A suspension device and a medical system

Abstract

A suspension device (100) for holding a medical fluid bag, said suspension device comprising: a holder (105) configured for holding the bag; and a hanger mechanism (112) arranged on the holder, wherein the holder is configured to at least partly enclose the bag when the suspension device is hung by the hanger mechanism.

Description

[0001] A SUSPENSION DEVICE AND A MEDICAL SYSTEM

[0002] Technical field

[0003] The present disclosure relates to the field of devices for use in therapeutic treatment such as renal replacement therapy and in particular to handling of bags containing a medical fluid.

[0004] Background

[0005] In certain types of medical therapeutic treatment, various apparatuses are used for handling different types of medical fluids, such as for the purpose of receiving, preparing, mixing, holding, and dispensing such therapeutic fluids. One example is Renal Replacement Therapy (RRT), which is a therapy which at least partly replaces the normal blood-filtering function of the kidneys. RRT is used when the kidneys are not working well, which is known as kidney failure and includes acute kidney injury and chronic kidney disease. RRT involves removal of solutes from the blood of a patient suffering from kidney failure, for example by dialysis. This may include hemodialysis (HD), hemofiltration (HF), hemodiafiltration (HDF), or peritoneal dialysis (PD). Depending on modality, RRT may be performed manually (for PD) or by use of a machine. In RRT, one or more medical fluids, also referred to herein as therapeutic fluids, of specific composition are used for treatment of blood. Examples of such medical fluids include so-called dialysis fluid (in HD and HDF), and replacement fluid (in HF and HDF).

[0006] In various examples, medical fluids may be produced and packaged at a different location than where it is subsequently used. In such scenarios, the medical fluid is oftentimes contained and transported in sterile bags. The sterile bags are connected to a therapeutic apparatus, in which the medical fluid is received and used. Another example relates to machines where the medical fluid is produced online, i.e. at or close to the same time as it is used for treatment, e.g. passed through a dialyzer for treatment of a patient’s blood by diffusion. In yet other examples, a medical fluid generator, such as a mixing device, may be provided in the vicinity of the therapeutic apparatus, wherein the mixing device is configured to produce readymade medical dialysis fluid, which may be filled into bags for use in the therapeutic apparatus In other examples, a medical fluid generator, such as a mixing device, may be provided in the vicinity of the therapeutic apparatus, wherein the mixing device is configured to produce readymade medical dialysis fluid, which may be pumped into bags for use in the therapeutic apparatus.

[0007] CRRT (Continuous Renal Replacement Therapy), by way of example, may be performed using pre-produced sterile dialysis fluid contained in bags. The bags are commonly prefilled by a manufacturer and distributed to a facility for use in conjunction with a CRRT machine, wherein the bags are connected to be drained by the CRRT machine. Such bags are typically 5 liters, but both larger and smaller bags are used. An alternative system setup may comprise a mixing device being located near the CRRT machine, producing dialysis fluid (or other medical fluid) online, wherein the dialysis fluid is supplied to bags which may be connected to the CRRT machine.

[0008] Summary

[0009] It is an overall objective to at least partly overcome various challenges and limitations associated with the use of bags configured to contain a medical, or therapeutic, fluid.

[0010] An aspect of the overall objective is to provide a solution for using less disposable material.

[0011] Another aspect of the overall objective is to provide a solution for using less durable bag material and / or a simpler bag design, for bags configured to contain medical fluids, to reduce production cost and complexity.

[0012] One or more of these objectives, as well as further objectives that may appear from the description below, are at least partly achieved by a device and a method according to the independent claims. Further aspects and embodiments are defined by the dependent claims.

[0013] According to one aspect of the proposed solution, a suspension device for holding a medical fluid bag is provided, wherein said suspension device comprises: a holder configured for holding the bag; and a hanger mechanism arranged on the holder, wherein the holder is configured to at least partly enclose the bag when the suspension device is hung by the hanger mechanism.

[0014] According to a second aspect of the proposed solution, a medical system is provided, comprising: a medical apparatus comprising an input interface configured to connect to a fluid line conduit; a carrier device for carrying a bag containing a medical fluid to be supplied to the input interface; and a suspension device according to the first aspect, configured to be hung by the carrier device.

[0015] According to a third aspect, a method is provided for connecting a medical fluid bag to a medical apparatus for enabling supply of the medical fluid contained in the bag to the medical apparatus, wherein the method comprises: arranging the bag in a holder of a suspension device, wherein the suspension device is hung up such that the bag rests at a bottom of the holder while the holder carries and at least partly encloses the bag; and connecting a fluid line conduit between the bag and the medical apparatus.

[0016] The suspension device allows for improved handling of therapeutic fluids and simplified configuration of disposable bags, at least on account of allowing less durable disposable bags which do not require hanging reinforcements.

[0017] Further objectives, aspects and advantages, as well as features and embodiments, may appear from the following detailed description, from the attached claims as well as from the drawings.

[0018] Brief description of the drawings

[0019] Fig. 1 schematically illustrates a system for handling a medical fluid, which may be used for medical treatment of a patient, such as a human or animal, wherein the system comprises and makes use of a suspension device according to the proposed solution. Fig. 2 shows a perspective view of an example of the suspension device according to the proposed solution, having a foldable character for holding a bag containing a medical fluid.

[0020] Fig. 3 schematically illustrates hanging of the suspension device of Fig. 2, resulting in folding of the holder.

[0021] Fig. 4 schematically illustrates a cross-sectional view of the suspension device of Fig. 2 being hung up while holding a filled-up bag of medical fluid.

[0022] Fig. 5 corresponds to Fig. 4, with a less filled bag of medical fluid.

[0023] Fig. 6A schematically illustrates a perspective view of an example of the suspension device according to the proposed solution, with multiple apertures configured in the holder to accommodate fluid line conduits to the bag.

[0024] Fig. 6B schematically illustrates a perspective view of an example of the suspension device according to the proposed solution, with an elongated aperture configured in the holder to accommodate fluid line conduits to the bag.

[0025] Fig. 6C schematically illustrates a perspective view of an example of the suspension device according to the proposed solution, wherein an elongated aperture is open at a side of the holder to receive and accommodate fluid line conduits to the bag.

