Hydrogel filtration device

Abstract

The utility model discloses a kind of hydrogel filtering devices, comprising: shell, which defines inner cavity, first liquid port and second liquid port, third liquid port;First liquid port and third liquid port are communicated with inner cavity, the head of injector is used to be attached to third liquid port, first valve port is configured in first liquid port;Partition component, which is arranged in inner cavity and separates inner cavity into distal end cavity and proximal end cavity, filter port and second valve port adjacent to filter port are configured on partition component;Filter membrane, which covers at filter port;Suction channel, which is constructed between second valve port and second liquid port;First valve component and second valve component, first valve component and second valve component are respectively arranged at first valve port and second valve port;First valve component allows fluid to flow from distal end cavity to first liquid port while limiting reverse flow of fluid, and second valve component allows fluid to flow from suction channel to proximal end cavity.

Description

Technical Field

[0001] This utility model relates to a filtration device, and more particularly to a hydrogel filtration device. Background Technology

[0002] In the prior art, the process of filtering hydrogel using a syringe and a filter element is as follows: First, the hydrogel to be filtered is drawn from the container using a syringe. Then, the filter element is attached to the head of the syringe. Next, the hydrogel in the syringe is pushed out to pass through the filter membrane of the filter element for filtration. The filtered hydrogel flows out from the outlet of the filter element. Then, the filter element is temporarily removed. Then, the hydrogel to be filtered is drawn again using the syringe. Then, the filter element is attached to the syringe again for filtration. This process is repeated.

[0003] The existing process for filtering hydrogels is inconvenient to operate, and repeated disassembly and reassembly of filter components can easily lead to exposure and contamination of the hydrogel. Summary of the Invention

[0004] In view of the above-mentioned technical problems existing in the prior art, the present invention provides a hydrogel filtration device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A hydrogel filtration device, comprising: The housing defines an inner cavity, a first and a second liquid port located at a distal end, and a third liquid port located at a proximal end; both the first and the third liquid ports are in communication with the inner cavity, the head of the syringe is used to attach to the third liquid port, and a first valve port is disposed within the first liquid port; A separating component is disposed in the inner cavity and divides the inner cavity into a distal cavity and a proximal cavity. A filter port and a second valve port adjacent to the filter port are provided on the separating component. A filter membrane that covers the filter opening; A suction channel is constructed between the second valve port and the second liquid port, and the suction channel is in communication with the proximal cavity via the second valve port; A first valve component and a second valve component are respectively arranged at the first valve port and the second valve port; the first valve component allows fluid to flow from the distal cavity to the first liquid port while restricting the reverse flow of fluid, and the second valve component allows fluid to flow from the suction channel to the proximal cavity.

[0006] Preferably, the housing includes an outer shell and an inner shell, the outer shell and the inner shell defining the suction channel, the distal end of the inner shell forming the first liquid port, and the distal end of the inner shell and the distal end of the outer shell defining the second liquid port.

[0007] Preferably, an annular suction channel is defined between the outer shell and the inner shell, the separating member is formed at the proximal end of the inner shell, the filter port is formed in the middle of the separating member and is circular, and the second valve port is formed around the filter port and is annular; wherein: The second valve component is an annular silicone plate covering the second valve port. The radially inner side of the annular silicone plate is attached and fixed to the separator to allow the radially outer side of the annular silicone plate to deform toward the proximal cavity and open the second valve port.

[0008] Preferably, a circumferentially arranged grid plate is provided at the first liquid inlet, and the first valve component includes a spherical valve core and a spring for pushing against the spherical valve core.

[0009] Preferably, the filter port is provided with a plurality of circumferentially arranged inner radial plates, and the filter membrane covers the side of the filter port located in the proximal cavity.

[0010] Preferably, the first valve port is provided with a plurality of outer spokes arranged circumferentially.

[0011] Preferably, the housing further includes an end cap, which is fastened to the proximal end of the outer shell, and the third liquid port is formed in the middle of the end cap.

[0012] Preferably, the inner wall of the distal section of the outer casing is formed with circumferentially arranged positioning ribs.

[0013] Compared with the prior art, the beneficial effects of the hydrogel filtration device disclosed in this utility model are: The hydrogel filtration device attached to the syringe provided by this utility model can extract and filter hydrogel, and there is no need to disassemble the filtration device when the aspiration and filtration are alternated, which simplifies the filtration operation and makes the hydrogel less prone to contamination.

[0014] The overview of various implementations or examples of the technology described in this utility model is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0015] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the utility model. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0016] Figure 1 This is a view of the hydrogel filtration device in use (in the state of extracting hydrogel) provided in an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A-direction view.

