Micro sample injection needle washing device based on crank rocker mechanism and flexible clamp

Abstract

The invention discloses a micro sample injection needle washing device based on a crank rocker mechanism and a flexible clamp, and belongs to the technical field of medical detection equipment. The micro sample injection needle washing device comprises a shell, a driving assembly is arranged in the shell, and the outer wall of the shell is connected with a cleaning assembly; the cleaning assembly comprises a transmission mechanism, an extrusion mechanism, a micro sample injection needle, a sample injection needle clamp, a cleaning solvent bottle and a cleaning solvent bottle clamp, one end of the transmission mechanism is connected with the driving assembly, the other end of the transmission mechanism is fixed to the outer wall of the shell, and the end, fixed to the outer wall of the shell, of the transmission mechanism is connected with the extrusion mechanism; the outer wall of the shell is further fixedly connected with a sample injection needle clamp and a cleaning solvent bottle clamp, a micro sample injection needle is arranged on the sample injection needle clamp, the extrusion mechanism is connected with the top end of the micro sample injection needle, and a cleaning solvent bottle is arranged on the cleaning solvent bottle clamp; the driving assembly and the cleaning assembly are arranged, cleaning is more convenient and faster under mutual cooperation of the driving assembly and the cleaning assembly, and consumption of manpower and material resources can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of medical detection equipment, and in particular relates to a micro-injection needle washer based on a crank rocker mechanism and a flexible clamp. Background Art

[0002] The LGR liquid water isotope analyzer can measure the ratio of 18O / 16O to D / H in liquid water samples with extremely high accuracy; the fully automatic sampler configured in the analyzer can continuously measure liquid water isotopes without manual work; the fully automatic sampler uses a Hamilton 1.2ul high-precision automatic sampler to accurately extract the test sample. Although the test water sample will be filtered through a 0.45um pore diameter syringe filter, the sample will still contain impurities such as salt, calcium, and grease. And as the test progresses, impurities will gradually accumulate in the sample needle, causing the inner core of the sample needle to stick, the test to deviate, and even cause the sample needle to be unable to be pulled out. Therefore, before running the analyzer, it is necessary to manually clean the sample needle with a needle wash (1-methyl-2-pyrrolidone) until it feels smooth, round, without strong friction, and without obvious resistance when pulled out before it can be used for testing on the machine. When cleaning the injection needle, you must always be careful not to pull it beyond the maximum range and not to hit the bottom of the injection needle too hard, otherwise the needle wash will enter the inside of the needle body, affecting the extraction accuracy and reducing the service life of the injection needle. When washing the needle, it is also necessary to observe whether there are micro bubbles generated in the needle soaked in the needle wash, so as to determine whether there is adhesion in the inner core of the injection needle. Based on the above operating requirements, the researchers chose manual cleaning. If the injection needle has been tested and rinsed a lot, it often takes about 20 minutes to clean. If the injection needle has not been used for a long time, it needs to be manually washed for more than 2 hours. Therefore, how to provide a micro-injection needle washer based on a crank rocker mechanism and a flexible clamp that can be automatically cleaned is a problem that technicians in this field urgently need to solve. Summary of the invention

[0003] The main purpose of the present invention is to provide a micro-injection needle washer based on a crank rocker mechanism and a flexible clamp to solve the above technical problems. The device is provided with a driving component and a cleaning component, and the cleaning is more convenient and quick under the mutual cooperation of the driving component and the cleaning component, and the consumption of manpower and material resources can be reduced, so as to realize the automation of cleaning of the micro-injection needle.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A micro-injection needle washer based on a crank rocker mechanism and a flexible clamp, comprising a housing, a driving cavity is arranged inside the housing, a driving assembly is arranged inside the driving cavity, a cleaning assembly is connected to the outer wall of the housing, and the cleaning assembly is connected to the driving assembly;

[0006] The cleaning component includes a transmission mechanism, an extrusion mechanism, a micro-injection needle, an injection needle clamp, a cleaning solvent bottle and a cleaning solvent bottle clamp. One end of the transmission mechanism is connected to the driving component, and the other end of the transmission mechanism is fixed to the outer wall of the shell. One end of the transmission mechanism fixed to the outer wall of the shell is connected to the extrusion mechanism. The outer wall of the shell is also fixedly connected with the injection needle clamp and the cleaning solvent bottle clamp. The micro-injection needle is arranged on the injection needle clamp, the extrusion mechanism is connected to the top of the micro-injection needle, and the cleaning solvent bottle clamp is arranged on the cleaning solvent bottle.

[0007] Furthermore, the driving assembly includes a motor, a battery, a battery fixing block and a DC motor speed regulator. The output end of the motor passes through the outer wall of the shell and is connected to the transmission mechanism. The battery is fixed to the inner wall of the driving cavity through the battery fixing block. The DC motor speed regulator is fixed in the driving cavity. The DC motor speed regulator is electrically connected to the battery and the motor respectively.

[0008] Furthermore, the transmission mechanism includes a crank and a rocker, the crank is provided with a connecting hole, the crank is connected to the output end of the motor through the connecting hole, the crank is also provided with a first rocker mounting hole, the crank is rotatably connected to one end of the rocker through the first rocker mounting hole and a screw, the screw at the connection between the rocker and the crank is also provided with a bearing and a washer, the end of the rocker away from the crank is rotatably connected to the extrusion mechanism through a screw, and the screw at the connection between the rocker and the extrusion mechanism is also provided with a bearing and a washer.

[0009] Furthermore, the extrusion mechanism includes a linear guide, a guide slider, a piston push rod flexible clamp and a guide rail fixing block, the linear guide is fixedly arranged on the outer wall of the shell, the guide slider is provided with a sliding connection groove, the guide slider is slidably connected to the linear guide through the sliding connection groove, the guide rail fixing block is fixed on the guide slider, the guide rail fixing block is provided with a mounting groove, a second rocker mounting hole and a limit groove, the guide rail fixing block is connected to the rocker through the second rocker mounting hole, the piston push rod flexible clamp is formed by connecting a top block structure, a flexible structure and a bottom block structure in sequence, the top block structure at the top of the piston push rod flexible clamp is provided with a mounting protrusion, the piston push rod flexible clamp is connected to the mounting groove on the guide rail fixing block through the mounting protrusion, the bottom end of the bottom block structure of the piston push rod flexible clamp is provided with an extrusion groove, and is connected to the top end of the micro-injection needle through the extrusion groove at the bottom end of the piston push rod flexible clamp and the limit groove at the bottom end of the guide rail fixing block, and the flexible structure of the piston push rod flexible clamp is a mesh structure.

[0010] Furthermore, the injection needle clamp comprises an injection needle clamp base plate and an injection needle clamp movable plate, one end of the injection needle clamp base plate is hinged to one end of the injection needle clamp movable plate, the injection needle clamp base plate and the injection needle clamp movable plate are respectively provided with a first fixing hole at one end away from the hinge, the first fixing hole can be fixed by screw locking, the injection needle clamp base plate and the injection needle clamp movable plate are respectively provided with a first injection needle clamp groove and a second injection needle clamp groove at one side for clamping, the injection needle clamp base plate is fixedly provided on the outer wall of the shell, movable grooves are provided on both sides of the first injection needle clamp groove on the injection needle clamp base plate, and movable grooves are provided on both sides of the second injection needle clamp groove on the injection needle clamp movable plate.

[0011] Furthermore, the cleaning solvent bottle clamp includes a cleaning solvent bottle clamp base plate and a cleaning solvent bottle clamp movable plate, one end of the cleaning solvent bottle clamp base plate is hinged to one end of the cleaning solvent bottle clamp movable plate, the cleaning solvent bottle clamp base plate and the cleaning solvent bottle clamp movable plate are respectively provided with a second fixing hole at the end away from the hinge, the second fixing hole can be fixed by screw locking, the cleaning solvent bottle clamp base plate and the cleaning solvent bottle clamp movable plate are respectively provided with a first cleaning solvent bottle clamping groove and a second cleaning solvent bottle clamping groove on one side for clamping, the cleaning solvent bottle clamp base plate is fixedly set on the outer wall of the shell, the cleaning solvent bottle clamp base plate is provided with movable grooves on both sides of the first cleaning solvent bottle clamping groove, and the cleaning solvent bottle clamp movable plate is provided with movable grooves on both sides of the second cleaning solvent bottle clamping groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention is provided with a driving component and a cleaning component, and the cleaning is more convenient and quick under the cooperation of the driving component and the cleaning component, and the consumption of manpower and material resources can be reduced, so as to realize the automation of cleaning of the micro-injection needle;

