Filtering part, dry powder cylinder, dry powder bag, hemodialysis consumable and hemodialysis equipment

Abstract

The utility model discloses a filter part, a dry powder cylinder, a dry powder bag, a hemodialysis consumable and hemodialysis equipment, and relates to the technical field of medical instruments. The filtering piece comprises a ring body and a filter element, wherein the ring body is in a ring shape with two open ends; the plate body is connected with the ring body and covers the opening in one end of the ring body; wherein at least the ring body is provided with filtering pores for liquid to flow through and filtering the liquid. The filtering part can be applied to the liquid outlet to filter dialysate, compared with a gauze element, a filter membrane with a framework or other filtering parts of plane structures, the filtering part can be of an integrated structure, the machining process is convenient and simple, the structure is stable, the strength is high, the impact resistance is high during liquid passing, the usability is long, and the filtering part is suitable for popularization and application. The filtering effect can be effectively ensured for a long time; and due to the arrangement of the ring body and the filtering holes in the ring body, blockage is not prone to occurring, the liquid outlet flow speed can be guaranteed, and the problems that the filtering effect is affected due to the fact that a gauze element is prone to deformation and the liquid outlet flow speed is affected due to the fact that a filtering component is prone to being blocked by powder mud are solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a filter element, a dry powder cartridge, a dry powder bag, a hemodialysis consumable, and a hemodialysis device. Background Art

[0002] Hemodialysis is an effective means of treating renal failure. In hemodialysis consumables and equipment, filtration is involved in many parts, such as parts for configuring dialysate, mixing chambers on dialyzers, etc. For example, the dialysate required for hemodialysis is usually obtained by dissolving dialysate dry powder in liquid such as water. In order to ensure that the dry powder is saturated in the liquid, the dry powder stored in the dry powder tube or dry powder bag will be set in excess. After the liquid flows in, the dry powder is dissolved to form a dialysate, and then flows out. Therefore, at least a filter component needs to be set at the liquid outlet of the dry powder tube or dry powder bag to intercept the undissolved residual dry powder or impurities. At present, a filter component such as a gauze is usually set at the liquid outlet to filter the dialysate. The strength of the gauze is low, and it is easy to deform under the impact of liquid flow for a long time, which affects the filtering effect; in addition, since the filter holes of the gauze are all fine meshes, under the factors of liquid impact and deformation, there is a problem that it is easy to be blocked by dry powder lumps or powder mud that are not dissolved but wetted by liquid, which affects the flow rate of the liquid. In particular, the filter components such as gauze in the prior art are usually in the form of a thin sheet with a planar structure, which is in a horizontal direction in the dry powder tube when in use. The undissolved dry powder lumps or powder mud wetted by the liquid will accumulate on the filter surface of the filter component under the action of gravity, which is more likely to clog the filter holes. Utility Model Content

[0003] In view of this, the embodiments of the present application are committed to providing a filter element, which can be integrally formed, has high strength, high deformation resistance, strong durability, and can increase the liquid outlet flow rate while ensuring the filtering effect. It is suitable for consumables and equipment in the field of hemodialysis, and can solve the problem in the prior art that the gauze at the liquid outlet of hemodialysis components or equipment such as dry powder cylinders is easily deformed, thereby affecting the filtering effect, and the gauze, filter membrane and other planar filter components (such as thin sheets) are easily blocked by undissolved but liquid-wet dry powder lumps or powder mud, thereby affecting the liquid outlet flow rate.

[0004] The present application provides a filter element, comprising: a ring body, which is in a ring shape with openings at both ends; a plate body, which is connected to the ring body and covers the opening at one end of the ring body; wherein at least the ring body is provided with filtering pores for liquid to flow through and filter the liquid.

[0005] In a possible implementation, the filtering pores include a first filtering slit that is located on the plate body and is in a strip shape, and / or a second filtering slit that is located on the ring body and is in a strip shape.

[0006] In a possible implementation manner, there are a plurality of first filtering slits, which are arranged at intervals around the central area of ​​the plate body and extend radially along the plate body.

[0007] In a possible implementation, a first strip hole is opened on the plate body. In the thickness direction of the plate body, the first strip hole is a tapered hole with an expanding opening and a shrinking opening. The shrinking opening of the first strip hole forms the first filter slit.

[0008] In a possible implementation manner, there are a plurality of second filtering slits, which are arranged along the circumference of the ring body and extend along the axial direction of the ring body.

