A plant minimally invasive inoculation needle and method

Abstract

The application discloses a kind of plant minimally invasive inoculation needle and method, including organism, the detachable injection puncture device of top fixed body;The rear side of top of organism is equipped with sliding sleeve, sliding sleeve is equipped with the outer flexible clamping push rod that can slide in, sliding sleeve lower side is equipped with opening, opening is hinged with traction block, traction block top is equipped with the clamping protrusion that is cooperated with outer flexible clamping push rod, traction block top rear side is hinged with sliding sleeve, bottom is hinged with puncture control assembly;Outer flexible clamping push rod includes hard rod body and the rubber layer that is arranged at its outside.The one-way clamping relationship of traction block clamping protrusion and outer flexible clamping push rod is formed, clamps and advances when pressing, loosens and does not back off when resetting, realizes continuous step inoculation;Push rod is magnetically connected with piston rod, and puncture device is convenient to disassemble and assemble;Clamping and advancing are completed synchronously by traction block, and the application is suitable for plant minimally invasive continuous inoculation operation with compact structure, accurate feeding and labor-saving operation.

Description

Technical Field

[0001] This invention relates to the field of plant inoculation technology, specifically to a minimally invasive plant inoculation needle and method. Background Technology

[0002] Minimally invasive plant inoculation is an important technical means for biological control and disease management in agricultural production. It involves injecting small amounts of bacterial solution or vaccine into plant tissues such as stems using an inoculation device. With the large-scale development of facility agriculture, the volume of inoculation operations is large, the dosage per plant is small, and precision is required. This places higher demands on the ease of operation, dosage controllability, and continuous operation efficiency of inoculation devices. Existing plant inoculation devices mainly have the following problems: 1. Most of them adopt a single-push injection structure, which cannot achieve continuous step-by-step feeding and has poor single injection dose control accuracy; some devices with continuous push function are prone to piston retraction along with the transmission mechanism during reset, which causes the pushed bacterial solution to be drawn back into the syringe, resulting in a large deviation between the actual inoculation amount and the set value.

[0003] 2. The puncture device and the push rod are mostly connected by mechanical snaps or threads. When changing the puncture device, manual alignment, unlocking and locking are required, which is cumbersome and inefficient, and not conducive to large-scale continuous operation. In addition, the rigid connection is prone to hard impact at the moment of injection, causing piston wear or damage to the sealing structure.

[0004] 3. The clamping mechanism and the propulsion mechanism are often set up separately and driven by different components, resulting in a complex overall structure, large size, and high failure rate. In addition, there is a time difference between the clamping and propulsion actions, which can easily lead to problems such as insecure clamping and slippage of the push rod during propulsion, resulting in inaccurate feed. Summary of the Invention

[0005] To address the aforementioned shortcomings of the prior art, this invention provides a plant minimally invasive inoculation needle and method.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: A plant minimally invasive inoculation needle includes a body with an arc-shaped mounting part on the front top of the body, in which a detachable injection puncture device is fixed. A sliding sleeve is located on the rear top of the body, containing a slidable external flexible clamping push rod for driving the injection puncture device. An opening is located on the lower side of the sliding sleeve, with a traction block hinged to the opening. The top of the traction block has a locking protrusion that engages with the external flexible clamping push rod. The traction block can extend into the opening to engage with the external flexible clamping push rod. The rear top of the traction block is hinged and rotatably connected to the sliding sleeve. A puncture control component is hinged to the bottom of the traction block, which drives the traction block to clamp the external flexible clamping push rod within the sliding sleeve, moving it horizontally forward. The external flexible clamping push rod includes a rigid rod body and a rubber layer outside the rigid rod body. A sliding through hole is located on the rear top of the body for mounting the external flexible clamping push rod, with a clearance fit between the external flexible clamping push rod and the sliding through hole.

[0007] Furthermore, the puncture control assembly includes a button and a traction link located on the lower side of the machine body. The middle part of the button is rotatably connected to the machine body via a central pivot. The top of the button is rotatably connected to the traction link via a first pivot. The traction link is rotatably connected to the bottom of the traction block via a second pivot. The second pivot is connected to the rear side of the machine body via a reset spring.

