Electronic injector capable of automatically feeding and withdrawing needle

Abstract

The invention provides an automatic needle advancing and retreating electronic injector which comprises a shell, a mounting cavity is formed in the top of the shell, a containing cavity is formed in one end of the shell, a communicating cavity is formed in the shell, the containing cavity is communicated with the mounting cavity through the communicating cavity, and a guide rod movably penetrates through the shell and located in the containing cavity in the horizontal direction. The end of the guide rod is located in the containing cavity and fixedly provided with a mounting plate, and a penetrating hole is formed in the mounting plate. By arranging the driving assemblies, when medicines are replaced, a liquid medicine bottle is reversely rotated to be separated from the bottle base, two moving plates slide in the mounting cavity towards the communicating cavity through the bottle base, a guide rod slides into the mounting cavity, and then a needle head can be detached through the two driving assemblies, so that the misoperation condition during medicine replacement is effectively avoided; and when the needle head is not taken down, the operation of replacing the liquid medicine bottle is carried out, so that the needle head stabs a user or forgets to replace the needle head, and cross infection is caused.

Description

Technical Field

[0001] The invention relates to the technical field of electronic injector equipment, and in particular to an electronic injector capable of automatically advancing and retracting a needle. Background Art

[0002] Electronic injectors, also known as power injectors or auto-injectors, are medical devices that use electronic control technology to achieve precise drug delivery; they can provide more accurate and controlled dosage management; automated operation reduces dosage errors caused by human factors and can improve patient comfort: reducing patient discomfort and reducing side effects;

[0003] However, most of the existing electronic syringes still have the following defects during the injection process: the electronic syringe needs to use a needle when in use, and the needle needs to be replaced when injecting different patients with liquid medicine, and the existing electronic syringes cannot automatically withdraw the needle when in use, which leads to the user's mistaken operation when changing the medicine bottle without removing the needle, which is easy to cause the user to be stabbed by the needle. In addition, the needle may be forgotten to be replaced when changing the medicine, resulting in cross infection;

[0004] Therefore, the present application proposes an electronic injector with automatic needle advancement and withdrawal. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an electronic syringe with automatic needle insertion and withdrawal, which solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An electronic syringe with automatic needle advancement and withdrawal comprises a shell, a mounting cavity is provided on the top of the shell, a receiving cavity is provided at one end of the shell, a connecting cavity is provided in the shell, the receiving cavity and the mounting cavity are connected through the connecting cavity, a guide rod is provided on the shell and is located in the receiving cavity and is movably penetrated in a horizontal direction, the end of the guide rod is located in the receiving cavity and is fixedly installed with a mounting plate, a through hole is provided on the mounting plate, a connecting seat is fixedly installed on a side of the mounting plate away from the connecting cavity, a needle is sleeved on the outside of the connecting seat, a limiting ring is integrally formed on the outside of the needle, and the end of the needle extends to the outside of the connecting seat;

[0008] A movable plate is slidably installed inside both sides of the installation cavity along the direction of the connecting cavity, a connecting plate is installed between the opposite sides of the two movable plates, a bottle seat is fixedly installed on one end of the connecting plate away from the connecting cavity, a micro-metering pump is fixedly installed on the other side of the bottle seat, the liquid inlet end of the micro-metering pump is connected to the inside of the bottle seat, and a corrugated hose is fixedly installed on the liquid outlet end, and the end of the corrugated hose movably passes through the connecting cavity and is connected to the perforation;

[0009] A telescopic rod is symmetrically installed on one side of the connecting plate close to the bottle seat and below the bottle seat, a mounting seat is installed at the other end of the two telescopic rods, a placement cavity is opened on the top of the mounting seat, a medicine bottle that can be threadedly connected to the bottle seat is placed on the mounting seat and in the placement cavity, and a limiting piece acting on the medicine bottle is installed on the mounting seat and in the placement cavity, which is used to limit the medicine bottle;

[0010] A transmission mechanism is installed on the shell and located in the installation cavity, one end of the transmission mechanism is connected to the connecting plate, and the other end is connected to the guide rod. When the two movable plates slide in the installation cavity toward the connecting cavity, the transmission mechanism is used to make the guide rod slide into the installation cavity. A driving component acting on the needle is installed on one end of the shell close to the accommodating cavity and on both sides of the accommodating cavity. When the guide rod slides into the installation cavity to cause the installation plate to move into the accommodating cavity, the needle is disassembled through two groups of driving components.

[0011] Further: the limiting member includes a guide column, a limiting plate and an adjusting rod;

[0012] The end of the mounting seat away from the connecting plate is horizontally movable with a guide column, the ends of the two guide columns extend to the placement cavity and are fixedly installed with a limit plate, the end of the mounting seat away from the connecting plate is horizontally threaded with an adjustment rod, and the end of the adjustment rod extending into the placement cavity is rotatably connected to the limit plate.

