EP1417129A1 - Procede et dispositif pour steriliser des contenants - Google Patents

Procede et dispositif pour steriliser des contenants

Info

Publication number
EP1417129A1
EP1417129A1 EP02754336A EP02754336A EP1417129A1 EP 1417129 A1 EP1417129 A1 EP 1417129A1 EP 02754336 A EP02754336 A EP 02754336A EP 02754336 A EP02754336 A EP 02754336A EP 1417129 A1 EP1417129 A1 EP 1417129A1
Authority
EP
European Patent Office
Prior art keywords
chamber
containers
transport
plasma source
plasma
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.)
Withdrawn
Application number
EP02754336A
Other languages
German (de)
English (en)
Inventor
Kurt Burger
Guenter Schneider
Thomas Beck
Wolfgang Szczerba
Bernd Wilke
Johannes Rauschnabel
Sascha Henke
Bernd Goetzelmann
Heinrich Van De Loecht
Wolfgang Schmitt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1417129A1 publication Critical patent/EP1417129A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/027—Packaging in aseptic chambers
    • 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
    • A61L2/14—Plasma, i.e. ionised gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
    • B65B55/08—Sterilising wrappers or receptacles prior to, or during, packaging by irradiation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S422/00—Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
    • Y10S422/906—Plasma or ion generation means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S422/00—Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
    • Y10S422/907—Corona or glow discharge means

