Hemodialysis cover, dry powder cylinder, dry powder bag, hemodialysis consumable and hemodialysis equipment

Abstract

The utility model discloses a hemodialysis cover, a dry powder cylinder, a dry powder bag, a hemodialysis consumable and hemodialysis equipment, and relates to the technical field of medical instruments. The cover for hemodialysis comprises a cover body and a liquid inlet hole formed in the cover body, a liquid inlet is formed in a first end hole opening of the liquid inlet hole, a second end hole opening of the liquid inlet hole is closed, at least a part of hole section of the liquid inlet hole is located on the inner side of the cover body, and a first filtering hole for allowing liquid to flow through and filtering the liquid is formed in the part of hole section. The cover for hemodialysis is provided with a filtering structure, the filtering effect is achieved while liquid is fed, and the purity of the liquid is improved; a filter screen or a filter element and other components do not need to be additionally arranged, the process of installing the filter screen or the filter element on the cover body is not needed, a corresponding structure for fixing the filter screen or the filter element is not needed to be arranged on the cover body, the machining and manufacturing process is simplified, and cost is saved. And compared with a filter screen, the structural strength is high, the liquid impact resistance is high, the problems of deformation and the like are not easily generated, and the durability is high.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and specifically relates to a lid for hemodialysis, a dry powder cylinder, a dry powder bag, hemodialysis consumables, and a hemodialysis device. Background Art

[0002] Hemodialysis is an effective means for treating renal failure. In hemodialysis equipment, filtration is involved in multiple components, such as components for configuring dialysate, mixing chambers on dialysis machines, etc. For example, the dialysate required for current hemodialysis is usually obtained by dissolving dry powder in a liquid such as water. The dry powder is stored in a dry powder cylinder, a dry powder bag, or a mixing chamber on a dialysis machine, etc. When hemodialysis is required, the liquid flows in through the liquid inlet, dissolves the dry powder to form dialysate, and after the dialysate flows out from the liquid outlet, it then flows into the dialysis cavity for hemodialysis.

[0003] The medium for dissolving the dry powder is usually water, and impurities are easily contained in the water. If the water directly flows into the cavity for storing the dry powder in components such as a dry powder cylinder to dissolve the dry powder and configure the dialysate, there may be problems affecting the dissolution effect and configuration quality. When the configured dialysate flows into the dialysis cavity, filtration can also be performed. The prior art usually installs a filtering component such as a filter mesh at the liquid inlet to filter the water, but the filtering component needs to be installed separately, and a structure for fixing the filtering component also needs to be provided correspondingly on the component where the liquid inlet is located, such as the lid of the dry powder cylinder or the bag body of the dry powder bag, increasing the manufacturing process and cost. Utility Model Content

[0004] In view of this, the embodiments of this application are committed to providing a lid for hemodialysis, which is provided with a liquid inlet and a self - contained filtering structure thereon, can filter the liquid while the liquid is flowing in, and is conducive to the integral molding of the lid for hemodialysis, being easy to manufacture, process, and use, so as to improve the purity of the liquid entering the cavity, be applicable to hemodialysis consumables such as dry powder cylinders or dry powder bags, or devices such as hemodialysis machines, to improve the quality of the dialysate used, and simplify the manufacturing process of the consumables.

[0005] This application provides a lid for hemodialysis on the one hand, including a lid body and a liquid inlet hole formed on the lid body. The first end orifice of the liquid inlet hole forms a liquid inlet, the second end orifice is closed, and at least part of the hole section of the liquid inlet hole is located inside the lid body, and a first filtering pore for the liquid to flow through and filter the liquid is provided on this part of the hole section.

[0006] In a possible implementation manner, a pipe body is provided on the lid body, the lumen of the pipe body forms the liquid inlet hole, the first end pipe orifice of the pipe body forms the liquid inlet, the second end pipe orifice is connected to a bottom plate, the bottom plate closes the second end pipe orifice, and the first filtering pore is provided on the pipe body and / or the bottom plate.

