Fat syringe

Abstract

The fat injector comprises a needle cylinder, a partition plate is fixedly arranged in the needle cylinder and divides the interior of the needle cylinder into a containing cavity and a compression cavity, a needle head communicated with the containing cavity is arranged at the end of the needle cylinder, a first one-way valve is arranged in the needle head, and a push rod is arranged at the other end of the needle cylinder in a sliding mode. The push rod penetrates through the needle cylinder and the partition plate and extends into the containing cavity, the push rod is slidably connected with the partition plate, a first piston is slidably arranged in the containing cavity, a second piston is slidably arranged in the compression cavity, the first piston is fixedly connected with the end of the push rod, and the push rod is fixedly sleeved with the second piston. A third one-way valve is arranged on the storage bottle, a communication assembly is arranged between the storage bottle and the needle cylinder, a second one-way valve is arranged on the communication assembly, the needle cylinder is provided with a ventilation pipe communicated with the interior of the compression cavity, and a pressure assembly for changing the pressure in the storage bottle is arranged on the ventilation pipe. The speed of the fat entering the accommodating cavity is accelerated, so that the injection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of syringes, in particular to a fat syringe. Background Art

[0002] Autologous fat transplantation is to suck out excess fat from the waist, abdomen, thighs, etc., and select complete fat cell particles after cutting-edge green centrifugation, purification, and purification to increase the survival rate of fat cells. During the fat transplantation process, a fat syringe is needed to inject the fat into the desired area.

[0003] A Chinese patent document with publication number CN116584985A discloses a syringe for fat filling, including a syringe made of stainless steel and sterilizable by high-pressure steam. The syringe is provided with an injection part for injection, and an adjustment part for controlling the injection flow of the injection part. The bottom of the syringe is provided with a connecting part for connection. Through the provided injection part and the adjustment part, the push rod is pinched to control the L-shaped clamping rod to release the limit on the ring, and the ring is rotated to control the direction of the pointer on the top of the ring, so that the rotation angle of the rotating shaft can be adjusted to control the injection amount of the entire syringe.

[0004] The disadvantage of the above disclosed solution is that when fat is extracted from the outside, it is not convenient to extract the fat into the housing of the syringe, resulting in reduced injection efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fat injector, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fat syringe comprises a syringe, a partition is fixedly arranged in the syringe, the partition divides the interior of the syringe into a accommodating chamber and a compression chamber, a needle connected to the accommodating chamber is arranged at one end of the syringe, a first one-way valve is arranged in the needle, a push rod is slidably arranged at the end of the syringe away from the needle, the push rod passes through the syringe and the partition in sequence and extends into the accommodating chamber, the push rod is slidably connected to the partition, a first piston is slidably arranged in the accommodating chamber, a second piston is slidably arranged in the compression chamber, the first piston is fixedly connected to the end of the push rod, the second piston is fixedly sleeved on the push rod, a storage bottle is arranged outside the syringe, a third one-way valve is arranged on the storage bottle, a connecting component is arranged between the storage bottle and the syringe, a second one-way valve is arranged on the connecting component, a ventilation pipe connected to the interior of the compression chamber is arranged on the outside of the syringe, and a pressure component for changing the internal pressure of the storage bottle is arranged on the ventilation pipe.

[0007] Furthermore, the pressure assembly includes an extrusion cylinder, one end of which is connected to the ventilation pipe, the side of the storage bottle facing the extrusion cylinder is made of elastic material, and a telescopic shaft is slidably arranged in the extrusion cylinder, which cooperates with one side of the elastic material of the storage bottle and changes the air pressure inside the storage bottle.

[0008] Furthermore, two fixing plates are symmetrically fixedly arranged on the outer side of the syringe, the extrusion cylinder is fixedly connected to the fixing plate close to the storage bottle, and the ventilation tube is fixedly connected to the fixing plate far away from the storage bottle.

[0009] Furthermore, the pressure assembly includes a second connecting tube, which passes through the storage bottle and is fixedly connected to the storage bottle. The third one-way valve is arranged in the second connecting tube. One end of the ventilation tube is movably mounted on the second connecting tube, and the ventilation tube is a hose.

[0010] Furthermore, two fixing plates are symmetrically fixedly arranged on the outer side of the syringe, and both fixing plates are fixedly connected to the ventilation pipe.

[0011] Furthermore, the connecting component includes a first connecting tube, one end of which is connected to the accommodating cavity, and the other end of which is connected to the storage bottle. A straw is provided at the bottom of the first connecting tube, and the straw extends to the interior of the storage bottle. A second one-way valve is arranged in the first connecting tube.

[0012] Furthermore, an opening is provided at one end of the syringe away from the needle, a baffle is fixedly arranged in the opening, a threaded sleeve is arranged on the baffle, the threaded sleeve passes through the baffle and is threadedly connected to the baffle, the push rod passes through the threaded sleeve and is slidably connected to the threaded sleeve, and the threaded sleeve cooperates with the second piston to adjust the capacity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A pressure assembly for changing the internal pressure of the storage bottle is provided on the vent pipe. The second piston moves along the compression chamber in a direction away from the needle and compresses the air in the compression chamber, thereby pressing the air into the extrusion cylinder through the vent pipe. The air in the extrusion cylinder pushes the telescopic shaft in the extrusion cylinder to extend, and the telescopic shaft extends and squeezes one side of the elastic material of the storage bottle, causing one side of the elastic material of the storage bottle to deform, thereby increasing the air pressure in the storage bottle. This facilitates the fat in the storage bottle to enter the accommodating chamber through the straw, speeding up the rate at which the fat enters the accommodating chamber, thereby improving the injection efficiency.

[0015] 2. The vent pipe is provided with a pressure assembly for changing the internal pressure of the storage bottle. The second piston moves along the compression chamber in a direction away from the needle and compresses the air in the compression chamber, thereby pressing the air into the storage bottle through the vent pipe, thereby increasing the air pressure in the storage bottle. This facilitates the fat in the storage bottle to enter the receiving chamber through the straw, speeds up the rate at which the fat enters the receiving chamber, and thus improves the injection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the first embodiment of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the first structural embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the second structural embodiment of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the second structural embodiment of the utility model.

[0020] In the figure: 1. syringe; 2. needle; 3. first one-way valve; 4. partition; 5. baffle; 6. first piston; 7. push rod; 8. connecting block; 9. threaded sleeve; 10. second piston; 11. ventilation pipe; 12. fixing plate; 13. extrusion cylinder; 14. second one-way valve; 15. first connecting pipe; 16. storage bottle; 17. straw; 18. third one-way valve; 19. second connecting pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-Figure 2 , this embodiment provides a technical solution: a fat injector, such as Figure 1 The position shown includes a syringe 1, in which a partition 4 is fixedly installed. The partition 4 divides the interior of the syringe 1 into a receiving chamber and a compression chamber, which are respectively located on the left and right sides of the syringe 1. A needle 2 connected to the receiving chamber is installed at the center of the end surface of the left end of the syringe 1. A first one-way valve 3 is installed in the needle 2. The first one-way valve 3 can make fat only come out of the syringe 1, but fat cannot enter the syringe 1 from the needle 2.

[0024] A push rod 7 is slidably mounted on the right end of the syringe 1, a baffle 8 is fixedly mounted on the right end of the push rod 7, the left end of the push rod 7 passes through the syringe 1 and the partition 4 from right to left and extends into the accommodating chamber, and the partition 4 is slidably mounted with the push rod 7. A first piston 6 is sealed and slidably mounted in the accommodating chamber, and a second piston 10 is sealed and slidably mounted in the compression chamber. The center of the first piston 6 is fixedly connected to the end of the push rod 7, and the second piston 10 is fixedly sleeved on the push rod 7.

[0025] An opening is provided on the end surface of the right end of the syringe 1, the opening is connected to the compression chamber, a baffle 5 is fixedly installed in the opening, a threaded sleeve 9 is horizontally installed on the baffle 5, the threaded sleeve 9 passes through the center of the baffle 5 and is threadedly installed with the baffle 5, and the left end of the threaded sleeve 9 extends into the compression chamber. The push rod 7 passes horizontally through the threaded sleeve 9 and is sealed and slidably installed with the threaded sleeve 9, and the threaded sleeve 9 cooperates with the second piston 10 to adjust the capacity of the accommodating chamber.

[0026] A storage bottle 16 is installed outside the syringe 1, and a third one-way valve 18 is installed on the storage bottle 16. The third one-way valve 18 can only allow fat to be added from the outside to the storage bottle 16. A connecting component is installed between the storage bottle 16 and the syringe 1, and a second one-way valve 14 is installed on the connecting component.

[0027] The connecting assembly includes a first connecting tube 15, which is fixedly installed on the outside of the syringe 1, and the top of the first connecting tube 15 is connected to the accommodating chamber. The bottom of the first connecting tube 15 is fixedly matched with the storage bottle 16, and the bottom of the first connecting tube 15 is connected to the storage bottle 16. The bottom of the first connecting tube 15 is sleeved with a suction tube 17, which extends to the inside of the storage bottle 16, and the bottom of the suction tube 17 is close to the bottom wall of the storage bottle 16. The second one-way valve 14 is installed in the first connecting tube 15, and the second one-way valve 14 can only allow fat from the storage bottle 16 to enter the accommodating chamber.

[0028] A vent pipe 11 communicating with the interior of the compression chamber is fixedly mounted on the outer side of the syringe 1 . The vent pipe 11 is L-shaped and a pressure assembly for changing the internal pressure of the storage bottle 16 is mounted on the vent pipe 11 .

[0029] The pressure assembly includes an extrusion barrel 13, one end of which is fixedly mounted with the end of the vent pipe 11, and the extrusion barrel 13 is connected with the vent pipe 11. Two fixing plates 12 are symmetrically fixedly mounted on the outside of the syringe 1, the extrusion barrel 13 passes through the left fixing plate 12 and is fixedly mounted with the left fixing plate 12, and the vent pipe 11 passes through the right fixing plate 12 and is fixedly mounted with the right fixing plate 12. The two fixing plates 12 respectively fix and guide the vent pipe 11 and the extrusion barrel 13.

[0030] The side of the storage bottle 16 facing the extrusion cylinder 13 is made of elastic material, which can be deformed by external force. A telescopic shaft is installed in the extrusion cylinder 13 for horizontal sliding, and the telescopic shaft cooperates with one side of the elastic material on the storage bottle 16 and changes the air pressure inside the storage bottle 16.

[0031] The working principle of a fat injector provided in this embodiment is as follows:

[0032] In the initial state, the first piston 6 is in contact with the left inner wall of the syringe 1 , and the second piston 10 is in contact with the right side of the partition 4 .

[0033] When in use, first inject fat into the storage bottle 16 through the third one-way valve 18, and rotate the threaded sleeve 9 according to the amount of fat to be injected, so that the threaded sleeve 9 moves horizontally along the axis of the syringe 1, and changes the distance between the left end of the threaded sleeve 9 and the baffle 5. Since the second piston 10 moves between the partition 4 and the left end of the threaded sleeve 9, the movement distance of the second piston 10 can be adjusted by rotating the threaded sleeve 9, thereby adjusting the movement distance of the first piston 6 in the accommodating chamber, and then adjusting the capacity of the accommodating chamber. Then pull the connecting block 8 to the right, the connecting block 8 drives the push rod 7 to move to the right, and the push rod 7 drives the first piston 6 and the second piston 10 to move to the right.

[0034] The first piston 6 moves to the right along the accommodating chamber to generate negative pressure in the accommodating chamber. At this time, the first one-way valve 3 is in a closed state, and the second one-way valve 14 is in an open state. Therefore, when negative pressure is generated in the accommodating chamber, suction is generated in the storage bottle 16 through the first connecting tube 15 and the suction tube 17, so that the fat in the storage bottle 16 is sucked into the accommodating chamber.

