Device for directing a wire guide
First Claim
Patent Images
1. A medical device for directing an elongate member, comprising:
- an elongate sheath comprising a proximal end, a distal end and a longitudinal axis extending therebetween;
an expandable obstruction member operatively connected to the elongate sheath;
a first passageway extending along the longitudinal axis from the proximal end to the obstruction member;
a second passageway extending along the longitudinal axis from the proximal end to a portion proximal to the obstruction member, the second passageway terminating at an exit port, the exit port being proximal to the obstruction member; and
an elongate member slidable within the second passageway, the elongate member comprising a first portion disposed within the second passageway and a second portion extending through the exit port, the second portion of the elongate member contacting a surface of the obstruction member in a deflected configuration, wherein the second portion is deflected by the surface in a direction away from the longitudinal axis.
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Accused Products
Abstract
A device for directing a wire guide into a bodily passageway such as a branch of the biliary tree or other difficult to access bodily passageway. The device includes a member, such as an inflatable balloon or a self-expanding basket, for obstructing a first passage. Once the balloon is inflated, or the basket expanded, the wire guide can be reliably directed or deflected into a preferred adjacent passageway in order to cannulate the preferred adjacent passageway. A procedure for cannulating a preferred passageway by obstructing a passageway in the natural flow-path of a wire guide is also provided.
46 Citations
17 Claims
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1. A medical device for directing an elongate member, comprising:
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an elongate sheath comprising a proximal end, a distal end and a longitudinal axis extending therebetween; an expandable obstruction member operatively connected to the elongate sheath; a first passageway extending along the longitudinal axis from the proximal end to the obstruction member; a second passageway extending along the longitudinal axis from the proximal end to a portion proximal to the obstruction member, the second passageway terminating at an exit port, the exit port being proximal to the obstruction member; and an elongate member slidable within the second passageway, the elongate member comprising a first portion disposed within the second passageway and a second portion extending through the exit port, the second portion of the elongate member contacting a surface of the obstruction member in a deflected configuration, wherein the second portion is deflected by the surface in a direction away from the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of directing a wire guide, the method comprising the steps of:
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a) providing a medical device comprising; an elongate sheath comprising a proximal end, a distal end and a longitudinal axis extending therebetween; an obstruction member, the obstruction member being operatively connected to the elongate sheath; a first passageway extending along the longitudinal axis from the proximal end to the obstruction member; a second passageway extending along the longitudinal axis from the proximal end to a portion proximal to the obstruction member, the second passageway terminating at an exit port proximal to the obstruction member; and an elongate member slidable within the second passageway, wherein the obstruction member is configured to deflect the elongate member toward a desired direction away from the longitudinal axis; b) inserting the elongate sheath into a branching body lumen having a first branch and a second branch adjacent to the first branch; c) advancing a portion of the elongate sheath into the first branch, thereby positioning the obstruction member partially within the first branch; d) expanding the obstruction member within the first branch, thereby obstructing entry into the first branch; e) advancing the elongate member distally through the exit port; f) deflecting the elongate member away from the longitudinal axis by contacting a surface of the obstruction member; and g) cannulating the second branch with the elongate member. - View Dependent Claims (16)
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17. A method of accessing a desired passageway branching from a body lumen, the method comprising the steps of:
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a) providing a medical device comprising a wire guide, and a catheter having an inflatable balloon configured to deflect the wire guide; b) inserting a portion of the catheter into a first branch of the body lumen; c) inflating the balloon within the first branch, thereby obstructing the first branch; d) advancing the wire guide through the body lumen and through an exit port proximal to the balloon, contacting the balloon with a portion of the wire guide and deflecting the wire guide away from the longitudinal axis; and e) advancing the wire guide into the desired passageway.
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Specification