[0013] Further: the transmission mechanism includes a rotating rod, a fixed plate, a driving rack, a driving gear, a driven gear, and a driven rack;

[0014] A horizontal rotating rod is rotatably installed on the shell and located inside one side of the installation cavity, a horizontal fixed plate is fixedly installed on one side of the connecting plate close to the communicating cavity, a driving rack is fixedly installed on the top of the fixed plate, a driving gear meshing with the driving rack is coaxially fixedly connected to the rotating rod, a driven rack is fixedly installed on the bottom of the guide rod, and a driven gear meshing with the driven rack is coaxially fixedly connected to the rotating rod.

[0015] Further: the driving assembly includes a positioning plate, a driving member, and a limit block;

[0016] A positioning plate is fixedly installed at one end of the shell near the accommodating cavity and on one side of the accommodating cavity, a driving member is installed on the side of the positioning plate near the accommodating cavity, and a limiting block that can contact the side of the limiting ring near the mounting plate is installed at the other end of the driving member, and the limiting block is far away from the end of the driving member and close to the mounting plate and has an arc surface.

[0017] Further: the driving member includes a housing, a driving rod and a spring;

[0018] A shell is fixedly installed on one side of the positioning plate close to the accommodating cavity, and a driving rod fixedly connected to the limit block is movably penetrated through one end of the shell away from the positioning plate. A spring is sleeved on the outside of the shell, and both ends of the spring are respectively connected to the shell and the limit block.

[0019] Further: the connecting plate is rotatably mounted between opposite sides of the two movable plates through a rotating shaft, a through hole is provided on the movable plate, one end of the rotating shaft away from the connecting plate extends into the through hole, a limit adjustment mechanism is installed on the housing and in the mounting cavity, one end of the limit adjustment mechanism extends into the mounting cavity and contacts with the mounting seat, and the mounting seat has two states through the limit adjustment mechanism:

[0020] The first state: the mounting seat is limited by the limit adjustment mechanism;

[0021] The second state: the mounting seat is tilted downward along the connecting plate through the limit adjustment mechanism;

[0022] The movable plate is provided with a reset member connected with the rotating shaft, which is used for rotating and resetting the rotating shaft on the movable plate so that the mounting seat is in a horizontal state.

[0023] Further: the limit adjustment mechanism includes a slider, a limit adjustment frame and a threaded rod;

[0024] A slider is provided on the bottom wall of the installation cavity and is slidably connected along the direction of the connecting cavity. A limit adjustment frame that can contact the mounting seat is installed at one end of the slider close to the connecting cavity. A horizontal threaded rod is rotatably installed on the shell. One end of the threaded rod extends into the installation cavity and is threadedly connected to the slider.

[0025] Further: the limit adjustment frame includes a frame body fixedly connected to the end of the slider, the bottom of the frame body is in contact with the bottom wall of the installation cavity, and a limit adjustment plate that can contact the installation seat is rotatably installed on the bottom of the frame body and close to the side of the connecting cavity, and an articulated frame is slidably installed in a vertical direction on the side of the limit adjustment plate away from the installation seat, and an articulated block is hinged on the articulated frame, and a threaded rod two is horizontally threaded through the frame body and rotatably connected to the articulated block.

[0026] Further: the reset member includes a first horizontal plate, a second horizontal plate and a tension spring;

[0027] A transverse plate 1 is fixedly installed on one side of the movable plate and below the through hole, a transverse plate 2 is fixedly installed on the rotating shaft and inside the through hole, and a tension spring is fixedly installed between opposite sides of the transverse plate 1 and the transverse plate 2.

[0028] Furthermore: a hinge shaft is fixedly installed on the top of the shell and located on the side of the installation cavity close to the accommodating cavity, a sealing plate is hinged on the hinge shaft for sealing the open end of the installation cavity, a coil spring is sleeved on the outside of the hinge shaft, and the two ends of the coil spring are respectively fixed to the hinge shaft and the sealing plate, a sealing cover for sealing the accommodating cavity is hinged through the hinge plate on the top of the shell and located on the side of the hinge shaft close to the accommodating cavity, a magnet one is fixedly installed on the top of the shell and located on the side of the hinge shaft close to the accommodating cavity, a magnet two and a magnet three are symmetrically fixed on the hinge plate, when the sealing cover seals the accommodating cavity, magnet one is magnetically attracted to magnet two, and when the sealing cover cancels the sealing of the accommodating cavity, magnet one is magnetically attracted to magnet three.

