Medicine injection device

Abstract

The utility model provides a medicine injection device which comprises a medicine injection switch, a first miniature tube and a second miniature tube, the medicine injection switch comprises an input end and an output end, internal pipelines of the input end and the output end are communicated with each other, and the input end comprises a first input port connected with the first miniature tube and a second input port connected with the second miniature tube. The inner pipeline of the input end is rotationally connected with a partition plate, the partition plate is used for partitioning the pipeline of the first input port and the pipeline of the second input port, the output end is provided with a plug moving in the inner pipeline of the output end, the plug is connected with the output end through an elastic piece, and the plug is fixedly connected with a first wedge block; the output end is fixedly connected with a fixing block, a groove is formed in the fixing block, a second wedge-shaped block matched with the first wedge-shaped block is arranged in the groove, and the second wedge-shaped block is connected with the fixing block through a second elastic piece. And the output quantity of the liquid medicine can be more accurately controlled.

Description

Technical Field

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

[0002] The drug injection device is usually composed of a micro tube and a drug injection switch. When injecting drugs, the drug solution is not injected all at once, but needs to be injected intermittently, and different types of drug solutions need to be replaced at the same time.

[0003] In the prior art, the drug injection switch is composed of a pipeline and a plug, and the pipeline and the plug are threadedly connected. When it is necessary to pause the drug injection, the plug is screwed into the pipeline through the thread to block the input of the drug solution. Due to the threaded connection method, it takes time to screw the plug into the pipeline, and the input amount of the drug solution cannot be accurately controlled. At the same time, when changing the drug solution, it also takes time to pull out the microtube from the drug injection switch, and it is also easy to cause the incompletely injected drug solution to overflow. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a drug injection device, which aims to solve the technical problems in the prior art that, due to the threaded connection between the plug and the pipeline, it takes time to screw the plug into the pipeline, and the input amount of the drug solution cannot be accurately controlled. At the same time, when changing the drug solution, it takes time to pull out the microtube from the drug injection switch, and it is also easy to cause the incompletely injected drug solution to overflow.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A drug injection device comprises a drug injection switch, and a first microtube and a second microtube connected to the drug injection switch, the drug injection switch comprises an input end and an output end whose internal pipelines are interconnected, the input end comprises a first input port connected to the first microtube, and a second input port connected to the second microtube, the internal pipeline of the input end is rotatably connected to a partition plate, the partition plate is used to separate the pipeline at the first input port and the pipeline at the second input port, the output end is provided with a plug that is movable in the internal pipeline of the output end, the plug is connected to the output end by an elastic member, a first wedge block is fixedly connected to the plug, a fixed block is fixedly connected to the output end, a groove is provided in the fixed block, a second wedge block matched with the first wedge block is provided in the groove, and the second wedge block is connected to the fixed block by a second elastic member.

[0007] According to one aspect of the above technical solution, an output port for outputting the drug solution is provided at the input end.

[0008] According to one aspect of the above technical solution, a blowing assembly is further provided at the output end, the blowing assembly includes an air bag located on the outer surface of the output end, and a blowing nozzle located at the internal pipeline of the output end, the air bag is connected to the blowing nozzle.

[0009] According to one aspect of the above technical solution, the mouthpiece is arranged toward the input end.

[0010] According to one aspect of the above technical solution, the plug and the airbag are connected via a connecting rod.

[0011] According to one aspect of the above technical solution, the plug and the airbag are located in a direction of the output end away from the ground.

[0012] According to one aspect of the above technical solution, a rotating shaft is provided at the input end, the rotating shaft penetrates through the internal pipeline of the input end, and the partition plate is rotatably connected to the rotating shaft.

[0013] According to one aspect of the above technical solution, an adjusting knob is fixedly connected to the outer end of the rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By providing an input end and an output end whose internal pipelines are interconnected on the injection switch, and dividing the input end into a first input port connected to a first microtube and a second input port connected to a second microtube, two microtubes containing different liquid medicines can be connected to the injection switch at the same time. When the liquid medicine needs to be switched, the partition plate is rotated so that any one of the internal pipelines of the first input port or the second input port is connected to the internal pipeline at the output end. This design structure can switch the type of liquid medicine more quickly and avoid spilling of the liquid medicine when switching the liquid medicine.

