Infusion control device for intravenous infusion

Abstract

The infusion control device comprises a fixing plate, a control assembly and a driving assembly, the control assembly is arranged on the first surface of the fixing plate, the driving assembly is arranged on the second surface of the fixing plate, the control assembly is provided with a first cavity and a second cavity which are not communicated with each other, and the first cavity and the second cavity are communicated with each other. A first piston and a second piston are arranged in the first cavity and the second cavity correspondingly, and the driving assembly can drive the first piston and the second piston to move in the opposite directions. By means of the control assembly, the output stability of the liquid medicine can be controlled, and it is ensured that the liquid medicine can be pumped out more stably and more continuously.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion control devices, in particular to an infusion control device for intravenous infusion. Background Art

[0002] Intravenous infusion is a commonly used medical method. During the infusion, medical staff need to adjust the infusion drip rate, because different medicines need to be infused at relative drip rates. When the infusion is about to be completed, medical staff must pull out the infusion needle in time to avoid blood backflow in the infusion tube or air input into the blood vessel. In clinical practice, infusion pumps are often used for infusion. Infusion pumps integrate functions such as controlling the drip rate, displaying the drip rate, and detecting whether the infusion is completed. The plunger pump infusion device of the prior art controls the infusion flow rate by controlling the operating frequency of the plunger pump. The working principle of the plunger pump is: inhaling the medicine, then discharging the medicine, and so on. The above working method makes it possible for the plunger pump to pump out the medicine only once in one operating cycle, and the working efficiency is low. Therefore, the present application aims to provide an infusion control device for intravenous infusion that has high infusion efficiency and can control the stability of the infusion process. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an infusion control device for intravenous infusion.

[0004] The purpose of the utility model is achieved through the following technical scheme: an infusion control device for intravenous infusion, comprising a fixed plate, a control component and a drive component, the control component is arranged on the first surface of the fixed plate, and the drive component is arranged on the second surface of the fixed plate, wherein the control component has a first cavity and a second cavity that are not connected to each other, and a first piston and a second piston are respectively arranged in the first cavity and the second cavity, and the drive component can drive the first piston and the second piston to move in opposite directions.

[0005] Preferably, the control assembly comprises a first piston cylinder and a second piston cylinder, and both the first piston cylinder and the second piston cylinder are detachably disposed on the fixing plate.

[0006] Preferably, the first piston is disposed in the first piston cylinder, and the second piston is disposed in the second piston cylinder, and when the first piston moves along a first direction, the second piston moves along a second direction, and the first direction and the second direction are opposite to each other.

[0007] Preferably, a first liquid inlet pipe and a first liquid discharge pipe are provided on the first piston cylinder, and the first liquid inlet pipe and the first liquid discharge pipe are both unidirectionally connected.

[0008] Preferably, a second liquid inlet pipe and a second liquid discharge pipe are provided on the second piston cylinder, and the second liquid inlet pipe and the second liquid discharge pipe are both in one-way communication.

[0009] Preferably, the control component also includes a push rod motor, a gear, a first rack and a second rack, the push rod motor and the gear are both arranged on the fixed plate, one end of the first rack is connected to the push rod motor, and the other end of the first rack is connected to the first piston.

[0010] Preferably, the second rack is connected to the second piston, and the first rack and the second rack are both meshed with the gear, wherein the first rack is located on a first side of the gear and the second rack is located on a second side of the gear.

[0011] The utility model has the following advantages:

[0012] (1) The plunger pump infusion device of the prior art controls the infusion flow rate by controlling the operating frequency of the plunger pump. The working principle of the plunger pump is to suck in the medicine liquid and then discharge the medicine liquid, and repeat this cycle. The above working method makes it possible for the plunger pump to pump out the medicine liquid only once in one operating cycle, and the working efficiency is low. The control component of the present application has a first cavity and a second cavity. When the first cavity sucks in the medicine liquid, the second cavity discharges the medicine liquid. Similarly, when the first cavity discharges the medicine liquid, the second cavity sucks in the medicine liquid, thereby ensuring the continuous pumping out of the medicine liquid. Through the control component of the present application, the output stability of the medicine liquid can be controlled to ensure that the medicine liquid can be pumped out more stably and continuously.