[0029] The present invention provides an electronic syringe with automatic needle insertion and withdrawal. Compared with the prior art, it has the following beneficial effects:

[0030] 1. By setting the driving assembly, when changing medicines, the medicine bottle is rotated in the opposite direction to separate it from the bottle seat, and the two movable plates are slid in the installation cavity toward the connecting cavity through the bottle seat, and the guide rod slides into the installation cavity, and the needle can be disassembled through the two sets of driving assemblies, which effectively avoids the occurrence of misoperation when changing medicines, resulting in the operation of replacing the medicine bottle when the needle is not removed, thereby causing the needle to stab the user or forget to replace the needle, causing cross infection;

[0031] 2. By setting a limit adjustment mechanism, the connecting plate is rotatably installed between the opposite sides of the two movable plates through the rotating shaft. When in use, when the mounting seat is horizontal, the mounting seat is placed in the first state through the limit adjustment mechanism, and the mounting seat can be limited by the limit adjustment mechanism, so that the mounting seat remains horizontal. The mounting seat is placed in the second state through the limit adjustment mechanism, and the mounting seat can be tilted downward along the direction of the connecting plate through the limit adjustment mechanism, so that the liquid medicine bottle is tilted downward along the direction of the bottle seat, which is conducive to the liquid medicine in the liquid medicine bottle flowing into the bottle seat, so that the micro-metering pump can extract the liquid medicine flowing into the bottle seat outward;

[0032] 3. By setting a reset piece, when the limit adjustment mechanism causes the mounting seat to tilt downward along the direction of the connecting plate, the two rotating shafts rotate on the two movable plates respectively, and the state of the reset piece changes. When the limit adjustment mechanism is cancelled and the mounting seat is tilted downward along the direction of the connecting plate, the reset piece returns to its original state, causing the rotating shaft to rotate and reset on the movable plate, thereby making the mounting seat horizontal for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the three-dimensional structure of the present invention is shown;

[0035] Figure 2 A schematic diagram of the installation structure of the limit adjustment mechanism of the present invention is shown;

[0036] Figure 3 The present invention shows Figure 2 The enlarged view of point A in the middle;

[0037] Figure 4 A schematic diagram of the installation structure of the transmission mechanism of the present invention is shown;

[0038] Figure 5 A schematic diagram of the installation structure of the position limiting member of the present invention is shown;

[0039] Figure 6 A schematic diagram of the installation structure of the reset member of the present invention is shown;

[0040] Figure 7 A schematic diagram of the structure of the position limiting adjustment frame of the present invention is shown;

[0041] Figure 8 A schematic diagram of the installation structure of the driving assembly of the present invention is shown;

[0042] As shown in the figure: 1. Shell; 11. Installation cavity; 12. Accommodation cavity; 13. Communication cavity; 14. Guide rod; 15. Installation plate; 151. Perforation; 152. Connecting seat; 16. Needle; 161. Limiting ring; 17. Articulated shaft; 171. Coil spring; 18. Blocking plate; 19. Articulated plate; 191. Blocking cover; 192. Magnet 2; 193. Magnet 3; 2. Moving plate; 21. Connecting plate; 211. Rotating shaft; 22. Bottle seat; 23. Medicine bottle; 24. Micro metering pump; 25. Corrugated hose; 3. Telescopic rod; 31. Installation seat; 311. Placement cavity; 4. Limiting piece; 41. Guide column; 42. Limiting plate ;43. Adjustment rod;5. Transmission mechanism;51. Rotating rod;52. Fixed plate;53. Active rack;54. Active gear;55. Driven gear;56. Driven rack;6. Driving assembly;61. Positioning plate;62. Driving member;621. Housing;622. Driving rod;623. Spring;63. Limit block;7. Limit adjustment mechanism;71. Slider;72. Limit adjustment frame;721. Frame body;722. Limit adjustment plate;723. Articulated frame;724. Articulated block;725. Threaded rod two;73. Threaded rod one;8. Reset member;81. Horizontal plate one;82. Horizontal plate two;83. Tension spring;9. Magnet one. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are 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.

[0044] Embodiment 1

[0045] In order to solve the technical problems in the background technology, an electronic syringe with automatic needle insertion and withdrawal is provided as follows:

[0046] Combination Figure 1-Figure 8 As shown, an electronic syringe with automatic needle advancement and withdrawal provided by the present invention comprises a shell 1, a mounting cavity 11 is provided on the top of the shell 1, a receiving cavity 12 is provided at one end of the shell 1, a connecting cavity 13 is provided in the shell 1, and the receiving cavity 12 is connected with the mounting cavity 11 through the connecting cavity 13, a guide rod 14 is provided on the shell 1 and is located in the receiving cavity 12 and is movable and penetrates in a horizontal direction, the end of the guide rod 14 is located in the receiving cavity 12 and is fixedly installed with a mounting plate 15, a through hole 151 is provided on the mounting plate 15, a connecting seat 152 is fixedly installed on a side of the mounting plate 15 away from the connecting cavity 13, a needle 16 is sleeved on the outside of the connecting seat 152, a limiting ring 161 is integrally formed on the outside of the needle 16, and the end of the needle 16 extends to the outside of the connecting seat 152;

