Balloon catheter with balloon surface retention means

• US 5,487,730 A
• Filed: 05/27/1994
• Issued: 01/30/1996
• Est. Priority Date: 12/30/1992
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Marcadis, Stuart J., Devries, James H.
• Primary Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US08/250,863
• Time in Patent Office: 613 Days
• Field of Search: 604/96, 604/104, 604/107, 604/280, 606/191, 606/192, 606/194, 606/198
• US Class Current: 604/103.07
• CPC Class Codes: A61M 2025/0177 having external means for receiving guide wires, wires or stiffening members, e.g. loops, clamps or lateral tubes
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• 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 spikes, felt or a hydrophilic coating, on the surface of the retention means to keep it firmly in place.

Claims

1. An elongated flexible catheter for supplying perfusion liquid to a bodily vessel having an orifice, the catheter comprising:

a body having a proximal end, a distal end receivable in a vessel by way of the vessel orifice, and an infusion lumen formed within the body and extending between the proximal end and the distal end;

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

a radially expandable sealing member surrounding the body proximally of the outlet, the sealing member being receivable in the orifice in its unexpanded state and expandable into engagement with a vessel wall to form a seal of the orifice thereof;

the sealing member including a plurality of spaced apart felt patches affixed to the outer surface of the sealing member to enhance the purchase between the vessel wall and the sealing member in the expanded state to resist removal of the distal end from the vessel and loss of the seal.

2. An elongated flexible catheter for supplying perfusion liquid to a bodily vessel having an orifice, the catheter comprising:

a body having a proximal end, a distal end receivable in a vessel by way of the vessel orifice, and an infusion lumen formed within the body and extending between the proximal end and the distal end;

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

a radially expandable inflatable balloon surrounding the body proximally of the outlet, the inflatable balloon being receivable in the orifice in its unexpanded state and expandable into engagement with a vessel wall to form a seal of the orifice thereof;

the inflatable balloon including a continuous felt strip affixed to and encircling the outer surface of the balloon to enhance the purchase between the vessel wall and the balloon in the expanded state to resist removal of the distal end from the vessel and loss of the seal, the felt strip being arranged to allow expansion of the balloon while maintaining a continuous loop encircling the balloon.

3. A catheter according to claim 2 wherein the continuous felt strip is arranged in a zigzag pattern such that continuous loops formed of the strip are closer to each other when the balloon is deflated than when the balloon is inflated.