A nanofat preparation device

Abstract

This application relates to a nanofat preparation device, which includes a preparation platform, a filter mounting base, a fine-mesh filter, two syringes, a cross-shaped piston rod, and a piston rod drive assembly. The syringes are axially connected to the fine-mesh filter. The piston rod drive assembly contains a drive wheel and a motor, which drives the cross-shaped piston rod to reciprocate within the syringe, achieving automated fat pushing and filtering. This application reduces labor intensity through automated drive, avoids inconsistent emulsification effects caused by uneven manual operation, prevents piston rotation deviation, ensures smooth flow and sealing, and significantly improves filtration efficiency and preparation stability. Furthermore, the fine-mesh filter is detachable and replaceable, and the inclined and variable-diameter design of the connecting holes adapts to different filtration needs and reduces the probability of clogging.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a nanofat preparation device. Background Technology

[0002] Fat fractionation filtration is a core technology for purifying adipose tissue and lipid mixtures by particle size, density, composition, and activity. It is widely used in medical aesthetics, food, biomedicine, and animal feed. Early autologous fat transplantation suffered from high levels of impurities and low survival rates, which spurred the development of filtration and centrifugal purification technologies. The food and dairy industries utilize centrifugation and membrane filtration to separate milk fat and refine oils. In the biomedical field, it is used to extract vascular matrix components and adipose-derived stem cells.

[0003] Current nanofat extraction technology is mainly done manually. It involves liposuction or cutting of fat during surgery, removal of fascia tissue, and cutting into small pieces. The surgeon then manually pushes the fat back and forth between the two syringes using two syringes connected by a filter. This method has low fat filtration efficiency and is relatively complicated to operate. Summary of the Invention

[0004] This application provides a nanofat preparation device to solve the technical problems in the related art, which involve low filtration efficiency, complex operation, high labor intensity, and significant influence of human operation on fat activity when manually pushing and purging adipose tissue with two syringes to prepare nanofat.

[0005] In a first aspect, a nanofat preparation apparatus is provided, comprising: A preparation platform is provided with a filter mounting base, and a fine filter can be detachably installed inside the filter mounting base; Two syringes are connected to the two ends of the subdivided filter and are coaxially opposite each other; each syringe has a syringe limiting assembly connected to the preparation platform on its outer side and a cross-shaped piston rod inside it. Two piston rod drive assemblies are provided, corresponding to the cross-shaped piston rod, and each assembly has a channel for the cross-shaped piston rod to pass through. A drive wheel is provided in the channel, which contacts the horizontal outer surface of the cross edge of the cross-shaped piston rod. The drive wheel is connected to a drive motor located in the piston rod drive assembly. The drive motor is used to drive the drive wheel to rotate so as to drive the cross-shaped piston rod to move inside the syringe barrel.

[0006] Preferably, the cross-shaped edge includes a left edge and a right edge; both the left edge and the right edge include an upper horizontal outer surface and a lower horizontal outer surface; The upper and lower horizontal outer surfaces of the left edge are each provided with a drive wheel and a drive motor. The upper and lower horizontal outer surfaces of the right edge are each provided with a drive wheel and a drive motor.

[0007] Preferably, the piston rod drive assembly further includes a rectangular block with a circular channel at its center; the side of the rectangular block axially close to the syringe barrel abuts against the end face of the syringe barrel; the rectangular block is connected to the preparation platform by screws.

[0008] Preferably, the syringe limiting assembly includes a limiting seat and a clamping member, and the top of the limiting seat is provided with a semi-circular groove; One end of the clamping member is hinged to the top of the limiting seat, and the other end has a buckle that engages with the top of the limiting seat; the clamping member also has a semi-circular groove that engages with the syringe barrel, and a rubber pad is provided in the semi-circular groove.

[0009] Preferably, the filter mounting base is provided with a mounting groove; within the mounting groove, on both sides perpendicular to the axial direction of the subdivided filter, elastic elements and vibrators are respectively provided.

[0010] Preferably, the subdivided filter has needle end grooves at both axial ends for connecting with the syringe syringe, and a sealing ring is provided in the needle end grooves; a plurality of interconnecting holes are arranged in an array between the two needle end grooves.

[0011] Preferably, the plurality of connecting holes are provided with an included angle between them and the central axis of the subdivision filter; the included angle between each connecting hole and the central axis of the subdivision filter is not equal; the included angle is 10°~20°.

