Fluid Having Simultaneous Diverse Function Patents (Class 422/293)
  • Patent number: 9039990
    Abstract: The present invention relates to a ventilator autoclave comprising a chamber (1) with a space (5) for receiving goods (18) to be sterilized, at least one fan arrangement (2) for circulating steam and/or air in said chamber, and at least one first heat exchanger arrangement (11) for cooling and/or heating said steam and/or air, wherein said fan arrangement is arranged and configured to circulate said steam and/or air in said chamber (1), wherein said chamber (1) is configured such that said steam and/or air that is circulated in said chamber (1) follows a flow path passing at least a part of said first heat exchanger arrangement (11) before reaching said goods (18) to be sterilized, wherein said autoclave further comprises at least one second heat exchanger arrangement (19) that is provided upstream of said first heat exchanger arrangement (11) in said flow path, and wherein said second heat exchanger arrangement (19) is provided at such a distance from the periphery of said fan arrangement (2) that said flow
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 26, 2015
    Assignee: GETINGE STERILIZATION AB
    Inventor: Bengt Storberg
  • Patent number: 8383035
    Abstract: A system and method of removing odors by adsorbing steam vapor and exhausting the odors by generating a forcible flow is provided. The system may include a rotatable drum for receiving items to be deodorized, a steam generator for supplying steam to the drum, and a passage for generating a forcible flow through the drum. The method may include adsorbing steam generated by the steam generator by the items to be deodorized, and exhausting the adsorbed steam using the forcible flow through the drum.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: February 26, 2013
    Assignee: LG Electronics Inc.
    Inventors: Pyoung-Hwan Kim, Young-Soo Kim
  • Patent number: 8268451
    Abstract: A material intended for personal protective equipment, such as a suit for escaping chemicals or a flash fire is disclosed, wherein the material includes at least four different layers, the layers being: an outer first layer of a material comprising at least one polymer, which material is self-extinguishing; a second layer of a fiber material, which fiber material is self-extinguishing; a third layer being adhesive; and an inner fourth layer being a barrier laminate. All of the at least four different layers individually are attached to layers located next to them.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: September 18, 2012
    Assignee: Ansell Protective Solutions AB
    Inventor: Pontus Danielsson
  • Patent number: 8168132
    Abstract: An apparatus and method for drying instruments using superheated steam is disclosed. The apparatus comprises a chamber for receiving the instruments, a distribution means for distributing superheated steam within the chamber and an exhaust means for purging vaporized moisture from the chamber. The chamber has at least one inlet port which is connected to the distribution means. The method comprises sterilizing the instruments using saturated steam generated by the steam generation means and drying the instruments using superheated steam generated by the steam generation means to vaporize moisture within the chamber and purging the vaporized moisture from the chamber using the exhaust means.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: May 1, 2012
    Assignee: SciCan Ltd.
    Inventors: Arthur Zwingenberger, Gabriel Gheorghe Naghi, David Bryant Snaith, Jeffrey G. Dayman, Andy Kwan-Leung Sun, Michel Stanier
  • Publication number: 20110091362
    Abstract: A method and apparatus for eliminating mold spores, pathogens and odor from material like equine bedding. The apparatus includes two or more pairs of augers including blades to control the size of the material and to move it in a zigzag fashion through heat.
    Type: Application
    Filed: October 20, 2009
    Publication date: April 21, 2011
    Inventor: Philip Graham Wilford
  • Publication number: 20100166603
    Abstract: A system for sterilizing a powder includes a device for agitating the powder during application of a sterilizing gas including nitrogen dioxide and humidity. A related method includes agitating the powder while applying the sterilizing gas.
    Type: Application
    Filed: October 29, 2009
    Publication date: July 1, 2010
    Applicant: NOXILIZER, Inc.