[0008] Furthermore, the injection puncture device includes a piston cylinder, a piston, a piston rod, and a puncture needle. An outlet tube is provided on the front side of the piston cylinder, and the puncture needle is fixed on the outlet tube. The piston and piston rod are fixedly connected, and the piston and piston cylinder are interference-fitted or transition-fitted.

[0009] Furthermore, a front insertion plate is provided on the front side of the arc-shaped mounting part, and a vertical opening that mates with the front insertion plate is provided on the front insertion plate. Two rear limiting plates that mate with the end of the piston cylinder are fixed on the rear side of the arc-shaped mounting part.

[0010] Furthermore, at least three guide plates are evenly distributed on the outside of the piston rod, and the outside of the guide plates slides in conjunction with the inside of the piston cylinder.

[0011] Furthermore, a limiting flap is hinged to the top of the machine body. The limiting flap is used to fix the injection puncture device. The lower side of the limiting flap is provided with an arc-shaped part that fits with the injection puncture device. The limiting flap is magnetically attached to the machine body on the side away from the hinge end.

[0012] Furthermore, a bottom slide plate is fixed to the front bottom of the sliding sleeve, and sliding protrusions are provided on both sides of the bottom slide plate. The machine body is provided with a sliding groove that cooperates with the sliding protrusions.

[0013] Furthermore, the top front side of the traction block is provided with a slot that mates with the bottom slide plate, the top rear side of the traction block is provided with an upper swing shaft that mates with the body, and the bottom of the traction block is provided with a lower rotating shaft hole that connects to the second rotating shaft.

[0014] Furthermore, a second magnet is provided on the front side of the external flexible clamping push rod, and a first magnet that attracts the second magnet is provided on the rear side of the piston rod.

[0015] Furthermore, a support frame is provided on the front side of the machine body, and the support frame is in the shape of an isosceles trapezoid.

[0016] An inoculation method using a plant minimally invasive inoculation needle includes the following steps: S1. Open the limiting cover on the top of the machine body, put the injection puncture device into the arc-shaped mounting part on the front side of the machine body, so that the puncture needle is inserted into the vertical opening of the front insertion plate, and the rear end of the piston cylinder abuts against the rear limiting plate. S2. The snap-fit ​​limiting flip cover is magnetically fixed to the body, and the second magnet on the front side of the external flexible clamping push rod and the first magnet on the rear side of the piston rod attract each other. S3. Insert the puncture needle into the inoculation site of the plant, press the button, the button rotates around the central axis, and the traction block is pushed forward around the upper swing axis by the traction link. S4. The snap-fit ​​protrusion on the top of the traction block clamps the outer flexible clamping push rod upwards. At the same time, the snap-fit ​​drives the sliding sleeve to slide forward along the slide groove. The outer flexible clamping push rod drives the piston rod and piston forward through magnetic attraction. The inoculation solution is injected into the plant tissue by the puncture needle. S5. Release the button, the reset spring pulls the traction block and sliding sleeve back, the locking protrusion swings in the opposite direction with the traction block to release the outer flexible clamping push rod, and the outer flexible clamping push rod remains in the advancing position without retracting; S6. Press the button repeatedly to clamp the traction block in a new position and advance the outer flexible clamping push rod each time, so as to achieve continuous step-by-step pushing and complete continuous inoculation. S7. After vaccination, open the limiting cover and remove the injection puncture device from the arc-shaped mounting part, separating the first magnet from the second magnet.

[0017] The beneficial effects of this invention are: The unidirectional step-by-step clamping and pushing structure of this invention features a traction block with a locking protrusion at its top, which extends into the lower opening of the sliding sleeve to engage with the outer flexible clamping push rod. The locking slot at the front of the top of the traction block engages with the sliding plate at the bottom of the sliding sleeve, and the rear of the top is hinged to the machine body. When the button is pressed, the traction block swings forward around the hinge axis, the locking protrusion clamps the outer flexible clamping push rod upwards, and simultaneously the locking slot drives the sliding sleeve to slide forward, causing the clamped outer flexible clamping push rod to advance a short distance. When the button is released, the return spring pulls the traction block and sliding sleeve back, the locking protrusion swings in the opposite direction, releasing the outer flexible clamping push rod. The outer flexible clamping push rod, no longer restrained by the sliding sleeve, remains in the advanced position. Repeated pressing achieves continuous unidirectional step-by-step forward pushing of the outer flexible clamping push rod. This mechanism achieves a ratchet-like step feeding effect with a purely mechanical structure, without the need for additional one-way valves or clutches. The feed amount is stable and repeatable each time, and the inoculation solution that has been pushed out will not be drawn back due to the piston retraction during reset, ensuring the accuracy of the injection dosage.

