A fat filtration system

Abstract

The application discloses a fat filtering system, which comprises a needle cylinder, a male interface arranged at one end of the needle cylinder, a filter cylinder arranged in the needle cylinder, a filter space formed by the filter cylinder, the male interface being connected with the filter space, a piston movably arranged in the filter cylinder, a push rod connected with the piston, a plurality of water-absorbing cottons arranged between the filter cylinder and the inner wall of the needle cylinder, a plurality of oil-absorbing cottons arranged between the filter cylinder and the inner wall of the needle cylinder, and the water-absorbing cottons and the oil-absorbing cottons being arranged in a staggered mode. The fat to be filtered is sucked into the filter space from the male interface, the filter cylinder filters the fat, and the water-absorbing cottons and the oil-absorbing cottons absorb filtered liquid. The filtering process is simple, and can effectively remove swelling liquid, tissue fluid, free oil droplets and other liquids in the fat to be filtered, thereby improving the purification rate of the fat to be filtered. The filtering process is carried out in the needle cylinder, and a closed filtering is formed, so that the fat can be effectively prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fat filtering, in particular to a fat filtering system. BACKGROUND

[0002] Fat is the main form of energy storage in the human body. When the energy intake exceeds the immediate needs of the body, the excess energy will be converted into fat for storage to be used when energy is insufficient. Human fat can be used for fat filling, stem cell extraction, etc. However, the fat extracted from the human body cannot be used directly. For example, if fat filling is required, the oil, water and other liquids in the fat need to be separated.

[0003] In the related art, the basic methods of fat filtering mainly include four types: standing, centrifugation, filtering and cleaning. The Coleman centrifugation method is the most widely accepted fat filtering processing method in the clinic. After centrifugation, the fat is divided into four layers from top to bottom: free oil droplets, low-density fat, high-density fat and liquid layer. The centrifugation method uses density gradient to separate the fat particles in the extracted fat. The equipment required for the Coleman centrifugation method is expensive and the operation is complex. There are a large number of free oil droplets in the fat particles after centrifugation. Oil droplets have been considered to be related to inflammation after fat transplantation and have a high impact on fat cell survival.

[0004] Therefore, it is necessary to provide a fat filtering system to simplify the steps of fat filtering and reduce the content of oil droplets in the fat particles after filtering, which is an important technical problem to be solved. SUMMARY

[0005] The present application provides a fat filtering system, which aims to solve the problems of complex steps of fat filtering and more oil droplets in fat particles after filtering in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides a fat filtering system, which comprises: a needle cylinder; a male interface, which is arranged at one end of the needle cylinder; a filter cartridge, which is arranged in the needle cylinder and encloses a filtering space, and the male interface is connected to the filtering space; a piston, which is movably arranged in the filter cartridge; a push rod, which is connected to the piston; a plurality of water-absorbing cottons, which are arranged in intervals between the filter cartridge and the inner wall of the needle cylinder; a plurality of oil-absorbing cottons, which are arranged in intervals between the filter cartridge and the inner wall of the needle cylinder, and the water-absorbing cottons and the oil-absorbing cottons are arranged in a staggered manner.

[0007] In some embodiments, the fat filtering system further comprises:

[0008] a total flow channel, which is connected to the male interface;

[0009] at least two spiral sub-flow channels, one end of each of the spiral sub-flow channels being connected to the total flow channel, and the other end of each of the spiral sub-flow channels being connected to the filtering space, and the spiral sub-flow channels enable the fat to flow into the filtering space in a direction towards the inner wall surface of the filter cartridge.

[0010] In some embodiments, further comprising:

[0011] A filter fixing cylinder is arranged between the needle cylinder and the filter cartridge, an inner wall surface of the filter fixing cylinder is attached to the filter cartridge, and an outer wall surface of the filter fixing cylinder is attached to an inner wall surface of the needle cylinder.

[0012] A plurality of mounting grooves are arranged in the filter fixing cylinder at intervals in a circumferential direction, and the water absorbing cotton and the oil absorbing cotton are arranged in the mounting grooves at intervals.

[0013] In some embodiments, further comprising:

[0014] An end cap is arranged at the other end of the needle cylinder, and the push rod portion extends out of the end cap.

[0015] A channel is arranged in the push rod.

[0016] An outlet is arranged in the push rod near the piston, and the outlet is connected to the channel.

[0017] In some embodiments, further comprising:

[0018] A plurality of mounting rods are arranged in the mounting grooves at intervals, and one side of the mounting rod abuts against the oil absorbing cotton or the water absorbing cotton.

