EP1187645A1 - Pompe a liquide a fonctionnement mecanique - Google Patents

Pompe a liquide a fonctionnement mecanique

Info

Publication number
EP1187645A1
EP1187645A1 EP00951226A EP00951226A EP1187645A1 EP 1187645 A1 EP1187645 A1 EP 1187645A1 EP 00951226 A EP00951226 A EP 00951226A EP 00951226 A EP00951226 A EP 00951226A EP 1187645 A1 EP1187645 A1 EP 1187645A1
Authority
EP
European Patent Office
Prior art keywords
bag
liquid
pump according
pump
pressure
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Withdrawn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
EP00951226A
Other languages
German (de)
English (en)
Inventor
Roland Wex
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 EP1187645A1 publication Critical patent/EP1187645A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1072—Valves; Arrangement of valves the valve being an elastic body, the length thereof changing in the opening direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10—Bag-type containers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/1475—Inlet or outlet ports

Definitions

  • the invention relates to a mechanically operated liquid pump, in particular for medical and nutritional liquids.
  • a wide variety of types of liquid pumps are used in connection with the conveyance of medical and nutritional fluids.
  • Pumps operated for example electro-energetically, electrochemically, gaseously, mechanically, electromechanically and mechanically-physically are known.
  • many of these pumps can only be used after a longer start-up time and often offer the user and consumer inadequate dosing accuracy.
  • the known pump systems are otherwise quite expensive and not very advantageous from an ecological point of view. Often they cannot be used by the user in a portable manner.
  • a liquid pump for medical purposes is known from practice ("Accufuser", medac gmbh, Hamburg), which has an elastic bag which is provided with an inlet and outlet line.
  • the outlet line leads to the patient, while the access line serves to fill the elastic pouch with a liquid medication.
  • a flow limiting valve is arranged in the outlet line to the patient.
  • the bag has a volume between 60 and 100 ml. -
  • Such a pump is quite complex to put into operation because the bag must be stretched when filling. Since the flow rate of the liquid results solely from the resilience of the elastic bag, the liquid can only be dispensed with low pressure. Since only the elastic wall of the bag acts on the medical liquid, it is not ensured that the liquid is pressed out of the bag with largely the same pressure and that the bag is emptied completely.
  • the design principle of this pump makes it necessary to use the flow regulator.
  • a liquid pump for medical liquids is known from practice ("SmartDose " “, Pro-Med GmbH, Linz, Austria), in which a container holding the liquid is connected via a channel to a reaction space in which a carbon dioxide cell is accommodated. When this cell is activated, carbon dioxide evolves, which pressurizes the liquid in the container to be dispensed and a regulator valve ensures that a substantially constant amount of liquid is dispensed from the container per unit of time.
  • a mechanically operated liquid pump for medical liquids is known from US Pat. No. 5,334,197, in which a chamber for receiving the liquid is only acted upon mechanically and the contents of which are thereby pressurized to dispense the liquid.
  • the chamber is formed by a thin wall and an expandable wall, this wall being connected to a leaf spring.
  • the leaf spring Before using the pump, the leaf spring is held in a cover, which thus fixes it in a defined shape. If the cover is removed from the leaf spring, the spring element snaps over into a position in which it is bent toward the elastic wall. As a result, the elastic wall is stretched by the liquid in the chamber, in a shape that corresponds to the curvature of the snap-on leaf spring.
  • a mechanically operated liquid pump in particular for medical and nutritional liquids, which has a bag for holding the liquid, a line connected to the bag for dispensing the liquid in the bag from the bag, and a pump Device for exerting a compressive force on the bag for dispensing the liquid therefrom, the device for exerting the compressive force having an elastic element for acting on one side of the bag and a further element for acting on the opposite side of the bag.
  • Such a mechanically operated liquid pump is extremely simple. It has the bag with the liquid which is acted upon by the device for exerting a compressive force on the bag.
  • the essence of this device can be seen in the fact that at least a partial area of the device has an elastic element for acting on the bag, thus pressing the bag against its counter-support from this side.
  • This counter-support generally referred to as an element for acting on the opposite side of the bag, is advantageously rigid, so that the elastic element presses the bag against the rigid element.
  • the device for exerting a compressive force has a pressure plate which acts under the action of a spring element and which represents the element for acting on the opposite side of the bag.