[0018] This invention employs a magnetic non-rigid transmission connection. A second magnet is located on the front side of the flexible clamping push rod, and a first magnet is correspondingly located on the rear side of the piston rod, attracting each other. Power transmission is achieved through magnetic attraction between the first and second magnets, rather than through traditional mechanical snap-fit ​​or threaded connections. When installing the injection puncture device, simply place it into the arc-shaped mounting part; the front magnet of the flexible clamping push rod automatically aligns and engages with the rear magnet of the piston rod, requiring no additional alignment or locking operations. For disassembly, simply pull out the injection puncture device; the magnetic connection automatically separates. Furthermore, the magnetic connection, being a non-rigid transmission, possesses a certain degree of buffering and fault tolerance, absorbing the rigid impact at the initial moment of stepping feed and preventing damage from hard collisions between the piston and piston cylinder ends. If abnormal resistance is encountered during advancement, the magnetic connection also provides overload protection, preventing damage to the transmission mechanism due to excessive force. This structural design, combined with the detachable injection puncture device, enables rapid replacement and tool-free disassembly of the puncture device, significantly improving the efficiency of continuous inoculation operations.

[0019] The clamping and pushing integrated structure of this invention uses a traction block as a single component, simultaneously performing the functions of clamping the outer flexible clamping push rod and driving the sliding sleeve forward. When the traction block swings around the hinge axis on the rear side of the top, the locking protrusion on the top moves upward with the swing trajectory, naturally completing the clamping action of the outer flexible clamping push rod; at the same time, the locking slot on the front side of the top engages with the sliding plate at the bottom of the sliding sleeve, driving the sliding sleeve to make a horizontal linear movement forward with the swing. The clamping and pushing actions are completed synchronously by the same component in the same swing, with no time difference or gap between the two actions, resulting in fewer transmission links, a compact structure, and reliable linkage. During reverse swing, under the action of the return spring, the locking protrusion moves downward with the trajectory, naturally releasing the outer flexible clamping push rod, and the traction block synchronously drives the sliding sleeve to retract. The clamping release and the sliding sleeve retraction are also completed synchronously. This integrated structure avoids the need for additional space and transmission components required for separate clamping and propulsion mechanisms, making the entire puncture control assembly compact and with a low failure rate. At the same time, it ensures that the "clamp first, then propel" action logic is strictly followed in each step feed, preventing slippage caused by insufficient clamping during propulsion.

[0020] The sliding sleeve of this invention has a polytetrafluoroethylene sleeve fixed to its inner wall, resulting in lower surface friction and allowing the external flexible clamping push rod to slide smoothly within the sleeve. The locking protrusions on the traction block, in conjunction with the rubber layer on the outside of the external flexible clamping push rod, better drive the external flexible clamping push rod to achieve unidirectional step-by-step clamping within the sliding sleeve, thereby enabling the injection puncture device to perform continuous unidirectional step-by-step puncture and injection operations.

[0021] The present invention makes the arc-shaped mounting part on the body detachable and separable. By replacing the arc-shaped mounting part with different radii, it can meet the applicability of different models of disposable syringes, so that the present invention can use existing medical disposable syringes, thus improving its practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 Schematic diagram of the button, traction link, traction block, and sliding sleeve. Figure 1 ; Figure 5 Schematic diagram of the button, traction link, traction block, and sliding sleeve. Figure 2 ; Figure 6 The arc-shaped mounting part for the traction block; Figure 7 It is an arc-shaped mounting part.