[0007] In a possible implementation, the tube body and the cover body are an integral structure; and / or, the tube body and the bottom plate are an integral structure.

[0008] In a possible implementation, there are multiple first filtering pores, and at least some of the first filtering pores are strip-shaped first filtering slits arranged circumferentially along the tube body.

[0009] In a possible implementation, a first strip-shaped hole is provided at the position where the first filtering slit is located. In the thickness direction of the tube body and / or the bottom plate, the first strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the first strip-shaped hole forms the first filtering slit.

[0010] In a possible implementation, the tube body includes a liquid inlet section protruding from the cover body, a connection section connected to a part of the cover body, and a filtering section located below a part of the cover body along the axial direction. The first filtering slit is located on the filtering section and extends axially.

[0011] On the other hand, the present application also provides a dry powder cylinder, including a cylinder body for containing dry powder and a blood dialysis lid covering the cylinder body, and the blood dialysis lid is the blood dialysis lid described in any one of the above.

[0012] In a possible implementation, a filtering member is provided at the liquid outlet of the cylinder body. The filtering member includes a ring body and a plate body covering one end of the ring body, and second filtering pores are provided on the ring body and / or the plate body.

[0013] In a possible implementation, the second filtering pores include second filtering slits located on the plate body and / or third filtering slits located on the ring body. The second filtering slits are arranged at intervals around the central area of the plate body and extend radially along the plate body; the third filtering slits are arranged circumferentially along the ring body and extend axially along the ring body.

[0014] In a possible implementation, a second strip-shaped hole is provided on the plate body. In the thickness direction of the plate body, the second strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the second strip-shaped hole forms the second filtering slit.

[0015] In a possible implementation, a third strip-shaped hole is provided on the ring body. In the thickness direction of the ring body, the third strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the third strip-shaped hole forms the third filtering slit.

[0016] In a possible implementation, the filter member covers the liquid outlet, the ring opening of the ring body that is not covered by the plate body faces the liquid outlet, and there is a gap between the outer wall of the ring body and the inner wall of the cylinder body.

[0017] The present application also provides a dry powder bag, including a bag body, a bag opening is provided on the bag body, and the blood dialysis lid as described in any one of the above is provided on the bag opening.

[0018] The present application also provides a blood dialysis consumable, including a consumable main body, a cavity for liquid to enter and exit is provided on the main body, and the blood dialysis lid as described in any one of the above is provided at the cavity opening of the cavity.

[0019] The present application also provides a blood dialysis device, including a machine body, a cavity for liquid to enter and exit is provided on the machine body, and the blood dialysis lid as described in any one of the above is provided at the cavity opening of the cavity.

[0020] The blood dialysis lid provided by the present application has a self - contained filtering structure, which can achieve a filtering effect while allowing liquid to enter, improving the purity of the liquid; at the same time, the filtering pores are directly opened on the blood dialysis lid or on the component forming the liquid inlet hole, without the need to additionally provide components such as a filter net or a filter element. The blood dialysis lid can be integrally formed, without the process of installing a filter net or a filter element onto the lid body, nor the need to provide a corresponding structure for fixing the filter net or the filter element on the lid body. This not only simplifies the processing and manufacturing process, is conducive to cost savings, but also eliminates potential risks such as loss or misalignment of the filter member; moreover, since the filtering pores are directly opened on the blood dialysis lid, it is equivalent to forming a filtering part at a local part of the blood dialysis lid. Compared with a filter net or a filter element, it has a greater structural strength, stronger resistance to liquid impact, is not prone to problems such as deformation, and has high durability. This blood dialysis lid can be applied to a dry powder cylinder to cover the cylinder body, can also be used as the lid of the bag body on a dry powder bag, and can also be applied to other blood dialysis consumables or blood dialysis devices to cover the cavity opening of the cavity. Description of the Drawings

[0021] Figure 1 The figure shows a first - angle schematic diagram of the blood dialysis lid in an embodiment of the present application;

[0022] Figure 2 The figure shows a second - angle schematic diagram of the blood dialysis lid in an embodiment of the present application;

