Catheter having a balloon with retention enhancement

• US 5,653,690 A
• Filed: 10/30/1995
• Issued: 08/05/1997
• Est. Priority Date: 12/30/1992
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Devries, James H., Booth, William M.
• Primary Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US08/550,277
• Time in Patent Office: 645 Days
• Field of Search: 604/96-103, 606/191, 606/192, 606/194
• US Class Current: 604/103.07
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 2025/1095 with perfusion means for enabling blood circulation while the balloon is in an inflated state or in a deflated state, e.g. permanent by-pass within catheter shaft
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• 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

Abstract

A catheter for retrograde perfusion of the heart through the coronary sinus, which has an infusion lumen for introducing perfusion liquid into the heart, a retention means such as an inflatable balloon, and can have retention enhancements such as proximally sloping spikes, or barbed protuberances on the surface of the retention means to keep it firmly in place.

Claims

1. A retrograde cardioplegia catheter for supplying perfusion liquid to a coronary sinus vein through an orifice in the coronary sinus vein, the catheter comprising;

a body receivable in a coronary sinus vein by way of an orifice in the coronary sinus vein opening into a heart chamber;

the body having a longitudinal centerline, a proximal end, and a distal end opposite from the proximal end;

an infusion lumen formed within the body and extending between the ends thereof;

the infusion lumen having at least one outlet at the distal end for discharge of liquid from the lumen;

an expandable sealing member surrounding the body proximally of the outlet, the sealing member having an exterior surface and being receivable in the orifice in its unexpanded state and radially expandable so that at least a portion of the exterior surface engages a wall of the coronary sinus to form a seal closing the orifice;

a series of barbed protuberances integrally formed on the exterior surface of the sealing member to enhance the purchase between the coronary sinus wall and the sealing member in the expanded state thereby increasing resistance to removal of the sealing member from the coronary sinus and loss of the seal, each of the barbed protuberances comprising;

a proximal surface having a base edge provided on the expandable sealing member, the proximal surface being arcuately convex and extending outwardly and proximally from the exterior surface of the sealing member in a direction oblique to the longitudinal axis of the body; and

an upper surface extending outwardly and proximally from the exterior surface of the sealing member, the upper surface and proximal surface terminating at a common, upper edge.

2. A retrograde cardioplegia catheter according to claim 1 wherein the upper edge is arcuate and has a radius of curvature and the base edge is also arcuate and has a radius of curvature, the radius of curvature of the base edge being less than the radius of curvature of the upper edge.

3. A retrograde cardioplegia catheter according to claim 2 wherein the arc of the base edge and upper edge is semicircular.

4. A retrograde cardioplegia catheter according to claim 1 wherein the proximal surface extends outwardly from the exterior surface of the sealing member in the unexpanded state at an angle of approximately 45 degrees.

5. A retrograde cardioplegia catheter according to claim 1 wherein the barbed protuberances are staggered, radially about the exterior surface of the expandable sealing member.

6. A retrograde cardioplegia catheter according to claim 5 wherein the barbed protuberances are staggered, axially on the exterior surface of the expandable sealing member.

7. A retrograde cardioplegia catheter according to claim 1 wherein the barbed protuberances are staggered, axially on the exterior surface of the expandable sealing member.

8. A catheter for conducting fluid to or from a human body through an orifice in the body, the orifice having an interior surface, the catheter comprising;

a body receivable in the orifice, the body having opposed proximal and distal ends, a longitudinal axis extending between the ends, an infusion lumen formed within the body extending between the ends thereof and at least one outlet provided adjacent the distal end for discharge of liquid from the lumen;

an expandable sealing member provided on and surrounding the body proximally of the outlet, the sealing member having an exterior surface and being expandable between expanded and retracted states, wherein the sealing member is receivable in the orifice in its retracted state and the exterior surface thereof contacts the interior surface of the orifice in the expanded state to form a seal substantially closing the orifice;

a series of barbed protuberances integrally formed on the exterior surface of the sealing member to enhance the purchase between the interior surface of the orifice and the sealing member in the expanded state thereby increasing resistance to movement of the sealing member with respect to the orifice and loss of the seal, the barbed protuberances comprising;

a proximal surface having a base edge provided on the expandable sealing member, the proximal surface being crescent-shaped and extending outwardly from the exterior surface of the sealing member; and

an upper surface extending outwardly and proximally from the exterior surface of the sealing member, the upper surface and proximal surface terminating at a common, upper edge, the upper edge being arcuate.

9. A catheter according to claim 8 wherein the proximal surface extends proximally from the exterior surface of the sealing member.

10. A catheter according to claim 9 wherein the proximal surface extends outwardly from the exterior surface of the sealing member in the unexpanded state at an angle of approximately 45 degrees.

11. A catheter according to claim 9 wherein the arcuate upper edge has a radius of curvature and the base edge is also arcuate and has a radius of curvature, the radius of curvature of the base edge being less than the radius of curvature of the upper edge.