Definitions

  • the invention relates to a method for the sterilization of containers and a device for carrying out the method, starting from the generic features of the main and secondary claims.
  • the containers can be exposed to hot or superheated steam for a predetermined period of time.
  • the duration of the process This requires large systems in order to be able to sterilize large quantities in the production flow.
  • this water vapor sterilization is not able to completely remove so-called pyrogenic, ie inflammatory degradation products and cell residue components of killed germs.
  • the two aforementioned methods have their specific disadvantages.
  • the dry action of heat requires that the equipment to be treated be made of temperature-stable materials, e.g. Steel, ceramics or glass, must be made.
  • the heat treatment especially in the area of Parenteralia bottling, must be followed by complex cooling, in particular with regard to energy, space and investment costs, in order to be able to fill temperature-sensitive active substances at room temperature.
  • EP 0 377 799 A1 discloses a method in which a plasma with an electromagnetic radiation having a frequency of about 2.45 GHz is generated for the sterilization of objects.
  • the object is for this purpose completely exposed to a low-pressure plasma and irradiated in an extension with an additional heat source. Sterilization by means of a plasma has hitherto been substantially concentrated on the application in the treatment of medical devices, for example in catheters or transfusion sets.
  • a method for the sterilization of containers or articles, in which the excitation of an electromagnetic oscillation is performed such that a plasma in a vacuum in the vicinity of the sterilized areas of the container is excitable, is according to the invention with the characterizing features of the main claim developed in an advantageous manner.
  • the areas of the container to be sterilized between the introduction and the discharge in the chamber are approximated by movement of the container and / or the vibration generating device for one or more predetermined periods such that in these areas inside and / or outside of the container a plasma is excited.
  • the embodiments of the method according to the invention and the devices which can be constructed for this purpose use the excitation of a high-frequency or microwave plasma in the low-pressure range, or in a vacuum, by guiding the containers to be treated of the type specified at a defined distance for coupling in Microwave field with simultaneous rotation and transport of the container along the plasma source, or a source cascade, to avoid all-round treatment and avoidance of contact contamination. It has a particularly advantageous effect that the transport device is also exposed to the plasma with all surfaces which may come into contact with the container.
  • the length of the plasma zone also ensures that any local or temporal inhomogeneities of the plasma effect on the surfaces of the container over the treatment time be balanced, with only a corresponding safety margin should be taken into account.
  • a transport device is present in the chamber, which causes a substantially rotating movement of the container during the transport from the introduction to the discharge in the chamber.
  • the plasma source i. the device for generating the electromagnetic vibrations seen outside of the chamber and from the interior of the chamber this is separated by an arrangement by which a coupling of the electromagnetic oscillations in the chamber to be sterilized areas of the containers and a pressure separation of the vacuum Chamber of the deviating pressure outside the chamber is effected.
  • a transport device is provided in the chamber, which also causes a substantially rotating movement of the container during transport from the infiltration to the discharge in the chamber.
  • the at least one plasma source is mounted with the device for generating the electromagnetic oscillations within the chamber and separated from the interior of the chamber by an arrangement.
  • the at least one plasma source can thereby be mounted directly in one or more transport rollers for moving and transporting the containers.
  • the arrangement by which a coupling of the electromagnetic oscillations into the chamber to the regions of the containers to be sterilized takes place can advantageously be a layer of quartz, of oxide ceramics or of Teflon.
  • the at least one plasma source can be designed, for example, to generate the electromagnetic oscillations in the microwave range.
  • this plasma source is separated from the chamber by a microwave transparent tube or plate. Microwave coupling into the chamber is then effected by a slot discoupling or a horn expansion of a waveguide.
  • the at least one plasma source can also have an electrode for generating the electromagnetic oscillations, with which a capacitive high-frequency coupling can be induced by ion bombardment into the chamber.
  • a Faraday shield can be attached, with which the magnetic field can be decoupled at least partially from the electrical effect of the radiated field.
  • the transport of the container with the device according to the invention can be made according to a first embodiment in a simple manner that the containers during transport in the chamber horizontally in Transport direction lie on at least two transport rollers, which are driven in such a way around a likewise horizontally lying in the direction of transport axis of rotation.
  • the containers can be rotated past the coupling region of the plasma source and transported at the same time.
  • the containers are in the chamber during transport in a rotating tube, in the middle or around which at least one plasma source is arranged.
