WO2024256431A1 - Bikarbonat-kartusche als folienschlauch - Google Patents
Bikarbonat-kartusche als folienschlauch Download PDFInfo
- Publication number
- WO2024256431A1 WO2024256431A1 PCT/EP2024/066161 EP2024066161W WO2024256431A1 WO 2024256431 A1 WO2024256431 A1 WO 2024256431A1 EP 2024066161 W EP2024066161 W EP 2024066161W WO 2024256431 A1 WO2024256431 A1 WO 2024256431A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bicarbonate cartridge
- container body
- connector
- section
- holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1654—Dialysates therefor
- A61M1/1656—Apparatus for preparing dialysates
- A61M1/1668—Details of containers
- A61M1/167—Flexible packaging for solid concentrates
-
- 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
-
- 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
- A61J1/16—Holders for containers
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
- A61M1/1654—Dialysates therefor
- A61M1/1656—Apparatus for preparing dialysates
- A61M1/1666—Apparatus for preparing dialysates by dissolving solids
Definitions
- the present disclosure relates to a medical bicarbonate cartridge for dialysis applications, in particular for hemodialysis applications, and a system comprising the medical bicarbonate cartridge and a holder.
- Bicarbonate or a bicarbonate solution is an indispensable part of today's hemodialysis applications.
- Bicarbonate is used in hemodialysis applications as a buffer substance to balance the difference between acids and bases, since bicarbonate, unlike other buffer substances, has little effect on a patient's cardiovascular system.
- Bicarbonate cartridges filled with powdered/granulated bicarbonate are used for this purpose, into which water is introduced, which is enriched with bicarbonate in the bicarbonate cartridge and then discharged as a bicarbonate solution.
- the current state of the art uses injection-molded cartridge bodies that are filled with the powdered bicarbonate.
- These injection-molded cartridge bodies have the disadvantage that manufacturing errors, for example during a friction welding process or a "body crack" in the cartridge body, can lead to leaks in the cartridge, which can endanger the dialysis process and thus patient safety.
- the injection-molded cartridges are expensive to manufacture and their rigid shape generates a high volume of waste.
- the object of the present disclosure is therefore to eliminate or at least reduce the disadvantages of the prior art.
- the object of the present disclosure is to provide a bicarbonate cartridge which increases patient safety and reduces manufacturing costs and the volume of waste generated.
- the problem is solved by the medical bicarbonate cartridge with a container body, an inlet connector and an outlet connector formed separately from the inlet connector, wherein the container body is designed as a film tube/film body which forms an externally fluid-tight connection between the inlet connector and the outlet connector.
- the medical bicarbonate cartridge contains the container body/cartridge body, which as a film tube has a preferably essentially tubular outer surface that is closed to the outside (fluid-tight).
- the film tube or the outer surface of the container body has a flexible structure.
- the film tube as a whole is flexible.
- the film tube contains a first front opening and a second front opening, which are arranged/formed at opposite ends of the film tube in the longitudinal direction.
- the first front opening is closed by the inlet connector (in the design position initially).
- the second front opening is closed by the outlet connector (in the design position initially).
- the film tube, the inlet connector and the outlet connector form a storage space that is fluid-tight to the outside.
- the core of the invention is therefore that the medical bicarbonate cartridge is designed with a film tube which delimits a flexible storage space which is fluid-tight to the outside and can be flowed through in the longitudinal direction.
- the invention consists in providing two (rigid) plates or closure sections forming the front sides of a hose container/hose cartridge, preferably with a substantially oval and more preferably pointed-oval cross-section, in each of which a through hole is formed, in/on each of which a connection piece or connecting section for an inlet and an outlet is formed/formed/arranged (which extends substantially perpendicular to the respective plate).
- a film tube is provided with a reduced rigidity compared to the plates, which is fixed (glued, welded, etc.) to the opposite long sides of each plate (extending in the oval's longitudinal direction) in a fluid-tight manner (i.e. is completely connected to each plate in a fluid-tight manner) and thus defines a fluid-tight container-cartridge interior (with the exception of the connections).
- a film strip can be arranged/formed in the area of the (tapered) plate ends seen in the oval or plate longitudinal direction, which protrudes over the plates in the plate longitudinal direction and extends between the two plates in the container longitudinal direction.