[0014] The extrusion mechanism and the transmission mechanism are used to push the micro-injection needle piston up and down at the matching line of the driving assembly, so as to clean the micro-injection needle;

[0015] The injection needle clamp and the cleaning solvent bottle clamp can clamp the micro injection needle and the cleaning solvent bottle to ensure the normal cleaning of the injection needle;

[0016] With the cooperation of the motor and the DC motor speed regulator, the piston movement distance of the micro-injection needle in the present invention is more accurate;

[0017] The piston push rod flexible clamp adopts a flexible structure, which can protect the micro-injection needle and prevent the micro-injection needle from being broken when cleaning the micro-injection needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the back structure of the present invention.

[0021] Figure 3 Schematic diagram of the exploded structure of the crank rocker mechanism.

[0022] Figure 4 It is a structural diagram of the crank rocker mechanism.

[0023] Figure 5 Schematic diagram of the explosion structure of the sliding extrusion mechanism.

[0024] Figure 6 Schematic diagram of the structure of the injection needle fixture.

[0025] Figure 7 Schematic diagram of the structure of the cleaning solvent bottle fixture.

[0026] Among them, 1-housing, 2-crank, 2.1-connecting hole, 3-linear guide, 4-rocker, 4.1-bearing, 4.2-washer, 5-guide slider, 5.1-sliding connection groove, 6-piston push rod flexible clamp, 6.1-extrusion groove, 6.2-installation protrusion, 7-guide fixing block, 7.1-limiting groove, 7.2-installation groove, 8-micro injection needle, 9-injection needle clamp, 9.1-injection needle clamp bottom plate, 9.11-first injection Needle clamp slot, 9.2-injection needle clamp movable plate, 9.21-second injection needle clamp slot, 10-cleaning solvent bottle, 11-cleaning solvent bottle clamp, 11.1-cleaning solvent bottle clamp bottom plate, 11.11-first cleaning solvent bottle clamp slot, 11.2-cleaning solvent bottle clamp movable plate, 11.21-second cleaning solvent bottle clamp slot, 12-motor, 13-drive chamber, 14-battery, 15-battery fixing block, 16-DC motor speed regulator. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figures 1 to 7 As shown, the present invention provides a micro-injection needle washer based on a crank rocker mechanism and a flexible clamp, comprising a housing 1, a driving chamber 13 is provided inside the housing 1, a driving assembly is provided inside the driving chamber 13, a cleaning assembly is connected to the outer wall of the housing 1, and the cleaning assembly is connected to the driving assembly;

[0030] The cleaning component includes a transmission mechanism, an extrusion mechanism, a micro-injection needle 8, an injection needle clamp 9, a cleaning solvent bottle 10 and a cleaning solvent bottle clamp 11. One end of the transmission mechanism is connected to the driving component, and the other end of the transmission mechanism is fixed to the outer wall of the shell 1. One end of the transmission mechanism fixed to the outer wall of the shell 1 is connected to the extrusion mechanism. The outer wall of the shell 1 is also fixedly connected with the injection needle clamp 9 and the cleaning solvent bottle clamp 11. The micro-injection needle 8 is arranged on the injection needle clamp 9. The extrusion mechanism is connected to the top of the micro-injection needle 8. The cleaning solvent bottle clamp 11 is provided with the cleaning solvent bottle 10. The injection needle clamp 9 and the cleaning solvent bottle clamp 11 are both self-centering clamps. After clamping the micro-injection needle 8, the movement direction of the micro-injection needle 8 and the needle washer will be guaranteed to be consistent. The cleaning solvent bottle 10 is used to hold the cleaning solvent. Specifically, alcohol is used in this embodiment.

