Patents Assigned to Evergreen Medical Incorporated
  • Patent number: 6895966
    Abstract: A laryngeal mask airway has a curved tubular guide for insertion through the patient's mouth and oropharynx. After insertion of the guide, the beveled distal opening of the guide abuts the laryngeal inlet, while the guide's proximal opening remains outside the patient's mouth. A laryngeal mask surrounds the distal opening of the guide to substantially seal the laryngeal inlet about the distal opening of the guide. A ventilation port adjacent to the proximal opening of the guide supplies air/oxygen through the guide into the patient's lungs. An endotracheal tube can then be advanced along the length of guide and through the patient's larynx without interrupting ventilation.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: May 24, 2005
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6860264
    Abstract: A method and apparatus for endotracheal intubation with simultaneous oxygenation/ventilation employs a curved guide and a light wand to ensure proper placement of the endotracheal tube in the patient's airway. The light wand has an elongated flexible member with a light source at its distal tip. The wand is inserted through an endotracheal tube until the light is adjacent to the distal end of the endotracheal tube. A curved guide is inserted into the patient's mouth and upper airway so that its distal end is positioned above the larynx. The wand and endotracheal tube are then advanced along the guide until the distal end of the endotracheal tube passes through the larynx and the light source is externally observable at a predetermined location through the anterior tracheal wall.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: March 1, 2005
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6668821
    Abstract: A laryngeal mask airway has a curved tubular guide for insertion through the patient's mouth and oropharynx. After insertion of the guide, the beveled distal opening of the guide abuts the laryngeal inlet, while the guide's proximal opening remains outside the patient's mouth. A laryngeal mask surrounds the distal opening of the guide to substantially seal the laryngeal inlet about the distal opening of the guide A ventilation port adjacent to the proximal opening of the guide supplies air/oxygen through the guide into the patient's lungs. An endotracheal tube can then be advanced along the length of guide and through the patient's larynx without interrupting ventilation.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: December 30, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6634354
    Abstract: A laryngeal mask airway has a curved tubular guide for insertion through the patient's mouth and oropharynx. After insertion of the guide, the beveled distal opening of the guide abuts the laryngeal inlet, while the guide's proximal opening remains outside the patient's mouth. A laryngeal mask surrounds the distal opening of the guide to substantially seal the laryngeal inlet about the distal opening of the guide. A ventilation port adjacent to the proximal opening of the guide supplies air/oxygen through the guide into the patient's lungs. An endotracheal tube can then be advanced along the length of guide and through the patient's larynx without interrupting ventilation.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: October 21, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6631713
    Abstract: An endotracheal tube can be inserted into a patient's trachea during resuscitation by using a face mask and a curved guide. The guide is inserted through a flexible port in the face mask and has a curved distal portion that extends into the patient's mouth and hypopharynx. The patient is initially resuscitated by supplying a flow of air/oxygen through the mask. For example, a resuscitation bag can be connected to a rotatable ventilation port on the face mask. Alternatively, a resuscitation attachment with an air filter and one-way valve can be removably attached to the ventilation port of the face mask to enable a health care provider to directly resuscitate the patient. An endotracheal tube is inserted over the distal end of a fiber optic probe.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: October 14, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6585642
    Abstract: An endoscope has a removable suction tube to facilitate cleaning and reduce the risk of patient infection. The endoscope includes an elongated flexible probe with a housing at its proximal end to control the direction and operation of the probe and for viewing images carried by optical fibers from the distal end of the probe. A recess or slot extending along either the suction tube or probe enables the suction tube to be removably secured to the probe. A suction tube connector at the proximal end of the suction tube allows the suction tube to be removably secured to the housing and also provides a connector for removable attachment to an external suction line. In the preferred embodiment, the suction tube connector includes means for regulating suction through the suction tube, such as a vent opening that can be manually sealed by a healthcare provider.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: July 1, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6568393
    Abstract: An endotracheal tube has a beveled distal end with a tip on the posterior wall of the endotracheal tube, and a visual indicator extending along the endotracheal tube. The visual indicator can be a radio-opaque stripe extending the length of the anterior and/or posterior wall of the endotracheal tube. The leading edge of the distal tip of the endotracheal tube can be curved in the anterior direction to reduce the risk to trauma to the patient's airway. The distal end of the endotracheal tube is inserted into the patient's mouth so that the visual indicator remains visible to the healthcare provider when viewed from above. The healthcare provider advances the endotracheal tube into the patient's airway while monitoring the position of the visual indicator to ensure that the tip at the distal end of the endotracheal tube passes through the midline of the wider posterior portion of the opening in the patient's larynx.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: May 27, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6568388
    Abstract: A method and apparatus for guiding insertion of an endotracheal tube into a patient's trachea simultaneously allows a continued supply of air/oxygen to be delivered into the patient's airway and lungs. A guide having a curved distal portion is inserted into the patient's mouth and hypopharynx. A second lumen extending along the guide is used to supply air/oxygen into the patient's airway and to flush carbon dioxide from the lungs. A fiber optic probe is inserted through an endotracheal tube and this assembly is advanced along the guide into the patient's airway, while ventilation continues without interruption through the second lumen. The direction of the distal tip of the fiber optic probe can be controlled by the physician. This allows the physician to carefully guide the fiber optic probe and endotracheal tube to a position past the larynx while ventilation continues.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: May 27, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6543446
    Abstract: An endotracheal tube can be inserted into a patient's trachea during resuscitation by using a face mask and a curved guide. The guide is inserted through a flexible port in the face mask and has a curved distal portion that extends into the patient's mouth and hypopharynx. The patient is initially resuscitated by supplying a flow of air/oxygen through the mask. For example, a resuscitation bag can be connected to a rotatable ventilation port on the face mask. Alternatively, a resuscitation attachment with an air filter and one-way valve can be removably attached to the ventilation port of the face mask to enable a health care provider to directly resuscitate the patient. An endotracheal tube is inserted over the distal end of a fiber optic probe.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: April 8, 2003
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6378523
    Abstract: A method and apparatus for intubation of a patient's airway uses an endotracheal tube having a beveled distal end with a tip on the posterior wall of the endotracheal tube, and a visual indicator extending along the endotracheal tube. For example, the visual indicator can be a radio-opaque stripe extending the length of the anterior and/or posterior wall of the endotracheal tube. To use the apparatus with the patient in a supine position, the healthcare provider first takes a position above the patient's head. The distal end of the endotracheal tube is then inserted into the patient's mouth so that the visual indicator remains visible to the healthcare provider when viewed from above. The healthcare provider advances the endotracheal tube into the patient's airway while monitoring the position of the visual indicator to ensure that the tip at the distal end of the endotracheal tube passes through the midline of the wider posterior portion of the opening in the patient's larynx.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: April 30, 2002
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher
  • Patent number: 6340344
    Abstract: An endoscope has a removable suction tube to facilitate cleaning and reduce the risk of patient infection. The endoscope includes an elongated flexible probe with a slot extending along its length and an opening on the distal end of the probe. The housing at the proximal end of the probe is used to control the direction and operation of the probe, and for viewing images from the distal end of the probe. The suction tube can be removably inserted into the slot on the probe. Optionally, the distal tip of the probe can be equipped with a connector within the slot that removably secures the distal opening of the suction tube in communication with a suction opening on the distal tip of the probe. A suction tube connector at the proximal end of the suction tube allows the suction tube to be removably secured to the housing and also provides a connector for removable attachment to an external suction line.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: January 22, 2002
    Assignee: Evergreen Medical Incorporated
    Inventor: Kent L. Christopher