[0019] A reverse flow hole is arranged in the water absorbing cotton and the oil absorbing cotton near the top.

[0020] In some embodiments, further comprising:

[0021] A first sealing member is arranged between the end cap and the push rod.

[0022] A second sealing member is arranged between the end cap and the needle cylinder.

[0023] In some embodiments, further comprising:

[0024] A third sealing member is arranged between the filter fixing cylinder and the needle cylinder, and the third sealing member is arranged in the needle cylinder near the bottom of the filter fixing cylinder.

[0025] In some embodiments, further comprising:

[0026] A female connector is used to connect a male connector.

[0027] In some embodiments, the female connector comprises:

[0028] A first connecting end is used to connect the male connector.

[0029] A limiting portion is arranged at one end of the first connecting end.

[0030] A second connecting end is arranged at the other end of the limiting portion.

[0031] In some embodiments, the end of the push rod away from the piston is provided with an inclined end surface.

[0032] The technical scheme of the present application provides a fat filtering system, which comprises a needle cylinder, a male connector, a filter cartridge, a piston, water-absorbing cotton and oil-absorbing cotton. The male connector is arranged at one end of the needle cylinder. The filter cartridge is arranged in the needle cylinder and encloses a filtering space, and the male connector is connected to the filtering space. The piston is movably arranged in the filter cartridge. The push rod is connected to the piston. A plurality of pieces of water-absorbing cotton are arranged between the filter cartridge and the inner wall of the needle cylinder in a spaced manner. A plurality of pieces of oil-absorbing cotton are arranged between the filter cartridge and the inner wall of the needle cylinder in a spaced manner, and the water-absorbing cotton and the oil-absorbing cotton are arranged in a staggered manner. The fat to be filtered is sucked into the filtering space from the male connector. After being sucked in, the swelling liquid, tissue fluid and free oil droplets in the fat to be filtered can all be absorbed by the water-absorbing cotton and the oil-absorbing cotton arranged between the filter cartridge and the needle cylinder. After the filtering is completed, the piston is moved by the push rod, so that the fat particles remaining in the filter cartridge are discharged from the male connector for subsequent use. The filtering process is simple, and the swelling liquid, tissue fluid and free oil droplets in the fat to be filtered can be effectively removed, so that the purification rate of the fat to be filtered is improved. The entire filtering process is carried out in the cavity of the needle cylinder, and a closed filtering is formed, so that the fat can be effectively prevented from being contaminated. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0034] Figure 1 FIG. 1 is a structural schematic diagram of a fat filtering system according to an embodiment of the present application;

[0035] Figure 2 FIG. 2 is a sectional view of the fat filtering system according to the embodiment of the present application;

[0036] Figure 3 FIG. 3 is a partial enlarged view of A in FIG. 1; Figure 2

[0037] Figure 4 FIG. 4 is a partial enlarged view of B in FIG. 1; Figure 2

[0038] Figure 5 FIG. 5 is a structural schematic diagram of a filter cartridge fixing cylinder according to an embodiment of the present application. DETAILED DESCRIPTION

[0039] ​​With reference to the drawings and the embodiments disclosed herein, it will be understood that the application is not limited in scope to the particular embodiments described herein. It will be further appreciated that any one or more embodiments of the present application can include one, some or all of the features or aspects described herein. Those of ordinary skill in the art will appreciate that methods, systems, and apparatuses other than those specifically described herein can employ the principles and concepts disclosed herein. Accordingly, any and all modifications, variations or equivalent arrangements that fall within the scope of the appended claims should be considered within the scope of the application.

[0040] It should be noted that the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0041] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element.

[0042] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0043] Referring to Figure 1 , Figure 2 and Figure 3 , the present application proposes a fat filtering system, comprising: a needle cylinder 1; a male connector 3, the male connector 3 is arranged at one end of the needle cylinder 1; a filter cylinder 10, the filter cylinder 10 is arranged in the needle cylinder 1, the filter cylinder 10 encloses a filtering space 11, and the male connector 3 is connected through the filtering space 11; a piston 6, the piston 6 is movably arranged in the filter cylinder 10; a push rod 2, the push rod 2 is connected to the piston 6; a plurality of water-absorbing cottons 12, the plurality of water-absorbing cottons 12 are arranged at intervals between the filter cylinder 10 and the inner wall of the needle cylinder 1; a plurality of oil-absorbing cottons 17, the plurality of oil-absorbing cottons 17 are arranged at intervals between the filter cylinder 10 and the inner wall of the needle cylinder 1, and the water-absorbing cottons 12 and the oil-absorbing cottons 17 are arranged in a staggered manner.

