Systems and methods for directing and snaring guidewires
First Claim
1. A method for manipulating a guidewire device within a body, comprising the steps of:
- introducing a distal portion of a guidewire device into a first location in the body;
introducing a distal end of a directing member into the body until it is adjacent to the distal end of the guidewire device;
capturing the distal portion of the guidewire device with a grasping mechanism on the distal end of the directing member;
directing the directing member to a second location in the body with the distal portion of the guidewire device captured by the grasping mechanism; and
releasing the distal portion of the guidewire device from the grasping mechanism at the second location.
3 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for achieving directed placement of guidewires or other flexible rails over which other catheters or other devices may be introduced to a targeted location. A guidewire directing device includes a lumen extending between a proximal end and a distal peripheral opening for directing a guidewire laterally from the device, and may have a deflecting member with a predetermined deflection angle in the lumen adjacent the peripheral opening. A snaring device is also provided that includes one or more lumens through which a snare or other grasping member is directed for releasably capturing or coupling to a guidewire. The snaring and target guidewire devices may include cooperating end effectors for releasably coupling or securing the devices together. The devices may be used for directing, snaring and/or manipulating one or more guidewires between two blood vessels connected by an interstitial channel, for example, to “floss” a guidewire through the coronary arterial and venous systems between two percutaneous entry sites and/or to bypass a lesion in a vessel using proximal and distal interstitial channels communicating with an adjacent vessel.
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Citations
44 Claims
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1. A method for manipulating a guidewire device within a body, comprising the steps of:
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introducing a distal portion of a guidewire device into a first location in the body;
introducing a distal end of a directing member into the body until it is adjacent to the distal end of the guidewire device;
capturing the distal portion of the guidewire device with a grasping mechanism on the distal end of the directing member;
directing the directing member to a second location in the body with the distal portion of the guidewire device captured by the grasping mechanism; and
releasing the distal portion of the guidewire device from the grasping mechanism at the second location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
directing the distal tip of the catheter through the interstitial channel into the first body passage; and
deploying a snaring device from the catheter to capture the distal end of the guidewire device.
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8. The method of claim 7, comprising the additional step of withdrawing the distal portion of the catheter back into the second body passage, thereby pulling the guidewire device into the second body passage.
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9. A method for manipulating a guidewire device within a body passage, comprising:
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introducing a distal portion of a guidewire device into a first location in a first body passage;
introducing a distal end of a directing member into a second body passage adjacent the first location until the distal end of the directing member is adjacent to the distal end of the guidewire device;
advancing a snaring member substantially laterally from the directing device into the first body passage;
capturing the distal portion of the guidewire device in the first body passage with the grasping mechanism on the snaring member; and
directing the directing member to a second location with the distal portion of the guidewire device captured by the grasping mechanism. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for manipulating a guidewire device within a body passage, comprising:
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introducing a distal portion of a guidewire device into a first location within a first blood vessel connected by an interstitial channel to a second blood vessel;
introducing a distal end of a directing member into the second blood vessel proximate the interstitial channel until it is adjacent to the distal portion of the guidewire device;
advancing the distal end of the directing member through the interstitial channel into the first blood vessel;
capturing the distal portion of the guidewire device with a grasping mechanism on the distal end of the directing member; and
directing the directing member to a second location with the distal portion of the guidewire device captured by the grasping mechanism. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for manipulating a guidewire device within a body passage, comprising:
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advancing a distal portion of a first guidewire distally from a first percutaneous entry site into a first vessel to a first location, the first location being located adjacent to a second vessel; and
advancing a distal end of a snaring member from a second percutaneous entry site distally into the second vessel adjacent to the first location;
capturing the distal portion of the first guidewire with a grasping mechanism on the distal end of the snaring member, and directing the snaring member to a second location with the distal portion of the first guidewire captured by the grasping mechanism. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
advancing one of the distal portion of the guidewire and the snaring member between the first and second vessels; and
snaring the distal portion of the first guidewire with the snaring member.
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28. The method of claim 27, wherein the first location is adjacent a proximal channel extending between the first and second vessels.
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29. The method of claim 27, wherein the first vessel comprises a vein, and the second vessel comprises an artery.
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30. The method of claim 29, wherein the first vessel comprises a coronary vein and the second vessel comprises a coronary artery.
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31. The method of claim 27, wherein the snaring member is advanced over a second guidewire into the second vessel.
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32. The method of claim 27, comprising the additional step of withdrawing the snaring member proximally from the second vessel and out the second entry site, thereby flossing the first guidewire through the first and second vessels between the first and second entry sites.
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33. The method of claim 32, comprising the additional steps of:
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advancing a catheter from the second entry site over the flossed first guidewire into the second vessel adjacent to the first selected location;
advancing a snaring member from the first entry site into the first vessel;
deploying a second guidewire from the catheter;
advancing the catheter, the second guidewire or the snaring member between the first and second vessels;
snaring a distal end of the second guidewire with the snaring member;
directing the snaring member distally along the first vessel to a second selected location; and
releasing the distal end of the second guidewire from the snaring member at the second selected location.
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34. The method of claim 33, wherein the catheter is directed through the channel into the first vessel prior to the deployment of the second guidewire.
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35. The method of claim 33, wherein:
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a third guidewire is advanced from the first entry site into the first vessel prior to the snaring member being advanced from the first entry site into the first vessel; and
the snaring member is advanced into the first vessel over the third guidewire.
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36. The method of claim 33, wherein the second location is a distal location in the second vessel, and wherein the snaring member is advanced through a distal channel from the first vessel into the second vessel to advance the second guidewire into the distal location in the second vessel.
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37. The method of claim 36, wherein the snaring member is advanced through the distal channel over a fourth guidewire previously placed from the first entry site through the first vessel and the distal channel into the distal location in the second vessel.
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38. The method of claim 33, wherein the second vessel comprises an artery, and wherein the artery includes a lesion at a location between the first and second locations.
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39. A method for manipulating a guidewire device within a body passage, comprising:
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creating an interstitial opening between a first blood vessel and a second blood vessel;
introducing a distal portion of a guidewire device into a first location within the first blood vessel;
introducing a distal end of a directing member into the second blood vessel proximate the interstitial channel;
advancing the distal end of the directing member through the interstitial channel into the first blood vessel; and
capturing the distal portion of the guidewire device with a grasping mechanism on the distal end of the directing member. - View Dependent Claims (40, 41, 42, 43, 44)
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Specification