EP4677344A1 - Vorrichtung für spektroskopische messungen an bioreaktoren - Google Patents
Vorrichtung für spektroskopische messungen an bioreaktorenInfo
- Publication number
- EP4677344A1 EP4677344A1 EP24709729.8A EP24709729A EP4677344A1 EP 4677344 A1 EP4677344 A1 EP 4677344A1 EP 24709729 A EP24709729 A EP 24709729A EP 4677344 A1 EP4677344 A1 EP 4677344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spectrometer
- holder
- window
- coupling
- spectrometric
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
- G01N2021/8416—Application to online plant, process monitoring and process controlling, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/022—Casings
- G01N2201/0221—Portable; cableless; compact; hand-held
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/022—Casings
- G01N2201/0227—Sealable enclosure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/024—Modular construction
- G01N2201/0245—Modular construction with insertable-removable part
Definitions
- the invention generally relates to spectrometric devices for process analysis technology, in particular for bioprocess technology.
- the invention relates to a device with a holder which is designed to couple an analyzer-capturing spectrometer to a container volume or an aliquot of this volume.
- the invention therefore also relates to process control in production processes in containers and systems for cultivating biological material, in particular bioreactors or flow cells.
- Bioreactors are used to cultivate microorganisms, animal and plant cells and thus open up a broad field of application for biotech production processes, which in particular relate to the biopharmaceutical production of substances and the production of cells and cell products (so-called cellular agriculture).
- improvements in product yield and thus profit increases are being pushed forward, particularly for the production of biopharmaceuticals.
- Various approaches are available for controlling and monitoring production processes, increasing product yield and reducing costs.
- the processes can be controlled and monitored by determining substrate and product concentrations.
- regular sampling is required to ensure adequate process control.
- This and the determination of substrate and product concentrations are usually time-consuming and associated with a contamination risk, which can lead to the loss of the batch in the bio- or photobioreactor.
- Reasons for this include handling when the cultivation unit is open and resource-intensive offline analysis carried out outside the respective reactor.
- the control of the processes and thus the yield can be optimized by carrying out real-time process control of key parameters.
- in-situ monitoring of parameters such as temperature, metabolism or substances relevant to product formation, as well as the control of cultivation conditions in real time.
- Spectroscopic recording of parameters is particularly suitable for this, especially since optical recording can be carried out without contact and without contamination.
- the use of spectroscopic methods such as Raman spectroscopy and fluorescence spectroscopy with corresponding spectrometers is known for monitoring the bioreactor.
- the spectrometers are each set up to detect one or more analytes that are located in a container volume.
- the analytes include in particular both components of the substrates used in a process and components of the products of the process.
- Raman spectrometer systems can be used for real-time parameter control.
- Such process analysis techniques can be installed using a fiber optic cable and immersion probe on a port of a bioreactor, or generally on any disposable or reusable container for cultivating biological material, because such a port forms an opening into the interior of the container.
- the port of a bioreactor, or generally of a process stage unit often corresponds to a certain standard, such as an Ingold port or a PG 13.5 port.
- the spectrometer includes a spectrometer unit, a fiber optic cable and a submersible probe sensor head.
- the space requirement can be limited, especially for smaller containers or in other space-limited situations, e.g. in a clean room environment.
- the operation by the personnel should be mechanically easy to carry out due to the personal protective equipment that must be worn, such as protective clothing with gloves.
- Another problem is that biotechnological processes often run for a long time and the spectrometer does not need to be mounted on the measuring volume all the time, or even cannot or should not remain mounted due to the process. The latter is the case, for example, if
- the spectrometer should therefore be easy to connect to the measuring volume for measurements. However, this can lead to measurement inaccuracies if the measuring position of the spectrometer is not exactly returned to during a repeated measurement.
- Another challenge here is that the plastics often used in bioprocessing technology do not allow for precise positioning due to their easy deformability. The main problem is that the plastic parts generally cannot be manufactured with the required precision, for example by shrinking after production.
- Compact Raman spectrometers such as those known from CN 109682791 A, may not be able to be integrated into bioreactors in a high-performance and sterile manner, or the Raman systems consist of a housing, e.g. in 19-inch format, in which one or more lasers are installed as a light source, fiber couplings, optics and detection units.
- the housings are dimensioned to accommodate lasers with an output of e.g. up to 500 mW in order to achieve sufficient sensitivity in the measurement despite the losses caused by the fiber optic technology.
- the fiber optics allow a certain degree of flexibility through different fiber cable lengths. The same applies to the possibility of using different measuring probe heads.
- the power of the laser cannot be increased arbitrarily to compensate for losses in the optical path; a biogenic analyte degenerates above a compound-specific threshold value.
- state-of-the-art Raman systems are limited in their practicability due to their space requirements.
- the invention is based on the object of providing a spectrometric device, preferably for bioprocess analysis, but possibly also for other processes in sterile-tight systems, which solves the above-mentioned problems a small space requirement, easy handling and a reproducible coupling to an interaction volume, thus mitigating the part of the container volume that interacts with the spectroscopic analysis.
- a spectrometric device for bioprocess analysis for spectroscopic measurement on sterile, sealed measuring volumes, the device having a port or a holder and a spectrometer that can be repeatedly coupled and decoupled from the holder.
- the holder comprises a plastic body and a window that is sealingly attached to the plastic body and comprises a metallic frame and a window element that is transparent to the radiation to be detected by the spectrometer and that seals an opening in the frame.
- the spectrometer has a metallic head with a stop surface that can be brought into contact with the window to couple the spectrometer and the holder.
- the spectrometric device also comprises a coupling device with which the spectrometer and the holder can be detachably coupled to one another in such a way that when the spectrometer and the holder are coupled, the stop surface and the window are pressed against one another.
- the force can be limited, or independent of the operation of the coupling device within a predetermined or permissible range.
- Plastic as the material of the holder is particularly preferred, among other things, because this makes it easier to sterilize with ionizing radiation, such as gamma radiation.
- a disadvantage is the low dimensional stability, which prevents the spectrometer from being precisely aligned with the container wall, or more generally the wall of the container volume.
