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WO1988001182A1 - Dispositif de sterilisation de dechets, en particulier de dechets infectieux - Google Patents

Dispositif de sterilisation de dechets, en particulier de dechets infectieux Download PDF

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Publication number
WO1988001182A1
WO1988001182A1 PCT/EP1987/000436 EP8700436W WO8801182A1 WO 1988001182 A1 WO1988001182 A1 WO 1988001182A1 EP 8700436 W EP8700436 W EP 8700436W WO 8801182 A1 WO8801182 A1 WO 8801182A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder chamber
garbage
plunger
microwave
waste
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1987/000436
Other languages
German (de)
English (en)
Inventor
Wolfgang Schinke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1988001182A1 publication Critical patent/WO1988001182A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • H05B6/802—Apparatus for specific applications for heating fluids
    • H05B6/804—Water heaters, water boilers
    • 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
    • A61L11/00—Methods specially adapted for refuse
    • 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
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/12—Microwaves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
    • B30B9/3003—Details
    • B30B9/3007—Control arrangements

Definitions

  • the invention relates to a device for sterilizing waste, in particular infection waste, according to the preamble of patent claim 1.
  • infectious waste falls e.g. in hospitals.
  • special hygiene requirements apply to waste disposal in order to prevent infections.
  • so-called infectious waste must be collected and disposed of separately, which is contaminated with blood, secretions or excrement, such as wound dressings, diapers, single-use syringes, cannulas, etc.
  • infectious waste is affected, which is the case when it is collected, transported and stored within the hospital ⁇ as in the removal of special measures to prevent infection. This applies in particular to waste from infection stations, dialysis stations, medical laboratories, etc. Special care must be taken when disposing of waste in order to reliably prevent the spread of pathogens.
  • infectious waste collected in hospitals is usually disposed of in a waste incineration plant, the special waste mentioned being incinerated in a special plant.
  • a tried and tested device for sterilization Microwave energy is used is described in DE-PS 35 05 570.
  • This device consequently has a lock chamber, a spray device arranged therein, a waste crusher and a microwave chamber in which the moistened infection garbage is sterilized.
  • a transport path for example a conveyor belt or a screw conveyor, is provided within the microwave chamber. is surrounded by a microwave-permeable housing. The infection garbage is irradiated with microwaves along this transport path by several microwave transmitters and thereby sterilized. , _ . _ __ . "/ 01182"
  • the entire device is sealed against the escape of germs and steam to the outside.
  • a major advantage of this compact disposal system is that the infection garbage sterilized in this way can be treated like normal household waste and can be disposed of in conventional landfills.
  • the air germs which may be released are released to the sprayed liquid, e.g. a disinfectant solution bound.
  • a disinfectant solution bound e.g. a disinfectant solution bound.
  • the sterilization process in this system is controlled by temperature sensors, e.g. are designed as contact sensors or as infrared sensors.
  • the object of the invention is to improve a device of the type in question in such a way that the formation of airborne germs is reliably prevented and, moreover, the microwave energy required for sterilization is reduced.
  • the In Stammionsmull so compressed and thus do not crushed is then in the cylinder chamber with microwave energy irradiated for so long that the temperature required for sterilization is reached, this temperature is approximately between 130 and 200 ° C.
  • the now sterilized infection garbage is then preferably expelled from the cylinder chamber by a further movement of the plunger
  • the sterilized waste can, if appropriate after being cooled, be crushed, if necessary packed and finally disposed of in a landfill.
  • a device ensures reliable sterilization of infection garbage.
  • a ventilation opening with a filter e.g. an activated carbon filter can be provided, through which released airborne germs are retained.
  • the energy of the microwave transmitters can accordingly be smaller than in the above known device.
  • the operation of the device according to the invention is preferably monitored by a processor to which signals from temperature, pressure, gas pressure, position and, if appropriate, moisture sensors are fed.
  • the operation can be fully automated in this way.
  • Figures 1, 2 and 3 each have a longitudinal section and a
  • Figure 4 shows a longitudinal section through a second
  • a device 1 for sterilizing infection garbage has a boiler 2 which is designed as a cylinder chamber for a plunger 3 which can be moved therein.
  • a telescopic piston rod 4 is provided, which is guided through the cover of the boiler and is connected to a drive 5 there.
  • the plunger is shown in its upper rest position.
  • An inlet 6 is provided directly below this rest position of the plunger and can be closed with a door 7.
  • Bulk surfaces 8 are also provided at the inlet.
  • the bottom of the boiler is closed with a flap 9 which can be opened and pivoted via a hydraulic cylinder 10 which is fastened in a collecting housing 11.
  • a waste shredder 12 is attached underneath this collecting housing. ordered, below the outlet opening 13, a conveyor belt 14 which leads to a dumpster 15.
