Retrograde coronary sinus perfusion cannula and methods of using same

• US 8,500,688 B2
• Filed: 04/16/2009
• Issued: 08/06/2013
• Est. Priority Date: 04/16/2009
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Engel, Rebecca L., Weston, David E., Lawrence, Robert J., Rodriguez, Ernest, Sandmore, Donald R., Teunis, Teresa A.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): PATEL, PRITESH ASHOK
• Application Number:
  US12/424,798
• Publication Number:
  US 20100268159A1
• Time in Patent Office: 1,573 Days
• Field of Search: 604/117, 604/93.01, 604/95.01, 604/96.01, 604/95.02, 604/99.01, 604/103.06, 604/103.08, 604/97.01, 604/103.1, 604/99.03
• US Class Current: 604/103.08
• CPC Class Codes: A61L 29/126 having a macromolecular matrix
• CPC Class Codes: A61L 29/18 Materials at least partially X-ray or laser opaque
• CPC Class Codes: A61M 2025/1075 having a balloon composed of several layers, e.g. by coating or embedding
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 2025/1086 having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves
• CPC Class Codes: A61M 25/007 Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• 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 25/10184 Means for controlling or monitoring inflation or deflation
• CPC Class Codes: A61M 25/10185 Valves
• CPC Class Codes: A61M 25/1034 Joining of shaft and balloon
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A retrograde coronary sinus perfusion catheter including a tubular catheter body having a proximal end, a distal end, and an inner lumen, and an inflatable balloon spaced proximally from the distal end of the catheter body, wherein the balloon is echogenically enhanced.

Claims

1. A retrograde coronary sinus perfusion catheter comprising:

a tubular catheter body having a proximal end, a distal end, and an inner lumen; and

an inflatable balloon spaced proximally from the distal end of the catheter body, wherein the balloon is echogenically enhanced, wherein the balloon comprises a plurality of embedded hollow particles that provide the echogenic enhancement of the balloon.

2. The catheter of claim 1, wherein the hollow particles comprise glass microspheres.

3. The catheter of claim 1, wherein the balloon comprises a polyurethane material.

4. The catheter of claim 1, wherein the balloon is automatically expandable.

5. The catheter of claim 1, wherein the catheter body further comprises an inflation lumen having a distal end that terminates within an interior portion of the balloon, wherein a first end of a tubular inflation line extends from a proximal end of the inflation lumen, and wherein a balloon inflation device extends from a second end of the tubular inflation line.

6. The catheter of claim 5, wherein the balloon inflation device comprises a pilot balloon and a check valve that can be activated for inflation of the balloon.

7. A retrograde coronary sinus perfusion catheter comprising:

a tubular catheter body having a proximal end, a distal end, and an inner lumen; and

an inflatable balloon spaced proximally from the distal end of the catheter body, wherein the balloon is echogenically enhanced, wherein the echogenically enhanced balloon comprises density-laden tungsten.

12. The catheter of claim 7, wherein the balloon is automatically expandable.

13. The catheter of claim 7, wherein the catheter body further comprises an inflation lumen having a distal end that terminates within an interior portion of the balloon, wherein a first end of a tubular inflation line extends from a proximal end of the inflation lumen, and wherein a balloon inflation device extends from a second end of the tubular inflation line.

8. A retrograde coronary sinus perfusion catheter system comprising:

a tubular catheter body having a proximal end, a distal end, and an inner lumen;

an inflatable balloon spaced proximally from the distal end of the catheter body, wherein the balloon is echogenically enhanced; and

an introducer comprising a distal portion that is deflectable in at least one direction, and wherein the distal portion of the introducer is insertable into an infusion lumen that extends through at least a portion of a length of the tubular catheter body, wherein the introducer further comprises a retractable sheath having an interior area, wherein the malleable portion and distal portion of the introducer are at least partially positionable within the interior area of the sheath, and wherein at least the distal portion of the introducer is retractable and deployable relative to a distal end of the sheath.

9. The catheter of claim 8, wherein the introducer further comprises at least one marker band adjacent to the distal portion.

10. The catheter of claim 8, wherein the distal portion is formed of a shape memory material and wherein the introducer further comprises a malleable portion that is adjacent and proximal to the distal portion.

11. The catheter of claim 10, wherein the distal portion of the introducer comprises a flexible spring tip.

14. The catheter of claim 10, wherein the balloon inflation device comprises a pilot balloon and a check valve that can be activated for inflation of the balloon.