- the coupling device brings the spectrometer directly into contact with the window, which is not made of plastic
- precise positioning of the spectrometer can be achieved in a surprisingly simple manner despite the holder otherwise being predominantly made of plastic.
- the advantage of precise positioning at least in the axial direction with respect to the holder becomes apparent when, for example, intensity values are to be compared with one another. after the spectrometer has been removed and re-installed.
- the measured value depends sensitively on the interaction volume and thus also strongly on the position of the focus in relation to the window. Therefore, a precise spatial alignment of the spectrometer is very advantageous for recording comparable values.
- the interaction volume in Raman spectroscopy with a focused laser beam is essentially determined by the focusing cone.
- fluorescence spectroscopy too, the intensity losses due to the phase transitions from liquid to solid and especially solid to gas are associated with reflection losses, etc. Therefore, accurate positioning is also advantageous here.
- the invention therefore also relates to a method for monitoring a process in bioprocessing, in which a spectrometer is mounted on a holder on a sterile, sealed container volume of a bioprocessing plant, so that a spectrometric device according to this disclosure is obtained, and wherein a signal dependent on the intensity of radiation entering the spectrometer through the window from the measuring volume is measured by means of this spectrometric device, and wherein the spectrometer is dismantled and reconnected to the holder at a later point in time and the measurement is repeated, and wherein a comparison of these signals is preferably then carried out.
- the interaction volume is understood to be the part of the container volume from which radiation for the spectroscopic measurement is received by the spectrometer. This volume can possibly be very small and can be limited essentially to the focus of a focused excitation light beam.
- the interaction volume is generally understood to be the volume that is adjacent to the spectrometer and is detected by it.
- the container volume is generally understood to be the entire volume of the container that can be filled with a medium and is sterile-tight. Accordingly, in the In the case of a reactor, the container volume is the volume in which the biological process takes place. In the case of a flow cell, the container volume is given by the corresponding volume of the flow cell.
- the container that provides the sterile, sealed container volume can in particular be a single-use container or a multi-use container.
- the container volume can also be provided by a flow cell through which the medium to be analyzed flows and which can be part of a hose system.
- the flow cell can also be designed as a single-use or multi-use component. A single-use component is only used once and then discarded, whereas a multi-use component can be cleaned and sterilized and then used again.
- containers are, in particular, disposable bioreactors designed as flexible bags (e.g. composite films made of polyethylene (PE) and polyvinyl alcohol (PVA)), disposable mixing systems with an agitator in a flexible bag, disposable bioreactors with a rigid polymer container (e.g. polycarbonate (PC)), and reusable bioreactors made of stainless steel.
- PE polyethylene
- PVA polyvinyl alcohol
- PC polycarbonate
- All of these containers can be sterilized at least once in order to provide the sterile, tight container volume within a process.
- the device can be used for various processes, in particular the spectrometric device can be used for processes involving living cells, but also any other reactions and processes, in particular cell-free processes, are conceivable as an application.
- a sterile, tight volume is understood to mean in particular a volume or a container which has a helium leak rate of less than 1 • 10' 6 mbar-l/s, preferably less than 1 • 10' 7 mbar-l/s, particularly preferably less than 1 - 10' 8 mbar-l/s.
- Fig. 1 shows a perspective, partially cutaway view of a connecting element as part of the coupling device.
- Fig. 2 shows a spectrometric device before coupling the spectrometer and the holder.
- Fig. 3 shows the device in working position with the spectrometer coupled to the holder.
- Fig. 4 shows a bracket in a partially cutaway perspective view.
- Fig. 4a shows another embodiment of the spectrometric device in a schematic representation.
- Fig. 4b shows a perspective view of the connecting element.
- Fig. 5 shows a holder with a plastic body and several adapters for adapting different coupling devices.
- Fig. 6 shows the holder with an attached adapter before locking in a partially cutaway perspective view
- Fig. 7 the holder with locked adapter also in cut-away perspective view.
- Fig. 8 shows a part of a spectrometer with a flange arranged on a shaft for attaching the spectrometer to a holder.
- Fig. 9 shows the holder suitable for the spectrometer according to Fig. 8.
- Fig. 10 shows the spectrometer from Fig. 8 coupled with a clamp to the holder according to Fig. 9.
- Fig. 11 shows a holder 3 in plan view, seen in the attachment direction of the spectrometer 5.
- Fig. 12 shows a spectrometer with housing in plan view of a receptacle for attachment to the holder according to Fig. 11.
- Fig. 13 shows the holder 3 and the housing 54 with the receptacle 44 in opposite positions.
- Fig. 14 shows the holder and the spectrometer in the assembled position before locking.
- Fig. 15 shows the spectrometer 5 and the holder 3 in the locked position.
- Fig. 16 shows a bioprocessing device with a holder for mounting a spectrometer.
- Fig. 17 shows a spectrometric device 1 with a spectrometer 5 and its optical components in a schematic section.
- Fig. 1 to Fig. 3 show an embodiment of the spectrometric device in which the defined force with which the spectrometer and the window are brought into contact is generated by a spring.
- this embodiment is based on the fact that the device 1, in particular its coupling device 10, is designed such that the force with which the stop surface 51 of the spectrometer 5 and the window 7 of the holder 3, which can also be referred to as a port or as a sensor receptacle according to DE 10 2018 108 325 B4, or as a composite element according to EP 3 747 983 B1, is generated by elastic deformation of at least part of the spectrometric device 1.
- This principle also forms the basis of the other embodiments shown in the figures.
- the force for pressing the spectrometer 5 and the holder 3, or the window 7 arranged in the holder 3, together is generated at least partially by a spring 103.
- the force for pressing together can also be provided as a magnetic force by one or more magnets.
- Another embodiment implemented in the example in Fig. 1 to Fig. 3 is that the coupling of spectrometer 5 and holder 3 is carried out by means of a screw connection.
- Fig. 1 shows a perspective, partially cutaway view of a connecting element 110 which forms part of the coupling device 10.
