Automatic suction syringe

Abstract

The invention belongs to the technical field of medical equipment, and discloses an automatic suction syringe which comprises a shell and a syringe body and further comprises a pulling mechanism arranged in the shell; the pulling mechanism comprises a square shell fixedly connected to the interior of the shell, and a first threaded rod is slidably connected to the interior of the square shell. A motor is controlled to start, the motor drives a second gear and a first gear to rotate, a first threaded rod retracts into a square shell, the first threaded rod pulls a mounting shell, a micro vacuum pump and a suction cup to move, the suction cup pulls a piston rod to move, negative pressure is generated, and liquid medicine is sucked into an injector body from a medicine bottle through a needle head; finally, a first threaded rod pulls a piston rod to move through a driving motor, liquid medicine is sucked, the suction amount of the liquid medicine is monitored and controlled in real time through an inductor, and then the work intensity of medical workers is reduced; the accuracy of the suction dose is improved, and the risk of medical accidents is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, in particular to an automatic aspiration syringe. Background Art

[0002] A syringe is a common medical device consisting of a barrel with a small hole at the front and a matching piston rod. Syringes are used to inject small amounts of liquids or gases into or extract them from otherwise inaccessible areas. When the piston rod is pulled out, the liquid or gas is drawn in through the small hole at the front of the barrel, and when the piston rod is pushed in, the liquid or gas is squeezed out. The process of extracting or injecting gas or liquid using a syringe and needle is called an injection. Currently, most traditional syringes still rely on manual aspiration. Medical staff need to hold the syringe tightly with one hand and slowly pull the piston rod with the other hand to draw the liquid from the vial into the syringe. However, this seemingly simple manual aspiration method actually brings many problems in actual operation. The most prominent one is the difficulty in controlling the amount of liquid medicine extracted. Since manual operation relies entirely on the personal experience and feel of medical staff, and lacks precise metering assistance, it is difficult to achieve accurate extraction of liquid medicine. Different medical staff have different operating strength and speed. In order to ensure that the amount of medicine extracted is as close to the required dose as possible, medical staff have to repeatedly measure and adjust, which consumes a lot of time and energy. In addition, the reduced accuracy of the aspiration dose directly increases the risk of medical accidents. Summary of the Invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides an automatic aspiration syringe.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic aspiration syringe, comprising a housing and a syringe body, and further comprising: a pulling mechanism disposed inside the housing; The pulling mechanism includes a square shell fixedly connected to the interior of the housing, a threaded rod 1 is slidably connected to the interior of the square shell, a gear 1 located on the surface of the threaded rod 1 is rotatably connected to the interior of one end of the square shell, and the gear 1 is threadedly connected to the threaded rod 1, a motor is fixedly installed on one side of the outer surface of the square shell, a gear 2 meshing with the gear 1 is fixedly installed on the output end of the motor, and a mounting shell is fixedly installed on one end of the threaded rod 1; The fixing assembly is arranged inside the mounting shell and can fix the piston rod inside the syringe body.

[0005] Preferably, the fixing assembly includes a micro vacuum pump fixedly connected to the inside of the mounting shell, a suction cup is fixedly mounted on one end of the mounting shell, and the micro vacuum pump is connected to the suction cup through a pipeline.

[0006] Preferably, it also includes: A resistance mechanism is arranged inside the shell, and the resistance mechanism includes a sealing shell fixedly connected to the inside of the shell, a sealing block is slidably connected to the inside of the sealing shell, the sealing block and the shell are elastically connected by elastic member 1, a resistance plate is provided inside the shell and is located on the outer surface of the syringe body, the resistance plate and the shell are elastically connected by elastic member 2, a connecting block located inside the sealing block is fixedly installed on the top of the resistance plate, and the sealing shell is connected to the micro vacuum pump through a connecting hose.

[0007] Preferably, the surface of the sealing block is fully fitted with the inner wall of the sealing shell, and the opposite sides of the sealing block and the connecting block are both designed with inclined surfaces, and the two inclined surfaces are parallel.