[0023] The symbols for each component are as follows: 1. Body; 11. Front insertion plate; 12. Rear limiting plate; 13. Support frame; 2. Injection puncture device; 21. Piston cylinder; 23. Piston rod; 24. Puncture needle; 25. Guide plate; 26. First magnet; 3. Limiting flip cover; 4. Button; 41. Central rotating shaft; 42. First rotating shaft; 5. Traction link; 51. Second rotating shaft; 6. Traction block; 61. Snap-fit ​​protrusion; 62. Bay; 63. Upper swing shaft; 64. Lower rotating shaft hole; 7. Sliding sleeve; 71. Bottom sliding plate; 72. Sliding protrusion; 8. Reset tension spring; 9. External flexible clamping push rod; 91. Second magnet; 10. Arc-shaped mounting part. Detailed Implementation

[0024] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0025] Example: like Figures 1-2 As shown, the plant minimally invasive inoculation needle includes a body 1. An arc-shaped mounting part 10 is located on the front top of the body 1, and a detachable injection puncture device 2 is fixed within the arc-shaped mounting part 10. A sliding sleeve 7 is located on the rear top of the body 1, and a slidable external flexible clamping push rod 9 is located within the sliding sleeve 7. The external flexible clamping push rod 9 is used to drive the injection puncture device 2 to perform puncture operations. An opening is located on the lower side of the sliding sleeve 7, and a traction block 6 is hinged to the opening. The top of the traction block 6 has a locking protrusion 61 that engages with the external flexible clamping push rod 9. The traction block 6 can extend into the opening and engage with the external flexible clamping push rod 9. The rear top of the traction block 6 is hinged to the sliding sleeve 7, and a puncture control component is hinged to the bottom of the traction block 6. The puncture control component drives the traction block 6 to clamp the external flexible clamping push rod 9 within the sliding sleeve 7 and move it horizontally forward.

[0026] like Figure 3As shown, the injection puncture device 2 includes a piston cylinder 21, a piston, a piston rod 23, and a puncture needle 24. An outlet tube is provided on the front side of the piston cylinder 21, and the puncture needle 24 is fixed to the outlet tube. The piston and piston rod 23 are fixedly connected, and the piston and piston cylinder 21 are internally press-fitted or transition-fitted. A front insertion plate 11 is provided on the front side of the arc-shaped mounting part 10, with a vertical opening that mates with the front insertion plate 11. Two rear limiting plates 12 that mate with the end of the piston cylinder 21 are fixed on the rear side of the arc-shaped mounting part 10. A limiting flap 3 is hinged to the top of the body 1, used to fix the injection puncture device 2. An arc-shaped part that fits the injection puncture device 2 is provided on the lower side of the limiting flap 3, and the limiting flap 3 magnetically engages with the body 1 on the side away from the hinge end. The injection puncture device 2 is detachable, facilitating replacement or disinfection after each inoculation, avoiding cross-contamination between different plants, and is compatible with various sizes and volumes of inoculation solution. The vertical opening of the front insertion plate 11 provides radial positioning for the puncture needle 24 and the outlet tube, while the two rear limiting plates 12 provide rear-end limiting for the piston cylinder 21. This front-to-rear cooperation ensures that the position of the injection puncture device 2 is uniquely determined, preventing axial movement or radial deviation of the injection puncture device 2 during step-by-step pushing and ensuring the stability of the needle puncture needle 24's exit direction. The limiting flip cover 3 presses the injection puncture device 2 from above, and its lower arc-shaped part fits against the outer wall of the piston cylinder 21, increasing the contact area and making the fixation more secure. The free end of the flip cover magnetically engages with the machine body 1, making opening and closing convenient and allowing for quick one-handed operation when changing the injection puncture device 2.

[0027] At least three guide plates 25 are evenly distributed on the outside of the piston rod 23, and the outside of the guide plates 25 slides in engagement with the inside of the piston cylinder 21. These at least three evenly distributed guide plates 25 provide multi-point support along the axial direction of the piston rod 23, ensuring that the piston rod 23 always moves linearly along its axis within the piston cylinder 21, preventing the piston rod 23 from deviating, swaying, or jamming during step-by-step injection. The sliding engagement between the guide plates 25 and the inner wall of the piston cylinder 21 indirectly ensures the coaxiality and sealing of the piston and the inner wall of the piston cylinder 21, avoiding leakage of the inoculum or uneven injection resistance due to piston wear, and improving the accuracy and consistency of the injection dose per step.

[0028] like Figure 4 , 5As described in section 6, the puncture control assembly includes a button 4 and a traction rod 5 located on the lower side of the body 1. The middle part of the button 4 is rotatably connected to the body 1 via a central pivot 41. The top of the button 4 is rotatably connected to the traction rod 5 via a first pivot 42. The traction rod 5 is rotatably connected to the bottom of the traction block 6 via a second pivot 51. The second pivot 51 is connected to the rear side of the body 1 via a return spring 8. The body 1 is provided with a spring mounting post for mounting the return spring 8. When the button 4 is pressed, the traction block 6 swings around the upper swing shaft 63, engaging the protrusion 61 to clamp the outer flexible clamping push rod 9 upwards. At the same time, the locking slot 62 drives the sliding sleeve 7 to slide forward, and the clamped outer flexible clamping push rod 9 moves forward a distance. When button 4 is released, the reset spring 8 pulls the traction block 6 and the sliding sleeve 7 back, but the locking protrusion 61 swings in the opposite direction with the traction block 6, releasing the outer flexible clamping push rod 9. The outer flexible clamping push rod 9, no longer restrained by the sliding sleeve 7, remains in the advancing position. Repeated pressing allows for continuous unidirectional forward movement of the outer flexible clamping push rod 9, eliminating the need for re-clamping and repositioning each time, and continuously pushing the piston 22 for inoculation. The advancing distance of each press is determined by the stroke of button 4 and the lever transmission ratio, ensuring a stable and repeatable feed rate. The operator can precisely control the injection dosage of the inoculation solution by controlling the number of presses or the pressing depth, suitable for different plants and different inoculation amounts. During reset, the outer flexible clamping push rod 9 remains stationary, and the piston rod 23 and piston 22 do not retract. The already ejected inoculation solution will not be sucked back into the piston cylinder 21 due to piston retraction, avoiding dosage deviation and contamination caused by backflow, ensuring strict consistency between the actual inoculation amount and the advancing amount each time. The clamping and pushing actions are completed synchronously by the same component, the traction block 6. When swinging, the locking protrusion 61 clamps and the locking slot 62 drives the sliding sleeve 7 forward. When swinging in the opposite direction, it is released and retracted synchronously. There is no need to set up an additional clutch or one-way valve. The transmission links are few, the structure is compact, the action linkage is reliable, and the failure rate is low.

[0029] A bottom slide plate 71 is fixed to the front bottom of the sliding sleeve 7. Sliding protrusions 72 are provided on both sides of the bottom slide plate 71, and a groove is provided on the machine body 1 to mate with the sliding protrusions 72. The sliding protrusions 72 mate with the groove on the machine body 1 to provide precise horizontal guidance for the reciprocating motion of the sliding sleeve 7, preventing the sliding sleeve 7 from swaying or twisting during stepping and resetting. This ensures that the pushing direction of the outer flexible clamping push rod 9 is strictly aligned with the axis of the piston rod 23, avoiding magnetic disengagement or piston rod jamming due to directional deviation. The bottom slide plate 71 provides a mating surface for the latch 62 of the traction block 6, enabling the traction block 6 to reliably drive the sliding sleeve 7 in horizontal reciprocating motion, while also allowing the traction block 6 to swing relative to the sliding sleeve 7 to achieve clamping and releasing actions.

[0030] The top front side of the traction block 6 is provided with a slot 62 that cooperates with the bottom slide plate 71, the top rear side of the traction block 6 is provided with an upper swing shaft 63 that cooperates with the body 1, and the bottom of the traction block 6 is provided with a lower rotating shaft hole 64 that connects to the second rotating shaft 51.

