Occlusion catheter for the ascending aorta

• US 20030167038A1
• Filed: 04/30/2001
• Published: 09/04/2003
• Est. Priority Date: 10/04/1999
• Status: Active Grant

• Current Assignee: Kk Vayu
• Original Assignee: Kk Vayu
• Inventors: Tsutsui, Nobumasa, Yozu, Ryohei, Kumeno, Takashi
• Granted Patent: US 6,679,861 B2
• Time in Patent Office: Days
• US Class Current: 604/101.01
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1056 having guide wire lumens outside the main shaft, i.e. the guide wire lumen is within or on the surface of the balloon
• 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 2025/1097 with perfusion means for enabling blood circulation only while the balloon is in an inflated state, e.g. temporary by-pass within balloon
• CPC Class Codes: A61M 2210/127 Aorta
• CPC Class Codes: A61M 25/0029 characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• CPC Class Codes: A61M 25/003 characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves catheter tips A61M25/0067
• CPC Class Codes: A61M 25/0032 characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• 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 25/1002 characterised by balloon shape A61M25/1006, A61M25/1009 take precedence

Abstract

An occlusion catheter for the ascending aorta capable of obstructing the blood flow within the ascending aorta without inserting through the femoral artery. The occlusion catheter is provided with a drug release aperture formed in the region, which is closer to the proximal end of the catheter tube than a balloon on the outer circumference of the distal end and which is to be located in the vicinity of the coronary ostium when the balloon is placed within the ascending aorta. The present occlusion catheter, when inserted directly into the ascending aorta in the vicinity of the heart to obstruct the blood flow therewithin, enables delivery of a cardiac muscle protective drug to the vicinity of the coronary ostium without inserting the occlusion catheter through the femoral artery in the conventional manner.

Claims

1. An occlusion catheter for the ascending aorta comprising:

a catheter tube having at least a first lumen and a second lumen independent of each other; and

a balloon provided on the outer circumference of the distal end of said catheter tube for being inflated/deflated in accordance with supply or drainage of a fluid through said first lumen in order to obstruct the blood flow within the ascending aorta when inflated,

said catheter tube being provided with a drug release aperture for releasing a drug supplied through said second lumen in the position closer to the proximal end than the site where the blood flow is obstructed by said balloon on the outer circumference of the distal end of said catheter tube.

2. The occlusion catheter for the ascending aorta according to claim 1, wherein at least two drug release apertures are formed more proximally than said balloon in different directions, respectively.

3. The occlusion catheter for the ascending aorta according to claim 2, wherein said at least two drug release apertures are formed in different positions, respectively, relative to the axial direction of said tube.

4. The occlusion catheter for the ascending aorta according to claim 1, wherein said balloon is made of polyurethane.

5. The occlusion catheter for the ascending aorta according to claim 1, wherein said catheter tube includes a portion from the distal end to a point a predetermined distance away therefrom being reinforced with a reinforcement member.

6. An occlusion catheter for the ascending aorta comprising:

a catheter tube having at least a first lumen and a second lumen independent of each other; and

a balloon provided on the outer circumference of the distal end of said catheter tube for being inflated/deflated in accordance with supply or drainage of the fluid through said first lumen in order to obstruct the blood flow within the ascending aorta when inflated, said balloon having a configuration with a concavity on the outer surface at least when inflated and being joined to said catheter tube in said concavity,

said catheter tube being provided with a side aperture in the side wall of said catheter tube in the different position from said concavity of said balloon, for communicating the outside of said catheter tube and said second lumen to enable release of a drug from said side aperture by supplying the drug through said second lumen.

7. The occlusion catheter for the ascending aorta according to claim 6, wherein said concavity is formed at each end of said balloon.

8. The occlusion catheter for the ascending aorta according to claim 6, wherein said catheter tube includes a portion from the distal end to a point a predetermined distance away therefrom being reinforced with a reinforcement member.

9. An occlusion catheter for the ascending aorta comprising:

a catheter tube having at least a first lumen and a second lumen independent of each other; and

a balloon provided on the outer circumference of the distal end of said catheter tube for being inflated/deflated in accordance with supply or drainage of the fluid through said first lumen in order to obstruct the blood flow within the ascending aorta when inflated, said balloon having a configuration with a depression in a part of the center of said balloon at least when inflated and being joined to said catheter tube in said depression,

said catheter tube being provided with a side aperture on the side thereof in said depression of said balloon, for communicating the outside of said catheter tube and said second lumen to enable release of a drug from said side aperture by supplying the drug through said second lumen.

10. The occlusion catheter for the ascending aorta according to claim 9, wherein said catheter tube includes a portion from the distal end to a predetermined distance away therefrom being reinforced with a reinforcement member.

11. An occlusion catheter for the ascending aorta comprising:

a catheter tube having two or more lumens, including at least a first lumen and a second lumen formed therewithin;

a balloon provided on the outer circumference of the distal end of said catheter tube for being inflated/deflated in accordance with supply or drainage of the fluid through said first lumen in order to obstruct the blood flow within the ascending aorta when inflated,

said catheter tube being provided with a side aperture in the position closer to the proximal end than said balloon for communicating the outside of said catheter tube and said second lumen to enable release of a drug from said side aperture by supplying the drug through said second lumen; and

a valve provided within said second lumen having a structure capable of passing a guide wire therethrough and shutting the fluid flow at least when the guide wire is not passed.

12. The occlusion catheter for the ascending aorta according to claim 11, wherein said valve is made of an elastic body having an insertion hole, said insertion hole being shut tight at least when the guide wire is not passed therethrough and expanded due to the elastic deformation of said elastic body when the guide wire is inserted into said insertion hole.

13. The occlusion catheter for the ascending aorta according to claim 12, wherein said side aperture allow the guide wire to be inserted therethrough.

14. A method of using an occlusion catheter for the ascending aorta, comprising the steps of:

making an incision or a hole in the chest to provide access to the ascending aorta from the outside and creating an opening at an insertion site of the ascending aorta, then expanding said opening with a dilator;

inserting the occlusion catheter for the ascending aorta into the ascending aorta through said opening and fixing the occlusion catheter to the ascending aorta;

placing a balloon in a proper indwelling position and inflating the balloon to occlude the ascending aorta; and

releasing a cardiac muscle protective drug from a drug release aperture to deliver the cardiac muscle protective drug to the vicinity of the coronary ostium.