- the Fig. 2 and Fig. 3 show the spectrometric device 1 as a whole, with holder 3 and spectrometer 5, as well as the coupling device 10.
- the connecting element 110 of the coupling device 10 comprises the threaded sleeve 101 shown in Fig. 1, as well as a spring 103.
- the coupling device 10 is designed such that the spring force of the spring 103 acts upon compression between the threaded sleeve 101 and the spectrometer 5.
- the spectrometer 5 is pressed axially in the direction of the window 3 by the spring force.
- the coupling device 10 further comprises mutually corresponding threads 104, 105 on the holder 3 and on the threaded sleeve 101, so that the threaded sleeve 101 can be screwed onto the holder 3, and the movement of the threaded sleeve 101 in the axial direction towards the holder 3 compresses the spring 103 and the stop surface 51 of the spectrometer 5 is pressed against the window 7 with the spring force generated by the compression of the spring 103.
- the force for pressing the stop surface 51 against the window 7 can also be provided by one or more magnets.
- the thread 105 on the connecting element 110 is designed as an internal thread and the thread 104 on the holder 3 is designed as a corresponding external thread. It is clear to the person skilled in the art that a reverse configuration is also possible.
- Fig. 2 shows the spectrometric device 1 with the spectrometer 5 attached to the holder 3, but before screwing.
- the spring 103 is not yet further compressed, but can already be under pre-tension.
- the stop surface 51 of the spectrometer 5 can already come into contact with the window 7 in this state, as in the example shown.
- a contact force on the window is generally not yet exerted on the spectrometer 5 by the coupling device 10 in this position.
- Fig. 3 shows the spectrometric device 1 in the working position, i.e. after actuation of the coupling device 10.
- the actuation of the coupling device 10 consists in rotating the threaded sleeve 101 relative to the holder 3.
- the approach of the threaded sleeve 101 compresses the spring 103, whereby the spring force acts between the spectrometer 5 and the holder 3.
- the contact force from the spectrometer 5 to the window 7 is essentially caused by the spring force of the compressed spring 103 and thus a defined, predetermined force. This prevents very high forces from acting directly through the screw connection on the window 7, which could potentially damage it and cause it to leak.
- the spring 103 locks the screw connection and thus reduces the risk of the screw connection coming loose during operation.
- the spring 103 is dimensioned such that its spring force in the working position is lower than the force that would be required to push out, or more generally to damage, the window 7 and/or its fastening in the housing of the holder 3.
- a safety reserve can also be easily provided here between the spring force exerted and the force critical for the window to fail.
- the spring force when the spring 103 is compressed is at most 2/3 of the force that would be required to push out the window 7.
- the spectrometer 5 since the spectrometer 5 is pressed against the window 7 with sufficiently high force by means of the spring 103, the spectrometer 5 lies firmly against the window 7, so that its position in relation to the window 7 and, above all, in relation to the measuring volume adjacent to the window 7 is precisely defined. This also compensates for possible manufacturing tolerances in a screw connection, or is no longer relevant.
- the coupling device 10 is designed such that the contact pressure of the stop surface 51 on the window 7 when the spectrometer 5 is coupled to the holder 3 is in a range from 10 N to 4 kN, preferably in the range from 20 N, particularly preferably in the range from 50 N to 2 kN. These limits apply in particular when the contact pressure is applied via the stop surface 51 is transferred to the transparent window element 74. If the stop surface is supported
- the coupling device 10 is designed such that the product of the contact force of the stop surface 51 on the window 7 and the diameter of the window element 74 does not exceed an amount of 40 kN x mm. Preferably, however, this product is at least 0.1 kN x mm. Preferably, the product lies in a range between these values.
- the connecting element 110 can be designed in two parts, namely with a further sleeve element 102 in addition to the threaded sleeve 101.
- the threaded sleeve 101 forms an outer frame and the sleeve element 102 an inner body.
- the sleeve element 102 surrounds a shaft 53 of the spectrometer 5, as shown in Figs. 2 and 3.
- the spring 103 acts on this sleeve element 102.
- the spring force of the spring 103 is transferred via the sleeve element 102 to the support surface 52 on the spectrometer 5.
- the threaded sleeve 101 has an opening 107 facing away from the holder 3 or to the rear with respect to the window 7, through which the sleeve element 102 emerges after the stop surface 51 has rested on the window 7 upon further rotation of the threaded sleeve 101. This is caused by the fact that the spectrometer 5 can no longer be moved axially towards the window 7 after resting on the window 7, so that the sleeve element 102 due to the rest on the support surface
- a marking 112 can be provided on the sleeve element 102.
- the marking can be a groove. The axial position of the marking 112 can then be selected such that it indicates the intended end position of the screw connection and thus the correct assembly and positioning of the spectrometer 5 on the holder 3 by emerging from the opening 107 or becoming visible.
- an alternative or additional embodiment provides that the coupling device 10 has corresponding stop surfaces 108, 109 on the threaded sleeve 101 and the holder 3, which limit the screw depth of the threaded sleeve 101 on the holder 3.
- a stop surface can be formed by the front surface of the channel in the holder 3, into which the spectrometer 5 is inserted.
- the stop surface on the threaded sleeve 101 is formed in the example shown by an inwardly projecting annular projection.
- the holder 3 serves to create optical access to a measuring volume in bioprocess analysis.
- the holder is attached to a bioreactor for this purpose. Details of holders and bioreactors provided with holders are known from DE 10 2018 108 325 B4, which is also made the subject of the present disclosure in its entirety with regard to details of bioreactors and the connection of the holder to the bioreactor. In this publication, the holder is referred to as a sensor holder. Another use of a spectrometric device 1 is measurements on flow cells. Flow cells are used in bioprocess engineering for process control and analysis of flowing media.
- a bioprocessing device which has a spectrometric device 1 for bioprocess analysis, wherein the window 7 of the holder 3 of this device is connected to a sterile, sealed measuring volume of the bioprocessing Device so that the spectrometer 5 can detect radiation from the measuring volume through the window 7.
- the bioprocessing device can be a bioreactor or a flow cell, or can comprise a bioreactor or a flow cell.
