Nerve blocker injection pump

Abstract

The utility model provides a nerve block injection pump, and belongs to the technical field of nerve block operation auxiliary equipment. The problem that the nerve block injection pump is poor in flexibility and adaptability due to the fact that the nerve block injection pump cannot be well matched with syringes which are different in size specification is solved. The nerve block injection pump comprises an injection pump shell, an injector fixing unit, a lead screw transmission unit and a push-pull execution unit. The injector fixing unit comprises a V-shaped base and a length fixing module, the V-shaped base fixes an injector, the length fixing module clamps the injector through a sliding length clamping block and a baffle, a sliding block slides along the axis of the injector, and a pushing block of the push-pull execution unit is fixed to the sliding block and pushes a piston rod of the injector to complete medicine injection. By means of the arrangement, the nerve block injection pump can be matched with injectors of different sizes and specifications, and the problem that the nerve block injection pump is poor in flexibility and adaptability is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the nerve block operation auxiliary equipment technical field, especially, it relates to a nerve block agent injection pump. BACKGROUND

[0002] Nerve block operation is a key clinical treatment method, through the accurate injection of drugs around the nerve, reversibly block the nerve conduction function, thereby realizing disease diagnosis, treatment, or providing anesthesia support for operation. When performing nerve block operation, doctors often use nerve block agent injection pump to complete the block needle puncture and drug injection operation with one hand, effectively improving work efficiency.

[0003] The patent application for an invention with the publication number CN113662633A specifically discloses a kind of manual control system of nerve block injection guided by ultrasound, including injection pump body, limiting U-shaped card and positioning U-shaped card, the front of the injection pump body is fixedly connected with two limiting U-shaped cards, the inner wall of two limiting U-shaped cards is jointly clamped with syringe, the front of the injection pump body is fixedly connected with positioning U-shaped card, the injection pump body is fixed by the combination design of limiting U-shaped card and positioning U-shaped card, the axial fixation of syringe barrel is realized. However, because the fixed limiting structure of injection pump body can only adapt to single standard specification syringe, and 20ml syringe or 50ml syringe is often used in nerve block operation, the size difference between the two specifications of syringe is too large, far beyond the structure adjustment range of limiting U-shaped card and further affects the adaptability of nerve block agent injection pump;Secondly, when the clinical demand extends to other therapeutic drug infusion outside anesthetic drugs, the existing device cannot be compatible with 5ml, 10ml and other small syringes, which limits the flexibility of nerve block agent injection pump.

[0004] In summary, the existing nerve block agent injection pump has the following deficiencies: the syringes with great size difference cannot be well adapted, which limits the flexibility and adaptability of the device. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a nerve block agent injection pump capable of adapting to syringes of different size specifications, to solve the problem of poor flexibility and adaptability of nerve block agent injection pump caused by the poor adaptation of nerve block agent injection pump to syringes with great size difference.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a nerve block agent injection pump, which comprises:

[0007] An injection pump shell;

[0008] The syringe fixing unit comprises a V-shaped base and a length fixing module, the V-shaped base is fixedly installed on the syringe pump shell, the syringe is placed in the V-shaped base along the length direction of the V-shaped base, the length fixing module comprises a length clamping block and a baffle, the baffle is located in front of the syringe and limits the barrel of the syringe, the length clamping block is slidingly arranged, the sliding direction of the length clamping block is parallel to the axis of the syringe, the length clamping block is located behind the syringe and clamps the wing plate of the barrel of the syringe.

[0009] The sliding block is slidingly installed on the syringe pump shell, and the sliding direction of the sliding block is parallel to the axis of the syringe.

[0010] The push-pull execution unit comprises a push block, the push block is fixedly installed on the sliding block, the push block is located behind the piston rod of the syringe, the push block slides with the sliding block and pushes the piston rod of the syringe.

[0011] As an optional solution, the length fixing module further comprises a clamping spring and a clamping sliding rail;

[0012] The clamping sliding rail is fixedly installed on the syringe pump shell, and the guide direction of the clamping sliding rail is parallel to the length direction of the V-shaped base.

[0013] The length clamping block is slidingly installed on the clamping sliding rail.

[0014] The stretching direction of the clamping spring is parallel to the guide direction of the clamping sliding rail, one end of the clamping spring is fixedly connected with the V-shaped base, and the other end of the clamping spring is fixedly connected with the length clamping block.

[0015] As an optional solution, the length fixing module further comprises a limiting block;

[0016] The limiting block is fixedly installed on the syringe pump shell, and the limiting block blocks the sliding of the length clamping block.

[0017] The length clamping block slides between the limiting block and the V-shaped base.

[0018] As an optional solution, the lead screw transmission unit further comprises a rotating power source, a lead screw and a lead screw sliding rail;

[0019] The lead screw is rotatably installed on the syringe pump shell, and the rotation axis of the lead screw is parallel to the axis direction of the syringe.

[0020] The rotating power source is fixedly installed on the syringe pump shell, and the rotating power source drives the lead screw to rotate forward or reversely.

[0021] The lead screw sliding rail is fixedly installed on the syringe pump shell, and the guide direction of the lead screw sliding rail is parallel to the axis direction of the lead screw.

[0022] The sliding block is threadedly connected with the screw rod, and is slidingly installed on the screw rod sliding rail.