- two flexible film strips are provided with respect to the plates, which are fixed (glued, welded, etc.) to the opposite long sides of each plate in a fluid-tight manner, such that they each protrude over the two free ends of the plates in the long side direction and thus form a kind of strip-shaped edge (film strip) on both long side ends of each plate, which lie next to each other as an extension of the long sides of the plates and are connected to each other in a fluid-tight manner (glued, welded, etc.).
- the invention consists specifically of the plate-shaped inlet connector and the plate-shaped outlet connector, whereby the geometry of the inlet connector can correspond to the geometry of the outlet connector, and the film tube, which connects the inlet connector and the outlet connector to the outside in a fluid-tight manner with a constant diameter and is materially connected to the inlet connector and the outlet connector.
- a bicarbonate cartridge designed in this way is more break-resistant than a completely rigid cartridge body that is manufactured using an injection molding process.
- the volume of waste can be reduced by around 70% using the bicarbonate cartridge according to the disclosure, since the cartridge body according to the disclosure collapses or is collapsible after use.
- manufacturing and material costs can be saved by designing the cartridge body as a film tube compared to designing the cartridge body as an injection molded part.
- the inlet connector and the outlet connector can each be designed as a connector boat with a connecting section and a closure section and close the container body in a materially bonded manner, preferably by means of welding.
- the inlet connector and the outlet connector can each contain a preferably substantially plate-shaped closure section which closes the first front opening or the second front opening in a flat manner.
- the closure section can be fixed in or on the first or second front opening in a material-locking manner.
- other material-locking connection types such as gluing, are conceivable.
- a connection section can be formed on the inlet connector and the outlet connector, which extends substantially normal to the closure section.
- the inlet connector and the outlet connector can each be designed as a connector which is provided and designed to connect the storage space of the bicarbonate cartridge to a line, a hose or the like.
- the connection section of the inlet connector can be provided and designed to be connected to a water inlet line.
- the connection section of the outlet connector can be provided and designed to be connected to a bicarbonate solution line.
- the inlet connector and the outlet connector in this way, the water can be introduced into the storage space via the inlet connector, a uniform flow through the bicarbonate cartridge and a discharge of the Bicarbonate solution can be achieved via the drain connector.
- the tight connection of the inlet connector or the drain connector with the foil hose can ensure that the bicarbonate cartridge is leak-proof.
- the closure portion may have a pointed oval geometry.
- closure portion of the inlet connector and/or the outlet connector may have a lens shape or an oval shape which tapers to a point at two diametrically opposite end points.
- a sieve section with a sieve can be formed between the connecting section and the closure section.
- both the inlet connector and the outlet connector can be designed with a sieve that separates the storage space from the environment surrounding the bicarbonate cartridge.
- the sieve section or sieve in the inlet connector and in the outlet connector can prevent the bicarbonate from leaving the bicarbonate cartridge in undissolved form (powder form/granulate form). In particular, it can prevent clumped bicarbonate from entering the bicarbonate solution line and endangering patient safety.
- the container body can have at least one holding section, which can be formed, preferably as a film strip, in a longitudinal extension direction of the film tube.
- at least one, preferably at least two, holding sections can be formed on the container body in the form of the film tube.
- the at least one holding section can preferably be formed as a film strip made of a material identical to a material of the film tube.
- the at least one holding section can be formed as part of the film tube.
- the holding section can be formed as a single piece with the container body or the film tube.
- the at least one holding section can extend over a complete length in the longitudinal direction or a complete longitudinal extent of the container body.
- the at least one holding section can have a thicker wall thickness than the container body in the form of the film tube.
- the at least one holding section can have a wall thickness that is essentially twice as thick as the container body, whereby the holding section fulfills a certain support function in relation to the container body.
- the holding sections can particularly preferably be formed diametrically opposite one another on the container body.
- the at least one holding section can be aligned/oriented in the longitudinal direction in alignment with one of the two diametrically opposite end points of the closure section.
- they can each be aligned/oriented in alignment with one of the two diametrically opposite end points of the closure section.
- the bicarbonate cartridge can be securely fixed in a corresponding holding device.
- the holding sections can be provided and designed to be This ensures that the bicarbonate cartridge remains in shape during operation despite the flexible container body and does not buckle or collapse in an uncontrolled manner, which could impair the flow through the bicarbonate cartridge.
- the container body can be made from a polypropylene or polyethylene film.
- the at least one holding section can be made from the polypropylene or polyethylene film.
- the film tube can be designed as a multilayer film.
