Liquid suction auxiliary device of injector

Abstract

The utility model discloses an auxiliary liquid suction device for an injector. The auxiliary liquid suction device comprises an auxiliary shell, a liquid suction assembly and a rotating assembly, wherein the liquid suction assembly and the rotating assembly are movably connected with the auxiliary shell; a containing groove is formed in the auxiliary shell in the length direction, and the two ends of the containing groove are provided with a mounting groove used for mounting the liquid suction assembly and an internal thread rotationally connected with the rotating assembly correspondingly. The liquid suction assembly comprises an injector with one end clamped in the mounting groove and a core rod arranged in the injector in a penetrating mode, and the core rod is connected with the rotating assembly through a first connecting piece; an external thread is arranged outside the rotating assembly, and the rotating assembly is rotated to drive the core rod to move in the injector. The rotating assembly is rotationally connected with the auxiliary shell through the threads, the first connecting piece drives the core rod to move, the liquid suction effect is achieved, the specific numerical value of the current liquid suction amount is accurately obtained by setting the liquid suction amount of a circle of threads, and meanwhile the mode that the threads rotate to drive the core rod to move replaces the mode that the core rod of an injector is manually pushed and pulled. And bubbles are prevented from being sucked due to too high liquid suction speed.

Description

Technical Field

[0001] This utility model relates to the field of injection technology, specifically to a syringe aspiration auxiliary device. Background Technology

[0002] A syringe is a common medical device, mainly used to draw or inject gas or liquid using a needle.

[0003] Currently, syringes typically consist of a syringe barrel, a needle, and a plunger. When using a syringe to draw up medication, the needle is usually inserted into the medication bottle, the plunger is manually pulled, and the medication is drawn up to the marked capacity by visually observing the syringe piston baseline.

[0004] However, manually pushing and pulling the syringe plunger and visually judging the baseline cannot effectively control the accuracy of the drug aspiration volume. The accuracy of the syringe volume directly affects the accuracy and stability of the injected drug dosage, which in turn affects the therapeutic effect. In addition, if the syringe plunger is pulled too fast, small air bubbles are easily generated on the inner wall of the syringe after the drug is aspirated, which are difficult to expel and increase the need for air venting. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a syringe aspiration auxiliary device, which aims to solve the problems of the inability to effectively control the accuracy of drug aspiration by manually pushing and pulling the syringe plunger and visually judging the baseline, thus affecting the effect of drug treatment, and the problem that if the syringe plunger is pulled too fast, small air bubbles are easily generated on the inner wall of the syringe after aspiration, which are difficult to expel and increase the need for air venting.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a syringe liquid aspiration auxiliary device, comprising an auxiliary housing, a liquid aspiration component and a rotating component movably connected to the auxiliary housing;

[0007] The auxiliary housing has a receiving groove inside along its length. At both ends of the receiving groove are mounting grooves for installing the liquid suction assembly and internal threads for rotatably connecting with the rotating assembly.

[0008] The liquid aspiration assembly includes a syringe with one end locked in a mounting groove and a core rod passing through the syringe. The core rod is connected to the rotating assembly via a first connector.

[0009] The rotating assembly has an external thread, and rotating the rotating assembly drives the core rod to move inside the syringe.

[0010] In summary, the injection device for assisting liquid suction according to the utility model discloses a rotation assembly and auxiliary shell are connected through thread rotation, and then the first connecting piece drives the core rod to move, so that the function of liquid suction is realized, the liquid suction amount of one circle of thread can be set to accurately know the specific value of the current liquid suction amount, and the thread rotation drives the core rod to move, which replaces the manual pushing and pulling of the core rod of the injection device, and avoids the suction of air bubbles due to too fast liquid suction.The injection device for assisting liquid suction includes an auxiliary shell, a liquid suction assembly movably connected to the auxiliary shell and a rotation assembly.

[0011] According to an aspect of the above technical solution, one end of the injection device extends radially to form a mounting edge for clamping in the mounting groove.

[0012] According to an aspect of the above technical solution, the rotation assembly includes a rotating member rotatably connected to the auxiliary shell, a second connecting piece arranged at one end of the rotating member away from the injection device, and a reset button clamped on the second connecting piece, and the external thread is arranged on the outer periphery of the rotating member.

[0013] According to an aspect of the above technical solution, the rotating member includes a knob screw and a mounting portion arranged at one end of the knob screw, the diameter of the second connecting piece is not less than the inner diameter of the knob screw, and the second connecting piece is in interference fit with the knob screw.

[0014] According to an aspect of the above technical solution, the reset button is provided with at least two first clamping pins, and the first clamping pins are arranged in the second connecting piece to be installed in the mounting portion.

[0015] According to an aspect of the above technical solution, the first connecting piece includes a moving block, a clamping portion and at least two second clamping pins arranged at both ends of the moving block, respectively, the clamping portion is clamped at one end of the core rod away from the injection device, and the second clamping pin is arranged in one end of the knob screw away from the mounting portion.

