Needleless injection device

Abstract

The utility model discloses a needleless injection device which comprises an operation tube, a jet base, a micro injection pump and a power source, the jet base is located at the bottom of the operation tube and fixedly connected with the operation tube, the micro injection pump is fixedly connected with the inner wall of the operation tube, and the bottom of the operation tube is fixedly connected with an adsorption assembly used for being attached to the skin. The utility model relates to the technical field of injection devices. According to the needleless injection device, through the arrangement of the liquid medicine storage assembly, the device can push a blocking sleeve through a sealing spring, liquid medicine is blocked by a sealing ring and the blocking sleeve when a discharging pipe is not used for outputting the liquid medicine, and during use, a liquid medicine barrel is installed in place, and an ejector pin in a micro injection pump directly extrudes the blocking sleeve to change the position; meanwhile, the elastic feeding pipe is communicated with the discharging pipe, the diameter of the elastic feeding pipe is slightly larger than that of the discharging pipe, liquid medicine in the liquid medicine barrel is directly conveyed to the micro injection pump through the elastic feeding pipe, and the liquid medicine is effectively prevented from overflowing.

Description

Technical Field

[0001] The utility model relates to the technical field of injection devices, in particular to a needle-free injection device. Background Art

[0002] Animal vaccines generally refer to animal biological vaccines. During large-scale animal vaccinations, if the needle is replaced for each animal, the injection time and cost will increase significantly. Therefore, many units use needle-free injection devices for vaccinations.

[0003] The utility model with the announcement number CN218793404U discloses a needle-free injection device, including a driving mechanism, a cam, a spring energy storage component, and a syringe component. The spring energy storage component includes a sliding rod, a lever arranged on the sliding rod, and a power spring sleeved on the sliding rod. The driving mechanism is used to drive the cam to rotate. The rotation of the cam drives the lever, which in turn drives the sliding rod to slide up and down. When the sliding rod moves upward, the power spring is compressed to store energy. When the cam continues to rotate until the lever loses support, the compressed energy of the power spring is instantly released, and the sliding rod quickly moves downward to drive the syringe component to inject liquid. The utility model realizes the compressed energy storage and instant release of the compressed energy of the power spring by driving the cam to rotate. The entire device structure is simple and practical. Compared with the prior art syringe device, it consumes less energy and can be designed to be more compact and easy to carry.

[0004] When the device in the above application is operated, after the drug storage cartridge is directly added, one end of the drug storage cartridge is connected to the injection pump, but the connection is very prone to leakage and cannot ensure stable output. At the same time, many animals will shake their bodies and refuse to cooperate with the injection. The needle-free syringe lacks a fixed needle, which often slides and shifts on the surface of the animal's skin, directly affecting the injection effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a needle-free injection device, which solves the problem that one end of the drug storage cartridge is connected to the injection pump, but the connection is very prone to leakage and stable output cannot be guaranteed. At the same time, many animals will shake their bodies and refuse to cooperate with the injection. The needle-free syringe lacks a fixed needle, and it often slides and shifts on the surface of the animal's skin, directly affecting the injection effect.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a needle-free injection device, comprising an operating tube, an injection base, a micro-injection pump and a power supply, wherein the injection base is located at the bottom of the operating tube and fixedly connected thereto, the micro-injection pump is fixedly connected to the inner wall of the operating tube, the power supply is fixedly connected to the inner wall of the operating tube, the bottom of the operating tube is fixedly connected with an adsorption component for fitting with the skin, both sides of the inner wall of the operating tube are fixedly connected with a liquid medicine storage component for placing liquid medicine, the liquid medicine storage component comprises a guide sleeve fixedly connected to the inner wall of the operating tube, the surface of the guide sleeve is movably connected with a liquid medicine cylinder, the bottom of the liquid medicine cylinder is provided with a discharge pipe, the bottom of the inner wall of the discharge tube is provided with a sealing ring, the inner wall of the discharge tube is slidably connected with a blocking sleeve, and one side of the inner wall of the blocking sleeve is fixedly connected with a sealing spring.

[0007] Preferably, the adsorption assembly comprises a vacuum cover fixedly connected to the bottom of the operating tube, and the vacuum cover is made of soft resin.

[0008] Preferably, an air suction pipe penetrates the inner wall of the vacuum cover, and the number of the air suction pipes is set to two.

[0009] Preferably, one end of the air suction pipe is connected to a micro air pump, and the model of the micro air pump is D23.

[0010] Preferably, the feed port of the micro-injection pump is connected to an elastic feed pipe, and a ejector pin is fixedly arranged at the middle position of the feed port of the micro-injection pump via a stabilizing pin.

[0011] Preferably, the top of the operating tube is rotatably connected to a blocking plate via a damping shaft, and a friction pad is provided at the bottom of the blocking plate.