[0044] The needle cylinder 1 is the structural basis of the whole filtering system, a cavity is arranged in the needle cylinder 1, the filter cylinder 10, the water absorbing cotton 12 and the oil absorbing cotton 17 and other structures are arranged in the cavity, and the whole filtering process is also carried out in the cavity. The filter cylinder 10 is the core component of the fat filtering system, which is used for separating and extracting fat particles, and the swelling liquid, tissue fluid and free oil droplets in the fat can pass through the filter screen and be absorbed by the water absorbing cotton 12 or the oil absorbing cotton 17, while the fat particles are left in the filter cylinder 10, so that the fat is filtered and purified. The piston 6 is used for discharging the fat particles, the piston 6 is connected with the push rod 2 through internal buckling or interference fit, the fat particles left in the filter cylinder 10 after filtering can be pushed out through the piston 6. The water absorbing cotton 12 and the oil absorbing cotton 17 are arranged in a staggered manner, and the circumferential extension length of the water absorbing cotton 12 or the oil absorbing cotton 17 and the interval between the two are very small, and the water absorbing cotton 12 and the oil absorbing cotton 17 are provided with 10 or more, so that the swelling liquid, tissue fluid and free oil droplets can be fully absorbed.

[0045] Specifically, the fat to be filtered is sucked into the filtering space 11 from the male connector 3, after being sucked, the swelling liquid, tissue fluid and free oil droplets in the fat to be filtered can pass through the filter cylinder 10 and be absorbed by the water absorbing cotton 12 and the oil absorbing cotton 17 located between the filter cylinder 10 and the needle cylinder 1. After the filtering is completed, the piston 6 is pushed to move by the push rod 2, so that the fat particles left in the filter cylinder 10 are discharged through the male connector 3 for subsequent use. The whole filtering process is simple in steps, and can effectively remove the swelling liquid, tissue fluid and free oil droplets in the fat to be filtered, and improve the purification rate of the fat to be filtered. And the whole filtering process is carried out in the cavity of the needle cylinder 1, forming a closed filtering, which can effectively avoid the pollution of the fat.

[0046] Specifically, the filter cylinder 10 is made of polyethylene terephthalate (PET) material, which is fixed to the inner wall of the needle cylinder 1 through ultrasonic welding technology. The PET material has excellent physical and mechanical properties in a wide temperature range, and will not deform to maintain its filtering effect when the fat to be filtered is extruded. And the polyethylene terephthalate (PET) material has good corrosion resistance and wear resistance, which is conducive to adapting to various environmental conditions.

[0047] Specifically, the piston 6 is made of silica gel or rubber material, both of which have good elasticity and sealing performance, so as to avoid leakage of fat particles when pushing the fat particles. The needle cylinder 1, the push rod 2 and other structures are made of polypropylene or polypropylene butylene material, both of which have high hardness and rigidity, excellent mechanical properties and high melting point, which can ensure the orderly progress of the filtering process.

[0048] The absorbent cotton 12 is made by wrapping superabsorbent polymer particles in medical non-woven fabric. The main chemical components of the superabsorbent polymer are 88% low-crosslinked sodium polyacrylate, 8%–10% water, and 0.5%–1.0% crosslinking agent. It has the following characteristics: high absorbency: it can absorb hundreds or thousands of times its own weight in deionized water; high absorption rate: each gram of superabsorbent polymer can absorb hundreds of grams of deionized water within 30 seconds; high water retention: after absorbing water, the superabsorbent polymer does not easily separate out under external pressure.

[0049] Among them, the oil-absorbing cotton 17 is made of non-woven fabric wrapped with meltblown polypropylene fiber absorbent cotton. Because the fiber performs well in terms of density, water absorption rate and moisture regain, it has good hydrophobic and oleophilic properties. Moreover, it remains stable for a long time in complex acid and alkali environments and will not undergo any chemical reaction. At the same time, it can lock in oil droplets and prevent backflow.