    Inventor: David OPIE
  • Publication number: 20100163396
    Abstract: The present invention includes systems, apparatus and methods for processing solid waste products. The present invention includes an apparatus and method of processing solid waste products in an autoclave, comprising the steps: (a) loading the autoclave with a charge of solid waste products containing water; (b) sealing the autoclave; (c) rotating the autoclave while heating the autoclave such that the charge of solid waste products containing water creates steam in the autoclave, and whereby so waste liquid water or steam and cellulosic material are produced; (d) conducting liquid water or steam from the autoclave to a water cleaning system and then to a heat recovery steam generator so as to generate steam therefrom; and (d) reintroducing the steam generated by the heat recovery steam generator into the autoclave. The system preferably is a closed loop system to conserve water.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 1, 2010
    Applicant: Estech, LLC
    Inventors: Jan K. Michalek, Theodore J. Thomas
  • Publication number: 20100075002
    Abstract: Apparatus and methods to non-thermally treat goods for human consumption with carbon dioxide. Apparatus and methods rely on multiple pressure changes of carbon dioxide to affect one of three processes. A first process rapidly freezes and thaws water on the surface of the goods in rapid succession multiple times to detrimentally affect pathogens. A second process raises the pressure and temperature of carbon dioxide to supercritical conditions to detrimentally affect the lipids in the membranes of pathogens. A third process adjusts the pressure to form a dense carbon dioxide liquid with a low pH that may also detrimentally affect pathogens. All processes may be repeated or performed in succession, or in any order. Optionally, thereafter, the goods may be stored at low temperature in substantially 100% carbon dioxide for further pathogen reduction.
    Type: Application
    Filed: November 30, 2009
    Publication date: March 25, 2010
    Applicant: SAFEFRESH TECHNOLOGIES, LLC
    Inventor: Anthony J.M. Garwood
  • Publication number: 20090311135
    Abstract: An apparatus and method for drying instruments using superheated steam is disclosed. The apparatus comprises a chamber for receiving the instruments, a distribution means for distributing superheated steam within the chamber and an exhaust means for purging vaporized moisture from the chamber. The chamber has at least one inlet port which is connected to the distribution means. The method comprises sterilizing the instruments using saturated steam generated by the steam generation means and drying the instruments using superheated steam generated by the steam generation means to vaporize moisture within the chamber and purging the vaporized moisture from the chamber using the exhaust means.
    Type: Application
    Filed: July 6, 2007
    Publication date: December 17, 2009
    Inventors: Arthur Zwingenberger, Gabriel Gheorghe Naghi, David Bryant Snaith, Jeffrey G. Dayman, Andy Kwan-Leung Sun, Michel Stanier
  • Publication number: 20090098184
    Abstract: Methods and systems for providing an improved apparatus and packaging system to more expeditiously hydrate or reconstitute medical grafts and to effectively and uniformly seed the medical grafts with biological components and cells. The systems generally comprise a container comprising entry port, at least one substrate cavity, and top, side and bottom walls defining an inner surface. The entry port is configured to receive the biological solution. The cavity is in communication with the entry port and includes the porous substrate maintained under negative pressure. The container volume is substantially the same as a volume of the porous substrate. The side and bottom walls are configured to promote a laminar flow of the biological solution received through the entry port.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 16, 2009
    Inventors: Amit Govil, Neil Irvin Thompson, Christian Gabriel Gamboa, Sudhanshu Somasundar
  • Publication number: 20080279736
    Abstract: An apparatus for the low energy vaporization of oxidizing agents, such as hydrogen peroxide and peracetic acid, relate to an apparatus comprising a storage tank containing a liquid oxidizing agent or solution, a vaporizer operatively connected to the storage tank for receiving the liquid through a flow control valve and vaporizing the liquid oxidizing agent or solution, a vessel having a vacuum applied thereto with the vessel being operatively connected to the vaporizer so that a vacuum is also applied thereto, and a pressure sensor in said vessel for detecting the partial vapor pressure of the oxidizing agent. A microprocessor is programmed to receive a signal from the vessel pressure sensor and to close the flow control valve upon the vessel reaching a predetermined pressure level so as to prevent condensation of the oxidizing agent and the vessel.
    Type: Application
    Filed: July 18, 2008
    Publication date: November 13, 2008
    Inventors: Georg Frinke, Ralph Gross, Hubert Kluetsch, Gerald McDonnell
  • Publication number: 20080216870
    Abstract: A surface of a target item is treated by directing a flow of solid carbon dioxide entrained in ozone towards it.
    Type: Application
    Filed: January 18, 2008
    Publication date: September 11, 2008
    Applicant: Air Liquid Industrial U.S. LP
    Inventor: Ronald J. MERRITELLO
  • Patent number: 7402290
    Abstract: Methods and apparatus are disclosed for mixing fluid streams of different compositions to minimize fluid condensation inside a mixing vessel where the objective is to produce an all-vapor mixture product.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: July 22, 2008
    Assignee: Stone & Webster Process Technology Inc.