[0023] Figure 3 The figure shows a third - angle schematic diagram of the blood dialysis lid in an embodiment of the present application;

[0024] Figure 4 is Figure 3 a partial enlarged view of;

[0025] Figure 5 The external schematic diagram of the dry powder cylinder in the embodiment of the present application is shown;

[0026] Figure 6 The internal schematic diagram of the dry powder cylinder in the embodiment of the present application is shown;

[0027] Figure 7 The schematic diagram of the filter element arranged at the liquid outlet in the embodiment of the present application is shown;

[0028] Figure 8 The first angle schematic diagram of the filter element in the embodiment of the present application is shown;

[0029] Figure 9 The second angle schematic diagram of the filter element in the embodiment of the present application is shown;

[0030] Figure 10 The third angle schematic diagram of the filter element in the embodiment of the present application is shown.

[0031] Figures 1-10 Among them:

[0032] 10. Lid for hemodialysis; 11. Cover body; 12. Tube body; 121. First filtering seam; 13. Plugging cover; 20. Cylinder body; 201. Liquid outlet; 30. Filter element; 31. Plate body; 311. Second filtering seam; 312. Reinforcing rib; 32. Ring body; 321. Third filtering seam; 322. Reinforcing rib plate. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] Please refer to the attached Figures 1-10, embodiments of the present application provide a lid 10 for hemodialysis. The lid 10 for hemodialysis includes a lid body 11 and a liquid inlet hole provided on the lid body 11. The liquid inlet hole can be arranged along the axial direction of the lid body 11 for liquid to flow through. In the present application, the liquid inlet hole has a structure with one end open and one end closed. The first end orifice of the liquid inlet hole forms a liquid inlet, and the second end orifice is closed. For example, the second end orifice is connected to a bottom plate, and the bottom plate covers and closes the second end orifice. And at least a part of the hole section of the liquid inlet hole is located inside the lid body 11 (i.e., the side of the lid body 11 facing the cylinder body 20). First filtering pores for liquid to flow through and filter the liquid are directly provided on this part of the hole section (such as the hole side wall and / or the hole bottom wall). Then, when liquid enters, the liquid flows into the liquid inlet hole and then flows out through the first filtering pores and enters the cylinder body 20 covered by the lid 10 for hemodialysis, realizing liquid filtration during the liquid inlet process.

[0035] With such a setting, the lid 10 for hemodialysis has a self - contained filtering structure, which can achieve a filtering effect while liquid enters, effectively filter impurities in the liquid, etc., improve the purity of the liquid, and is suitable for being installed on hemodialysis consumables such as a dry powder cylinder or a dry powder bag containing dry powder, suitable for filtering the water for dissolving dialysis dry powder, ensuring the purity and preparation quality of the dialysis solution configured synchronously during hemodialysis, and is also suitable for being installed on devices such as hemodialysis machines, which can filter the incoming dialysis solution and improve the quality of the dialysis solution (of course, with the different main bodies of the installed components, the cover plate structure or connection structure of the lid body can be adjusted adaptively); at the same time, the filtering pores are directly provided on the lid body 11 or on components forming the liquid inlet hole, such as a liquid inlet pipe provided on the lid body 11. There is no need to additionally set components such as a filter net or a filter element. The lid body 11 can be integrally formed, without the process of installing a filter net or a filter element on the lid body 11, nor the need to set a corresponding structure for fixing the filter net or the filter element on the lid body 11. This not only simplifies the processing and manufacturing process, helps save costs, but also the filtering component is not easy to deform and there is no hidden danger of loss, etc.; and the filtering pores are directly provided on the liquid inlet hole, and the area where the liquid inlet hole is located is equivalent to the filtering component. Compared with a filter net and a filter element, it has high structural strength, strong resistance to liquid impact, will not have problems such as deformation, and has high durability.