[0026] Fig. 7 schematically illustrates hanging of the suspension device, resulting in folding of the holder when holding the bag, with multiple or alternative configurations of fluid lines connected to the bag.

[0027] Fig. 8 shows a perspective view of another example of the suspension device according to the proposed solution, having a foldable character with comparatively rigid side members for holding a bag containing a medical fluid.

[0028] Fig. 9 schematically illustrates hanging of the suspension device of Fig. 8, resulting in folding of the holder.

[0029] Fig. 10 schematically illustrates a cross-sectional view of the suspension device of Fig. 8 being hung up while holding a filled-up bag of medical fluid.

[0030] Fig. 11 schematically illustrates yet another example of the suspension device, being hung up while holding a bag of medical fluid.

[0031] Fig. 12A schematically illustrates an arrangement of the holder of the suspension device, wherein a sheet of the holder comprises two parts.

[0032] Fig. 12B schematically illustrates a first example of combining the two parts into a total sheet of the holder. Fig. 12C schematically illustrates a second example of combining the two parts into a total sheet of the holder.

[0033] Fig. 13 A schematically illustrates an alternative arrangement of the holder of the suspension device, wherein a sheet of the holder comprises two parts.

[0034] Fig. 13B schematically illustrates a variant of the arrangement according to Fig. 13B of the holder of the suspension device, wherein a sheet of the holder comprises two parts.

[0035] Fig. 13C schematically illustrates an example of combining the two of Fig. 13A parts into a total sheet of the holder.

[0036] Detailed description

[0037] Embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments are shown. Indeed, the subject of the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure may satisfy applicable legal requirements. Like numbers refer to like elements throughout.

[0038] Also, it will be understood that, where possible, any of the advantages, features, functions, devices, and / or operational aspects of any of the embodiments described and / or contemplated herein may be included in any of the other embodiments described and / or contemplated herein, and / or vice versa. In addition, where possible, any terms expressed in the singular form herein are meant to also include the plural form and / or vice versa, unless explicitly stated otherwise. As used herein, "at least one" shall mean "one or more" and these phrases are intended to be interchangeable. Accordingly, the terms "a" and / or "an" shall mean "at least one" or "one or more", even though the phrase "one or more" or "at least one" is also used herein. As used herein, except where the context requires otherwise owing to express language or necessary implication, the word "comprise" or variations such as "comprises" or "comprising" is used in an inclusive sense, that is, to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments.

[0039] It will furthermore be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing the scope of the present disclosure. As used herein, the terms "multiple", "plural" and "plurality" are intended to imply provision of two or more elements. The term "and / or" includes any and all combinations of one or more of the associated listed elements.

[0040] Well-known functions or structures may not be described in detail for brevity and / or clarity. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0041] Fig. 1 schematically illustrates a context and system in which the proposed solution may be used. Embodiments relate to devices and systems for handling a bag 300 configured to contain a medical fluid 301, typically a disposable plastic bag 300. For the purpose of ease of understanding, such bags are also referred to as medical fluid bags 300 herein. Such medical fluid bags 300 are for instance used in RRT. In some exemplary systems, a medical fluid bag 300 is suspended and connected to a medical apparatus 1110, such that the medical fluid 301 is drained from the medical fluid bag 300 into the medical apparatus 1110, e.g., by the force of gravity. Further means for infusing the medical fluid 301 into the medical apparatus 1110 may be provided, such as a pumping mechanism or a suction mechanism. The medical apparatus 1110 may, as such, be an apparatus for preparing a second medical fluid or composition, based on the input medical fluid 301 obtained from the medical fluid bag 300. The medical apparatus 1110 may or may not be configured to also perform RRT by use of the medical fluid 301. In other words, the medical apparatus 1110 may be an RRT machine, for example a dialysis machine.

[0042] In some examples, the medical fluid bag 300 may be pre-filled with the medical fluid 301, wherein the medical fluid bag 300 may undergo shipping and storage prior to connection to the medical apparatus 1110. In other examples, the medical fluid bag 300 may be supplied with the medical fluid 301 from another apparatus 1120, such as a mixing apparatus, in near conjunction with subsequent or simultaneous connection of the medical fluid bag 300 to the medical apparatus 1110.

[0043] By way of example, CRRT is currently performed using sterile dialysis fluid in medical fluid bags 300 provided by a manufacturer. The medical fluid bags 300 are typically 5 liters, but both larger and smaller bags are used. For a standard CRRT treatment, typically 40-60 liters of dialysis fluid is used per 24 hours. This means that one 5-liter medical fluid bag 300 is used in approximately 2-3 hours, requiring an intervention every two to three hours for bag replacement. This causes a temporary stop of the therapy, also known as downtime.

[0044] The cost of bagged fluids, and the labor associated with bag replacements, necessitate thinking of possible alternative ways to achieving the same treatment. A number of different ideas are at hand. In some examples, online production of dialysis fluid may be considered, which refers to production of the dialysis fluid in close time to its use in a medical apparatus 1110. For the example of the medical apparatus 1110 being a dialysis machine, close in time may be within seconds before use in the dialysis machine for treatment of chronically ill patients (HD / HF / HDF machines) or within minutes to hours before use in the dialysis machine in acute setting (CRRT machines).

[0045] One example is based on the foregoing, wherein the mixing apparatus 1120 is located near the medical apparatus 1110, i.e., the CRRT machine, wherein the mixing apparatus 1120 is configured for online production of dialysis fluid. The dialysis fluid produced by the mixing apparatus 1120 is dispensed (e.g., pumped) into bags 300 which may be arranged on, or connected to, the CRRT machine 1110. From the CRRT machine 1110 point of view no structural changes are typically needed, the CRRT 1110 machine may perform the treatment as if fluids used were coming from commercial bags. However, by allowing a mixing apparatus 1120, such as a dialysis fluid generator, to produce the medical fluid some new possibilities arise. This may include use of less durable bag material and a simpler bag design.

[0046] Going forward, various examples and features of the proposed solution will be described for a device usable for handling medical fluid bags 300. It shall be noted that the proposed solution may be implemented for use with factory -filled medical bags 300 or with on site filled medical bags 300, such as described with reference to Fig. 1.