[0016] When it is necessary to block the output of the medicine liquid, the plug is pressed to block the internal pipeline at the output end. When the plug moves, it will drive the first wedge block to move. When the first wedge block extends into the groove and contacts the second wedge block, the second wedge block will be pushed outward and the second elastic member will be stretched. When the first wedge block completely enters the groove and does not contact the second wedge block, the rebound of the second elastic member will drive the second wedge block to block the rebound of the first wedge block, thereby fixing the plug. When it is necessary to output the medicine liquid again, the second wedge block is pulled so that it no longer blocks the first wedge block. The rebound of the first elastic member will drive the plug and the first wedge block to reset. This design structure can quickly lock the plug into the internal pipeline and more accurately control the output amount of the medicine liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the drug injection device in the embodiment of the utility model;

[0018] Figure 2 for Figure 1 Structural diagram of the middle injection switch;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure at the first wedge block and the second wedge block;

[0020] Figure 4 for Figure 2 Principle cross-section diagram at the center partition;

[0021] Figure 5 Bit Figure 2 Principle cross-section diagram of the middle plug and airbag

[0022] Description of main component symbols:

[0023] Injection switch 10 The first microtube 20 Second microtube 30 Input 11 Output 12 plug 40 Fixed block 41 Airbag 50 Connecting rod 60 First input port 111 Second input port 112 Shaft 113 Adjustment knob 114 First wedge 42 Grooves 44 Second wedge 45 The second elastic member 46 The first elastic member 47 Divider 115 Mouthpiece 51

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 5, shown is a drug injection device in an embodiment of the utility model, characterized in that it includes a drug injection switch 10, and a first microtube 20 and a second microtube 30 connected to the drug injection switch 10, the drug injection switch 10 includes an input end 11 and an output end 12 whose internal pipelines are interconnected, the input end 11 includes a first input port 111 connected to the first microtube 20, and a second input port 112 connected to the second microtube 30, the internal pipeline of the input end 11 is rotatably connected to a partition plate 115, and the partition plate 115 is used to separate the first input port The output end 12 is provided with a plug 40 movable in the internal pipeline of the output end 12, the plug 40 and the output end 12 are connected by an elastic member, a first wedge block 42 is fixedly connected to the plug 40, a fixed block 41 is fixedly connected to the output end 12, a groove 44 is provided in the fixed block 41, a second wedge block 45 matched with the first wedge block 42 is provided in the groove 44, and the second wedge block 45 is connected to the fixed block 41 by a second elastic member 46.

[0029] It can be understood that the present invention provides an input end 11 and an output end 12 whose internal pipelines are interconnected on the injection switch 10, and divides the input end 11 into a first input port 111 connected to the first microtube 20 and a second input port 112 connected to the second microtube 30, so that two microtubes containing different liquid medicines can be connected to the injection switch 10 at the same time. When the liquid medicine needs to be switched, the partition plate 115 is rotated so that any one of the internal pipelines of the first input port 111 or the second input port 112 is connected to the internal pipeline at the output end 12. This design structure can switch the type of liquid medicine more quickly and avoid the situation where the liquid medicine is spilled when switching the liquid medicine.

[0030] When it is necessary to block the output of the liquid medicine, the plug 40 is pressed to block the internal pipeline of the output end 12. When the plug 40 moves, it will drive the first wedge block 42 to move. When the first wedge block 42 extends into the groove 44 and contacts the second wedge block 45, the second wedge block 45 will be pushed outward and the second elastic member 46 will be stretched. When the first wedge block 42 completely enters the groove 44 and does not contact the second wedge block 45, the rebound of the second elastic member 46 will drive the second wedge block 45 to block the rebound of the first wedge block 42, thereby fixing the plug 40. When it is necessary to output the liquid medicine again, the second wedge block 45 is pulled so that it no longer blocks the first wedge block 42. The rebound of the first elastic member 47 will drive the plug 40 and the first wedge block 42 to reset. This design structure can quickly lock the plug 40 into the internal pipeline and more accurately control the output amount of the liquid medicine.

[0031] Furthermore, the input end 11 is provided with an output port for outputting the drug solution.

[0032] It can be understood that the liquid medicine passes through the first microtube 20 or the second microtube 30, the internal pipeline of the input end 11, and the internal pipeline of the output end 12 until it reaches the output port.

[0033] Furthermore, a blowing assembly is provided at the output end 12, and the blowing assembly includes an air bag 50 located on the outer surface of the output end 12, and a nozzle 51 located in the internal pipeline of the output end 12, the air bag 50 is connected to the nozzle 51, and preferably, the nozzle 51 is arranged in the direction of the input end 11.

[0034] It can be understood that in order to completely block the medicine liquid, before plugging the internal pipeline with the plug 40, it is necessary to squeeze the airbag 50 to spray gas from the nozzle 51, so that the medicine liquid that passes the plug 40 can flow back to the internal pipeline of the input end 11. The nozzle 51 is set in the direction of the input end 11, which can better control the flow direction of the gas.