  • the active pressure forces on the bag are thus not only applied by the elastic element but also by the spring element.
  • the action of the spring element ensures in particular that the bag can be completely emptied, since when the elastic element is largely returned from its deflected position and consequently its pressure force is reduced, the spring element still acts on the bag with a defined pressure force .
  • the spring element can be designed, for example, as one or more spiral springs which exert a compressive force or else as a leaf spring.
  • the liquid pump Due to the particularly simple design of the liquid pump according to the invention, it offers a wide range of uses.
  • the user can use the pump anywhere immediately without long start-up times. It can be used by the user, as well as used statically, in all normal areas of life outside, like within medicine. It can be used sterilized and ensures minimal operation / handling.
  • the pump is inexpensive to manufacture due to the simple design of the few components, which is a prerequisite for using it in particular in outpatient and financially weak markets.
  • the low weight of the pump enables it to be used in accident, emergency doctor, hospital and catastrophe areas.
  • the functional elements of the pump can be replaced individually or as a whole.
  • the pump is suitable for short or long delivery times, for open or closed systems, for unfilled or prefilled infusion systems of different geometrical designs, in particular also in connection with the use as a micropump, i.e. systems from 1 to 10 ml.
  • the different sized bags that are used in the pump or the pump itself can be used once or reused several times. Depending on the selected elasticity of the elastic element, different flow rates and drain times can be achieved.
  • the elastic element is designed in such a way that the liquid is squeezed out of the bag until the elastic element is in contact with the other element to act on the opposite side of the bag and in this state the bag is emptied, taking into account the resetting behavior of the Spring element.
  • the pump according to the invention is independent of electrical energy. It can be used anywhere in the temperature range of at least 10 to 60 ° C.
  • the raw materials used are biodegradable and regenerable.
  • the pump is therefore environmentally friendly and, due to its simple design and construction, can be manufactured inexpensively in a small packaging size and offered to the market.
  • the pump can be used for different viscosities, for example for infusion, enteral nutrition, transfusion, etc. It can be used in all liquid application areas of small and medium flow rates in short or long times.
  • the pump can be interrupted simply by deactivating the device for exerting the pressure force and can simply be restarted if necessary, in contrast to the pump according to US Pat. No. 5,334,197, in which extensive handling is necessary.
  • the pump can be equipped with a reusable electronic signaling device which indicates the end of the liquid transport or the emptying of the bag.
  • the device for exerting the compressive force on the other side of the bag is expediently designed as a hard pressure plate which, in order to ensure complete emptying of the bag, is designed so as to be curved toward the elastic element.
  • the two elements are preferably articulated by means of a hinge and can be closed by means of a snap connection. To ensure that the bag is permanently held firmly between the two elements, they should not only be closable on the side facing away from the hinge, but also in the side areas, in particular by means of a snap connection. Apart from the permanent connection in the area of the hinge, the two elements can thus also be connected to one another in the other areas.
  • a flow valve interacts with the pump, which is connected to the pump output volume flow largely constant.
  • This valve has a particularly simple design and is therefore adapted to the wide field of application of the pump.
  • the valve preferably has a valve body located in a housing, which is provided with a liquid channel, the liquid pressure present in the valve acting on a pressure surface of the valve body and depending on the pressure present, the liquid channel is more or less compressed by deformation of the elastic valve body.
  • This valve can be used for different flow rates. Although flow rates of> 1000 ml per hour are quite conceivable, a flow rate of 0.5 to 10 ml per hour is regarded as the preferred area of application.
  • FIG. 1 shows a view of a first embodiment of the infusion pump when the device for exerting a compressive force on an infusion bag is not activated
  • FIG. 2 shows the embodiment according to FIG. 1 in a corresponding view with activated device for exerting the compressive force on the bag
  • FIG. 3 shows a longitudinal central section of the valve used in the pump variant according to FIGS. 1 and 2 for largely maintaining the volume flow output by the pump
  • FIG. 4 shows a view of a second embodiment of the infusion pump, viewed in the direction of the main surface, this infusion pump being provided with a valve for keeping the volume flow constant,
