CN220193710U

CN220193710U - Needleless injection device

Info

Publication number: CN220193710U
Application number: CN202321414941.0U
Authority: CN
Inventors: 崔礼博; 成书朋; 童黄荣; 张学福
Original assignee: Jiaxing Dexin Electronic Technology Co ltd
Current assignee: Jiaxing Dexin Electronic Technology Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-12-19
Anticipated expiration: 2033-06-06

Abstract

The present utility model provides a needleless injection device comprising: a gun body; a medicine bottle; and a controller including a power assembly, a motor assembly, and a brake assembly; the power assembly comprises a power cylinder and a piston assembly; the piston assembly comprises a piston rod and a piston sleeve; the power cylinder comprises a nitrogen spring cylinder and an output rod; the motor component is connected with the piston component and controls the relative power cylinder to move so as to form energy storage; the brake assembly comprises a brake block, a force applying unit and a buckle, one end of the brake block is sleeved on the output rod, and the other end of the brake block abuts against the buckle.

Description

Needleless injection device

Technical Field

The present utility model relates to a needleless injection device.

Background

The syringes in the prior art are classified into needle syringes and needleless injection devices. Among other things, needle injectors suffer from the following disadvantages: unsafe, with the needle, the needle is easy to cross-infect after repeated use; the disposable syringe is not environment-friendly, and is a medical waste which is difficult to treat; the injection is not efficient, continuous injection is not possible, time and labor are wasted, and consistency is difficult to ensure; the method is not intelligent, and is difficult to realize data and informatization. While pneumatic needleless injection devices have the following disadvantages: the air source and the air path are needed, and the portable and movable device is inconvenient to carry and move depending on the external environment; the air pressure fluctuation is difficult to control, and has a certain influence on stability.

The utility model discloses a gun type needleless injection device, which comprises a gun body, a driving piston, an energy storage mechanism, an inner hydraulic pipe, an outer hydraulic pipe, an energy storage mechanism, an injection one-way valve and an oil storage cylinder, wherein the gun type needleless injection device utilizes a piston rod to push a hydraulic rod when the pneumatic piston is triggered, the hydraulic rod drives the hydraulic piston to push hydraulic oil in a first oil cavity to enter a second oil cavity, and forces a stepping piston in the outer hydraulic pipe to drive a push rod to trigger forwards, so that liquid medicine in a medicine core at the head end of the outer hydraulic pipe is pushed out at a high speed by the push rod to complete single quantitative injection, and the hydraulic oil in the oil storage cylinder can be automatically supplemented into the first oil cavity when the hydraulic piston is retracted, and the injection one-way valve can prevent the hydraulic oil in the second oil cavity from returning to the first oil cavity when a hydraulic piston component is retracted, so that the position of the push rod is kept unchanged, and continuous repeated quantitative injection can be realized. The gun type needleless injection device needs an air source as power and is limited in use; and after energy storage, no braking device exists, and misoperation is easy.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a needleless injection device with reasonable structural design.

The technical scheme adopted by the embodiment of the utility model for solving the problems is as follows: a needleless injection device comprising:

a gun body having an injection unit;

a medicine bottle configured to supply a medicine liquid to the gun body; and

the controller comprises a power assembly, a motor assembly and a braking assembly;

the power assembly comprises a power cylinder and a piston assembly; the piston assembly comprises a piston rod and a piston sleeve, and the piston rod is connected with the piston sleeve; the power cylinder comprises a nitrogen spring cylinder and an output rod connected with the nitrogen spring cylinder, and the output rod is connected with the piston sleeve;

the motor component is connected with the piston component and controls the relative power cylinder to move so as to form energy storage;

the brake assembly comprises a brake block, a force application unit and a buckle, one end of the brake block is sleeved on the output rod, and the other end of the brake block is propped against the buckle; the force application unit applies force to the brake block along the length direction of the brake block so as to form an initial friction force F0 between the brake block and the output rod; the buckle provides an acting force F1 for the brake block so as to enable the brake block and the output rod to generate a movement trend of relative rotation, the brake block provides an acting force F2 for the output rod at a pressure point, and a locking force F3 is generated between the brake block and the output rod; and when F3 is greater than F0, the brake block locks the output rod.

The embodiment of the utility model further comprises a sliding block, wherein an output shaft of the motor assembly is connected with the sliding block, and the sliding block is connected with the piston rod.

