# US 7,608,040 B1 · Device to aid in placing tracheal tubes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,608,040 B1 - Document ID: US7608040B1 - Status: Granted - Kind: B1 - Application number: 10/783,093 - Filed: 2004-02-23 - Granted: 2009-10-27 - Earliest claimed: 2003-02-24 - Assignees: City of Hope - Inventors: Mordecai Dunst - Web page: https://patentgrep.com/patent/US7608040B1 ## CPC - A61B 1/267: for the respiratory tract, e.g. laryngoscopes or bronchoscopes - A61B 1/012: characterised by internal passages or accessories therefor - A61B 1/06: with illuminating arrangements - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A laryngoscope includes a blade assembly with a base that is coupled to a handle. Attached to the blade assembly are two hollow guide tubes that generally follow along the longitudinal axis of the blade assembly. The two tubes are oriented at different angles of attack for directing aspirating and/or oxygenating tubes into different regions of the patient's oral cavity. The handle has an ergonomic shape to conform to the user's hand, thereby facilitating the user's application of a downward force necessary to effect laryngeal suspension. A tube extension/retraction mechanism effects user-controlled powered movement of an aspiration/oxygenation tube into or out of the patient's oral cavity. A bayonette connection is provided for connecting the blade assembly to the handle. ## Claims ### Claim 1 A blade assembly for a laryngoscope including a handle, said blade assembly comprising: base for coupling to the handle; an elongated blade secured to the base, said elongated blade having a proximal end, a distal end, an upper surface, and a lower surface, said lower surface of said elongated blade being secured to said base at said proximal end; a first guide tube affixed to said elongated blade and having a proximal end and a distal end; and a second guide tube affixed to said elongated blade adjacent said first guide tube and having a proximal end and a distal end, wherein said first and second guide tubes are constructed and arranged to direct tubes extended therethrough into the oral cavity of a patient; said first guide tube is substantially straight along its entire length and said second guide tube has a curved portion; and said elongated blade is curved, the curved portion of the second guide tube is curved in general conformity to the curvature of the elongated blade, and the first guide tube is not curved in general conformity to the curvature of the blade because said first guide tube is substantially straight along its entire length. ### Claim 2 (depends on 1) The blade assembly of claim 1, further comprising a light attached to said elongated blade. ### Claim 3 (depends on 1) The blade assembly of claim 1, further comprising a tongue deflector having a portion extending in a direction transverse to the upper surface of the elongated blade along a marginal edge segment of said elongated blade. ### Claim 4 (depends on 1) The blade assembly of claim 1, wherein said first and second guide tubes are oriented at different angles of attack with respect to said elongated blade so that when said elongated blade is placed atop the tongue of a patient to effect laryngeal suspension, said first and second guide tubes direct respective tubes extended therethrough into different regions of the patient's oral cavity. ### Claim 5 (depends on 1) The blade assembly of claim 1, wherein the proximal end of the first guide tube and the proximal end of the second guide tube are both positioned at the proximal end of the elongated blade. ### Claim 6 (depends on 5) The blade assembly of claim 5, wherein the distal end of the first guide tube and the distal end of the second guide tube are both positioned at about the midpoint of the elongated blade. ### Claim 7 (depends on 1) The blade assembly of claim 1, wherein the center of the distal end of the first guide tube is disposed above the center of the distal end of the second guide tube relative to the upper surface of the elongated blade. ### Claim 8 (depends on 7) The blade assembly of claim 7, wherein the center of the proximal end of the first guide tube is disposed below the center of the proximal end of the second guide tube relative to the upper surface of the elongated blade. ### Claim 9 (depends on 1) The blade assembly of claim 1, further comprising a first aspiration tube inserted into the first guide tube and a second aspiration tube inserted into the second guide tube. ### Claim 10 (depends on 1) The blade assembly of claim 1, wherein said blade does not have an opening at its distal end. ### Claim 11 (depends on 1) The blade assembly of claim 1, wherein said blade is not hollow. ### Claim 12 (depends on 1) The blade assembly of claim 1, wherein said blade is not in the form of a tube. ### Claim 13 An assembly, comprising: a base; an elongated blade secured to the base, said elongated blade having a proximal end, a distal end, an upper surface, and a lower surface, said lower surface of said elongated blade being secured to said base at said proximal end; a first guide means for guiding a first aspiration tube to a patient's laryngeal gutter, said first guide means being affixed to said elongated blade; and a second guide means for guiding a second aspiration tube to a patient's glottic aperture, said second guide means being affixed to said elongated blade, wherein said first guide means is substantially straight along its entire length and said second guide means has a curved portion; and said elongated blade is curved, the curved portion of the second guide means is curved in general conformity to the curvature of the elongated blade, and the first guide means is not curved in general conformity to the curvature of the blade because said first guide means is substantially straight along its entire length. ### Claim 14 (depends on 13) The assembly of claim 13, wherein said first guide means comprises a first guide tube having a proximal end and a distal end and said second guide means comprises a second guide tube having a proximal end and a distal end. ### Claim 15 (depends on 14) The assembly of claim 14, wherein the proximal end of the first guide tube and the proximal end of the second guide tube are both positioned at the proximal end of the elongated blade. ### Claim 16 (depends on 15) The assembly of claim 15, wherein the distal end of the first guide tube and the distal end of the second guide tube are both positioned at about the midpoint of the elongated blade. ### Claim 17 (depends on 14) The assembly of claim 14, wherein the center of the distal end of the first guide tube is disposed above the center of the distal end of the second guide tube relative to the upper surface of the elongated blade, and wherein the center of the proximal end of the first guide tube is disposed below the center of the proximal end of the second guide tube relative to the upper surface of the elongated blade. ### Claim 18 (depends on 14) The assembly of claim 14, further comprising a first aspiration tube inserted into the first guide tube and a second aspiration tube inserted into the second guide tube. ### Claim 19 (depends on 14) The assembly of claim 14, wherein said first and second guide tubes are oriented at different angles of attack with respect to said elongated blade. ### Claim 20 (depends on 14) The assembly of claim 14, wherein said first guide tube is substantially straight and said second guide tube has a curved portion. ### Claim 21 (depends on 20) The assembly of claim 20, wherein said elongated blade is curved and said curved portion of the second guide tube follows the curve of the elongated blade.