[0031] The external flexible clamping push rod 9 includes a rigid rod body and a rubber layer disposed on the outside of the rigid rod body. A sliding through hole for mounting the external flexible clamping push rod 9 is provided on the rear top side of the machine body 1, and the external flexible clamping push rod 9 is clearance-fitted with the sliding through hole. A second magnet 91 is provided on the front side of the external flexible clamping push rod 9, and a first magnet 92 that attracts the second magnet 91 is provided on the rear side of the piston rod 23. The rubber layer on the outside of the external flexible clamping push rod 9 increases the coefficient of friction between it and the locking protrusion 61, making it less prone to slippage when the traction block 6 is clamped and pushed forward, ensuring accurate and stable feed amount for each step; the rubber layer also has a certain degree of elasticity, which can compensate for the clamping stroke tolerance of the locking protrusion 61, making the clamping more snug. The internal rigid rod body ensures that the external flexible clamping push rod 9 does not bend or deform during axial advancement, ensuring that the advance amount is accurately transmitted to the piston rod 23, and avoiding inaccurate step feed amount due to push rod deflection. The external flexible clamping push rod 9 is clearance-fitted with the sliding through hole. During the reset phase, when the sliding sleeve 7 retracts while the external flexible clamping push rod 9 remains stationary, the two can smoothly slide relative to each other, reducing reset resistance and ensuring that the sliding sleeve 7 can reliably return to its original position without driving the push rod. The first magnet 26 and the second magnet 91 magnetically attract each other to achieve power transmission without the need for mechanical clips. They automatically align and attract each other when the injection puncture device 2 is installed, and can be directly pulled out during disassembly. The magnetic connection has a buffering and fault-tolerant capability, which can absorb the rigid impact at the moment of the stepping feed and avoid damage from the hard collision between the piston 22 and the end of the piston cylinder 21. A polytetrafluoroethylene sleeve is fixed to the inner wall of the sliding sleeve 7, which has lower surface friction, allowing the external flexible clamping push rod 9 to slide smoothly within the sliding sleeve 7. The snap-fit ​​protrusion 61 on the traction block 6 works in conjunction with the rubber layer on the outside of the flexible clamping push rod 9 to better drive the flexible clamping push rod 9 to achieve unidirectional step-by-step clamping push within the sliding sleeve 7, thereby enabling the injection puncture device 2 to perform continuous unidirectional step-by-step puncture and injection operations.

[0032] A support frame 13, which is an isosceles trapezoid, is fixed to the front of the machine body 1. During puncture operations, the isosceles trapezoidal support frame 13 can be placed on the surface of the plant stem or on the operating table, providing stable support for the inoculation needle, reducing the operator's hand strain, and making the step-by-step puncture insertion smoother. The machine body 1 can be placed on a horizontal table via the handle that engages with the support frame 13, allowing the injection end of the puncture needle 24 to be away from the table surface, preventing contamination. The isosceles trapezoidal shape, narrower at the top and wider at the bottom, and with a low center of gravity, makes it less prone to tipping or slipping during support. The trapezoidal frame structure has an opening at the front, facilitating observation of the puncture needle 24's insertion position and depth, improving operational visibility and accuracy.

[0033] In this embodiment, a limiting rubber block can also be provided in the needle tube part of the puncture needle 24. By adjusting the position of the limiting rubber block, the insertion depth of the puncture needle 24 can be changed. The limiting rubber block is provided with a puncture needle hole that cooperates with the puncture needle 24. The puncture needle hole and the puncture needle 24 are subjected to interference or overfitting. The puncture depth of the puncture needle 24 can be easily adjusted by the limiting rubber block.

[0034] like Figure 7 As shown, in another embodiment, the arc-shaped mounting part 10 on the body 1 is designed to be detachable and separable. By replacing the arc-shaped mounting part 10 with different radii, it can be adapted to different models of disposable syringes, allowing the invention to use existing medical disposable syringes and improving its practicality. The bottom of the arc-shaped mounting part 10 is rectangular, and the body 1 has a rectangular groove that mates with the bottom of the arc-shaped mounting part 10. The arc-shaped mounting part 10 and the body 1 can be connected by snap-fit ​​or screw locking.

[0035] Working process and its principle: S1: Before use, open the limiting cover 3 and place the injection puncture device 2 into the arc-shaped mounting part 10 on the front of the top of the machine body 1. It is positioned by the front insertion plate 11 and the rear limiting plate 12. Then, snap the limiting cover 3 into place magnetically. At this time, the second magnet 91 on the front side of the outer flexible clamping push rod 9 and the first magnet 26 on the rear side of the piston rod 23 are attracted to form a transmission connection. S2: When button 4 is pressed, button 4 rotates around the central pivot 41, and pushes the traction block 6 to swing forward around the upper swing axis 63 via the traction link 5. The block engages with the protrusion 61 to clamp the outer flexible clamping push rod 9 inside the sliding sleeve 7. At the same time, the locking slot 62 of the traction block 6 drives the sliding sleeve 7 to slide forward along the slide groove. The clamped outer flexible clamping push rod 9 moves forward accordingly. The piston rod 23 and piston 22 are pushed forward by magnetic attraction. The inoculation solution is discharged from the puncture needle 24, completing one feeding. S3: When button 4 is released, the reset spring 8 pulls the traction block 6 and the sliding sleeve 7 backward. The locking protrusion 61 swings in the opposite direction with the traction block 6 and releases the outer flexible clamping push rod 9. The outer flexible clamping push rod 9 does not retract with the sliding sleeve 7 because it loses the clamping constraint, and remains in the advancing position. S4: Press button 4 repeatedly, and the traction block 6 clamps the outer flexible clamping push rod 9 in the new position and moves it forward a distance each time. When resetting, it is released and retracts on its own, realizing the continuous unidirectional stepping of the outer flexible clamping push rod 9, thereby continuously pushing the piston 22 to complete the inoculation injection.

