Injector for intravenous injection

Abstract

The injector comprises a needle tube, an injection head is fixedly connected to the lower end of the needle tube, a push block is movably connected into the needle tube, a push rod is fixedly connected to the middle of the upper surface of the push block, connecting plates are fixedly connected to the periphery of the surface of the push rod, and a push plate is fixedly connected to the upper surface of the push rod. By means of the design of the needle tube, the injection head, the push block, the connecting plate, the push rod and the auxiliary assembly, during use, the position of the auxiliary assembly is adjusted, after the position is adjusted, the push plate is pushed, the push rod, the connecting plate and the push block move in the needle tube, and meanwhile the injection amount is controlled. When the auxiliary assembly moves forwards, the auxiliary assembly moves forwards, when a stop rod in the auxiliary assembly makes contact with a baffle, a push plate stops being pushed, the stop rod makes contact with different baffles at different positions, and the effect that the injection amount of liquid medicine in the injector is conveniently controlled is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical tools, in particular to a syringe for intravenous injection. Background Art

[0002] Syringes are a commonly used medical tool in hospitals. They are usually divided into disposable syringes and reusable syringes. Reusable syringes are mainly used to extract and mix various drugs. Their needles are generally made of fiberglass or medical stainless steel. In order to extract different drugs, different drugs are usually extracted using different types of syringes to prevent mutual contamination between different drugs.

[0003] To this end, an intravenous syringe with announcement number CN211634665U belongs to the field of medical tool technology. The key points of its technical solution are that it includes a needle tube, a needle and a piston syringe arranged inside the needle tube, a control console body is fixed on the circumferential surface of the needle tube, a display screen is fixed on the end face of the control console body, a control module for display control of the display screen is arranged inside the control console body, and a TYPC interface for communicating with the control module is opened on the side surface of the control console body; it solves the problem that when existing intravenous syringes of different specifications and types are placed together, it is difficult for medical staff to distinguish different syringes and it is inconvenient to use; an intravenous syringe is provided with a display screen, and information is displayed through the display screen, which is convenient for medical staff to distinguish and identify intravenous syringes.

[0004] The problem with the prior art is that when performing intravenous injections, it is often necessary to control the amount of injection to prevent the patient's body from being affected by too much or too little injection at one time. However, traditional syringes do not have the function of avoiding such situations, so problems can easily occur. Therefore, we propose a syringe for intravenous injection. Utility Model Content

[0005] The purpose of the utility model is to provide a syringe for intravenous injection to solve the problems raised in the above background technology.

[0006] The utility model is implemented as follows: a syringe for intravenous injection comprises a needle tube, an injection head is fixedly connected to the lower end of the needle tube, a push block is movably connected inside the needle tube, a push rod is fixedly connected to the middle of the upper surface of the push block, connecting plates are fixedly connected to the surface of the push rod all around, a push plate is fixedly connected to the upper surface of the push rod, and the push rod and the needle tube surface are both provided with auxiliary components, and the auxiliary components are used to control the injection amount.

[0007] As a preferred embodiment of the present invention, the auxiliary component comprises a fixing ring, the fixing ring is fixedly connected to one end of the push rod surface, and auxiliary plates are fixedly connected to the surface of the fixing ring all around.

[0008] As a preferred embodiment of the utility model, four groups of mounting rods are fixedly connected to the upper surface of the fixing ring, and the upper ends of the four groups of mounting rods are commonly fixedly connected to movable sleeves.

[0009] As a preferred embodiment of the utility model, the movable sleeve surface is movably connected with two groups of clamping plates, one side of the surface of one group of clamping plates is fixedly connected to a first fixing plate, and one end of one side of the surface of the first fixing plate is fixedly connected to a rotating shaft.