  • the tube is driven about an axis of rotation lying horizontally in the transport direction in such a way that the containers can be rotated past the coupling region of the plasma source and simultaneously transported.
  • the containers lie during transport in the chamber on an inclined plane, so that the containers roll about an axis of rotation transversely to the transport direction and the containers are precisely pitchbar past the Einkopplungs Society of the plasma source and simultaneously transportable.
  • a fourth embodiment is advantageous in which the containers lie during transport in the chamber on at least one roller with a worm gear, which is driven about a horizontally lying in the transport direction rotation axis such that the containers on the coupling region of the plasma sourcewisefanbar and simultaneously are transportable.
  • vertically arranged, rotating rollers may be arranged as worm drive, which transport the containers in their midst.
  • the containers can be transported in a particularly advantageous manner with their opening facing down through the plasma.
  • the containers which roll during the movement of the device in the transport direction about an axis of rotation transversely to the transport direction, are guided in such a way that the containers can be pre-rotated and simultaneously transported at the coupling region of the plasma source.
  • the rotational movement of the rollers can be done in a simple manner by a chain or tooth drive on which the device is movable and engage in the corresponding teeth of the rollers.
  • at least one further plasma source is arranged below and / or laterally next to the chamber, with which a sterilization of the transport device and / or containers dropped by the transport device can be carried out.
  • the method according to the invention can be advantageously improved by determining the sterilizing effectiveness of the plasma by measuring the light emission, in particular with regard to the occurrence, the duration and the spectral components of the light.
  • FIG. 1 shows a schematic view of a device with a transport device arranged in a low-pressure or vacuum chamber for passing through the containers to be sterilized, wherein a plasma is excited in the chamber,
  • FIG. 2 shows a section through the transport device according to FIG. 1 with two rollers
  • FIG. 3 shows a circuit diagram for excitation of the plasma with a high-frequency capacitive coupling of the electromagnetic field
  • FIG. 4 shows a circuit diagram for excitation of the plasma with a high-frequency inductive coupling of the electromagnetic field
  • FIG. 5 shows a modification of the arrangement according to FIG. 5 with a Faraday shield
  • FIG. 6 shows a schematic view of an embodiment of a transport device in which the containers are moved in a rotating tube in the middle of which the plasma source is arranged
  • FIG. 7 shows a cross section through the arrangement according to FIG. 6,
  • FIG. 8 shows a schematic view of an exemplary embodiment of a transport device in which the containers move on an inclined plane
  • FIG. 9 is a schematic view of an embodiment of a transport device in which the loading conditions are moved by a worm drive
  • FIG. 10 shows a schematic view of an exemplary embodiment of a transport device in which the containers are moved by a chain transport device
  • Figure 11 is a plan view of the chain transport device of Figure 10.
  • Figure 12 is a schematic view of a device with one of the aforementioned transport devices, wherein in the chamber a plasma is excited by two opposing plasma sources.
  • FIG. 1 shows a first embodiment of a device 1 is shown, are introduced with the containers 2 in an unsterile region 3 of the device 1.
  • the containers 2 are then transported through a first lock 4 into a low-pressure or vacuum chamber 5 with a mechanical arrangement, which is not described here, and move there by means of a transport device described in greater detail below in the direction of a second lock 6 for removal into a sterile area 7 the device 1, from which they can then be removed.
  • FIG. 1 shows the generation of a plasma 8 in the chamber 5 through the field of a microwave transmitter as a plasma source, this being schematically indicated by arrows 9.
  • FIG. 2 shows the first embodiment of 1, in which the containers 2 are rotated during transport from the lock 4 to the lock 6 by means of rollers or rollers 10 and 11, so that all areas of the containers 2 in the same way to the plasma 8 are exposed.
  • the two transport rollers 10 and 11 according to FIG. 2 can be slightly inclined in order to overcome the distance between the locks 4 and 6 by means of gravity. Due to the constant rotation of the containers 2, the friction is minimized.
  • An example of a plasma source is a line source which coaxially conveys the microwave radiation into a vacuum, a quartz tube defining the boundary between the vacuum and the internal normal pressure and inside a concentrically arranged metal rod acting as an inner conductor.
  • the plasma which is excited on the outside of the quartz tube, serves as an outer conductor.
  • This principle can be operated cascaded with an array of the mentioned line sources in order to form a planar plasma.
  • the microwave arrangement is usually operated at frequencies of 300 MHz to 30 GHz.
  • a quartz plate is applicable instead of the quartz tube.
  • quartz instead of quartz as a tube or plate material, other microwave permeable materials, such as e.g. Oxide ceramics or Teflon be applied. It is also possible, by means of a slot extraction or a Hornaufweitung a waveguide to couple the microwave radiation surface in the vacuum.
  • the field strength is greatest and can be stimulated here also the easiest.
  • the plasma can also be shielded by the fact that radiation can be absorbed and removed; Thus, further propagation of the radiation is prevented or at least mitigated.