[0008] Preferably, it also includes: A fixing mechanism is provided inside the housing, the fixing mechanism comprising a mounting plate fixedly connected to the interior of the housing, a threaded rod 2 being rotatably connected to the interior of the mounting plate, a surface of the threaded rod 2 being threadedly connected to a fixing shell, a limit block being slidably connected to the interior of the fixing shell, and a third elastic member being elastically connected between the limit block and the fixing shell; The trigger mechanism is arranged at one end of the second threaded rod and can drive the second threaded rod to rotate.

[0009] Preferably, the interior of the mounting plate is rotatably connected to a limiting ring located on the second surface of the threaded rod, and the surface of the limiting ring fits against the inner wall of the mounting plate, and the limiting ring is fixedly connected to the second threaded rod.

[0010] Preferably, the trigger mechanism includes a connecting rod fixedly connected to one end of the threaded rod, a sliding groove is provided on the surface of the connecting rod, a sliding shell is slidably sleeved on the surface of the connecting rod, the interior of the sliding shell is rollingly connected to a ball located inside the sliding groove, and the sliding shell is elastically connected to the shell through elastic member four.

[0011] Preferably, the chute is of curved design, the ball is of smooth design, and the surface of the ball fits the inner wall of the chute.

[0012] Preferably, it also includes: A protective component is arranged at the other end of the outer surface of the syringe body. The protective component is fixedly connected to the circular shell at the other end of the outer surface of the syringe body. The interior of the circular shell is slidably connected to the protective shell. The circular shell and the protective shell are elastically connected by elastic member five.

[0013] Preferably, it also includes: The support assembly is arranged inside the shell, and the support assembly includes a support groove opened inside the shell, a support block is slidably connected inside the support groove, and one end of the support block is fixedly connected to the surface of the mounting shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention starts by controlling the motor, which drives gears 2 and 1 to rotate, causing threaded rod 1 to retract into the interior of the square shell. Threaded rod 1 then pulls the mounting shell, the micro vacuum pump, and the suction cup to move, which in turn pulls the piston rod to move, generating negative pressure, causing the drug solution to be drawn from the medicine bottle through the needle into the syringe body. Finally, threaded rod 1 is driven by the motor to pull the piston rod to move, thereby drawing the drug solution. A sensor is used to monitor and control the amount of drug solution drawn in real time, thereby reducing the workload of medical staff, improving the accuracy of the drawn dose, and reducing the risk of medical accidents. The present invention is that when the micro vacuum pump extracts the air inside the suction cup, the extracted air passes through the connecting hose and enters the interior of the sealing shell. The flowing air pushes the sealing block to slide inside the sealing shell. When the sealing shell moves, it squeezes the elastic member 1, and the sealing block squeezes and pushes the connecting block to move. The connecting block pushes the contact plate to contact the surface of the syringe body. Finally, the air pushes the contact plate to contact the surface of the syringe body, thereby limiting the position of the syringe body, thereby ensuring the stability of liquid medicine extraction. The present invention presses the sliding shell to drive the ball to roll inside the slide groove. During the rolling process, the connecting rod will be driven to rotate, and the connecting rod will drive the threaded rod 2 to rotate, so that the threaded rod 2 will be driven to rotate inside the mounting plate. The fixed shell will move on the surface of the threaded rod 2, and the fixed shell will drive the limit block away from the baffle on the surface of the syringe body, thereby canceling the fixation of the syringe body. Finally, the sliding shell is pressed to shrink the limit block into the fixed shell, which makes it convenient for the operator to take out the syringe body, thereby improving the convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the housing of the present invention; Figure 3 This is a schematic diagram showing the pulling mechanism of the present invention; Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram; Figure 5 For the present invention Figure 3 An enlarged schematic diagram of point B in FIG. Figure 6 A schematic diagram showing the conflict mechanism of the present invention; Figure 7 This is a schematic diagram showing the fixing mechanism of the present invention; Figure 8 A schematic diagram showing the trigger mechanism of the present invention; Figure 9 This is a schematic diagram showing the protective component of the present invention.

[0016] Figure: 1, housing; 2, syringe body; 3, pulling mechanism; 301, square housing; 302, threaded rod 1; 303, gear 1; 304, motor; 305, gear 2; 306, mounting housing; 4, fixing assembly; 401, micro vacuum pump; 402, suction cup; 5, resistance mechanism; 501, sealing housing; 502, sealing block; 503, elastic member 1; 504, connecting block; 505, resistance plate; 506, elastic member 2; 507, connecting soft Tube; 6. Fixing mechanism; 601. Mounting plate; 602. Threaded rod 2; 603. Fixing shell; 604. Limiting block; 605. Elastic part 3; 7. Triggering mechanism; 701. Connecting rod; 702. Slide groove; 703. Sliding shell; 704. Ball; 705. Elastic part 4; 8. Protective assembly; 801. Circular shell; 802. Protective shell; 803. Elastic part 5; 9. Support assembly; 901. Support groove; 902. Support block; 10. Limiting ring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figures 1 to 9 As shown, the present invention provides an automatic aspiration syringe, comprising a housing 1 and a syringe body 2, and further comprising: A pulling mechanism 3 is provided inside the housing 1; The pulling mechanism 3 includes a square shell 301 fixedly connected to the interior of the housing 1. A threaded rod 1 302 is slidably connected to the interior of the square shell 301. A gear 1 303 located on the surface of the threaded rod 1 302 is rotatably connected to the interior of one end of the square shell 301. The gear 1 303 is threadedly connected to the threaded rod 1 302. A motor 304 is fixedly mounted on one side of the outer surface of the square shell 301. A gear 2 305 meshing with the gear 1 303 is fixedly mounted on the output end of the motor 304. A mounting shell 306 is fixedly mounted on one end of the threaded rod 1 302. The fixing assembly 4 is disposed inside the mounting shell 306 and is capable of fixing the piston rod inside the syringe body 2 .

[0019] According to the above solution, the operator installs the syringe body 2 into the housing 1, and one end of the piston rod inside the syringe body 2 enters the interior of the fixing assembly 4. The fixing assembly 4 can then be driven to fix one end of the piston rod. The amount of liquid medicine extracted by the syringe body 2 can then be set through the control panel on the surface of the housing 1. After the setting is completed, the needle at one end of the syringe body 2 can be inserted into the medicine bottle to be extracted, and the device can be driven. After the internal control circuit receives the command, the control motor 304 is started, and the motor 304 drives the gear 2 305 to rotate. Because the gear 2 305 is engaged with the mounting shell 306, the rotating gear 2 305 drives the gear 1 303 to rotate. Since the gear 1 303 is threadedly connected to the threaded rod 1 302, when the gear 1 303 rotates, the threaded rod 1 302 will shrink into the inside of the square shell 301, and the threaded rod 1 302 will pull the mounting shell 306 and the fixing component 4 to move. The fixed component 4 will pull the piston rod to move, generating negative pressure, so that the medicine liquid is drawn from the medicine bottle through the needle into the syringe body 2. During the suction process, the sensor inside the shell 1 will monitor the amount of medicine liquid in real time. When the set amount of medicine liquid is reached, the sensor will issue a stop command, and the issued command will be received by the control circuit, and then the device will stop the suction work. Finally, the motor 304 is driven to make the threaded rod 302 pull the piston rod to move, and the medicine liquid is sucked. The sensor is used to monitor and control the suction amount of the medicine liquid in real time, thereby reducing the workload of medical staff, improving the accuracy of the suction dose, and reducing the risk of medical accidents.

[0020] like Figure 3 and Figure 6 As shown, the fixing assembly 4 includes a micro vacuum pump 401 fixedly connected to the inside of the mounting shell 306 , a suction cup 402 is fixedly installed at one end of the mounting shell 306 , and the micro vacuum pump 401 and the suction cup 402 are connected through a pipeline.

[0021] The above solution is adopted: through the design of the fixing component 4, after one end of the piston rod inside the syringe body 2 enters the suction cup 402, the suction cup 402 can be driven to extract the air inside the micro vacuum pump 401, forming a negative pressure space, and then fixing the piston rod to ensure that the mounting shell 306 pulls the micro vacuum pump 401, the suction cup 402 and the piston rod to move.

[0022] like Figure 5 and Figure 6As shown, it also includes: a resistance mechanism 5, which is arranged inside the shell 1, and the resistance mechanism 5 includes a sealing shell 501 fixedly connected to the inside of the shell 1, and a sealing block 502 is slidably connected inside the sealing shell 501. The sealing block 502 and the shell 1 are elastically connected by an elastic member 503. A resistance plate 505 located on the outer surface of the syringe body 2 is provided inside the shell 1, and the resistance plate 505 and the shell 1 are elastically connected by an elastic member 506. The top of the resistance plate 505 is fixedly installed with a connecting block 504 located inside the sealing block 502. The sealing shell 501 is connected to the micro vacuum pump 401 through a connecting hose 507.

[0023] The above scheme is adopted: through the design of the resistance mechanism 5, when the micro vacuum pump 401 extracts the air inside the suction cup 402, the extracted air will pass through the connecting hose 507 and enter the inside of the sealing shell 501. As the air inside the sealing shell 501 increases, the sealing block 502 will be pushed to slide inside the sealing shell 501. When the sealing shell 501 moves, the elastic member 1 503 will be squeezed, and one end of the sealing block 502 will contact the surface of the connecting block 504, and then the connecting block 504 will be squeezed and pushed to move. When the connecting block 504 moves, the elastic member 2 506 will be stretched, and then the connecting block 504 will push the resistance plate 505 to resist the surface of the syringe body 2. Finally, the resistance plate 505 is pushed to resist the surface of the syringe body 2 by the air, and then the syringe body 2 can be limited, thereby ensuring the stability of the liquid extraction, and the length of the connecting hose 507 needs to be set long enough so that it will not get stuck when the micro vacuum pump 401 moves.

[0024] like Figure 6 and Figure 7 As shown, the present invention further includes: a fixing mechanism 6, which is arranged inside the housing 1, and the fixing mechanism 6 includes a mounting plate 601 fixedly connected to the interior of the housing 1, a second threaded rod 602 is rotatably connected to the interior of the mounting plate 601, a surface of the second threaded rod 602 is threadedly connected to a fixing shell 603, an interior of the fixing shell 603 is slidably connected to a limit block 604, and a third elastic member 605 is elastically connected between the limit block 604 and the fixing shell 603; The trigger mechanism 7 is disposed at one end of the second threaded rod 602 and is capable of driving the second threaded rod 602 to rotate.

[0025] With the above solution, through the design of the fixing mechanism 6, when the liquid medicine is aspirated and the syringe body 2 needs to be removed, the trigger mechanism 7 can be pressed to drive the second threaded rod 602 to rotate inside the mounting plate 601. Since the second threaded rod 602 is threadedly connected to the fixing shell 603, when the second threaded rod 602 rotates, the fixing shell 603 will move on the surface of the second threaded rod 602, and the fixing shell 603 will drive the limit block 604 away from the blocking piece on the surface of the syringe body 2, thereby canceling the fixation of the syringe body 2, and then the operator can remove the syringe body 2; At the same time, the unused syringe body 2 can be inserted into the interior of the shell 1 again, and then the baffle on the surface of the syringe body 2 will contact the surface of the limit block 604, and will push the limit block 604 to retract into the fixed shell 603. During the movement, the elastic part three 605 will be squeezed, and then the baffle will pass over the limit block 604. At this time, the compressed elastic part three 605 will push the limit block 604 to reset, thereby fixing the syringe body 2, and then the liquid medicine can continue to be sucked.

[0026] like Figure 7 and Figure 8 As shown, the trigger mechanism 7 includes a connecting rod 701 fixedly connected to one end of the threaded rod 2 602, a sliding groove 702 is provided on the surface of the connecting rod 701, a sliding shell 703 is slidably sleeved on the surface of the connecting rod 701, and the interior of the sliding shell 703 is rollingly connected to a ball 704 located inside the sliding groove 702, and the sliding shell 703 is elastically connected to the shell 1 through an elastic member 4 705.

[0027] The above solution is adopted: through the design of the trigger mechanism 7, the sliding shell 703 can be pressed, and the sliding shell 703 will slide on the surface of the connecting rod 701. When the sliding shell 703 moves, the elastic member 705 will be compressed, and then the sliding shell 703 will drive the ball 704 to roll inside the slide groove 702. During the rolling process, it will drive the connecting rod 701 to rotate, and the connecting rod 701 will drive the threaded rod 2 602 to rotate.

[0028] like Figure 9 As shown, it also includes: a protective component 8, which is arranged at the other end of the outer surface of the syringe body 2, and the protective component 8 is fixedly connected to the circular shell 801 at the other end of the outer surface of the syringe body 2. The inner part of the circular shell 801 is slidably connected to the protective shell 802, and the circular shell 801 and the protective shell 802 are elastically connected by an elastic member 803.

[0029] The above solution is adopted: through the design of the protective component 8, when aspirating the liquid medicine, one end of the protective shell 802 can be made to contact the medicine bottle, so that it shrinks into the inside of the circular shell 801, and the moving protective shell 802 will squeeze the elastic part five 803, and then the needle tip will be inserted into the inside of the medicine bottle. After the aspiration of the liquid medicine is completed, the compressed elastic part five 803 will push the protective shell 802 to reset, so that it wraps the needle tip to prevent the needle tip from injuring the operator.

[0030] like Figure 2 and Figure 8 As shown, it also includes: a support component 9, which is arranged inside the shell 1, and the support component 9 includes a support groove 901 opened inside the shell 1, and the support groove 901 is internally slidably connected to a support block 902, and one end of the support block 902 is fixedly connected to the surface of the mounting shell 306, and the internal rotation of the mounting plate 601 is connected to a limiting ring 10 located on the surface of the threaded rod 2 602, and the surface of the limiting ring 10 is in contact with the inner wall of the mounting plate 601, and the limiting ring 10 is fixedly connected to the threaded rod 2 602.

[0031] The above solution is adopted: through the design of the support component 9, when the mounting shell 306 moves, the support block 902 will slide inside the support groove 901, and then the support block 902 can limit and support the motor 304, and by limiting the motor 304, the threaded rod 1 302 can move smoothly. Through the design of the limiting ring 10, during the rotation of the threaded rod 2 602, the limiting ring 10 will be driven to rotate inside the mounting plate 601. Since the surface of the limiting ring 10 fits with the inner wall of the mounting plate 601, the threaded rod 2 602 can be limited and supported.

[0032] like Figure 6 、 Figure 8 As shown, the surface of the sealing block 502 is fully fitted with the inner wall of the sealing shell 501, the opposite sides of the sealing block 502 and the connecting block 504 are both designed with inclined surfaces, and the two inclined surfaces are parallel, the slide groove 702 is designed to be curved, the ball 704 is designed to be smooth, and the surface of the ball 704 is fitted with the inner wall of the slide groove 702.

[0033] The above solution is adopted: through the design of the sealing shell 501 and the sealing block 502, since the surface of the sealing block 502 is fully fitted with the inner wall of the sealing shell 501, it is convenient for the air to push the sealing block 502 to move, and the sealing block 502 and the connecting block 504 are both inclined on the opposite side, which can reduce the resistance between the connecting block 504 and ensure that the sealing block 502 can smoothly push the connecting block 504 to move, through the design of the slide groove 702 and the ball 704, since the slide groove 702 is a curved design, the ball 704 will move along the curved trajectory, thereby driving the connecting rod 701 to rotate, and the ball 704 is a smooth design to ensure the smoothness of the movement of the ball 704.