[0047] A movable plate 2 is slidably installed inside both sides of the installation cavity 11 along the direction of the connecting cavity 13. The movable plate 2 is tightly fitted with the housing 1. A connecting plate 21 is installed between the opposite sides of the two movable plates 2. A bottle seat 22 is fixedly installed at one end of the connecting plate 21 away from the connecting cavity 13. A micro-metering pump 24 is fixedly installed on the other side of the bottle seat 22. The micro-metering pump 24 is powered by an external power supply. The liquid inlet end of the micro-metering pump 24 is connected to the inside of the bottle seat 22, and a corrugated hose 25 is fixedly installed at the liquid outlet end. The end of the corrugated hose 25 is movable. It penetrates the communicating cavity 13 and is connected with the through hole 151. When in use, the housing 1 is in a vertical shape so that the accommodating cavity 12 is located at the top of the housing 1, and the liquid medicine bottle 23 is installed on the bottle seat 22. When the electronic syringe is in use, the needle 16 is located below the housing 1, and the liquid medicine bottle 23 flows into the bottle seat 22. The micro-metering pump 24 is controlled to start, and the micro-metering pump 24 works to draw out the liquid medicine in the bottle seat 22, so as to be transported to the corrugated hose 25 and transported to the through hole 151, so as to be discharged through the connecting seat 152 and the needle 16, so as to achieve the injection effect;

[0048] The connecting plate 21 is symmetrically provided with telescopic rods 3 on one side close to the bottle seat 22 and below the bottle seat 22. A mounting seat 31 is provided at the other end of the two telescopic rods 3. A placement cavity 311 is provided on the top of the mounting seat 31. A medicine liquid bottle 23 threadably connected to the bottle seat 22 is placed on the mounting seat 31 and in the placement cavity 311. A limiting member 4 acting on the medicine liquid bottle 23 is installed on the mounting seat 31 and in the placement cavity 311, and is used to limit the position of the medicine liquid bottle 23.

[0049] A transmission mechanism 5 is installed on the shell 1 and located in the installation cavity 11. One end of the transmission mechanism 5 is connected to the connecting plate 21 and the other end is connected to the guide rod 14. When the two movable plates 2 slide in the installation cavity 11 toward the connecting cavity 13, the transmission mechanism 5 is used to make the guide rod 14 slide into the installation cavity 11. A driving component 6 acting on the needle 16 is installed at one end of the shell 1 close to the accommodating cavity 12 and on both sides of the accommodating cavity 12. When the guide rod 14 slides into the installation cavity 11 to displace the installation plate 15 into the accommodating cavity 12, the needle 16 is disassembled through two groups of driving components 6. When in use, when installing the medicine liquid bottle 23, the medicine liquid bottle 23 is placed in the placement cavity 311, and the medicine liquid bottle 23 is limited by the limiter 4 according to the size of the medicine liquid bottle 23, and the medicine liquid bottle 23 is rotated to be threadedly connected with the bottle seat 22. The position of the medicine bottle 23 is fixed, so that the connecting plate 21 is pulled by the bottle seat 22 to make the two movable plates 2 slide in the installation cavity 11 away from the connecting cavity 13, so that the guide rod 14 is slid into the accommodating cavity 12 through the transmission mechanism 5, and the connecting seat 152 is displaced toward the outside of the shell 1, and the needle 16 can be installed at this time. By setting the driving component 6, when changing the medicine, the medicine bottle 23 is rotated in the opposite direction to separate it from the bottle seat 22, and the two movable plates 2 are slid in the installation cavity 11 toward the connecting cavity 13 through the bottle seat 22, and the guide rod 14 slides into the installation cavity 11, and the needle 16 can be disassembled by the two groups of driving components 6, which effectively avoids the occurrence of misoperation when changing medicines, resulting in the operation of replacing the medicine bottle 23 when the needle 16 is not removed, so that the needle 16 stabs the user or forgets to replace the needle 16, causing cross infection.

[0050] The end of the two guide posts 41 extends to the placement cavity 311 and is fixedly installed with the limit plate 42; the end of the mounting seat 31 away from the connecting plate 21 is horizontally threaded with an adjusting rod 43, and the end of the adjusting rod 43 extending into the placement cavity 311 is rotatably connected to the limit plate 42. When in use, the medicine liquid bottle 23 is placed in the placement cavity 311 and is located between the bottle seat 22 and the opposite side of the limit plate 42, and a force is applied to the adjusting rod 43 to make it rotate on the mounting seat 31, and the adjusting rod 43 is spirally moved on the mounting seat 31, and the adjusting rod 43 is rotatably connected to the limit plate 42, so that the limit plate 42 slides along the two guide posts 41, so that the limit plate 42 contacts with the medicine liquid bottle 23, and the limiting effect of the medicine liquid bottle 23 can be achieved.