[0047] The proposed solution includes a suspension device 100 which comprises a holder 105 configured for holding the bag 300, and a hanger mechanism 112 arranged on the holder 105, wherein the holder 105 is configured to at least partly enclose the bag 300 when the suspension device 100 is hung by the hanger mechanism 112.

[0048] This way, the suspension device 100 is configured to take the load off the bag material of the medical fluid bag 300. This allows for more relaxed requirements on bag material durability and design complexity of medical fluid bags 300. In turn, this obtains the benefit of requiring less bag material, which may allow for simplified bag production techniques and reduced transportation cost.

[0049] Various exemplary embodiments will be described going forward, with reference to the drawings. It shall be noted that certain features are optional, and moreover that features and functions described with reference to one embodiment may equally be implemented in the other embodiments.

[0050] Figs 2-11 show various aspects of a suspension device 100 for holding a medical fluid bag 300. The suspension device 100 comprises a holder 105 configured to allow the bag 300 to rest at a bottom of the holder 105 when the suspension device 100 is hung up.

[0051] In the embodiments shown in Figs 2-10, the holder 105 may be or comprise a sheet 110 made of a foldable or wrappable material.

[0052] In Fig. 2, the sheet 110 of the holder 105 is shown laid out in a flat configuration. The sheet 110 of the holder 105 may be made from a flexible material. The holder 105 may in various examples comprise a soft plastic material, a textile material such as a woven or nonwoven material, a polymer material such as neoprene, a rubber material, or any combination of layers of such materials.

[0053] The suspension device 100 further comprises a hanger mechanism 112. The hanger mechanism 112 is configured such that the holder 105 at least partly encloses the bag when the suspension device 110 is hung by the hanger mechanism 112. This is schematically shown in Fig. 3.

[0054] Fig. 4 schematically shows a filled medical fluid bag 300, held in the suspension device 100 when arranged as in Fig. 2.

[0055] Fig. 5 shows the same arrangement as in Fig. 4, when less fluid 301 is contained in the medical fluid bag 300.

[0056] Referring back to Fig. 2, the hanger mechanism may comprise hanger members 112 at opposing side portions of the sheet 110. In some examples, the side portions of the holder 105 may be reinforced and may be substantially rigid. In the shown example, the hanger members 112 are apertures or holes formed in the sheet 110 of the holder 105, which are brought together when the suspension device 100 is hung up by in a carrier device 200, which carrier device 200 may comprise pins or hooks configured to engage in the apertures of the hanger members 112, as illustrated in Figs 3-5. The shown example comprises two pairs of apertures, one pair at each side portion of the holder 105 (i.e., left side and right side in Fig. 2). Alternative arrangements of this type of hanger mechanism 112 are plausible, such as only one aperture or more than two apertures per side portion of the holder 105. In some examples, reinforcements are configured at each aperture, such as a metal or plastic ring.

[0057] Other exemplary arrangements of the hanger mechanism 112 may comprise engaging hanger members at opposing side portions of the holder 105, such as mating button members, or mating Velcro members, or a string or flap on one side portion configured to be threaded through an aperture at the other side portion, wherein the flap or string may comprise a loop for engagement to the carrier device.

[0058] The carrier device 200, which as such does not form part of the suspension device 100, may further comprise a scale for measuring the weight of the hung-up suspension device 100, and specifically for the purpose of measuring the weight of a medical fluid 301 of a bag 300 held in the suspension device 100 to determine remaining medical fluid 301 and / or a need to change or refill the bag 300.

[0059] The arrangement of the hanger members of the hanger mechanism 112 at opposing side portions of the holder 105 obtains a folding or wrapping of the sheet 110 of the holder 105 upon the suspension device 100 being hung up by the hanger members in adjacent arrangement. This promotes contact between the holder 105 and the suspended medical fluid bag 300. As illustrated in Figs 4 and 5, contact is promoted also when the amount of fluid 301 in the held bag 300 changes, which is further promoted by the flexibility of the sheet 110 of the holder 105. This has the benefit of ensuring that the bag 300 is safely held in the holder 105.

[0060] A benefit of the proposed solution as shown in the drawings, in particular Figs 2- 5, the holder 105 comprises a sheet 110 configured to form an open-sided container when the suspension device 100 is hung by the hanger mechanism 112. Moreover, the holder 105 may be arranged in substantially flat configuration, as shown in Fig. 2. These characteristics provide for a simple form factor of the suspension device 100, which has the benefit of being easy to clean and store.

[0061] A further aspect of promoting contact between the sheet 110 of the holder 105 and the held bag 300 is related to an objective of preventing heat loss or heat dissipation of the medical fluid 301 in the bag 300. In this context, a heat-containing member 114, 116 is arranged in the holder 105 in various examples, as will be further described below. In some use cases, there may be an intention or advantage in holding the medical fluid 301 at a certain temperature or temperature range, for instance upon supplying the medical fluid 301 from the bag 300 to the medical apparatus 1110 of Fig. 1. In some example scenarios, the medical fluid 301 may be mixed or produced by the mixing apparatus 1120, which may be equipped with a heater, e.g. for disinfection of its own fluid path. This means that the produced medical fluid 301, such as a dialysis fluid, may be heated to a desired temperature. This further means that the heat-containing member 114, 116, or heating means, incorporated on / in the suspension device 100 may only need to compensate for heat losses occurring while the medical fluid 301 resides in the bag 300 and is used by the medical apparatus 1110. The proposed solution further provides a benefit when using factory-produced fluids, supplied in pre-filled bags 300. In this context, the heat-containing member 114, 116 may be used to heat up the fluid 301 in the bag 300, and / or holding the fluid 301 at a proper temperature (e.g. if the bag 300 is heated before connected to the medical apparatus 1110. This may, e.g., reduce the need for using other heating means for preventing undue cooling down of the patient, such as the use of a blood warmer in connection with use of the medical apparatus 1110.

[0062] In some examples, the heat-containing member 114, 116 is incorporated in all sides surface layers of the holder 105 which are configured to be in engagement with the bag 300 when held in the suspension device 100. In other examples, the heatcontaining member 114, 116 is partially incorporated in all sides surface layers of the holder 105 which are configured to be in engagement with the bag 300, or only incorporated in some sides surface layers of the holder 105 which are configured to be in engagement with the bag 300.