[0023] As an option, the push-pull execution unit further comprises a gear, a rack, a gear connecting column and an L-shaped clamping block.

[0024] The push block is internally provided with a cavity.

[0025] The gear connecting column is fixedly installed in the cavity, and the axis direction of the gear connecting column is parallel to the axis direction of the syringe.

[0026] The gear is rotatably installed on the gear connecting column, and the rotation axis of the gear is parallel to the axis of the gear connecting column.

[0027] The number of the racks is two, and the two racks are slidingly installed in the cavity, and the two racks are symmetrically arranged at the two sides of the gear, the rack and the gear are in meshing engagement, one end of the rack slidingly extends out of the push block, the end of the rack slidingly extending out of the push block is a telescopic end, and the sliding direction of the rack is perpendicular to the rotation axis of the gear.

[0028] The piston rod tail of the syringe is provided with a push plate, the number of the L-shaped clamping blocks is two, the vertical end of the L-shaped clamping block is a limiting end, the horizontal end of the L-shaped clamping block is a connecting end, the connecting ends of the two L-shaped clamping blocks are fixedly installed on the telescopic ends of the two racks, the two limiting ends are located in front of the push block, the two limiting ends are oppositely arranged, the distance between the limiting end and the end face of the push block is greater than the thickness of the push plate, the limiting end and the front end face of the push block form a clamping space, and the push plate is located in the clamping space.

[0029] As an option, the nerve block injection pump further comprises a nerve block needle, a medical hose and a controller.

[0030] The nerve block needle comprises a needle head and a transfusion connector, and the needle head is fixedly installed on the transfusion connector.

[0031] One end of the medical hose is communicated with the injection port of the syringe, and the other end of the medical hose is communicated with the needle head through the transfusion connector.

[0032] The controller comprises a control handle, a first fixed cover and a second fixed cover.

[0033] A guide groove for accommodating the medical hose is formed in the side wall of the control handle, and the two ends of the guide groove extend along the guide direction and respectively penetrate the front and rear end faces of the control handle.

[0034] The first fixed cover is fixedly installed on the operating handle, a first recess is formed in the first fixed cover, two ends of the first recess extend through two end faces of the first fixed cover respectively, and an extension direction of the first recess is parallel to an axis of the infusion connector; one end of the first recess close to the operating handle is communicated with the guide recess, and the other end of the first recess can pass through the needle.

[0035] The second fixed cover is rotatably installed on the first fixed cover, a rotation axis of the second fixed cover is parallel to the axis of the nerve block needle, a second recess is formed in the second fixed cover, two ends of the second recess extend through two end faces of the second fixed cover respectively, and an extension direction of the second recess is parallel to the axis of the infusion connector; one end of the second recess close to the operating handle is communicated with the guide recess, and the other end of the second recess can pass through the needle, the first recess and the second recess cooperatively form a limiting recess, the limiting recess corresponds to the shape of the infusion connector, the limiting recess limits the infusion connector, and the second fixed cover can be clamped on the first fixed cover to fix the operating device on the infusion connector.

[0036] As an optional solution, an observation window is formed in the first fixed cover; the observation window is located between the operating handle and the first recess.

[0037] As an optional solution, the nerve block injection pump further comprises a controller, an advancing signal transmitter and a retreating signal transmitter.

[0038] The controller is fixedly installed on the injection pump housing, the controller is electrically connected with the rotating power source, and the controller can control the rotating direction of the rotating power source.

[0039] The advancing signal transmitter is fixedly installed on the operating device handle, the advancing signal transmitter is electrically connected with the controller, the advancing signal transmitter transmits an advancing signal and controls the sliding block to advance.

[0040] The retreating signal transmitter is fixedly installed on the operating device handle, the retreating signal transmitter is electrically connected with the controller, the retreating signal transmitter transmits a retreating signal and controls the sliding block to retreat.

[0041] As an optional solution, the nerve block injection pump further comprises a U-shaped fixed clamp, a movable clamping block and a screw rod.

[0042] The U-shaped fixed clamp comprises two side plates and a top plate, one of the side plates of the U-shaped fixed clamp is fixedly installed on the injection pump housing.

[0043] The screw rod penetrates through one of the side plates of the U-shaped fixed clamp and is threadedly connected with the side plate, and a rotation axis of the screw rod is perpendicular to a side wall of the side plate.

[0044] The movable clamping block is slidingly installed between the two side plates, and the sliding direction of the movable clamping block is parallel to the rotation axis of the screw rod, and the movable clamping block is rotationally connected to the end of the screw rod.

[0045] As described above, the nerve block injection pump has at least the following beneficial effects:

[0046] 1. The length clamping block, clamping spring and baffle are arranged, so that different length syringes can be clamped and fixed; the design of limiting and clamping different specifications of syringes in the diameter direction improves the adaptability to different specifications of syringes, so that the nerve block injection pump can adapt to more types of syringes.

[0047] 2. The controller, forward signal transmitter and backward signal transmitter are arranged, so that the doctor can inject medicine or extract liquid through the controller while puncturing, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 A shaft side structure schematic view of the nerve block injection pump is shown;

[0049] Figure 2 A structure schematic view of the syringe fixing unit is shown;

[0050] Figure 3 A structure schematic view of the lead screw driving unit and the syringe fixing unit is shown;

[0051] Figure 4 A top view structure schematic view of the nerve block injection pump is shown;

[0052] Figure 5 A structure schematic view of the nerve block injection pump Figure 4 A structure schematic view of the nerve block injection pump

[0053] Figure 6 A structure schematic view of the push-pull execution unit is shown;

[0054] Figure 7 A structure schematic view of the nerve block needle and the controller is shown;

[0055] Figure 8 A structure schematic view of the U-shaped fixing clamp, movable clamping block and screw rod is shown;

[0056] Figure 9 A connection structure schematic view of the syringe, medical hose and nerve block needle is shown;

[0057] Figure 10The flow chart of signal control between the controller, the forward signal transmitter, the backward signal transmitter and the rotating power source is shown in the utility model;

[0058] In the figure: 1. injection pump shell; 2. syringe fixing unit; 3. screw transmission unit; 4. push-pull execution unit; 5. nerve block needle; 6. medical hose; 7. manipulator; 8. controller; 9. forward signal transmitter; 10. backward signal transmitter; 11. U-shaped fixing clamp; 12. movable clamping block; 13. screw rod; 14. syringe;

[0059] 201. V-shaped base; 202. length fixing module;

[0060] 301. sliding block; 302. rotating power source; 303. screw rod; 304. screw rod sliding rail;

[0061] 401. push block; 402. gear; 403. rack; 404. gear connecting column; 405. L-shaped clamping block;

[0062] 501. needle; 502. infusion connector;

[0063] 701. control handle; 702. first fixing cover; 703. second fixing cover;

[0064] 1401. barrel; 1402. wing plate; 1403. piston rod; 1404. push plate;

[0065] 2021. length clamping block; 2022. baffle; 2023. clamping spring; 2024. clamping sliding rail; 2025. limiting block;

[0066] 7011. guide groove;

[0067] 7021. observation window. DETAILED DESCRIPTION

[0068] The implementation modes of the utility model are explained by specific embodiments below, and other advantages and effects of the utility model can be easily understood by those skilled in the art from the content disclosed in the specification.

[0069] Please refer to Figures 1 to 8It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the implementation of the utility model, and therefore do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, and the change or adjustment of the relative relationship is also considered as the implementation of the utility model.

[0070] The following embodiments are only for illustration. Various embodiments can be combined, which are not limited to the content shown in the following single embodiment.

[0071] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 9 , the utility model provides a nerve blocking agent injection pump, it includes:

[0072] Injection pump shell 1;

[0073] Syringe fixing unit 2, including V-shaped base 201 and length fixing module 202, the V-shaped base 201 is fixedly installed on the injection pump shell 1, the syringe 14 is placed in its length direction along V-shaped base 201, the length fixing module 202 includes length clamping block 2021 and baffle 2022, the baffle 2022 is located in front of the syringe 14 and limits the barrel 1401 of the syringe 14, the length clamping block 2021 is slidably arranged, the sliding direction of the length clamping block 2021 is parallel to the axis of the syringe 14, the length clamping block 2021 is located behind the syringe 14 and clamps the wing plate 1402 of the barrel 1401 of the syringe 14;

[0074] Slide block 301, the slide block 301 is slidably installed on the injection pump shell 1, and the sliding direction of the slide block 301 is parallel to the axis of the syringe 14;

[0075] Push-pull execution unit 4, the push-pull execution unit 4 includes push block 401, the push block 401 is fixedly installed on the slide block 301, the push block 401 is located behind the piston rod 1403 of the syringe 14, the push block 401 slides along with the slide block 301 and pushes the piston rod 1403 of the syringe 14;

[0076] A push plate 1404 is provided at the end of the piston rod 1403 of the syringe 14;

[0077] Here, in this embodiment, a vertical long through-hole is provided on the baffle 2022, and the long through-hole enables the injection ports of syringes 14 of different specifications to pass through the baffle 2022;

[0078] Here, the baffle 2022 can also have another form. When the barrel 1401 of the syringe 14 abuts against the baffle 2022, the height of the overlapping part of the baffle 2022 and the barrel 1401 of the syringe 14 is the vertical shielding height H, and the vertical shielding height H satisfies the following constraint condition: H < R + D - r, where R is the radius of the barrel 1401 of the syringe 14, D is the eccentricity between the axis of the barrel 1401 of the syringe 14 and the axis of the injection port of the syringe 14, and r is the radius of the injection port. The baffle 2022 does not interfere with the normal operation space of the injection port of the syringe 14, and at the same time ensures that the baffle 2022 can abut against the barrel 1401 of the syringe 14;

[0079] Here, as Figure 9 shown, the syringe 14 includes a barrel 1401, a wing plate 1402, a piston rod 1403 and a push plate 1404;

[0080] Here, in this embodiment, the length clamping block 2021 is U-shaped, and a U-shaped groove for accommodating the wing plate 1402 is provided in the middle of the length clamping block 2021. The wing plate 1402 can be directly placed in the length clamping block 2021 through the U-shaped groove, and then the syringe 14 is clamped by the baffle 2022 and the length clamping block 2021, and different specifications of syringes 14 are adapted by sliding the length clamping block 2021;

[0081] Through this setting, the V-shaped base 201 can adapt to different diameters of syringes 14 of different specifications, and the slidable length clamping block 2021 can cooperate with the baffle 2022 to clamp different lengths of syringes 14 of different specifications, increasing the adaptability and flexibility of the nerve blocker injection pump for syringes 14 of different specifications.

[0082] In this embodiment, please refer to Figures 1 to 4 , the length fixing module 202 further includes a clamping spring 2023 and a clamping slide rail 2024;

[0083] The clamping slide rail 2024 is fixedly installed on the injection pump housing 1, and the guiding direction of the clamping slide rail 2024 is parallel to the length direction of the V-shaped base 201;

[0084] The length clamping block 2021 is slidably installed on the clamping slide rail 202;

[0085] The stretching direction of the clamping spring 2023 is parallel to the guiding direction of the clamping slide rail 2024, one end of the clamping spring 2023 is fixedly connected with the V-shaped base 201, and the other end of the clamping spring 2023 is fixedly connected with the length clamping block 2021.

[0086] Here, the length of the barrel 1401 of the syringe 14 is greater than the distance from the baffle 2022 to the length clamping block 2021 when the clamping spring 2023 is in the balanced state, so that the length fixing module 202 clamps the syringe 14 in the stretching state of the clamping spring 2023 when clamping syringes 14 of different specifications, and the clamping spring 2023 in the stretching state provides a continuous elastic force to drive the length clamping block 2021 to push the wing plate 1402 of the syringe 14 to clamp the barrel 1401 of the syringe 14 between the length clamping block 2021 and the baffle 2022.

[0087] Here, the elastic force of the clamping spring 2023 in the stretching state is greater than the force of the piston rod 1403 of the syringe 14 in the back-pulling state, so that the back-pulling of the piston rod 1403 of the syringe 14 does not drive the length clamping block 2021 to move backward, thereby preventing the syringe 14 from sliding backward as a whole in the back-pulling process.

[0088] Through the above arrangement, the length of the syringe 14 of different specifications can be adapted and clamped, and the whole clamping process does not need complex manual adjustment, but relies on the elastic potential of the clamping spring 2023 to automatically complete the clamping of the syringe 14, greatly improving the operation efficiency of medical staff and saving operation time.

[0089] In the embodiment, please refer to Figures 1 to 4 The length fixing module 202 further comprises a limiting block 2025.

[0090] The limiting block 2025 is fixedly installed on the injection pump shell 1, and the limiting block 2025 blocks the sliding of the length clamping block 2021.

[0091] The length clamping block 2021 slides between the limiting block 2025 and the V-shaped base 201.

[0092] Through the above arrangement, the length clamping block 2021 can slide within a certain range, preventing the length clamping block 2021 from being separated from the slide rail, and increasing the reliability of the nerve blockage agent injection pump.

[0093] In the embodiment, please refer to Figure 3 The screw rod 303 transmission unit 3 further comprises a rotating power source 302, a screw rod 303 and a screw rod slide rail 304.

[0094] The screw rod 303 is rotatably installed on the injection pump shell 1, and the rotating axis of the screw rod 303 is parallel to the axis direction of the syringe 14.

[0095] The rotating power source 302 is fixedly installed on the injection pump shell 1, and drives the screw rod 303 to rotate forward or reversely;

[0096] The screw rod slide rail 304 is fixedly installed on the injection pump shell 1, and the guide direction of the screw rod slide rail 304 is parallel to the axial direction of the screw rod 303;

[0097] The sliding block 301 is threadedly connected with the screw rod 303, and is slidingly installed on the screw rod slide rail 304, and slides along with the rotation of the screw rod 303;

[0098] Herein, in the embodiment, the rotating power source 302 is a motor, which can rotate forward or reversely, and the forward rotation of the motor drives the screw rod 303 to rotate forward, and the sliding block 301 slides towards the piston rod 1403 of the syringe 14 due to the forward rotation of the screw rod 303, and the reverse rotation of the motor drives the screw rod 303 to rotate reversely, and the sliding block 301 slides away from the piston rod 1403 of the syringe 14 due to the reverse rotation of the screw rod 303;

[0099] Herein, the sliding block 301 can be driven to slide by the screw rod 303 transmission unit 3, or can be driven to slide by an electric push rod;

[0100] Through the above arrangement, the sliding direction of the sliding block 301 can be controlled, and thus the injection or back-pulling of the syringe 14 can be controlled, and the sliding of the sliding block 301 driven by the screw rod 303 can make the injection of the syringe 14 more stable.

[0101] In the embodiment, please refer to Figures 4 to 6 , the push-pull execution unit 4 further comprises a gear 402, a rack 403, a gear connecting column 404 and an L-shaped clamping block 405;

[0102] The push block 401 is internally provided with a cavity;

[0103] The gear connecting column 404 is fixedly installed in the cavity, and the axial direction of the gear connecting column 404 is parallel to the axial direction of the syringe 14;

[0104] The gear 402 is rotationally installed on the gear connecting column 404, and the rotation axis of the gear 402 is parallel to the axial direction of the gear connecting column 404;

[0105] The number of the racks 403 is two, the two racks 403 are slidingly installed in the cavities, the two racks 403 are symmetrically arranged at two sides of the gear 402, the rack 403 is in mesh with the gear 402, one end of the rack 403 slidingly extends the pushing block 401, the end of the rack 403 slidingly extending the pushing block 401 is a telescopic end, the sliding direction of the rack 403 is perpendicular to the rotation axis of the gear 402;

[0106] The number of the L-shaped clamping blocks 405 is two, the vertical end of the L-shaped clamping block 405 is a limiting end, the horizontal end of the L-shaped clamping block 405 is a connecting end, the connecting ends of the two L-shaped clamping blocks 405 are oppositely and fixedly installed on the telescopic ends of the two racks 403, the limiting ends are located in front of the pushing block 401, the limiting ends are oppositely arranged, the distance between the limiting end and the end face of the pushing block 401 is greater than the thickness of the push plate 1404, the limiting end and the front end face of the pushing block 401 form a clamping space, and the push plate 1404 is located in the clamping space.

[0107] Here, when the two L-shaped clamping blocks 405 are simultaneously pressed, the two L-shaped clamping blocks 405 simultaneously slide towards each other, at this time, the rear end face of the limiting end and the front end face of the pushing block 401 form a clamping space, when the push plate 1404 is located in the clamping space, the front end face of the pushing block 401 contacts the push plate 1404 to push the piston of the syringe 14 forward when the screw rod 303 sliding block 301 moves forward, and the rear end face of the limiting end contacts the push plate 1404 to pull the piston of the syringe 14 backward when the screw rod 303 sliding block 301 moves backward.

[0108] Through the above arrangement, the push-pull execution unit 4 can make the piston rod 1403 of the syringe 14 reciprocate through the pushing block 401 and the L-shaped clamping block 405, so as to achieve the actions of injection and suction of the syringe 14, and the form of the gear 402 and the rack 403 makes the operation more convenient and increases the work efficiency of medical staff.

[0109] In the embodiment, please refer to Figure 1 、 Figure 7 and Figure 9 , the nerve block injection pump further comprises a nerve block needle 5, a medical hose 6 and a controller 7.

[0110] The nerve block needle 5 comprises a needle head 501 and a transfusion connector 502, and the needle head 501 is fixedly installed on the transfusion connector 502.

[0111] One end of the medical hose 6 is communicated with the injection port of the syringe 14, and the other end of the medical hose 6 is communicated with the needle head 501 through the transfusion connector 502.

[0112] The controller 7 comprises a control handle 701, a first fixing cover 702 and a second fixing cover 703;

[0113] A guide groove 7011 for accommodating the medical hose 6 is formed in the side wall of the control handle 701, and the two ends of the guide groove 7011 extend along the guide direction and penetrate the front and rear end faces of the control handle 701 respectively;

[0114] The first fixing cover 702 is fixedly installed on the control handle 701, and a first groove is formed in the first fixing cover 702, the two ends of the first groove extend and penetrate the two end faces of the first fixing cover 702 respectively, and the extension direction of the first groove is parallel to the axis of the infusion connector 502; one end of the first groove close to the control handle is communicated with the guide groove 7011, and the other end of the first groove can pass through the needle 501;

[0115] The second fixing cover 703 is rotatably installed on the first fixing cover 702, the rotation axis of the second fixing cover 703 is parallel to the axis of the nerve block needle 5, a second groove is formed in the second fixing cover 703, the two ends of the second groove extend and penetrate the two end faces of the second fixing cover 703 respectively, and the extension direction of the second groove is parallel to the axis of the infusion connector 502; one end of the second groove close to the control handle is communicated with the guide groove 7011, and the other end of the second groove can pass through the needle 501, the first groove and the second groove cooperatively form a limiting groove, the limiting groove corresponds to the shape of the infusion connector 502, and the limiting groove limits the infusion connector 502, and the second fixing cover 703 can be clamped on the first fixing cover 702 to fix the controller 7 on the infusion connector 502;

[0116] Here, the infusion connector 502 has a shape structure of large in the middle and small at both sides, the limiting groove can wrap the infusion connector 502 and fix the first fixing cover 702 and the second fixing cover 703 on the infusion connector 502;

[0117] Here, the detachable manner of fixing the second fixing cover 703 on the first fixing cover 702 is not limited, which can be in the form of clamping or through magnetic attraction;

[0118] Through the above arrangement, the medical staff only needs to hold the control handle 701 when operating, and can simultaneously perform puncture and other operations, the whole process is simple and convenient to operate, which accords with the puncture operation habit of doctors and improves the convenience and efficiency of operation.

[0119] Please refer to Figures 1 to 5 , an observation window 7021 is formed in the first fixing cover 702;

[0120] The observation window 7021 is located between the hand control handle 701 and the first groove;

[0121] Here, the observation window 7021 penetrates the first fixed cover 702, and the observation area of the observation window 7021 is opposite to the medical hose 6. When the negative pressure backflow operation is performed, the doctor can observe whether the blood backflow phenomenon occurs in the medical hose 6 under the observation window 7021 to determine whether the puncture operation of the doctor has penetrated the blood vessel;

[0122] Here, the observation window 7021 can also be a transparent plastic plate fixedly installed on the first fixed cover 702, or a transparent glass plate fixedly installed on the first fixed cover 702;

[0123] Through the above arrangement, the medical staff can directly observe whether the blood is drawn into the medical hose 6 when the syringe 14 is backflowed, and then determine whether the puncture position is accurate, thereby effectively improving the safety of the operation of the medical staff and making the observation process more convenient and direct.

[0124] In the embodiment, please refer to Figure 1 , Figure 7 and Figure 10 , the nerve block injection pump further comprises a controller 8, an advance signal transmitter 9 and a retreat signal transmitter 10;

[0125] The controller 8 is fixedly installed on the injection pump shell 1, and the controller 8 is electrically connected with the rotating power source 302. The controller 8 can control the rotating direction of the rotating power source 302;

[0126] Here, in the embodiment, the rotating power source 302 is a motor, and the controller 8 can control the motor to rotate forward or reverse through the electrical connection with the motor;

[0127] The advance signal transmitter 9 is fixedly installed on the handle of the controller 7, and the advance signal transmitter 9 is electrically connected with the controller 8. The advance signal transmitter 9 transmits the advance signal and controls the slider 301 to advance;

[0128] The retreat signal transmitter 10 is fixedly installed on the handle of the controller 7, and the retreat signal transmitter 10 is electrically connected with the controller 8. The retreat signal transmitter 10 transmits the retreat signal and controls the slider 301 to retreat;

[0129] Here, as Figure 10As shown in the flow chart, the advancing signal transmitter 9 transmits an advancing signal to the controller 8, which controls the motor to rotate forward after receiving the advancing signal, and the motor drives the screw rod 303 to rotate forward, so that the sliding block 301 slides towards the piston rod 1403 of the syringe 14; at this time, the push block 401 connected with the sliding block 301 moves, and the piston rod 1403 of the syringe 14 is pushed, so that the syringe 14 starts to inject the nerve blocking agent; the retreating signal transmitter 10 transmits a retreating signal to the controller 8, which controls the motor to rotate reversely after receiving the retreating signal, and the motor drives the screw rod 303 to rotate reversely, so that the sliding block 301 slides away from the piston rod 1403 of the syringe 14; at this time, the L-shaped clamping block 405 drives the push plate 1404 to move backward and then pulls back the piston rod 1403 of the syringe 14, so that the syringe 14 starts to pull back;

[0130] Here, the rotating speed of the motor can also be controlled by setting a rotating speed controller, an acceleration signal transmitter and a deceleration signal transmitter. The acceleration signal transmitter transmits an acceleration signal to the rotating speed controller, which accelerates the rotating speed of the motor after receiving the acceleration signal. For example, after pressing the acceleration signal transmitter, the motor changes from the original rotating speed V to a new rotating speed V1, the screw rod 303 moves at a uniform speed of V1, the sliding block 301 and the push-pull execution unit 4 connected with the sliding block 301 move at a uniform speed of V1, and the piston rod 1403 of the syringe 14 moves at a uniform speed. The deceleration signal transmitter transmits a deceleration signal to the rotating speed controller, which decelerates the rotating speed of the motor after receiving the deceleration signal. For example, after pressing the deceleration signal transmitter, the motor changes from the original rotating speed V to a new rotating speed V2, the screw rod 303 moves at a uniform speed of V2, the sliding block 301 and the push-pull execution unit 4 connected with the sliding block 301 move at a uniform speed of V2, and the piston rod 1403 of the syringe 14 moves at a uniform speed.

[0131] Here, the rotating speed controller can be separately set from the controller 8, or the rotating speed controller and the controller 8 can be integrally set.

[0132] Through this setting, the doctor can directly press the advancing signal transmitter 9 or the retreating signal transmitter 10 on the operation handle with one hand to control the injection of the nerve blocking agent or pull back the syringe 14 for safety inspection after puncturing the patient, which makes the operation of the doctor more convenient and saves human resources.

[0133] In this embodiment, please refer to Figure 8 , the nerve blocking agent injection pump further comprises a U-shaped fixed clamp 11, a movable clamping block 12 and a screw rod 13.

[0134] The U-shaped fixing clamp 11 comprises two side plates and a top plate, one of the side plates of the U-shaped fixing clamp 11 is fixedly installed on the injection pump shell 1;

[0135] Here, one of the side plates of the U-shaped fixing clamp 11 can be fixedly installed on the back plate of the injection pump shell 1, or the top plate of the U-shaped fixing clamp 11 can be fixedly installed on the back plate of the injection pump shell 1;

[0136] The screw rod 13 penetrates one of the side plates of the U-shaped fixing clamp 11 and is threadedly connected with the side plate, and the rotation axis of the screw rod 13 is perpendicular to the side wall of the side plate;

[0137] The movable clamping block 12 is slidingly installed between the two side plates, the sliding direction of the movable clamping block 12 is parallel to the rotation axis of the screw rod 13, and the movable clamping block 12 is rotationally connected to the end of the screw rod 13;

[0138] Here, the U-shaped fixing clamp 11, the movable clamping block 12 and the screw rod 13 form a set of fixing mechanisms, and the number of the fixing mechanisms is not limited, and there can be multiple sets of fixing mechanisms, the axes of the multiple sets of fixing mechanisms coincide and are parallel to the axis of the syringe 14;

[0139] Here, the side plate threadedly connected with the screw rod 13 is a connecting side plate, and the other side plate is a clamping side plate; the distance between the movable clamping block 12 and the clamping side plate is greater than the diameter of the rail of the operating table or the hospital bed, the movable clamping block 12 is slid towards the clamping side plate by rotating the screw rod 13, so that the rail is clamped between the movable clamping block 12 and the clamping side plate, and the nerve blocking agent injection pump is fixed on the rail of the operating table or the hospital bed, the movable clamping block 12 is slid away from the clamping side plate by rotating the screw rod 13 in the other direction, so that the clamping of the rail is released, and the nerve blocking agent injection pump is disassembled from the operating table or the hospital bed;

[0140] Through the above arrangement, the nerve blocking agent injection pump can be conveniently disassembled and assembled at each position of the operating table or the hospital bed, the space for placing the nerve blocking agent injection pump is saved, and the fixing and disassembling of the nerve blocking agent injection pump is simple and convenient for the operation of medical staff.

[0141] The specific use mode of the embodiment is as follows:

[0142] In use, the medical staff first pulls the length clamping block 2021 to the appropriate position according to the length of the syringe 14 to be used, then places the wing plate 1402 on the barrel 1401 of the syringe 14 in the U-shaped groove of the length clamping block 2021, and places the syringe 14 on the V-shaped base 201 along the length direction of the V-shaped base 201, at this time, the length clamping block 2021 is released, and the length clamping block 2021 will automatically clamp the syringe 14 on the baffle 2022 according to the elastic force of the clamping spring 2023; then, the doctor connects the nerve block needle 5 and the syringe 14 through the medical hose 6, after the connection is completed, the second fixed cover 703 is rotated to separate the second fixed cover 703 and the first fixed cover 702, the control handle 701 is sleeved on the medical hose 6 through the guide groove 7011, the second fixed cover 703 is rotated again to limit the infusion connector 502 in the first groove and the second groove, and the second fixed cover 703 is clamped on the first fixed cover 702 to fix the control handle 701 at the infusion connector 502. Next, the forward signal transmitter 9 is pressed, and the push block 401 is driven by the slider 301 to move forward until it is tightly attached to the push plate 1404. At this time, the two L-shaped clamping blocks 405 are pressed at the same time to make the push plate 1404 located in the clamping space formed by the limiting end of the L-shaped clamping block 405 and the front end surface of the push block 401. After the doctor finds the patient's lesion through ultrasound guidance, the needle 501 is used to puncture the patient's body by using the control handle 701. After the puncture is completed, the L-shaped clamping block 405 is first driven to retract the piston rod 1403 of the syringe 14 by pressing the backward signal transmitter 10, and the doctor needs to observe whether there is blood in the medical hose 6 through the observation window 7021. If there is blood, it means that the needle 501 may have pierced the blood vessel, and at this time, the position of the needle 501 needs to be adjusted to avoid the risk of injecting drugs; if there is no blood, after it is determined that the needle 501 has not pierced the blood vessel, the piston rod 1403 of the syringe 14 is continuously pushed by the push block 401 by pressing the forward signal transmitter 9 to inject the nerve block agent, and when the injection is completed, the two L-shaped clamping blocks 405 are pulled to the two sides at the same time to separate the two L-shaped clamping blocks 405 to the two sides to make the push plate 1404 separate from the clamping space, and when the push plate 1404 separates from the clamping space, the push block 401 is retreated to the original position by pressing the backward signal transmitter 10, the length clamping block 2021 is continuously pulled to release the clamping of the syringe 14, and the syringe 14 is taken out from the nerve block agent injection pump.

[0143] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A nerve block injection pump, characterized by, The nerve block injection pump comprises: an injection pump shell; an injector fixing unit, which comprises a V-shaped base and a length fixing module, the V-shaped base is fixedly installed on the injection pump shell, the injector is placed in the V-shaped base along the length direction of the V-shaped base, and the length fixing module comprises a length clamping block and a baffle, the baffle is located in front of the injector and limits the barrel of the injector, and the length clamping block is slidably arranged, the sliding direction of the length clamping block is parallel to the axis direction of the injector, the length clamping block is located behind the injector and clamps the wing plate of the barrel of the injector; a sliding block, which is slidably arranged on the injection pump shell, and the sliding direction of the sliding block is parallel to the axis direction of the injector; a push-pull execution unit, which comprises a push block, the push block is fixedly installed on the sliding block, the push block is located behind the piston rod of the injector, and the push block slides along with the sliding block and pushes the piston rod of the injector.

2. A nerve block agent injection pump according to claim 1, wherein The length fixing module further comprises a clamping spring and a clamping sliding rail; the clamping sliding rail is fixedly installed on the injection pump shell, and the guide direction of the clamping sliding rail is parallel to the length direction of the V-shaped base; the length clamping block is slidably arranged on the clamping sliding rail; the stretching direction of the clamping spring is parallel to the guide direction of the clamping sliding rail, one end of the clamping spring is fixedly connected with the V-shaped base, and the other end of the clamping spring is fixedly connected with the length clamping block.

3. A nerve block agent injection pump according to claim 2, wherein The length fixing module further comprises a limiting block; the limiting block is fixedly installed on the injection pump shell, and the limiting block blocks the sliding of the length clamping block; the length clamping block slides between the limiting block and the V-shaped base.