[0035] The second piston 10 moves rightward along the compression chamber and compresses the air in the compression chamber, thereby pressing the air into the extrusion cylinder 13 through the ventilation pipe 11. The air in the extrusion cylinder 13 pushes the telescopic shaft in the extrusion cylinder 13 to extend to the left. The telescopic shaft extends to the left and squeezes one side of the elastic material of the storage bottle 16, and causes one side of the elastic material of the storage bottle 16 to deform, thereby increasing the air pressure in the storage bottle 16, which is beneficial for the fat in the storage bottle 16 to enter the accommodating chamber through the straw 17.

[0036] When the right side of the second piston 10 abuts against the left side of the threaded sleeve 9, the fat is extracted from the storage bottle 16. During injection, the needle 2 is aligned with the position to be injected, and the connecting block 8 is pushed to the left. The push rod 7 drives the first piston 6 and the second piston 10 to move to the left along the syringe 1. At this time, the first one-way valve 3 is opened and the second one-way valve 14 is closed, so the first piston 6 can push the fat out through the needle 2 and complete the injection.

[0037] When the second piston 10 moves to the left, the pressure in the compression chamber and the vent pipe 11 decreases, and the telescopic shaft retracts into the extrusion cylinder 13 , so that the telescopic shaft in the extrusion cylinder 13 no longer squeezes one side of the elastic material of the storage bottle 16 .

[0038] Embodiment 2

[0039] See also Figure 3-Figure 4 This embodiment provides a technical solution: a fat injector, which is different from the first embodiment in that the pressure assembly includes a second connecting tube 19, which horizontally passes through the right side of the storage bottle 16 and is fixedly installed with the storage bottle 16, and the third one-way valve 18 is installed in the second connecting tube 19. Two fixing plates 12 are symmetrically fixedly installed on the outer side of the syringe 1, and the ventilation tube 11 passes through the two fixing plates 12 in sequence and is fixedly installed with the two fixing plates 12. The two fixing plates 12 play the role of fixing the ventilation tube 11.

[0040] The left end of the vent pipe 11 is movably sleeved on the right end of the second connecting pipe 19. The vent pipe 11 is a hose, which is convenient for the left end of the vent pipe 11 to be separated from the right end of the second connecting pipe 19.

[0041] The working principle of this embodiment is different from that of the first embodiment in that:

[0042] When in use, first separate the left end of the ventilation tube 11 from the right end of the second connecting tube 19, then inject the fat into the storage bottle 16 through the second connecting tube 19 and the third one-way valve 18, and after the injection, put the left end of the ventilation tube 11 on the right end of the second connecting tube 19.

[0043] According to the amount of fat to be injected, the threaded sleeve 9 is rotated and moved horizontally along the axis of the syringe 1. The threaded sleeve 9 can adjust the moving distance of the second piston 10, thereby adjusting the moving distance of the first piston 6 in the accommodating chamber, and then adjusting the capacity of the accommodating chamber.

[0044] Then, the connecting block 8 is pulled to the right, and the connecting block 8 drives the push rod 7 to move to the right, and the push rod 7 drives the first piston 6 and the second piston 10 to move to the right.

[0045] The first piston 6 moves to the right along the accommodating chamber to generate negative pressure in the accommodating chamber. At this time, the first one-way valve 3 is in a closed state, and the second one-way valve 14 is in an open state. Therefore, when negative pressure is generated in the accommodating chamber, suction is generated in the storage bottle 16 through the first connecting tube 15 and the suction tube 17, so that the fat in the storage bottle 16 is sucked into the accommodating chamber.

[0046] At the same time, the second piston 10 moves rightward along the compression chamber and compresses the air in the compression chamber, thereby pressing the air into the storage bottle 16 through the ventilation pipe 11, thereby increasing the air pressure in the storage bottle 16, which is conducive to the fat in the storage bottle 16 entering the accommodating chamber through the straw 17.