[0063] In one example, the heat-containing member comprises an insulation layer 114 in the holder 105, configured to counteract heat dissipation of the medical fluid 301 contained in the bag 300 when held in the holder 105. The insulation layer 114, which is indicated in Fig. 2, may be one of several layers of the sheet 110 of the holder 105, or the holder 105 may as such be formed of an insulating material. The insulation layer 114 may in some examples comprise a gas-containing layer, such as a bubble foam, neoprene or similar. In some examples, the insulation layer 114 may comprise a reflective surface, such as a layer of aluminum or other metal. The insulation layer 114 thus provides the technical effect of reducing heat loss, or dissipation, from the medical fluid 301 contained in the bag 300 when held in the suspension device 100.

[0064] In some examples, the heat-containing member comprises a heating layer 116 in the holder 105, configured to maintain heat in or supply heat to the medical fluid 301 contained in the bag 300 when held in the holder 105. In this context, the heating layer 116 may be configured to maintain a contact surface of the bag 300, which is engaged by the heating layer 116 in holder 105, at a certain desired temperature. The heating layer 116 may be included as an alternative to the insulation layer 114, or in combination with the insulation layer 114.

[0065] In some examples, the heating layer 116 comprises a heating wire in a layer of the holder 105. In some examples, the heating layer 116 comprises a heating film, provided in a layer of the holder 105. The heating layer 116 may be provided with a connector to an electric power supply. The power supply may comprise a battery holder 120 connected to drive the heating layer, when one or more batteries are held in the battery holder 120. The battery holder 120 may be attached to the holder 105 of the suspension device 100. Alternatively, or additionally, the suspension device 100 may comprise a connector 118 for connecting the heating layer 116 to an external power supply, such as to a mating connector on the medical apparatus or to a mains outlet.

[0066] In some examples, the heating layer 116 is configured to self-regulate to a predetermined temperature. In this context, the heating layer 116 may in some examples comprise a so-called smart heat film. A smart heat film, also known as a smart heating film or electric heating film, is a thin, flexible material designed to provide heat through the application of electric current. It is commonly used in various heating applications due to its efficiency and versatility. Smart heat films are typically very thin and can be easily integrated into various surfaces and are configured to convert electrical energy directly into heat with high efficiency, reducing energy loss and lowering operating costs. These films provide uniform heat distribution across their surface, eliminating cold spots and enhancing comfort. The smart heat film of the heating layer 116 may comprise built-in temperature control mechanisms to prevent overheating. In some examples the smart heat film may be manufactured of a material which has a positive temperature coefficient (PTC) as an inherent material characteristic. This means that the electric resistance of the material increases with the increase of the temperature. Distinguished from other heating elements whose electric resistances are relatively constant, a PTC heating film is capable of controlling the temperature itself, by regulating its heating power via its electric resistance response to temperature. Heating is mainly obtained by the PTC material providing infra-red radiation to the environment. Materials used in such PTC heating films may be carbon-based, such as amorphous polymers, and are as such well-known. In an alternative to a self-regulating material, the heating layer 116 may comprise electric circuitry which is configured to shut off a heating current at a certain temperature.

[0067] The heating layer 116 may thus be designed to be fail safe in the sense that the fluid 301 of the bag 300 cannot be overheated. By way of example, the heating layer 116 may be configured to not exceed a temperature of 37 degrees Celsius and will automatically control the supply of heat to meet that specific temperature.

[0068] The configuration of the holder 105 of the suspension device 100, wherein the holder 105 is configured to be laterally collapsible when the suspension device 100 is hung by the hanger mechanism, provides the benefit of promoting good wall-to-wall contact between the holder 105 and the held bag 300. Specifically, it allows for good surface connection with the bag 300 as the fluid 301 is filled / emptied. In combination with the heat-containing member, i.e., the insulation layer 114 and / or the heating layer 116, the promoted surface connection with the bag 300 provides a beneficial mechanism for heat control of the medical fluid 301.

[0069] In some examples, and as seen in Fig. 2, the suspension device 100 further comprises at least one aperture 122 formed in the holder 105 for accommodating a fluid line conduit 310 to the bag. Arrangement of the fluid line conduit 310 to the bag 300 is further illustrated in Figs 4 and 5. The fluid line conduit 310 may be used for draining fluid 301 from the bag 300 and / or filling fluid 301 into the bag 300. Typically, the fluid line conduit 310 may be connected to the medical apparatus 1110, as indicated by conduit 1111 in Fig. 1. The at least one aperture 122 may be configured to be arranged at a low point of the suspension device 100, upon being hung, as shown e.g., in Figs 4 and 5. This may be obtained by the at least one aperture 122 being formed centrally in the sheet 110 of the holder 105, or at least substantially equidistantly between the hanger members arranged at the opposing side portions of the holder 105.

[0070] Figs 6A, 6B, 6C and 7 schematically illustrates variants of the embodiments shown in Figs 2-5. For the sake of simplicity, the heat-containing member 114, 116 is left out of this drawing. As shown in Fig. 7, these different variants provide different configurations for allowing convenient suspension of bags 300 with different fluid line conduit (or connection) configuration, and / or suspension of bags 300 with multiple fluid line conduits.

[0071] In the example of Fig 6A, the at least one aperture 122 comprises a plurality of separate apertures (three, by way of example) 1221, 1222, 1223, formed in the holder 105 for individually accommodating fluid line conduits 3101, 31102, 3103 to the bag 300. According to one aspect, the separate apertures 1221, 1222, 1223 may be arranged so as to align with different types of bags 300. By way of example, bags 300 may be configured with a single fluid line conduit (or connector for such a conduit) at a certain lateral bottom position of the bag 300, e.g., a central position or at a preconfigured offset to the central position. In other examples, certain bags 300 may be configured with more than one fluid line conduit (or connector for such a conduit) at certain lateral positions and spacings. The arrangement of plural apertures 1221, 1222, 1223 in the holder 105 may thus be configured to specifically fit with certain known bag dimensions, or at least provide a variety of selectively usable apertures to conveniently accommodate a large variety of bag designs.