[0051] In this embodiment, the transmission mechanism 5 includes a rotating rod 51, a fixed plate 52, an active rack 53, a driving gear 54, a driven gear 55, and a driven rack 56; a horizontal rotating rod 51 is rotatably installed on the housing 1 and located inside one side of the installation cavity 11, a horizontal fixed plate 52 is fixedly installed on one side of the connecting plate 21 close to the connecting cavity 13, a driving rack 53 is fixedly installed on the top of the fixed plate 52, a driving gear 54 meshing with the driving rack 53 is coaxially fixed on the rotating rod 51, a driven rack 56 is fixedly installed on the bottom of the guide rod 14, and a driving gear 54 meshing with the driving rack 53 is coaxially fixed on the rotating rod 51. A driven gear 55 meshing with a driven rack 56 is fixedly connected. Specifically, the driven rack 56 and the active rack 53 are symmetrically staggered. When in use, when the movable plate 2 slides in the mounting cavity 11 toward the connecting cavity 13, the connecting plate 21 is driven to move toward the connecting cavity 13, thereby driving the active rack 53 to move through the fixed plate 52, thereby driving the rotating rod 51 to rotate on the inner wall of the mounting cavity 11 through the active gear 54, and the driven gear 55 rotates synchronously, thereby driving the guide rod 14 to move into the mounting cavity 11 through the driven rack 56, and causing the mounting plate 15 to move into the accommodating cavity 12.

[0052] Embodiment 2

[0053] like Figure 1-Figure 8 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0054] In this embodiment, the driving component 6 includes a positioning plate 61, a driving member 62, and a limit block 63; the shell 1 is fixedly installed with a positioning plate 61 at one end close to the accommodating chamber 12 and located on one side of the accommodating chamber 12, the positioning plate 61 is installed with a driving member 62 on the side close to the accommodating chamber 12, and the other end of the driving member 62 is installed with a limit block 63 that can contact the side of the limit ring 161 close to the mounting plate 15, and the limit block 63 is far away from the end of the driving member 62 and close to the mounting plate 15. The side of the limit block 63 is curved; the driving member 62 includes a shell 621, a driving rod 622 and a spring 623; the positioning plate 61 is fixedly installed with a shell 621 on one side close to the accommodating chamber 12, and the end of the shell 621 away from the positioning plate 61 is movably penetrated by a driving rod 622 fixedly connected to the limit block 63, and the outer shell 621 The sleeve is provided with a spring 623, and the two ends of the spring 623 are respectively connected to the shell 621 and the limit block 63. It is worth mentioning that: when the spring 623 is in a natural state, the limit block 63 is located on the side of the limit ring 161 close to the mounting plate 15 and contacts with the limit ring 161. When in use, after the needle 16 is installed on the connecting seat 152, the limit block 63 is located on the side of the limit ring 161 close to the mounting plate 15 and contacts with the limit ring 161. When the mounting plate 15 moves into the accommodating cavity 12, the needle 16 is driven to move into the accommodating cavity 12. During this period, the limit ring 161 on the needle 16 contacts with the limit block 63, and the needle 16 can be separated from the connecting seat 152 under the reverse force of the force through the two limit blocks 63, thereby realizing the disassembly effect of the needle 16. Conversely, when the needle 16 is installed,

[0055] In this embodiment, the connecting plate 21 is rotatably mounted between opposite sides of the two movable plates 2 via a rotating shaft 211. A through hole is provided on the movable plate 2. One end of the rotating shaft 211 away from the connecting plate 21 extends into the through hole. A limit adjustment mechanism 7 is installed on the housing 1 and in the mounting cavity 11. One end of the limit adjustment mechanism 7 extends into the mounting cavity 11 and contacts the mounting seat 31. The limit adjustment mechanism 7 enables the mounting seat 31 to have two states:

[0056] First state: the mounting seat 31 is limited by the limit adjustment mechanism 7;

[0057] The second state: the position limiting adjustment mechanism 7 is used to make the mounting seat 31 tilt downward along the connecting plate 21;