    Inventors: Douglas S. Hubbell, Dino Pizzelli, Edward P. Hunt, Glenn D. Nasman
  • Patent number: 7186374
    Abstract: A flash vapor generator (10) provides a constant flow of vaporized hydrogen peroxide for rapidly sterilizing a large decontamination tunnel (11) with a high container throughput. The vaporizer includes a heated block which defines an interior bore or bores. The conditions within the decontamination tunnel are carefully monitored to avoid condensation of the vapor while maintaining the vapor as close as possible to the saturation limit.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: March 6, 2007
    Assignee: Steris Inc.
    Inventors: Francis J. Zelina, Gerald E. McDonnell, Aaron L. Hill, Thaddeus Mielnik, Iain F. McVey, Peter J. Buczynski
  • Patent number: 7138087
    Abstract: A system for reprocessing flexible endoscopes having lumen therein. The reprocessing system deploys steam to disinfect and/or sterilize the endoscopes, and designs, components and methods for reducing or balancing the reprocessing cycle time and the effects of thermal expansion and contraction on the endoscopes.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: November 21, 2006
    Assignee: Minntech Corporation
    Inventors: Roy K. Malkin, Roland C. Kippenhan, Jr., Michael P. Petersen, Thomas L. Fenton
  • Patent number: 7048887
    Abstract: In a process for sterilizing objects, the surfaces of the objects are dampened by condensating a steam compound of water and hydrogen peroxide. The steam compound reaches hereby the objects to be sterilized without any additional transport gas flow. Subsequent drying occurs by means of evacuation at a pressure below the boiling points of water and hydrogen peroxide.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 23, 2006
    Assignee: Ruediger Haaga GmbH
    Inventors: Robert Frost, Peter Awakowicz
  • Patent number: 6916445
    Abstract: A system for irradiating mail, comprising a device for conveying mail along a predetermined path and a device for irradiating the mail moving along the path with a beam of electrons. An apparatus for chilling the mail is provided along the path. The apparatus exposes the mail to a low-temperature, gaseous fluid created using a cryogenic fluid.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: July 12, 2005
    Assignee: STERIS Inc.
    Inventors: Michael A. Centanni, Mark Kusner
  • Patent number: 6821480
    Abstract: A self-cleaning system for delivering sanitized water to a workstation has a boiler which produces heat-sanitized water and steam. A diverter valve permits a fluid delivery line of the system to convey either sanitized water or steam to a workstation. The steam serves to sanitize the delivery line and workstation and removes biofilms therefrom.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: November 23, 2004
    Inventors: James N. Suddath, William Piskorowski, Jerome J. Kasbrick
  • Publication number: 20040213698
    Abstract: An apparatus and method for electrochemically generating and using an aqueous solution containing chlorine dichloride and a metal hypochlorite, such as sodium hypochlorite. The aqueous solution provides a mouth rinse for oral hygiene or a sterilizing solution for surgical or dental tools or for treating drinking water. The generator comprises a chamber, an anode and a cathode disposed for fluid communication with a reservoir, and an electrical power source for applying a voltage between the anode and the cathode. The reservoir contains an electrolyte having a metal chlorite and, optionally, a metal chloride, citric acid, sweeteners, flavorings and combinations thereof. The anode is preferably a dimensionally stable anode coated with RuO2, IrO2 or combinations thereof. The cathode may be made of titanium substrate coated with platinum. The apparatus and method generate an aqueous solution containing chlorine dioxide that may be used immediately for oral hygiene.
    Type: Application
    Filed: April 25, 2003
    Publication date: October 28, 2004
    Inventors: Charles L.K. Tennakoon, Rattaya C. Yalamanchili, Elizabeth I. McGrew
  • Publication number: 20040166020
    Abstract: Apparatus and systems serve to collapse steam in effluent released from steam sterilizers and sterilizer systems. These systems include tanks or containers configured for receiving and holding fluids, for example, water, and include a fluid outlet and a port that receives the released effluent. A conduit extending into the tank from the effluent receiving port provides a path for the steam to the fluid in the tank, to collapse the steam.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Inventor: James E. Bell
  • Patent number: 6610249
    Abstract: A composition for disinfecting an animal product comprising an electro-chemically activated, anion-containing aqueous solution. A plant for treating an animal product including a water reservoir (12), a salt feed device (16) for creating an aqueous salt solution, an electrolysis device (18) to produce anolyte and catolyte solutions, an anion mixing tank (28), and a treatment container (30) to apply the solution to an animal product.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: August 26, 2003
    Assignee: Radical Waters IP (PTY) LTD
    Inventor: Gilbert Theo Hinze
  • Publication number: 20020192108
    Abstract: A sterilization container for sterilizing, storing and transporting instruments is formed of a liquid crystal polymer, such as a wholly aromatic polyester. The container is strong yet has thin walls so that condensation is minimized. Suitable polymers include wholly aromatic polyesters such as: polybenzoate-naphthalate; polybenzoate-terephthalate-bisphenol-isophthalate; polybenzoate-terephthalate-ethylene glycol; and polynaphthalate-amino terephthalate.