[0009] In a possible implementation, a second strip hole is opened on the ring body. In the thickness direction of the ring body, the second strip hole is a tapered hole with an expanding opening and a shrinking opening. The shrinking opening of the second strip hole forms the second filtering slit.

[0010] In a possible implementation manner, cross-sections of the first strip-shaped hole and the second strip-shaped hole are V-shaped.

[0011] In a possible implementation manner, the plate body is provided with reinforcing ribs distributed along the circumferential direction and extending along the radial direction; and / or the ring body is provided with reinforcing ribs arranged along the circumferential direction and extending along the axial direction.

[0012] The present application also provides a dry powder cartridge, comprising a cartridge body for accommodating dry powder and a filter element as described above, wherein a liquid inlet and a liquid outlet are provided on the cartridge body, and the filter element is located at the liquid outlet.

[0013] In a possible implementation, the filter cover is on the liquid outlet, the opening of the ring body not covered by the plate body faces the liquid outlet, and there is a distance between the outer ring wall of the ring body and the inner wall of the cylinder.

[0014] An embodiment of the present application further provides a dry powder bag, comprising a bag body for containing dry powder and a filter as described in any one of the above items, wherein a liquid inlet and a liquid outlet are provided on the bag body, and the filter is located in the bag body.

[0015] An embodiment of the present application further provides a hemodialysis consumable, comprising a main body, wherein the main body is provided with a cavity for liquid to enter and exit, and the cavity is provided with a filter element as described in any one of the above items.

[0016] An embodiment of the present application further provides a hemodialysis device, comprising a body, wherein the body is provided with a cavity for liquid to enter and exit, and the cavity is provided with a filter element as described in any one of the above items.

[0017] The filter element provided in the present application can be applied to the liquid outlet of hemodialysis consumables such as dry powder tubes and dry powder bags or hemodialysis machines and other equipment to filter the dialysate. Compared with the gauze, the filter membrane combined with the skeleton and other filter components that are also in a planar structure in the prior art, the filter element can be an integrated structure, such as one-piece molding by injection molding or one-piece molding by metal processing, which is not only easy to process, but also conducive to simple processing technology and saving processing costs, and the structure is stable, strong, strong impact resistance during liquid flow, high deformation resistance, long usability, and can effectively guarantee the filtering effect for a long time. At the same time, the filter element is not a thin sheet, but a cover-shaped, and the plate body can have filtering pores, and the ring body must be provided with filtering pores, which can increase the liquid flow rate, and the filtering pores on the ring body are less affected by the impact of the liquid, and will not accumulate mud, powder blocks, etc., and are not easy to be blocked, effectively ensuring the liquid flow rate. Therefore, the filter element provided by the present application reduces the pore blockage rate and can still have an effective liquid outlet flow rate even when some of the filter pores on the plate body are blocked. It not only solves the problem in the prior art that the gauze at the liquid outlet of hemodialysis consumables or equipment such as dry powder cylinders and dry powder bags is easily deformed, thereby affecting the filtering effect, but also at least to a certain extent alleviates the problem that the gauze and other planar structure filter components are easily blocked by undissolved but liquid-soaked dry powder lumps or powder mud, thereby affecting the liquid outlet flow rate.

[0018] In a further embodiment, the filter pores provided on the filter element of the present application are strip-shaped filter slits, which can not only filter effectively but also are not easily clogged compared to fine meshes, thereby further effectively solving the problem that filter components with planar structures such as gauze are easily clogged by dry powder lumps or powder mud that are not dissolved but moistened by liquid, thereby affecting the liquid flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a first axonometric angle schematic diagram of the filter element in the embodiment of the present application;

[0020] Figure 2 The figure shows a second isometric angle schematic diagram of the filter element in the embodiment of the present application;

[0021] Figure 3 Shown is a top view of the filter element in the embodiment of the present application;

[0022] Figure 4 Shown is a side view of the filter element in the embodiment of the present application;

[0023] Figure 5 Shown is a bottom view of the filter element in the embodiment of the present application;

[0024] Figure 6 Shown is a schematic diagram of the filter element in the dry powder cartridge in an embodiment of the present application.

[0025] Figure 1-6 middle:

[0026] 1. Plate body; 11. First filter slit; 12. Reinforcement ribs; 2. Ring body; 21. Second filter slit; 22. Reinforcement ribs; 3. Cylinder body. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In actual use, hemodialysis involves a variety of consumables and equipment. Dry powder bags and dry powder cylinders are hemodialysis consumables, and hemodialysis machines are dialysis equipment. During the dialysis process, the dialysate is configured and filtered simultaneously. If the filter components such as the gauze, filter membrane, and filter disc at the outlet are deformed and affect the filtration effect, or if some of the filter holes are blocked by powder mud and affect the outlet flow rate, it is easy to affect the normal dialysis operation and dialysis effect of the dialysis equipment.