[0012] Preferably, the diameter of the connecting hole gradually decreases from its middle part to both ends.

[0013] Preferably, there are multiple subdivision filters, and each subdivision filter has a different diameter of its connecting hole; the multiple subdivision filters are selectively connected to the filter mounting base.

[0014] Preferably, the preparation platform is provided with a recessed space, and the filter mounting base, subdividing filter, syringe syringe, syringe limiting assembly, cross-shaped piston rod and two piston rod driving assemblies are installed in the recessed space. The top of the recessed space is provided with a hinged isolation baffle. The preparation platform is also equipped with a controller, which is electrically connected to the piston rod drive assembly and the vibrator. The controller is used to control the number of times the piston rod drive assembly drives the cross-shaped piston rod to move inside the syringe barrel according to the preset number of filtrations, and to start the vibrator to run for a preset time at a designed interval.

[0015] The beneficial effects of the technical solution provided in this application include: This device automates the preparation of nanofat using a preparation platform, filter mounting base, fine-grained filter, and two opposing syringes, along with a piston rod drive assembly. Compared to traditional manual injection, this device utilizes a drive motor to rotate a drive wheel, which in turn drives a cross-shaped piston rod to move stably within the syringe. This significantly reduces the workload for medical personnel and avoids inconsistent fat emulsification caused by uneven manual force. The design of the cross-shaped piston rod and drive wheel effectively prevents piston rotation during injection, ensuring smooth and sealed flow of the fat solution between the two syringes. This significantly improves fat filtration efficiency and the stability of the preparation process, helping to maintain the viability of fat cells and the consistency of preparation quality. This provides more controllable nanofat raw materials for subsequent clinical transplantation. The combination of a vibrator and elastic components reduces the risk of fine-grained filter clogging, increasing filtration throughput and continuous operation. Furthermore, different fine-grained filters can be replaced as needed, allowing the device to adapt to the different clinical application scenarios requiring different nanofat particle sizes, thus enhancing its applicability and flexibility. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the nanofat preparation device provided in the embodiments of this application; Figure 2 A schematic diagram of the elastic element, vibrator, and subdivision filter within the filter mounting base provided in an embodiment of this application; Figure 3 This is a schematic diagram of the internal structure of the piston rod drive assembly provided in an embodiment of this application; Figure 4 A schematic diagram illustrating the state changes of the cross-shaped piston rod passing through the piston rod drive assembly and entering the syringe barrel, as provided in an embodiment of this application. Figure 5 This is a schematic diagram of the structure of the subdivision filter provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the connecting hole provided in an embodiment of this application.

[0018] In the diagram: 1. Preparation platform; 2. Filter mounting base; 3. Subdivision filter; 300. Needle tip groove; 301. Connecting hole; 4. Syringe limiting assembly; 400. Clamping component; 5. Syringe syringe; 6. Cross-shaped piston rod; 600. Left edge; 601. Right edge; 7. Piston rod drive assembly; 700. Drive wheel; 701. Rectangular block; 8. Elastic component; 9. Vibrator; 10. Isolation baffle; 11. Vibrator. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a nanofat preparation device to solve the technical problems of manual fat extraction by repeatedly pushing fat between two syringes, which has low fat filtration efficiency and is also relatively complicated to operate. Please refer to the following description: Example 1 This embodiment provides a nanofat preparation device, mainly comprising: Preparation platform 1, on which filter mounting base 2 is provided, and fine filter 3 is detachably installed in filter mounting base 2; Two syringes 5 are connected to the two ends of the subdivided filter 3 and are arranged coaxially opposite each other; each syringe 5 has a syringe limiting assembly 4 connected to the preparation platform 1 on its outer side and a cross-shaped piston rod 6 inside it. Two piston rod drive assemblies 7 are provided corresponding to the cross-shaped piston rod 6, and each assembly has a channel for the cross-shaped piston rod 6 to pass through. A drive wheel 700 is provided in the channel, which contacts the horizontal outer surface of the cross edge of the cross-shaped piston rod 6. The drive wheel 700 is connected to a drive motor located in the piston rod drive assembly 7. The drive motor is used to drive the drive wheel 700 to rotate so as to drive the cross-shaped piston rod 6 to move inside the syringe barrel 5.

[0021] This embodiment achieves automated preparation of nanofat through a preparation platform 1, a filter mounting base 2, and two oppositely positioned syringe barrels 5, along with a piston rod drive assembly 7. Compared to traditional manual injection, this device uses a drive motor to rotate a drive wheel 700, which in turn drives a cross-shaped piston rod 6 to move stably within the syringe barrel 5. This significantly reduces the workload of medical personnel and avoids inconsistent fat emulsification results caused by uneven manual operation. The design of the cross-shaped piston rod 6 and the drive wheel 700 effectively prevents piston rotation during injection, ensuring smooth and sealed flow of the fat solution between the two syringes. This significantly improves fat filtration efficiency and the stability of the preparation process, providing more controllable nanofat raw materials for subsequent clinical transplantation.

[0022] Example 2 Based on Example 1, this example further refines the driving structure.

[0023] The cross-shaped edge includes a left edge 600 and a right edge 601; both the left edge 600 and the right edge 601 include an upper horizontal outer surface and a lower horizontal outer surface. A drive wheel 700 and a drive motor are respectively provided on the upper and lower horizontal outer surfaces of the left edge 600; A drive wheel 700 and a drive motor are respectively provided on the upper and lower horizontal outer surfaces of the right edge 601.

[0024] The piston rod drive assembly 7 also includes a rectangular block 701, which has a circular channel at its center; the rectangular block 701 abuts against the end face of the syringe barrel 5 on the side axially upward near the syringe barrel 5; the rectangular block 701 is connected to the preparation platform 1 by screws.

[0025] This embodiment further optimizes the structure of the piston rod drive assembly 7. By correspondingly setting drive wheels 700 and drive motors on the upper and lower horizontal outer surfaces of the left edge 600 and right edge 601 of the cross-shaped piston rod 6, a four-point clamping drive structure is formed. This multi-contact point drive method can evenly distribute the drive torque, greatly enhancing the guiding accuracy during piston rod movement and avoiding the jamming or tilting phenomena that may occur with single-point drive. At the same time, the rectangular block 701 has a circular channel at its center that abuts against the end face of the syringe and is fixedly connected by screws, ensuring the coaxiality of the piston rod drive assembly 7, the cross-shaped piston rod 6, and the syringe barrel 5, and limiting the position of the syringe barrel 5. This design ensures the linearity of the reciprocating motion of the cross-shaped piston rod 6, making the pressure control of fat pushing more precise and beneficial to protecting the activity of fat cells.

[0026] Example 3 Based on Embodiment 2, this embodiment describes the syringe limiting component 4.

[0027] The syringe limiting assembly 4 includes a limiting seat and a clamping member 400, and the top of the limiting seat is provided with a semi-circular groove; One end of the clamping member 400 is hinged to the top of the limiting seat, and the other end has a buckle that engages with the top of the limiting seat; the clamping member 400 also has a semi-circular groove that engages with the syringe barrel 5, and a rubber pad is provided in the semi-circular groove.

[0028] In this embodiment, the syringe limiting assembly 4 adopts a structure in which the limiting seat and the clamping member 400 are hinged together, and a semi-circular groove with a rubber pad is provided in the clamping member 400. This design makes the installation and removal of the syringe syringe 5 extremely convenient. Medical staff only need to fasten the clamping member 400 to complete the fixation, saving preoperative preparation time. The rubber pad plays a crucial role in cushioning and anti-slip. The rubber material avoids the risk of scratches or cracks to the plastic outer wall of the syringe caused by hard contact. Especially when injecting fat tissue, it can provide more reliable clamping force, prevent liquid leakage caused by syringe drop, and ensure the safety and hygiene of the operating environment.

[0029] Example 4 The filter mounting base 2 is provided with a mounting groove; within the mounting groove, on both sides perpendicular to the axial direction of the subdivided filter 3, there are elastic elements 8 and vibrators 9 respectively.

[0030] The preparation platform 1 has a recessed space, in which the filter mounting base 2, the fine filter 3, the syringe syringe 5, the syringe limiting assembly 4, the cross-shaped piston rod 6 and the two piston rod drive assemblies 7 are installed. The top of the recessed space is provided with a hinged isolation baffle 10. The preparation platform 1 is also equipped with a controller 11, which is electrically connected to the piston rod drive assembly 7 and the vibrator 9. The controller 11 is used to control the number of times the piston rod drive assembly 7 drives the cross-shaped piston rod 6 to move in the syringe barrel 5 according to the preset number of filtrations, and to start the vibrator 9 to run for a preset time at a designed interval.