  • FIG. 5 shows a side view of the infusion pump shown in FIG. 4, as shown in FIG. 2,
  • FIG. 6 shows an end view of the infusion pump shown in FIGS. 4 and 5
  • FIG. 7 shows the infusion pump in a representation according to FIG. 2, but without a valve
  • FIG. 8 shows the infusion pump in a representation according to FIG. 5, but without a valve
  • FIG. 9 shows a prefilled infusion system using an inventive fluid pump designed as a micropump, in a first view (according to arrow Y in FIG. 10),
  • FIG. 10 shows the infusion system according to FIG. 9 in a second view (according to arrow Z in FIG. 9),
  • FIG. 11 shows the infusion system shown in FIG. 10, when the device for exerting the compressive force on the infusion bag is not activated
  • FIG. 12 shows an embodiment modified from the embodiment according to FIG. 1 and
  • FIG. 13 shows an embodiment modified compared to FIG. 4.
  • the embodiment according to FIGS. 1 to 3 differs from that according to FIGS. 4 to 6 only in that the bag 1 used for receiving the medical and nutritional fluid 2 does not only have a line 3 for dispensing the liquid from the bag 1, but , as in the embodiment according to FIGS. 4 to 6, also has a line 4 for feeding the liquid into the bag 1.
  • the bag 1 can thus be refilled via the line 4, making this pump system usable several times.
  • Both embodiments have a valve 5 connected to the outlet line 3, which serves the purpose of additionally ensuring that the volume flow output by the pump is kept largely constant.
  • FIGS. 4 and 6 With regard to the design of the pump, reference should also be made to the representation of FIGS. 4 and 6 with regard to the embodiment according to FIGS. 1 and 2, and additionally to the representation of FIGS. 1 and 3 with respect to the embodiment according to FIGS.
  • the bag 1 is formed from two foils which are welded together in the region of the peripheral edge.
  • the respective film has an essentially rectangular surface.
  • the bag 1 is filled with the medical liquid 2 so that it is on its main surface seen, has a substantially rectangular shape.
  • the line 3 goes from the bag.
  • the line end is provided with a Luer lock connector 6 which interacts with a complementary Luer lock connector 7 of the valve 5.
  • a cannula 8 goes from the valve 5 to the vein, not shown, of a patient's arm.
  • a butterfly cutlery can optionally be provided in the area of the cannula 9.
  • the infusion bag which is preferably made of PVC, in particular has an infusion volume of 1, 2, 5 or 10 ml.
  • the device for exerting a compressive force on the bag 1 for dispensing the liquid from the latter has a tensioning frame 9 in which an elastic film is located on the side facing the bag 1 10 is held by being glued to the tenter 9, for example.
  • the tenter 9 is in accordance with the outer design of the bag
  • I formed rectangular. It is mounted in the manner of a hinge 12 in a hard pressure plate 11, which has a rectangular design corresponding to the clamping frame 9.
  • the hard pressure plate 11 has a rectangular design corresponding to the clamping frame 9.
  • the hard pressure plate 11 is provided on its side facing the stenter 9 with a curvature 13 directed thereon.
  • the hard pressure plate 11 On the side facing away from the hinge 12, thus in the area of the other narrow side, the hard pressure plate 11 is provided with two locking lugs 14 which engage behind the corresponding narrow side of the tensioning frame 9 when it is pivoted onto the pressure plate 11.
  • the curvature 13 of the pressure plate 11 extends over the entire width of the opening in the clamping frame 9.
  • the liquid is conveyed through the line 8 and the valve 5 to the cannula 8 in accordance with the resilience of the elastic film 10.
  • the conveying process can be interrupted in a simple manner by releasing the latching connection 14 and moving the clamping frame 9 into the open position.
  • FIG. 3 illustrates the valve used in the pump according to the invention for keeping the volume flow output by the pump largely constant.
  • the valve consists of a lower housing part 15, a valve body 17 inserted therein and an upper housing part 16.
  • the lower housing part 15 and the upper housing part 16 are made of plastic and are designed as injection molded parts.
  • the valve body 17 consists of an elastic material with an adjusted modulus of elasticity, so that the valve body 17 can change its shape and thus its passage cross section if the pressures in the bag 1 change, if necessary.
  • the lower housing part 15 passes through an inflow channel 18, the upper housing part 16 through an outflow channel 19.
  • the connector 20 assigned to the inflow channel 18 is provided with the connection 7, which has an external thread 21, so that the valve 5 in this area has the complementary internal thread having Luer lock connector 6 can be connected.
  • the nozzle 22, to which the drainage channel 19 is assigned, is surrounded by a ring extension 23 which is provided with an internal thread 24.
  • the valve 5 can be connected to the cannula 8, which has a plug with an external thread.