[0036] A method for inoculating plants using a minimally invasive inoculation needle includes the following steps: S1. Open the limiting cover 3 on the top of the machine body 1, put the injection puncture device 2 into the arc-shaped mounting part 10 on the front side of the machine body 1, so that the puncture needle 24 is inserted into the vertical opening of the front insertion plate 11, and the rear end of the piston cylinder 21 abuts against the rear limiting plate 12. S2, the snap-fit ​​limiting flip cover 3 is magnetically fixed to the body 1, and the second magnet 91 on the front side of the external flexible clamping push rod 9 and the first magnet 26 on the rear side of the piston rod 23 are attracted to each other. S3. Insert the puncture needle 24 into the inoculation site of the plant, press the button 4, the button 4 rotates around the central pivot 41, and pushes the traction block 6 to swing forward around the upper swing axis 63 via the traction link 5. S4. The snap-fit ​​protrusion 61 at the top of the traction block 6 clamps the outer flexible clamping push rod 9 upward. At the same time, the snap-fit ​​62 drives the sliding sleeve 7 to slide forward along the slide groove. The outer flexible clamping push rod 9 is magnetically attracted to drive the piston rod 23 and piston 22 forward. The inoculation solution is injected into the plant tissue by the puncture needle 24. S5. Release button 4, reset spring 8 pulls traction block 6 and sliding sleeve 7 back, the locking protrusion 61 swings in the opposite direction with traction block 6 and releases the outer flexible clamping push rod 9, the outer flexible clamping push rod 9 remains in the advancing position and does not retract. S6. Press button 4 repeatedly, and the traction block 6 will clamp and push the outer flexible clamping push rod 9 into the new position each time to achieve continuous step-by-step pushing and complete continuous inoculation. S7. After the inoculation is completed, open the limiting cover 3 and take out the injection puncture device 2 from the arc-shaped mounting part 10. The first magnet 26 and the second magnet 91 are separated.

Claims

1. A plant minimally invasive inoculation needle, characterized in that, The device includes a body (1), on the front side of the top of the body (1) is an arc-shaped mounting part (10), and a detachable injection puncture device (2) is fixed inside the arc-shaped mounting part (10); a sliding sleeve (7) is provided on the rear side of the top of the body (1), and a slidable external flexible clamping push rod (9) is provided inside the sliding sleeve (7), which is used to drive the injection puncture device (2) to perform puncture operations; an opening is provided on the lower side of the sliding sleeve (7), and a hinge is provided at the opening. The traction block (6) has a snap-fit ​​protrusion (61) on its top that engages with the external flexible clamping push rod (9). The traction block (6) can extend into the opening and engage with the external flexible clamping push rod (9). The rear top of the traction block (61) is hinged to the sliding sleeve (7). The bottom of the traction block (61) is hinged to a puncture control component. The puncture control component drives the traction block (61) to clamp the external flexible clamping push rod (9) inside the sliding sleeve (7) and move it horizontally forward. The external flexible clamping push rod (9) includes a rigid rod body and a rubber layer disposed outside the rigid rod body. The top rear side of the machine body (1) is provided with a sliding through hole for installing the external flexible clamping push rod (9). The external flexible clamping push rod (9) is clearance-fitted with the sliding through hole.

2. The plant minimally invasive inoculation needle according to claim 1, characterized in that, The puncture control assembly includes a button (4) and a traction link (5) located on the lower side of the body (1). The middle part of the button (4) is rotatably connected to the body (1) via a central pivot (41). The top of the button (4) is rotatably connected to the traction link (5) via a first pivot (42). The traction link (5) is rotatably connected to the bottom of the traction block (61) via a second pivot (51). The second pivot (51) is connected to the rear side of the body (1) via a reset spring (8).