  • microwave transmitters 16 are provided around the circumference of the boiler at different heights, each of which has a microwave-permeable window 17, e.g. from ceramic, radiate microwave energy into the interior of the boiler.
  • a microwave-permeable window 17 e.g. from ceramic
  • microwave transmitters 16 are provided at three different heights distributed around the circumference of the boiler.
  • Level sensors 18 are arranged along the jacket lines of the boiler at different heights, e.g. are designed as light barriers. Furthermore, temperature sensors 19 are also provided at different heights along surface lines of the boiler, which can either be touch sensors or infrared sensors. Moisture sensors 20 and gas pressure sensors 21 can also be provided. The arrangement of all sensors and sensors 18 to 21 is only schematic. They all serve the purpose of determining the parameter to be measured within the boiler during operation of the device, as explained further below.
  • Infection garbage to be sterilized is filled into containers and sacks -22 through the opened inlet 6 into the kettle.
  • a spray device 23 is actuated, which sprays a disinfectant solution in fine droplet or aerosol form into the kettle. If a sufficient fill level is determined via the fill level sensors 18, the inlet 6 is closed by the door 7.
  • the boiler is now sealed gas and pressure tight.
  • the plunger 3 is then moved downwards with the aid of the drive 5 until the contents of the boiler are sufficiently compressed, as is shown in FIG. 2.
  • the pressure of the plunger can be determined via a pressure sensor 24 in the drive 5 of the plunger. To achieve a good compression, is the pressing surface of the plunger is slightly concave, as indicated by 25 in the figures.
  • a ventilation channel 26 in which a controllable pressure relief valve 27 is arranged.
  • the vent channel 26 opens into a filter 28, e.g. an activated carbon filter. Any air escaping through the ventilation channel 26 during the pressing of the infectious waste is cleaned by the activated carbon filter 28, so that any infection germs are retained. The escaping air can escape from the boiler through a vent 29 on the lid of the boiler; if necessary, a filter, not shown here, is again provided in this ventilation opening.
  • those microwave transmitters 16 are switched on which are located below the plunger; in this case these are the two lower groups.
  • the microwave energy of the compressed In istionsmull is heated.
  • all areas within the compressed infectious waste are reached, either by the directly emitted microwave energy or by microwave energy reflected by the metal walls of the boiler.
  • the temperature inside the press room is constantly monitored, as well as the humidity and the gas pressure, if necessary. If a certain temperature threshold is reached and held for a certain time, the sterilization phase is ended. Experiments have shown that temperatures of greater than 134 ° C. and sometimes up to 200 ° C. are reached, at which sterilization is reliably guaranteed.
  • the microwave transmitters 16 are then switched off.
  • the locked flap 9 is unlocked and opened with the aid of the hydraulic cylinder 10, so that the infection garbage enters the collecting housing 11 falls and hits the waste shredder 12 there.
  • This can be supported by a further method of the plunger piston, so that the entire infection garbage is expelled from the boiler.
  • the garbage shredder 12 the garbage is minced and falls through the outlet opening 13 either directly into a garbage container 15, or, as shown in the figure, first onto a conveyor belt 14 and then into the garbage container 15. The comminuted and fine-grained garbage can then be disposed of like normal household waste in a conventional landfill.
  • the operation of the device described is processor-controlled; a process computer 30 is provided for this.
  • the function can also be monitored via a monitor 31.
  • the signals from the fill level sensors 18, the temperature sensor 19, the moisture sensor 20, the gas pressure sensor 21 and the pressing pressure sensor 24 are fed to the process computer. Further data is also entered, e.g. the automatic locking of the flap 9, the closing of the door 7 etc.
  • FIG. 4 shows a modified exemplary embodiment of a device la.
  • the boiler 2a with the plunger and the microwave transmitters is constructed identically to the exemplary embodiment according to FIGS. 1 to 3.
  • the mode of operation and its control and monitoring with the aid of a process computer 30a is also identical to the above exemplary embodiment.
  • Garbage through the collecting housing 11a first onto a conveyor belt 14a and is only then comminuted into a garbage chopper 12a.
  • This has the advantage that the sterilized waste, which is still relatively hot after the sterilization phase, can cool down on the conveyor belt, so that any plastic waste solidifies at least to such an extent that the waste shredder 12a does not become dirty or glued.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Un dispositif (1) de stérilisation de déchets, en particulier de déchets dits infectieux, utilise des micro-ondes dans une chambre à micro-ondes. La chambre à micro-ondes forme une chambre ou chaudière cylindrique (2) dans laquelle peut se déplacer un piston de compression (3). Les déchets infectieux à stériliser sont introduits dans la chaudière (2) par un orifice d'admission (6), puis comprimés par le plongeur (3) et stérilisés par des micro-ondes fournies par des émetteurs de micro-ondes (16). Une fois stériliés, les déchets infectieux peuvent être broyés. Le fonctionnement du dispositif est commandé et contrôlé à l'aide d'un processeur (30).
PCT/EP1987/000436 1986-08-12 1987-08-10 Dispositif de sterilisation de dechets, en particulier de dechets infectieux Ceased WO1988001182A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3627367A DE3627367C1 (de) 1986-08-12 1986-08-12 Vorrichtung zum Sterilisieren von Muell,insbesondere Infektionsmuell
DEP3627367.8 1986-08-12