The buckle of the embodiment of the utility model is hinged on the controller, and the sliding block is connected with the buckle through a connecting rod so as to control the rotation of the buckle.

The embodiment of the utility model further comprises a torsion spring, wherein the torsion spring is matched with the buckle, the buckle penetrates through the brake block and is limited on the brake block through a boss, and the torsion spring applies force to the buckle so that the buckle provides the acting force F1 to the brake block.

The force applying unit comprises an end part and an elastic part, wherein the end part is fixed on the brake block, and the elastic part is arranged at the end part and applies force to the brake block along the length direction of the brake block.

The gun body comprises a triggering mechanism, wherein the triggering mechanism comprises a safety helmet, a sliding rod and a safety switch, the safety helmet is slidably arranged at a nozzle of an injection unit of the gun body, the safety helmet is connected with the sliding rod, and the sliding rod is matched with the safety switch.

According to the embodiment of the utility model, when the safety helmet pushes the sliding rod and the sliding rod triggers the safety switch, the end part of the nozzle is exposed out of the safety helmet.

According to the embodiment of the utility model, the gun body and the controller are arranged in a split mode, the medicine bottle is arranged on the controller, and the medicine bottle is connected with an injection unit of the gun body through a pipeline.

The nozzle and/or the pipeline of the embodiment of the utility model are provided with one-way valves.

The gun body is provided with the RFID module which is configured to identify vaccine number information of the electronic ear tag.

Compared with the prior art, the utility model has one or more of the following advantages or effects: the structure is simple, and the design is reasonable; the brake component is arranged, so that the power cylinder can be ensured to be kept at a set position after being loaded and compressed; through the arrangement of the one-way valve, the back suction of the liquid medicine and air can be avoided; the piston rod has a movable space relative to the piston sleeve, so that liquid medicine leakage and injection errors caused by the braking component in the loading return motion can be avoided, and the possible instability of ejection force caused by the limitation of the braking device on the resistance of the nitrogen spring in the initial stage of release can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic view showing a front view of a needleless injection device in an embodiment of the present utility model.

Fig. 2 is a schematic view of the structure of the inside of the gun body in the embodiment of the present utility model.

Fig. 3 is an exploded view of a controller according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of the internal structure of the controller in the embodiment of the present utility model.

Fig. 5 is a schematic cross-sectional structure of a controller in an embodiment of the present utility model.

Fig. 6 is an enlarged view at a in fig. 5.

Fig. 7 is a schematic diagram of the cooperation of the power assembly, motor assembly and brake assembly according to an embodiment of the present utility model.

FIG. 8 is a schematic cross-sectional structural view of a power assembly according to an embodiment of the present utility model.

Fig. 9 is a schematic structural view of a force applying unit according to an embodiment of the present utility model.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. The directions such as "axial direction", "above", "below", etc. are hereinafter for the sake of clarity of the structural positional relationship, and are not limiting of the present utility model. In the present utility model, the terms "vertical", "horizontal", "parallel" are defined as: including + -10% cases based on standard definition. For example, vertical generally refers to an included angle of 90 degrees with respect to the reference line, but in the present utility model, vertical refers to a case including 80 degrees to 100 degrees or less.

Referring to fig. 1 to 9, the needleless injection device of the present embodiment comprises a gun body 1, a medicine bottle 2 and a controller 3.

The gun body 1 in this embodiment has an injection unit. The gun body 1 further comprises a housing 11, wherein a button 111 is arranged on the housing 11, and the button 111 is used for controlling injection. A display screen 15 may also be provided on the housing 11 for displaying basic injection information such as injection dose, number of injections, vaccine type, etc.

The medicine bottle 2 in this embodiment is configured to supply a medicine liquid to the gun body 1.

The controller 3 in this embodiment includes a power assembly 31, a motor assembly 32, and a brake assembly 33; the power assembly 31 comprises a power cylinder 311 and a piston assembly 312; the motor assembly 32 is coupled to the piston assembly 312 and directly or indirectly controls the movement of the relative cylinder 311 to provide energy storage.

Specifically, piston assembly 312 includes a piston rod 3121 and a piston sleeve 3122, piston rod 3121 being connected to piston sleeve 3122. The end of the piston rod 3121 is disposed within the free-running space 31221 within the piston sleeve 3122 such that the piston rod 3121 has an opposing running space with respect to the piston sleeve 3122. The free movement amount of the movable space is larger than the maximum return amount of the nitrogen spring cylinder 3111.