  • a so-called dense plasma between the coupling and the container 2 is avoided in the exemplary embodiment described here. Therefore, a sufficient part of the radiated power is also in the interior of the container 2 in order to stimulate a plasma 8 there as well.
  • the distance between the wall of the container 2 and the coupling can therefore be chosen so that either only inside or at least predominantly inside, only outside at a great distance or inside and outside a plasma is applied simultaneously. If multiple plasma sources 9 are used, complete treatment of all wall regions of the container 2 could be achieved successively or simultaneously at the same time.
  • FIG. 3 shows a capacitive high-frequency coupling (RF) for plasma generation for electromagnetic waves of approximately 10 kHz to 27 MHz.
  • the coupling takes place between an electrode 20 and a counter electrode 21, which may be the grounded housing of the vacuum chamber 5, to ground, wherein the electrode 20 has a high Ion bombardment can ensure, if this electrode 20 has a smaller area in relation to the much larger area of the counter electrode 21.
  • FIG. 1 An inductive high-frequency coupling by a coil as a worm antenna 22 can be seen from FIG.
  • This screw antenna 22 is in atmospheric pressure and is mounted above a quartz or Teflon window 23 in the chamber 5, which separates the chamber interior under vacuum from the outside under normal or atmospheric pressure.
  • FIG. 5 shows an inductive high-frequency coupling, as shown in FIG. 4, with additional introduction of a so-called Faraday shield 23, which contributes to decoupling the magnetic from the electrical effect of the irradiated field.
  • the containers 2 are in a nearly horizontal or slightly inclined rotating tube 24, in the middle, for example, a quartz tube 12, as described with reference to Figure 2, is placed.
  • a quartz tube 12 as described with reference to Figure 2
  • one or more plasma sources may also be arranged around the rotating tube 24, in which case the tube 24 is made of quartz or Teflon.
  • FIG. 8 shows an exemplary embodiment in which the containers 2 are unrolled on an inclined plane 25.
  • the transverse to the transport direction 26 containers 2 are set in rotation about its longitudinal axis.
  • the two horizontally arranged rollers 27 and 28 (see rollers 10 and 11 of Figure 2) have a thread or a thread-shaped applied zone with a higher friction coefficient to the rest of the surface of the roller and act as a worm drive so that the containers 2 can be transported in a defined manner from the lock 4 to the lock 6. It may also be sufficient to provide only one roller with such a thread structure and to use the second roller without thread structure as an abutment, possibly with a low coefficient of friction of its surface.
  • the rolls with the thread 27 and 28 according to FIG. 9 can also be made vertical or almost vertical, if e.g. is ensured by a third roller or a plate with a low coefficient of friction of the surface that the containers 2 do not fall out of the guide. In this case, it is also possible that the containers 2 can be transported with their opening down.
  • a plate can also be the coupling window of the electric field that is mounted to excite a plasma in a vacuum.
  • the containers can be transported according to Figure 10 and 11 on rollers 32 which are driven on a chain 33 via a gear drive.
  • the chain links are designed so that the containers 2 lying on them are set in rotation about their longitudinal axis.
  • one or more additional plasma sources 34, 35 can be placed below or next to the transport device, here for example according to FIG.
  • the plasma source 35 under the transport device could do so be used, possibly from the treatment area falling down containers 2, or other objects, parts or particles also to sterilize.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour stériliser des contenants (2). Selon ce procédé, un traitement au plasma est effectué, au cours d'au moins une étape, dans une chambre (5) par excitation d'une oscillation électromagnétique de sorte que le plasma (8) soit excité dans un vide à proximité des zones à stériliser du contenant (2). Ces zones à stériliser dudit contenant (2) sont approchées du dispositif (9) produisant l'oscillation, entre l'entrée (4) et la sortie (6) dans la chambre (5) lors du déplacement du contenant (2) et/ou du dispositif (9) produisant l'oscillation, pendant un ou plusieurs laps de temps préalloués, de sorte qu'un plasma (8) soit excité dans ces zones, à l'intérieur et/ou à l'extérieur du contenant. La chambre (5) abrite un dispositif de transport (5) qui provoque un mouvement sensiblement rotatif du contenant (2) pendant son transport entre l'entrée (4) et la sortie (6) dans ladite chambre (5).
EP02754336A 2001-08-08 2002-07-09 Procede et dispositif pour steriliser des contenants Withdrawn EP1417129A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10138938 2001-08-08
DE10138938A DE10138938A1 (de) 2001-08-08 2001-08-08 Verfahren und Vorrichtung zur Sterilisation von Behältnissen
PCT/DE2002/002503 WO2003016143A1 (fr) 2001-08-08 2002-07-09 Procede et dispositif pour steriliser des contenants

Publications (1)

Publication Number Publication Date
EP1417129A1 true EP1417129A1 (fr) 2004-05-12

Family

ID=7694795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02754336A Withdrawn EP1417129A1 (fr) 2001-08-08 2002-07-09 Procede et dispositif pour steriliser des contenants

Country Status (5)

Country Link
US (1) US7485258B2 (fr)
EP (1) EP1417129A1 (fr)
JP (1) JP2004538218A (fr)
DE (1) DE10138938A1 (fr)
WO (1) WO2003016143A1 (fr)

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Also Published As

Publication number Publication date
US7485258B2 (en) 2009-02-03
DE10138938A1 (de) 2003-02-20
WO2003016143A1 (fr) 2003-02-27
US20050019209A1 (en) 2005-01-27
JP2004538218A (ja) 2004-12-24

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