[0029] To improve this problem, the present application is dedicated to providing a filter element that can be applied to the liquid outlet, aiming to improve the strength, deformation resistance and durability of the filter element, and to increase the liquid outlet flow rate while ensuring the filtering effect.

[0030] Please refer to the attached Figure 1-6 , an embodiment of the present application provides a filter element, which includes a ring body 2 and a plate body 1, wherein the plate body 1 is connected to the ring body 2 and covers an opening at one end of the ring body 2. It can also be said that the filter element is in the shape of a lid as a whole, the ring body 2 forms the side wall of the lid, and the plate body 1 forms the bottom wall of the lid. At the same time, at least the ring body 2 is provided with a filtering pore. Of course, in a preferred embodiment, both the ring body 2 and the plate body 1 are provided with a filtering pore.

[0031] The filter element can replace the filter components of the prior art and be applied to hemodialysis consumables such as dry powder tubes and dry powder bags or hemodialysis machines, and can be set at the liquid outlet to filter the dialysate. The filter element can be an integrated structure, such as a plastic material that can be integrally formed by injection molding, or a metal material that can be integrally formed by metal processing. Compared with gauze, filter membranes with skeletons, or filter components with planar structures such as filter sheets, the filter element has a stable structure, high strength, strong impact resistance when passing liquid, strong deformation resistance, long service life, and can effectively guarantee the filtering effect for a long time. It can be integrally formed, easy to process, and conducive to simple processing technology and saving processing costs; at the same time, the filter element is not a flat sheet, but a cover-shaped, with a ring body 2, and the filtering pores on the ring body 2 are less affected by the impact of the liquid, and extend in the vertical direction during use, and will not accumulate undissolved but wet dry powder lumps or powder mud, etc., and are not easy to be blocked, so the filter element provided by the present application reduces The pore blockage rate can effectively ensure the liquid flow rate. In addition, filtering pores can be opened on the plate body 1 and the ring body 2, which can increase the liquid flow rate. Due to the setting of the filtering pores on the ring body 2 and the ring body 2, even when some of the filtering pores on the plate body are blocked, it can still have an effective liquid flow rate. It not only solves the problem of the hemodialysis consumables or equipment such as dry powder cylinders in the prior art that the gauze at the liquid outlet is easily deformed and affects the filtering effect, but also alleviates the problem of the gauze, filter membrane and other planar structure filtering components (such as filter plates, etc.) being easily blocked by undissolved but liquid-wet dry powder lumps or powder mud, thereby affecting the liquid flow rate.

[0032] In a further embodiment, filtering pores are provided not only on the ring body 2 but also on the plate body 1; and at least part of the filtering pores on the plate body 1 are first filtering slits 11 in strip shape, and / or at least part of the filtering pores on the ring body 2 are second filtering slits 21 in strip shape. In a preferred implementation structure, all filtering pores on the plate body 1 and the ring body 2 can be filtering slits in strip shape. Compared with fine meshes or holes, the filtering slits are strip-shaped, which can not only filter effectively but also are not easy to be blocked. In this way, the filter element provided by the present application further effectively solves the problem that the fine meshes or holes on the existing filtering components are easily blocked by dry powder lumps or powder mud that are not dissolved but wetted by liquid, thereby affecting the liquid outlet flow rate.

[0033] In some embodiments, on the plate body 1, the first filter slits 11 are arranged at intervals along the circumference of the plate body 1 around the center of the plate body 1 and extend along the radial direction of the plate body 1, such as Figure 1Of course, in some other embodiments, the first filter slits 11 may also be arranged in other structures, such as being distributed in an array, or arranged from one end of the plate body 1 to the other end, etc. In a preferred embodiment, the first filter slits 11 are arranged around the center of the plate body 1 at intervals along the circumference of the plate body 1 and extend along the radial direction of the plate body 1, so that the overall structure of the plate body 1 is symmetrical and has uniform strength, which is more conducive to long-term use.

[0034] On the ring body 2, the second filter slits 21 are arranged along the circumference of the ring body 2 and extend along the axial direction of the ring body 2. The second filter slits 21 can be evenly distributed along the circumference of the ring body 2.