[0031] In this embodiment, the driving assembly includes a motor 12, a battery 14, a battery fixing block 15 and a DC motor speed regulator 16. The output end of the motor 12 passes through the outer wall of the shell 1 and is connected to the transmission mechanism. The battery 14 is fixed to the inner wall of the driving cavity 13 through the battery fixing block 15. The DC motor speed regulator 16 is fixed in the driving cavity 13. The DC motor speed regulator 16 is electrically connected to the battery 14 and the motor 12 respectively. The DC motor speed regulator 16 can adjust the speed of the motor 12. The motor 12 is driven by a 545 reduction motor with a maximum speed of 200 revolutions per minute.

[0032] In this embodiment, the transmission mechanism includes a crank 2 and a rocker 4. The crank 2 is provided with a connecting hole 2.1, and the crank 2 is connected to the output end of the motor 12 through the connecting hole 2.1. The crank 2 is also provided with a first rocker mounting hole. The crank 2 is rotatably connected to one end of the rocker 4 through the first rocker mounting hole and a screw. A bearing 4.1 and a washer 4.2 are also sleeved on the screw at the connection between the rocker 4 and the crank 2. The end of the rocker 4 away from the crank 2 is rotatably connected to the extrusion mechanism through a screw. A bearing 4.1 and a washer 4.2 are also sleeved on the screw at the connection between the rocker 4 and the extrusion mechanism. The bearing 4.1 and the washer 4.2 are used for the mutual cooperation of the crank 2, the rocker 4 and the guide rail fixing block 7 to ensure the normal operation of the rocker 4 and the guide rail fixing block 7 when the crank 2 rotates.

[0033] In this embodiment, the extrusion mechanism includes a linear guide 3, a guide slider 5, a piston push rod flexible clamp 6 and a guide fixing block 7. The linear guide 3 is fixedly arranged on the outer wall of the shell 1. The guide slider 5 is provided with a sliding connection groove 5.1. The guide slider 5 is slidably connected to the linear guide 3 through the sliding connection groove 5.1. The guide fixing block 7 is fixed on the guide slider 5. The guide fixing block 7 is provided with a mounting groove 7.2, a second rocker mounting hole and a limit groove 7.1. The guide fixing block 7 is connected to the rocker 4 through the second rocker mounting hole. The piston push rod flexible clamp 6 is formed by connecting a top block structure, a flexible structure and a bottom block structure in sequence. The top block structure at the top of the piston push rod flexible clamp 6 is provided with a mounting protrusion 6.2. The piston push rod flexible clamp 6 is connected to the mounting groove 7.2 on the guide rail fixing block 7 through the mounting protrusion 6.2. The bottom end of the bottom block structure of the piston push rod flexible clamp 6 is provided with an extrusion groove 6.1, which is connected to the top of the micro-injection needle 8 through the extrusion groove 6.1 at the bottom end of the piston push rod flexible clamp 6 and the limiting groove 7.1 at the bottom end of the guide rail fixing block 7. The flexible structure of the piston push rod flexible clamp 6 is a mesh structure; the flexible structure is made of ABS material, and a mesh structure with multiple trapezoidal holes is provided, which can have a certain bending deformation when subjected to force; when the resistance of the micro-injection needle 8 is large, there will be a flexible and recoverable deformation of 3mm to protect the micro-injection needle 8 from being damaged; when the resistance of the micro-injection needle 8 is too large or stuck, the piston top block of the micro-injection needle 8 will be broken from the root.

[0034] In this embodiment, the injection needle fixture 9 includes an injection needle fixture base plate 9.1 and an injection needle fixture movable plate 9.2. One end of the injection needle fixture base plate 9.1 is hinged to one end of the injection needle fixture movable plate 9.2. The injection needle fixture base plate 9.1 and the injection needle fixture movable plate 9.2 are both respectively provided with a first fixing hole at one end away from the hinge. The first fixing hole can be fixed by screw locking. The injection needle fixture base plate 9.1 and the injection needle fixture movable plate 9.2 are respectively provided with a first injection needle clamping groove 9.11 and a second injection needle clamping groove 9.21 on one side for clamping. The injection needle fixture base plate 9.1 is fixedly arranged on the housing 1 outer wall, movable grooves are arranged on both sides of the first injection needle clamping groove 9.11 on the bottom plate 9.1 of the injection needle clamp, and movable grooves are arranged on both sides of the second injection needle clamping groove 9.21 on the movable plate 9.2 of the injection needle clamp. The injection needle clamp 9 is made of 3D printing PLA material consumables. The movable grooves arranged on the injection needle clamp 9 can cooperate with the adjacent first injection needle clamping groove 9.11 or second injection needle clamping groove 9.21, so that the first injection needle clamping groove 9.11 and the second injection needle clamping groove 9.21 are clamped more gently when used. When clamping a glass injection needle, it can avoid the injection needle from being broken due to excessive holding force, and provide continuous holding force.

[0035] In this embodiment, the cleaning solvent bottle clamp 11 includes a cleaning solvent bottle clamp bottom plate 11.1 and a cleaning solvent bottle clamp movable plate 11.2, one end of the cleaning solvent bottle clamp bottom plate 11.1 is hinged to one end of the cleaning solvent bottle clamp movable plate 11.2, and the cleaning solvent bottle clamp bottom plate 11.1 and the cleaning solvent bottle clamp movable plate 11.2 are respectively provided with a second fixing hole at one end away from the hinge, and the second fixing hole can be fixed by screw locking, and the cleaning solvent bottle clamp bottom plate 11.1 and the cleaning solvent bottle clamp movable plate 11.2 are respectively provided with a first cleaning solvent bottle clamping groove 11.11 and a second cleaning solvent bottle clamping groove 11.21 on one side for clamping, and the cleaning solvent bottle clamp bottom plate 11.1 It is fixedly arranged on the outer wall of the shell 1, and movable grooves are arranged on both sides of the first cleaning solvent bottle clamping groove 11.11 on the bottom plate 11.1 of the cleaning solvent bottle clamp, and movable grooves are arranged on both sides of the second cleaning solvent bottle clamping groove 11.21 on the movable plate 11.2 of the cleaning solvent bottle clamp. The cleaning solvent bottle clamp 11 is made of 3D printing PLA material consumables. The movable grooves arranged on the cleaning solvent bottle clamp 11 can cooperate with the adjacent first cleaning solvent bottle clamping groove 11.11 and second cleaning solvent bottle clamping groove 11.21, so that the first cleaning solvent bottle clamping groove 11.11 and the second cleaning solvent bottle clamping groove 11.21 are clamped more gently during use, avoiding the cleaning solvent bottle from being broken due to excessive holding force, and providing continuous holding force.

[0036] A method for using a micro-injection needle washer based on a crank rocker mechanism and a flexible clamp:

[0037] Step 1, start needle washing, place the machine flat on the table, open the piston push rod flexible clamp 6, clamp the piston rod at the top of the micro-injection needle 8 in the piston push rod flexible clamp 6; clamp the micro-injection needle 8 in the injection needle clamp 9, and slightly tighten the nut on the screw in the injection needle clamp 9, so that the micro-injection needle 8 can slide slightly in the injection needle clamp 9;

[0038] Step 2, turn on the switch of the battery 14, and adjust the speed of the motor 12 to 10% of the motor 12 itself through the DC motor speed regulator 16, so that the rocker 4 rotates one circle, pushes the micro-injection needle 8 to the lowest point of the stroke, and then turns off the machine;

[0039] Step 3, tighten the nut on the injection needle clamp 9 to fix the micro injection needle 8;

[0040] Step 4, inserting the needle of the micro-injection needle 8 into the cleaning solvent bottle 10, and clamping the cleaning solvent bottle 10 on the cleaning solvent bottle fixture 11;

[0041] Step 5. Turn on the machine and adjust the speed to start washing needles.

[0042] Step 6, after cleaning, remove the needle, turn off the machine and lay it flat, remove the cleaning solvent bottle 10, open the injection needle clamp 9 and the piston push rod flexible clamp 6, and remove the piston rod at the top of the micro injection needle 8 from the piston push rod flexible clamp 6.

[0043] Working principle: The piston connecting rod part at the top of the micro-injection needle 8 is fixed by the extrusion groove 6.1 and the limit groove 7.1, the main body of the micro-injection needle 8 is clamped and fixed by the injection needle clamp 9, and the cleaning solvent bottle 10 is clamped and fixed by the cleaning solvent bottle clamp 11. The first injection needle clamp groove 9.11, the second injection needle clamp groove 9.21, the first cleaning solvent bottle clamp groove 11.11 and the second cleaning solvent bottle clamp groove 11.21 are all provided with movable grooves, which can prevent the micro-injection needle 8 and the cleaning solvent bottle 1 from being clamped due to excessive clamping pressure. 0 is damaged, the needle tip part at the bottom end of the micro-injection needle 8 is located just above the opening of the cleaning solvent bottle 10, and the battery 14 and the motor 12 are started when in use, and the DC motor speed regulator 16 can adjust the speed of the motor, and the rotation of the motor 12 drives the crank 2 to rotate, and the rotation of the crank 2 drives the rocker 4 to swing, and at the same time, the rocker 4 drives the guide slider 5, the guide fixing block 7 and the piston push rod flexible clamp 6 to move up and down, and the guide fixing block 7 and the piston push rod flexible clamp 6 will drive the piston connecting rod part at the top of the micro-injection needle 8 to move up and down to achieve needle washing.

[0044] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A micro-injection needle washer based on a crank rocker mechanism and a flexible clamp, characterized in that: The invention comprises a housing (1), a driving chamber (13) is provided inside the housing (1), a driving assembly is provided inside the driving chamber (13), a cleaning assembly is connected to the outer wall of the housing (1), and the cleaning assembly is connected to the driving assembly; The cleaning component comprises a transmission mechanism, an extrusion mechanism, a micro-injection needle (8), an injection needle fixture (9), a cleaning solvent bottle (10) and a cleaning solvent bottle fixture (11); one end of the transmission mechanism is connected to the driving component, and the other end of the transmission mechanism is fixed to the outer wall of the shell (1); one end of the transmission mechanism fixed to the outer wall of the shell (1) is connected to the extrusion mechanism; the outer wall of the shell (1) is also fixedly connected to the injection needle fixture (9) and the cleaning solvent bottle fixture (11); the micro-injection needle (8) is provided on the injection needle fixture (9); the extrusion mechanism is connected to the top end of the micro-injection needle (8); and the cleaning solvent bottle fixture (11) is provided on the cleaning solvent bottle (10).

2. A micro-injection needle washer based on a crank rocker mechanism and a flexible clamp according to claim 1, characterized in that: The drive assembly comprises a motor (12), a battery (14), a battery fixing block (15), and a DC motor speed regulator (16); the output end of the motor (12) passes through the outer wall of the housing (1) and is connected to the transmission mechanism; the battery (14) is fixed to the inner wall of the drive cavity (13) through the battery fixing block (15); the DC motor speed regulator (16) is fixed in the drive cavity (13); and the DC motor speed regulator (16) is electrically connected to the battery (14) and the motor (12), respectively.

3. A microinjection needle washer based on a crank rocker mechanism and a flexible clamp according to claim 2, characterized in that: The transmission mechanism comprises a crank (2) and a rocker (4); a connecting hole (2.1) is provided on the crank (2); the crank (2) is connected to the output end of the motor (12) through the connecting hole (2.1); a first rocker mounting hole is also provided on the crank (2); the crank (2) is rotatably connected to one end of the rocker (4) through the first rocker mounting hole and a screw; a bearing (4.1) and a washer (4.2) are also sleeved on the screw at the connection between the rocker (4) and the crank (2); an end of the rocker (4) away from the crank (2) is rotatably connected to the extrusion mechanism through the screw; a bearing (4.1) and a washer (4.2) are also sleeved on the screw at the connection between the rocker (4) and the extrusion mechanism.

4. A microinjection needle washer based on a crank rocker mechanism and a flexible clamp according to claim 3, characterized in that: The extrusion mechanism comprises a linear guide rail (3), a guide rail slider (5), a piston push rod flexible clamp (6) and a guide rail fixing block (7); the linear guide rail (3) is fixedly arranged on the outer wall of the housing (1); the guide rail slider (5) is provided with a sliding connection groove (5.1); the guide rail slider (5) is slidably connected to the linear guide rail (3) through the sliding connection groove (5.1); the guide rail fixing block (7) is fixed on the guide rail slider (5); the guide rail fixing block (7) is provided with a mounting groove (7.2), a second rocker mounting hole and a limit groove (7.1); the guide rail fixing block (7) is connected to the rocker (4) through the second rocker mounting hole; the piston push rod flexible clamp (6) and the guide rail fixing block (7) are fixedly arranged on the guide rail slider (5 ... The flexible clamp (6) is formed by sequentially connecting a top block structure, a flexible structure, and a bottom block structure. The top block structure at the top of the piston push rod flexible clamp (6) is provided with a mounting protrusion (6.2). The piston push rod flexible clamp (6) is connected to the mounting groove (7.2) on the guide rail fixing block (7) through the mounting protrusion (6.2). The bottom end of the bottom block structure of the piston push rod flexible clamp (6) is provided with an extrusion groove (6.1). The piston push rod flexible clamp (6) is connected to the top end of the microinjection needle (8) through the extrusion groove (6.1) at the bottom end of the piston push rod flexible clamp (6) and the limiting groove (7.1) at the bottom end of the guide rail fixing block (7). The flexible structure of the piston push rod flexible clamp (6) is a mesh structure.

5. The micro-injection needle washer based on a crank rocker mechanism and a flexible clamp according to claim 1, characterized in that: The injection needle fixture (9) comprises an injection needle fixture base plate (9.1) and an injection needle fixture movable plate (9.2), one end of the injection needle fixture base plate (9.1) is hinged to one end of the injection needle fixture movable plate (9.2), and the injection needle fixture base plate (9.1) and the injection needle fixture movable plate (9.2) are both provided with a first fixing hole at the end away from the hinge, and the first fixing hole can be fixed by screw locking, and the injection needle fixture base plate (9.1) and the injection needle fixture movable plate (9.2) are respectively provided with a first fixing hole. The clamp movable plate (9.2) is provided with a first injection needle clamping groove (9.11) and a second injection needle clamping groove (9.21) on one side thereof for clamping. The injection needle clamp base plate (9.1) is fixedly provided on the outer wall of the housing (1). The injection needle clamp base plate (9.1) is provided with movable grooves on both sides of the first injection needle clamping groove (9.11). The injection needle clamp movable plate (9.2) is provided with movable grooves on both sides of the second injection needle clamping groove (9.21).

6. The micro-injection needle washer based on a crank rocker mechanism and a flexible clamp according to claim 1, characterized in that: The cleaning solvent bottle clamp (11) includes a cleaning solvent bottle clamp base plate (11.1) and a cleaning solvent bottle clamp movable plate (11.2), one end of the cleaning solvent bottle clamp base plate (11.1) is hinged to one end of the cleaning solvent bottle clamp movable plate (11.2), and the cleaning solvent bottle clamp base plate (11.1) and the cleaning solvent bottle clamp movable plate (11.2) are both provided with a second fixing hole at the end away from the hinge, and the second fixing hole can be fixed by screw locking, and the cleaning solvent bottle clamp base plate (11.1) and the cleaning solvent bottle clamp movable plate (11.2) are respectively provided with a second fixing hole. The first cleaning solvent bottle clamp groove (11.11) and the second cleaning solvent bottle clamp groove (11.21) are respectively provided on one side of the clamping of the cleaning solvent bottle clamp movable plate (11.2); the cleaning solvent bottle clamp base plate (11.1) is fixedly arranged on the outer wall of the shell (1); movable grooves are provided on both sides of the first cleaning solvent bottle clamp groove (11.11) on the cleaning solvent bottle clamp base plate (11.1); movable grooves are provided on both sides of the second cleaning solvent bottle clamp groove (11.21) on the cleaning solvent bottle clamp movable plate (11.2).

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