US3917450A - Apparatus for temperature simulation and control in a steam sterilizer - Google Patents

Apparatus for temperature simulation and control in a steam sterilizer Download PDF

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Publication number
US3917450A
US3917450A US457122A US45712274A US3917450A US 3917450 A US3917450 A US 3917450A US 457122 A US457122 A US 457122A US 45712274 A US45712274 A US 45712274A US 3917450 A US3917450 A US 3917450A
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United States
Prior art keywords
chamber
test bottle
receptacles
support
bottle
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Expired - Lifetime
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US457122A
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English (en)
Inventor
Bertil Lennart Martensson
Bengt Olof Johansson
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Electrolux AB
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Electrolux AB
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • A61L2/28—Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment

Definitions

  • ABSTRACT A sterilizing autoclave chamber which, utilizes a test bottle and pivotable structure capable of movement between a first position inside the chamber to a second position outside the chamber.
  • the bottle and associated structure are situated in close proximity to the opening by which receptacles and the like are inserted and treated in the autoclave chamber.
  • the test bottle movement may be automatically efiected upon the movement of the door of the autoclave chamber.
  • the test bottle In the first position, the test bottle provides an accurate indication of the internal temperature of said receptacles in the chamber; while, in the second position, said receptacles may be more easily inserted and removed from said chamber.
  • FIG. 1 the inner wall 10 of an autoclave chamber
  • the autoclave can be clave for steam sterilization of solutions in closed receptacles having means for cooling the receptacles after finished steam treatment and means for control of the treatment in the autoclave, i.e. temperature sensing Imeans in the form of a thermo-element or the like arranged in a test bottle.
  • test bottle of a certain character and with a certain content.
  • a thermo-element connected to the control means is placed in the bottle.
  • the element in the bottle reacts in the same way as if it were placed in a receptacle treated in the autoclave.
  • handling of the test bottle in practice requires great care in order to have a first-class result of the treatment in the autoclave each time.
  • the test bottle may be placed at different places in the chamber on different occasions so that the thermoelement will react in different ways on different occasions. There is also a risk that the insertion of the test bottle some time is neglected.
  • FIG. 1 shows'schematically in a perspective view a charging trolley for solution receptacles in an autoclave chamber which is only outlined and has a test bottle pivotally arranged at the chamber wall;
  • FIG. 2 in a horizontal section shows the part in question of the same autoclave
  • FIG. 3 in a corresponding horizontal section shows another autoclave with a movable test bottle.
  • charging trolley 11 having wheels 12, a front part 13 and a rear part 14 in the shape of a frame 15 with a cover plate 16. Between these parts grated shelves 17 are arranged.
  • a holder 19 with bearing for a hinged arm 20 with a pin On the left vertical side 18 of the inner wall 10 is a holder 19 with bearing for a hinged arm 20 with a pin.
  • the arm 20 extends from the holder 19 outwardly to a hinge 21 (FIG. 2) at the bottom periphery of a tray or basket 22 in which a test bottle 23 is placed.
  • This is of such design and has such a content that when it is inserted in the autoclave chamber it reacts to temperature changes in a way corresponding to the reaction in receptacles being treated in the autoclave.
  • a thermo-element In the bottle 23 a thermo-element is inserted, which via a wire 24 passing out through a hole 25 in the chamber wall is connected to the control means of the autoclave.
  • the front cover plate 16 has an opening 26 so situated that the basket 22 with the test bottle 23, as shown by the dash-dotted arrow, can be swung into the space filled up by the charging trolley when this
  • test bottle 23 together with the moving means are shown in FIG. 2, in solid lines in an intermediate position I outside the autoclave and in dashed lines in a position II when it is moved into the autoclave and further in a position III where the arm 20 has been moved aside and the basket 22 has been swung about its hinge point 21 at the arm so that both the arm and the test bottle are completely moved aside and located beside the passage for insertion of the charging trolley 11 which has a'handle 27 for its handling.
  • FIGS. 1 and 2 It appears fromFIGS. 1 and 2 that it is simple to insert a charging trolley in an autoclave and thereafter to move the test bottle into place before the door 28 of the autoclave is closed and the treatment is started. When the treatment is finished the door is opened, the test bottle moved aside to position III and the charging trolley can be taken out.
  • the charging trolley after treatment can be moved out through the rear door without front door and test bottle having to be moved fromthe treatment position.
  • the arrangement withthe test bottle does not intrude on the width of the autoclave space. Of course, before a following trolley is moved into the autoclave the door has to be opened and the test. bottle moved aside.
  • thermo-element it is possible to connect the door 28 and the basket 22 with links or the like so that, when the door 28 is moved, the test bottle 23 is automatically moved between positions II and III.
  • the described arrangement for movement of, the test bottle can of course also be used in an autoclave with sliding door, and even then it is possible to connect the door with the movement means for the test bottle. If before a treatment the test bottle is not in place in the autoclave chamber, closing of the door is prevented by the arm 20. Therefore it is ensured that the bottle with the thermo-element is in place before the treatment starts and that the thermoelement always is in the same place during treatment, which give a high security for uniform treatment of receptacles being charged on different occasions.
  • the re actions of the thermo-element better correspond to the 7 conditions inside the receptacles being treated than in arrangements with a test bottle placed in a pocket in the autoclave wall.
  • FIG. 3 a modified embodiment is shown, in which asimple arrangement has been achieved in spite of the fact that space for a basket 30 with a test bottle 23 is required in apocket129 in the autoclave walL
  • the basket 30 is arranged to.be moved from the position in the pocket 29 shown in solid lines to an interior position over a shelf 17 in a charging trolley as shown in dashed lines.
  • the basket is insertible and removable by a rod 31 accessible outsidethe autoclave.
  • a link arm system inside the autoclave can be used (not shown) and the movement means can be connected to the door 32 so that the test bottle is moved between the two positions shown when the door is closed and opened.
  • the opening in the chargingtrolley has to be made in a suitable place.
  • the'improvement comprising: means for controlling the temperature of said steam sterilization, a test bottle having a temperature sensing means therein, said test bottle containing the solution of said receptacles so as to simulate said' recepticles when placed in said chamber, means for connecting said temperature sensing means to said control means, a support for said test'bottle, said support being movably mounted on a chamberwall, said test bottle and support arranged and constructed so as to be moved from a 'first position in the interior of said chamber to a second position in which the test bottle and the supporttherefore are located outside of said chamber and adjacent to said opening in the chamber, whereby, in said first position, said test bottle simulates the conditions of said receptacles and provides said control means ,with an indication of the temperature of the solution in said receptacles via said sensing means, and,
  • an apparatus for steam sterilization of solutions in closed receptacles having a chamber defined by walls and having an opening in one of said walls with closure means therefor, the improvement comprising: means for controlling the temperature of said steam sterilization, a test bottle having a temperature sensing means therein, said test bottle containing the solution of said receptacles so as to simulate said receptacles when placed in said chamber, means for connecting said temperature sensing means to said control means, a support for said test bottle, an indentation in a chamber wall facing the interior of said chamber and forming a pocket in the inside of said chamber, a movable operator means for said test bottle and said support being operable from the exterior of said chamber whereby said support andtest bottle can be selectively moved from a first position in said pocket to a second position in the interior of said chamber, whereby, in said first position, said test bottle simulates the conditions of said receptacles and provides said control means with an indication of the temperature of the solution in said receptacles via said sensing

