Dry powder bag and dialysis system

Abstract

The present application relates to the technical field of medical devices and provides a dry powder bag and a dialysis system. The dry powder bag comprises a mounting portion and a bag body. The mounting portion is provided with a liquid inlet channel and a liquid outlet channel configured to connect to a dialysis machine. The bag body is a hollow structure with openings at two ends, one end opening forms a connection opening, and the connection opening is hermetically connected to the mounting portion. A port at one end of the liquid inlet channel and a port at one end of the liquid outlet channel are both located inside the bag body. The other end opening of the bag body forms a powder loading opening configured to fill the bag body with hemodialysis dry powder. The described solution can solve the problems below in the related art: a dedicated powder-filling channel needs to be provided on a mounting portion of a dry powder bag, and this results in low powder filling efficiency and makes the structure complex; in addition, after powder filling is completed, the powder-filling channel also needs to be sealed, and this increases the production steps and results in increased costs.

Description

Dry powder bag and dialysis system TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a dry powder bag and a dialysis system. BACKGROUND

[0002] Hemodialysis is an effective means for treating renal failure. Hemodialysis concentrate is an indispensable component in the process of hemodialysis. The existing hemodialysis concentrate mainly includes hemodialysis concentrate solution and hemodialysis dry powder. The hemodialysis dry powder is contained in a dry powder bag for use. The dry powder bag includes a connecting part and a bag body. The connecting part is used for being mounted on a dialysis machine, and the bag body is used for containing the hemodialysis dry powder.

[0003] In the related art, one end of the bag body is sealingly connected to the connecting part, and the other end is sealingly closed. The connecting part is provided with a powder filling groove, which is in communication with the internal space of the bag body. The hemodialysis dry powder is filled into the bag body through the powder filling groove. Since the powder filling groove is provided with a liquid inlet channel and a liquid outlet channel, the size of the powder filling groove is relatively small, which leads to a low powder filling efficiency. In addition, the connecting part is provided with the powder filling groove, which has a complex structure. Moreover, after the powder filling is completed, the powder filling groove needs to be sealed again, which increases the production process and production cost. SUMMARY

[0004] Therefore, the present application provides a dry powder bag and a dialysis system to solve the problems in the related art that a special powder filling groove is provided on the connecting part of the dry powder bag, the powder filling efficiency is low, and after the powder filling is completed, the powder filling groove needs to be sealed, which increases the production process and production cost.

[0005] To achieve the above object, the present application provides the following technical solutions.

[0006] In a first aspect, the present application provides a dry powder bag, which includes a connecting part and a bag body. The connecting part is provided with a liquid inlet channel and a liquid outlet channel for being connected to a dialysis machine. The bag body has a hollow structure with two open ends. One end of the bag body forms a connecting opening, which is sealingly connected to the connecting part. The other end of the bag body forms a powder filling opening for filling the hemodialysis dry powder into the bag body. The side port of the liquid inlet channel and the side port of the liquid outlet channel are both located in the internal space of the bag body.

[0007] Optionally, the part of the liquid inlet channel located in the internal space of the bag body is provided with a filter structure.

[0008] Optionally, the side port of the liquid inlet channel located in the internal space of the bag body is connected to a bottom plate and is blocked by the bottom plate. The side wall of the liquid inlet channel located in the internal space of the bag body is provided with filter pores for allowing liquid to flow into the internal space of the bag body and filtering the liquid. The bottom plate, the side wall of the liquid inlet channel provided with the filter pores, and the filter pores form a filter structure.

[0009] Optionally, the bottom plate and the liquid inlet channel are integrated.

[0010] Optionally, the number of the filter pores is multiple, and at least part of the filter pores are filter slots in strip shape.

[0011] Optionally, a strip-shaped hole is formed at the position of the filter slot, and along the thickness direction of the filter structure, the strip-shaped hole is a tapered hole with an expanding or a narrowing opening, and the narrowing opening of the strip-shaped hole forms the filter slot.

[0012] Optionally, an installation plate is arranged in the end of the liquid inlet channel for communicating with the bag body, and the installation plate and the inner wall of the end of the liquid inlet channel for communicating with the bag body enclose an installation space. The installation plate is provided with a through hole, and the filter structure is arranged on the installation plate and located in the installation space, and the liquid inlet end of the filter structure communicates with the through hole.

[0013] Optionally, the liquid inlet channel, the installation plate and the filter structure are integrated.