    Type: Application
    Filed: April 2, 2002
    Publication date: December 19, 2002
    Inventor: Su-Syin Wu
  • Publication number: 20020018735
    Abstract: A device for cleaning and sterilizing the inside of a chamber, comprising a supply of sterilizing liquid for said chamber and a device for inducing variations in the pressure, amplitude, frequency and the gradient of said variations in the sterilizing liquid, whereby said device is adapted in such a way that cavitation occurs inside the liquid, the device inducing said pressure variations include a liquid column between the chamber and a switching organ, whereby the chamber can be cyclically connected to a depression, whereby the value thereof is related to the amplitude or respectively to the atmospheric pressure.
    Type: Application
    Filed: August 2, 2001
    Publication date: February 14, 2002
    Inventor: Jordi Rossell
  • Patent number: 6268001
    Abstract: A method for preserving a food product includes the steps of placing the food product in a gastight chamber, lowering the pressure in the chamber, introducing into the chamber a first quantity of gas which at least partially penetrates the product, subsequently introducing into the chamber at least a second quantity of gas.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: July 31, 2001
    Inventor: Willem Antoon Pieter Putter
  • Patent number: 6171551
    Abstract: An electrolysis unit (10) has an ion selective barrier (20) for separating an anodic chamber (12) from a cathodic chamber (14). An electrolyte within the unit includes a precursor, such as potassium acetate, or acetic acid. A positive potential is applied to an anode (16) within the anodic chamber, resulting in the generation of a variety of shorter and longer lived oxidizing species, such as peracetic acid, hydrogen peroxide, and ozone. In one preferred embodiment, a solution containing the oxidizing species is transported to a site where articles, such as medical instruments, are to be decontaminated. The oxidizing species are generated as needed, avoiding the need to store hazardous decontaminants.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: January 9, 2001
    Assignee: Steris Corporation
    Inventors: Paul S. Malchesky, Chung-Chiun Liu, Tom L. Merk
  • Patent number: 5993754
    Abstract: An adapter for a sterilization cassette type apparatus in the form of a cassette is mounted in the cassette clamping members and is constructed as a fluid distributor with a plurality of funnel-shaped receiving openings each having a cylindrical outer wall for receiving of medical or dental instruments to be cleaned and/or sterilized.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: November 30, 1999
    Assignee: SciCan
    Inventors: Marcel Lemmen, Chris Wu
  • Patent number: 5932171
    Abstract: An apparatus (A) for sterilizing medical instruments and other articles includes a tray (12) with an article receiving area (14). An article to be microbially decontaminated is positioned in the receiving area (14) and a microbe blocking lid (10) is closed. A water electrolysis apparatus (30) receives water, splits the water into two separate streams that pass respectively through an anode chamber (34) and a cathode chamber (36), and exposes the streams to an electric field that results in the production of a catholyte solution for cleaning and an anolyte solution for sterilization. The anolyte and catholyte are selectively circulated through the article receiving area (14) by a pump (66) to clean and microbially decontaminate the external surfaces and internal passages of an article located therein. The anolyte or deactivated anolyte provides a sterile rinse solution. A reagent dispensing well (60) receives an ampule (80) or the like.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: August 3, 1999
    Assignee: Steris Corporation
    Inventor: Paul S. Malchesky
  • Patent number: 5824276
    Abstract: An apparatus and method for uniformly contacting an article with a treatment solution. Preferred embodiments are methods of uniformly tinting of contact lenses or uniformly surface modifying contact lenses. The method involves suspending the lens in the treatment solution by application of fluid flow, preferably sinusoidal or pulsed, in a direction opposite the stagnant force (i.e., sum of buoyancy and gravity forces) on the article. The fluid flow prevents the lens from contacting the container structure for periods sufficient to cause non-uniform treatment conditions, while continuously mixing the treatment solution to maintain uniform concentrations throughout.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: October 20, 1998
    Assignee: CIBA Vision Corporation
    Inventors: Robert A. Janssen, Barbara L. Heyl, Roger J. Hoffman, Thomas E. Shank
  • Patent number: 5820821
    Abstract: A sterilizer supplies liquid over an object and then irradiates far-infrared radiation to the object. The object is fully sterilized since the supplied liquid well absorb far-infrared radiation with sterilizing effect.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: October 13, 1998
    Assignee: Minolta Co., Ltd.