4. A nerve block agent injection pump according to claim 1, wherein The screw rod transmission unit further comprises a rotating power source, a screw rod and a screw rod sliding rail; the screw rod is rotatably arranged on the injection pump shell, and the rotating axis of the screw rod is parallel to the axis direction of the injector; the rotating power source is fixedly installed on the injection pump shell, and the rotating power source drives the screw rod to rotate forward or reversely; the screw rod sliding rail is fixedly installed on the injection pump shell, and the guide direction of the screw rod sliding rail is parallel to the axis direction of the screw rod; the sliding block is threadedly connected with the screw rod, the sliding block is slidably arranged on the screw rod sliding rail, and the sliding block slides along with the rotation of the screw rod.

5. A nerve block agent injection pump according to claim 1, wherein The push-pull execution unit further comprises a gear, a rack, a gear connecting column and an L-shaped clamping block; the push block is internally provided with a cavity; the gear connecting column is fixedly installed in the cavity, and the axis direction of the gear connecting column is parallel to the axis direction of the injector; the gear is rotatably arranged on the gear connecting column, and the rotating axis of the gear is parallel to the axis of the gear connecting column; the number of the racks is two, the two racks are slidably arranged in the cavity, the two racks are symmetrically arranged at the two sides of the gear, the rack is meshed with the gear, one end of the rack slides out of the push block, the end of the rack sliding out of the push block is a telescopic end, and the sliding direction of the rack is perpendicular to the rotating axis of the gear. The push plate is arranged on the tail end of the piston rod end of the syringe, the number of the L-shaped clamping blocks is two, the vertical end of the L-shaped clamping block is the limiting end, the horizontal end of the L-shaped clamping block is the connecting end, the connecting ends of the two L-shaped clamping blocks are oppositely fixedly installed on the telescopic ends of the two racks, the two limiting ends are located in front of the push block, the two limiting ends are oppositely arranged, the distance between the limiting end and the end face of the push block is greater than the thickness of the push plate, the limiting end and the front end face of the push block form a clamping space, and the push plate is located in the clamping space.

6. A nerve block agent injection pump according to claim 1, wherein The nerve block injection pump further comprises a nerve block needle, a medical hose and a controller; The nerve block needle comprises a needle head and a transfusion connector, and the needle head is fixedly installed on the transfusion connector; One end of the medical hose is communicated with the injection port of the syringe, and the other end of the medical hose is communicated with the needle head through the transfusion connector; The controller comprises a control handle, a first fixed cover and a second fixed cover; A guide groove for accommodating the medical hose is formed in the side wall of the control handle, and the two ends of the guide groove extend along the guide direction and penetrate through the front and rear end faces of the control handle respectively; The first fixed cover is fixedly installed on the control handle, a first groove is formed in the first fixed cover, the two ends of the first groove extend and penetrate through the two end faces of the first fixed cover respectively, and the extension direction of the first groove is parallel to the axis of the transfusion connector; one end of the first groove is communicated with the guide groove, and the other end of the first groove can allow the needle head to pass through; The second fixed cover is rotatably installed on the first fixed cover, the rotation axis of the second fixed cover is parallel to the axis of the nerve block needle, a second groove is formed in the second fixed cover, the two ends of the second groove extend and penetrate through the two end faces of the second fixed cover respectively, and the extension direction of the second groove is parallel to the axis of the transfusion connector; one end of the second groove is communicated with the guide groove, and the other end of the second groove can allow the needle head to pass through; the first groove and the second groove cooperatively form a limiting groove, the limiting groove corresponds to the shape of the transfusion connector, and the limiting groove limits the transfusion connector; the second fixed cover can be clamped on the first fixed cover, so that the controller is fixedly installed on the transfusion connector.

7. A nerve block injection pump according to claim 6, wherein, An observation window is formed in the first fixed cover; The observation window is located between the control handle and the first groove.

8. A nerve block agent injection pump according to claim 1, wherein The nerve block injection pump further comprises a controller, an advancing signal transmitter and a retreating signal transmitter; The controller is fixedly installed on the injection pump housing, the controller is electrically connected with the rotating power source, and the controller can control the rotating direction of the rotating power source; The advancing signal transmitter is fixedly installed on the control handle, the advancing signal transmitter is electrically connected with the controller, the advancing signal transmitter transmits an advancing signal and controls the advancing of the sliding block; The retreating signal transmitter is fixedly installed on the control handle, the retreating signal transmitter is electrically connected with the controller, the retreating signal transmitter transmits a retreating signal and controls the retreating of the sliding block.

9. A nerve block agent injection pump according to claim 1, wherein The nerve block injection pump further comprises a U-shaped fixed clamp, a movable clamping block and a screw rod. The U-shaped fixing clamp comprises two side plates and a top plate, one of the side plates of the U-shaped fixing clamp is fixedly installed on the injection pump shell; The screw rod penetrates one of the side plates of the U-shaped fixing clamp and is threadedly connected with the side plate, and the rotation axis of the screw rod is perpendicular to the side wall of the side plate; The movable clamping block is slidingly installed between the two side plates, the sliding direction of the movable clamping block is parallel to the rotation axis of the screw rod, and the movable clamping block is rotationally connected to the end of the screw rod.

Images