[0072] In the alternative example of Fig. 6B, the at least one aperture 1224 is elongated, e.g. laterally elongated. This provides a slit-shaped aperture 1224, and allows for accommodating plural fluid line conduits 3101, 3102, 3103 to the bag 300, and for holding bags 300 with different alternative fluid line conduit configurations. A reinforcement 1225 may be included in the sheet 110 of the holder 105 around the aperture 1224 to prevent undue widening of the aperture 1224, such as an elongated metal or plastic ring.

[0073] In the example of Fig. 6C, a configuration similar to that of Fig. 6B is shown, with an elongated, slit-shaped aperture 1224, which allows for accommodating plural fluid line conduits 3101, 3102, 3103 to the bag 300, and for holding bags 300 with different alternative fluid line conduit configurations. The reinforcement 1225 is also indicated. The aperture 1224 further comprises an entry portion 1226 which is open to one side of the sheet 110 of the holder 105. This provides for easy loading of a bag 300 into the holder 105, without having to thread any fluid line conduit through the aperture 1224.

[0074] As an optional feature in the embodiment of Fig. 6C, the sheet 110 may comprise means for closing the entry portion 1226, e.g., after tube insertion through the entry portion 1226 to the aperture 1224. These means may comprise a closure device 1227, such as a strap connected to the sheet 110 at one side of the entry portion 1226 (right side in the drawing) which disconnectably or releasably attaches to the sheet 110 at the other side of the entry portion 1226 (left side in the drawing), e.g. by a Velcro arrangement. Such a closure device 1227 may serve to stabilize the bag 300 in the holder 100. In alternative arrangements, the closure device 1227 may wrap around the side of the holder 100 once the holder 100 is folded to hold the bag 300, rather than in the elongate direction shown in Fig. 6C.

[0075] In some examples, the elongated aperture 1224, or each of the plurality of apertures 1221, 1222, 1223, may be configured to be arranged at a low point of the suspension device 100, upon being hung, as shown in Fig. 7.

[0076] When the suspension device 100 is used in conjunction with a system setup of Fig. 1, separate apertures (of the plurality of apertures 1221, 1222, 1223) may be used for a fluid line conduit 1111 to the medical apparatus, for draining medical fluid 301 from the bag 300, and for a fluid line conduit 1121 to the mixing apparatus, for filling of medical fluid 301 to the bag 300. Alternatively, both fluid line conduits 1111 and 1121 may be led through one and the same aperture 122, 1224.

[0077] Figs 8-10 schematically show a second embodiment, which for the most part may comprise the same features as the embodiment described with reference to Figs 2-7. Similar to the embodiment described with reference to Figs 2-7, the suspension device 100 may comprise different types of hanger mechanism 112, a heat-containing member 114, 116, and more than one aperture 122, even though this is not shown in Figs 8-10. The description provided with reference to those features is thus equally applicable to the embodiment of Figs 8-10.

[0078] Corresponding to the previously described embodiment, the embodiment shown in Figs 8-10 comprises a holder 105 which is configured to be laterally collapsible when the suspension device 100 is hung by its hanger mechanism 112. Also corresponding to the previously described embodiment, the holder 105 may comprise a sheet 110, and is configured to form an open-sided container when the suspension device 100 is hung up by the hanger mechanism 112. Additionally, the holder 105 may be arranged in a substantially flat configuration, as shown in Fig. 8. As noted, these aspects provide a simple form factor, which is easy to clean and store.

[0079] In the embodiment of Figs 8-10, the sheet 110 of the holder 105 comprises a pair of plates 111, 115, which are connected to be foldable at a central portion 113 of the holder 105. The plates 111, 115 may be substantially rigid, and may comprise a layer of a plastic or metal material in the sheet 110 of the holder 105. As is evident from Figs 9 and 10, the plates 111 and 115 are configured to remain substantially planar, upon folding of the holder 105. Folding may be alleviated by means of a hinge, or a flexible material, arranged between the central portion 113 and the plates 111 and 115. This is schematically indicated in Fig. 8 by dash-dotted lines on the holder 105.

[0080] Fig. 10 schematically illustrates a cross-sectional view of a bag 300 being held in the suspension device 100 of Figs 8 and 9. In this example, the carrier device 200 may separately connect to the opposing hanger members on the holder 105, such that the plates 111, 115 are forced to fold under the force of gravity of the held bag 300. This promotes a larger surface of contact between the holder 105 and the bag, which may add to preventing heat dissipation, as discussed.

[0081] Fig. 11 schematically shows another alternative embodiment of the suspension device 100. Similar to the embodiments described in the foregoing, the suspension device 100 may comprise different types of hanger mechanism 112, a heat-containing member 114, 116, and more than one aperture 122, even though this is not depicted in Fig. 11. The description provided with reference to those features is thus equally applicable to the embodiment of Fig. 11.

[0082] In this example, the holder 105 comprises a sack 117 made of a sheet of a flexible material, such as any of those described in conjunction with Fig. 2. Thereby, rather than being configured to form an open-sided container when the suspension device 100 is hung up by the hanger mechanism 112, the holder 105 is configured to laterally collapsible from all side directions towards the bag 300 held in the suspension device 100. This forms an even larger contact interface between the holder 105 and the bag 300, and more securely holds the bag 300 in place in the suspension device 100. Moreover, where a heat-containing member is included, improved heat dissipation prevention by means of the insulation layer 114 and / or applied heating from a heating layer 116 is obtained.

[0083] Figs 12A, 12B and 12C schematically show cut-out portions of another type of embodiment of the proposed solution, particularly related to the sheet 110 of the holder 105. In this embodiment the sheet 110 is partitioned into two sheet parts 110A and HOB. These are substantially identical, and for the sake of simplicity reference will be made to the first sheet part 110A to describe features which are common (and identified with suffix B for the second sheet part HOB instead of A).

[0084] The sheet part 110A is configured with a slit-shaped aperture part 122A, extending from an end side of the sheet part 110A. This slit-shaped aperture part 122A forms finger-like end portions 1231 A and 1232A on opposite sides of the shaped aperture part 122 A.

[0085] To form the complete sheet 110, the sheet parts 110A and HOB are positioned together, such that the aperture parts 112A and 112B align and form the aperture 122 at an interface between the first sheet part 110A and second 110B sheet part. This allows for easy arrangement of the bag 300 in the sheet 110 of the holder 105, without having to thread fluid line conduits through the aperture 122. The interface between the first sheet part 110A and second 110B sheet part may be configured at a central position of the combined sheet 110.