- the film tube can also be designed as a multilayer film with several, optionally different film layers.
- the multilayer film can be made up of two or three film layers.
- the two or three film layers can be made of different materials.
- the film layers can particularly preferably consist of polypropylene, polyethylene and/or polyamide.
- the multilayer film can be constructed from film (material) in the first sequence polyethylene, polyamide polyethylene or the second sequence polypropylene, polyamide, polyethylene.
- the container body can be transparent at least in sections.
- the container body can be designed with at least one translucent/transparent section.
- the entire container body can be designed to be transparent.
- a content of the bicarbonate cartridge and/or a fill level of the bicarbonate cartridge and/or a manufacturing process of the bicarbonate solution can be optically checked/monitored by an operator or a corresponding optical sensor system.
- the container body of the bicarbonate cartridge can have a cross-section that changes/alters over the longitudinal extent, at least in sections.
- the container body can have a cross-sectional area oriented perpendicular to the longitudinal extension of the container body.
- the longitudinal extension is understood to mean the extension from the inlet connector to the outlet connector.
- the cross-section or the cross-sectional area can change over the longitudinal extension, in particular in terms of its size.
- the cross-sectional area is understood to mean a planar extension of the cross-section of the container body and/or the receiving space of the container body perpendicular to the longitudinal extension.
- Embodiments are also conceivable in which the cross-sectional area changes in a geometry of the cross-sectional area over the longitudinal extent.
- the cross-section may be variable in sections/change in sections.
- the container body can have at least a first section along the longitudinal extension, in which the cross-section changes over the longitudinal extension, and optionally have at least a second section along the longitudinal extension, in which the cross-section is constant over the longitudinal extension.
- the container body can have a first section facing the drain connector, in which the cross section of the container body tapers towards the drain connector, and a second section facing the inlet connector, in which the cross section of the container body is essentially constant.
- the first section can taper, starting from the second section, towards the drain connector, in particular linearly or in a funnel shape.
- the cross-section can be a cross-section that changes linearly over the longitudinal extent of the container body.
- the cross section of the container body can widen and/or taper in a funnel shape at least in sections.
- embodiments are preferred in which the cross section first widens along the longitudinal extent and then, optionally after a section with a constant cross section, tapers again.
- the cross-section may expand at a first rate starting from the inlet connector, then be constant, and then taper again toward the outlet connector at the first rate.
- the container body may expand and taper symmetrically.
- Embodiments are also conceivable in which the cross-section tapers and/or widens in a curved manner, for example parabolically.
- the cross-section can taper, preferably linearly, from the inlet connector to the outlet connector.
- the container body can be funnel-shaped starting from the inlet connector towards the outlet connector.
- a funnel-shaped design of the bicarbonate cartridge ensures that the dissolved bicarbonate is directed to the This significantly reduces undesirable effects such as channeling, which can lead to only partial dissolution of the bicarbonate. Furthermore, this ensures that only minimal amounts of undissolved bicarbonate remain in the bicarbonate cartridge's receiving space at the end of the therapy.
- connection section of the inlet connector and/or the outlet connector can be closed by a tamper-evident closure, preferably in the form of a cap.
- the tamper-evident closure can be formed, for example, by a seal, a tamper-evident ring, a tear-off/break-off geometry or the like.
- the inlet connector and the outlet connector can be formed in one piece, preferably in one piece.
- the inlet connector and the outlet connector can be designed as Luer-Lock connectors.
- At least the inlet connector and/or the outlet connector can each be designed with a check valve to define a flow direction of the bicarbonate cartridge and to prevent desired backflow.
- a cross-sectional area of the storage space parallel to the inlet connector and the outlet connector may correspond to a cross-sectional area of the inlet connector and the outlet connector and should preferably be constant over the entire length of the container body.
- a specific bicarbonate cartridge can contain the inlet connector, the outlet connector and the container body, which contacts the inlet connector and the outlet connector in a materially bonded manner in the front openings of the container body and is designed as a film tube.
- the storage space enclosed by the inlet connector, the outlet connector and the container body can have a cylindrical shape with a pointed oval, preferably constant, cross-sectional area. Both the outlet connector and the inlet connector can have the connecting section facing away from the storage space.
- the object of the present disclosure is achieved by a system comprising the bicarbonate cartridge according to one of the above aspects and a holder/holding device, wherein the holder is provided and designed to fix the medical bicarbonate cartridge in or on a dialysis machine.