    Inventors: Nobukazu Kawagoe, Shigeru Oyokota, Yoshihiro Kiuchi, Kiyoyuki Takesako
  • Patent number: 5783147
    Abstract: Apparatus for and method of sterilizing medical and laboratory devices and cleaning contaminants from contact lenses at low voltages, the apparatus including a housing carrying a sterilizing and cleaning well, electrodes, appropriate controls and a power source and the method comprising the steps of positioning a contact lens and an adsorbent so that the adsorbent is disposed between the contact lens and an electric current source, immersing the contact lens, the adsorbent, and the current source in a saline or other appropriate solution, and then applying electric current from the power source through the adsorbent and only over the surface of the contact lens so that contaminants carried by the contact lens migrate to the adsorbent.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: July 21, 1998
    Inventors: Theodore H. Rehmeyer, James R. Shultz
  • Patent number: 5759490
    Abstract: A countertop decontamination unit (A) has a decontamination chamber (10) which contains items to be sterilized, disinfected, or otherwise microbially decontaminated. A catheter (60) has an initial curve shape (62A). However, the catheter (60) is straightened in use and returns to a shape (62B). During a decontamination cycle, one or more porous clips (64) are disposed into frictional contact with the catheter. The clip (64) holds the catheter in the initial or undersized shape (62A) during the decontamination process. In the decontamination process, the decontamination fluid is heated at least to a temperature that resets the shape memory of the catheter (e.g., 40.degree.-60.degree. C.). The clip (64) has a sufficient porosity that microbial decontamination fluid penetrates through the clip to wet portions of the item surface in frictional contact with the clip assuring total microbial decontamination of the catheter.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: June 2, 1998
    Assignee: Steris Corporation
    Inventor: Paul S. Malchesky
  • Patent number: 5753196
    Abstract: An apparatus for plasma sterilization of articles includes a plasma generator, a sterilizing chamber, and a source of water vapor in fluid communication with the plasma generator, and may optionally include an autoclave. A method for plasma sterilization comprises exposing an article to be sterilized to a neutral active species of a plasma generated from water vapor. The exposure of the article to the plasma is carried out at reduced pressures and a chamber temperature of less than about 82.degree. C. for a time period sufficient to effect sterilization.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: May 19, 1998
    Assignee: AbTox, Inc.
    Inventors: Phillip A. Martens, David L. Rainwater
  • Patent number: 5714119
    Abstract: A sterilizer supplies liquid over an object and then irradiates far-infrared radiation to the object. The object is fully sterilized since the supplied liquid well absorb far-infrared radiation with sterilizing effect.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: February 3, 1998
    Assignees: Minolta Co., Ltd., Yoshihiro Kiuchi, Kiyoyuki Takesako
    Inventors: Nobukazu Kawagoe, Shigeru Oyokota, Yoshihiro Kiuchi, Kiyoyuki Takesako
  • Patent number: 5569438
    Abstract: In an apparatus for treating, for purposes of sterilization, a continuous material web a first treatment station is provided and includes a device for bringing a material web into contact with liquefied hydrogen peroxide. A second treatment station is also provided in which the material web is simultaneously sterilized with hydrogen peroxide vapor and dried with heated air after treatment of the material web in the first treatment station. The second treatment station includes an elongate chamber having an inlet and outlet, the material web being dried and thereby generating hydrogen peroxide vapor as it is led through the elongate chamber from the inlet to the outlet. The second treatment station also includes an outer flow duct in flow communication with the inlet and outlet of the elongate chamber.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: October 29, 1996
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Anders Hilmersson
  • Patent number: 5424034
    Abstract: The disclosure relates to a method and an apparatus for treating, for purposes of sterilization, a continuous material web (16) by bringing the entire web or parts thereof intended for sterilization into contact with liquefied hydrogen peroxide and thereafter drying the web with the aid of a hot gaseous fluid.In order to improve the degree of destruction of micro-organisms present on the material web, the material web is dried, after contact with the liquefied hydrogen peroxide, with air which has been intentionally supplied with hydrogen peroxide.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: June 13, 1995
    Assignee: Tetra Laval Holdings & Finance SA
    Inventor: Anders Hilmersson
  • Patent number: 5288467
    Abstract: A cleaning and disinfecting apparatus for medical equipment and instruments is provided. The apparatus includes at least one feed line constructed so as to be coupled for the supply of cleansing liquid and at least one outlet line for the discharge of spent cleansing liquid. A transportation and cleaning vessel is further provided which receives the articles to be cleaned and is adapted to be placed in and taken out of the apparatus. The vessel has at least one inlet and at least one outlet, the inlet being adapted to be connected to the feed line and the outlet being adapted for coupling to the discharge line. The inlets and outlets can be closed by non-return flaps on valves which are in closed position when inoperative and are opened by pressurized fluid.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: February 22, 1994