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
US457122A 1973-04-03 1974-04-01 Apparatus for temperature simulation and control in a steam sterilizer Expired - Lifetime US3917450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7304699A SE381998B (sv) 1973-04-03 1973-04-03 Exotermt material

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US3917450A true US3917450A (en) 1975-11-04

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SE (1) SE381998B (sv)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192845A (en) * 1977-04-01 1980-03-11 Firma Vereinigte Edelstahlwerke Aktiengesellschaft Sterilization process and apparatus for infusion solutions and the like filled in containers
US4195061A (en) * 1977-05-17 1980-03-25 Firma Vereinigte Edelstahlwerke Aktiengesellschaft Sterilization apparatus for infusion solutions or the like, filled in containers
FR2603777A1 (fr) * 1986-09-11 1988-03-18 Baele Gangloff Ste Nouvelle Dispositif de mesure d'unites de pasteurisation et installation de pasteurisation utilisant ce dispositif
NL1018707C2 (nl) * 2001-08-03 2003-02-04 Haffmans Bv Meetinrichting voor het controleren van de reiniging van verpakkingen in een wasinstallatie.
FR2860978A1 (fr) * 2003-10-20 2005-04-22 Valois Sas Dispositif de support de reservoir et ensemble de sterilisation comportant un tel dispositif.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905566A (en) * 1931-10-01 1933-04-25 Jess G Moore Sterilizer
US2011869A (en) * 1933-08-05 1935-08-20 Res And Mfg Corp Cooking, heating, and sterilizing device
US3351422A (en) * 1962-02-09 1967-11-07 Pelton & Crane Company Sterilizer
US3450489A (en) * 1966-07-25 1969-06-17 James P Fay Sterilization control means
US3531300A (en) * 1964-11-17 1970-09-29 Pillsbury Co Process for heat treating food sealed within flexible containers
US3804591A (en) * 1968-08-29 1974-04-16 K Bezrodny Apparatus for regulating pressure inside an autoclave

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1905566A (en) * 1931-10-01 1933-04-25 Jess G Moore Sterilizer
US2011869A (en) * 1933-08-05 1935-08-20 Res And Mfg Corp Cooking, heating, and sterilizing device
US3351422A (en) * 1962-02-09 1967-11-07 Pelton & Crane Company Sterilizer
US3531300A (en) * 1964-11-17 1970-09-29 Pillsbury Co Process for heat treating food sealed within flexible containers
US3450489A (en) * 1966-07-25 1969-06-17 James P Fay Sterilization control means
US3804591A (en) * 1968-08-29 1974-04-16 K Bezrodny Apparatus for regulating pressure inside an autoclave

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192845A (en) * 1977-04-01 1980-03-11 Firma Vereinigte Edelstahlwerke Aktiengesellschaft Sterilization process and apparatus for infusion solutions and the like filled in containers
US4195061A (en) * 1977-05-17 1980-03-25 Firma Vereinigte Edelstahlwerke Aktiengesellschaft Sterilization apparatus for infusion solutions or the like, filled in containers
FR2603777A1 (fr) * 1986-09-11 1988-03-18 Baele Gangloff Ste Nouvelle Dispositif de mesure d'unites de pasteurisation et installation de pasteurisation utilisant ce dispositif
NL1018707C2 (nl) * 2001-08-03 2003-02-04 Haffmans Bv Meetinrichting voor het controleren van de reiniging van verpakkingen in een wasinstallatie.
EP1281446A1 (en) * 2001-08-03 2003-02-05 Haffmans B.V. Measuring device for monitoring the cleaning of containers in a washing installation
FR2860978A1 (fr) * 2003-10-20 2005-04-22 Valois Sas Dispositif de support de reservoir et ensemble de sterilisation comportant un tel dispositif.

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Publication number Publication date
SE381998B (sv) 1976-01-12

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