[0016] According to an aspect of the above technical solution, the accommodating groove comprises a first cavity section for movement of the first connecting member, a second cavity section rotationally connected with the knob screw rod, and a third cavity section for connecting the syringe, the diameter of the third cavity section is smaller than the diameter of the first cavity section, and the diameter of the second cavity section is smaller than the diameter of the first cavity section.

[0017] According to an aspect of the above technical solution, the diameter of the moving block is greater than the diameters of the second cavity section and the third cavity section.

[0018] According to an aspect of the above technical solution, the auxiliary shell is further provided with an opening part for rotating the knob screw rod, and a scale table for identifying the scale capacity.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent from the following description in conjunction with the accompanying drawings, wherein:

[0021] Fig. 1 It is a structural schematic view of the syringe liquid suction auxiliary device in an embodiment of the present application;

[0022] Fig. 2 It is a sectional view of the syringe liquid suction auxiliary device in an embodiment of the present application.

[0023] Explanation of symbols of components in drawings:

[0024] Auxiliary shell 100, accommodating groove 110, first cavity section 111, second cavity section 112, third cavity section 113, mounting groove 120, internal thread 130, opening part 140, scale table 150, liquid suction assembly 200, syringe 210, mounting edge 211, core rod 220, first connecting member 300, moving block 310, clamping part 320, second clamping pin 330, rotating assembly 400, rotating member 410, knob screw rod 411, mounting part 412, second connecting member 413, reset button 420, first clamping pin 421. DETAILED DESCRIPTION

[0025] In order to make the purpose, features and advantages of the present application more apparent and easy to understand, the specific implementation manners of the present application will be described in detail below with reference to the drawings. The drawings show several embodiments of the present application. However, the present application can be realized 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 application more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "mounted" on another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", "upper", "lower", and similar terms as used herein are used for illustration only and are not intended to limit or imply the orientation or configuration in which the device or element is used, constructed, or operated, and are thus to be interpreted as non-restrictive.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected internally between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] Please refer to Figs. 1-2 , it is a structure schematic diagram of an injection syringe liquid suction auxiliary device provided in an embodiment of the present application, which comprises an auxiliary shell 100, a liquid suction assembly 200 movably connected with the auxiliary shell 100, and a rotating assembly 400, wherein:

[0029] In order to replace the traditional manual push-pull syringe 210 plunger 220, the present application proposes a spiral rotating mode to drive the plunger 220 to move, thereby realizing the purpose of accurate liquid suction and avoiding the problem of excessive liquid suction speed and air bubbles.

[0030] In order to realize the purpose of spiral rotation driving the plunger 220 to rotate, the inside of the auxiliary shell 100 is provided with a containing groove 110 along the length direction thereof for mounting the liquid suction assembly 200 and the rotating assembly. The containing groove 110 comprises a first cavity section 111, a second cavity section 112 rotatably connected with the rotating assembly 400, and a third cavity section 113 for mounting the liquid suction assembly 200, which are respectively arranged at both ends of the first cavity section 111. The third cavity section 113 is provided with a mounting groove 120 for mounting the liquid suction assembly 200 at the end away from the first cavity section 111, and the inner periphery of the second cavity section 112 is further provided with an inner thread 130 rotatably connected with the rotating assembly 400.

[0031] In order to realize the liquid suction function, the liquid suction assembly 200 comprises a syringe 210 which is clamped in the mounting groove 120, and a plunger rod 220 which is arranged in the syringe 210 and is connected to the rotating assembly 400 through the first connecting member 300 and is driven to move in the third cavity section 113 by the rotating assembly 400. The end of the syringe 210 close to the rotating assembly 400 extends radially to form a mounting edge 211 for clamping in the mounting groove 120. Therefore, the liquid suction auxiliary device of the syringe 210 can be used for the same model of syringe 210, and has a certain universality.

[0032] Further, in order to realize the rotating connection between the rotating assembly 400 and the internal thread 130 in the second cavity section 112, the rotating assembly 400 comprises a rotating member 410 which is rotatably connected to the auxiliary housing 100, a second connecting member 413 which is arranged at the end of the rotating member 410 away from the syringe 210, and a reset button 420 which is clamped on the second connecting member. The rotating member 410 is arranged in the second cavity section 112 and is connected to the plunger rod 220 through the first connecting member 300.

[0033] Further, the rotating member 410 comprises a knob screw 411 and a mounting portion 412 arranged at one end of the knob screw 411. The auxiliary housing 100 is provided with an opening portion 140 for rotating the knob screw 411, and a transparent window which is provided with a scale capacity. In use, the knob screw 411 exposed in the opening portion 140 can be directly rotated to realize the spiral rotation to drive the plunger rod 220 to suck liquid, and the scale 150 on the transparent window can directly indicate the current liquid suction amount. It is worth noting that, in order to accurately suck liquid, the liquid suction amount of one turn of the knob screw 411 is a fixed value in this embodiment, so as to facilitate the medical staff to rotate the knob screw 411 to suck liquid.

