Patents Assigned to Andros, Incorporated
  • Patent number: 4140118
    Abstract: A cassette is described for use in an intravenous delivery system having a pump. The volume of a main chamber defined by the cassette body is varied and unidirectional inlet and outlet valves maintain the fluid direction into and out of the main chamber. In the operating position of the cassette, the outlet valve is positioned to be in communication with any gas present in the main chamber. For the purpose of accumulating air from the upstream portion of the intravenous delivery system in which the cassette is used, a prechamber is positioned above the inlet port communicating therewith.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: February 20, 1979
    Assignee: Andros Incorporated
    Inventor: Jal S. Jassawalla
  • Patent number: 4126132
    Abstract: An intravenous and intra arterial delivery system is described having a disposable cassette actuated by a pump and control electronics for providing positive but variable delivery rates. The cassette is self-priming and provides protection against the delivery of air by being unable to impel air, and means provide an indication of excessive air in the cassette. The electronics has low power consumption so as to be suitable for battery operation, such as by way of rechargeable batteries. A pressure sensor in the delivery line may be used to sense infiltration. The system further features a provision for predetermining the amount of fluid to be delivered, and a detection system for detecting an empty supply bottle.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: November 21, 1978
    Assignee: Andros Incorporated
    Inventors: Peer M. Portner, Jal S. Jassawalla
  • Patent number: 4103174
    Abstract: An improved gas analyzer for measuring the presence of one or more gaseous compounds in a gas sample. The gas analyzer has an infrared source stablized against temperature variations by a radiation loading scheme in combination with a selected source environmental temperature sensitivity to provide a stable source temperature without a conventional temperature controller. A rotating interference filter assembly is disposed in the optical path. This assembly alternately totally blocks radiation, passes radiation in a wave length band which will not be absorbed by a random gas sample, and sequentially passes radiation in one or more additional bands which will be absorbed by one or more gases in the sample cell. The sample cell features a unique enclosed cell with infrared transparent windows which are substantially free of impingement of contaminants of the gas sample thereon. A unique detector provides protection against deterioration from moisture while allowing easy and inexpensive assembly.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: July 25, 1978
    Assignee: Andros, Incorporated
    Inventors: Edward A. McClatchie, Dean A. Watson, Irvin G. Burough
  • Patent number: 4083367
    Abstract: A method and apparatus for analyzing pulmonary function including diffusing capacity and cardiac output or local pulmonary blood flow while necessarily determining alveolar volume in order to complete the above-noted analysis. In order to provide a rapid response in each of the abovenoted analyses or determinations, appropriate gases are caused to be inhaled and exhaled through a sample cell wherein a percentage of each gas may be constantly monitored during inhalation and exhalation by means of non-dispersive infrared absorption techniques, the sample cell and associated components of the pulmonary function analyzing device including additional features to facilitate the abovenoted analyses and determinations, the combination of gases employed for monitoring the pulmonary functions being selected to permit accurate detection by infrared absorption techniques.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: April 11, 1978
    Assignee: Andros Incorporated
    Inventors: Peer M. Portner, David H. LaForge
  • Patent number: 4027972
    Abstract: A method and apparatus are described for determining relative amounts of first and second gases in an unknown mixture of gases. Radiant energy is directed serially through reference volumes of the first and second gases and a volume of the unknown gas. The absorption of the radiant energy by the respective gas volumes is varied at different frequencies. The amount of radiant energy passing through the respective gas volumes is detected and a signal is developed representative of the ratio of the amounts of the first and second gases.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: June 7, 1977
    Assignee: Andros Incorporated
    Inventor: Donald W. Davies
  • Patent number: 4018223
    Abstract: A dosage control device, particularly suited for use by persons with impaired vision who from time to time may give themselves injections such as diabetic. The dosage control device is a sheet like, elongated plastic member having a transverse slot for snapping over the finger projections on the end of a standard hypodermic syringe. A scale is provided in a predetermined disposition with respect to the slot so that when the device in conjunction with the outer end of the plunger duplicates the normal scale on the syringe. In use, a doctor or other person would cut off the outward extending end of the device at the scale marking for the desired dosage, so that the diabetic could control his dosage by feel rather than sight.
    Type: Grant
    Filed: December 9, 1974
    Date of Patent: April 19, 1977
    Assignee: Andros Incorporated
    Inventor: Gayle M. Ethington
  • Patent number: 4013260
    Abstract: An improved gas analyzer for measuring the presence of one or more gaseous compounds in a gas sample. The gas analyzer has an infrared source stabilized against temperature variations by a radiation loading scheme in combination with a selected source environmental temperature sensitivity to provide a stable source temperature without a conventional temperature controller. A rotating interference filter assembly is disposed in the optical path. This assembly alternately totally blocks radiation, passes radiation in a wave length band which will not be absorbed by a random gas sample, and sequentially passes radiation in one or more additional bands which will be absorbed by one or more gases in the sample cell. The sample cell features a unique enclosed cell with infrared transparent windows which are substantially free of impingement of contaminants of the gas sample thereon. A unique detector provides protection against deterioration from moisture while allowing easy and inexpensive assembly.
    Type: Grant
    Filed: September 27, 1974
    Date of Patent: March 22, 1977
    Assignee: Andros, Incorporated
    Inventors: Edward A. McClatchie, Dean A. Watson, Irvin G. Burough