DEVICE AND METHODS FOR SELF-CENTERING A GUIDE CATHETER
First Claim
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1. A device for centering a medical instrument in a conduit within a patient, the device comprising:
- a framework comprised of a plurality of elongate metal frame members, wherein the frame members are attached to each other to define a central lumen having an open proximal end and an open distal end, wherein the distal end has a diameter that is larger than a diameter of the proximal end, and wherein the frame members are attached to each other to further define two or more side apertures that are nearer to the proximal end than to the distal end; and
a covering, wherein the covering is attached to the framework and the covering is a biocompatible membrane or film.
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Abstract
This document provides devices and methods for the treatment of heart conditions such as valvular stenosis. For example, this document provides devices and methods by which a guide catheter can align itself with a blood flow stream to thereby help direct a guidewire or other elongate device transmitted from the guide catheter through an orifice of a heart valve.
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Citations
20 Claims
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1. A device for centering a medical instrument in a conduit within a patient, the device comprising:
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a framework comprised of a plurality of elongate metal frame members, wherein the frame members are attached to each other to define a central lumen having an open proximal end and an open distal end, wherein the distal end has a diameter that is larger than a diameter of the proximal end, and wherein the frame members are attached to each other to further define two or more side apertures that are nearer to the proximal end than to the distal end; and a covering, wherein the covering is attached to the framework and the covering is a biocompatible membrane or film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 14, 15, 16, 17, 18, 19, 20)
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9. A system for treating a human patient, the system comprising:
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a self-centering device comprising; a framework comprised of a plurality of elongate metal frame members, wherein the frame members are attached to each other to define a central lumen having an open proximal end and an open distal end, wherein the distal end has a diameter that is larger than a diameter of the proximal end, and wherein the frame members are attached to each other to further define two or more side apertures that are nearer to the proximal end than to the distal end; and a covering, wherein the covering is attached to the framework and the covering is a biocompatible membrane or film; a guidewire comprising an elongate metal wire; and a guide catheter with a lumen, wherein the self-centering device and the guidewire are arranged to be contained within the lumen, wherein the self-centering device is in a low-profile configuration when the self-centering device is contained within the lumen, and wherein the self-centering device can self-expand to an expanded configuration when the self-centering device is not contained within the lumen.
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10. A method for treating a human patient, the method comprising:
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providing a medical device system comprising; a self-centering device comprising; a framework comprised of a plurality of elongate metal frame members, wherein the frame members are attached to each other to define a central lumen having an open proximal end and an open distal end, wherein the distal end has a diameter that is larger than a diameter of the proximal end, and wherein the frame members are attached to each other to further define two or more side apertures that are nearer to the proximal end than to the distal end; and a covering, wherein the covering is attached to the framework and the covering is a biocompatible membrane or film; a guidewire comprising an elongate metal wire; and a guide catheter with a lumen, wherein the self-centering device and the guidewire are arranged to be contained within the lumen, wherein the self-centering device is in a low-profile configuration when the self-centering device is contained within the lumen, and wherein the self-centering device can self-expand to an expanded configuration when the self-centering device is not contained within the lumen; inserting the guide catheter containing the self-centering device and the guidewire into the patient; directing the guide catheter to a target site within the patient; causing the self-centering device to emerge from a distal end of the guide catheter, wherein the self-centering device reconfigures from the low-profile configuration to the expanded configuration when the self-centering device emerges from the guide catheter; and causing the guidewire to emerge from a distal end of the guide catheter. - View Dependent Claims (11, 12)
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13. (canceled)
Specification