[0058] The movable plate 2 is provided with a reset member 8 connected with the rotating shaft 211, which is used to rotate and reset the rotating shaft 211 on the movable plate 2 so that the mounting seat 31 is horizontal. By setting the limit adjustment mechanism 7, the connecting plate 21 is rotatably installed between the opposite sides of the two movable plates 2 through the rotating shaft 211. When in use, when the mounting seat 31 is horizontal, the limit adjustment mechanism 7 is used to make the mounting seat 31 in the first state, that is, the limit adjustment mechanism 7 is used to limit the mounting seat 31, so that the mounting seat 31 remains horizontal. The limit adjustment mechanism 7 is used to make the mounting seat 31 in the second state, that is, the limit adjustment mechanism 7 is used to make the mounting seat 31 along the connecting plate 21 direction is tilted downward, so that the medicine bottle 23 is tilted downward along the bottle seat 22 direction, which is beneficial for the medicine in the medicine bottle 23 to flow into the bottle seat 22, so that the micro-metering pump 24 is beneficial for extracting the medicine flowing into the bottle seat 22. During this period, when the limit adjustment mechanism 7 makes the mounting seat 31 tilt downward along the connecting plate 21 direction, the two rotating shafts 211 rotate on the two movable plates 2 respectively, and the state of the reset member 8 changes. When the limit adjustment mechanism 7 is cancelled and the state in which the mounting seat 31 tilts downward along the connecting plate 21 direction is cancelled, the reset member 8 returns to the original state, so that the rotating shaft 211 rotates and resets on the movable plate 2, so that the mounting seat 31 is horizontal, which is convenient for use.

[0059] Embodiment 3

[0060] like Figure 1-Figure 8 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0061] In this embodiment, the limit adjustment mechanism 7 includes a slider 71, a limit adjustment frame 72 and a threaded rod 73; a slider 71 is slidably connected on the inner bottom wall of the installation cavity 11 and along the direction of the connecting cavity 13, and a limit adjustment frame 72 that can contact the installation seat 31 is installed at one end of the slider 71 close to the connecting cavity 13, and a horizontal threaded rod 73 is rotatably installed on the shell 1, one end of the threaded rod 73 extends into the installation cavity 11 and is threadedly connected to the slider 71. When in use, when the installation seat 31 is horizontal, the threaded rod 73 is rotated on the shell 1, so that the slider 71 slides on the inner bottom wall of the installation cavity 11, driving the limit adjustment frame 72 to move, so that the limit adjustment frame 72 contacts the installation seat 31, and the installation seat 31 can be limited by the limit adjustment frame 72.

[0062] In this embodiment, the limit adjustment frame 72 includes a frame body 721 fixedly connected to the end of the slider 71, the bottom of the frame body 721 is in contact with the bottom wall of the installation cavity 11, and a limit adjustment plate 722 that can contact the installation seat 31 is rotatably installed on the bottom of the frame body 721 and close to the connecting cavity 13. The limit adjustment plate 722 is slidably installed with an articulated frame 723 on the side away from the installation seat 31 in a vertical direction. The articulated frame 723 is hinged with an articulated block 724, and the frame body 721 is horizontally threaded with a threaded rod 725 rotatably connected to the articulated block 724. When it is necessary to move the installation seat 31 along the direction of the connecting plate 21 through the limit adjustment mechanism 7, When tilting downward, a rotational force is applied to the threaded rod 2 725, causing it to move on the frame 721 away from the limit adjustment plate 722, and the threaded rod 2 725 rotates with the hinge block 724. At this time, the hinge block 724 rotates on the hinge frame 723, and the hinge frame 723 slides on the limit adjustment plate 722, so that the limit adjustment plate 722 can be rotated on the frame 721, so that the free end of the limit adjustment plate 722 tilts away from the mounting seat 31. At this time, the threaded rod 1 73 is rotated on the shell 1 again, so that the frame 721 is displaced toward the mounting seat 31, so that the mounting seat 31 can be tilted downward along the connecting plate 21.

[0063] In this embodiment, the reset member 8 includes a transverse plate 1 81, a transverse plate 2 82 and a tension spring 83; a transverse plate 1 81 is fixedly installed on one side of the movable plate 2 and located below the through hole, a transverse plate 2 82 is fixedly installed on the rotating shaft 211 and located in the through hole, and a tension spring 83 is fixedly installed between the opposite sides of the transverse plate 1 81 and the transverse plate 2 82. When in use, when the mounting seat 31 tilts downward along the direction of the connecting plate 21, the connecting plate 21 is inclined, so that the two rotating shafts 211 rotate on the two movable plates 2 respectively, and the transverse plate 2 82 rotates around the rotating shaft 211, so that the tension spring 83 is deformed. When the limit adjustment frame 72 is displaced to the outside of the mounting seat 31, the tension spring 83 returns to its natural state, so that the rotating shaft 211 can be rotated and reset on the movable plate 2 through the transverse plate 22, so that the connecting plate 21 can be rotated and reset around the two rotating shafts 211.