[0031] This embodiment introduces a collaborative working mode of vibrator 9 and controller 11, and sets up a recessed space and isolation baffle 10 on the preparation platform. Vibrator 9 is located on both sides of filter mounting base 2 and works in conjunction with elastic elements to indirectly generate high-frequency micro-vibrations during fat filtration, effectively preventing fat particles from accumulating and clogging at the finer filters, keeping the filtration channels unobstructed, thereby increasing filtration throughput. Controller 11 precisely controls the number of piston rod movements according to a preset filtration count, achieving standardization of the preparation process and ensuring consistent quality across different batches of nanofat. The combination of the recessed space and isolation baffle 10 not only compresses the device size but also effectively blocks potential liquid splashes, protecting operators from contamination and improving the biosafety and user experience of the entire preparation process.

[0032] Example 5 The subdivided filter 3 has needle end grooves 300 at both axial ends for connecting with the syringe barrel 5, and a sealing ring is provided in the needle end grooves 300; a plurality of connecting holes 301 are arranged in an array between the two needle end grooves 300.

[0033] Multiple connecting holes 301 are provided with an included angle between them and the central axis of the subdivision filter 3; the included angle between each connecting hole 301 and the central axis of the subdivision filter 3 is not equal; the included angle is 10°~20°.

[0034] The diameter of the connecting hole 301 gradually decreases from the middle to both ends.

[0035] There are multiple subdivision filters 3, and the diameter of the connecting hole 301 of each subdivision filter 3 is different; the multiple subdivision filters 3 are selectively connected to the filter mounting base 2.

[0036] This embodiment features a refined internal structure design for the subdivided filter. The connecting holes 301 are angled at unequal angles of 10° to 20° with the central axis, and the pore diameter gradually decreases from the center to both ends. This inclined and variable-diameter channel design generates complex turbulence and shear forces when the fat solution passes through the filter, which helps to further break up fat clumps and achieve a finer emulsification effect. Simultaneously, the variable-diameter structure has a self-cleaning function, reducing the probability of clogging. Furthermore, multiple subdivided filters with different connecting hole diameters 301 are provided for selection and connection, allowing the device to adapt to the varying needs for nano-fat particle size in different clinical scenarios. Medical personnel can select the appropriate subdivided filter 3 according to the characteristics of the treatment site, optimizing particle fineness while ensuring fat survival rate, thus enhancing the clinical applicability of the device and the adjustability of treatment effects.

[0037] Specific usage process The specific usage process of this nanofat preparation device is as follows: Preparation: The operator first selects a suitable pore size from multiple alternative fine filters 3 according to clinical needs, such as the required size of fat particles, and installs it into the filter mounting seat 2 on the preparation platform 1, ensuring that the elastic element 8 and the vibrator 9 are in place.

[0038] Install the syringe: Two syringes 5 loaded with the adipose tissue to be treated are placed into the limiting seats of the syringe limiting assembly 4, and the clamping member 400 is pressed down and locked by the buckle to ensure that the end face of the syringe abuts against the rectangular block 701 of the piston rod drive assembly 7. The cross-shaped piston rod 6 is inserted into the piston rod drive assembly 7 and enters the syringe 5.

[0039] Parameter settings: Close the isolation baffle 10 at the top of the preparation platform 1. Set the preset filtration number, i.e., the number of piston reciprocating movements, and the working interval and running time of the vibrator 9 through the controller 11.

[0040] Start the preparation: The starting device, controller 11, drives the motor in the piston rod drive assembly 7 to rotate the drive wheel 700, causing the cross-shaped piston rod 6 to reciprocate within the two syringe barrels 5, pushing the fat back and forth between the barrels and through the fine filter 3. At the same time, the vibrator 9 starts at set intervals to prevent the filter from clogging.

[0041] Completed and collected: The device automatically stops after the preset number of filtrations is reached. Open the isolation baffle 10, release the syringe limiting component 4, and remove one of the syringes 5 containing the prepared nanofat, which can then be used for subsequent clinical transplantation or treatment.