12. A catheter according to claim 11 wherein the arc of both the base edge and upper edge is semicircular.

13. A catheter according to claim 8 wherein the barbed protuberances are staggered, radially about the exterior surface of the expandable sealing member.

14. A catheter according to claim 13 wherein the barbed are staggered, axially on the exterior surface of the expandable sealing member.

15. A catheter according to claim 8 wherein the barbed protuberances are staggered, axially on the exterior surface of the expandable sealing member.

16. A retrograde cardioplegia catheter for supplying perfusion liquid to a coronary sinus vein, the catheter comprising:

a body having proximal and distal ends, the distal end being receivable in the coronary sinus vein;

an infusion lumen formed within the body and extending between the ends thereof, the infusion lumen having at least one fluid outlet formed adjacent the distal end;

an expandable sealing member mounted on the body proximally of the at least one fluid outlet, the sealing member having an exterior surface and being selectively radially expandable between a retracted state and an expanded state, the sealing member being receivable in the coronary sinus in its retracted state and in the expanded state, the sealing member being adapted to contact a wall of the coronary sinus to effectively prevent the flow of fluid through the coronary sinus vein around the sealing member, the sealing member further having a plurality of protuberances formed on the exterior surface to enhance the purchase between the coronary sinus wall and the sealing member in the expanded state, each protuberance comprising;

a proximal surface projecting radially outwardly from the sealing member;

a base edge having a pair of ends, the base edge being formed at the juncture of the proximal surface and the exterior surface of the sealing member; and

a distal surface projecting radially outwardly from the sealing member, the distal surface intersecting the proximal surface at an outer edge, the outer edge having a pair of ends wherein the ends of the base edge and the ends of the outer edge are coterminous.

17. A catheter according to claim 16, wherein the barbed protuberances are formed integrally with the expandable sealing member.

18. A catheter according to claim 16, wherein the protuberances are arranged in annular rows.

20. A catheter according to claim 16 wherein the base edge has a radius of curvature and the outer edge has a radius of curvature, the outer edge radius being greater than the base edge radius so that at least a portion of the outer edge is positioned proximally of the base edge.

21. A catheter according to claim 20 wherein the proximal surface extends radially outwardly from the exterior surface of the sealing member at an angle of approximately 45°

.

22. A catheter according to claim 20 wherein the proximal surface is crescent-shaped.

23. A catheter according to claim 16 wherein the proximal surface extends radially outwardly from the exterior surface of the sealing member at an angle of approximately 45 °

.

24. A catheter according to claim 16 wherein the proximal surface is crescent-shaped.

25. A retrograde cardioplegia catheter for supplying perfusion liquid to a coronary sinus vein, the catheter comprising:

a body having proximal and distal ends, the distal end being receivable in the coronary sinus vein;

an infusion lumen formed within the body and extending between the ends thereof, the infusion lumen having at least one fluid outlet formed adjacent the distal end;

an expandable sealing member mounted on the body proximally of the at least one fluid outlet, the sealing member having an exterior surface substantially circular in cross section and being selectively radially expandable between a retracted state and an expanded state, the sealing member being receivable in the coronary sinus in its retracted state and, in the expanded state, the sealing member being adapted to contact a wall of the coronary sinus to effectively prevent the flow of fluid through the coronary sinus vein around the sealing member, the sealing member further having a plurality of protuberances formed on the exterior surface to enhance the purchase between the coronary sinus wall and the sealing member in the expanded state, each protuberance comprising;

a proximal surface projecting radially outwardly from the sealing member; and

a distal surface projecting radially outwardly from the sealing member, the distal surface intersecting the proximal surface at an outer edge, the outer edge forming a partially circular arc which is non-concentric with respect to the circular cross section of exterior surface of the sealing member.

19. A catheter according to claim 28 wherein each of the annular rows is arranged with an interval provided between adjacent protuberances of the same annular row, and wherein the protuberances in adjacent annular rows are staggered in a manner such that the protuberances in one annular row are aligned with the intervals in an adjacent annular row.

26. A catheter according to claim 25 wherein the outer edge is semicircular.

27. A catheter according to claim 26 wherein the plurality of protuberances are formed integrally with the expandable sealing member.

28. A catheter according to claim 25 wherein the plurality of protuberances are formed integrally with the expandable sealing member.

29. A catheter according to claim 25 wherein the proximal surface extends radially outwardly from the exterior surface of the sealing member at an angle of approximately 45°

.

30. A catheter according to claim 29 wherein the proximal surface is crescent-shaped.

31. A catheter according to claim 25 wherein the proximal surface is crescent-shaped.

32. A catheter according to claim 25 and further comprising a base edge having a pair of ends, the base edge being formed at the juncture of the proximal surface and the exterior surface of the sealing member, and the outer edge has a pair of ends wherein the ends of the base edge and the ends of the outer edge are coterminous.