- Fig. 4 shows an embodiment of a holder 3 in a partially cut-away perspective view.
- the holder 3 comprises a plastic body 30 in which a window 7 is sealed, for example melted or glued in.
- the plastic body 30 has, in a preferred embodiment, a flange 31 framing the window 7, to which the bag can be fastened, in particular firmly connected by welding.
- the window 7 comprises a metallic frame 70.
- the metallic frame 70 has an opening 71.
- This opening 71 is closed by a transparent window element 74.
- the transparent window element 74 is inserted into the opening 71 as shown.
- a glass solder 76 it is generally preferred to use a glass solder 76.
- the glass solder 76 can be used to achieve pressure glazing, in which compression forces are generated by the glazing, which hold the window element 74 firmly pressed into the opening 71.
- a glass element as the window element 74, which is connected directly, for example by melting, to the metallic frame 70, so that a connection with a glass solder 76 is not necessary.
- a monocrystalline material such as a monocrystal of one of the materials aluminum oxide, yttrium oxide, zirconium oxide, is used as the transparent window element 74.
- material combinations can also be used, such as ZrCh stabilized with yttrium.
- Such monocrystalline materials prove to be advantageous in particular in connection with Raman measurements, since here the monocrystalline material only has a slight influence on the measurement.
- the mutual connecting surface of the plastic body with the metal frame 70 is as large as possible. At the same time, however, as little surface area of the metal frame 7 as possible should be visible in the direction of the measuring volume. This is advantageous in order to cause as little shadowing as possible during sterilization with ionizing radiation. For this reason, it is generally preferred, without limitation to the exemplary embodiments shown, if the frame 70 has a shaft 77 which extends in the axial direction and which is connected to the plastic body 30 on its outer surface, as also shown in Fig. 4.
- the metallic frame 70 facing the measuring volume is desirable, in a further embodiment implemented in the example shown, this generally has, without limitation to the example shown, a flange 78 that projects inward into the opening 71. This can in particular form a shoulder inside the metallic frame 70, on which the spectrometer 5 then rests with its stop surface 51.
- the stop surface 51 rests against the metallic frame 70 of the window 7, or is pressed there.
- the stop surface 51 can also be pressed against the transparent window element 74. Under certain circumstances, however, high forces can be transmitted to the window element 74 by mechanical impact on the spectrometer 5, which should be avoided in particular with brittle-hard materials.
- the flange 78 also provides increased mechanical stability in the radial direction, which is advantageous when the window element 74 is held in the opening 71 in the form of a pressure glazing.
- the metallic frame 70 and in particular its flange 78 can serve as a counterpart for magnets arranged in the head 50 of the spectrometer 5 in variants in which the force for pressing the stop surface 51 is provided entirely or partially using magnets.
- the inside of the shaft 77 of the metallic frame 70 can also serve as a counterpart for magnets arranged in the head 50 of the spectrometer 5 in particular in variants in which the magnets are used in combination with the spring 103.
- Head 50 of the spectrometer 5 serve as magnets, in which case the magnets are particularly suitable for a first alignment and fixation of the head 50 within the shaft 77. In this case, the magnets can be arranged on a shaft of the head 50.
- the metallic frame 70 is manufactured from a magnetic metal. If the metallic frame 70 is manufactured from a steel, ferritic or martensitic steels are preferred.
- the transparent window element 74 and optionally a solder glass are inserted into the metallic frame 70.
- the solder glass and optionally the material of the transparent element are melted to the metallic frame by heat treatment.
- the thermal expansion coefficient of the metallic frame is also selected to be greater than the thermal expansion coefficient of the transparent element and optionally the solder glass. The difference is preferably at least 3 ppm/K.
- a holder 3 for a spectrometric device 1 is provided with at least one, preferably several different adapters 33, the plastic body 30 of which can be connected to the or one of the different adapters 33 by means of a locking connection 36, wherein the adapter or adapters 33 each have a part of the coupling device 10 for coupling a spectrometer 5, wherein the locking connection 36 locks the adapter 33 at least in the axial direction, i.e. along the optical axis of the holder 3.
- a force can be exerted in the axial direction via the coupling device 10 on a spectrometer 5 inserted into the holder 3 and coupled, and the spectrometer 5 can thus be pressed against the window 7.
- Various adapters allow adaptation to the respective requirements of different spectrometers or their coupling components, whereby the position, in particular the depth of the focal point in the medium to be examined is always reproducibly defined by the mechanical contact between a part of the spectrometer and the window 7.
- the adapter 33 has, as in the examples of Fig. 2 and Fig. 3, a thread 104 for screwing with a threaded sleeve 101, as well as a stop surface 108 for limiting the screwing depth.
- the locking mechanism, or the locking connection 36 can only be seen partially in Fig. 4.
- the locking mechanism 36 and other possible adapters are explained in more detail below with reference to Figures 5 to 7.
- Fig. 4a and 4b show a further embodiment of the spectrometric device 1 in which the screw connection of the connecting element 110 to the holder 3 is designed as a double helix thread, in contrast to the embodiment described with reference to Figs. 1 to 3.
- Fig. 4a shows the connecting element 110 and the holder 3 partially transparent, so that the shape of an internal thread on the connecting element 110 and an external thread on the holder 3 can be seen better.
- Fig. 4b shows the connecting element 110 in perspective, so that the shape of the internal thread can be seen particularly well.
- the connecting element 110 has an internal thread which is formed on the inside of the threaded sleeve 101 in the form of projections which run along two helix lines 121, 122 or screw lines. Both helix lines 121, 122 have the same pitch but are rotated by 180° relative to each other. This ensures that the beginnings 140 of the helix lines 121, 122 are at the same height with respect to the axis of the threaded sleeve 101.
- each of the two helix lines 121, 122 covers a maximum of half a turn or 180°. This ensures that no undercuts occur within the threaded sleeve 101 and the double helix structure can be easily manufactured. Preferably, however, more than a 160° turn is covered by each of the two helix lines 121, 122, so that when engaging with a counterpart for the double helix thread, the largest possible contact surface is provided.