  • the upper housing part 16 is provided on its side facing the lower housing part 15 with a stepped cylinder chamber into which a cylinder extension 25 of the lower housing part 15, to which the inlet channel 18 is also assigned, is fitted.
  • the end face 26 of the cylinder extension 25 contacts the facing outer end face 27 of the valve body 17, which is designed as a ring.
  • the cylinder extension 25 can slightly compress the elastic valve body 17.
  • the lower housing part 15 and the upper housing part 16 are connected to one another as desired, for example welded, glued or screwed.
  • the valve body 17 has on its side facing the lower housing part 16 an annular recess 28 which has the function of a liquid pressure chamber. Radially within the annular recess 28, a pressure remains in the valve body 17 flank section 29, which is designed, for example, as a truncated cone. In the central axis of rotation of the valve body 17, the pressure flank section 29 has a liquid channel 30 which completely penetrates the valve body 17. The thickness of the pressure flank section
  • the radially outer sealing flank wall 31, the valve body base 32 facing the upper housing part 16 and the diameter of the liquid channel 30, and the elasticity of the valve body 17 are coordinated with one another with regard to the desired flow rate.
  • the liquid channel 30 is matched to a minimum flow rate. If the pressure upstream of the valve body 17 increases, it causes the valve body base 32 to be compressed more. Furthermore, the sealing flank wall 31 presses more strongly against the upper housing part 16. Because of the design of the frustoconical pressure flank section 29 surrounding the liquid channel 30 and the resulting pressure force component perpendicular to the longitudinal direction X of the liquid channel
  • the diameter of the liquid channel 30 is reduced, at least in the region of the pressure flank section 29.
  • the access line 4 to the bag 1 is provided with a Luer lock connection 33 which can be closed. Via this connection 33, after unscrewing the closure, the bag 1 can be refilled, for example by means of a syringe. After the connection has been closed, the bag can then be inserted between the clamping frame 9 and the pressure plate 11 in the same way as in the embodiment according to FIGS. 1 and 2 and can be pressurized by applying the elastic film 10.
  • FIG. 7 corresponds to the embodiment according to FIG. 2, the embodiment according to FIG. 8 of the embodiment according to FIG. 5, each with the difference that the embodiments according to FIGS. 7 and 8 have no valve 5.
  • This valve is only required if it is on the Maintaining a fairly constant volume flow when dispensing the liquid from the bag 1 arrives.
  • FIGS. 9 to 11 show a prefilled infusion system using a micropump, in which the bag 1 has a capacity of 1 to 10 ml.
  • the pump 34 designed according to the above-described embodiments is connected on the inlet side to an injection piece 35 and on the outlet side to the valve 5.
  • a hose 36 connects the valve 5 to a butterfly system 37, to which a cannula 38 is connected.
  • a protective cap 39 can be plugged onto this.
  • the pump 34 or the butterfly system 37 can be attached to the patient by means of plasters 40 and 41. The direction of flow in the system is illustrated by arrow A.
  • the embodiment according to FIG. 12 differs from that according to FIG. 1 only in that the pressure plate 11, which is flat in the exemplary embodiment and comes into contact with the bag 1, by means of a plurality of compression coil springs 42 in a plate-shaped pressure plate receptacle 11a.
  • This has the hinge 12 and one or more locking lugs 14 for connection to the tensioning frame 9.
  • the embodiment according to FIG. 13 differs from that according to FIG. 4 only in that the pressure plate 11 or the pressure plate receptacle 11a is not only provided with latching connections 14 in the area opposite the hinge 12, but also in the lateral areas of the rectangular tenter frame 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe à liquide à fonctionnement mécanique, destinée en particulier au pompage de liquides médicaux et physiologiques nutritionnels. Cette pompe présente, selon l'invention, les éléments caractéristiques suivants: une poche (1) destinée à recevoir le liquide (2); une conduite (3) reliée à la pompe et servant à délivrer le liquide se trouvant dans la poche; et un dispositif (9 à 14) servant à exercer une force de pression sur la poche pour qu'elle puisse délivrer le liquide contenu dans celle-ci, ce dispositif comportant un élément élastique (10) lui permettant d'agir sur un côté de la poche ainsi qu'un autre élément (11, 13) lui permettant d'agir sur le côté opposé de la poche. Une telle pompe à liquide à fonctionnement mécanique est d'une construction extrêmement simple et d'une fabrication particulièrement économique, et, en outre, elle est d'une utilisation polyvalente.
EP00951226A 1999-06-19 2000-06-19 Pompe a liquide a fonctionnement mecanique Withdrawn EP1187645A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999128131 DE19928131C2 (de) 1999-06-19 1999-06-19 Mechanisch betriebene Flüssigkeitspumpe
DE19928131 1999-06-19
PCT/DE2000/001933 WO2000078377A1 (fr) 1999-06-19 2000-06-19 Pompe a liquide a fonctionnement mecanique

