Double-cylinder type injector

Abstract

The double-cylinder injector comprises a first needle cylinder, a second needle cylinder and an adjusting device, an infusion opening is formed in the lower end of the first needle cylinder, a first liquid storage cylinder is arranged at the upper end of the first needle cylinder, a first piston rod is arranged in the first needle cylinder in a sliding mode from top to bottom, a cavity is formed in the bottom end of the first needle cylinder, and the upper end of the cavity is communicated with the first liquid storage cylinder; the lower end is communicated with the infusion port; the second needle cylinder is fixedly connected with the first needle cylinder, a second liquid storage cylinder is arranged at the upper end of the second needle cylinder, a second piston rod is slidably arranged in the second liquid storage cylinder from top to bottom, the capacity of the second piston rod is smaller than that of the first liquid storage cylinder, and the lower bottom surface of the second liquid storage cylinder is communicated with the cavity; the adjusting device is arranged in the cavity, and the liquid conveying opening, the first liquid storage cylinder and the second liquid storage cylinder are adjusted to be communicated pairwise. When two different medicaments need to be compatible in vitro in medical treatment and the dosages of the two medicaments cannot be measured by using the same injection, two injections do not need to be respectively used, so that the steps can be simplified, and the medicaments can be directly mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a double-barrel syringe. Background Art

[0002] When one drug is ineffective, it is necessary to select other drugs for reasonable combination or to combine two effective drugs together to achieve the effect of 1+1>2. Combination refers to the selective use of two or more drugs together according to the needs of the disease and the characteristics of the medicine.

[0003] However, sometimes when the dosage of the combined drugs cannot be measured using the same injection, two syringes are needed to draw them separately, and then inconvenient mixing is required, making the combination process cumbersome. Utility Model Content

[0004] The utility model aims to provide a double-barreled syringe. When two different medicines need to be mixed in vitro in medical treatment and the dosages of the two medicines cannot be measured using the same injection, there is no need to use two injections respectively, so the steps can be simplified and the medicine mixing operation can be directly performed.

[0005] To achieve the above object, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A double-barrel syringe, comprising:

[0007] A first syringe, whose lower end is an infusion port, and whose upper end is provided with a first liquid storage cylinder, in which a first piston rod is slidably arranged from top to bottom, and a cavity is provided at the bottom end of the first syringe, wherein the upper end of the cavity is connected with the first liquid storage cylinder, and the lower end of the cavity is connected with the infusion port;

[0008] The second syringe is fixedly connected to the first syringe, and a second liquid storage cylinder is provided at the upper end thereof. A second piston rod is slidably arranged from top to bottom in the second liquid storage cylinder, and the capacity of the second liquid storage cylinder is smaller than that of the first liquid storage cylinder. The lower bottom surface of the second liquid storage cylinder is connected to the cavity;

[0009] The regulating device is arranged in the cavity, and regulates and enables the infusion port, the first liquid storage cylinder and the second liquid storage cylinder to be connected in pairs.

[0010] As a preferred solution of the double-barrel syringe described in the utility model, the adjusting device is a three-way joint, which includes a three-way body and a valve core. The top surface of the three-way body is provided with an inner groove, which is fixedly arranged in the cavity. The first syringe is provided with a first through groove connected to the cavity. One end of the valve core is rotatably arranged in the inner groove of the three-way body, and the other end passes through the first through groove and extends outward.

[0011] As a preferred solution of the double-barrel syringe described in the utility model, three infusion tubes are arranged on the outside of the three-way body, whose outer ends are respectively connected to the infusion port, the first liquid storage cylinder and the second liquid storage cylinder, and the inner ends of the three infusion tubes are connected to the inner groove.

[0012] As a preferred solution of the double-barreled syringe described in the utility model, the valve core is located in the inner groove and has three interconnected connection ports, and a rotating handle is provided at the end located outside the cavity.