[0035] like Figure 2 and Figure 5 As shown, in some embodiments, a first strip hole is provided on the plate body 1. In the thickness direction of the plate body 1, the first strip hole is a gradually shrinking hole with an expansion and a contraction, such as an expansion at one end and a contraction at the other end. The expansion and contraction of the first strip hole can be located on the inner plate surface and the outer plate surface of the plate body 1, respectively, that is, the expansion is located on one of the inner plate surface and the outer plate surface of the plate body 1, and the contraction is located on the other plate surface of the plate body 1 opposite to the plate surface where the expansion is located. The contraction of the first strip hole forms a first filter slit 11. Such a setting can not only ensure the filtering effect of the first filter slit 11, but also increase the liquid flow rate.

[0036] Similarly, in some embodiments, such as Figure 1 and Figure 4 As shown, the ring body 2 is provided with a second strip hole, and the second strip hole is a gradually shrinking hole with an expansion and a contraction in the thickness direction of the ring body 2, such as an expansion at one end and a contraction at the other end. The expansion and contraction of the second strip hole can be located on the outer ring wall and the inner ring wall of the ring body 2 respectively, that is, the expansion is located on one of the outer ring wall and the inner ring wall of the ring body 2, and the contraction is located on the other wall of the ring body 2 opposite to the wall where the expansion is located. Among them, the contraction of the second strip hole forms a second filter slit 21. Such a setting can not only ensure the filtering effect of the second filter slit 21, but also increase the flow rate of the liquid outflow.

[0037] Specifically, the cross-section of the first strip hole and / or the cross-section of the second strip hole may be V-shaped, such as the expansion opening and the reduction opening are respectively located at the two ends of the hole; or, the cross-section of the first strip hole and / or the second strip hole may also be X-shaped, such as the hole openings at both ends are expansion openings, and the reduction opening is located between the two ends of the hole, such as the middle area.

[0038] In order to further enhance the structural strength of the filter element, a reinforcing rib structure may be provided on the filter element. For example, in some embodiments, a reinforcing rib 12 is provided on the plate body 1. The reinforcing rib 12 may be located on the inner plate surface of the plate body 1 or on the outer plate surface of the plate body 1. For example, in a specific embodiment, a protrusion protruding toward one side of the ring body 2 is provided in the central area of ​​the plate body 1, and reinforcing ribs 12 protruding from the inner plate surface of the plate body 1 are distributed around the protrusion. The reinforcing rib 12 extends radially along the plate body 1 and is in a strip shape.

[0039] The ring body 2 may also be provided with reinforcing ribs 22 arranged circumferentially and extending axially, the side of the reinforcing ribs 22 being connected to the ring body 2, and the bottom being connected to the plate body 1. In the axial direction of the ring body 2, and in the direction gradually approaching the plate body 1, the plate width of the reinforcing ribs 22 gradually increases.

[0040] The plate body 1 is disposed at one end of the ring body 2 and an outer edge is disposed at the other end, and a connecting structure for being disposed in the dry powder cylinder is disposed on the outer edge. In this way, the filter element can be conveniently connected in the dry powder cylinder and covered or laid at the liquid outlet.

[0041] The embodiment of the present application further provides a dry powder cartridge, comprising a cylinder 3 for containing dry powder and a filter element disposed in the cylinder 3, wherein the filter element is a filter element as described in any of the above embodiments. The cylinder 3 is provided with a liquid inlet and a liquid outlet, and the filter element covers the liquid outlet to effectively filter the liquid. Therefore, the dry powder cartridge has the beneficial effects described in the above embodiments, which will not be described in detail one by one here.

[0042] The filter element covers the liquid outlet, which can be laid at the liquid outlet or covered by an inverted cover. Figure 6 As shown, in some embodiments, the filter element has an inverted cover over the liquid outlet, and the opening of the ring body 2 not covered by the plate body 1 faces the liquid outlet. There is a gap between the outer ring wall of the ring body 2 of the filter element and the inner wall of the cylinder 3, so that the liquid can flow from here to the second filter slit 21 for filtration, and then flow out through the liquid outlet. In this arrangement, compared with laying the filter element inside the liquid outlet, the filter element cover is over the liquid outlet, which is convenient for connection and disassembly with the cylinder 3, and for installation and replacement of the filter element; at the same time, it is also convenient to have a gap between the ring body 2 and the cylinder 3 for liquid to flow through, so that the liquid can flow smoothly and quickly through the second filter slit 21, thereby increasing the liquid outlet flow rate.