- the counterpart of the internal thread formed on the connecting element 110 is located on the outside of the plastic body 30 of the holder 3.
- an external thread is formed, which is formed by projections that run along two helix lines 131, 132 or screw lines.
- Both helix lines 131, 132 have the same pitch, but are rotated by 180° with respect to each other. This ensures that the beginnings 140 of the helix lines 131, 132 are at the same height with respect to the axis of the plastic body 30.
- the double helix screw connection resulting from this arrangement is particularly suitable for enabling reliable screwing even with comparatively large manufacturing tolerances of plastic components such as the bracket 3.
- the connecting element 110 is made of a metal such as stainless steel and the bracket 3 is made of a plastic such as polyethylene (PE)
- PE polyethylene
- the internal thread with the double helix 121, 122 of the connecting element 110 does not run on the projections of one of the helix lines 131, 132 of the holder 3, but runs in the space between the threads defined by the helix lines 131, 132.
- one of the helix lines 131 represents a lower guide and the other helix line 132 represents the upper guide for the double helix internal thread of the connecting element 110.
- the starting point 140 of the two helix lines 121, 122 and 131, 132 is exactly opposite or offset by 180°.
- both parts are evenly on each other and are both aligned along a common axis. This prevents the internal thread of the connecting element 110 from jamming on the external thread of the holder 3, as is the case with standard threads with only one thread entry.
- the increased contact surface of the thread components compensates for the lower strength of the plastic of the holder 3 compared to the metal of the connecting element 110.
- the double helix thread described here as an example for the connection between the connecting element 110 and the holder 3 can also be combined with other embodiments of the spectrometric device.
- Fig. 5 shows a plastic part 30 with window 7, as well as two adaptors 33, 34 that can be coupled.
- Each of the adaptors 33, 34 in conjunction with the plastic part serving as the base element, results in a differently designed holder 3, whereby the various holders 3 differ in terms of the coupling mechanism for the spectrometer 5, or the coupling device 10.
- the adaptor 33 is equipped with a thread 104, so that when this adaptor 33 is locked to the plastic body 30, a holder 3 is obtained as shown in Fig. 2 to Fig. 4.
- the holder 3, or its plastic part 30 preferably has a shaft 37.
- the shaft 77 of the window 7 can then also be fastened in this shaft 37, as already shown in Fig. 4.
- the locking connection 36 comprises locking lugs 38 on one of the parts, plastic body 30 and adapter 33, 34, and on the other of the parts corresponding grooves 39 and receptacles 40 for the locking lugs 38, wherein the grooves 39 and receptacles 40 alternate circumferentially and wherein the grooves 39 extend in the axial direction so that the locking lugs 38 can be pushed into the grooves 39 in the axial direction up to stops in the grooves 39, and wherein the two parts, plastic body 30 and adapter 33, 34, can be locked together by rotating the plastic body 31 and adapter 33, 34 against each other when the locking lugs 38 are pushed in up to the stops 390 of the grooves 39, so that the locking lugs 38 are moved from the grooves 39 into the receptacles 40 and lock into the receptacles 40.
- the locking lugs 38 each have sliding surfaces 380 arranged obliquely with respect to the tangential direction on the respective part.
- the parts plastic body 30 and adapter 33 or 34 can then be rotated more easily relative to one another in the direction in which the sliding surface 380 slides over the edge of the groove 39.
- Fig. 6 shows the holder 3 in a perspective, partially cutaway view with the adapter 34 attached before the locking connection 36 is locked.
- the section here runs perpendicular to the optical axis through the adapter 34 and the shaft 37 of the plastic body 31.
- the shaft 77 of the window 7, which is connected to the shaft 37 of the plastic body 31, is also visible in the section as a tubular, preferably cylindrical element.
- the profiles of the locking lugs 38 with sliding surfaces 380, the grooves 39 and the receptacles 40 can be clearly seen in the sectional view. Before locking, the locking lugs 38 are still in the grooves 39 as shown.
- the adapter 34 In order to move the locking lugs 38 into the receptacles 40 and thus lock them, the adapter 34 is rotated clockwise in the configuration shown so that the sliding surfaces 380 can slide over the edges of the grooves 39 and finally can snap into the receptacles 40, which are preferably shaped complementarily to the locking lugs 38 as shown, and lock into place.
- This state with the adapter 34 fully assembled is shown in Fig. 7.
- the locking lugs 38 are arranged on the plastic body 30 and the grooves 39 and receptacles 40 on the adapter 33, 34.
- a further embodiment of a spectrometric device which also has a coupling device 10, with which the spectrometer 5 and the holder 3 can be detachably coupled to one another in such a way that in the coupled state of the spectrometer 5 and the holder 3, the stop surface 51 and the window 7 are pressed against each other with a limited force.
- This embodiment is based on the fact that a flange 12, 13 is provided on the spectrometer 5 and the holder 3, wherein the two flanges 12, 13 are clamped together by closing a clamp 115 for coupling, wherein the flanges 12, 13 and the clamp 115 are designed such that a gap 15 remains between the two flanges 12, 13 when the clamp 115 is fully closed.
- Fig. 8 shows a part of the spectrometer 5 in this embodiment in a partially cut-away view.
- the spectrometer 5 preferably has a housing 54 on which a head 50 with a shaft 53 for coupling to the holder 3 is arranged.
- a spectrometer 5 with a free-beam region 17, as in the example shown.
- free-beam optics in particular allow sensitive measurements and a very compact design of the spectrometer 5, in particular for Raman measurements.
- a lens 16 can be provided in a preferred embodiment, which can be arranged in particular in the head 50, or here in the shaft 53.
- free-beam optics are understood to mean optics in which the radiation is not guided continuously through solid media, such as optical fibers, but can spread freely, typically guided by optical elements such as lenses in an evacuated or gas-filled space. It is important here that the coupling and/or decoupling of the radiation in the head of the spectrometer can take place using free-beam optics.
- a lens can be present in the free-beam optics, whereby the lens can also rest against the window 7 if necessary. In the latter case, the free-beam optics are arranged behind the lens as seen from the measuring volume.