Publications (1)

Publication Number Publication Date
EP1187645A1 true EP1187645A1 (fr) 2002-03-20

Family

ID=7911851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951226A Withdrawn EP1187645A1 (fr) 1999-06-19 2000-06-19 Pompe a liquide a fonctionnement mecanique

Country Status (5)

Country Link
EP (1) EP1187645A1 (fr)
JP (1) JP2003502563A (fr)
AU (1) AU6425000A (fr)
DE (2) DE19928131C2 (fr)
WO (1) WO2000078377A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058121A1 (de) 2000-11-22 2002-05-23 Roland Wex Mechanisch betriebene Flüssigkeitspumpe
EP1321156A1 (fr) 2001-12-19 2003-06-25 WEX, Roland Soupape servant à maintenir sensiblement constant le débit d'un fluide
DE102009002294B3 (de) * 2009-04-08 2010-05-27 Sambeck, Günter van Blasebalg aus Papier und Kartonage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829674A (en) * 1954-06-11 1958-04-08 August L Segelhorst Automatic fluid control means
US4596558A (en) * 1985-09-13 1986-06-24 Queen's University At Kingston Pulsed external medication dispenser
US5105983A (en) * 1989-10-31 1992-04-21 Block Medical, Inc. Infusion apparatus
US5334197A (en) * 1990-09-25 1994-08-02 Science Incorporated Flexible base fluid delivery apparatus
BR9304747A (pt) * 1993-11-17 1995-07-11 Claro Jorge Antonio Rodrigues Injetor de medicamentos
IL118689A (en) * 1996-06-20 2000-10-31 Gadot Amir Intravenous infusion apparatus
US5799700A (en) * 1996-06-27 1998-09-01 Teh; Eutiquio L. Automatic intravenous flow control device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0078377A1 *

Also Published As

Publication number Publication date
WO2000078377A1 (fr) 2000-12-28
JP2003502563A (ja) 2003-01-21
DE19928131A1 (de) 2000-12-28
DE19928131C2 (de) 2002-03-07
DE10081671D2 (de) 2002-08-01
AU6425000A (en) 2001-01-09

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