[0064] In this embodiment, a hinge shaft 17 is fixedly installed on the top of the shell 1 and is located on the side of the installation cavity 11 close to the accommodating cavity 12. A sealing plate 18 is hinged on the hinge shaft 17 for sealing the open end of the installation cavity 11. A coil spring 171 is sleeved on the outside of the hinge shaft 17. The two ends of the coil spring 171 are respectively fixed to the hinge shaft 17 and the sealing plate 18. When in use, a force is applied to the sealing plate 18 to rotate it around the hinge shaft 17 so that its free end is away from the shell 1, so that the sealing of the open end of the installation cavity 11 can be cancelled, and the coil spring 171 is deformed by the force. Conversely, when the force on the sealing plate 18 is cancelled, the coil spring 171 returns to its natural state, so that the sealing plate 18 can be rotated and reset around the hinge shaft 17, thereby making the sealing plate 18 rotate and reset around the hinge shaft 17 to seal the open end of the installation cavity 11. The top of the shell 1 and is located on the side of the hinge shaft 17 close to the accommodating cavity 12 A blocking cover 191 for blocking the accommodating chamber 12 is hingedly connected through a hinge plate 19, a magnet 19 is fixedly installed on the top of the shell 1 and on the side of the hinge shaft 17 close to the accommodating chamber 12, and a magnet 2 192 and a magnet 3 193 are symmetrically fixed on the hinge plate 19. When the blocking cover 191 blocks the accommodating chamber 12, magnet 19 and magnet 2 192 are magnetically attracted to each other, and when the blocking cover 191 cancels the blocking of the accommodating chamber 12, magnet 19 and magnet 3 193 are magnetically attracted to each other. The design of the blocking cover 191 can achieve the effect of blocking the accommodating chamber 12. By arranging magnet 19, magnet 2 192 and magnet 3 193, when the blocking cover 191 blocks the accommodating chamber 12, magnet 19 and magnet 2 192 are magnetically attracted to each other, and when the blocking cover 191 cancels the blocking of the accommodating chamber 12, magnet 19 and magnet 3 193 are magnetically attracted to each other, which is convenient for fixing the position of the blocking cover 191.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic syringe with automatic needle insertion and withdrawal, characterized in that: The invention comprises a shell, a mounting cavity is provided on the top of the shell, a receiving cavity is provided at one end of the shell, a connecting cavity is provided in the shell, the receiving cavity is connected with the mounting cavity through the connecting cavity, a guide rod is provided on the shell and is located in the receiving cavity and is movably penetrated in a horizontal direction, the end of the guide rod is located in the receiving cavity and is fixedly installed with a mounting plate, a through hole is provided on the mounting plate, a connecting seat is fixedly installed on a side of the mounting plate away from the connecting cavity, a needle is sleeved on the outside of the connecting seat, a limiting ring is integrally formed on the outside of the needle, and the end of the needle extends to the outside of the connecting seat; A movable plate is slidably installed inside both sides of the installation cavity along the direction of the connecting cavity, a connecting plate is installed between the opposite sides of the two movable plates, a bottle seat is fixedly installed on one end of the connecting plate away from the connecting cavity, a micro-metering pump is fixedly installed on the other side of the bottle seat, the liquid inlet end of the micro-metering pump is connected to the inside of the bottle seat, and a corrugated hose is fixedly installed on the liquid outlet end, and the end of the corrugated hose movably passes through the connecting cavity and is connected to the perforation; A telescopic rod is symmetrically installed on one side of the connecting plate close to the bottle seat and below the bottle seat, a mounting seat is installed at the other end of the two telescopic rods, a placement cavity is opened on the top of the mounting seat, a medicine bottle that can be threadedly connected to the bottle seat is placed on the mounting seat and in the placement cavity, and a limiting piece acting on the medicine bottle is installed on the mounting seat and in the placement cavity, which is used to limit the medicine bottle; A transmission mechanism is installed on the shell and located in the installation cavity, one end of the transmission mechanism is connected to the connecting plate, and the other end is connected to the guide rod. When the two movable plates slide in the installation cavity toward the connecting cavity, the transmission mechanism is used to make the guide rod slide into the installation cavity. A driving component acting on the needle is installed on one end of the shell close to the accommodating cavity and on both sides of the accommodating cavity. When the guide rod slides into the installation cavity to cause the installation plate to move into the accommodating cavity, the needle is disassembled through two groups of driving components.

2. The electronic syringe with automatic needle insertion and withdrawal according to claim 1, characterized in that: The limiting member includes a guide column, a limiting plate and an adjusting rod; The end of the mounting seat away from the connecting plate is horizontally movable with a guide column, the ends of the two guide columns extend to the placement cavity and are fixedly installed with a limit plate, the end of the mounting seat away from the connecting plate is horizontally threaded with an adjustment rod, and the end of the adjustment rod extending into the placement cavity is rotatably connected to the limit plate.