[0086] Fig. 12B shows an example of placement of the first sheet part 110A over the second sheet part 110B, to mate the two sheet parts 110A and 110B into the sheet 110.

[0087] Fig. 12C shows another example of mating the two sheet parts 110A and 110B into the sheet 110. Herein, the finger parts 1231 A and 1232 A of the first sheet part 110A are threaded on opposite sides of the corresponding finger parts 123 IB and 1232B of the second sheet part 110B.

[0088] In some examples, mating engagement members 1241 A and 1241B, and 1242A and 1242B may be arranged on the sheet parts 110A and 110B, as illustrated. Such mating engagement members may e.g. be mating Velcro surfaces, which combine to form engagements 1241 A&B and 1242A&B, as shown in Figs 12B and 12C.

[0089] In Figs 13A, 13B and 13C, further alternative examples of the general embodiment described with reference to Figs 12A, 12B, and 12C are described, wherein the sheet 110 is partitioned into two sheet parts 110A and 110B. These parts 110A and 110B are substantially identical, and for the sake of simplicity reference will be made to the first sheet part 110A to describe features which are common (and identified with suffix B for the second sheet part HOB).

[0090] With reference to Fig. 13 A, the sheet part comprises a plurality of finger-like end portions 1231 A, 1232A, and 1233 A (more than three are plausible). A slit-shaped aperture part 122 A may be formed, extending from an end side of the sheet part 110A, at a base between two adjacent ones of the finger-like end portions. This slit-shaped aperture part 122A may form a section of a circular aperture 122.

[0091] Fig. 13B shows a similar arrangement of the two sheet parts 110A and 110 B as in Fig. 13A, with the difference that a plurality of slit-shaped aperture parts 122A are formed in each slit part 110A and HOB, e.g., at each base between two adjacent ones of the finger-like end portions. Each slit-shaped aperture part 122 A may form a section of a circular aperture 122.

[0092] Fig. 13C schematically shows placement and engagement of the first sheet part 110A and the second sheet part HOB of Fig. 13 A, to mate the two sheet parts 110A and 110B into the sheet 110. This corresponds to the arrangement of Fig. 12C, wherein the finger parts 1231 A, 1232 A, and 1233 A of the first sheet part 110A are threaded on opposite sides of the corresponding finger parts 123 IB, 1232B, 1233B of the second sheet part 110B. The slit-shaped aperture parts 122 A and 122B form the aperture 122 at an interface between the first sheet part 110A and second 110B sheet part. This interface may be configured at a central position of the combined sheet 110. Understandably, the corresponding mating of the sheet parts 110A and 110B of Fig. 13B would render the corresponding complete sheet 110, but with plural apertures 122.

[0093] In some examples, mating engagement members corresponding to what was described with reference to Figs 12A, 12B and 12C may be included in the examples of Figs 13A, 13B, and 13C, but have been left out for the sake of clarity. Such mating engagement members may e.g. be mating Velcro surfaces. In an alternative embodiment, the threading of the finger parts 1231 A, 1232A, and 1233 A with the finger parts 123 IB, 1232B, 1233B provides sufficient frictional force, under the weight of the bag 300 held in the holder 105, to maintain engagement of the two sheet parts 110A and 110B. In this context, the surface of the sheet parts 110A and 110B, at least on the finger parts and the surfaces those finger parts engage (as in Fig. 13C) are fabricated in a high friction material, such as silicone or rubber.

[0094] An aspect that the aforementioned embodiments all have in common, is that the holder 105 of the suspension device 100 is configured to allow the bag 300 to rest at a bottom of the holder 105 when the suspension device 100 is hung by the hanger mechanism 112. This provides the benefit of allowing a simplified medical fluid bag 300 design. For one thing, less durable material in the bag 300 may be used, as it will not have to carry its own weight. Moreover, special arrangements in the bag 300 for hanging the bag 300, such as reinforced apertures, may be dispensed with. Further, the simple design of a laterally collapsible holder 105 which forms a sack for holding the bag 300, allows for use of different sizes and forms of the bag 300 without having to change or make adjustments in the carrier device 200 at or on the medical apparatus 1110.

[0095] Returning to Fig. 1, the proposed solution may be employed in a medical system 1000. The system comprises a medical apparatus 1110 comprising an input interface 1112 configured to connect to a fluid line conduit 1111. The medical apparatus may be a dialysis machine. The system further comprises a carrier device 200 for carrying a bag 300 containing a medical fluid 301 to be supplied to the input interface. The carrier device 200 may be attached to the medical apparatus 1110 or be a separate element. In this context, the fluid line conduit 1111 may connect the bag to the input interface 1112, to allow the medical fluid 301 to be drained, sucked, or pumped into the medical apparatus 1110. The medical fluid 301 may be a dialysis fluid. The system is further characterized in that it comprises a suspension device 100 comprising any of the features or functions described herein.

[0096] The system may further comprise a preparation apparatus 1120, configured to supply the medical fluid 301 to the bag 300. The preparation apparatus 1120 may be configured to prepare the medical fluid 301 to be supplied to the bag 300, such as to mix, produce, and / or heat the medical fluid 301. The preparation apparatus 1120 may comprise an interface 1122 for connecting a fluid line conduit 1121 to the bag 300.

[0097] In association with the system 1000 of Fig. 1, various examples of operating the system 1000 for using the suspension device 100 will now be described. The method is described in the context of a medical apparatus 1110, which may be a dialysis machine.

[0098] The proposed solution thus provides for use of the system 1000 to carry out a method for connecting a medical fluid bag 300 to a medical apparatus, for the purpose of supplying a medical fluid 301 from the bag 300 to the medical apparatus 1110. The method comprises arranging the bag 300 in a holder 105 of a suspension device 100, wherein the suspension device 100 is hung up such that the bag 300 rests at a bottom of the holder 105 while the holder 105 carries and at least partly encloses the bag 300. The method further comprises connecting a fluid line conduit 1111 between the bag 300 and the medical apparatus 1110.