[0034] The working principle and use process of the present invention: First, the operator inserts the syringe body 2 into the housing 1. Then, the blocking piece on the surface of the syringe body 2 contacts the surface of the limit block 604 and pushes the limit block 604 to retract into the fixed shell 603. The blocking piece passes over the limit block 604. At this time, the compressed elastic member 3 605 pushes the limit block 604 back to its original position, thereby fixing the syringe body 2. After the syringe body 2 is installed inside the housing 1, one end of the piston rod inside the syringe body 2 enters the inside of the suction cup 402, and then the micro vacuum pump 401 can be driven to use negative pressure to fix the piston rod with the suction cup 402. Then, the amount of liquid to be extracted by the syringe body 2 can be set through the control panel on the surface of the housing 1. After the setting is completed, the needle at one end of the syringe body 2 can be inserted into the inside of the medicine bottle to be extracted, and the device can be driven. After the internal control circuit receives the command, the control motor 304 is started, and the motor 304 drives the gear As wheel 2 305 and gear 1 303 rotate, threaded rod 1 302 retracts into square housing 301. Threaded rod 1 302 pulls mounting housing 306, micro vacuum pump 401, and suction cup 402 to move. Suction cup 402 pulls piston rod to move, generating negative pressure, causing liquid medicine to be drawn from the vial through the needle into syringe body 2. During the aspiration process, a sensor inside housing 1 monitors the amount of liquid medicine in real time. When the set amount of liquid medicine is reached, the sensor issues a stop command, which is received by the control circuit, and the device stops aspiration. When the micro vacuum pump 401 extracts air from the suction cup 402, the extracted air passes through the connecting hose 507 and enters the sealing shell 501. The flowing air pushes the sealing block 502 to slide inside the sealing shell 501. When the sealing shell 501 moves, it squeezes the elastic member 1 503, and the sealing block 502 squeezes and pushes the connecting block 504 to move. When the connecting block 504 moves, the elastic member 2 506 is stretched, and then the connecting block 504 pushes the contact plate 505 to contact the surface of the syringe body 2, ensuring the stability of the syringe body 2 in sucking the liquid. When the liquid medicine is aspirated and the syringe body 2 needs to be taken out, the sliding shell 703 can be pressed to drive the ball 704 to roll inside the slide groove 702. During the rolling process, the connecting rod 701 will be driven to rotate, and the connecting rod 701 will drive the threaded rod 2 602 to rotate, so that it drives the threaded rod 2 602 to rotate inside the mounting plate 601. The fixed shell 603 will move on the surface of the threaded rod 2 602, and the fixed shell 603 will drive the limit block 604 away from the baffle on the surface of the syringe body 2, thereby canceling the fixation of the syringe body 2. Then the operator can take out the syringe body 2, and then the unused syringe body 2 can be inserted into the shell 1 again to continue the aspiration work.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic suction syringe, comprising a housing (1) and a syringe body (2), characterized in that: Also includes: A pulling mechanism (3) is arranged inside the housing (1); The pulling mechanism (3) comprises a square shell (301) fixedly connected to the interior of the housing (1), the interior of the square shell (301) is slidably connected to a threaded rod (302), one end of the square shell (301) is internally rotatably connected to a gear (303) located on the surface of the threaded rod (302), and the gear (303) is threadedly connected to the threaded rod (302), a motor (304) is fixedly mounted on one side of the outer surface of the square shell (301), a gear (305) meshing with the gear (303) is fixedly mounted on the output end of the motor (304), and a mounting shell (306) is fixedly mounted on one end of the threaded rod (302); A fixing assembly (4) is arranged inside the mounting shell (306) and is capable of fixing the piston rod inside the syringe body (2).