Publications (1)

Publication Number Publication Date
WO1988001182A1 true WO1988001182A1 (fr) 1988-02-25

Family

ID=6307248

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1987/000436 Ceased WO1988001182A1 (fr) 1986-08-12 1987-08-10 Dispositif de sterilisation de dechets, en particulier de dechets infectieux

Country Status (2)

Country Link
DE (1) DE3627367C1 (fr)
WO (1) WO1988001182A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232594A (en) * 1989-04-19 1990-12-19 Vetco Sanitec Gmbh Treating medical hazardous wastes
EP0454122A3 (en) * 1990-04-27 1992-07-22 Kawasaki Jukogyo Kabushiki Kaisha Method and apparatus for treating medical wastes
EP0522231A1 (fr) * 1991-07-11 1993-01-13 Kawasaki Jukogyo Kabushiki Kaisha Procédé et appareil pour le traitement de déchets médicaux infectieux
WO1995024228A1 (fr) * 1994-03-11 1995-09-14 Societe Generale Pour Les Techniques Nouvelles Sgn Procede de sterilisation par traitement haute frequence de dechets a risque, notamment de dechets hospitaliers et dispositif associe
FR2838660A1 (fr) * 2002-04-23 2003-10-24 Ferrand Malonze Viande Procede de traitement par micro-ondes de chlorure de sodium usage en vue de son recyclage
CN111284965A (zh) * 2020-04-07 2020-06-16 中国工程物理研究院应用电子学研究所 一种基于微波消毒灭活的便携式消毒垃圾桶

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5350562A (en) * 1991-04-09 1994-09-27 Anthony Frank H Method and apparatus for sterilization and separation of plastic and non-plastic medical wastes
IT230653Y1 (it) * 1993-10-20 1999-06-09 Econos Srl Impianto per la sterilizzazione di rifiuti ospedalieri
CA2320455A1 (fr) * 2000-09-22 2002-03-22 Ewmc International Inc. Installation de traitement des dechets medicaux
DE20116476U1 (de) * 2001-10-08 2003-02-27 Salda, Luciano, Vignola Vorrichtung zum Bearbeiten von medizinischem Abfall
RU2228766C1 (ru) * 2003-03-14 2004-05-20 Государственное унитарное предприятие "Всероссийский электротехнический институт им.В.И.Ленина" Устройство для комбинированной бактерицидной обработки