[0014] Optionally, the liquid outlet channel forms a liquid outlet at one side port inside the bag body, and the dry powder bag further comprises a liquid outlet pipe, one end of the liquid outlet pipe is connected to the liquid outlet, and the other end of the liquid outlet pipe extends to one end where the powder loading opening is located.

[0015] Optionally, a filter element is arranged on the liquid inlet pipe.

[0016] Optionally, the liquid inlet channel comprises a first liquid inlet part, and the first liquid inlet part is used for connecting the dialysis machine, and the port of the first liquid inlet part connected to the dialysis machine is provided with a first sealing structure.

[0017] Optionally, the liquid outlet channel comprises a liquid outlet, a first liquid outlet part, a second liquid outlet part and a third liquid outlet part which are sequentially communicated, and the other port of the third liquid outlet part is provided with a second sealing structure.

[0018] Optionally, an intermediate connecting part is arranged between the liquid inlet channel and the liquid outlet channel to adapt to the size of the dialysis machine and the size of the bag body.

[0019] Optionally, the intermediate connecting part comprises a hollow column, and the inside of the hollow column is provided with a cover.

[0020] Optionally, the hollow column and the cover are integrally formed.

[0021] Optionally, the connecting part has a handle.

[0022] A dialysis system comprises the dry powder bag.

[0023] In the embodiment of the present application, the bag body is a hollow structure with two open ends, the connecting opening of the bag body is sealingly connected to the mounting portion, and the other end opening of the bag body forms a powder mounting opening for filling the hemodialysis dry powder into the interior of the bag body. That is, in the dry powder bag of the embodiment of the present application, the cross-sectional area of the powder mounting structure (i.e. the powder mounting opening) is equal to the cross-sectional area of the bag body, which increases the cross-sectional area of the powder mounting structure compared to the related art, thereby improving the powder mounting efficiency.

[0024] In addition, the embodiment of the present application does not need to open a special powder filling channel, and the structure is more simplified. After the powder filling is completed, the powder filling channel does not need to be sealed, and the related art needs to seal the end of the bag body away from the mounting portion. Therefore, compared with the prior art, the embodiment of the present application reduces the production steps of sealing the powder filling channel, thereby reducing the production cost. It can be seen that the dry powder bag provided by the embodiment of the present application can solve the problems in the related art that a special powder filling channel is opened on the mounting portion of the dry powder bag, the powder filling efficiency is low, and after the powder filling is completed, the powder filling channel needs to be sealed, which increases the production process and leads to the increase of production cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creative labor.

[0026] FIG. 1 is a structural schematic diagram of a dry powder bag provided by the embodiment of the present application.

[0027] FIG. 2 is a sectional view of the dry powder bag provided by the embodiment of the present application.

[0028] FIG. 3 is a structural schematic diagram of a mounting portion with a first filter structure provided by the embodiment of the present application.

[0029] FIG. 4 is a sectional view of the mounting portion with the first filter structure provided by the embodiment of the present application.

[0030] FIG. 5 is an enlarged view of A in FIG. 4.

[0031] FIG. 6 is a sectional view of a mounting portion with a second filter structure provided by the embodiment of the present application.

[0032] FIG. 7 is an enlarged view of B in FIG. 6.

[0033] FIG. 8 is a structural schematic diagram of a first side (upper portion) of the mounting portion with the second filter structure provided by the embodiment of the present application.

[0034] FIG. 9 is a top view of FIG. 8.

[0035] Fig. 10 is a structural schematic diagram of the second side (bottom) of the attachment part with a second filtering structure according to an embodiment of the present application.

[0036] Fig. 11 is a top view of Fig. 10.

[0037] Fig. 12 is a sectional view of a dry powder bag according to another embodiment of the present application.

[0038] Reference signs: 100, attachment part; 11, liquid inlet channel; 111, first liquid inlet part; 112, second liquid inlet part; 113, third liquid inlet part; 12, liquid outlet channel; 121, liquid outlet; 122, first liquid outlet part; 123, second liquid outlet part; 124, third liquid outlet part; 130, hollow cylinder; 140, cover; 150, filtering structure; 151, bottom plate; 152, filtering aperture; 160, handle; 170, mounting plate; 180, mounting space; 13, liquid outlet pipe; 14, intermediate connecting part; 15, filter; 200, bag body; 210, powder filling opening. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] As shown in Figs. 1 to 12, the present application provides a dry powder bag, which comprises an attachment part 100 and a bag body 200.