[0043] The embodiment of the present application also provides a dry powder bag, including a bag body for containing dry powder and a filter element disposed in the bag body, the filter element being the filter element described in any of the above embodiments. The bag body is provided with a liquid inlet and a liquid outlet, the filter element can be disposed at the liquid outlet, covering the liquid outlet to effectively filter the liquid. Therefore, the dry powder bag has the beneficial effects described in the above embodiments, which will not be described in detail one by one here.

[0044] The embodiment of the present application also provides a hemodialysis consumable, including a consumable body, a cavity for liquid inlet and outlet is provided on the consumable body, a liquid inlet and a liquid outlet are provided on the cavity, and a filter as described in any of the above embodiments is provided in the cavity. The filter can be arranged at the liquid outlet, covering the liquid outlet to effectively filter the liquid. Therefore, the hemodialysis consumable has the beneficial effects described in the above embodiments, which will not be described in detail one by one here.

[0045] The embodiments of the present application also provide a hemodialysis device, which may be a hemodialysis machine, comprising a body, a cavity such as a mixing chamber for liquid to enter and exit, a liquid inlet and a liquid outlet, and a filter as described in any of the above embodiments. The filter can be arranged at the liquid outlet of the cavity, covering the liquid outlet to effectively filter the liquid. Therefore, the hemodialysis device has the beneficial effects described in the above embodiments, which will not be described in detail one by one here.

[0046] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0047] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, 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 it.

[0048] It should also be noted that in the device and apparatus of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present application.

[0049] The above description of the disclosed aspects is provided to enable 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 may 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 widest scope consistent with the principles and novel features disclosed herein.

[0050] The above description has been given for the purpose 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 sub-combinations thereof.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A filter element, characterized in that: include: The ring body is in the shape of a ring with two ends open; A plate body connected to the ring body and covering an opening at one end of the ring body; Wherein, at least the ring body is provided with filtering pores for allowing liquid to flow through and filter the liquid.

2. The filter element according to claim 1, characterized in that The filtering pores include a first filtering slit in a strip shape and located on the plate body, and / or a second filtering slit in a strip shape and located on the ring body.

3. The filter element according to claim 2, characterized in that There are a plurality of first filtering slits, which are arranged at intervals around the central area of ​​the plate body and extend in the radial direction of the plate body.

4. The filter element according to claim 2, characterized in that The plate body is provided with a first strip hole, which is a tapered hole with an expanded opening and a contracted opening in the thickness direction of the plate body, and the contracted opening of the first strip hole forms the first filtering slit.

5. The filter element according to any one of claims 2 to 4, characterized in that: There are a plurality of second filtering slits, which are arranged along the circumference of the ring body and extend along the axial direction of the ring body.

6. The filter element according to any one of claims 2 to 4, characterized in that: The ring body is provided with a second strip hole. In the thickness direction of the ring body, the second strip hole is a tapered hole with an expanded opening and a contracted opening. The contracted opening of the second strip hole forms the second filtering slit.

7. The filter element according to claim 6, characterized in that The cross section of the first strip-shaped hole and / or the second strip-shaped hole is V-shaped.

8. The filter element according to claim 1, characterized in that The plate body is provided with reinforcing ribs distributed along the circumferential direction and extending along the radial direction; and / or the ring body is provided with reinforcing ribs arranged along the circumferential direction and extending along the axial direction.

9. A dry powder cartridge, characterized in that: It comprises a cylinder for accommodating dry powder and the filter element according to any one of claims 1 to 8, wherein a liquid inlet and a liquid outlet are provided on the cylinder, and the filter element is located at the liquid outlet.

10. The dry powder cartridge according to claim 9, characterized in that: The filter cover is on the liquid outlet, the opening of the ring body not covered by the plate body faces the liquid outlet, and there is a distance between the outer ring wall of the ring body and the inner wall of the cylinder.

11. A dry powder bag, characterized in that: The invention comprises a bag body for containing dry powder and the filter element according to any one of claims 1 to 8, wherein the bag body is provided with a liquid inlet and a liquid outlet, and the filter element is located in the bag body.

12. A hemodialysis consumable, characterized in that: It comprises a main body, wherein a cavity for liquid to enter and exit is arranged on the main body, and the filter element according to any one of claims 1 to 8 is arranged in the cavity.

13. A hemodialysis device, characterized in that: The invention comprises a body, wherein a cavity for liquid to enter and exit is arranged on the body, and the filter element according to any one of claims 1 to 8 is arranged in the cavity.

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