[0036] In some embodiments, a pipe body 12 is provided on the lid body 11. The lumen of the pipe body 12 forms the above - mentioned liquid inlet hole. The first end orifice of the pipe body 12 forms a liquid inlet, and the second end orifice is connected to a bottom plate. The bottom plate covers and closes the second end orifice. A part of the pipe section of the pipe body 12 is located inside the lid body 11. This part of the pipe section can be the pipe section provided with a bottom plate, and multiple first filtering pores are provided on this pipe section. And the first filtering pores are distributed on the pipe body 12 and / or the bottom plate.

[0037] Furthermore, the first filtering pore is provided on the tube body 12. After the liquid enters the liquid inlet hole, it is filtered out from the side wall of the liquid inlet hole, and the intercepted impurities can be gathered at the bottom of the liquid inlet hole. Compared with the filtering pores provided on the bottom wall of the liquid inlet hole, the liquid directly hits the bottom of the hole and is filtered after entering, which avoids the problem of impurities being flushed into the first filtering pores, avoids the first filtering pores being blocked and affecting the liquid inlet flow rate, and can also more effectively separate impurities and enhance the filtering effect.

[0038] In a preferred embodiment, the tube body 12 and the cover body 11 are an integrated structure, and the tube body 12 and the bottom plate may also be an integrated structure, which is equivalent to the filter component and the cover body 11 being integrally formed.

[0039] like Figure 1 As shown, in some embodiments, at least some of the first filter pores are in a slit structure. Some of the first filter pores may also be in a mesh shape, or, in a preferred embodiment, all of the first filter pores are first filter slits 121 in a strip shape. The first filter pores are in a slit structure instead of a mesh shape, which can not only effectively filter but also be less likely to be blocked, and can increase the flow rate of the liquid on the basis of ensuring filtration.

[0040] The first filter slits 121 may be arranged along the circumference of the tube body 12 and extend along the axial direction of the tube body 12. In the axial direction, each first filter slit 121 may be an integral slit or may include a plurality of slit segments arranged along the axial direction.

[0041] like Figure 1 As shown, the tube body 12 includes a liquid inlet section protruding from the cover body 11 and located on the outside of the cover body 11, a connecting section connected to a part of the cover body 11, and a filtering section located on the inside of the cover body 11. The filtering section protrudes from the inside of the part of the cover body 11 (referring to the inside of the local area on the cover body 11 connected to the tube body 12, and is not necessarily limited to being located on the inside of the entire cover body 11). The first filtering seam 121 is located on the filtering section and extends axially. In this way, the tube body 12 partially extends out of the outside of the cover body 11, which is convenient for connection with the pipeline. At the same time, part of the tube section of the tube body 12 protrudes from the inside of the cover body 11, which is convenient for rapid liquid inlet.

[0042] The first filter slit 121 may extend from one axial end of the filter section to the other axial end. After the liquid enters the tube body 12, it may quickly flow into the cylinder body 20 through the first filter slit 121.

[0043] In some embodiments, a first strip hole is provided at the position where the first filter seam 121 is located. The first strip hole is a tapered hole with expansion and contraction in the thickness direction of the area where the first strip hole is located (such as the thickness direction of the tube body 12 or the bottom plate), and the first filter seam 121 is formed by the contraction of the first strip hole.

[0044] like Figure 1 andFigure 4 As shown, a first strip-shaped hole is formed in the tube body 12. In the wall thickness direction of the tube body 12, the first strip-shaped hole is a tapered hole with a flared opening and a constricted opening, for example, one end opening is flared and the other end opening is constricted. The flared opening and the constricted opening of the first strip-shaped hole can be respectively located on the outer tube wall and the inner tube wall of the tube body 12. For example, the flared opening is located on one of the outer tube wall and the inner tube wall of the tube body 12, and the constricted opening is located on the other wall of the tube body 12 opposite to the wall surface where the flared opening is located. The constricted opening of the first strip-shaped hole forms a first filter slit 121. With such a setting, both the filtering effect of the first filter slit 121 can be ensured and the liquid outflow rate can be increased.