[0041] The attachment part 100 is provided with a liquid inlet channel 11 and a liquid outlet channel 12 for connecting with a dialysis machine.

[0042] The bag body 200 is used for containing hemodialysis dry powder. The bag body 200 is a hollow structure with both ends open. One end opening forms a connecting opening, which is fixedly connected with the attachment part 100 by heat sealing or adhesion. The other end opening of the bag body 200 forms a powder filling opening 210, which is used for filling hemodialysis dry powder into the bag body 200. The side port of the liquid inlet channel 11 and the side port of the liquid outlet channel 12 are both located inside the bag body 200.

[0043] When powder filling is needed, hemodialysis dry powder is filled into the bag body 200 through the powder filling opening 210. After powder filling is completed, the powder filling opening 210 can be sealed by heat sealing or heat melting, so as to ensure the sealing of the bag body 200.

[0044] When blood dialysis is needed, the dry powder bag is connected with a dialysis machine for use. Liquid medium for dissolving the dry powder for blood dialysis flows into the bag 200 through the liquid inlet channel 11 to dissolve the dry powder for blood dialysis to form dialysate, and the dialysate flows out through the liquid outlet channel 12 and flows into the dialysis machine for blood dialysis.

[0045] It should be noted that the liquid medium can be water or other medium, which is not limited herein.

[0046] In the related art, one end of the bag 200 is sealingly connected to the attachment portion 100. The one-side port of the powder filling groove, the one-side port of the liquid inlet channel 11 and the one-side port of the liquid outlet channel 12 of the attachment portion 100 are all located in the bag 200. The dry powder for blood dialysis is filled into the bag 200 through the powder filling groove, liquid is introduced through the liquid inlet channel 11, and liquid is discharged through the liquid outlet channel 12. In this way, the total cross-sectional area of the one-side port of the powder filling groove, the one-side port of the liquid inlet channel 11 and the one-side port of the liquid outlet channel 12 needs to be smaller than the cross-sectional area of the bag 200, that is, in the related art, the cross-sectional area of the structure for powder filling (i.e. the powder filling groove) is smaller than the cross-sectional area of the bag 200, and the size of the powder filling groove is small, resulting in low powder filling efficiency.

[0047] In the embodiment of the present application, the bag 200 is a hollow structure with both ends open, the connecting opening of the bag 200 is sealingly connected to the attachment portion 100, and the other end of the bag 200 forms a powder filling opening 210, which is used to fill the dry powder for blood dialysis into the bag 200. That is, in the dry powder bag of the embodiment of the present application, the cross-sectional area of the structure for powder filling (i.e. the powder filling opening 210) is equal to the cross-sectional area of the bag 200, which increases the cross-sectional area of the powder filling structure compared with the related art, thereby improving the powder filling efficiency.

[0048] In addition, the embodiment of the present application does not need to open a special powder filling groove, and the structure is simpler. After the powder filling is completed, the powder filling groove does not need to be sealed. The related art needs to seal the end of the bag 200 away from the attachment portion 100, therefore, the embodiment of the present application reduces the production steps of sealing the powder filling groove compared with the related art, thereby reducing the production cost. It can be seen that the dry powder bag provided by the embodiment of the present application can solve the problems in the related art, such as opening a special powder filling groove on the attachment portion of the dry powder bag, low powder filling efficiency, complex structure, and the need to seal the powder filling groove after the powder filling is completed, which increases the production process and leads to increased production cost.

[0049] It should be noted that the cross-sectional area of the structure for powder filling (the powder filling groove in the related art and the powder filling opening 210 in the present application) refers to the area of the cross section perpendicular to the filling direction of the dry powder for blood dialysis during the powder filling process.

[0050] In order to adapt to the size of the dialysis machine and the size of the bag 200, the intermediate connecting portion 14 can be arranged between the liquid inlet channel 11 and the liquid outlet channel 12, that is, the liquid inlet channel 11 and the liquid outlet channel 12 are respectively arranged on two sides of the intermediate connecting portion 14.

[0051] In an optional embodiment, the intermediate connecting portion 14 can be a solid structure.

