Intra-aortic balloon catheter

• US 6,024,693 A
• Filed: 10/16/1998
• Issued: 02/15/2000
• Est. Priority Date: 10/16/1998
• Status: Expired due to Term

• Current Assignee: Datascope Corporation (Getinge AB)
• Original Assignee: Datascope Corporation (Getinge AB)
• Inventors: Marques, Manuel, Laksin, Olga, Schock, Robert
• Primary Examiner(s): Bockelman, Mark
• Application Number:
  US09/174,279
• Time in Patent Office: 487 Days
• Field of Search: 604/96, 604/915, 604/917, 604/265, 427/2.1, 606/192, 606/194, 600/16, 600/18
• US Class Current: 600/18
• CPC Class Codes: A61L 29/06 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 29/085 Macromolecular materials
• CPC Class Codes: A61L 33/0011 Anticoagulant, e.g. heparin, platelet aggregation inhibitor, fibrinolytic agent, other than enzymes, attached to the substrate
• 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 60/139 inside the aorta, e.g. intra-aortic balloon pumps
• CPC Class Codes: A61M 60/274 the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps
• CPC Class Codes: A61M 60/295 Balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/497 for balloon pumps for circulatory assistance
• CPC Class Codes: A61M 60/515 Regulation using real-time patient data
• CPC Class Codes: A61M 60/531 using blood pressure data, e.g. from blood pressure sensors
• CPC Class Codes: A61M 60/865 Devices for guiding or inserting pumps or pumping devices into the patient's body
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: C08L 79/08 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors

Abstract

An improved intra-aortic balloon catheter with a balloon membrane, a tip, and a co-lumen extruded tube having an outer lumen and an inner lumen between the inner and outer surfaces of the co-lumen extruded tube. The portion of the co-lumen extruded tube that defines the inner lumen and which is disposed within the balloon membrane is made from polyimide, a lubricous material, to facilitate guide wire tracking. The polyimide inner tube portion demonstrates good kink resistance and flexural stiffness. In a first alternative embodiment of the invention the co-lumen tube comprises an outer tube with an inner tube embedded in the wall of said outer tube. In a second alternative embodiment of the invention a longitudinal signal pathway is provided.

Claims

1. A balloon catheter comprising a co-lumen tube having a proximal end and a distal end, a balloon membrane having a proximal end and a distal end, and an inner lumen extension tube, said inner lumen extension tube having a proximal end, a distal end, an outer surface, and an inner surface defining a second portion of an inner lumen, said co-lumen tube having a first inner surface, defining an outer lumen, and a second inner surface, defining a first portion of the inner lumen, the proximal end of the inner lumen extension tube is connected to the distal end of the co-lumen tube, the distal end of the inner lumen extension tube is attached to a tip, said tip is attached to the distal end of the balloon membrane, the proximal end of the balloon membrane is attached to the distal end of the co-lumen tube, at least a portion of the inner lumen extension tube is disposed within the balloon membrane, the second portion of the inner lumen communicates with the first portion of the inner lumen, the inner lumen extends the entire length of the co-lumen tube and the entire length of the inner lumen extension tube, the outer lumen extends substantially the length of the co-lumen tube, the outer lumen and the first portion of the inner lumen are not concentric.

2. The balloon catheter as claimed in claim 1 wherein at least a portion of the outer surface of the inner lumen extension tube is coated with polyurethane.

3. The balloon catheter as claimed in claim 1 wherein at least a portion of the inner surface of the inner lumen extension tube is coated with a biocompatible polymer.

4. The balloon catheter as claimed in claim 1 wherein at least a portion of the inner surface of the inner lumen extension tube is coated with a heparin-based material.

5. The balloon catheter as claimed in claim 1 wherein the inner lumen extension tube is made from polyimide.

6. The balloon catheter as claimed in claim 1 wherein the inner surface of the inner lumen extension tube is coated with polytetraflouraethvlene.

7. The balloon catheter as claimed in claim 1 wherein the inner lumen extension tube has a wall thickness between about 0.004" and about 0.006" and an inner diameter between about 0.020" and about 0.035".

8. The balloon catheter as claimed in claim 1 wherein the inner lumen extension tube is substantially enveloped by the balloon membrane.

9. The balloon catheter as claimed in claim 1 wherein the inner lumen extension tube is at least partially disposed within the second inner surface of the first tube.

10. The balloon catheter as claimed in claim 9 wherein the inner lumen extension tube and the first tube are made from different materials.

11. The balloon catheter as claimed in claim 1 wherein the inner lumen extension tube and the first tube are made from different materials.

12. A balloon catheter comprising a co-lumen tube having a proximal end and a distal end, a balloon membrane having a proximal end and a distal end, and an inner lumen extension tube, said inner lumen extension tube having a proximal end, a distal end, an outer surface, and an inner surface, defining a second portion of an inner lumen, said co-lumen tube having a first inner surface, defining an outer lumen, and a second inner surface, defining a first portion of the inner lumen, the inner lumen extension tube being at least partially disposed within the second inner surface of the co-lumen tube, the distal end of the inner lumen extension tube is attached to a tip, said tip is connected to the distal end of the balloon membrane, the proximal end of the balloon membrane is attached to the distal end of the co-lumen tube, at least a portion of the inner lumen extension tube is disposed within the balloon membrane, the inner lumen extends substantially the entire length of the catheter, the outer lumen extends substantially the length of the co-lumen tube, the inner lumen extension tube is made from polyimide, the outer lumen and the first portion of the inner lumen are not concentric.

13. The balloon catheter as claimed in claim 12 wherein at least a portion of the outer surface of the inner lumen extension tube is coated with polyurethane.

14. The balloon catheter as claimed in claim 12 wherein at least a portion of the inner surface of the inner lumen extension tube is coated with a biocompatible polymer.

15. The balloon catheter as claimed in claim 12 wherein at least a portion of the inner surface of the inner lumen extension tube is coated with a heparin-based material.

16. The balloon catheter as claimed in claim 12 wherein at least a portion of the inner lumen extension tube is coated with polytetraflouraethylene.

17. The balloon catheter as claimed in claim 12 wherein the inner lumen extension tube has a wall thickness between about 0.004" and about 0.006" and an inner diameter between about 0.020" and about 0.035".