[0012] Beneficial Effects

[0013] The utility model provides a needle-free injection device. Compared with the prior art, it has the following beneficial effects:

[0014] (1) The needle-free injection device has a liquid medicine storage assembly for placing liquid medicine fixedly connected to both sides of the inner wall of the operating tube. The liquid medicine storage assembly includes a guide sleeve fixedly connected to the inner wall of the operating tube, a liquid medicine cylinder movably connected to the surface of the guide sleeve, a discharge pipe is arranged at the bottom of the liquid medicine cylinder, a sealing ring is arranged at the bottom of the inner wall of the discharge pipe, a blocking sleeve is slidably connected to the inner wall of the discharge pipe, a sealing spring is fixedly connected to one side of the inner wall of the blocking sleeve, a feed port of the micro-injection pump is connected to an elastic feed pipe, and a ejector pin is fixedly arranged in the middle of the feed port of the micro-injection pump through a stabilizing needle. The top of the operating tube is rotatably connected to a blocking plate through a damping shaft, and a friction pad is arranged at the bottom of the blocking plate. Through the arrangement of the medicine storage component, the device can push the blocking sleeve through the sealing spring. When the discharge tube is not used to output the medicine, the medicine is blocked by the sealing ring and the blocking sleeve. When in use, the medicine cylinder is installed in place, and the ejector pin in the micro-injection pump directly squeezes the blocking sleeve to change its position. At the same time, the elastic feed tube is connected to the discharge tube, and the diameter of the elastic feed tube is slightly larger than the diameter of the discharge tube. The medicine in the medicine cylinder is directly transported to the micro-injection pump through the elastic feed tube, which effectively prevents the medicine from overflowing.

[0015] (2) The needle-free injection device includes a vacuum cover fixedly connected to the bottom of the operating tube through an adsorption component. The vacuum cover is made of soft resin. An air suction pipe runs through the inner wall of the vacuum cover. The number of the air suction pipes is set to two. One end of the air suction pipe is connected to a micro air pump. The model of the micro air pump is D23. Through the setting of the adsorption component, the device can directly extract and discharge the air in the vacuum cover through the micro air pump. After the vacuum cover adsorbs the skin surface, a large amount of air inside is directly discharged to form a negative pressure environment. It can ensure that the device as a whole is adsorbed to the skin, avoid random sliding, and effectively ensure the injection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 It is a top view of the ejector structure of the utility model;

[0020] Figure 5 It is a cross-sectional view of the ejector structure of the utility model.

[0021] In the figure: 1. operating tube; 2. injection base; 3. micro injection pump; 4. power supply; 5. adsorption assembly; 51. vacuum cover; 52. suction pipe; 53. micro air pump; 6. liquid medicine storage assembly; 61. guide sleeve; 62. liquid medicine cylinder; 63. discharge pipe; 64. sealing ring; 65. blocking sleeve; 66. sealing spring; 67. elastic feed pipe; 68. ejector pin; 69. blocking plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides two technical solutions:

[0024] Embodiment 1, a needle-free injection device, comprising an operating tube 1, an injection base 2, a micro-injection pump 3 and a power supply 4, wherein the injection base 2 is located at the bottom of the operating tube 1 and is fixedly connected thereto, a hose built into the injection base 2 is communicated with the micro-injection pump 3, the micro-injection pump 3 is fixedly connected to the inner wall of the operating tube 1, the power supply 4 is fixedly connected to the inner wall of the operating tube 1, an adsorption component 5 for fitting with the skin is fixedly connected to the bottom of the operating tube 1, a liquid medicine storage component 6 for placing liquid medicine is fixedly connected to both sides of the inner wall of the operating tube 1, the liquid medicine storage component 6 comprises a guide sleeve 61 fixedly connected to the inner wall of the operating tube 1, a liquid medicine cylinder 62 is movably connected to the surface of the guide sleeve 61, a discharge pipe 63 is arranged at the bottom of the liquid medicine cylinder 62, and the inner wall of the discharge pipe 63 is fixedly connected to the inner wall of the discharge pipe 63. A sealing ring 64 is provided at the bottom, and a blocking sleeve 65 is slidably connected to the inner wall of the discharge pipe 63. A sealing spring 66 is fixedly connected to one side of the inner wall of the blocking sleeve 65. Through the setting of the liquid medicine storage component 6, the device can push the blocking sleeve 65 through the sealing spring 66. When the discharge pipe 63 is not used to output the medicine, the medicine is blocked by the sealing ring 64 and the blocking sleeve 65. When in use, the medicine liquid cylinder 62 is installed in place, and the ejector pin 68 in the micro-injection pump 3 directly squeezes the blocking sleeve 65 to change its position. At the same time, the elastic feed pipe 67 is connected to the discharge pipe 63, and the diameter of the elastic feed pipe 67 is slightly larger than the diameter of the discharge pipe 63. The medicine in the medicine liquid cylinder 62 is directly transported to the micro-injection pump 3 through the elastic feed pipe 67, which effectively prevents the medicine from overflowing.

