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Jephthae W Burwell

from Washington, DC

Jephthae Burwell Phones & Addresses

  • Washington, DC

Us Patents

  • Pressurized Ventilation System For Patients

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  • US Patent:
    48056090, Feb 21, 1989
  • Filed:
    Jul 17, 1987
  • Appl. No.:
    7/074867
  • Inventors:
    Josephine A. Roberts - Bethesda MD
    Jephthae W. Burwell - Washington DC
  • International Classification:
    A61M 1610
    A61M 1620
  • US Classification:
    12820021
  • Abstract:
    A novel ventilating system (10) for human patients including nebulizing means (15A) for nebulizing a liquid medication into a supply (28A, 29A) of humidified breathable gas under pressure. The nebulizing means (15A) comprises a nebulizing module having a cap portion (25) to which is attached a vial-like nebulizing chamber (54A). In order to maintain the hermetic integrity of the system (10) a two-position, flow control valve assembly (64) is operatively connected to and in selective flow communication with, a lower region of the vial-like, liquid-retention nebulizing chamber (54A). The valve assembly (64) is configured so that it can be manually actuated between a first position precluding access to chamber (54A) or a second position for drainage of liquid (59A) from within the nebulizer chamber (54A) or addition of liquid to such chamber while maintaining system sealing and pressure. A liquid handling means such as a syringe (68) is used to control withdrawal or addition of liquid.
  • Pressurized Medical Ventilation System

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  • US Patent:
    51198070, Jun 9, 1992
  • Filed:
    May 9, 1989
  • Appl. No.:
    7/349216
  • Inventors:
    Josephine A. Roberts - Bethesda MD
    Jephthae W. Burwell - Washington DC
  • International Classification:
    A61M 1106
    A62B 902
    A62B 710
    A62B 2302
  • US Classification:
    12820024
  • Abstract:
    A pressurized ventilation system to supplement patient respiration which enables introduction and atomization of prescribed liquids and removal of condensation while maintaining pressurization and functions of the ventilation system and minimizing hazards due to contamination. An atomizer outlet is positioned to enable entrainment of atomized particles of the prescribed liquid into the breathable gas flowing to the patient. A novel arrangement of a valve and conduit provides for contamination-free attachment of a syringe or unit dose vial for the introduction of the prescribed liquid. An enclosure means for trapping condensate and control means for safe removal of condensate from the system are provided. The ventilation system, with the improved arrangement, provides novel functions and can be operated and maintained more conveniently and expeditiously than prior art ventilator system while reducing the risk of infection for both the patient and the attendant.
  • Positive-Pressure Ventilator System With Controlled Access For Nebulizer Component Servicing

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  • US Patent:
    53885716, Feb 14, 1995
  • Filed:
    Dec 9, 1992
  • Appl. No.:
    7/988031
  • Inventors:
    Josephine A. Roberts - Bethesda MD
    Jephthae W. Burwell - Washington DC
  • International Classification:
    A61M 1500
    A61M 1610
  • US Classification:
    12820312
  • Abstract:
    A nebulizer component, interconnected in the inspiratory flow path, includes an interior chamber with a lower region for storing liquid medicine at system pressures and an upper region containing a nebulizer (jet atomizer and baffle) for periodically nebulizing the liquid medicine for producing a fog of nebulized particles suspended in gas which mix with the breathable gas which flows through the chamber to the patient. Medical apparatus for removing any potentially contaminated residual medicine or condensed liquid from the lower region, for introducing liquid medicine for storage in the lower region for a subsequent nebulizer treatment, and for immediate introduction of nebulized liquid medicine during any bronchospasm crises are provided in order to maintain the pressures and function of the system, prevent the spread of contamination into the ventilator system or out of the system to attendants and others in the surrounding ambient environment, and eliminate sources of potentially life-threatening accidents during such removal and introduction. Specific embodiments include a novel liquid medicine vial, an adapter for a probe-activated valve, and specific arrangements of flow-paths, valves, and connectors to provide for maintaining pressures and function and for preventing spread of contamination during such removal and introductions for a ventilator system which is more economical and less labor intensive to operate.

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