- the function of the holder is to create a constant and fixed distance between the inlet and outlet connector in order to connect the flexible container body with the corresponding connection adapters of the dialysis machine.
- the holder of the system is designed to fix the bicarbonate cartridge with the flexible container body in such a way (reversibly) that uncontrolled buckling or collapsing, which could impair the flow through the bicarbonate cartridge, is prevented.
- the holder preferably fixes the bicarbonate cartridge via the at least one holding section optionally formed on the bicarbonate cartridge.
- the bicarbonate cartridge is preferably fixed in the holder in a force-fitting and/or form-fitting manner.
- the holder has an external geometry that enables the bicarbonate cartridge to be fixed in the dialysis machine.
- the holder forms a fastening adapter in order to fix the bicarbonate cartridge according to the disclosure in the dialysis machine and to ensure a defined and rigid distance between the inlet and outlet connector.
- the holder can substantially completely surround the bicarbonate cartridge in a radial direction.
- the holder can completely surround the container body of the bicarbonate cartridge.
- the holder protects the bicarbonate cartridge from being punctured/cut by a pointed/sharp object.
- the holder of the system can also be designed as a one-piece structural element that encloses the bicarbonate cartridge in the form of a rigid bracket or a pair of pliers and holds it in a fixed position.
- the holder of the system can be designed in several parts.
- the holder of the system can be designed to be foldable.
- the holder can in particular contain two shells which are hingedly connected to one another via at least one hinge.
- a receiving space can be formed in the holder which is provided and designed to receive the bicarbonate cartridge.
- the receiving space of the holder can be accessible by opening the holder or folding the two shells towards one another.
- the two shells can be designed essentially symmetrically to one another.
- the two shells forming the holder can form an essentially cuboid-shaped outer geometry in a closed/folded state. In the folded state, the bicarbonate cartridge can be fixed in the holder in a form-fitting and/or force-fitting manner.
- the holder of the system may include at least one quick release fastener.
- at least one quick-release fastener can be designed, preferably on a side of the holder facing away from the at least one hinge, to fix the closed state of the holder reversibly, in particular in a form-fitting manner.
- the quick-release fastener can be designed to connect/clamp the two shells together in such a way that the bicarbonate cartridge is fixed between the shells.
- the receiving space of the holder can have a substantially cylindrical shape with a pointed oval base.
- a geometry of the receiving space can correspond to an (external) geometry of the bicarbonate cartridge.
- the holder of the system can fix the bicarbonate cartridge in such a way that in the fixed state a relative movement of the inlet and outlet connectors to the holder is prevented.
- the holder of the system can include openings that are provided and designed to receive the preferably substantially plate-shaped closure sections of the inlet and outlet connector in a form-fitting and/or force-fitting manner.
- the holder of the system can include alternative openings that are provided and designed to receive the connection sections.
- the preferably substantially plate-shaped closure sections of the inlet and outlet connector and/or the openings of the holder can be designed with a locking geometry that enables the closure sections to be locked in the openings of the holder.
- the holder may include at least one viewing window that allows an operator to visually check/monitor the contents of the bicarbonate cartridge and the bicarbonate solution preparation process.
- the holder can be transparent.
- the holder of the system can be made of plastic and/or a stainless steel sheet and/or a grid material.
- Fig. 1 is a perspective view of a bicarbonate cartridge according to the disclosure
- Fig. 2 is a sectional view of the bicarbonate cartridge according to the disclosure
- Fig. 3 is a perspective view of a holder and bicarbonate cartridge system according to the disclosure.
- Fig. 4 is a sectional view of the disclosed bicarbonate cartridge in a first alternative embodiment
- Fig. 5 is a sectional view of the disclosed bicarbonate cartridge in a second alternative embodiment.
- Fig. 6 is a sectional view of the disclosed bicarbonate cartridge in a third alternative embodiment.
- Fig. 1 shows an embodiment of the bicarbonate cartridge 1 according to the disclosure in a perspective view
- Fig. 2 shows the bicarbonate cartridge 1 according to the disclosure in a sectional view.
- the bicarbonate cartridge 1 contains an inlet connector 3 and an outlet connector 5, each of which is designed as a connector boat, as well as a container body in the form of a film tube 7.
- the film tube 7 represents a fluid-tight connection between the inlet connector 3 and the outlet connector 5 and extends in a longitudinal direction L of the bicarbonate cartridge 1.