[0047] When the right side of the second piston 10 abuts against the left side of the threaded sleeve 9, the fat is extracted from the storage bottle 16. During injection, the needle 2 is aligned with the position to be injected, and the connecting block 8 is pushed to the left. The push rod 7 drives the first piston 6 and the second piston 10 to move to the left along the syringe 1. At this time, the first one-way valve 3 is opened and the second one-way valve 14 is closed, so the first piston 6 can push the fat out through the needle 2 and complete the injection.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fat injector, comprising a syringe (1), characterized in that: A partition (4) is fixedly arranged inside the syringe (1), and the partition (4) divides the interior of the syringe (1) into a receiving chamber and a compression chamber. A needle (2) communicating with the receiving chamber is arranged at one end of the syringe (1), and a first one-way valve (3) is arranged in the needle (2). A push rod (7) is slidably arranged at the end of the syringe (1) away from the needle (2), and the push rod (7) passes through the syringe (1) and the partition (4) in sequence and extends into the receiving chamber. The push rod (7) is slidably connected to the partition (4). A first piston (6) is slidably arranged in the receiving chamber, and a second piston (6) is slidably arranged in the compression chamber. The syringe (1) is provided with a piston (10), the first piston (6) is fixedly connected to the end of the push rod (7), the second piston (10) is fixedly sleeved on the push rod (7), a storage bottle (16) is arranged outside the syringe (1), a third one-way valve (18) is arranged on the storage bottle (16), a connecting component is arranged between the storage bottle (16) and the syringe (1), a second one-way valve (14) is arranged on the connecting component, a ventilation pipe (11) connected to the inside of the compression chamber is arranged outside the syringe (1), and a pressure component for changing the internal pressure of the storage bottle (16) is arranged on the ventilation pipe (11).

2. The fat injector according to claim 1, characterized in that: The pressure assembly comprises an extrusion cylinder (13), one end of which is connected to the ventilation pipe (11), the side of the storage bottle (16) facing the extrusion cylinder (13) is made of elastic material, a telescopic shaft is slidably arranged in the extrusion cylinder (13), the telescopic shaft cooperates with one side of the elastic material of the storage bottle (16) and changes the air pressure inside the storage bottle (16).

3. The fat injector according to claim 2, characterized in that: Two fixing plates (12) are symmetrically fixedly arranged on the outer side of the syringe (1), the extrusion cylinder (13) is fixedly connected to the fixing plate (12) close to the storage bottle (16), and the ventilation pipe (11) is fixedly connected to the fixing plate (12) far from the storage bottle (16).

4. The fat injector according to claim 1, characterized in that: The pressure assembly comprises a second connecting pipe (19), the second connecting pipe (19) passes through the storage bottle (16) and is fixedly connected to the storage bottle (16), a third one-way valve (18) is arranged in the second connecting pipe (19), one end of the ventilation pipe (11) is movably sleeved on the second connecting pipe (19), and the ventilation pipe (11) is a hose.

5. The fat injector according to claim 4, characterized in that: Two fixing plates (12) are symmetrically fixedly arranged on the outer side of the syringe (1), and the two fixing plates (12) are both fixedly connected to the ventilation pipe (11).

6. The fat injector according to claim 1, characterized in that: The connecting assembly comprises a first connecting tube (15), one end of which is connected to the accommodating chamber, and the other end of which is connected to the storage bottle (16). A suction tube (17) is sleeved on the bottom of the first connecting tube (15), and the suction tube (17) extends to the interior of the storage bottle (16). The second one-way valve (14) is arranged in the first connecting tube (15).

7. The fat injector according to claim 1, characterized in that: The syringe (1) has an opening at one end away from the needle (2), a baffle (5) is fixedly arranged in the opening, a threaded sleeve (9) is arranged on the baffle (5), the threaded sleeve (9) passes through the baffle (5) and is threadedly connected to the baffle (5), a push rod (7) passes through the threaded sleeve (9) and is slidably connected to the threaded sleeve (9), and the threaded sleeve (9) cooperates with a second piston (10) to adjust the capacity.

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