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115951A5 (fr) * 1970-11-24 1972-07-07 Lucas Furnace Developmen
FR2536011A1 (en) * 1982-11-12 1984-05-18 Hars Produccion Sa Automatic and self-disinfecting hydraulic packaging press for the elimination and processing of infected clinical and hospital waste under appropriate hygiene conditions
DE3317300A1 (de) * 1983-05-11 1984-11-15 Vieregge-Bruhns, Günther, 3070 Nienburg Behaelter zur aufnahme von infektionsmuell
CH656536A5 (de) * 1985-02-11 1986-07-15 Sed Sa Verfahren zur entgiftung von in einem muellsammel- und -verdichtungscontainer gesammeltem muell.
DE3505570C1 (de) * 1985-02-18 1991-01-24 GVB SANIMED Hygiene- und Medizintechnik GmbH, 3070 Nienburg Vorrichtung zur Behandlung von Infektionsmüll mit Hilfe von Mikrowellen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547577A (en) * 1968-11-12 1970-12-15 American Sterilizer Co Refuse sterilization system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115951A5 (fr) * 1970-11-24 1972-07-07 Lucas Furnace Developmen
FR2536011A1 (en) * 1982-11-12 1984-05-18 Hars Produccion Sa Automatic and self-disinfecting hydraulic packaging press for the elimination and processing of infected clinical and hospital waste under appropriate hygiene conditions
DE3317300A1 (de) * 1983-05-11 1984-11-15 Vieregge-Bruhns, Günther, 3070 Nienburg Behaelter zur aufnahme von infektionsmuell
CH656536A5 (de) * 1985-02-11 1986-07-15 Sed Sa Verfahren zur entgiftung von in einem muellsammel- und -verdichtungscontainer gesammeltem muell.
DE3505570C1 (de) * 1985-02-18 1991-01-24 GVB SANIMED Hygiene- und Medizintechnik GmbH, 3070 Nienburg Vorrichtung zur Behandlung von Infektionsmüll mit Hilfe von Mikrowellen

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232594A (en) * 1989-04-19 1990-12-19 Vetco Sanitec Gmbh Treating medical hazardous wastes
AT401471B (de) * 1989-04-19 1996-09-25 Abb Flaekt Sanitec Gmbh Vorrichtung und verfahren zur behandlung von medizinischen sonderabfällen
EP0454122A3 (en) * 1990-04-27 1992-07-22 Kawasaki Jukogyo Kabushiki Kaisha Method and apparatus for treating medical wastes
US5213758A (en) * 1990-04-27 1993-05-25 Kawasaki Jukogyo Kabushiki Kaisha Method and apparatus for treating medical wastes
EP0522231A1 (fr) * 1991-07-11 1993-01-13 Kawasaki Jukogyo Kabushiki Kaisha Procédé et appareil pour le traitement de déchets médicaux infectieux
US5322603A (en) * 1991-07-11 1994-06-21 Kawasaki Jukogyo Kabushiki Kaisha Method of an apparatus for treating infectious medical wastes
WO1995024228A1 (fr) * 1994-03-11 1995-09-14 Societe Generale Pour Les Techniques Nouvelles Sgn Procede de sterilisation par traitement haute frequence de dechets a risque, notamment de dechets hospitaliers et dispositif associe
FR2717083A1 (fr) * 1994-03-11 1995-09-15 Sgn Soc Gen Tech Nouvelle Procédé de stérilisation par traitement haute fréquence de déchets à risque, notamment de déchets hospitaliers et dispositif associé.
FR2838660A1 (fr) * 2002-04-23 2003-10-24 Ferrand Malonze Viande Procede de traitement par micro-ondes de chlorure de sodium usage en vue de son recyclage
CN111284965A (zh) * 2020-04-07 2020-06-16 中国工程物理研究院应用电子学研究所 一种基于微波消毒灭活的便携式消毒垃圾桶

Also Published As

Publication number Publication date
DE3627367C1 (de) 1987-12-17

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