The power cylinder 311 includes a nitrogen spring cylinder 3111 and an output rod 3112 connected to the nitrogen spring cylinder 3111, the output rod 3112 being connected to the piston sleeve 3122. The nitrogen spring cylinder 3111 is a prior art and will not be described here.

The brake assembly 33 of the present embodiment includes a brake block 331, a force applying unit 332, and a buckle 333, wherein one end of the brake block 331 is sleeved on the output rod 3112, and the other end thereof abuts against the buckle 333; the force applying unit 332 applies force to the brake block 331 along the length direction of the brake block 331, so as to form an initial friction force F0 between the brake block 331 and the output rod 3112; the buckle 333 provides an acting force F1 to the brake block 331 (at a fulcrum B, the fulcrum B is a point of application of the buckle 333 to the brake block 331), so that a movement trend of relative rotation is generated between the brake block 331 and the output rod 3112, and the brake block 331 applies an acting force F2 to the output rod 3112 at a pressure point C (the pressure point C is a point of application of the brake block 331 to the output rod 3112), and a locking force F3 is generated between the brake block 331 and the output rod 3112 according to a lever principle; when F3 is greater than F0, the brake block 331 locks the output rod 3112, thereby ensuring that the cylinder 311 remains in the set position after loading compression.

The controller 3 in this embodiment is provided with a photosensor 3113 therein, and the photosensor 3113 is configured to generate a position signal and a speed signal. In use, the photoelectric sensor 3113 detects whether there is a position signal, and if so, performs the next detection: when the speed signal is detected to be smaller than a first preset value, the injector prompts and invokes a reset action; when the speed signal is detected to be between the first preset value and the second preset value, the nozzle 13 is prompted to be blocked, reset is invoked, and the device is adjusted. When the speed signal is detected to be between the second preset value and the third preset value, normal injection is carried out, and the next injection is continued; when the speed signal is detected to be larger than a third preset value, prompting that air exists in the pipeline, calling reset and adjusting equipment.

In the loading process, the motor assembly 32 drives the piston assembly 312, so as to drive the piston rod 3121 to move, thereby sucking the liquid medicine. Injection dose adjustment, power loading, automatic homing and brake assembly 33 release are accomplished by forward and reverse rotation of the motor of motor assembly 32. Injection dose = piston stroke times cross-sectional area a of piston chamber 3123, with piston stroke controlled by motor assembly 32.

The present embodiment further includes a slider 34, and an output shaft of the motor assembly 32 is connected to the slider 34, and the slider 34 is connected to the piston rod 3121. The motor assembly 32 drives the piston rod 3121 through the driving slider 34 to drive the output rod 3112, thereby completing loading. In this embodiment, the motor assembly 32 and the slider 34 are driven by a screw structure.

In this embodiment, the buckle 333 is hinged to the controller 3, and the slider 34 is connected to the buckle 333 through a connecting rod 35 to control the rotation of the buckle 333.

The present embodiment further includes a torsion spring 334, where the torsion spring 334 cooperates with the catch 333, the catch 333 passes through the brake block 331 and is limited on the brake block 331 by a boss 3331, and the torsion spring 334 applies a force to the catch 333, so that the catch 333 provides the acting force F1 to the brake block 331.

The force applying unit 332 of the present embodiment includes an end portion 3321 and an elastic member 3322, wherein the end portion 3321 is fixed on the brake block 331, and the elastic member 3322 is disposed on the end portion 3321 and applies force to the brake block 331 along the length direction of the brake block 331. The elastic member 3322 is a spring.

The gun body 1 according to this embodiment includes a triggering mechanism 12, the triggering mechanism 12 includes a safety cap 121, a sliding rod 122, and a safety switch 123, the safety cap 121 is slidably disposed at a nozzle 13 of an injection unit of the gun body 1, the safety cap 121 is connected with the sliding rod 122, and the sliding rod 122 is matched with the safety switch 123. When the safety cap 121 is pressed, the safety cap 121 pushes the slide rod 122, the slide rod triggers the safety switch 123 to enable the safety switch 123 to be closed, the injector can perform injection only when the safety switch 123 is closed, and misoperation can be prevented through the setting of the triggering mechanism 12. In actual use, the safety cap is propped against a target object (such as the skin of a pig), and then the safety switch 123 is triggered to be closed, so that the injection can be completed. When the trigger mechanism 12 triggers, a trigger signal is generated, so that the motor assembly 32 is driven, and the motor assembly 32 is linked with the power cylinder 311.