[0013] As a preferred solution of the double-barreled syringe described in the utility model, the rotating handle is in a "T" shape, and the directions of its sides are consistent with the three connecting ports on the valve core.

[0014] As a preferred embodiment of the double-barrel syringe described in the utility model, it also includes a pressing plate, which is arranged on the upper end surfaces of the first syringe and the second syringe, and its two opposite ends extend outward and are provided with a second through groove opposite to the first liquid storage barrel and the second liquid storage barrel.

[0015] Compared with the prior art, the utility model has the following advantages: when two different drugs need to be mixed in vitro in medical treatment, and the dosage of the two drugs cannot be measured using the same injection, there is no need to use two injections separately, which can simplify the steps and directly perform the mixing operation of the drugs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a double-barreled syringe of the utility model;

[0017] Figure 2 It is an exploded view of the components of a double-barreled syringe of the utility model;

[0018] Figure 3 It is a partial cross-sectional view of a double-barreled syringe of the utility model;

[0019] In the figure: 100-first syringe, 110-infusion port, 120-first liquid storage cylinder, 130-first piston rod, 140-cavity, 150-first through groove, 200-second syringe, 210-second liquid storage cylinder, 220-second piston rod, 300-adjusting device, 310-three-way body, 311-inner groove, 312-infusion tube, 320-valve core, 321-connecting port, 322-rotating handle, 400-pressing plate. DETAILED DESCRIPTION

[0020] 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.

[0021] The utility model provides a double-barrel syringe. When two different medicines need to be mixed in vitro in medical treatment and the dosages of the two medicines cannot be measured using the same injection, there is no need to use two injections respectively, so the steps can be simplified and the medicine mixing operation can be directly performed.

[0022] Figure 1-Figure 3 The utility model is a double-barrel syringe of an embodiment, please refer to Figure 1-Figure 3 In this embodiment, a double-barreled syringe has a main body including a first syringe 100 , a second syringe 200 and an adjusting device 300 .

[0023] The lower end of the first syringe 100 is an infusion port 110, and the upper end is provided with a first liquid storage cylinder 120. A first piston rod 130 is slidably arranged from top to bottom in the first syringe 100. A cavity 140 is provided at the bottom end of the first syringe 100. The upper end of the cavity 140 is connected to the first liquid storage cylinder 120, and the lower end is connected to the infusion port 110. The first syringe 100 is provided with a first through groove 150 connected to the cavity 140.

[0024] The second syringe 200 is fixedly connected to the first syringe 100 , and a second liquid storage cylinder 210 is opened at its upper end. A second piston rod 220 is slidably arranged from top to bottom in the second liquid storage cylinder 210 , and its capacity is smaller than that of the first liquid storage cylinder 120 . The lower bottom surface of the second liquid storage cylinder 210 is connected to the cavity 140 .

[0025] The regulating device 300 is a three-way joint, which includes a three-way body 310 and a valve core 320. The three-way body 310 has an inner groove 311 on the top surface, which is fixedly arranged in the cavity 140. The three-way body 310 is provided with three infusion tubes 312 whose outer ends are respectively connected to the infusion port 110, the first liquid storage cylinder 120 and the second liquid storage cylinder 210. The inner ends of the three infusion tubes 312 are connected to the inner groove 311, and the three are arranged at right angles in sequence; the valve core 320 is provided with an inner groove 311 on the top surface of the three-way body 310, which is fixedly arranged in the cavity 140. The lower end of the core 320 is rotatably set in the inner groove 311 of the three-way body 310, and the upper end extends outward after passing through the first through groove 150. Three interconnected connecting ports 321 are opened on the end of the valve core 320 located in the inner groove 311. The three connecting ports 321 are at right angles in sequence. A rotating handle 322 is set at the end of the valve core 320 located outside the cavity. The rotating handle 322 is in a "T" shape, and the directions of its sides are consistent with the three connecting ports 321 on the valve core 320.