[0018] Figure 3 for Figure 1 BB-direction sectional view.

[0019] Figure 4 A view of the hydrogel filtration device provided in an embodiment of the present invention in its usage state (in the state of filtering hydrogel).

[0020] Figure label: 10-Shell; 11-Outer shell; 12-Inner shell; 13-First liquid port; 14-Second liquid port; 15-Third liquid port; 16-Suction channel; 161-Positioning rib; 21-Distal cavity; 22-Proximal cavity; 31-First valve port; 32-Second valve port; 321-Outer spoke plate; 33-Filter port; 331-Inner spoke plate; 41-Spherical valve core; 411-Spring; 412-Grid plate; 50-Separating component; 60-Filter membrane; 70-Annular silicone plate; 100-Injector; 101-End. Detailed Implementation

[0021] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0023] An embodiment of this utility model discloses a hydrogel filtration device for attachment to the end 101 of a syringe 100. The filtration device can be attached to the end 101 in a detachable manner or in a non-detachable manner.

[0024] like Figures 1 to 4 As shown, the filtration device includes: a housing 10, a separating component 50, a filter membrane 60, a first valve component, and a second valve component.

[0025] The housing 10 includes an outer shell 11, an inner shell 12, and an end cap. Both the outer shell 11 and the inner shell 12 have constricted distal ends. The inner shell 12 is located inside the outer shell 11, and its proximal end is located inside the outer shell 11. A partition member 50 is formed at the proximal end of the inner shell 12, and the end cap is fastened to the proximal end of the outer shell 11. The main body section of the inner shell 12 defines a distal cavity 21, and the partition member 50 and the distal section of the outer shell 11 define a proximal cavity 22. A filter port 33 is provided in the middle region of the partition member 50, and the distal cavity 21 and the proximal cavity 22 communicate through the filter port 33.

[0026] An annular suction channel 16 is defined between the outer shell 11 and the inner shell 12. A first liquid port 13 is formed at the distal end of the inner shell 12, thereby communicating with the distal cavity 21. A first valve port 31 is defined inside the first liquid port 13. A second liquid port 14 is defined between the distal ends of the outer shell 11 and the distal ends of the inner shell 12, thereby communicating with the suction channel 16. A third liquid port 15 is formed in the middle region of the end cap, communicating with the proximal cavity 22. The tip 101 of the syringe 100 is used to attach to the third liquid port 15 on the end cap. Preferably, the port of the first liquid port 13 is flush with or protrudes from the port of the second liquid port 14.

[0027] The separator 50 is a plate-shaped component, and the filter port 33 is a circular opening in the middle of the separator 50. An annular second valve port 32 is provided in the area around the filter port 33 and opposite to the proximal port of the suction channel 16. Thus, the suction channel 16 can communicate with the proximal cavity 22 through the second valve port 32.

[0028] A filter membrane 60 covers the filter opening 33 for filtering the hydrogel that passes through it. Preferably, the filter membrane 60 is made of a hydrophobic material.

[0029] A first valve component is disposed at the first liquid port 13. This first valve component allows fluid to flow from the port of the first liquid port 13 to the distal cavity 21, while restricting the reverse flow of fluid in the distal cavity 21 to the port of the first liquid port 13. The first valve component includes a spherical valve core 41, a spring 411, and a plurality of grid plates 412. The plurality of grid plates 412 are arranged circumferentially at the port of the first liquid port 13. The spherical valve core 41 is disposed between the first valve port 31 and the grid plates 412. The spring 411 is disposed between the spherical valve core 41 and the grid plates 412 and is used to push the spherical valve core 41 towards the first valve port 31 to block the first valve port 31.

[0030] A second valve component is disposed at the second valve port 32. This second valve component allows fluid to flow from the suction channel 16 to the proximal cavity 22, while restricting the flow of fluid within the proximal cavity 22 to the suction channel 16. The second valve component is preferably an annular silicone plate 70 covering the annular second valve port 32. The annular silicone plate 70 is located on the side of the separator 50 located in the proximal cavity 22, and the radially inner side of the annular silicone plate 70 is attached and fixed to the separator 50. Thus, the annular silicone plate 70 can open the second valve port 32 only by deforming radially outward toward the proximal cavity 22.

[0031] Preferably, threads are machined on the outer wall of the inner shell 12 near its proximal end and on the inner wall of the outer shell 11 near its proximal end, so that the inner shell 12 and the outer shell 11 are screwed together near their proximal ends, thereby achieving a detachable assembly of the outer shell 11 and the inner shell 12. Preferably, the end cap is screwed onto the outer wall of the outer shell 11 near its proximal end.