- the inlet connector 3, the outlet connector 5 and the film tube 7 delimit a storage space 9 of the bicarbonate cartridge 1.
- the inlet connector 3 closes a first front opening 11 of the film tube 7.
- the outlet connector 5 closes a second front opening 13 of the film tube 7.
- the inlet connector 3 and the outlet connector 5 are constructed identically.
- the inlet connector 3 includes a closure section 15 and a connection section 17.
- the closure section 15 has a substantially pointed oval, flat shape.
- the connection section 17 extends centrally on the closure section 15 substantially perpendicularly, based on the flat extent of the closure section, away from the closure section 15.
- the closure section 15 includes a peripheral connection edge 19.
- the connection edge 19 is integrally connected to the film tube 7. In other words, the film tube 7 is welded to the connection edge 19 in an area of the first front opening 11, so that the first front opening 11 is closed by the closure section 15 of the inlet connector 3.
- the drain connector 5 includes the closure portion 15 and the connection portion 17.
- the closure portion 15 has the essentially pointed oval, flat shape.
- the connecting section 17 extends centrally on the closure section 15 essentially perpendicularly, based on the flat extent of the closure section, away from the closure section 15.
- the closure section 15 contains the peripheral connecting edge 19.
- the connecting edge 19 is integrally connected to the film tube 7. In other words, the film tube 7 is welded to the connecting edge 19 in an area of the second front opening 13, so that the second front opening 13 is closed by the closure section 15 of the drain connector 3.
- the film tube 7 further includes two holding sections in the form of film strips 21.
- the film strips 21 are formed integrally with the film tube 7 and extend over a length of the film tube in the longitudinal direction L.
- the film strips 21 are formed at positions diametrically opposite one another in relation to the film tube 7. Specifically, the film strips 21 are formed in a plane spanned by tips 22 of the closure sections 15, outside the storage space 9.
- the inlet connector 3 and the outlet connector 5 each contain a sieve 23, which is formed in an inlet opening 25 of the inlet connector 3 and in an outlet opening 27 of the outlet connector 5.
- the sieve 23 is a separating element between the storage space 9 and an environment 27 surrounding the bicarbonate cartridge 1.
- the inlet connector 3 and the outlet connector 5 are each closed with a tamper-evident closure in the form of a cap 29.
- the storage space 9 of the bicarbonate cartridge 1 is filled with bicarbonate, preferably in powder form or in granulate form.
- bicarbonate preferably in powder form or in granulate form.
- the tamper-evident closure in the form of the cap 29 is removed from the inlet connector 3 and the outlet connector 5.
- the inlet connector 3 is connected to a water line of a dialysis machine (not shown) in such a way that water can flow through the inlet opening 25 into the storage space 9.
- the water flows through the Storage chamber 9 in the longitudinal direction L and is thereby enriched with bicarbonate.
- a bicarbonate solution is formed from the water with the bicarbonate via the longitudinal direction of the storage chamber.
- the bicarbonate solution leaves the bicarbonate cartridge 1 via the drain opening 27 of the drain connector 5 and flows into a bicarbonate solution line (not shown) of the dialysis machine.
- the sieves 23 retain the powdered bicarbonate in the storage chamber 9 and ensure that only bicarbonate solution leaves the bicarbonate cartridge 1.
- Fig. 3 shows a system comprising the bicarbonate cartridge 1 and a holder 31.
- the holder 31 consists of a first shell 33 and a second shell 35.
- the holder 31 forms a bicarbonate cartridge receiving space 37 between the first shell 33 and the second shell 35, which is intended and designed to receive the bicarbonate cartridge 1.
- the bicarbonate cartridge 1 is shown transparently in Fig. 3.
- the bicarbonate cartridge receiving space 37 has an internal geometry matched to an external geometry of the bicarbonate cartridge 1.
- the first shell 33 and the second shell 36 each have a substantially rectangular half-shell geometry, each with a rectangular base area 39 and a continuous wall 41 which extends at right angles away from the rectangular base area 39.
- Recesses/openings 43 are formed in the continuous wall, which are provided and designed to receive the closure section 15 of the inlet connector 3 or the outlet connector 5.
- first shell 33 and the second shell 35 are shown separately from one another in Fig. 3.
- the first shell 33 and the second shell 35 are hingedly connected to one another by means of hinges 45, which are formed on a long side of the first shell 33 or second shell 35.
