APPARATUS AND METHODS FOR TREATING OBSTRUCTIONS WITHIN BODY LUMENS

摘要

Apparatus and methods are provided for delivering fluid into a body lumen during a medical procedure. A distal end of an apparatus may be introduced into a body lumen, and a valve on the distal end may be opened to deliver fluid through a first lumen into the body lumen, e.g., contrast and/or other diagnostic or therapeutic agents. The valve may be closed, and a procedure may be performed within the body lumen, e.g., using a treatment element carried on the distal end. For example, the treatment element may include a balloon that may be inflated when fluid is delivered through the first lumen with the valve closed. Optionally, a prosthesis, energy source, drug platform, and the like may be carried by the balloon for treating the body lumen. In various embodiments, the valve may be located proximal or distal to the treatment element.

主权项

1. A method for treating a body lumen of a patient using a balloon apparatus comprising
an outer member including a first lumen extending between proximal and distal ends thereof, an inner member slidable within the first lumen, and a balloon comprising a proximal end attached to the outer member distal end, a distal end including an outlet and an interior communicating with the first lumen and the outlet, the method comprising: introducing the distal end of the outer member into a body lumen with the balloon in a contracted condition and the inner member in a first position such that the outlet is substantially sealed by a sealing member on the inner member distal end; directing an actuator on a proximal end of the apparatus to move the inner member to a second position consequently directing the sealing member away from the outlet to open the outlet; delivering fluid through the first lumen such that the fluid passes through the balloon interior and exits the open outlet into the body lumen; directing the inner member towards the first position to substantially seal the outlet with the sealing member; and delivering fluid through the first lumen with the outlet substantially sealed, thereby expanding the balloon from the contracted condition to an enlarged condition.