- the stop surface 51 is realized by the front side of the hollow shaft 53.
- the stop surface 51, with which the spectrometer 5 is aligned to the window 7 of the holder 3, can therefore be very small and is In the example shown, this is only given by a line-like area on the edge of the head 5 of the spectrometer 5.
- a circumferential flange 13 is provided on the shaft, which serves to couple the spectrometer 5 and the holder 3, as will be explained in more detail in the following figures.
- Fig. 9 shows a suitable holder 3 for coupling the spectrometer 5.
- the holder 3 of this example is constructed similarly to the examples explained above in terms of the plastic body 30 and the window 7. However, instead of a thread as in the example in Fig. 4, a flange 12 is provided.
- the flange 12 can be designed as an adapter and, for example, as explained with reference to Fig. 5, can be connected to the plastic body 30 by means of a latch 36.
- the example shown corresponds to a holder 3 according to Fig. 5 with a coupled adapter 34, which can therefore have the shape of the flange 12 shown here.
- At least one of the flanges 12, 13 has an inclined surface 14.
- Inclined surfaces 14 are preferably provided on both flanges 12, 13.
- the one or both inclined surfaces 14 are arranged on the side of the flange 12, 13 opposite the coupling side for coupling with the other flange 13, 12.
- the one or more inclined surfaces 14 can in particular be conically shaped surfaces that run around the flange 12, 13.
- the inclined surfaces 14 serve to easily redirect a force exerted radially by the clamp into an axially acting force when a clamp is closed, which can then be used to press the stop surface 51 of the spectrometer 5 against the window 7.
- a circumferential groove 18 can be provided on one of the flanges 12, 13 and a corresponding spring can be provided on the other flange 13, 12, which engages in the groove 18 when coupled together. It is also conceivable to additionally or alternatively arrange magnets that make it easier to align and fix the spectrometer 5 to the holder 3. For example, one or more magnets can be provided on the spectrometer 5, in particular on its Head 50, and interact with magnetic counterparts on the holder 3.
- Fig. 10 shows the spectrometric device 1 assembled by means of the coupling device 10.
- the spectrometer 5 and the holder 3 are clamped together at their flanges 12, 13 by means of a clamp 115.
- the clamp 115 is particularly preferably designed as a radially compressing clamp 116.
- the clamp 115 or clamp 116 can have inclined surfaces 140 corresponding to the inclined surfaces 14. If these inclined surfaces 140 are guided or pivoted radially inwards when the clamp 116 is tightened, they come into contact with the inclined surface or surfaces 14 on the flanges 12, 13. Generally by tightening the clamp, or more specifically by tightening the clamp, the flanges 12, 13 are then pressed against one another.
- the flange 12 on the holder 3 thus has the function of a disc spring to a certain extent. If, on the other hand, the two flanges 12, 13 were to come into contact, the contact pressure generated by the clamp would be absorbed by the two flanges 12, 13 alone. A defined contact pressure from the stop surface 51 to the window 7 would then no longer be present.
- the coupling device 10 of this embodiment can be constructed essentially like a so-called Tri-Clamp connection, but with a gap instead of a seal between the flanges 12, 13.
- the head 50 of the spectrometer 5 comprises a shaft 53.
- a shaft 37 is also provided on the holder 3, the coupling device 10 then being arranged between the housing 54 and the window 7.
- the coupling device 10 thus also increases the distance between the housing 54 of the spectrometer and the actual measuring volume, such as the bag of a bioreactor.
- the housing 54 of the spectrometer 5 there may be little space available on the system. It would therefore be desirable for a further embodiment to keep the distance from the housing 54 of the spectrometer 5 to the transparent window element 74 as small as possible.
- the coupling device preferably the entire coupling device 10 are arranged within the housing 54 of the spectrometer 5 when the spectrometer 5 and holder 3 are coupled together. This feature is also independent of whether or not a defined or limited contact force is exerted on the window 7 by the coupling device 10.
- the part of the housing 54 of the spectrometer 5 that interacts with the coupling device 10 can in particular also be provided in the form of an adapter plate. This is particularly advantageous for retrofitting existing spectrometer housings for use with the spectrometric device 1 or for adapting basic shapes of a housing to different application purposes.
- a spectrometric device 1 is therefore also provided for spectroscopic measurement on sterile, dense measuring volumes, in particular for bioprocess analysis, wherein the device 1 has a holder 3 and a spectrometer 5 with a housing 54 that can be repeatedly coupled and decoupled from the holder 3, wherein the holder 3 comprises a plastic body 30 and a window 7 that is sealingly attached to the plastic body 30 and which comprises a metallic frame 70 and a window element 74 that is transparent to the radiation to be detected by the spectrometer 5 and sealingly closes an opening 71 of the frame 70, wherein the spectrometer 5 has a stop surface 51 that can be brought into contact with the window 7 for coupling the spectrometer 5 and the holder 3, and wherein the spectrometric device 1 comprises a coupling device 10 with which the spectrometer 5 and the Holder 3 can be detachably coupled to one another, wherein the coupling device 10 is designed such that in the coupled state of spectrometer 5 and
- the coupling device 10 includes all elements which produce the fixed coupling between the holder 3 and the spectrometer 5. Based on the embodiment of Figs. 2 and 3, the thread 104 of the coupling device 10 on the holder 3 would therefore be assigned, regardless of whether the thread 104 is arranged on an adapter or is made in one piece with the plastic body.
- Fig. 11 shows a holder 3 in plan view, seen in the plug-on direction of the spectrometer 5.
- the coupling device 10 comprises at least one, preferably at least two radially outwardly extending wings 42 on the plastic body 30 of the holder 3.
- the wings 42 are preferably also made of plastic. These plastic wings can be formed as one piece with the plastic body 30, or connected to the plastic body 30 with a suitable adapter, preferably locked in place, as was described, for example, in the embodiments of Fig. 4 to Fig. 7. In the illustration in Fig. 10, it cannot yet be seen that the wings 42 have two opposite sides to which the spectrometer can be anchored so that it can be fixed to the holder 3 in the axial direction.