[0042] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A nanolipid preparation device, characterized by, It includes: The preparation platform (1) is provided with a filter mounting base (2), and a fine filter (3) is detachably installed inside the filter mounting base (2); Two syringes (5) are connected to the two ends of the subdivided filter (3) and are arranged coaxially opposite each other; each syringe (5) is provided with a syringe limiting assembly (4) connected to the preparation platform (1) on its outer side, and is provided with a cross-shaped piston rod (6) inside it. Two piston rod drive assemblies (7) are provided corresponding to the cross-shaped piston rod (6), and each assembly has a channel for the cross-shaped piston rod (6) to pass through. A drive wheel (700) is provided in the channel, which contacts the horizontal outer surface of the cross edge of the cross-shaped piston rod (6). The drive wheel (700) is connected to a drive motor located in the piston rod drive assembly (7). The drive motor is used to drive the drive wheel (700) to rotate so as to drive the cross-shaped piston rod (6) to move inside the syringe barrel (5).

2. The nanofat preparation apparatus as described in claim 1, characterized in that: The cross-shaped edge includes a left edge (600) and a right edge (601); both the left edge (600) and the right edge (601) include an upper horizontal outer surface and a lower horizontal outer surface; The upper and lower horizontal outer surfaces of the left edge (600) are each provided with a drive wheel (700) and a drive motor. The upper and lower horizontal outer surfaces of the right edge (601) are each provided with a drive wheel (700) and a drive motor.

3. The nanofat preparation apparatus as described in claim 1, characterized in that: The piston rod drive assembly (7) also includes a rectangular block (701), which has a circular channel at its center; the rectangular block (701) abuts against the end face of the syringe barrel (5) on the side axially close to the syringe barrel (5); the rectangular block (701) is connected to the preparation platform (1) by screws.

4. The nanofat preparation apparatus as described in claim 1, characterized in that: The syringe limiting assembly (4) includes a limiting seat and a clamping member (400), and the top of the limiting seat is provided with a semi-circular groove; One end of the clamping member (400) is hinged to the top of the limiting seat, and the other end has a buckle that engages with the top of the limiting seat; the clamping member (400) also has a semi-circular groove that engages with the syringe barrel (5), and a rubber pad is provided in the semi-circular groove.

5. The nanofat preparation apparatus as described in claim 1, characterized in that: The filter mounting base (2) is provided with a mounting groove; elastic elements (8) and vibrators (9) are respectively provided on both sides of the mounting groove, which are perpendicular to the axial direction of the subdivided filter (3).

6. The nanofat preparation apparatus as described in claim 1, characterized in that: The subdivided filter (3) has needle end grooves (300) at both ends of its axial direction for connecting with the syringe barrel (5), and a sealing ring is provided in the needle end groove (300); a plurality of connecting holes (301) are arranged in an array between the two needle end grooves (300).

7. The nanofat preparation apparatus as described in claim 6, characterized in that: The multiple connecting holes (301) are provided with an angle between them and the central axis of the subdivision filter (3); the angle between each connecting hole (301) and the central axis of the subdivision filter (3) is not equal; the angle is 10°~20°.

8. The nanofat preparation apparatus as described in claim 7, characterized in that: The diameter of the connecting hole (301) gradually decreases from the middle to both ends.

9. The nanofat preparation apparatus as described in claim 6, characterized in that: The number of subdivision filters (3) is multiple, and the diameter of the connecting hole (301) of each subdivision filter (3) is different; the multiple subdivision filters (3) are selectively connected to the filter mounting base (2).

10. The nanofat preparation apparatus as described in claim 5, characterized in that: The preparation platform (1) is provided with a recessed space, and the filter mounting base (2), subdivided filter (3), syringe syringe (5), syringe limiting assembly (4), cross-shaped piston rod (6) and two piston rod drive assemblies (7) are installed in the recessed space. The top of the recessed space is provided with a hinged isolation baffle (10). The preparation platform (1) is also equipped with a controller (11), which is electrically connected to the piston rod drive assembly (7) and the vibrator (9), and is used to control the number of times the piston rod drive assembly (7) drives the cross-shaped piston rod (6) to move in the syringe barrel (5) according to the preset number of filtrations, and to start the vibrator (9) to run for a preset time at a designed interval.

Images