[0099] The holder 105 may be configured to collapse laterally towards the held bag. In some examples, the holder 105 comprises a sheet 110 having hanger parts 112 at opposing side portions, wherein arranging the bag 300 in the holder 105 comprises: wrapping the sheet 110 to form an open-sided container in which the bag 300 is held; and hanging up the suspension device 100 by the hanger members in adjacent arrangement. The suspension device 100 may be hung in a carrier device 200, which may form part of the medical apparatus 1110 or be a separate element.

[0100] Connection of the fluid line conduit 1111 may be made through at least one aperture 122 formed in the holder 105. Said at least one aperture 122 may be arranged at a low point of the hung suspension mechanism.

[0101] The method may further comprise supplying the medical fluid 301 to the bag 300 from a preparation apparatus 1120, when the bag 300 is already held in the holder 105, using a fluid input conduit 1121.

[0102] Using the suspension device 100 may further comprise counteracting heat loss from the medical fluid 301 contained in the bag 300, using a heat-containing member 114, 116 arranged in the holder 105. The heat-containing member may comprise an insulation layer 114 in the holder 105, configured to counteract heat dissipation from the held bag 300. Alternatively, or additionally, the heat-containing member may comprise a heating layer 116, wherein the method further comprises connecting the heating layer 116 to a power supply. The power supply may be a battery pack 120, or a power connector (not shown) on the medical apparatus 1110, on the preparation apparatus 1120, or elsewhere, such as a mains outlet.

[0103] Various aspects of the proposed solution have been outlined in the foregoing. The proposed solution provides several benefits over standard solutions which involve supplying medical fluid in pre-contained bags which are hung up in holes or other suspension means arranged in the bag itself. These benefits may involve one or more of the following:

[0104] Fluid produced in factories need to be filled in bags durable enough to allow for transportation without breaking and / or leaking. Using bags 300 that are filled on-site, from a preparation apparatus 1120, means that less strict durability requirements on the bag may be imposed.

[0105] Factory -produced bags may need built-in suspension means, such as holes, in order to be hung on or at the medical apparatus. Such bags may further need a reinforced design around the holes, and the bag as a whole, to be able to withstand the load when used. These restrictions may be avoided or alleviated when the suspension device 100 is used, which allows for less complex bag design without its own suspension means.

[0106] Factory -produced bags need to have properties to be gas tight and / or vapor tight according to some requirements to allow for different kinds of storage and transportation. Arranging a system 1000 wherein the bags 300 are filled on-site, or online, means that material with less demands on transport and storage properties may be used for the bags 300.

[0107] Factory -produced bags may need some additional heating before use, either after input into the medical apparatus or before. Some heating arrangement is thus required. This may be provided by the heat-containing member 114, 116 arranged in the holder 105. Furthermore, on-line produced fluid 301 can be pre-heated in the preparation apparatus 1120 and delivered to the bag 300 at some proper temperature. In this context, the heat-containing member 114, 116 arranged in the holder 105 may be sufficient to maintain, or additionally heat, the medical fluid 301 contained in the bag 300.

[0108] The proposed solution may be realized in accordance with any combination of the following aspects.

[0109] Aspect 1. A suspension device (100) for holding a medical fluid bag, said suspension device comprising: a holder (105) configured for holding the bag; and a hanger mechanism (112) arranged on the holder, wherein the holder is configured to at least partly enclose the bag when the suspension device is hung by the hanger mechanism.

[0110] Aspect 2. The suspension device of aspect 1, wherein the holder is configured to be laterally collapsible when the suspension device is hung by the hanger mechanism.

[0111] Aspect 3. The suspension device of aspect 1 or 2, wherein the holder comprises a sheet (110) configured to form an open-sided container when the suspension device is hung by the hanger mechanism.

[0112] Aspect 4. The suspension device of aspect 3, wherein the sheet is made from a flexible material. Aspect 5. The suspension device of aspect 3, wherein the sheet comprises a pair of plates (111, 115) which are connected to be foldable at a central portion (113) of the holder.

[0113] Aspect 6. The suspension device of any of aspects 3-5, wherein the sheet comprises two sheet parts (110A, HOB) configured to be engaged to form said sheet.

[0114] Aspect 7. The suspension device of aspect 1 or 2, wherein the holder comprises a sheet forming a sack (117) of a flexible material.

[0115] Aspect 8. The suspension device of any preceding aspect, wherein the hanger mechanism comprises hanger members (112) at opposing side portions of the sheet, to promote contact between the sheet and the bag upon the suspension device being hung up by the hanger members in adjacent arrangement.

[0116] Aspect 9. The suspension device of any preceding aspect, further comprising: at least one aperture (122) formed in the sheet for accommodating a fluid line conduit (310) to the bag.

[0117] Aspect 10. The suspension device of aspect 9, wherein the at least one aperture is formed centrally in the sheet, whereby the at least one aperture is configured to be arranged at a low point of the suspension mechanism, upon being hung.

[0118] Aspect 11. The suspension device of aspect 9 or 10, wherein the at least one aperture (122) comprises a plurality of separate apertures (1221, 1222, 1223) formed in the sheet for individually accommodating fluid line conduits (3101, 31102, 3103) to the bag.

[0119] Aspect 12. The suspension device of aspect 6 in combination with any of aspects 9-11, wherein the at least one aperture is formed at an interface between the first sheet part and the second sheet part upon being combined to form said sheet.

[0120] Aspect 13. The suspension device of aspect 9 or 10, wherein the at least one aperture comprises an elongated aperture (1224) formed in the sheet for accommodating at least one fluid line conduit to the bag.

[0121] Aspect 14. The suspension device of aspect 13, wherein the elongated aperture (1224) has an entry portion (1126) open to a side edge of the sheet.

[0122] Aspect 15. The suspension device of any preceding aspect, further comprising: a heat-containing member (114, 116) arranged in the holder. Aspect 16. The suspension device of aspect 15, wherein the heat-containing member comprises an insulation layer (114) in the holder, configured to counteract heat dissipation of the medical fluid contained in the bag when held in the holder.

[0123] Aspect 17. The suspension device of aspect 15 or 16, wherein the heat-containing member comprises a heating layer (116) in the holder, configured to supply heat to the medical fluid contained in the bag when held in the holder.

[0124] Aspect 18. The suspension device of aspect 17, wherein the heating layer comprises a heating film.