[0045] The cross-section of the first strip-shaped hole can be V-shaped, for example, the flared opening and the constricted opening are respectively located at both ends of the hole. The cross-section of the first strip-shaped hole can also be X-shaped, for example, both ends of the hole are flared openings, and the constricted opening is located between both ends of the hole, such as in the middle region.

[0046] Such as Figure 1 As shown, in a specific embodiment, the cover body 11 includes a base portion, a cover edge portion located outside the base portion, a recessed portion located inside the base portion, and a liquid inlet portion located inside the recessed portion. The cover edge portion, the base portion, and the recessed portion are all annular and are arranged in sequence from outside to inside in the radial direction. The liquid inlet portion is located in the inner ring of the recessed portion and is flush or substantially flush with the base portion. The cross-section of the recessed portion is U-shaped or U-shaped-like. The tube body 12 is arranged in the liquid inlet portion, its liquid inlet section is located outside the liquid inlet portion, the connection section is connected to the liquid inlet portion, and the filtering section is located inside the liquid inlet portion and has a gap with the outer side wall of the recessed portion.

[0047] Reinforcing ribs can be arranged between the outer wall of the filtering section and the outer side wall of the recessed portion. One side of the reinforcing rib is connected to the recessed portion and the other side is connected to the filtering section.

[0048] The blood dialysis lid 10 further includes a plugging lid 13 for plugging the tube body 12. In some embodiments, the plugging lid 13 not only includes a flat plate and a lid ring, but also includes a plug core located inside the lid ring and having a gap with the lid ring. The gap between the plug core and the lid ring is a space for inserting the tube body 12. When the plugging lid 13 is closed on the tube body 12, the lid ring is located outside the tube body 12, and the plug core is inserted into the lumen of the tube body 12.

[0049] The embodiment of the present application also provides a dry powder cylinder, which includes a cylinder body 20 for containing dry powder and a blood dialysis lid covered on the cylinder body 20. The blood dialysis lid is the blood dialysis lid 10 described in any one of the above embodiments. Then the dry powder cylinder has the beneficial effects described in the above embodiments, which will not be elaborated here in detail.

[0050] The dry powder cylinder is provided with a liquid inlet and also a liquid outlet 201. To ensure that the dialysis dry powder is saturatedly dissolved in the liquid to form a dialysis solution with a high concentration, an excessive amount of dry powder is provided in the cylinder. Therefore, a filter screen is usually provided at the liquid outlet 201 to filter the dialysis solution and intercept the undissolved dry powder. In the prior art, a gauze is usually provided at the liquid outlet 201 to filter the dialysis solution. The gauze has low strength and is prone to deformation under the impact of liquid flow for a long time, which affects the filtering effect. In addition, since the filtering holes of the gauze are all small mesh holes, there is a problem that it is easily blocked by undissolved but liquid-wetted dry powder lumps or mud, which affects the liquid outflow rate under the factors of liquid impact and deformation. In particular, the filtering components such as the gauze in the prior art are usually in the form of a thin sheet with a planar structure and are in the horizontal direction in the dry powder cylinder in the use state. The undissolved but liquid-wetted dry powder lumps or mud will accumulate concentratedly on the filtering surface of the filtering component under the action of gravity, making it easier to block the filtering holes.

[0051] In this application, a filter member 30 is provided at the liquid outlet 201 of the dry powder cylinder. The filter member 30 includes a ring body 32 and a plate body 31 covering one end of the ring body 32. Second filtering pores are formed on the ring body 32 and / or the plate body 31. The dialysis solution is filtered through the second filtering pores.