[0052] In a preferred embodiment, the intermediate connecting portion 14 can include a hollow cylinder 130, and the hollow cylinder 130 can be sealed at one end or both ends. For example, referring again to FIGS. 4 and 6, the inside of the hollow cylinder 130 can be provided with a cover 140, and the cover 140 is used to seal one end of the hollow cylinder 130, so as to prevent external impurities from entering the inside of the bag 200 through the hollow cylinder 130 and polluting the hemodialysis dry powder in the bag 200. Such a structure is beneficial to saving the material cost of the connecting portion 100, reducing the weight of the connecting portion 100, and facilitating the lightweight design of the dry powder bag.

[0053] The connection mode of the hollow cylinder 130 and the cover 140 can be various. Optionally, the hollow cylinder 130 and the cover 140 can be fixedly connected through bonding, hot melting connection or the like. Optionally, the hollow cylinder 130 and the cover 140 can be an integrated structure processed through an integral molding process, so as to ensure the connection sealing of the hollow cylinder 130 and the cover 140, and also to reduce the assembly steps and the assembly cost.

[0054] In a further technical solution, the connecting portion 100 can be an integrated structure processed through injection molding or the like, so as to reduce the assembly steps and the assembly cost of the connecting portion 100.

[0055] The liquid medium for dissolving the hemodialysis dry powder is usually water, and impurities can be easily contained in the water. If the water directly flows into the bag 200 to dissolve the hemodialysis dry powder and prepare the dialysis solution, there can be problems of affecting the dissolution effect and the preparation quality.

[0056] Therefore, in the embodiment of the present application, the part of the liquid inlet channel 11 located inside the bag 200 can have a filter structure 150. When the liquid medium flows into the liquid inlet channel 11 and then flows out through the filter structure 150 to enter the bag 200, the liquid medium is filtered, so as to ensure the dissolution effect and the preparation quality.

[0057] The structure of the filter structure 150 can be various. In an optional embodiment, the filter structure 150 can be a filter screen, and the filter screen is fixed to the side port of the liquid inlet channel 11 located inside the bag 200, so as to filter the liquid medium.

[0058] The filter structure 150 has various structures. In an optional embodiment, the liquid inlet channel 11 at one side port inside the bag body 200 can be connected with the bottom plate 151 and blocked by the bottom plate 151. The sidewall of the liquid inlet channel 11 inside the bag body 200 can be provided with filter apertures 152 for allowing liquid to flow into the bag body 200 and filtering the liquid. The bottom plate 151, the sidewall of the liquid inlet channel 11 provided with the filter apertures 152, and the filter apertures 152 form the filter structure 150.

[0059] During liquid inlet, the liquid medium flows into the liquid inlet channel 11 and then flows out through the filter apertures 152 to enter the bag body 200, so that the filtering of the liquid medium is realized during the liquid inlet process, the solid particles and impurities in the liquid medium are effectively filtered, and the purity of the liquid medium is improved. This is especially suitable for filtering water used for dissolving hemodialysis dry powder, so as to ensure the purity and preparation quality of the dialysis solution prepared synchronously during hemodialysis.

[0060] Meanwhile, the filter apertures 152 are directly provided on the sidewall of the liquid inlet channel 11, without the need of additional filter screen or filter element. Compared with the filter screen and filter element, the filter apertures 152 have high structural strength, strong liquid impact resistance, and high durability, and are not prone to deformation. In addition, the sidewall of the liquid inlet channel 11 assists in forming the filter structure 150, so that the liquid inlet channel 11 provides a flow channel for the liquid medium and also realizes the filtering of the liquid, thereby achieving the effect of one thing serving two purposes and saving cost.

[0061] In addition, the filter apertures 152 are provided on the sidewall of the liquid inlet channel 11, so that the liquid medium entering the liquid inlet channel 11 flows out from the sidewall of the liquid inlet channel 11, and the intercepted impurities are just accumulated on the bottom plate 151. Compared with the technical solution in which the filter apertures 152 are provided on the bottom plate 151 and the liquid medium directly impacts the bottom plate 151 to be filtered after entering the liquid inlet channel 11, the embodiment can alleviate the problem of impurities being flushed into the filter apertures 152, alleviate the problem of the filter apertures 152 being blocked to affect the liquid inlet flow rate, and more effectively separate the impurities, thereby enhancing the filtering effect.

[0062] The connection mode of the bottom plate 151 and the liquid inlet channel 11 can be various. In an optional embodiment, the bottom plate 151 and the liquid inlet channel 11 can be fixedly connected through bonding, hot melting processing, or the like. In an optional embodiment, the bottom plate 151 and the liquid inlet channel 11 can be an integrated structure processed through an integral molding process. In this structure, the bottom plate 151 and the liquid inlet channel 11 are integrally molded, without the need of installing the bottom plate 151 to the liquid inlet channel 11, thereby simplifying the processing and manufacturing process, saving cost, and avoiding the loss of the bottom plate 151.

[0063] The filter structure 150 has various structures. The liquid inlet channel 11 has an end for communicating with the dialysis machine and an end for communicating with the bag body 200. In an alternative embodiment, the end of the liquid inlet channel 11 for communicating with the bag body 200 is provided with a mounting plate 170, the mounting plate 170 and the inner wall of the end of the liquid inlet channel 11 for communicating with the bag body 200 form a mounting space 180, the mounting plate 170 is provided with a through hole, the filter structure 150 is arranged on the mounting plate 170 and located in the mounting space 180, that is, the filter structure 150 is located inside the liquid inlet channel 11, the liquid inlet end of the filter structure 150 communicates with the through hole, and the filter structure 150 is provided with filter pores 152 for allowing liquid to flow into the bag body 200 and filtering the liquid.

[0064] In this structure, the filter structure 150 is located inside the liquid inlet channel 11, and the liquid inlet channel 11 forming the mounting space 180 can protect the filter structure 150, avoiding the problem that the filter structure 150 protruding outside the liquid inlet channel 11 is accidentally damaged by external force during transportation or installation due to the relatively weak strength of the filter structure 150.

[0065] In addition, the bag body 200 is generally made of soft material, and the water filtered by the filter structure 150 may produce noise when hitting the bag body 200. In the present embodiment, the filter structure 150 is located inside the liquid inlet channel 11, which can avoid the problem that the water filtered by the filter structure 150 hits the bag body 200 when the filter structure 150 and the liquid inlet channel 11 are located on the same vertical plane and at the lower part of the liquid inlet channel 11. In the present embodiment, the filter structure 150 is located inside the liquid inlet channel 11, so that the liquid filtered by the filter structure 150 hits the inner wall of the liquid inlet channel 11, which is made of hard material and is not easy to produce noise, thereby alleviating the problem of noise during the configuration of the dialysis solution.

[0066] The liquid inlet channel 11, the mounting plate 170 and the filter structure 150 can be connected in various ways. Alternatively, the mounting plate 170 can be connected to the inner wall of the liquid inlet channel 11 by adhesion or heat fusion connection, and the filter structure 150 can be connected to the mounting plate 170 by adhesion or heat fusion connection. Alternatively, the liquid inlet channel 11, the mounting plate 170 and the filter structure 150 can be an integrated structure processed by an integrated molding process. In this structure, there is no need to install the mounting plate 170 to the liquid inlet channel 11, and there is no need to install the filter structure 150 to the mounting plate 170, which simplifies the processing and manufacturing process, saves costs, and eliminates the risk of loss of the mounting plate 170 and the filter structure 150.

[0067] The structure of the filtering aperture 152 can be various. In an alternative embodiment, the filtering aperture 152 can be in a plurality, and the filtering aperture 152 can be in a mesh shape.

[0068] In another alternative embodiment, the filtering aperture 152 can be in a plurality, and at least part of the filtering aperture 152 can be in a filtering slit in a strip shape. The filtering aperture 152 in a strip slit structure can effectively filter and is not easy to be blocked, and can increase the liquid flow rate on the basis of ensuring filtering. Of course, all of the filtering aperture 152 can be in a filtering slit, or part of the filtering aperture 152 can be in a filtering slit, and the other part of the filtering aperture 152 can be in a mesh shape.

[0069] The plurality of filtering apertures 152 can be arranged along the circumferential direction of the filtering structure 150 and extend along the axial direction of the filtering structure 150. In the axial direction, each filtering aperture 152 can be an integral slit, or can include a plurality of slit segments arranged along the axial direction.

[0070] In a further technical solution, a strip-shaped hole is provided at the position of the filtering slit, and along the wall thickness direction of the filtering structure 150, the strip-shaped hole can be a tapered hole with a flared or tapered opening, and the tapered opening of the strip-shaped hole forms the filtering slit.

[0071] In the embodiment in which the filtering aperture 152 is provided in the side wall of the liquid inlet channel 11, the flared and tapered openings of the strip-shaped hole can be located on one of the outer and inner tube walls of the liquid inlet channel 11, and the tapered opening of the strip-shaped hole forms the filtering slit. In this structure, the filtering effect of the filtering slit can be ensured, and the liquid flow rate can be increased.