3. The electronic syringe with automatic needle insertion and withdrawal according to claim 2, characterized in that: The transmission mechanism includes a rotating rod, a fixed plate, a driving rack, a driving gear, a driven gear, and a driven rack; A horizontal rotating rod is rotatably installed on the shell and located inside one side of the installation cavity, a horizontal fixed plate is fixedly installed on one side of the connecting plate close to the communicating cavity, a driving rack is fixedly installed on the top of the fixed plate, a driving gear meshing with the driving rack is coaxially fixedly connected to the rotating rod, a driven rack is fixedly installed on the bottom of the guide rod, and a driven gear meshing with the driven rack is coaxially fixedly connected to the rotating rod.

4. The electronic syringe with automatic needle insertion and withdrawal according to claim 3, characterized in that: The driving assembly includes a positioning plate, a driving member, and a limit block; A positioning plate is fixedly installed at one end of the shell near the accommodating cavity and on one side of the accommodating cavity, a driving member is installed on the side of the positioning plate near the accommodating cavity, and a limiting block that can contact the side of the limiting ring near the mounting plate is installed at the other end of the driving member, and the limiting block is far away from the end of the driving member and close to the mounting plate and has an arc surface.

5. The electronic syringe with automatic needle insertion and withdrawal according to claim 4, characterized in that: The driving member comprises a housing, a driving rod and a spring; A shell is fixedly installed on one side of the positioning plate close to the accommodating cavity, and a driving rod fixedly connected to the limit block is movably penetrated through one end of the shell away from the positioning plate. A spring is sleeved on the outside of the shell, and both ends of the spring are respectively connected to the shell and the limit block.

6. The electronic syringe with automatic needle insertion and withdrawal according to claim 5, characterized in that: The connecting plate is rotatably mounted between opposite sides of the two moving plates via a rotating shaft. A through hole is provided on the moving plate. One end of the rotating shaft away from the connecting plate extends into the through hole. A limit adjustment mechanism is installed on the housing and in the mounting cavity. One end of the limit adjustment mechanism extends into the mounting cavity and contacts the mounting seat. The mounting seat has two states through the limit adjustment mechanism: The first state: the mounting seat is limited by the limit adjustment mechanism; The second state: the mounting seat is tilted downward along the connecting plate through the limit adjustment mechanism; The movable plate is provided with a reset member connected with the rotating shaft, which is used for rotating and resetting the rotating shaft on the movable plate so that the mounting seat is in a horizontal state.

7. The electronic syringe with automatic needle insertion and withdrawal according to claim 6, characterized in that: The limit adjustment mechanism includes a slider, a limit adjustment frame and a threaded rod; A slider is provided on the bottom wall of the installation cavity and is slidably connected along the direction of the connecting cavity. A limit adjustment frame that can contact the mounting seat is installed at one end of the slider close to the connecting cavity. A horizontal threaded rod is rotatably installed on the shell. One end of the threaded rod extends into the installation cavity and is threadedly connected to the slider.

8. The electronic syringe with automatic needle insertion and withdrawal according to claim 7, characterized in that: The limit adjustment frame includes a frame body fixedly connected to the end of the slider, the bottom of the frame body fits with the bottom wall of the installation cavity, and a limit adjustment plate that can contact the installation seat is rotatably installed on the bottom of the frame body and close to the connecting cavity. A hinge frame is slidably installed in a vertical direction on the side of the limit adjustment plate away from the installation seat, and a hinge block is hinged on the hinge frame. A threaded rod two is horizontally threaded and rotatably connected to the hinge block.

9. The electronic syringe with automatic needle insertion and withdrawal according to claim 8, characterized in that: The reset member comprises a first horizontal plate, a second horizontal plate and a tension spring; A transverse plate 1 is fixedly installed on one side of the movable plate and below the through hole, a transverse plate 2 is fixedly installed on the rotating shaft and inside the through hole, and a tension spring is fixedly installed between opposite sides of the transverse plate 1 and the transverse plate 2.

10. The electronic syringe with automatic needle insertion and withdrawal according to claim 9, characterized in that: A hinge shaft is fixedly installed on the top of the shell and located on the side of the installation cavity close to the accommodating cavity. A sealing plate is hinged on the hinge shaft for sealing the open end of the installation cavity. A coil spring is sleeved on the outside of the hinge shaft, and both ends of the coil spring are respectively fixed to the hinge shaft and the sealing plate. A sealing cover for sealing the accommodating cavity is hinged through the hinge plate on the top of the shell and located on the side of the hinge shaft close to the accommodating cavity. Magnet one is fixedly installed on the top of the shell and located on the side of the hinge shaft close to the accommodating cavity. Magnet two and magnet three are symmetrically fixed on the hinge plate. When the sealing cover seals the accommodating cavity, magnet one is magnetically attracted to magnet two. When the sealing cover cancels the sealing of the accommodating cavity, magnet one is magnetically attracted to magnet three.

Images