Integrated balloon catheter inflation system
First Claim
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1. A balloon catheter system having an integrated inflation subsystem, comprising:
- a manifold having internal passages;
a sealed pressurized vessel permanently attached to an inflation port in the manifold, wherein the pressurized vessel is attached to the manifold in a manner selected from the group consisting of adhesion and thermal welding;
a sealed vacuum vessel permanently attached to a vacuum port in the manifold in a manner selected from the group consisting of adhesion and thermal welding;
a balloon catheter having a balloon on a distal end in fluid communication with an inflation lumen extending through the catheter;
a balloon port in the manifold in fluid communication with and permanently connected to the balloon catheter inflation lumen, wherein the manifold with connected vessels is assembled and packaged with the balloon catheter; and
a control valve on the manifold configured to selectively open and close fluid communication between the balloon port and the inflation port so that a positive pressure differential from the pressurized vessel inflates the balloon, wherein the control valve is also configured to selectively open and close fluid communication between the balloon port and the vacuum port so that a negative pressure differential from the vacuum vessel deflates the balloon.
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Abstract
An inflation system having two pressure vessels integrated into a balloon catheter. A pressurized chamber and a vacuum chamber are integrally attached to proximal end of the balloon catheter and activated by a common valve or switch. Pressure or vacuum is selectively transmitted to the balloon depending on the valve/switch position. The working fluid may be air, or a combination of air and saline with an intermediate piston/cylinder assembly. The balloon catheter may be a part of a heart valve delivery system with a balloon-expandable heart valve crimped onto the balloon.
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Citations
18 Claims
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1. A balloon catheter system having an integrated inflation subsystem, comprising:
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a manifold having internal passages; a sealed pressurized vessel permanently attached to an inflation port in the manifold, wherein the pressurized vessel is attached to the manifold in a manner selected from the group consisting of adhesion and thermal welding; a sealed vacuum vessel permanently attached to a vacuum port in the manifold in a manner selected from the group consisting of adhesion and thermal welding; a balloon catheter having a balloon on a distal end in fluid communication with an inflation lumen extending through the catheter; a balloon port in the manifold in fluid communication with and permanently connected to the balloon catheter inflation lumen, wherein the manifold with connected vessels is assembled and packaged with the balloon catheter; and a control valve on the manifold configured to selectively open and close fluid communication between the balloon port and the inflation port so that a positive pressure differential from the pressurized vessel inflates the balloon, wherein the control valve is also configured to selectively open and close fluid communication between the balloon port and the vacuum port so that a negative pressure differential from the vacuum vessel deflates the balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A manufactured balloon catheter system, comprising:
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a balloon catheter having a balloon on a distal end in fluid communication with an inflation lumen extending through the catheter; an integrated inflation system assembled and packaged with the balloon catheter, the integrated inflation system having; a manifold having internal passages; a sealed pressurized vessel permanently attached to an inflation port in the manifold; a sealed vacuum vessel permanently attached to a vacuum port in the manifold, wherein the pressurized vessel and the vacuum vessel are attached to the manifold in a manner selected from the group consisting of adhesion and thermal welding; a balloon port in the manifold in fluid communication with and permanently connected to the balloon catheter inflation lumen; and a control valve on the manifold configured to selectively open and close fluid communication between the manifold internal passages and one or the other of the pressurized vessel and vacuum vessel. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification