Injection device

Abstract

The utility model discloses an injection device which comprises an injector body, an injection liquid storage container and a foot pressing piston. Wherein the injector body comprises a needle; the injection liquid storage container is used for storing injection liquid, the pedal pressing piston is communicated with a liquid outlet of the injection liquid storage container and a liquid inlet of the injector body through a liquid inlet pipe, the pedal pressing piston is provided with a pedal part, and the pedal part is constructed to enable the injection liquid in the injection liquid storage container to reach the injector body under the pedal of a user. According to the injection device disclosed by the embodiment of the utility model, an experimenter can hold the injector body and step on the pressing piston to complete injection, and the injection device is simple in structure and simple and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the field of biomedicine, in particular to an injection device. Background Art

[0002] When preparing monoclonal antibodies (highly uniform antibodies produced by a single B cell clone that target only a specific antigen epitope), higher concentrations of monoclonal antibodies can be obtained using in vivo animal methods, and animal immunization is essential during the preparation process. Commonly used immunosuppressants mostly use cheap and readily available liquid paraffin oil, but liquid paraffin oil has a high viscosity. When using conventional manual continuous syringes, experimenters rely on hand strength to push, which often causes blisters. In addition, some experimenters have weak strength and cannot push completely to the bottom, resulting in insufficient immunization injection volume. During the immunization process, the force applied after the needle is inserted can easily lead to puncture and displacement, increasing the wound trauma surface, which is not conducive to later recovery.

[0003] Moreover, the animals need to be immunized several times, and the number of animals immunized each time is large. If repeated aspiration and injection operations are used, thousands of injections of liquid paraffin oil are too cumbersome, and mice are prone to escape during the immunization process, which seriously affects the smooth progress of the experiment.

[0004] Therefore, how to design an injection device to solve the problem of blood blisters caused by experimenters using hand-push syringes in the existing technology, making the injection operation labor-saving and reducing the labor intensity of the experimenters, is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide an injection device to solve the problem of blood blisters caused by experimenters using hand-push syringes in the prior art, making the injection operation labor-saving and reducing the labor intensity of the experimenters.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] An injection device comprising:

[0008] The syringe body, including the needle;

[0009] Injection storage container, used for storing injection;

[0010] The foot-operated pressing piston connects the liquid outlet of the injection liquid storage container and the liquid inlet of the syringe body through the liquid inlet tube. The foot-operated pressing piston has a pedal portion, which is configured to enable the injection liquid in the injection liquid storage container to reach the syringe body when the user steps on it.

[0011] Optionally, in the above injection device, stepping on the piston to press the piston comprises:

[0012] A cylinder having a liquid inlet and a liquid outlet, wherein a first one-way valve is provided at the liquid inlet of the cylinder and a second one-way valve is provided at the liquid outlet of the cylinder;

[0013] A piston that is slidably engaged with the cylinder, the piston engaging the cylinder to transport the medium from the liquid inlet to the liquid outlet in a one-way manner;

[0014] an elastic return member, a first end of which is connected to the piston handle of the piston, and a second end of which is connected to an end of the cylinder away from the piston handle;

[0015] The pedal portion is connected to the piston handle.

[0016] Optionally, in the above-mentioned injection device, the liquid inlet tube includes a first liquid inlet tube and a second liquid inlet tube, the first end of the first liquid inlet tube is connected to the injection liquid storage container, and the second end is connected to the liquid inlet of the barrel, the first end of the second liquid inlet tube is connected to the syringe body, and the second end is connected to the liquid outlet of the barrel.

[0017] Optionally, in the above injection device, the first end of the handheld portion is in communication with the first end of the second liquid inlet tube;

[0018] An injection portion, one end of which is connected to the second end of the hand-held portion, an axis of the injection portion is perpendicular to an axis of the hand-held portion, and the hand-held portion and the injection portion have a cavity for accommodating injection liquid;

[0019] The needle is detachably connected to the other end of the injection part, and the axis of the needle is in a straight line with the axis of the injection part.

[0020] Optionally, the above injection device further includes an operating table for placing the animal to be immunized, the injection liquid storage container is hung on the operating table, the foot-operated pressing piston is set at the bottom of the operating table, and the liquid inlet pipe is fixed to the operating table.

[0021] Optionally, in the above injection device, the operating console includes:

[0022] The operating table body includes an operating table frame and an operating box arranged on the top of the operating table frame. The operating table frame is provided with a base partition and walking wheels, and a foot-operated pressing piston is provided on the base partition;

[0023] The fixed frame is connected to the operating table body.

[0024] Optionally, in the above injection device, the operation box includes a cavity for placing the animal to be immunized and a drawer partition for opening the cavity, the operation box is provided with a delivery hole connected to the cavity, and a handle is provided on the drawer partition.

[0025] Optionally, in the above injection device, a syringe placement stand is provided on the operation box, and the syringe placement stand includes a needle seat for inserting the needle and a support frame for supporting the syringe body.

[0026] Optionally, in the above injection device, the operation box is provided with a temporary storage box.

[0027] Optionally, in the above injection device, the injection liquid is liquid paraffin oil.

[0028] The injection device disclosed in the embodiment of the utility model includes a syringe body, an injection liquid storage container and a foot-operated pressing piston. When injection is required, the experimenter can hold the syringe body, step on the foot-operated pressing piston to expel air, adjust the liquid amount of the injection liquid in the injection liquid storage container, and then insert the needle of the syringe body into the abdominal cavity of the animal to be immunized. The injection liquid in the injection liquid storage container reaches the syringe body through the liquid inlet tube and the foot-operated pressing piston, enters the body of the animal to be immunized, and completes the injection.

[0029] The injection device disclosed in the embodiment of the utility model only requires the operator to hold the syringe body in hand. The provision of a foot pedal allows the experimenter to complete the injection of the animal to be immunized by simply stepping on it. Compared with the prior art, the continuous injection of the injection solution can be controlled, avoiding the wear and tear on the experimenter's hands caused by long-term manual pressure on the syringe, making the injection operation more labor-saving and reducing the labor intensity of the experimenter. The injection device disclosed in the embodiment of the utility model has a simple structure, is easy to manufacture, is simple to operate, has high safety, and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic structural diagram of the injection device disclosed in an embodiment of the present utility model.

[0032] Figure 1 The meanings of the reference numerals in the figure are as follows:

[0033] 101 is the syringe body, 1011 is the needle, 1012 is the injection part, 1013 is the hand-held part, 102 is the operating table body, 103 is the fixing frame, 104 is the injection liquid storage container, 105 is the foot-operated pressing piston, 106 is the liquid inlet pipe, 1061 is the first liquid inlet pipe, 1062 is the second liquid inlet pipe, 107 is the first one-way valve, 108 is the pull-out partition, 109 is the injection hole, 110 is the temporary storage box, 111 is the hook, 112 is the U-shaped fixing ring, 113 is the syringe placement rack, 114 is the walking wheel, 115 is the fixing part, 116 is the handle, 117 is the operating table frame, 118 is the operating box, 119 is the base partition, and 120 is the second one-way valve. DETAILED DESCRIPTION

[0034] The core of the utility model is to provide an injection device, which can solve the problem of blood blisters caused by experimenters using hand-push syringes in the prior art, making the injection operation labor-saving and reducing the labor intensity of the experimenters.

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1 As shown, an embodiment of the present utility model discloses an injection device, including a syringe body 101 , an injection liquid storage container 104 and a foot-operated pressing piston 105 .

[0037] The present invention is described by taking animal immunization in the monoclonal antibody process as an example, and the injection liquid is liquid paraffin oil, but the present invention is not limited to this scenario.

[0038] Among them, the syringe body 101 includes a needle 1011, and the needle 1011 is used to be inserted into the body of the immunized animal. The injection liquid storage container 104 is used to store the injection liquid, and the injection liquid capacity is specifically set according to the injection requirements. In a specific embodiment of the present invention, the injection liquid storage container 104 is provided with a closable vent, which is not shown in the figure. It should be noted that the internal piping and connecting parts of the syringe body 101 (mainly referring to the part that directly contacts the liquid paraffin oil) are mostly made of polypropylene. This material meets the storage requirements of the liquid paraffin oil and is easy to clean. Of course, other materials can also be used if there are special requirements.

[0039] The injection liquid storage container 104 is used to store the injection liquid. The injection liquid storage container 104 is connected to the syringe body 101 through the liquid inlet tube 106. It should be noted that the liquid inlet tube 106 is sealed to the injection liquid storage container 104 and the syringe body 101, and can be sealed using a sealing ring.

[0040] The foot-operated pressing piston 105 connects the liquid outlet of the injection liquid storage container 104 and the liquid inlet of the syringe body 101 through the liquid inlet tube 106. That is, the injection liquid flows from the injection liquid storage container 104 along the liquid inlet tube 106 through the foot-operated pressing piston 105 to the syringe body 101. The foot-operated pressing piston 105 has a pedal portion, and by stepping on the pedal portion, the injection liquid can be transferred from the injection liquid storage container 104 to the syringe body 101 through the liquid inlet tube. In other words, the foot-operated pressing piston 105 is used to provide the power for the injection liquid to reach the needle from the injection liquid storage container 104. It should be noted that the foot can be used for the left or right foot, and can be set and selected according to the needs of the experimenter.

[0041] The injection device disclosed in the embodiment of the present utility model is that when injection is needed, the experimenter can hold the syringe body 101, step on the foot pedal, and repeatedly step on the foot to press the piston 105 to expel the air, adjust the liquid amount of the injection liquid in the injection liquid storage container 104, and then insert the needle of the syringe body 101 into the abdominal cavity of the animal to be immunized. The experimenter repeatedly steps on the foot to press the piston 105, so that the injection liquid in the injection liquid storage container 104 reaches the syringe body 101 through the liquid inlet tube 106 and the foot pressing piston 105, and enters the body of the animal to be immunized.

[0042] The injection device disclosed in the embodiment of the present utility model has a simple structure, is easy to manufacture, and is easy to operate. The foot-pressing piston 105 can allow the injection liquid to enter the syringe body 101 under the experimenter's foot, and the continuous injection of the injection liquid can be flexibly controlled. The injection volume control performance is good, and the wear and tear on the experimenter's hands caused by the hand-pressed syringe in the prior art is avoided, the labor intensity is greatly reduced, and the operation is practical and convenient. The injection device disclosed in the embodiment of the present utility model has a simple structure, is easy to manufacture, and is low in cost.

[0043] The injection device disclosed in the embodiment of the present invention, the foot-operated pressing piston 105 includes a cylinder, a piston, and an elastic reset member. The cylinder has a liquid inlet and a liquid outlet, and the liquid inlet of the cylinder is provided with a first one-way valve 107. The flow direction of the first one-way valve 107 is that the injection liquid flows from the injection liquid storage container 104 to the foot-operated pressing piston 105, that is, the injection liquid can only flow into the foot-operated pressing piston 105 through the first one-way valve 107 and cannot flow out. The liquid outlet of the cylinder is provided with a second one-way valve 120. The flow direction of the second one-way valve 120 is that the injection liquid flows from the foot-operated pressing piston 105 to the syringe body 101, that is, the injection liquid can only flow into the foot-operated pressing piston 105 through the second one-way valve 120. The piston and the cylinder are slidably matched, the first end of the elastic reset member is connected to the piston handle of the piston, and the second end is connected to the end of the cylinder away from the piston handle, and the foot-operated part is connected to the piston handle. In a specific embodiment of the present invention, it further comprises a shell, in which the cylinder, the piston and the elastic reset member are all placed.

[0044] During the injection, the experimenter steps on the pedal to push the piston to slide along the cylinder. The injection liquid in the cylinder flows out from the liquid outlet of the cylinder and enters the syringe body 101 through the liquid inlet tube 106. After the experimenter releases the foot, the piston resets under the action of the elastic reset member. This is the liquid aspiration process, and the injection liquid flows into the cylinder from the liquid inlet of the cylinder. The experimenter repeatedly steps on the foot to press the piston 105, continuously aspirating and discharging the liquid to complete the injection. The injection device disclosed in the embodiment of the utility model has a simple structure, is easy to process, and is convenient to operate.

[0045] Based on the above embodiment, the liquid inlet tube 106 includes a first liquid inlet tube 1061 and a second liquid inlet tube 1062. The first end of the first liquid inlet tube 1061 is connected to the injection liquid storage container 104, and the second end is connected to the liquid inlet of the barrel. The first end of the second liquid inlet tube 1062 is connected to the syringe body 101, and the second end is connected to the liquid outlet of the barrel.

[0046] In a specific embodiment of the present invention, the syringe body includes a handheld portion 1013, an injection portion 1012 and a needle 1011. The handheld portion 1013 and the injection portion 1012 have a cavity for accommodating injection liquid. The first end of the second liquid inlet tube 1062 is connected to the first end of the handheld portion 1013. One end of the injection portion 1012 is connected to the second end of the handheld portion 1013, and the axis of the injection portion 1012 is perpendicular to the axis of the handheld portion 1013. The needle 1011 is detachably connected to the other end of the injection portion 1012. Specifically, the needle 1011 is provided with an external thread, and the front end of the injection portion 1012 is provided with an internal thread. The needle 1011 and the injection portion 1012 are threadedly matched. The threaded matching can effectively prevent flying needles. The needle 1011 can also be connected to the injection portion 1012 by plugging, preferably by threaded connection. The axis of the needle 1011 is in a straight line with the axis of the injection part 1012. The needle 1011, the injection part 1012 and the hand-held part 1013 together form a structure similar to a gun. When injection is required, the experimenter holds the hand-held part 1013 with his hand, inserts the needle 1011 into the body of the animal to be immunized, and injects. This design makes it convenient for the experimenter to hold the syringe body 101, and this design is more labor-saving.

[0047] The injection device disclosed in the embodiment of the present utility model further includes an operating table, which is used to place the animal to be immunized. In order to prevent air from entering the injection liquid storage container 104, the injection liquid storage container 104 is suspended on the top of the operating table, and the foot-operated pressing piston 105 is set at the bottom of the operating table, which is convenient for the experimenter to step on the foot pedal. The injection liquid storage container 104 is hung at a high place, and the injection liquid can fill the first liquid inlet pipe 1061 under the action of gravity, reducing the air in the liquid inlet pipe 106. At the same time, the injection liquid storage container 104 is hung at a high place to facilitate observation of the liquid amount of the remaining injection liquid. In order to prevent the liquid inlet pipe 106 from shaking, the liquid inlet pipe 106 is fixed on the operating table. Specifically, the liquid inlet pipe 106 is fixed by a fixing member 115.

[0048] On the basis of the above embodiment, the operating table includes an operating table body 102 and a fixed frame 103, wherein the operating table body 102 includes an operating table frame body 117 and an operating box 118 arranged on the top of the operating table frame body 117, the operating table frame body 117 is provided with a base partition 119 and a running wheel 114, and the foot-operated pressing piston 105 is arranged on the base partition 119. The fixed frame 103 is connected to the operating table body 102, and the injection liquid storage container 104 is suspended from the fixed frame 103. Specifically, the top of the fixed frame 108 is provided with a hook 111 and an auxiliary U-shaped fixing ring 112 (two in number as shown in the figure) for fixing the injection liquid storage container 104. This hanging method is simple and convenient. In a specific embodiment of the present invention, the fixed frame 103 and the operating table body 102 are an integrated structure. The setting of the running wheel 114 facilitates the movement of the operating table. The running wheel 114 is a universal wheel, and the number shown in the figure is 4. In order to facilitate stopping and fixing at any time, a brake device is provided on at least one running wheel 114. The base partition 119 can be a common partition or an L-shaped partition. The foot-pressing piston 105 can be set at any position of the base partition 119 according to the needs of the experimenter.

[0049] For ease of operation, based on the above embodiment, the operation box 118 includes a cavity for placing the animal to be immunized and a pull-out partition 108 for opening the cavity. The operation box 118 is provided with a delivery hole 109 communicating with the cavity. To facilitate opening the pull-out partition 108, the pull-out partition 108 is provided with a handle 116. In specific use, the device is moved to a corresponding position in the experimental operation area and fixed, the pull-out partition 108 is opened, an empty cage is first placed in the cavity directly below the delivery hole 109, and then the animal to be immunized is placed on the pull-out partition 108. The injection liquid storage container 104, the liquid inlet tube 106, the foot-operated pressing piston 105 and the syringe body 101 are connected, the air in the pipeline is emptied, and the injection liquid volume is adjusted. Then, the experimenter can sit and perform the experimental operation, hold the continuous syringe body 101, and completely insert the needle tip of the needle 1011 into the abdominal cavity of the animal to be immunized. The foot-operated pressing piston 105 is repeatedly stepped on to complete the injection. The immunized animals are temporarily placed in an empty cage through the injection hole 109 to prevent them from escaping. The injection device disclosed in the embodiment of the utility model is easy and convenient to operate, with high accuracy, and avoids hand strain and arm pain caused by long-term weight lifting by the experimenter.

[0050] To prevent the syringe body 101 from being placed in a manner that could injure personnel and contaminate the medication when the syringe body 101 is not in use, a syringe holder 113 is provided on the operating box 118 in one embodiment of the present invention. The syringe holder 113 includes a needle seat for inserting a needle and a support frame for supporting the syringe body 101. The needle seat is cylindrical and has a needle hole corresponding to the needle to facilitate needle insertion. The support frame is semicircular in shape, and the shape of the arc corresponds to the shape of the injection portion 1012.

[0051] To facilitate the placement of consumables and ensure the overall neatness of the experimental process, a temporary storage box 110 is provided on the operation box 118. Consumables used during the injection process can be placed in the temporary storage box 110 and sterilized and recycled after the injection process is completed. It should be noted that the consumables that come into contact with the entire liquid paraffin oil immunization process can be sterilized, disinfected, and recycled.

[0052] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0053] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0054] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0055] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An injection device, characterized in that include: A syringe body (101), including a needle (1011); An injection liquid storage container (104), used for storing the injection liquid; A foot-operated pressing piston (105) is used to connect the liquid outlet of the injection liquid storage container (104) and the liquid inlet of the syringe body (101) via a liquid inlet pipe (106). The foot-operated pressing piston (105) has a pedal portion, and the pedal portion is configured to enable the injection liquid in the injection liquid storage container (104) to reach the syringe body (101) when the user steps on the pedal.

2. The injection device according to claim 1, wherein The foot-operated pressing piston (105) comprises: A cylinder having a liquid inlet and a liquid outlet, wherein a first one-way valve (107) is provided at the liquid inlet of the cylinder, and a second one-way valve (120) is provided at the liquid outlet of the cylinder; a piston slidably engaged with the cylinder, the piston engaging with the cylinder to transport the medium from the liquid inlet to the liquid outlet in a unidirectional manner; an elastic return member, a first end of which is connected to the piston handle of the piston, and a second end of which is connected to an end of the cylinder away from the piston handle; The pedal portion is connected to the piston handle.

3. The injection device according to claim 2, wherein The liquid inlet tube (106) includes a first liquid inlet tube (1061) and a second liquid inlet tube (1062), wherein the first end of the first liquid inlet tube (1061) is connected to the injection liquid storage container (104), and the second end is connected to the liquid inlet of the barrel; the first end of the second liquid inlet tube (1062) is connected to the syringe body (101), and the second end is connected to the liquid outlet of the barrel.

4. The injection device according to claim 3, wherein The syringe body (101) comprises: A handheld portion (1013), a first end of which is in communication with a first end of the second liquid inlet pipe (1062); An injection portion (1012), one end of which is connected to the second end of the handheld portion (1013), an axis of the injection portion (1012) is perpendicular to an axis of the handheld portion (1013), and the handheld portion (1013) and the injection portion (1012) have a cavity for accommodating injection liquid; The needle (1011) is detachably connected to the other end of the injection part (1012), and the axis of the needle (1011) and the axis of the injection part (1012) are in a straight line.

5. The injection device according to claim 4, wherein It also includes an operating table for placing the animal to be immunized, the injection liquid storage container (104) is hung on the operating table, the foot-operated pressing piston (105) is set at the bottom of the operating table, and the liquid inlet pipe (106) is fixed to the operating table.

6. The injection device according to claim 5, wherein The operating console includes: The operating table body (102) includes an operating table frame (117) and an operating box (118) arranged on the top of the operating table frame (117); the operating table frame (117) is provided with a base partition (119) and walking wheels (114); the foot-operated pressing piston (105) is arranged on the base partition (119); A fixing frame (103), the injection liquid storage container (104) is hung on the fixing frame (103), and the fixing frame (103) is connected to the operating table body (102).

7. The injection device according to claim 6, wherein The operation box (118) includes a cavity for placing the animal to be immunized and a drawer partition (108) for opening the cavity. The operation box (118) is provided with a delivery hole (109) connected to the cavity, and a handle (116) is provided on the drawer partition (108).

8. The injection device according to claim 6, wherein The operating box (118) is provided with a syringe placement stand (113), and the syringe placement stand (113) comprises a needle seat for inserting the needle and a support stand for supporting the syringe body (101).

9. The injection device according to claim 7, wherein: The operation box (118) is provided with a temporary storage box (110).

10. The injection device according to any one of claims 1 to 9, characterized in that The injection solution is liquid paraffin oil.

Images