[0034] In addition, in order to assemble the second connecting member 413, the diameter of the second connecting member 413 in this embodiment is not less than the inner diameter of the knob screw 411, so that when the second connecting member 413 is assembled to the mounting portion 412, the second connecting member 413 can be directly assembled on the knob screw 411 by interference fit. The reset button 420 is provided with at least two first clamping pins 421 which are pressed to be arranged in the second connecting member 413, so that the first clamping pins 421 are clamped in the second connecting member 413. The function of the reset button 420 is that when the knob screw 411 is rotated out, in order to reset it, only need to apply downward pressure to the reset button 420, the knob screw 411 will rotate towards the second cavity section 112 along the track of the internal thread 130 until it is reset.

[0035] In order to drive the core rod 220 to move by the knob screw 411, the first connecting piece 300 comprises a moving block 310, a clamping portion 320 and at least two second clamping pins 330 arranged at two ends of the moving block 310 respectively, the clamping portion 320 is clamped at one end of the core rod 220 away from the syringe 210, and the second clamping pin is arranged at one end of the knob screw 411 away from the mounting portion 412. In order to avoid limiting the moving range of the moving block 310, the diameter of the moving block 310 is greater than the diameter of the second cavity section 112 and the diameter of the third cavity section 113, so as to avoid that the moving block 310 moves too far to one side, and then falls off from the core rod 220 or the knob screw 411.

[0036] In summary, according to the injection syringe liquid suction auxiliary device, the rotating assembly and the auxiliary shell are connected through threads, and then the first connecting piece drives the core rod to move, so that the liquid suction function is realized. The liquid suction amount of one circle of threads can be set to accurately know the specific value of the current liquid suction amount, and the thread rotating driving the core rod to move replaces the manual pushing and pulling of the syringe core rod, so as to avoid that the liquid suction speed is too fast to suck in air bubbles. Specifically, the injection syringe liquid suction auxiliary device comprises an auxiliary shell, a liquid suction assembly movably connected with the auxiliary shell, and a rotating assembly. The auxiliary shell is internally provided with an accommodating groove along the length direction, two ends of the accommodating groove are respectively provided with a mounting groove for mounting the liquid suction assembly and an internal thread rotatably connected with the rotating assembly; the liquid suction assembly comprises a syringe clamped at one end of the mounting groove and a core rod arranged in the syringe, and the core rod is connected with the rotating assembly through the first connecting piece; the rotating assembly is externally provided with an external thread, and the rotating assembly and the auxiliary shell are connected through threads to drive the movement of the core rod, so as to replace the direct manual pushing and pulling of the syringe core rod, reduce the liquid suction speed, and accurately control the content of the sucked liquid by setting the liquid suction amount of each circle of threads.

[0037] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean 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.

[0038] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A syringe aspiration assist device, characterized in that, The injection suction auxiliary device comprises an auxiliary housing, a suction assembly movably connected with the auxiliary housing, and a rotating assembly; The auxiliary housing has a receiving groove formed along the length direction inside, two ends of the receiving groove are respectively provided with a mounting groove for mounting the suction assembly and an internal thread for rotationally connecting with the rotating assembly; The suction assembly comprises a syringe mounted at one end in the mounting groove and a plunger rod penetrating through the syringe, the plunger rod is connected with the rotating assembly through a first connecting member; The rotating assembly is externally provided with an external thread, and the rotating assembly is rotated to drive the plunger rod to move in the syringe.

2. The syringe aspiration assist device of claim 1, wherein, One end of the syringe extends radially to form a mounting edge for being clamped in the mounting groove.

3. The syringe suction aid of claim 1, wherein, The rotating assembly comprises a rotating member rotationally connected with the auxiliary housing, a second connecting member provided at one end of the rotating member away from the syringe, and a reset button clamped on the second connecting member, and the external thread is provided on the outer periphery of the rotating member.

4. The syringe aspiration assist device of claim 3, wherein, The rotating member comprises a knob screw and a mounting portion provided at one end of the knob screw, the diameter of the second connecting member is not less than the inner diameter of the knob screw, and the second connecting member is in interference fit with the knob screw.

5. The syringe aspiration assist device of claim 4, wherein, The reset button is provided with at least two first clamping pins, the first clamping pins penetrate into the second connecting member to be mounted in the mounting portion.

6. The syringe suction aid of claim 1, wherein, The first connecting member comprises a moving block, clamping portions and at least two second clamping pins respectively provided at two ends of the moving block, the clamping portions are clamped at one end of the plunger rod away from the syringe, and the second clamping pins penetrate through one end of the knob screw away from the mounting portion.

7. The syringe suction aid of claim 1, wherein, The receiving groove comprises a first cavity section for the movement of the first connecting member, a second cavity section rotationally connected with the knob screw, and a third cavity section for connecting the syringe, the diameter of the third cavity section is smaller than the diameter of the first cavity section, and the diameter of the second cavity section is smaller than the diameter of the first cavity section.

8. The syringe aspiration assist device of claim 7, wherein, The diameter of the moving block is greater than the diameters of the second cavity section and the third cavity section.

9. The syringe suction aid of claim 1, wherein, The auxiliary housing is further provided with an opening portion for rotating the knob screw and a scale table for identifying the scale capacity.

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