Endoscopic methods and devices for transnasal procedures
First Claim
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1. A method for positioning a working device at a desired location within the ear, nose, throat or cranium of a human or animal subject, said method comprising the steps of:
- (A) inserting an endoscope into a first channel of a guide device, wherein the first channel comprises a first tube including a first outer wall and a first inner wall defining a first lumen;
(B) inserting the guide device, with the endoscope inserted in the first channel thereof, into or through a nostril of the subject so as to guide the insertion of the guide device using the endoscope;
(C) inserting the working device into a second channel of the guide device, wherein the working device includes a guidewire, wherein the second channel comprises a second tube including a second outer wall and a second inner wall defining a second lumen, wherein the second tube is disposed alongside the first tube such that a portion of the first outer wall is adjacent to a portion of the second outer wall, wherein the second channel includes a first portion that extends at an angle relative to the first channel and a second portion that extends parallel to the first channel, wherein the first channel and the second channel are angularly fixed relative to one another;
(D) advancing the endoscope relative to the first channel such that an end of the endoscope exits from a distal end of the guide device;
(E) using the endoscope to view, guide or verify the positioning of the guide device and/or the guidewire;
(F) advancing a second working device over the guidewire; and
(G) treating the desired location by dilating anatomical structure at the desired location.
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Abstract
Medical devices, systems and methods that are useable to facilitate transnasal insertion and positioning of guidewires and various other devices and instruments at desired locations within the ear, nose, throat, paranasal sinuses or cranium.
934 Citations
16 Claims
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1. A method for positioning a working device at a desired location within the ear, nose, throat or cranium of a human or animal subject, said method comprising the steps of:
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(A) inserting an endoscope into a first channel of a guide device, wherein the first channel comprises a first tube including a first outer wall and a first inner wall defining a first lumen; (B) inserting the guide device, with the endoscope inserted in the first channel thereof, into or through a nostril of the subject so as to guide the insertion of the guide device using the endoscope; (C) inserting the working device into a second channel of the guide device, wherein the working device includes a guidewire, wherein the second channel comprises a second tube including a second outer wall and a second inner wall defining a second lumen, wherein the second tube is disposed alongside the first tube such that a portion of the first outer wall is adjacent to a portion of the second outer wall, wherein the second channel includes a first portion that extends at an angle relative to the first channel and a second portion that extends parallel to the first channel, wherein the first channel and the second channel are angularly fixed relative to one another; (D) advancing the endoscope relative to the first channel such that an end of the endoscope exits from a distal end of the guide device; (E) using the endoscope to view, guide or verify the positioning of the guide device and/or the guidewire; (F) advancing a second working device over the guidewire; and (G) treating the desired location by dilating anatomical structure at the desired location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for positioning a guidewire at a desired location within the ear, nose, throat, or cranium of a human or animal subject, said method comprising the steps of:
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(A) inserting an endoscope into a first channel of a guide device along a first axis, wherein the first channel comprises a first tube including a first outer wall and a first inner wall defining a first lumen; (B) inserting the guide device, with the endoscope inserted into the first channel thereof, into a nostril of the subject so as to guide the insertion of the guide device using the endoscope; (C) inserting the guidewire into a second channel of the guide device along a second axis, wherein the second channel comprises a second tube including a second outer wall and a second inner wall defining a second lumen, wherein the second tube is disposed alongside the first tube such that a portion of the first outer wall is adjacent to a portion of the second outer wall, wherein the first and second axes are oriented at a fixed, acute angle relative to one another in order to provide space for the insertion of the endoscope and guidewire into the first channel and second channel, respectively; and (D) advancing the endoscope relative to the first channel such that an end of the endoscope exits from a distal end of the guide device; and (E) using the endoscope to view, guide or verify the positioning of the guide device and/or the guidewire.
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Specification