[0052] The filter member 30 can be made of plastic material and can be integrally formed by injection molding, or it can be made of metal material and integrally formed by metal processing. Compared with the gauze or the filter screen combined with a framework, it has a stable structure, high strength, strong impact resistance during liquid passing, long service life, can effectively ensure the filtering effect for a long time, can be integrally formed, is convenient for processing, is beneficial to a simple processing process, and saves processing costs. At the same time, the filter member 30 is not just a thin sheet, but is in the shape of a cover. Filtering pores can be formed on the plate body 31, and filtering pores can also be formed on its ring body 32, which can improve the liquid outflow rate. Moreover, the filtering pores on the ring body 32 are less affected by the liquid impact force and are not easily blocked. Therefore, the filter member 30 provided in this application has an implementation structure that can reduce the pore blockage rate. Further, due to the setting of the ring body 32 and the filtering pores on the ring body 32, even when some of the filtering pores on the plate body 31 are blocked, an effective liquid outflow rate can still be achieved. It not only solves the problem in the prior art that the gauze at the liquid outlet 201 of the dry powder cylinder is prone to deformation and affects the filtering effect, but also alleviates to at least a certain extent the problem that the pore holes are easily blocked by undissolved but liquid-wetted dry powder lumps or mud, which affects the liquid outflow rate.

[0053] In a further embodiment, the second filtering pores include second filtering slits 311 located on the plate body 31 and / or third filtering slits 321 located on the annular body 32. That is, at least part of the second filtering pores located on the plate body 31 are the strip-shaped second filtering slits 311, and / or at least part of the second filtering pores located on the annular body 32 are the strip-shaped third filtering slits 321. In a preferred implementation structure, all the second filtering pores can be strip-shaped filtering slits. Compared with small meshes, the filtering slits are strip-shaped, which can not only effectively filter but also are not easily blocked. Thus, the filter element 30 provided in the present application further effectively solves the problem that the liquid outflow rate is affected due to the fact that the gauze is easily blocked by undissolved but liquid-wetted dry powder masses or mud.

[0054] In some embodiments, on the plate body 31, the second filtering slits 311 are arranged at intervals along the circumferential direction of the plate body 31 around the center of the plate body 31 and extend along the radial direction of the plate body 31, as Figure 7 shown. Of course, in some other embodiments, the second filtering slits 311 can also have other arrangement structures, such as being arranged in an array, or arranged in the direction from one end to the other end of the plate body 31, etc. In a preferred embodiment, the second filtering slits 311 are arranged at intervals along the circumferential direction of the plate body 31 around the center of the plate body 31 and extend along the radial direction of the plate body 31. In this way, the overall structure of the plate body 31 is symmetrical and the strength is uniform, which is more conducive to long-term use.

[0055] On the annular body 32, the third filtering slits 321 are arranged along the circumferential direction of the annular body 32 and extend along the axial direction of the annular body 32. The third filtering slits 321 can be evenly distributed along the circumferential direction of the annular body 32.

[0056] As Figure 7 and Figure 10 shown, in some embodiments, a second strip-shaped hole is formed in the plate body 31. In the thickness direction of the plate body 31, the second strip-shaped hole is a tapered hole with a flared opening and a constricted opening, such as one end hole opening is flared and the other end hole opening is constricted. The flared opening and the constricted opening of the second strip-shaped hole can be respectively located on the inner plate surface and the outer plate surface of the plate body 31, that is, the flared opening is located on one of the inner plate surface and the outer plate surface of the plate body 31, and the constricted opening is located on the other outer plate surface of the plate body 31 opposite to the plate surface where the flared opening is located. The constricted opening of the second strip-shaped hole forms the first filtering slit 121. Such a setting can not only ensure the filtering effect of the second filtering slits 311 but also increase the liquid outflow rate.

[0057] Similarly, in some embodiments, as Figure 8As shown in the figure, a third strip-shaped hole is formed in the ring body 32. In the thickness direction of the ring body 32, the third strip-shaped hole is a tapered hole with a flared opening and a constricted opening, for example, one end of the hole opening is flared and the other end is constricted. Moreover, the flared opening and the constricted opening of the third strip-shaped hole can be respectively located on the outer ring wall and the inner ring wall of the ring body 32, that is, the flared opening is located on one of the outer ring wall and the outer ring wall of the ring body 32, and the constricted opening is located on the other wall surface of the ring body 32 opposite to the wall surface where the flared opening is located. The constricted opening of the third strip-shaped hole forms a third filter slit 321. With such a setting, not only can the filtering effect of the third filter slit 321 be ensured, but also the liquid outflow rate can be increased.