    Inventor: Hans Biermaier
  • Patent number: 5288462
    Abstract: A sterilization apparatus has a chamber within a housing in which the materials to be sterilized are placed and the chamber is supplied with liquid under pressure. A pressure sensitive, rapid acting implosion cartridge is in communication with the chamber and acts to depressurize the chamber in milliseconds when the desired sterilization pressure is reached. The cartridge then reseals the chamber for a subsequent pressure build-up.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: February 22, 1994
    Assignee: Stephen D. Carter
    Inventors: Stephen D. Carter, James W. Brazell
  • Patent number: 5116575
    Abstract: Medical instruments, which may include brass, copper, aluminum, stainless steel, carbon steel, or plastic parts are microbially decontaminated (sterilized or disinfected) in an antimicrobial solution. To provide a long shelf life, premeasured doses of powdered reagents are sealed in an ampule until ready for use. The powdered reagents are selected such that they react in the presence of water to form a strong oxidant solution in an appropriate concentration to be effective as an antimicrobial. The preferred powdered reagents include acetylsalicylic acid and sodium perborate which react in the presence of water to form a peracetic acid solution. Moreover, these dry reagents form sodium metaborate and salicylic acid, both corrosion inhibitors to inhibit corrosion of metal parts of the medical instruments. The ampule may also hold a preselected dose of phosphate or other water soluble corrosion inhibitors and a wetting agent.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: May 26, 1992
    Assignee: Steris Corporation
    Inventors: Duncan C. Badertscher, Raymond C. Kralovic
  • Patent number: 5053140
    Abstract: An apparatus and a process for using the apparatus for removing fat, bacteria, solids and other impurities from water used in food processing so that substantially all the water may be reused includes a tower. The water is passed through a coarse filter to remove large pieces and is then introduced into the tower near the top thereof and flows out the tower near the bottom thereof. A mixture of ozone and air is introduced at the bottom of the tower and bubbled up through the tower, counter to the flow of the water. The ozone and water mixture carries impurities, especially the fat, over the top of the tower as a foam. The foam then flows over the tower into a waste drain. The process and apparatus may be varied to include a second tower unit with an alternative intermediate filter unit between the first tower and second tower unit.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: October 1, 1991
    Assignee: American Water Purification, Inc.
    Inventor: William D. Hurst
  • Patent number: 5011661
    Abstract: A method for disinfecting a contact lens comprises immersing the lens in an aqueous solution of H.sub.2 O.sub.2 having a pH of 4 or below and adding to the solution a neutralizing agent comprising a catalyst for decomposing any residual H.sub.2 O.sub.2 and a retarding agent for delaying the decomposition of the H.sub.2 O.sub.2 for a predetermined time in order to permit sterilization of the lens to be substantially complete. The retarding agent preferably comprises either a polymeric coating which dissolves gradually in the H.sub.2 O.sub.2 solution or a semipermeable membrane enveloping the catalyst. The neutralizing agent preferably also contains an auxiliary material which raises the pH of the acidic H.sub.2 O.sub.2 solution. The enzymatic decomposing agent can be embedded in a particulate carrier substance forming the bottom part of a two part container, the upper part of which contains an aqueous solution of H.sub.2 O.sub.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: April 30, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Horst Schafer, Gerhard Ludwig, Rainer Sunderdiek
  • Patent number: 4938933
    Abstract: A medical and surgical instrument cleaning and disinfecting device consisting of a tubular body whose one end is open and whose other end is equipped with a liquid collection tank is shown. The detector senses the presence of an instrument inside of the tubular body and controls pressurized diffusion of a nebulized disinfection product which is sprayed on the instrument. A suction device pulls disinfection spray towards a reservoir.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: July 3, 1990
    Inventor: Jean J. M. V. A. Perrot
  • Patent number: 4888155
    Abstract: An apparatus for sterilizing packaging material is provided. The apparatus includes a container or bath for containing a liquid sterilant through which the packaging material is drawn and guided. The container having an entry opening and exit opening, and guide rollers. At least one spray nozzle located at a position above the level of liquid sterilant for spraying the packaging material with recirculated filter liquid sterilant after it has passed through the liquid sterilant bath is provided.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: December 19, 1989
    Assignee: Baxter International Inc.