- a spectrometer 5 with a suitable holder 44 for the holder 3 according to Fig. 11 is shown in Fig. 12.
- the holder 44 surrounds an opening 55 for coupling in or out radiation for the spectrometric measurement.
- the holder 44 also comprises an opening 45 into which the wings 42 can be inserted, or with which the housing 54 of the spectrometer 5 can be put over the wings 42 and the wings 42 can be inserted into the receptacle 44.
- Fig. 13 shows the holder 3 and the housing 54 with the receptacle 44 in comparison before inserting the holder 3 into the receptacle 44, or vice versa before placing the housing 54 on the holder 3.
- the two opposite sides 420, 422 of the wings 42 can be seen.
- the side 422 points in the direction of the window element, or in the direction of the measuring volume, while the opposite side 420 is directed towards the spectrometer 5.
- the holder 3 can have a nozzle 46 which is inserted into the opening 55 when the spectrometer 5 is placed on the holder 3.
- the optics of the spectrometer 5 can preferably be designed such that the radiation propagates as a free jet within the nozzle 46 and up to the window element.
- the housing opening 45 can have a shape adapted to the wings 42 of the holder 3. In this way, it can be ensured that the spectrometer 5 is placed in a predetermined orientation.
- the receptacle 44 has slots or slot-shaped gaps 43 corresponding to the wings 42, into which the wings 42 can be screwed in order to lock the spectrometer 5 to the holder 3.
- the holder 3 has at least one, preferably at least two wings 42, which are oriented outwards in the radial direction of the holder, and wherein the spectrometer 5 has a receptacle 44, preferably arranged on or in the housing 54, with an opening 45, as well as slot-shaped intermediate spaces 43 corresponding to the wings 42, which are located behind or below the opening 45, in particular when looking at the housing 54 from the outside, wherein the wings 42, the slot-shaped intermediate spaces 43 and the opening 45 are arranged in such a way that after the spectrometer 5 has been placed on the holder and the wings 42 have been inserted into the opening 45 of the receptacle 44, the wings
- the receptacle 44 is not constructed symmetrically, unlike the arrangement of the wings 42 on the holder 3.
- at least one locking surface 47 can be present on the receptacle 44, which, after the spectrometer 5 has been placed on the holder 3, only allows mutual rotation to fix the spectrometer 5 on the holder 3 in a predetermined direction of rotation, or that a certain direction of rotation is specified.
- the design prevents an incorrect direction of rotation and defines the angle of rotation (preferably 90°). This enables easy assembly and secure fixation.
- the thickness of the wings 42 is oversized compared to the height of the slot-shaped spaces 43.
- the oversize is preferably in a range of 50 to 150 pm. Due to the ductility of the wing-like mounting elements, or wings 42, they squeeze themselves into the slot-shaped spaces in a self-retaining manner.
- the oversize can be set up in such a way that assembly can be carried out with a rotary movement with a torsional force of between 0.2 and 0.8 Nm.
- the receptacle 44 on the spectrometer 5 is particularly preferably made of metal. This enables the spectrometer 5 to be positioned precisely relative to the holder 3, even if no pressing of a metallic stop surface 51 against a window 7 is provided. This is due, among other things, to the fact that the wings 42 provide a large-area locking in the slot-shaped gaps 43, which can average out inaccuracies.
- a spectrometric device 1 for spectroscopic measurement on sterile, sealed measuring volumes, in particular for bioprocess analysis is therefore provided according to another aspect of this disclosure, wherein the device 1 has a holder 3 and a spectrometer 5 that can be repeatedly coupled and uncoupled from the holder 3, wherein the holder 3 has a plastic body 30 and a fastened window 7, which comprises a metallic frame 70 and a window element 74 which is transparent to the radiation to be detected by the spectrometer 5 and which seals off an opening 71 of the frame 70, and wherein the spectrometer 5 has a metallic receptacle 44 on a housing 54 of the spectrometer 5, wherein the holder 3 has radially outwardly oriented wings 42 as holding elements and the receptacle 44 has an opening 45 for inserting the wings 3 and slot-shaped intermediate spaces 43 which are arranged and designed such that after inserting the wings 42 into the receptacle 44, the wings 42 can be rotated into the
- a stop surface 51 of a metallic head of the spectrometer 5 to be coupled to the holder can be pressed against a component of the window 7 with a limited force.
- High axial forces can already be absorbed here by the wings 42 locked in the slot-shaped gaps.
- An elastic deformation, which defines and limits the contact force, can be provided in this embodiment, for example in that a certain deformation of the plastic body 30 must be applied under the action of force in order to completely insert the holder 44 until the wings 42 are in an axial position that allows it to be accommodated in slot-shaped gaps 43.
- Fig. 14 shows the holder 3 and the spectrometer 5 in the joined position before locking, i.e. before rotation.
- the stop surface 51 on a metal head which is preferably present, and the window are not shown.
- the starting position for the fixing rotation is defined by the locking surface 47 on a projection protruding into the receptacle 44. This determines the direction of rotation of the spectrometer 5 and is indicated by an arrow.
- the spectrometer 5 is rotated while the holder 3 is held in place, because the holder 3 is, for example, firmly welded to a bag of a bioreactor.
- a further locking surface 48 which limits the rotation.
- this further locking surface 48 is attached to the same projection.
- such locking surfaces 47, 48 are provided for each wing 42, in the example shown, therefore provided twice. If the spectrometer 5 is rotated until the wings 42 stop against the locking surfaces 48, the spectrometer 5 is then not only fixed in its position in the axial direction, but also in its angular orientation.
- Fig. 15 shows the spectrometer 5 and the holder 3 in the locked position.
- the visible wing 42 is now rotated by 90° in the holder 44 and rests against the locking surface 48.
- This figure also shows a lens, which is missing in Fig. 14, in a metal head 50 which is supported on the shaft 77 of the window 7.
- the shaft 77 simultaneously forms the nozzle 46 protruding from the holder 3 or forms part of it.
- Fig. 16 shows a bioprocessing device 60 with a holder for mounting a spectrometer 5.