[0050] See Figure 2 and Figure 4 As shown, in some embodiments, the filter further includes: a main flow channel 16 connected to the male interface 3; at least two spiral diversion channels 15, one end of which is connected to the main flow channel 16. The inner wall of the main flow channel 16 is smooth, and its connection with the spiral diversion channels 15 is smoothly transitioned to avoid damage to the fat during flow. The other end of the spiral diversion channels 15 is connected to the filtration space 11. The spiral diversion channels 15 allow the fat to flow into the filtration space 11 in a direction toward the inner wall of the filter cartridge 10. The fat to be filtered flows into the main flow channel 16 from the male interface 3 and is diverted at the connection between the main flow channel 16 and the spiral diversion channels 15 to prevent a large amount of fat from accumulating at one point, which would prevent the liquid inside the fat from being effectively discharged along the filter cartridge 10. The spiral diversion channels 15 are used to change the flow direction of the fat, causing the fat to flow toward the inner wall of the filter cartridge 10, thereby giving the liquid inside the fat a tendency to flow out of the filter cartridge 10.

[0051] In this embodiment, the spiral diversion channel 15 is a curved channel, with one end connected to the main channel 16 and the other end connected to the filtration space 11. The opening of the spiral diversion channel 15 toward the filtration space 11 is inclined relative to the horizontal plane, meaning that in addition to having a tendency to flow out of the filter cartridge 10, the fat also has a tendency to flow upward, thereby increasing the contact area between the fat and the filter cartridge 10. Preferably, the direction of the spiral diversion channel 15 toward the opening of the filtration space 11 is tangent to the filter cartridge 10 in the horizontal direction, so that the fat to be filtered has a tendency to rotate after entering the filtration space 11, thereby allowing the swelling fluid, tissue fluid, free oil droplets, and other liquids in the fat to be filtered to be effectively absorbed by the absorbent cotton 12 and the oil-absorbing cotton 17.

[0052] See Figure 3As shown, in some embodiments, it further includes: a filter cartridge fixing cylinder 8, which is disposed between the syringe 1 and the filter cartridge 10. The inner wall surface of the filter cartridge fixing cylinder 8 is attached to the filter cartridge 10, and the outer wall surface of the filter cartridge fixing cylinder 8 is attached to the inner wall surface of the syringe 1. During the filtration process, it is necessary to ensure that the filter cartridge 10 does not deform and that the connection between the filter cartridge 10 and the syringe 1 is not damaged. The filter cartridge fixing cylinder 8 can effectively support the filter cartridge 10, ensuring that the filter cartridge 10 does not deform or shift, thereby improving the stability of the filtration process. Multiple mounting slots are provided in the filter cartridge fixing cylinder 8 at circumferential intervals. Water-absorbing cotton 12 and oil-absorbing cotton 17 are arranged at intervals in the mounting slots. The mounting slots are used to accommodate water-absorbing cotton 12 or oil-absorbing cotton 17. The bottom of the mounting slot is preferably flush with the opening of the spiral diversion channel 15 facing the filtration space 11, ensuring that the liquid filtered from the fat can be effectively absorbed by the water-absorbing cotton 12 or oil-absorbing cotton 17.

[0053] See Figure 1 , Figure 2 As shown, in some embodiments, the syringe further includes: an end cap 5, disposed at the other end of the syringe 1, with the push rod 2 extending out of the end cap 5; a channel 22, disposed within the push rod 2; and an outlet 23, arranged adjacent to the piston 6 on the push rod 2, the outlet 23 connecting to the channel 22. The end cap 5 allows the cavity inside the syringe 1 to form a completely sealed cavity and provides space for the push rod 2 to extend. The channel 22 can connect to the compressor, and the channel 22 connects to the filter space 11 via the outlet 23. By evacuating the air from the filter space 11 by the compressor, a slight negative pressure state can be maintained within the filter space 11 to draw in fat.

[0054] In this embodiment, channel 22 is used to draw air from the filter space 11 to press in fat. The outlet 23 is provided with push rod 2, and is located at one end of push rod 2 near end cap 5. Preferably, there are two or more outlets 23 to ensure that a slightly negative pressure state can be stably maintained in the filter space 11. Since piston 6 is located in filter cartridge 10, piston 6 cannot provide negative pressure to filter space 11. Only through channel 22 and external compressor can the negative pressure of the entire cavity in syringe 1 be maintained to draw in fat.