- hinges 45 are formed on a long side of the first shell 33 or second shell 35.
- quick-release fasteners 47 are formed to detachably connect the first shell 33 and the second shell 35 to one another or to reversibly close them to the holder 31.
- the closed state not shown
- the film strips 21 of the bicarbonate cartridge 1 are fixed in the holder 31 in a force-fitting manner.
- the film strips 21 are clamped, for example, between the peripheral wall 41 of the first shell 33 and the peripheral wall 41 of the second shell 35.
- the holder 31 has receptacles, for example in the form of hooks or the like, for receiving the holding sections of the bicarbonate cartridge 1.
- the bicarbonate cartridge 1 is arranged in the holder 31 in such a way that the connecting section 15 of the inlet connector 3 or the outlet connector 5 is arranged in an opening in the holder 31 formed by the recesses 43.
- the inlet connector 3 and the outlet connector 5 are fixed in a stationary manner in relation to the holder 31 in the closed state.
- the inlet connector 3 and the outlet connector 5 are preferably fixed in a force-fitting manner in the respective opening formed by the recesses 43.
- the force-fitting connection can take place in particular via the connecting edge 19, which further improves the seal between the film tube 7 and the connecting section 15.
- Embodiments are also conceivable in which the first shell 33 and the second shell 35 are connected to one another exclusively by means of quick-release fasteners 47.
- the hinges 45 are replaced by further quick-release fasteners 47.
- viewing windows 49 are also formed, which enable a visual inspection of the bicarbonate cartridge 1 when the holder 31 is closed.
- Fig. 4 is a sectional view of the bicarbonate cartridge 1 according to the disclosure in a preferred first alternative embodiment.
- the bicarbonate cartridge 1 is designed with a funnel-shaped geometry.
- the film tube 7 has a funnel-shaped configuration.
- a cross-sectional area of the film tube 7 in the longitudinal direction L between the inlet connector 3 and the outlet connector 5 decreases continuously/steadily, preferably linearly.
- the film strip 21 is separated from the storage space 9 by a weld seam running on/in the film tube 7.
- Fig. 5 is a sectional view of the bicarbonate cartridge 1 according to the disclosure in a preferred second alternative embodiment.
- the bicarbonate cartridge 1 is designed in sections with a funnel-shaped geometry.
- the film tube 7 has a funnel-shaped shape in sections.
- the film tube 7 initially has a constant cross-sectional area in the longitudinal direction L between the inlet connector 3 and the outlet connector 5, which then decreases/shrinks in a funnel shape as it continues in the longitudinal direction L in the direction of the outlet connector 5.
- the cross-sectional area of the film tube 7 is monotonically decreasing along the longitudinal direction L, with the cross-sectional area initially being constant and then decreasing linearly towards the outlet connector.
- the film tube 7 or the storage space 9 of the film tube 7 has a funnel-shaped geometry in a section facing the drain connector 5 and a cylindrical, in particular a circular-cylindrical, geometry in a section facing away from the drain connector 5.
- the film strip 21, which is also not part of the storage space 9 in the second alternative embodiment shown in Fig. 5 and is not intended or designed to hold sodium bicarbonate, can, as shown in Fig. 5, optionally remain on the bicarbonate cartridge 1 and function as a holding section or alternatively be severed/cut off in the manufacturing process.
- the film strip 21 is separated from the storage space 9 by a weld seam running on/in the film tube 7.
- Fig. 6 is a sectional view of the bicarbonate cartridge 1 according to the disclosure in a preferred third alternative embodiment.
- the bicarbonate cartridge 1 is designed in sections with two funnel-shaped geometries.
- the bicarbonate cartridge 1 according to the disclosure in the third preferred embodiment is designed in the form of a double funnel-shaped embodiment of the film tube 7.
- the cross-sectional area of the film tube 7 and thus of the storage space 9 initially increases continuously, in particular linearly, along the longitudinal direction L between the inlet connector 3 and the outlet connector 5 until the cross-sectional area changes into a constant, cylindrical region in which the cross-sectional area is constant.
- the cross-sectional area of the film tube then decreases again along the longitudinal direction L towards the outlet connector 5.
- the widening of the cross-sectional area can be symmetrical to the tapering of the cross-sectional area.