[0058] Specifically, the cross-section of the first strip-shaped hole and / or the cross-section of the second strip-shaped hole can be V-shaped, for example, the flared opening and the constricted opening are respectively located at both ends of the hole; alternatively, the cross-section of the first strip-shaped hole and / or the second strip-shaped hole can also be X-shaped, for example, the hole openings at both ends are flared, and the constricted opening is located between the two ends of the hole, such as in the middle region.

[0059] To further enhance the structural strength of the filter element 30, a reinforcing rib structure can be provided on the filter element 30. For example, in some embodiments, a protrusion protruding toward the ring body 32 is provided in the central region of the plate body 31, and reinforcing ribs 312 protruding from the inner plate surface of the plate body 31 are distributed around the protrusion. The reinforcing ribs 312 extend along the radial direction of the plate body 31 and are strip-shaped.

[0060] Reinforcing rib plates 322 arranged circumferentially and extending axially can also be provided on the ring body 32. The side portions of the reinforcing rib plates 322 are connected to the ring body 32, and the bottom portions are connected to the plate body 31. In the axial direction of the ring body 32 and along the direction gradually approaching the plate body 31, the plate width of the reinforcing rib plates 322 gradually increases.

[0061] One end of the ring body 32 is provided with a plate body 31, and the other end is provided with an outer edge, and a connecting structure for being arranged in the cylinder body 20 is provided on the outer edge. In this way, the filter element 30 can be conveniently connected in the cylinder body 20 of the dry powder cylinder and cover or lay on the liquid outlet 201.

[0062] Such as Figure 6 As shown in the figure, in some embodiments, the filter element 30 is inverted and covers above the liquid outlet 201, and the opening of the ring body 32 not covered by the plate body 31 faces the liquid outlet 201. There is a distance between the outer ring wall of the ring body 32 of the filter element 30 and the inner wall of the cylinder body 20 for the liquid to flow through here to the third filter slit 321 for filtering and then flow out through the liquid outlet 201. With such a setting, compared with laying the filter element 30 inside the liquid outlet 201, the filter element 30 covers above the liquid outlet 201, which is convenient for connecting and disassembling with the cylinder body 20 and convenient for installing and replacing the filter element 30; at the same time, it is also convenient to have a distance for the liquid to flow through between the ring body 32 and the cylinder body 20, which is convenient for the liquid to flow smoothly and quickly through the third filter slit 321 and improves the liquid outflow rate.

[0063] An embodiment of the present application further provides a dry powder bag, which includes a bag body. The bag body has a bag mouth, and the bag mouth is sealed by a lid, and the lid is the lid 10 for hemodialysis described in any of the foregoing embodiments. Then, the dry powder bag has the beneficial effects described in the above embodiments, which will not be elaborated here in detail.

[0064] An embodiment of the present application further provides a hemodialysis consumable, which includes a consumable main body. A cavity for liquid to enter and exit is provided on the consumable main body. The cavity has a cavity opening, and the cavity opening is sealed by a lid, and the lid is the lid 10 for hemodialysis described in any of the foregoing embodiments. Then, the hemodialysis consumable has the beneficial effects described in the above embodiments, which will not be elaborated here in detail.

[0065] An embodiment of the present application further provides a hemodialysis device, which includes a machine body. A cavity for liquid to enter and exit is provided on the machine body. The cavity has a cavity opening, and the cavity opening is sealed by a lid, and the lid is the lid 10 for hemodialysis described in any of the foregoing embodiments. Then, the hemodialysis consumable has the beneficial effects described in the above embodiments, which will not be elaborated here in detail.

[0066] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and facilitating understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0067] The components and devices involved in the present application are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As those skilled in the art will recognize, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended words, meaning "including but not limited to", and can be used interchangeably with each other. The words "or" and "and" used here refer to the word "and / or", and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with each other.

[0068] It should also be noted that in the devices and equipment of the present application, each component can be disassembled and / or recombined. These disassembly and / or recombination should be regarded as equivalent solutions of the present application.

[0069] The above description of the disclosed aspects enables any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily 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 rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0070] It should be understood that the qualifiers "first", "second", and "third" used in the description of the embodiments of the present application are only for more clearly explaining the technical solutions and cannot be used to limit the protection scope of the present application.

[0071] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and subcombinations thereof. The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A lid for hemodialysis, characterized in that, It includes a cover body and a liquid inlet hole formed on the cover body. The first end orifice of the liquid inlet hole forms a liquid inlet, and the second end orifice is closed. At least part of the hole section of the liquid inlet hole is located inside the cover body, and a first filtering pore for liquid to flow through and filter the liquid is provided on this part of the hole section.

2. The lid for hemodialysis according to claim 1, characterized in that, A tube body is provided on the cover body. The lumen of the tube body forms the liquid inlet hole. The first end orifice of the tube body forms the liquid inlet, and the second end orifice is connected to a bottom plate. The bottom plate closes the second end orifice. The first filtering pore is provided on the tube body and / or the bottom plate.

3. The lid for hemodialysis according to claim 2, characterized in that, The tube body and the cover body are of an integral structure; and / or, the tube body and the bottom plate are of an integral structure.

4. The lid for hemodialysis according to claim 2, characterized in that, There are multiple first filtering pores, and at least part of the first filtering pores are first filtering slits in a strip shape.

5. The lid for hemodialysis according to claim 4, characterized in that, A first strip-shaped hole is provided at the position where the first filtering slit is located. In the thickness direction of the tube body and / or the bottom plate, the first strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the first strip-shaped hole forms the first filtering slit.

6. The lid for hemodialysis according to claim 4, wherein, The tube body includes an inlet section located outside the cover body, a connection section connected to a part of the cover body, and a filtering section located inside the cover body along the axial direction. The first filtering slit is located on the filtering section and extends along the axial direction.

7. A dry powder cylinder, characterized in that, It includes a cylinder body for containing dry powder and a blood dialysis lid covering the cylinder body. The blood dialysis lid is the blood dialysis lid according to any one of claims 1-6.

8. The dry powder cylinder according to claim 7, characterized in that, A filter element is provided at the liquid outlet of the cylinder body. The filter element includes a ring body and a plate body covering one end of the ring body. Second filtering pores are provided on the ring body and / or the plate body.

9. The dry powder cylinder according to claim 8, characterized in that, The second filtering pores include second filtering slits located on the plate body and / or third filtering slits located on the ring body. The second filtering slits are arranged at intervals around the central area of the plate body and extend in the radial direction of the plate body; the third filtering slits are arranged along the circumferential direction of the ring body and extend in the axial direction of the ring body.

10. The dry powder cylinder according to claim 9, wherein A second strip-shaped hole is provided on the plate body. In the thickness direction of the plate body, the second strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the second strip-shaped hole forms the second filtering slit.

11. The dry powder cylinder according to claim 9, characterized in that, A third strip-shaped hole is provided on the ring body. In the thickness direction of the ring body, the third strip-shaped hole is a tapered hole with a flared opening and a constricted opening, and the constricted opening of the third strip-shaped hole forms the third filtering slit.

12. The dry powder cylinder according to claim 8, characterized in that, The filter element covers the liquid outlet. The ring orifice of the ring body not covered by the plate body faces the liquid outlet, and there is a spacing between the outer wall of the ring body and the inner wall of the cylinder body.

13. A dry powder bag, characterized in that, It includes a bag body. A bag mouth is provided on the bag body, and the blood dialysis lid according to any one of claims 1-6 is provided on the bag mouth.

14. A hemodialysis consumable, characterized in that, It includes a consumable main body. A cavity for liquid to enter and exit is provided on the main body, and the blood dialysis lid according to any one of claims 1-6 is provided at the orifice of the cavity.

15. A hemodialysis device, characterized in that, It includes a machine body. A cavity for liquid to enter and exit is provided on the machine body, and the blood dialysis lid according to any one of claims 1-6 is provided at the orifice of the cavity.

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