[0026] Furthermore, it includes a pressing plate 400, which is arranged on the upper end surfaces of the first syringe 100 and the second syringe 200, with its two opposite ends extending outward and a second through groove opposite to the first liquid storage cylinder 120 and the second liquid storage cylinder 210, so as to facilitate the extraction and infusion operations.

[0027] Combination Figure 1-Figure 3 The double-barreled syringe of this embodiment is specifically implemented as follows: when performing in vitro preparation, the injection needle is installed at the infusion port 110, and the rotating handle 322 is rotated to connect the infusion tube of the opposite infusion port 110 and the first liquid storage cylinder 120 through the valve core 320. At this time, the first piston rod 130 is pulled up to extract the first medicine. After the extraction is completed, the gas in the first liquid storage cylinder 120 is discharged, and the rotating handle 322 is rotated to connect the opposite infusion port 110 through the valve core 320. The liquid port 110 is connected to the infusion tube of the second liquid storage cylinder 210. At this time, the second piston rod 220 is pulled up to extract the second medicine. After the extraction is completed, the gas in the second liquid storage cylinder 210 is discharged. When the medicine needs to be mixed, the rotating handle 322 is rotated to connect the infusion tubes of the first liquid storage cylinder 120 and the second liquid storage cylinder 210 through the valve core 320, and the first piston rod 130 is pulled outward to draw the medicine in the second liquid storage cylinder 210 into the first liquid storage cylinder 120.

[0028] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although 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 double-barreled syringe, characterized in that: include: A first syringe (100), the lower end of which is an infusion port (110), and the upper end of which is provided with a first liquid storage cylinder (120); a first piston rod (130) is slidably arranged from top to bottom in the first syringe (100); a cavity (140) is provided at the bottom end of the first syringe (100); the upper end of the cavity (140) is communicated with the first liquid storage cylinder (120), and the lower end is communicated with the infusion port (110); The second syringe (200) is fixedly connected to the first syringe (100), and a second liquid storage cylinder (210) is provided at the upper end thereof. A second piston rod (220) is slidably arranged from top to bottom in the second liquid storage cylinder (210), and the capacity of the second liquid storage cylinder (220) is smaller than that of the first liquid storage cylinder (120). The lower bottom surface of the second liquid storage cylinder (210) is in communication with the cavity (140); The regulating device (300) is disposed in the cavity (140) and regulates and enables the infusion port (110), the first liquid storage cylinder (120), and the second liquid storage cylinder (210) to communicate with each other.

2. A double-barreled syringe according to claim 1, characterized in that: The regulating device (300) is a three-way joint, comprising a three-way body (310) and a valve core (320); an inner groove (311) is provided on the top surface of the three-way body (310) and is fixedly arranged in the cavity (140); a first through groove (150) is provided on the first syringe (100) and is communicated with the cavity (140); one end of the valve core (320) is rotatably arranged in the inner groove (311) of the three-way body (310), and the other end of the valve core (320) passes through the first through groove (150) and then extends outward.

3. A double-barreled syringe according to claim 2, characterized in that: Three infusion tubes (312) are arranged outside the three-way body (310), the outer ends of which are respectively connected to the infusion port (110), the first liquid storage cylinder (120) and the second liquid storage cylinder (210), and the inner ends of the three infusion tubes (312) are connected to the inner groove (311).

4. A double-barreled syringe according to claim 3, characterized in that: The end of the valve core (320) located in the inner groove (311) is provided with three interconnected connection ports (321), and a rotating handle (322) is provided at the end located outside the cavity.

5. A double-barreled syringe according to claim 4, characterized in that: The rotating handle (322) is in a "T" shape, and the directions of its sides are consistent with the three connecting ports (321) on the valve core (320).

6. A double-barreled syringe according to claim 1, characterized in that: The device also includes a pressing plate (400), which is arranged on the upper end surfaces of the first syringe (100) and the second syringe (200), with two opposite ends extending outward and a second through groove opposite to the first liquid storage cylinder (120) and the second liquid storage cylinder (210) being provided.

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