[0055] See Figure 5As shown, in some embodiments, further comprising: a plurality of installation rods 81, the plurality of installation rods 81 are installed in the installation groove at intervals, and one side of the installation rod 81 abuts against the oil absorbing cotton 17 or the water absorbing cotton 12; and a backflow hole 13, the water absorbing cotton 12 and the oil absorbing cotton 17 are provided with the backflow hole 13 near the top. The installation rod 81 is arranged so that a flow channel can be formed between the filter cartridge 10 and the oil absorbing cotton 17 or the water absorbing cotton 12, that is, liquid can flow from the oil absorbing cotton 17 or the water absorbing cotton 12 to the filter cartridge 10, the liquid flows into the other side of the installation rod 81 from the backflow hole 13, and then flows through the oil absorbing cotton 17 or the water absorbing cotton 12, the liquid that has flowed through the oil absorbing cotton 17 or the water absorbing cotton 12 can clean the oil absorbing cotton 17 or the water absorbing cotton 12, and the cleaned liquid can finally be discharged from the male connector 3.

[0056] In the embodiment, the flow channel not only can communicate with the compressor, but also can communicate with a cleaning liquid source, a clean water source, a high-temperature steam source and a high-temperature air source. After the fat filtration is completed and the fat is discharged, the piston 6 needs to be lifted to the uppermost end. At this time, the cleaning liquid flows out from the outlet 23, flows to the other side of the installation rod 81 from the backflow hole 13, and then flows to the filter cartridge 10 through the oil absorbing cotton 17 or the water absorbing cotton 12 to clean the oil absorbing cotton 17 or the water absorbing cotton 12. The cleaning liquid contains oil cleaning agent and other components to effectively remove oil droplets in the oil absorbing cotton 17. After the cleaning liquid flows into the filtering space 11, the filtering space 11 and the filter cartridge 10 can also be cleaned, and the fat particles and tissue fragments remaining in the filtering space 11 are discharged. After a period of time of cleaning by the cleaning liquid, clean water is introduced through the channel 22 to remove the cleaning liquid remaining in the oil absorbing cotton 17, the water absorbing cotton 12 and the filtering space 11. The cleaning liquid is continuously removed by the clean water until the cleaning liquid is completely removed. Whether the cleaning liquid is completely removed can be detected by detecting whether the liquid discharged from the male connector 3 contains the cleaning liquid. After the cleaning liquid is completely removed, high-temperature steam is introduced through the channel 22 to sterilize each structure in the needle cylinder 1. After the sterilization process is completed, high-temperature air is immediately introduced to dry each structure in the needle cylinder 1. In the same way, whether the drying is completely can be determined by detecting the humidity of the gas discharged from the male connector 3. Through the above steps, repeated filtration of fat can be realized, and the utilization rate of the equipment is improved.

[0057] In the embodiment, the steam temperature of the high-temperature sterilization is not higher than 120℃, and the sterilization time is 20 minutes. Since the filter cartridge 10, the piston 6, the push rod 2, the needle cylinder 1, the water absorbing cotton 12 and the oil absorbing cotton 17 in the embodiment are all high-temperature resistant materials, the above structures will not be affected during the high-temperature sterilization. Through the above high-temperature sterilization steps, it can be effectively avoided that the fat is contaminated due to repeated use of the needle cylinder 1.

[0058] Referring to Figure 2 , Figure 3As shown, in some embodiments, it further includes: a first sealing element 7, disposed between the end cap 5 and the push rod 2; and a second sealing element 9, disposed between the end cap 5 and the syringe 1. Both the first sealing element 7 and the second sealing element 9 are used to maintain the sealing of the cavity, ensuring the normal operation of the negative pressure suction process and preventing fat contamination. Preferably, the first sealing element 7 and the second sealing element 9 are O-rings. The end cap 5 is provided with an annular groove to accommodate the first sealing element 7, and the syringe 1 is provided with an annular groove to accommodate the second sealing element 9.

[0059] See Figure 2 , Figure 4 As shown, in some embodiments, a third seal 14 is further included. The third seal 14 is disposed between the filter cartridge fixing cylinder 8 and the syringe 1, and the third seal 14 is arranged on the syringe 1 adjacent to the bottom of the filter cartridge fixing cylinder 8. The third seal 14 is used to maintain the sealing of the cavity, ensure the normal operation of the negative pressure suction process, and prevent grease contamination. Preferably, the third seal 14 is an O-ring syringe 1, and the syringe 1 is provided with an annular groove to accommodate the third seal, and a sealant is provided between the annular groove and the O-ring.

[0060] See Figure 1 , Figure 2 , Figure 3 As shown, in some embodiments, it further includes a female interface 4, which is used to connect to the male interface 3. The female interface 4 serves as an intermediate connector. During the negative pressure suction process, the female interface 4 can be removed. During the cleaning process, a detection device can be connected through the female interface 4 to detect the composition of the liquid or gas discharged from the male interface 3.