[0010] As a preferred embodiment of the utility model, a screw rod is fixedly connected to one side of the rotating shaft, a limiting rod is fixedly connected to the other end of one side of the surface of the first fixed plate, a second fixed plate is commonly provided on the surface of the screw rod and the limiting rod, the second fixed plate is fixedly connected to the surface of another group of clamping plates, and a rotating block is fixedly connected to one end of the screw rod.

[0011] As a preferred embodiment of the utility model, one side of the surface of one group of the clamping plates is fixedly connected to a connecting shell, one side of the inner wall of the connecting shell is fixedly connected to a spring pull rod, and the piston end of the spring pull rod is fixedly connected to a fixing block.

[0012] As a preferred embodiment of the utility model, a baffle rod is fixedly connected to one side of the surface of the fixed block, and four groups of baffle plates corresponding to the baffle rod are fixedly connected to the surface of the needle tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is designed with a needle tube, an injection head, a push block, a connecting plate, a push rod and an auxiliary component. When in use, the position of the auxiliary component is adjusted. When the position is adjusted, the push plate is pushed. When the push rod, the connecting plate and the push block move in the needle tube, the auxiliary component will also move forward. When the baffle rod in the auxiliary component contacts the baffle plate, the push plate will stop being pushed. The baffle rod will contact different baffle plates at different positions, thereby achieving the effect of facilitating the control of the injection volume of the medicine in the syringe.

[0015] 2. The utility model adopts the design of the auxiliary plate, the first fixed plate, the clamping plate, the movable sleeve, the mounting rod, the fixing ring, the rotating shaft, the screw rod, the second fixed plate, the rotating block and the limiting rod. The two groups of clamping plates can move on the surface of the movable sleeve. When they move to the appropriate position, the rotating block is rotated, and the rotating block drives the screw rod to rotate using the rotating shaft, so that the second fixed plate drives one group of clamping plates to approach the other group of clamping plates and clamp them on the surface of the movable sleeve, thereby completing the position adjustment and fixation of the baffle rod. The baffle rod can be close to the auxiliary plate to prevent the position adjustment of the baffle rod from deviating, thereby achieving the effect of making the use of the syringe more convenient and accurate.

[0016] 3. The utility model adopts the design of the baffle rod, the fixing block, the spring pull rod, the connecting shell and the baffle plate. When the position of the baffle rod is adjusted, the spring pull rod is used to pull the baffle rod outward. When the position adjustment is completed, the hand is released and the spring pull rod will pull the baffle rod to automatically reset, thereby achieving the effect of effectively preventing the baffle rod from getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the auxiliary component structure provided by an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the partial structure of the auxiliary component provided in the embodiment of the utility model.

[0020] In the figure: 1. needle tube; 2. injection head; 3. push block; 4. connecting plate; 5. push rod; 6. auxiliary component; 601. stop rod; 602. fixed block; 603. spring pull rod; 604. connecting shell; 605. auxiliary plate; 606. first fixed plate; 607. clamping plate; 608. movable sleeve; 609. mounting rod; 610. fixing ring; 611. rotating shaft; 612. screw rod; 613. second fixed plate; 614. rotating block; 615. limiting rod; 616. baffle plate; 7. push plate. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, an intravenous injection syringe provided by an embodiment of the utility model includes a needle tube 1, an injection head 2 is fixedly connected to the lower end of the needle tube 1, a push block 3 is movably connected inside the needle tube 1, a push rod 5 is fixedly connected to the middle of the upper surface of the push block 3, connecting plates 4 are fixedly connected to the surface of the push rod 5 all around, a push plate 7 is fixedly connected to the upper surface of the push rod 5, and an auxiliary component 6 is commonly provided on the push rod 5 and the surface of the needle tube 1, and the auxiliary component 6 is used to control the injection amount.