[0032] Preferably, a plurality of circumferentially arranged outer spokes 321 are arranged at the annular second valve port 32 to prevent the annular silicone plate 70 from deforming toward the distal end of the housing 10. Preferably, a plurality of circumferentially arranged inner spokes 331 are arranged at the circular filter port 33 to limit excessive deformation of the filter membrane 60 toward the distal end of the housing 10.

[0033] Preferably, the inner wall of the distal section of the outer shell 11 is formed with circumferentially arranged positioning ribs 161, so that after the inner shell 12 is assembled with the outer shell 11, the inner shell 12 is positioned by the positioning ribs 161, thereby making the annular second liquid port 14 and the first liquid port 13 substantially coaxial.

[0034] The working process of the above-mentioned filtration device is described below.

[0035] First, the distal end of the filter device attached to the syringe 100 is immersed in the hydrogel to be filtered in the container. The piston rod of the syringe 100 is pulled, and under negative pressure, the annular rubber plate deforms and opens the second valve port 32, while the ball valve core 41 closes the first valve port 31. The hydrogel to be filtered enters the proximal cavity 22 and the syringe 100 through the second liquid port 14, the suction channel 16, and the second valve port 32, thereby completing the extraction of the hydrogel to be filtered.

[0036] Then, the piston rod of the syringe 100 is pushed, and under the action of positive pressure, the annular rubber plate closes the second valve port 32, and the spherical valve core 41 moves away from the first valve port 31 and opens the first valve port 31. The hydrogel in the proximal cavity 22 and the syringe 100 is filtered through the filter membrane 60 at the filter port 33, and the filtered hydrogel flows out from the first liquid port 13 through the distal cavity 21. Furthermore, although exemplary embodiments have been described in this invention, its scope includes any and all embodiments based on this invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, which will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0037] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of a particular disclosed embodiment. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is an independent, separate embodiment, and these embodiments are contemplated as being possible in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0038] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A hydrogel filtration device, characterized in that, include: A housing that defines an inner cavity, a first and a second liquid port at the distal end, and a third liquid port at the proximal end; Both the first liquid port and the third liquid port are connected to the inner cavity, the head of the syringe is used to attach to the third liquid port, and a first valve port is configured inside the first liquid port; A separating component is disposed in the inner cavity and divides the inner cavity into a distal cavity and a proximal cavity. A filter port and a second valve port adjacent to the filter port are provided on the separating component. A filter membrane that covers the filter opening; A suction channel is constructed between the second valve port and the second liquid port, and the suction channel is in communication with the proximal cavity via the second valve port; A first valve component and a second valve component are respectively arranged at the first valve port and the second valve port; the first valve component allows fluid to flow from the distal cavity to the first liquid port while restricting the reverse flow of fluid, and the second valve component allows fluid to flow from the suction channel to the proximal cavity.

2. The hydrogel filtration device according to claim 1, characterized in that, The housing includes an outer shell and an inner shell, with the outer shell and the inner shell defining the suction channel. The distal end of the inner shell forms the first liquid port, and the distal end of the inner shell and the distal end of the outer shell define the second liquid port.

3. The hydrogel filtration device according to claim 2, characterized in that, An annular suction channel is defined between the outer shell and the inner shell. The separating member is formed near the proximal end of the inner shell. The filter port is formed in the middle of the separating member and is circular. The second valve port is formed around the filter port and is annular. The second valve component is an annular silicone plate covering the second valve port. The radially inner side of the annular silicone plate is attached and fixed to the separator to allow the radially outer side of the annular silicone plate to deform toward the proximal cavity and open the second valve port.

4. The hydrogel filtration device according to claim 2, characterized in that, The first liquid inlet is provided with a circumferentially arranged grid plate, and the first valve component includes a spherical valve core and a spring for pushing against the spherical valve core.

5. The hydrogel filtration device according to claim 3, characterized in that, The filter port is provided with a plurality of circumferentially arranged inner radial plates, and the filter membrane covers the side of the filter port located in the proximal cavity.

6. The hydrogel filtration device according to claim 3, characterized in that, The first valve port is provided with multiple outer spokes arranged in a circumferential direction.

7. The hydrogel filtration device according to claim 3, characterized in that, The housing also includes an end cap, which is fastened to the proximal end of the outer shell, and the third liquid port is formed in the middle of the end cap.

8. The hydrogel filtration device according to claim 2, characterized in that, The inner wall of the distal section of the outer casing is formed with circumferentially arranged positioning ribs.

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