[0072] In the embodiment in which the filtering structure 150 is located inside the liquid inlet channel 11, the flared and tapered openings of the strip-shaped hole can be located on the outer and inner walls of the filtering structure 150. For example, the flared and tapered openings can be located on one of the outer and inner walls of the filtering structure 150, and the tapered opening of the strip-shaped hole forms the filtering slit. In this structure, the filtering effect of the filtering slit can be ensured, and the liquid flow rate can be increased.

[0073] Optionally, the cross section of the strip-shaped hole can be V-shaped, for example, the flared and tapered openings are located at the two ends of the strip-shaped hole. The cross section of the strip-shaped hole can also be X-shaped, for example, the openings at the two ends are flared, and the tapered opening is located between the two ends, for example, in the middle region.

[0074] The liquid outlet channel 12 is located at one side port inside the bag body 200 to form a liquid outlet 121. Referring to FIG. 12, in order to ensure that the dialysate at the end where the powder loading opening 210 is located can smoothly flow out through the liquid outlet channel 12, the dry powder bag can further include a liquid outlet pipe. The first end of the liquid outlet pipe is connected to the liquid outlet 121, and the other end of the liquid outlet pipe extends to the end where the powder loading opening 210 is located.

[0075] In order to ensure that the hemodialysis dry powder in the bag body 200 is saturatedly dissolved in the liquid medium to form a high-concentration dialysate, the hemodialysis dry powder in the bag body 200 can be excessively arranged. Therefore, the liquid outlet pipe can be provided with a filter 15, and the filter 15 is used to filter the dialysate to intercept the undissolved dry powder.

[0076] Optionally, the filter 15 can be a gauze. Optionally, the filter 15 can be processed by sintering. Optionally, the filter 15 can be a plastic material, which can be integrally formed by injection molding, or a metal material, which can be integrally formed by metal processing. Optionally, the filter 15 can be a cylinder with an open end, and a filter mesh hole is formed in the bottom wall opposite to the open end. The cylinder is sleeved on the liquid outlet, and the filter mesh hole is used for filtering.

[0077] In the embodiment of the present application, the attachment part 100 can have a handle 160, which facilitates the holding of the attachment part 100.

[0078] In the embodiment of the present application, the liquid inlet channel 11 can include a first liquid inlet part 111, a second liquid inlet part 112 and a third liquid inlet part 113 which are sequentially communicated. The first liquid inlet part 111 is used to connect a dialysis machine, and the third liquid inlet part 113 is communicated with the filter structure 150. The extension directions of the first liquid inlet part 111, the third liquid inlet part 113 and the filter structure 150 are parallel, and the extension direction of the second liquid inlet part 112 is perpendicular to the first liquid inlet part 111 and the third liquid inlet part 113.

[0079] The liquid outlet channel 12 can include a liquid outlet 121, a first liquid outlet part 122, a second liquid outlet part 123 and a third liquid outlet part 124 which are sequentially communicated. The extension directions of the liquid outlet 121, the first liquid outlet part 122 and the third liquid outlet part 124 are parallel, and the extension direction of the second liquid outlet part 123 is perpendicular to the extension directions of the first liquid outlet part 122 and the third liquid outlet part 124.

[0080] In order to ensure the sealing of the dry powder bag, the other port of the first liquid inlet part 111 and the other port of the third liquid outlet part 124 can also be respectively provided with a sealing structure. The sealing structure can be connected to the other port of the first liquid inlet part 111 and the other port of the third liquid outlet part 124 in a removable manner (for example, can be pierced, torn or pulled off, etc. when connected to the dialysis machine later), so as to ensure the sealing of the liquid inlet channel 11 and the liquid outlet channel 12, thereby ensuring the sealing of the dry powder bag.

[0081] Based on the above dry powder bag, the embodiments of the present application also provide a dialysis system comprising the above dry powder bag. Since the dialysis system has the above dry powder bag, the beneficial effects of the dialysis system brought by the dry powder bag are described above, which will not be repeated here.

[0082] The above describes the basic principles of the present application in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects, etc. cannot be considered as the must-have of each embodiment of the present application. In addition, the above disclosed specific details are only for the purpose of example and understanding, and are not limited to the present application, which must be implemented by the above specific details.