    Inventors: John L. Posey, Ronald W. Swank
  • Patent number: 4555385
    Abstract: An introduction process and apparatus is described concerning the continuous elution of a value, i.e. a metal value such as gold, from a particulate carrier by a counterflow of stripping liquid through the pressurized vessel in which the loaded particulate carrier is introduced to the vessel as a low velocity plug in a liquid carrier. The extraction process is also used with the continuous elution process in which the particulate material is extracted from the bottom part of a pressure vessel through a discharge pipe extending therefrom and in which a discharge liquid is introduced into the discharge pipe upstream of the discharge end under such pressure as to maintain a head of the discharge liquid upstream of that location and a flow of the liquid downstream from the location to transport the particulate material through the discharge pipe.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: November 26, 1985
    Assignee: Ok Tedi Mining Limited
    Inventor: Alan M. Stone
  • Patent number: 4406860
    Abstract: A method and apparatus for canning food products in a non-metallic jar, utilizing a metallic or non-metallic jar lid and a non-metallic enclosure enveloping the jar and lid and which is placed within a microwave oven for heating with a pressure control check valve for limiting the maximum pressure within the enclosure during heating and preventing entry of air during subsequent cooling of the enclosure and food product.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: September 27, 1983
    Inventors: Max P. Beauvais, Raymond E. Camezon
  • Patent number: 4406861
    Abstract: A method and apparatus for canning food products in a non-metallic jar, utilizing a metallic or non-metallic jar lid and a non-metallic enclosure enveloping the jar and lid and which is placed within a microwave oven for heating with a pressure control check valve for limiting the maximum pressure within the enclosure during heating and preventing entry of air during subsequent cooling of the enclosure and food product.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: September 27, 1983
    Inventors: Max P. Beauvais, Raymond E. Camezon
  • Patent number: 4372921
    Abstract: A container lid (12) is held open by a support plate (18) carrying a chamber (20) which expands at a predetermined point in a sterilizing cycle to react against the lid, moving the plate outwardly to permit the lid to drop onto the container base. A resilient gasket (16) prevents fluid flow into the container after the lid is fallen, but permits fluid flow outwardly past the gasket when interior pressure exceeds exterior pressure. When the container is to be opened, a relief valve (60) relieves the vacuum within the container and filters air entering the container at that time.
    Type: Grant
    Filed: December 8, 1981
    Date of Patent: February 8, 1983
    Inventors: Roger S. Sanderson, Robert C. Whelchel
  • Patent number: 4251482
    Abstract: A container is provided with a valve opening at its bottom wall to permit steam to circulate into the container and to permit any condensation to drain from the container while the valve is open. The valve is closed by an expandable chamber in response to the pressure drop at the end of a sterilizing cycle. A valve controlling the flow of steam into the expandable chamber closes when subjected to the high temperature steam, thus capturing steam within the chamber. This steam expands when the pressure drops to close the valve in the container. The container lid and gasket permit steam to be withdrawn from the container but prevent air flow into the container. A vacuum created in the container at the end of the sterilizing cycle holds the container lid in place and holds the valve closed.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: February 17, 1981
    Assignee: Roger S. Sanderson
    Inventors: Roger S. Sanderson, Robert C. Whelchel
  • Patent number: 4247517
    Abstract: A container lid is released at a desired point in a sterilizing cycle with the actuating movement being provided by an expandable chamber having a quantity of sterilizing environment captured during the sterilizing cycle.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: January 27, 1981
    Assignee: Roger S. Sanderson
    Inventors: Roger S. Sanderson, Robert C. Whelchel