[0125] Aspect 19. The suspension device of aspect 17 or 18, wherein the heating layer is self-regulating to a predetermined temperature.

[0126] Aspect 20. The suspension device of any of aspects 17-19, further comprising a battery holder (120) connected to drive the heating layer.

[0127] Aspect 21. The suspension device of any of aspects 17-20, further comprising a connector (118) for connecting the heating layer to a power supply.

[0128] Aspect 22. The suspension device of any preceding aspect, wherein the holder is configured to allow the bag to rest at a bottom of the holder when the suspension device is hung by the hanger mechanism.

[0129] Aspect 23. A medical system (1000), comprising: a medical apparatus (1110) comprising an input interface (1112) configured to connect to a fluid line conduit (1111); a carrier device (200) for carrying a bag (300) containing a medical fluid to be supplied to the input interface; and a suspension device (100) according to any of the preceding aspects, configured to be hung by the carrier device.

[0130] Aspect 24. The system of aspect 23, further comprising: a preparation apparatus (1120), configured to supply the medical fluid to the bag (300).

[0131] Aspect 25. A method for connecting a medical fluid bag to a medical apparatus for enabling supply of the medical fluid contained in the bag to the medical apparatus, comprising: arranging the bag in a holder of a suspension device, wherein the suspension device is hung up such that the bag rests at a bottom of the holder while the holder carries and at least partly encloses the bag; and connecting a fluid line conduit between the bag and the medical apparatus.

[0132] Aspect 26. The method of aspect 25, comprising: configuring the holder to collapse laterally towards the held bag.

[0133] Aspect 27. The method of aspect 25 or 26, wherein the holder comprises a sheet having hanger parts at opposing side portions, wherein arranging the bag in the holder comprises: wrapping the sheet to form an open-sided container in which the bag is held; and hanging up the suspension device by the hanger members in adjacent arrangement.

[0134] Aspect 28. The method of any of aspects 25-27, wherein connecting the fluid line conduit is made through at least one aperture formed in the holder.

[0135] Aspect 29. The method of aspect 28, wherein said at least one aperture is arranged at a low point of the hung suspension mechanism.

[0136] Aspect 30. The method of any of aspects 25-29, comprising: supplying the medical fluid to the bag from a preparation apparatus, when the bag is held in the holder, using a fluid input conduit.

[0137] Aspect 31. The method of any of aspects 25-30, comprising: counteracting heat loss from the medical fluid contained in the bag, using a heatcontaining member arranged in the holder.

[0138] Aspect 32. The method of aspect 31, comprising: connecting a heating layer of the heat-containing member to a power supply.

[0139] While the subject of the present disclosure has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the subject of the present disclosure is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

Claims

CLAIMS1. A suspension device (100) for holding a medical fluid bag, said suspension device comprising: a holder (105) configured for holding the bag, wherein the holder comprises a flat foldable sheet (110); and a hanger mechanism (112) arranged on the holder for hanging the suspension device, characterized in that the hanger mechanism comprises hanger members (112) at opposing side portions of the sheet, such that the sheet is configured to fold and at least partly enclose the bag and allow the bag to rest at a bottom of the sheet when the suspension device is hung by said hanger members.

2. The suspension device of claim 1, wherein the holder is configured to be laterally collapsible when the suspension device is hung by the hanger mechanism.

3. The suspension device of claim 1 or 2, wherein the sheet (110) is configured to form an open-sided container when the suspension device is hung by the hanger mechanism.

4. The suspension device of claim 3, wherein the sheet is made from a flexible material.

5. The suspension device of claim 3, wherein the sheet comprises a pair of plates (111, 115) which are connected to be foldable at a central portion (113) of the holder.

6. The suspension device of any of claims 3-5, wherein the sheet comprises two sheet parts (110A, HOB) configured to be engaged to form said sheet.

7. The suspension device of any preceding claim, wherein the suspension device is configured to be hung by the hanger members in adjacent arrangement to promote contact between the sheet and the bag.

8. The suspension device of any preceding claim, further comprising: at least one aperture (122) formed in the sheet for accommodating a fluid line conduit (310) to the bag.

9. The suspension device of claim 8, wherein the at least one aperture is formed centrally in the sheet, whereby the at least one aperture is configured to be arranged at a low point of the suspension mechanism, upon being hung.

10. The suspension device of claim 8 or 9, wherein the at least one aperture (122) comprises a plurality of separate apertures (1221, 1222, 1223) formed in the sheet for individually accommodating fluid line conduits (3101, 31102, 3103) to the bag.

11. The suspension device of claim 5 in combination with any of claims 8-10, wherein the at least one aperture is formed at an interface between the first sheet part and the second sheet part upon being combined to form said sheet.

12. The suspension device of claim 8 or 9, wherein the at least one aperture comprises an elongated aperture (1224) formed in the sheet for accommodating at least one fluid line conduit to the bag.

13. The suspension device of claim 12, wherein the elongated aperture (1224) has an entry portion (1126) open to a side edge of the sheet.

14. The suspension device of any preceding claim, further comprising: a heat-containing member (114, 116) arranged in the holder.

15. The suspension device of claim 14, wherein the heat-containing member comprises an insulation layer (114) in the holder, configured to counteract heat dissipation of the medical fluid contained in the bag when held in the holder.

16. The suspension device of claim 14 or 15, wherein the heat-containing member comprises a heating layer (116) in the holder, configured to supply heat to the medical fluid contained in the bag when held in the holder.

17. The suspension device of claim 16, wherein the heating layer comprises a heating film.

18. The suspension device of claim 16 or 17, wherein the heating layer is selfregulating to a predetermined temperature.

19. The suspension device of any of claims 16-18, further comprising a battery holder (120) connected to drive the heating layer.

20. The suspension device of any of claims 16-19, further comprising a connector (118) for connecting the heating layer to a power supply.

21. A medical system (1000), comprising: a medical apparatus (1110) comprising an input interface (1112) configured to connect to a fluid line conduit (1111); a carrier device (200) for carrying a bag (300) containing a medical fluid to be supplied to the input interface; and a suspension device (100) according to any of the preceding claims, configured to be hung by the carrier device.

22. The system of claim 21, further comprising: a preparation apparatus (1120), configured to supply the medical fluid to the bag(300).

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