[0024] The above scheme is adopted: through the design of the needle tube 1, injection head 2, push block 3, connecting plate 4, push rod 5 and auxiliary component 6, when in use, the position of the auxiliary component 6 is adjusted. When the position is adjusted, the push plate 7 is pushed. While the push rod 5, connecting plate 4 and push block 3 move in the needle tube 1, the auxiliary component 6 will also move forward. When the baffle rod 601 in the auxiliary component 6 contacts the baffle plate 616, the push plate 7 will stop being pushed. The baffle rod 601 will contact different baffle plates 616 at different positions, thereby achieving the effect of facilitating the control of the injection amount of the medicine in the syringe.

[0025] refer to Figure 2 and Figure 3 The auxiliary component 6 includes a fixing ring 610, which is fixedly connected to one end of the surface of the push rod 5, and the surface of the fixing ring 610 is fixedly connected with auxiliary plates 605 all around; four groups of mounting rods 609 are fixedly connected to the upper surface of the fixing ring 610, and the upper ends of the four groups of mounting rods 609 are commonly fixedly connected to a movable sleeve 608; two groups of clamping plates 607 are movably connected to the surface of the movable sleeve 608, one side of the surface of one group of clamping plates 607 is fixedly connected to the first fixing plate 606, and one end of the surface of one side of the first fixing plate 606 is fixedly connected to the rotating shaft 611; one side of the rotating shaft 611 is fixedly connected to a screw rod 612, and the other end of the surface of one side of the first fixing plate 606 is fixedly connected to a limiting rod 615, and the surfaces of the screw rod 612 and the limiting rod 615 are commonly provided with a second fixing plate 613, the second fixing plate 613 is fixedly connected to the surface of another group of clamping plates 607, and one end of the screw rod 612 is fixedly connected to a rotating block 614.

[0026] The above scheme is adopted: through the design of the auxiliary plate 605, the first fixed plate 606, the clamping plate 607, the movable sleeve 608, the installation rod 609, the fixing ring 610, the rotating shaft 611, the screw rod 612, the second fixed plate 613, the rotating block 614 and the limiting rod 615, the two groups of clamping plates 607 can move on the surface of the movable sleeve 608. When they move to the appropriate position, the rotating block 614 is rotated, and the rotating block 614 will drive the screw rod 612 to rotate using the rotating shaft 611, so that the second fixed plate 613 drives one group of clamping plates 607 to approach the other group of clamping plates 607 and clamp it on the surface of the movable sleeve 608, thereby completing the position adjustment and fixation of the blocking rod 601. The blocking rod 601 can be close to the auxiliary plate 605 to prevent the position adjustment of the blocking rod 601 from deviation, thereby achieving the effect of making the use of the syringe more convenient and accurate.

[0027] refer to Figure 2One side of the surface of one group of clamping plates 607 is fixedly connected to a connecting shell 604, one side of the inner wall of the connecting shell 604 is fixedly connected to a spring pull rod 603, and the piston end of the spring pull rod 603 is fixedly connected to a fixed block 602; one side of the surface of the fixed block 602 is fixedly connected to a baffle rod 601, and four groups of baffle plates 616 corresponding to the baffle rod 601 are fixedly connected to the surface of the needle tube 1.

[0028] The above scheme is adopted: through the design of the baffle rod 601, the fixing block 602, the spring pull rod 603, the connecting shell 604 and the baffle plate 616, when the position of the baffle rod 601 is adjusted, the spring pull rod 603 is used to pull the baffle rod 601 outward, so that when the position adjustment is completed, release your hand, and the spring pull rod 603 will pull the baffle rod 601 to automatically reset, thereby achieving the effect of effectively preventing the baffle rod 601 from getting stuck.