3. The plant minimally invasive inoculation needle according to claim 1, characterized in that, The injection puncture device (2) includes a piston cylinder (21), a piston, a piston rod (23), and a puncture needle (24). An outlet tube is provided on the front side of the piston cylinder (21), and the puncture needle (24) is fixed on the outlet tube. The piston is fixedly connected to the piston rod (23), and the piston and piston cylinder (21) are internally interference-fitted or transition-fitted.

4. The plant minimally invasive inoculation needle according to claim 3, characterized in that, The front side of the arc-shaped mounting part (10) is provided with a front insertion plate (11), and the front insertion plate (11) is provided with a vertical opening that cooperates with the front insertion plate (11). The rear side of the arc-shaped mounting part (10) is fixed with two rear limiting plates (12) that cooperate with the end of the piston cylinder (21).

5. The plant minimally invasive inoculation needle according to claim 3, characterized in that, At least three guide plates (25) are evenly distributed on the outside of the piston rod (23), and the outside of the guide plates (25) slides in cooperation with the inside of the piston cylinder (21).

6. The plant minimally invasive inoculation needle according to claim 1, characterized in that, The top of the body (1) is hinged with a limiting flap (3), which is used to fix the injection puncture device (2). The lower side of the limiting flap (3) is provided with an arc-shaped part that fits with the injection puncture device (2). The limiting flap (3) is magnetically attached to the body (1) on the side away from the hinge end.

7. The plant minimally invasive inoculation needle according to claim 1, characterized in that, The bottom front side of the sliding sleeve (7) is fixed with a bottom slide plate (71), and the two sides of the bottom slide plate (71) are provided with sliding protrusions (72). The body (1) is provided with a sliding groove that cooperates with the sliding protrusions (72).

8. The plant minimally invasive inoculation needle according to claim 7, characterized in that, The top front side of the traction block (6) is provided with a slot (62) that cooperates with the bottom slide plate (71), and the top rear side of the traction block (6) is provided with an upper swing shaft (63) that cooperates with the body (1).

9. The plant minimally invasive inoculation needle according to claim 3, characterized in that, The front side of the external flexible clamping push rod (9) is provided with a second magnet (91), and the rear side of the piston rod (23) is provided with a first magnet (92) that attracts the second magnet (91).

10. A method for inoculating plants using the plant minimally invasive inoculation needle of any one of claims 1-9, characterized in that, Includes the following steps: S1. Open the limiting cover (3) on the top of the machine body (1), put the injection puncture device (2) into the arc-shaped mounting part (10) on the front side of the machine body (1), so that the puncture needle (24) is inserted into the vertical opening of the front insertion plate (11), and the rear end of the piston cylinder (21) abuts against the rear limiting plate (12). S2, snap the limiting flip cover (3) and magnetically fix it to the body (1), the second magnet (91) on the front side of the external flexible clamping push rod (9) and the first magnet (26) on the rear side of the piston rod (23) attract each other; S3. Insert the puncture needle (24) into the plant to be inoculated site, press the button (4), the button (4) rotates around the central pivot (41), and pushes the traction block (6) to swing forward around the upper swing axis (63) via the traction link (5); S4. The snap-fit ​​protrusion (61) on the top of the traction block (6) clamps the outer flexible clamping push rod (9) upward. At the same time, the snap-fit ​​(62) drives the sliding sleeve (7) to slide forward along the slide groove. The outer flexible clamping push rod (9) drives the piston rod (23) and piston (22) forward through magnetic attraction. The inoculation solution is injected into the plant tissue by the puncture needle (24). S5. Release button (4), reset spring (8) pulls traction block (6) and sliding sleeve (7) back, the locking protrusion (61) swings in the opposite direction with traction block (6) and releases the outer flexible clamping push rod (9), the outer flexible clamping push rod (9) remains in the advancing position and does not retract; S6. Press the button (4) repeatedly. The traction block (6) clamps and pushes the outer flexible clamping push rod (9) at the new position each time to achieve continuous step-by-step pushing and complete continuous inoculation. S7. After the inoculation is completed, open the limiting cover (3) and take out the injection puncture device (2) from the arc-shaped mounting part (10). The first magnet (26) and the second magnet (91) are separated.

Images