[0025] Embodiment 2, which is different from Embodiment 1 mainly in that: a needle-free injection device, the adsorption assembly 5 includes a vacuum cover 51 fixedly connected to the bottom of the operating tube 1, the vacuum cover 51 is made of soft resin, the inner wall of the vacuum cover 51 is penetrated by an air suction pipe 52, the number of the air suction pipes 52 is set to two, one end of the air suction pipe 52 is connected to a micro air pump 53, the model of the micro air pump 53 is D23, the feed port of the micro injection pump 3 is connected to an elastic feed pipe 67, the diameter of the elastic feed pipe 67 is larger than the diameter of the discharge pipe 63, a sealing pad is set on the surface of the elastic feed pipe 67, and the micro injection pump 3 is connected to the discharge pipe 63. A ejector pin 68 is fixedly provided in the middle position of the material port through a stabilizing needle. The ejector pin 68 is a T-shaped structure. The transverse structure is fixedly connected to the inner wall of the feed port of the micro-injection pump 3. The top of the operating tube 1 is rotatably connected to a blocking plate 69 through a damping shaft. A friction pad is provided at the bottom of the blocking plate 69. Through the setting of the adsorption component 5, the device can directly extract and discharge the air in the vacuum cover 51 through the micro air pump 53. After the vacuum cover 51 adsorbs the skin surface, a large amount of air inside is directly discharged to form a negative pressure environment, which can ensure that the device as a whole is adsorbed to the skin, avoid random sliding, and effectively ensure the injection effect.

[0026] The surface of the operating tube 1 is provided with switches such as a micro air pump 53 and a micro injection pump 3 . The power source 4 is a rechargeable battery using mature technology. A charging interface of the power source 4 is provided on the surface of the operating tube 1 .

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] During operation, the injection base 2 is aimed at the skin, the vacuum cover 51 is adsorbed on the skin surface, the micro air pump 53 is turned on, and a large amount of air in the vacuum cover 51 is sucked out through the suction pipe 52, a negative pressure environment is formed inside the vacuum cover 51, and the vacuum cover 51 and the operating tube 1 are tightly fixed to the skin as a whole, the micro injection pump 3 is turned on, part of the medicine in the medicine cylinder 62 is extracted, forming a high-speed jet that is injected into the skin through the injection base 2, when the medicine cylinder 62 is used up, the blocking plate 69 is rotated around the damping axis, the medicine cylinder 62 is taken out and replaced, the new medicine cylinder 62 moves along the guide sleeve 61, the ejector pin 68 touches and pushes the blocking sleeve 65 in the discharge tube 63 to move up, at the same time, the blocking sleeve 65 in the discharge tube 63 is squeezed, and the bottom end of the discharge tube 63 is connected to the elastic feeding tube 67, and the two are connected. At this time, the blocking plate 69 is rotated to close, and the operating tube 1 is continued to be held for operation. When the device operation is completed, the device is restored.

[0029] 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.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A needle-free injection device, comprising an operating tube (1), an injection base (2), a micro-injection pump (3) and a power source (4), wherein the injection base (2) is located at the bottom of the operating tube (1) and is fixedly connected thereto, the micro-injection pump (3) is fixedly connected to the inner wall of the operating tube (1), and the power source (4) is fixedly connected to the inner wall of the operating tube (1), characterized in that: The bottom of the operation tube (1) is fixedly connected to an adsorption component (5) for contacting with the skin, and both sides of the inner wall of the operation tube (1) are fixedly connected to a liquid medicine storage component (6) for placing liquid medicine. The liquid medicine storage component (6) comprises a guide sleeve (61) fixedly connected to the inner wall of the operation tube (1), a liquid medicine cylinder (62) is movably connected to the surface of the guide sleeve (61), a discharge pipe (63) is arranged at the bottom of the liquid medicine cylinder (62), a sealing ring (64) is arranged at the bottom of the inner wall of the discharge pipe (63), a blocking sleeve (65) is slidably connected to the inner wall of the discharge pipe (63), and a sealing spring (66) is fixedly connected to one side of the inner wall of the blocking sleeve (65).

2. A needle-free injection device according to claim 1, characterized in that: The adsorption assembly (5) comprises a vacuum cover (51) fixedly connected to the bottom of the operating tube (1), and the vacuum cover (51) is made of soft resin.

3. A needle-free injection device according to claim 2, characterized in that: An air suction pipe (52) penetrates the inner wall of the vacuum cover (51), and the number of the air suction pipes (52) is set to two.

4. A needle-free injection device according to claim 3, characterized in that: One end of the air suction pipe (52) is connected to a micro air pump (53).

5. The needle-free injection device according to claim 1, characterized in that: The feed port of the micro-injection pump (3) is connected to an elastic feed pipe (67), and a ejector pin (68) is fixedly arranged at the middle position of the feed port of the micro-injection pump (3) via a stabilizing pin.

6. The needle-free injection device according to claim 1, characterized in that: The top of the operating tube (1) is rotatably connected to a blocking plate (69) via a damping shaft, and a friction pad is arranged at the bottom of the blocking plate (69).

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