each set including at least one secondary chamber; and said inflation means includes a plurality of channels, each channel being in fluid communication with one of said secondary chambers, each of the secondary chambers of said first set being in fluid communication through its associated channel with said second lumen, and each of the secondary chambers of said second set being in fluid communication through its associated channel with said third lumen; wherein said step of inflating said at least one secondary chamber comprises inflating said first set of said secondary chambers to achieve said second preselected diameter; and further comprising the steps of
- reexamining said constricted portion to determine whether said second treated diameter is sufficient to establish said desired blood flow rate;
- if said second treated diameter is determined not to be sufficient to establish said desired blood flow rate, inflating said second set of said secondary chambers to achieve a third preselected diameter.
- 27. A method in accordance with claim 26 wherein said fluid communication between said first set of secondary chambers and associated channels and said second lumen is provided by a first manifold formed between said channels and said second lumen, and said fluid communication between said second set of secondary chambers and associated channels and said third lumen is provided by a second manifold formed between said channels and said third lumen.
- 28. A method in accordance with claim 25 wherein said shaft further comprises a third lumen; and said catheter further comprises: a tertiary balloon comprising an array formed of a plurality of radially disposed inflatable tertiary chambers disposed cylindrically about said secondary balloon, wherein each of said tertiary chambers is defined by at least an inner wall and an outer wall, said secondary chamber outer walls providing said inner walls for said tertiary chambers; and means to inflate at least one of said tertiary chambers to achieve a third preselected diameter, said means including at least one channel in fluid communication with said at least one tertiary chamber and with said third lumen; and further comprising the steps of:
- examining said constricted portion to determine whether said second treated diameter is sufficient to establish said desired blood flow rate;
- if said second treated diameter is determined not to be sufficient to establish said desired blood flow rate, inflating said at least one tertiary chamber to achieve said third preselected diameter.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part application Ser. No. 08/082,594 filed on Jun. 25, 1993 now abandoned, which is a continuation-in-part of commonly assigned, U.S. patent application Ser. No. 08/017,763, now abandoned filed Feb. 16, 1993, by J. Wang. This application is also related to commonly assigned, U.S. patent application Ser. No. 07/862,415, filed Apr. 2, 1992 by J. Wang, now issued as U.S. Pat. No. 5,254,089. U.S. patent applications Ser. Nos. 08/017,763 and 07/862,415 are hereby incorporated herein by reference.
US Referenced Citations (13)
Foreign Referenced Citations (2)
Number |
Date |
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1069826 |
Jan 1984 |
SUX |
8911889 |
Dec 1989 |
WOX |
Continuation in Parts (2)
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Number |
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82594 |
Jun 1993 |
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17763 |
Feb 1993 |
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