The elastic member may be provided in this embodiment, so that the helmet 121 may be pushed with a certain force. The elastic member may be a structure of the safety switch 123 itself.

In this embodiment, when the safety helmet 121 pushes the sliding bar 122 and causes the sliding bar 122 to trigger the safety switch 123, the end of the nozzle 13 is exposed outside the safety helmet 121. Whereby the nozzle 13 can be made to abut against the skin of the injection subject.

In this embodiment, the gun body 1 and the controller 3 are separately disposed, the medicine bottle 2 is disposed on the controller 3, and the medicine bottle 2 is connected with an injection unit of the gun body 1 through a pipeline. The cavity 1 is separated from the controller 3, and the controller 3 can be designed to be knapsack type, so that the gun is convenient to carry and is more beneficial to operating the gun body 1.

The nozzle 13 and/or the pipeline in this embodiment is provided with a one-way valve 14 to prevent backflow of the liquid medicine. The check valve 14 is a critical component of overall hydraulic circuit accuracy control, its quick response performance affects injection accuracy, requiring very rapid action before aspiration and injection of fluid into the piston chamber 3123 to avoid back aspiration of fluid and air. The check valve 14 has a short movement stroke and a small opening pressure, which is a necessary condition for realizing the accuracy control and the quick response of the hydraulic circuit.

The gun body 1 is provided with an RFID module which is configured to identify vaccine number information of an electronic ear tag. The RFID module can identify whether the vaccine number information of the electronic ear tag is wrong (mainly, the information of judging whether the vaccine is injected or not), if the read vaccine number information is the same as the vaccine number information to be injected by the device, the gun body 1 or the controller 3 can send out a warning, and an operator can select the next to-be-injected object (such as a pig) to be injected.

The injection of the nozzle 13 in this embodiment is performed through micro-holes, and the principle thereof is the prior art, and will not be described here.

The present embodiment further comprises a battery 4 for providing electric power.

The foregoing description of the utility model is merely exemplary of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. A needleless injection device comprising:

a gun body having an injection unit;

a medicine bottle configured to supply a medicine liquid to the gun body; and

the motor component is connected with the piston component and controls the power cylinder to move so as to form energy storage;

2. A needleless injection device as claimed in claim 1, in which: the motor assembly is characterized by further comprising a sliding block, wherein an output shaft of the motor assembly is connected with the sliding block, and the sliding block is connected with the piston rod.

3. A needleless injection device as claimed in claim 2, in which: the buckle is hinged to the controller, and the sliding block is connected with the buckle through a connecting rod so as to control the rotation of the buckle.

4. A needleless injection device as claimed in claim 3, in which: the brake block is characterized by further comprising a torsion spring, the torsion spring is matched with the buckle, the buckle penetrates through the brake block and is limited on the brake block through a boss, and the torsion spring applies force to the buckle to enable the buckle to provide the acting force F1 for the brake block.

5. A needleless injection device as claimed in claim 1, in which: the force applying unit comprises an end part and an elastic part, wherein the end part is fixed on the brake block, and the elastic part is arranged at the end part and applies force to the brake block along the length direction of the brake block.

6. A needleless injection device as claimed in claim 1, in which: the gun body comprises a triggering mechanism, the triggering mechanism comprises a safety helmet, a sliding rod and a safety switch, the safety helmet is slidably arranged at a nozzle of an injection unit of the gun body, the safety helmet is connected with the sliding rod, and the sliding rod is matched with the safety switch.

7. The needle-free injection device of claim 6, wherein: when the safety helmet pushes the sliding rod and the sliding rod triggers the safety switch, the end part of the nozzle is exposed out of the safety helmet.

8. The needle-free injection device of claim 6, wherein: the gun body and the controller are arranged in a split mode, the medicine bottle is arranged on the controller, and the medicine bottle is connected with an injection unit of the gun body through a pipeline.

9. A needleless injection device as claimed in claim 8, in which: and the nozzle and/or the pipeline is/are provided with a one-way valve.

10. A needleless injection device as claimed in claim 1, in which: and the gun body is provided with an RFID module which is configured to identify vaccine number information of the electronic ear tag.