[0029] The working principle of this utility model:

[0030] When in use, the two groups of clamping plates 607 can move on the surface of the movable sleeve 608. When they move to a suitable position, the rotating block 614 is rotated, and the rotating block 614 will drive the screw rod 612 to rotate using the rotating shaft 611, so that the second fixed plate 613 drives one group of clamping plates 607 to approach the other group of clamping plates 607 and clamp it on the surface of the movable sleeve 608, thereby completing the position adjustment and fixation of the blocking rod 601. The blocking rod 601 can be close to the auxiliary plate 605 to prevent the position adjustment of the blocking rod 601 from deviation, which can make the use of the syringe more convenient and accurate. When the position of the blocking rod 601 is adjusted, the spring pull rod 603 is used to pull the blocking rod 601 outward, so that when the position adjustment is completed, release your hand, the spring pull rod 603 will pull the blocking rod 601 to automatically reset, which can effectively prevent the blocking rod 601 from getting stuck.

[0031] To sum up: this syringe for intravenous injection, through the structure of auxiliary component 6, baffle rod 601, fixed block 602, spring pull rod 603, connecting shell 604, auxiliary plate 605, first fixed plate 606, clamping plate 607, movable sleeve 608, mounting rod 609, fixed ring 610, rotating shaft 611, screw rod 612, second fixed plate 613, rotating block 614, limit rod 615 and baffle plate 616, solves the problem that when performing intravenous injection, it is often necessary to control the injection amount to a certain extent to prevent the patient's body from being affected by too much or too little injection at one time. However, traditional syringes do not have the function of avoiding such situations, so problems are easily caused.

[0032] 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.

[0033] 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 syringe for intravenous injection, comprising a needle tube (1), characterized in that: The lower end of the needle tube (1) is fixedly connected to an injection head (2), a push block (3) is movably connected inside the needle tube (1), a push rod (5) is fixedly connected to the middle of the upper surface of the push block (3), connecting plates (4) are fixedly connected to the surface of the push rod (5) on all sides, a push plate (7) is fixedly connected to the upper surface of the push rod (5), and an auxiliary component (6) is commonly provided on the push rod (5) and the surface of the needle tube (1), and the auxiliary component (6) is used to control the amount of injection.

2. A syringe for intravenous injection according to claim 1, characterized in that: The auxiliary component (6) comprises a fixing ring (610), wherein the fixing ring (610) is fixedly connected to one end of the surface of the push rod (5), and auxiliary plates (605) are fixedly connected to the surface of the fixing ring (610) on all sides.

3. A syringe for intravenous injection as claimed in claim 2, characterized in that: Four groups of mounting rods (609) are fixedly connected to the upper surface of the fixing ring (610), and the upper ends of the four groups of mounting rods (609) are commonly fixedly connected to movable sleeves (608).

4. A syringe for intravenous injection as claimed in claim 3, characterized in that: The surface of the movable sleeve (608) is movably connected with two groups of clamping plates (607), one side of the surface of one group of the clamping plates (607) is fixedly connected to a first fixed plate (606), and one end of one side of the surface of the first fixed plate (606) is fixedly connected to a rotating shaft (611).

5. A syringe for intravenous injection as claimed in claim 4, characterized in that: A screw rod (612) is fixedly connected to one side of the rotating shaft (611); a limiting rod (615) is fixedly connected to the other end of one side of the surface of the first fixing plate (606); a second fixing plate (613) is commonly provided on the surfaces of the screw rod (612) and the limiting rod (615); the second fixing plate (613) is fixedly connected to the surface of another group of clamping plates (607); and a rotating block (614) is fixedly connected to one end of the screw rod (612).

6. A syringe for intravenous injection as claimed in claim 4, characterized in that: One side of the surface of one group of the clamping plates (607) is fixedly connected to a connecting shell (604), one side of the inner wall of the connecting shell (604) is fixedly connected to a spring pull rod (603), and the piston end of the spring pull rod (603) is fixedly connected to a fixing block (602).

7. A syringe for intravenous injection as claimed in claim 6, characterized in that: A blocking rod (601) is fixedly connected to one side of the surface of the fixed block (602), and four groups of blocking plates (616) corresponding to the blocking rod (601) are fixedly connected to the surface of the needle tube (1).

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