Endovascular devices and methods
AssigneeBoston Scientific Scimed, Inc.
InventorsChad J. Kugler, Robert E. Atkinson
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Abstract
Devices and methods for the treatment of chronic total occlusions are provided. One disclosed embodiment comprises a method of facilitating treatment via a vascular wall defining a vascular lumen containing an occlusion therein. The method includes providing an intravascular device having a distal portion with a side port, inserting the device into the vascular lumen, positioning the distal portion in the vascular wall, directing the distal portion within the vascular wall such that the distal portion moves at least partially laterally, and directing the side port towards the vascular lumen.
Claims20
A method of facilitating treatment of a blood vessel, comprising:
- advancing a guidewire between an intimal layer and an adventitial layer of the blood vessel past an occlusion disposed within a lumen of the blood vessel;
- advancing a balloon catheter over the guidewire until a balloon disposed on a distal portion of the balloon catheter is disposed distal of the occlusion between the intimal layer and the adventitial layer;
- and
- inflating the balloon between the intimal layer and the adventitial layer to radially displace a distal end of the balloon catheter towards the lumen of the blood vessel.
A method of facilitating treatment of a blood vessel, comprising:
- advancing a guidewire between an intimal layer and an adventitial layer of the blood vessel until a distal end of the guidewire is positioned distal of an occlusion disposed within a lumen of the blood vessel;
- advancing an intravascular device over the guidewire until a balloon disposed on a distal portion of an elongate shaft of the intravascular device is disposed distal of the occlusion between the intimal layer and the adventitial layer, wherein the guidewire is slidably disposed within a lumen of the elongate shaft;
- withdrawing the guidewire from the lumen of the elongate shaft;
- and
- inflating the balloon between the intimal layer and the adventitial layer to radially displace the distal portion of the elongate shaft away from the adventitial layer until a distal opening of the elongate shaft is directed towards the lumen of the blood vessel.
A method of facilitating treatment of an occlusion within a lumen of a blood vessel, comprising:
- advancing a guidewire between an intimal layer and an adventitial layer of the blood vessel until a distal end of the guidewire is disposed distal of the occlusion between the intimal layer and the adventitial layer;
- maintaining the distal end of the guidewire between the intimal layer and the adventitial layer while advancing an intravascular device over the guidewire until a balloon disposed on a distal portion of an elongate shaft of the intravascular device is disposed adjacent a distal end of the occlusion;
- withdrawing the guidewire from the intravascular device;
- inflating the balloon between the intimal layer and the adventitial layer to direct a distal opening of the elongate shaft away from the adventitial layer and towards the lumen of the blood vessel;
- and
- after inflating the balloon, advancing a distal end of a sharpened stylet out of the distal opening, through the intimal layer, and into the lumen of the blood vessel distal of the occlusion.
Dependencies are inferred from the claim text.