Video laryngoscope with detachable light and image guides

• US 20050148821A1
• Filed: 02/28/2005
• Published: 07/07/2005
• Est. Priority Date: 10/14/1999
• Status: Active Grant

• Current Assignee: Andre Ehrhardt, Daniel Mattsson-Boze, David Chatenever, George Berci, James P. Barry, Jurgen Rudischhauser, Klaus M. Irion, Marshal B. Kaplan
• Original Assignee: Andre Ehrhardt, Daniel Mattsson-Boze, David Chatenever, George Berci, James P. Barry, Jurgen Rudischhauser, Klaus M. Irion, Marshal B. Kaplan
• Inventors: Ehrhardt, Andre, Chatenever, David, Irion, Klaus M., Barry, James P., Berci, George, Mattsson-Boze, Daniel, Kaplan, Marshal B., Rudischhauser, Jurgen
• Granted Patent: US 7,044,909 B2
• Time in Patent Office: Days
• US Class Current: 600/188
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/00188 with focusing or zooming features
• CPC Class Codes: A61B 1/00195 with eyepieces
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/07 using light-conductive means, e.g. optical fibres
• CPC Class Codes: A61B 1/267 for the respiratory tract, e.g. laryngoscopes, bronchoscopes
• CPC Class Codes: G02B 23/2484 Arrangements in relation to a camera or imaging device processing or control of video signals generated by an endoscope H04N23/60, H04N23/70
• CPC Class Codes: G03B 17/48 adapted for combination with other photographic or optical apparatus

Abstract

A combination laryngoscope and video display for providing images of the area ahead of the laryngoscope to facilitate insertion without damaging the surrounding tissue; the laryngoscope having a detachable blade and a rigid, detachable light and image guide attachment device for providing illuminating light ahead of the blade and for detecting the reflected light.

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32. A video laryngoscope comprising:

a handle including a first light guide and a first image guide;

a first connector associated with said handle, said first connector terminating the first light guide and the first image guide;

a blade coupled to one end of said handle, said blade including a second light guide and a second image guide;

a second connector associated with said blade, said second connector terminating the second light guide and the second image guide;

said first connector being engagable with said second connector such that the first light guide and the first image guide are in communication with the second light guide and the second image guide respectively, when said first connector is engaged with said second connector.

33. The video laryngoscope according to claim 32 further comprising a light source for generating illuminating light and a camera for generating an image signal.

34. The video laryngoscope according to claim 33 wherein said illuminating light is transmitted to an area ahead of said blade via the first and second light guide.

35. The video laryngoscope according to claim 34 wherein reflected light from the area ahead of said blade is transmitted back to said camera via the first and second image guides.

36. The video laryngoscope according to claim 35 wherein said camera generates the image signal based on the reflected light received via the first and second image guides.

37. The video laryngoscope according to claim 33 further comprising a video screen coupled to said camera.

38. The video laryngoscope according to claim 37 wherein said video screen receives the image signal generated by said camera and displays a visual representation of the area ahead of said blade.

39. The video laryngoscope according to claim 33 wherein said camera is positioned within said handle.

40. The video laryngoscope according to claim 33 wherein said light source is positioned within said handle.

41. The video laryngoscope according to claim 33 further comprising a source of electrical power for powering said light source.

42. The video laryngoscope according to claim 41 wherein said source of electrical power is positioned within said handle.

43. The video laryngoscope according to claim 32 wherein said blade is disposable.

44. The video laryngoscope according to claim 32 further comprising a locking element for securing said blade to said handle.

45. The video laryngoscope according to claim 32 wherein said second light guide and said second image guide are non-removably positioned within said blade.

46. A method for displaying an image representative of an area ahead of a laryngoscope comprising the steps of:

positioning a first light guide and a first image guide within a handle;

terminating the first light guide and the first image guide in a first connector that is associated with the handle;

positioning a second light guide and a second image guide within a blade;

terminating the second light guide and the second image guide in a second connector that is associated with the blade;

attaching the blade to the handle;

coupling the first light guide and the first image guide to the second light guide and the second image guide respectively via the first and second connectors;

transmitting illuminating light via the first and second light guides to an area ahead of the blade;

transmitting reflected light via the first and second image guides to a camera positioned in the handle;

generating a video image of representative of the received reflected light;

displaying the video image on a video screen.