- the bioprocessing device 60 of this embodiment is a bioreactor 61.
- This comprises a container 61 in the form of a plastic bag 62, in which a biological reaction medium, such as a nutrient solution with microorganisms, is located.
- the container volume within the plastic bag 62 forms the measuring volume 2 here.
- a plastic bag 63 as the container 62, a single-use application or a one-time use of a bag is typically provided.
- the bioreactor 61 can have a support container 64 to stabilize the plastic bag 63.
- a holder 3 according to this disclosure is welded to the plastic bag 63.
- the holder 3 with the window 7 for coupling radiation into and out of the measuring volume 2 can be made accessible via an opening 65 in the support container 64 so that a spectrometer 5 can be attached and can detect radiation from the measuring volume 2 through the window 7.
- the spectrometer 5 is equipped in a preferred embodiment with a free-beam optics 66.
- a free-beam optics 66 By avoiding losses of optical fibers and fiber couplers in the optical path, particularly In a compact design, a significantly lower laser power is required for comparable sensitivity compared to standard systems. Due to the lower laser power, in-situ concentration measurement results in a lower energy input in the area of the focal depth in the medium. This avoids damage to even thermolabile analytes, such as biogenic macromolecules.
- the radiation to be detected can be guided as a free beam from the transparent window element 74 to a detector of the spectrometer 5.
- this includes the radiation being directed and/or focused on this optical path by optical elements such as lenses, prisms or deflecting mirrors.
- free beam areas are present adjacent to the optical element(s).
- Fig. 17 shows an embodiment of a spectrometric device 1 with such a spectrometer 5 in a schematic section.
- the compact structure as shown by way of example in Fig. 17, comprises the wall of the bioreactor bag 63, the holder 3 connected to it and the spectrometer 5.
- the spectrometer 5 is designed as a Raman spectrometer and contains the focusing lens 16, a beam splitter 82, the excitation source in the form of a laser diode 80 and the spectrometer detector 81.
- the free beam areas 17 between the spectrometer detector 81 and the transparent window element 74 are shown in Fig. 17.
- a spring 103 as in the embodiments of Figs. 1 to 3, can also be provided in a coupling device 10 according to Figs. 8 to 10 or Figs. 11 to 15 to limit the contact force.
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- Biochemistry (AREA)
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- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023106076.7A DE102023106076B4 (de) | 2023-03-10 | 2023-03-10 | Vorrichtung für spektroskopische Messungen an steril dichten Systemen |
| PCT/EP2024/055812 WO2024188745A1 (de) | 2023-03-10 | 2024-03-06 | Vorrichtung für spektroskopische messungen an bioreaktoren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4677344A1 true EP4677344A1 (de) | 2026-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24709729.8A Pending EP4677344A1 (de) | 2023-03-10 | 2024-03-06 | Vorrichtung für spektroskopische messungen an bioreaktoren |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4677344A1 (de) |
| JP (1) | JP2026509843A (de) |
| CN (1) | CN120813828A (de) |
| DE (1) | DE102023106076B4 (de) |
| WO (1) | WO2024188745A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4361600B1 (de) | 2022-10-26 | 2024-08-28 | Exner & Tottewitz Besitz GBR | Sensorpositioniervorrichtung und sensor |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE58900841D1 (de) | 1988-01-14 | 1992-04-02 | Ciba Geigy Ag | Mikrodurchflusszelle. |
| DE60137599D1 (de) | 2000-03-10 | 2009-03-19 | Textron Systems Corp | Optische sonden und verfahren zur spektralanalyse |
| US8008065B2 (en) * | 2006-08-02 | 2011-08-30 | Finesse Solutions, Llc. | Disposable bioreactor vessel port |
| EP2397838B1 (de) * | 2010-06-15 | 2018-01-17 | Axetris AG | Gassensor zur Messung von Feuchtigkeit und Kohlendioxid-Konzentration |
| DE102011101107B4 (de) | 2011-05-10 | 2013-08-14 | Sartorius Stedim Biotech Gmbh | Einweg-Sensorkopf und Einwegbehälter |
| US20130145818A1 (en) * | 2011-12-09 | 2013-06-13 | Mettler-Toledo Ag | Sensor unit utilizing a clamping mechanism |
| US10041896B2 (en) | 2013-12-06 | 2018-08-07 | Pendo TECH | Sensor fitting for biotech process bag |
| TW201602547A (zh) | 2014-03-17 | 2016-01-16 | 恩特葛瑞斯 捷特隆解決方案公司 | 可棄式液體化學感測器系統 |
| DE102018108325B4 (de) * | 2018-04-09 | 2020-07-09 | Schott Ag | Sensoraufnahme für einen Bioreaktor sowie Bioreaktor mit Sensoraufnahme und Verfahren zur Vermehrung oder Kultivierung biologischen Materials |
| CN109682791A (zh) | 2019-01-25 | 2019-04-26 | 奥谱天成(厦门)科技有限公司 | 一种基于光空间自由传输的无光纤手持拉曼光谱仪 |
| DE102019115147C5 (de) | 2019-06-05 | 2024-09-05 | Schott Ag | Biokompatibles Verbundelement und Verfahren zur Herstellung eines biokompatiblen Verbundelements |
-
2023
- 2023-03-10 DE DE102023106076.7A patent/DE102023106076B4/de active Active
-
2024
- 2024-03-06 CN CN202480018138.6A patent/CN120813828A/zh active Pending
- 2024-03-06 EP EP24709729.8A patent/EP4677344A1/de active Pending
- 2024-03-06 JP JP2025552367A patent/JP2026509843A/ja active Pending
- 2024-03-06 WO PCT/EP2024/055812 patent/WO2024188745A1/de not_active Ceased
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| Publication number | Publication date |
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| DE102023106076B4 (de) | 2024-11-07 |
| DE102023106076A1 (de) | 2024-09-12 |
| WO2024188745A1 (de) | 2024-09-19 |
| JP2026509843A (ja) | 2026-03-25 |
| CN120813828A (zh) | 2025-10-17 |
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