2. The automatic aspirating syringe according to claim 1, characterized in that: The fixing assembly (4) comprises a micro vacuum pump (401) fixedly connected to the interior of the mounting shell (306); a suction cup (402) is fixedly mounted on one end of the mounting shell (306); and the micro vacuum pump (401) and the suction cup (402) are connected via a pipe.

3. The automatic aspirating syringe according to claim 1, characterized in that Also includes: A resistance mechanism (5) is arranged inside the shell (1), the resistance mechanism (5) includes a sealing shell (501) fixedly connected to the inside of the shell (1), a sealing block (502) is slidably connected to the inside of the sealing shell (501), the sealing block (502) and the shell (1) are elastically connected via an elastic member 1 (503), a resistance plate (505) located on the outer surface of the syringe body (2) is provided inside the shell (1), the resistance plate (505) and the shell (1) are elastically connected via an elastic member 2 (506), a connecting block (504) located inside the sealing block (502) is fixedly installed on the top end of the resistance plate (505), and the sealing shell (501) is connected to the micro vacuum pump (401) via a connecting hose (507).

4. The automatic aspirating syringe according to claim 3, characterized in that: The surface of the sealing block (502) is fully fitted with the inner wall of the sealing shell (501), and the opposite sides of the sealing block (502) and the connecting block (504) are both designed with inclined surfaces, and the two inclined surfaces are parallel.

5. The automatic aspirating syringe according to claim 1, characterized in that: Also includes: A fixing mechanism (6) is arranged inside the housing (1), the fixing mechanism (6) comprising a mounting plate (601) fixedly connected to the inside of the housing (1), the mounting plate (601) being internally rotatably connected to a second threaded rod (602), the surface of the second threaded rod (602) being threadedly connected to a fixing shell (603), the fixing shell (603) being internally slidably connected to a limit block (604), and an elastic member (605) being elastically connected between the limit block (604) and the fixing shell (603); The trigger mechanism (7) is arranged at one end of the second threaded rod (602) and is capable of driving the second threaded rod (602) to rotate.

6. The automatic aspirating syringe according to claim 5, characterized in that: The interior of the mounting plate (601) is rotatably connected to a limiting ring (10) located on the surface of the second threaded rod (602), and the surface of the limiting ring (10) is in contact with the inner wall of the mounting plate (601), and the limiting ring (10) is fixedly connected to the second threaded rod (602).

7. The automatic aspirating syringe according to claim 5, characterized in that: The trigger mechanism (7) comprises a connecting rod (701) fixedly connected to one end of the second threaded rod (602), a sliding groove (702) being provided on the surface of the connecting rod (701), a sliding shell (703) being slidably sleeved on the surface of the connecting rod (701), a ball (704) located inside the sliding groove (702) being rollingly connected inside the sliding shell (703), and the sliding shell (703) being elastically connected to the housing (1) via an elastic member (705).

8. The automatic aspirating syringe according to claim 7, characterized in that: The slide groove (702) is of curved design, the ball (704) is of smooth design, and the surface of the ball (704) fits the inner wall of the slide groove (702).

9. The automatic aspirating syringe according to claim 1, characterized in that: Also includes: A protective component (8) is provided at the other end of the outer surface of the syringe body (2), the protective component (8) is fixedly connected to a circular shell (801) at the other end of the outer surface of the syringe body (2), the interior of the circular shell (801) is slidably connected to a protective shell (802), and the circular shell (801) and the protective shell (802) are elastically connected via an elastic member five (803).

10. The automatic aspirating syringe according to claim 1, characterized in that: Also includes: A support assembly (9) is arranged inside the housing (1), the support assembly (9) comprising a support groove (901) opened inside the housing (1), a support block (902) being slidably connected inside the support groove (901), and one end of the support block (902) being fixedly connected to the surface of the mounting shell (306).

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