[0061] In some embodiments, the female interface 4 includes: a first connecting end 41 for connecting to the male interface 3; a limiting part 42, with the first connecting end 41 disposed at one end of the limiting part 42; and a second connecting end 43 disposed at the other end of the limiting part 42. The second connecting end 43 is used to connect to external components and to detect the composition of liquids or gases discharged from the male interface 3. By providing the female interface 4, leakage of residual fat particles or human tissue fluid can be effectively avoided, preventing medical contamination and improving the safety of fat filtration.

[0062] See Figure 1 , Figure 2 As shown, in some embodiments, the end of the push rod 2 furthest from the piston 6 is provided with a beveled end face. The beveled end face facilitates the insertion and use of tubing such as trachea, improving convenience. Preferably, a locking bolt is provided near the beveled end face of the push rod 2 to lock the position of the tubing such as trachea, preventing it from dislodging from the push rod 2. More preferably, a gripping part 21 is provided on the outside of the push rod 2, which facilitates the movement of the push rod by the operator.

[0063] The above merely provides part or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structure variations made according to the contents of the present application and drawings, or direct / indirect application in other related technical fields shall fall within the scope of protection of the present application.

Claims

1. A fat filtration system, characterized in that, include: Syringe (1); Male interface (3), the male interface (3) is disposed at one end of the syringe (1); A filter cartridge (10) is disposed inside the syringe (1), and the filter cartridge (10) encloses a filtration space (11), and the male interface (3) connects to the filtration space (11). Piston (6), which is movably disposed on the filter cartridge (10). Push rod (2), the push rod (2) is connected to the piston (6); Multiple absorbent cotton pieces (12) are spaced apart between the filter cartridge (10) and the inner wall of the syringe (1); Multiple oil-absorbing cotton pieces (17) are spaced apart between the inner walls of the filter cartridge (10) and the syringe (1), and the water-absorbing cotton (12) and the oil-absorbing cotton (17) are staggered. Also includes: Main flow channel (16), which is connected to the male interface (3); At least two spiral diversion channels (15), one end of which is connected to the main flow channel (16) and the other end of which is connected to the filter space (11), the spiral diversion channels (15) causing fat to flow into the filter space (11) in a direction toward the inner wall of the filter cartridge (10). Also includes: A filter cartridge fixing cylinder (8) is disposed between the syringe (1) and the filter cartridge (10). The inner wall surface of the filter cartridge fixing cylinder (8) is attached to the filter cartridge (10), and the outer wall surface of the filter cartridge fixing cylinder (8) is attached to the inner wall surface of the syringe (1). Multiple mounting slots are provided in the filter cartridge fixing cylinder (8) at circumferential intervals, and the water-absorbing cotton (12) and the oil-absorbing cotton (17) are arranged at intervals in the mounting slots. Also includes: End cap (5), the end cap (5) is disposed at the other end of the syringe (1), and the push rod (2) extends out of the end cap (5). Channel (22), the channel (22) is disposed within the push rod (2); Outlet (23), said outlet (23) is arranged on the push rod (2) adjacent to the piston (6), said outlet (23) communicates with the channel (22); Also includes: Multiple mounting rods (81) are spaced apart in the mounting groove, and one side of each mounting rod (81) abuts against the oil-absorbing cotton (17) or the water-absorbing cotton (12). The absorbent cotton (12) and the oil-absorbing cotton (17) have reflux holes (13) near their tops.

2. The fat filtration system according to claim 1, characterized in that, Also includes: The first sealing element (7) is disposed between the end cap (5) and the push rod (2); The second seal (9) is disposed between the end cap (5) and the syringe (1).

3. The fat filtration system according to claim 1, characterized in that, Also includes: The third sealing element (14) is disposed between the filter cartridge fixing cylinder (8) and the syringe (1), and the third sealing element (14) is arranged on the syringe (1) near the bottom of the filter cartridge fixing cylinder (8).

4. The fat filtration system according to claim 1, characterized in that, Also includes: The female interface (4) is used to connect to the male interface (3).

5. The fat filtration system according to claim 4, characterized in that, The female interface (4) includes: The first connection end (41) is used to connect the male interface (3). A limiting part (42) is provided at one end of the first connecting end (41); The second connecting end (43) is disposed at the other end of the limiting part (42).

6. The fat filtration system according to claim 1, characterized in that, The push rod (2) has a beveled end face at the end away from the piston (6).

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