- the film strip 21 is separated from the storage space 9 by a weld seam running on/in the film tube 7. list of reference symbols
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- Urology & Nephrology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Pharmacology & Pharmacy (AREA)
- Emergency Medicine (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24732897.4A EP4727614A1 (de) | 2023-06-13 | 2024-06-12 | Bikarbonat-kartusche als folienschlauch |
| CN202480038262.9A CN121311262A (zh) | 2023-06-13 | 2024-06-12 | 作为薄膜软管的碳酸氢盐筒 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023115358.7 | 2023-06-13 | ||
| DE102023115358.7A DE102023115358A1 (de) | 2023-06-13 | 2023-06-13 | Bikarbonat-Kartusche |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024256431A1 true WO2024256431A1 (de) | 2024-12-19 |
Family
ID=91539833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/066161 Ceased WO2024256431A1 (de) | 2023-06-13 | 2024-06-12 | Bikarbonat-kartusche als folienschlauch |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4727614A1 (de) |
| CN (1) | CN121311262A (de) |
| DE (1) | DE102023115358A1 (de) |
| WO (1) | WO2024256431A1 (de) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0665026A2 (de) * | 1993-12-30 | 1995-08-02 | B. Braun Melsungen Ag | Dialysevorrichtung |
| DE19825158C1 (de) * | 1997-07-09 | 1999-04-08 | Fresenius Medical Care De Gmbh | Disposable für eine medizintechnische Vorrichtung zur Durchführung einer Behandlung unter Verwendung einer Flüssigkeit, insbesondere einer Dialysierflüssigkeit |
| WO1999043571A1 (de) * | 1998-02-27 | 1999-09-02 | Boehringer Ingelheim International Gmbh | Behälter für eine medizinische flüssigkeit |
| DE10100549A1 (de) * | 2001-01-08 | 2002-07-18 | Franz Peter Ritter | Salzbehältersystem für Dialysegeräte |
| US20130004593A1 (en) * | 2011-07-01 | 2013-01-03 | Fresenius Medical Care Deutschland Gmbh | Container, use, dialyzer or preparation unit as well as method of manufacturing a concentrate |
| DE102013108082A1 (de) * | 2013-07-29 | 2015-01-29 | B. Braun Avitum Ag | Vorrichtung zum Herstellen einer Lösung, inbesondere in/an einer Dialysemaschine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7837659U1 (de) * | 1978-12-20 | 1979-05-31 | R Linnemann Fa | Kanister fuer sterile Fluessigkeiten |
| EP2537772A1 (de) * | 2011-06-21 | 2012-12-26 | Weibel CDS AG | Vorrichtung zur Aufnahme und Abgabe eines Fluids |
-
2023
- 2023-06-13 DE DE102023115358.7A patent/DE102023115358A1/de active Pending
-
2024
- 2024-06-12 CN CN202480038262.9A patent/CN121311262A/zh active Pending
- 2024-06-12 WO PCT/EP2024/066161 patent/WO2024256431A1/de not_active Ceased
- 2024-06-12 EP EP24732897.4A patent/EP4727614A1/de active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0665026A2 (de) * | 1993-12-30 | 1995-08-02 | B. Braun Melsungen Ag | Dialysevorrichtung |
| DE19825158C1 (de) * | 1997-07-09 | 1999-04-08 | Fresenius Medical Care De Gmbh | Disposable für eine medizintechnische Vorrichtung zur Durchführung einer Behandlung unter Verwendung einer Flüssigkeit, insbesondere einer Dialysierflüssigkeit |
| WO1999043571A1 (de) * | 1998-02-27 | 1999-09-02 | Boehringer Ingelheim International Gmbh | Behälter für eine medizinische flüssigkeit |
| DE10100549A1 (de) * | 2001-01-08 | 2002-07-18 | Franz Peter Ritter | Salzbehältersystem für Dialysegeräte |
| US20130004593A1 (en) * | 2011-07-01 | 2013-01-03 | Fresenius Medical Care Deutschland Gmbh | Container, use, dialyzer or preparation unit as well as method of manufacturing a concentrate |
| DE102013108082A1 (de) * | 2013-07-29 | 2015-01-29 | B. Braun Avitum Ag | Vorrichtung zum Herstellen einer Lösung, inbesondere in/an einer Dialysemaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4727614A1 (de) | 2026-04-22 |
| CN121311262A (zh) | 2026-01-09 |
| DE102023115358A1 (de) | 2024-12-19 |
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