[0035] Furthermore, the plug 40 and the airbag 50 are connected via a connecting rod 60 . Preferably, the plug 40 and the airbag 50 are located in a direction of the output end 12 away from the ground.

[0036] It can be understood that the plug 40 is connected to the airbag 50 by the connecting rod 60. When it is necessary to block the output of the medicine, when the plug 40 is pressed, the airbag 50 will also be squeezed, and the medicine can be blown back to the internal pipeline of the input end 11 while blocking the medicine. It is more convenient. The plug 40 and the airbag 50 are arranged at the direction away from the ground at the output end 12, so that the medicine can be located below the internal pipeline due to gravity, so that the nozzle 51 can better blow the medicine back to the internal pipeline of the input end 11 before the plug 40 completely closes the internal pipeline.

[0037] Furthermore, a rotating shaft 113 is provided at the input end 11 , and the rotating shaft 113 penetrates the internal pipeline of the input end 11 . The partition plate 115 is rotatably connected to the rotating shaft 113 , and an adjusting knob 114 is fixedly connected to the outer end of the rotating shaft 113 .

[0038] It can be understood that when it is necessary to switch the medicine solution, the rotating shaft 113 and the partition plate 115 are driven to rotate by adjusting the knob 114 to better control the movement of the partition plate 115.

[0039] In summary, the drug injection device in the above embodiment of the utility model can simultaneously connect two microtubes filled with different liquid medicines to the drug injection switch by setting an input end and an output end whose internal pipelines are interconnected on the drug injection switch, and dividing the input end into a first input port connected to the first microtube and a second input port connected to the second microtube. When the liquid medicine needs to be switched, the partition plate is rotated so that any one of the internal pipelines of the first input port or the second input port is connected to the internal pipeline at the output end. This design structure can switch the type of liquid medicine more quickly and avoid spilling of the liquid medicine when switching the liquid medicine.

[0040] When it is necessary to block the output of the medicine liquid, the plug is pressed to block the internal pipeline at the output end. When the plug moves, it will drive the first wedge block to move. When the first wedge block extends into the groove and contacts the second wedge block, the second wedge block will be pushed outward and the second elastic member will be stretched. When the first wedge block completely enters the groove and does not contact the second wedge block, the rebound of the second elastic member will drive the second wedge block to block the rebound of the first wedge block, thereby fixing the plug. When it is necessary to output the medicine liquid again, the second wedge block is pulled so that it no longer blocks the first wedge block. The rebound of the first elastic member will drive the plug and the first wedge block to reset. This design structure can quickly lock the plug into the internal pipeline and more accurately control the output amount of the medicine liquid.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A drug injection device, characterized in that: The invention comprises an injection switch, and a first microtube and a second microtube connected to the injection switch, wherein the injection switch comprises an input end and an output end whose internal pipelines are interconnected, wherein the input end comprises a first input port connected to the first microtube, and a second input port connected to the second microtube, wherein the internal pipeline of the input end is rotatably connected to a partition plate, wherein the partition plate is used to separate the pipeline at the first input port from the pipeline at the second input port, wherein a plug movable in the internal pipeline of the output end is provided at the output end, wherein the plug is connected to the output end through an elastic member, wherein a first wedge block is fixedly connected to the plug, wherein a fixed block is fixedly connected to the output end, wherein a groove is provided in the fixed block, wherein a second wedge block matched with the first wedge block is provided in the groove, and wherein the second wedge block is connected to the fixed block through a second elastic member.

2. The drug injection device according to claim 1, characterized in that: The input end is provided with an output port for outputting the liquid medicine.

3. The drug injection device according to claim 1, characterized in that: The output end is also provided with a blowing assembly, which includes an air bag located on the outer surface of the output end and a blowing nozzle located at the internal pipeline of the output end, and the air bag is connected to the blowing nozzle.

4. The drug injection device according to claim 3, characterized in that: The blowing nozzle is arranged toward the direction of the input end.

5. The drug injection device according to claim 3, characterized in that: The plug and the airbag are connected via a connecting rod.

6. The drug injection device according to claim 5, characterized in that: The plug and the air bag are located at the direction of the output end away from the ground.

7. The drug injection device according to claim 1, characterized in that: A rotating shaft is provided at the input end, the rotating shaft penetrates the internal pipeline of the input end, and the partition plate is rotatably connected to the rotating shaft.

8. The drug injection device according to claim 7, characterized in that: The outer end of the rotating shaft is fixedly connected with an adjusting knob.

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