[0083] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply the connection, arrangement, configuration shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, which mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0084] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0085] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the present application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0086] It should be understood that the limiting words "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for more clearly explaining the technical solutions, and cannot be used to limit the protection scope of the present application.

[0087] The above description is given for the purpose of illustration and description. Furthermore, this description does not intend to limit the embodiments of the present application to the forms disclosed herein. Although several example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A dry powder pouch, characterized in that, The application relates to a dialysis powder bag. The dialysis powder bag comprises: an attachment part (100) provided with an inlet channel (11) and an outlet channel (12) for connecting with a dialysis machine; 2. The dry powder pouch of claim 1, wherein, a bag body (200) in a hollow structure with both ends open, wherein one end opening forms a connecting opening, the connecting opening is in sealed connection with the attachment part (100), one side port of the inlet channel (11) and one side port of the outlet channel (12) are located inside the bag body (200), and the other end opening of the bag body (200) forms a powder filling opening (210) for filling hemodialysis dry powder into the bag body (200).

3. The dry powder pouch of claim 2, wherein, The part of the inlet channel (11) located inside the bag body (200) is provided with a filter structure (150).

4. The dry powder pouch of claim 3, wherein, The side port of the inlet channel (11) located inside the bag body (200) is connected with a bottom plate (151) and is blocked by the bottom plate (151), a filter aperture (152) for allowing liquid to flow into the bag body (200) and filtering the liquid is formed in the side wall of the inlet channel (11), the bottom plate (151), the side wall of the inlet channel (11) provided with the filter aperture (152) and the filter aperture (152) form the filter structure (150).

5. The dry powder pouch of claim 3 or 4, wherein, The bottom plate (151) and the inlet channel (11) are in an integrated structure.

6. The dry powder pouch of claim 5, wherein, The filter aperture (152) is in a plurality of forms, and at least part of the filter aperture (152) is in the form of a filter slit.

7. The dry powder pouch of any one of claims 2 to 6, wherein, A strip-shaped hole is formed at the position of the filter slit, along the wall thickness direction of the filter structure (150), the strip-shaped hole is a tapered hole with an expanding or contracting opening, and the contracting opening of the strip-shaped hole forms the filter slit.

8. The dry powder pouch of claim 7, wherein, An installation plate (170) is arranged in the end of the inlet channel (11) for communicating with the bag body (200), the installation plate (170) and the inner wall of the end of the inlet channel (11) for communicating with the bag body (200) enclose an installation space (180), the installation plate (170) is provided with a through hole, the filter structure (150) is arranged on the installation plate (170) and located in the installation space (180), and the liquid inlet end of the filter structure (150) communicates with the through hole.

9. The dry powder pouch according to any one of claims 1 to 8, characterized in that, The inlet channel (11), the installation plate (170) and the filter structure (150) are in an integrated structure.

10. The dry powder pouch of claim 9, wherein, The side port of the outlet channel (12) located inside the bag body (200) forms an outlet (121), the dry powder bag further comprises an outlet pipe (13), one end of the outlet pipe (13) is connected to the outlet (121), and the other end of the outlet pipe (13) extends to the end where the powder filling opening (210) is located.

11. The dry powder pouch of any one of claims 1 to 10, wherein, A filter element (15) is arranged on the inlet pipe (13). The inlet channel (11) comprises a first inlet part (111), the first inlet part (111) is used for connecting with a dialysis machine, and the end of the first inlet part (111) connected with the port of the dialysis machine is provided with a first sealing structure.

12. The dry powder pouch of any one of claims 1 to 11, wherein, The liquid outlet channel (12) comprises a liquid outlet port (121), a first liquid outlet part (122), a second liquid outlet part (123) and a third liquid outlet part (124) in sequence.

13. The dry powder pouch of any one of claims 1 to 12, wherein, An intermediate connecting part (14) is arranged between the liquid inlet channel (11) and the liquid outlet channel (12) to adapt the size of the dialysis machine and the size of the bag (200).

14. The dry powder pouch of claim 13, wherein, The intermediate connecting part (14) comprises a hollow cylinder (130) with a cover (140) arranged inside.

15. The dry powder pouch of claim 14, wherein, The hollow cylinder (130) and the cover (140) are integrally formed.

16. The dry powder pouch of any one of claims 1 to 15, wherein, The attachment part (100) is provided with a handle (160).

17. A dialysis system characterized by, A dry powder bag comprising any of the features of claims 1-16.

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