[0013] (2) The first piston and the second piston can be moved in different directions by one power source (push rod motor). Compared with providing different power sources for the first piston and the second piston respectively, the present application can achieve the purpose of reducing equipment manufacturing costs and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A front view of an infusion control device for intravenous infusion;

[0015] Figure 2 A rear view of an infusion control device for intravenous infusion;

[0016] Figure 3 It is a schematic diagram of the arrangement of the balls in a cross-sectional state;

[0017] In the figure, 1-fixed plate, 2-control component, 3-drive component, 1a-first surface, 1b-second surface, 2a-first cavity, 2b-second cavity, 4-first piston, 5-second piston, 2-1-first piston cylinder, 2-2-second piston cylinder, 6-first liquid inlet pipe, 7-first liquid discharge pipe, 8-second liquid inlet pipe, 9-second liquid discharge pipe, 10-push rod motor, 11-gear, 12-first rack, 13-second rack, 14-fixed buckle, 15-sliding groove, 16-sliding block, 17-ball. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:

[0019] like Figures 1 to 3 As shown, the present application provides an infusion control device for intravenous infusion, including a fixed plate 1, a control component 2 and a drive component 3, wherein the control component 2 is arranged on the first surface 1a of the fixed plate 1, and the drive component 3 is arranged on the second surface 1b of the fixed plate 1, wherein the control component 2 has a first cavity 2a and a second cavity 2b which are not connected to each other, and a first piston 4 and a second piston 5 are arranged in the first cavity 2a and the second cavity 2b respectively, and the drive component 3 can drive the first piston 4 and the second piston 5 to move in opposite directions. Specifically, the control component 2 includes a first piston cylinder 2-1 and a second piston cylinder 2-2, and the first piston cylinder 2-1 and the second piston cylinder 2-2 can be detachably arranged on the fixed plate 1. The first piston 4 is arranged in the first piston cylinder 2-1, and the second piston 5 is arranged in the second piston cylinder 2-2. When the first piston 4 moves in the first direction, the second piston 5 moves in the second direction, and the first direction and the second direction are opposite to each other. The plunger pump infusion device of the prior art controls the infusion flow rate by controlling the working frequency of the plunger pump. The working principle of the plunger pump is: sucking in the medicine liquid, then discharging the medicine liquid, and repeating this cycle. The above working method makes it possible for the plunger pump to pump out the medicine liquid only once in one operating cycle, and the working efficiency is low. The control component of the present application has a first cavity and a second cavity. When the first cavity sucks in the medicine liquid, the second cavity discharges the medicine liquid. Similarly, when the first cavity discharges the medicine liquid, the second cavity sucks in the medicine liquid, thereby ensuring the continuous pumping out of the medicine liquid. Through the control component of the present application, the output stability of the medicine liquid can be controlled to ensure that the medicine liquid can be pumped out more stably and continuously.

[0020] Preferably, the first piston cylinder 2-1 is provided with a first liquid inlet pipe 6 and a first liquid discharge pipe 7, and the first liquid inlet pipe 6 and the first liquid discharge pipe 7 are both unidirectionally connected. The second piston cylinder 2-2 is provided with a second liquid inlet pipe 8 and a second liquid discharge pipe 9, and the second liquid inlet pipe 8 and the second liquid discharge pipe 9 are both unidirectionally connected. The ends of the first liquid inlet pipe 6 and the first liquid discharge pipe 7 can be provided with a diaphragm-type one-way valve, which can be automatically opened and closed based on the pressure difference on both sides thereof. The diaphragm-type one-way valves in the first liquid inlet pipe 6 and the first liquid discharge pipe 7 are arranged in opposite directions. When the pressure inside the first cavity increases, the first liquid inlet pipe 6 is closed and the first liquid discharge pipe 7 is opened. When the pressure inside the first cavity decreases, the first liquid inlet pipe 6 is opened and the first liquid discharge pipe 7 is closed. The diaphragm-type one-way valves arranged in the same manner in the second liquid inlet pipe and the second liquid discharge pipe are not described in detail. It can be understood that at least two fixing buckles 14 can be provided on the fixing plate 1 for connecting and fixing the infusion tube.

[0021] Preferably, the control assembly 2 further includes a push rod motor 10, a gear 11, a first rack 12 and a second rack 13. The push rod motor 10 and the gear 11 are both arranged on the fixed plate 1. One end of the first rack 12 is connected to the push rod motor 10, and the other end of the first rack 12 is connected to the first piston 4. The second rack 13 is connected to the second piston 5. The first rack 12 and the second rack 13 are both meshed with the gear 11, wherein the first rack 12 is located on the first side of the gear 11, and the second rack 13 is located on the second side of the gear 11. Through the transmission of the gear 11, the first rack and the second rack can be moved in different directions, that is, as Figure 2 As shown, when the first rack moves downward, the second rack moves upward, and when the first rack moves upward, the second rack moves downward. With the above-mentioned arrangement, the movement of the first piston and the second piston in different directions can be achieved through one power source (push rod motor). Compared with respectively setting different power sources for the first piston and the second piston, the present application can achieve the purpose of reducing equipment manufacturing costs and reducing energy consumption. It can be understood that a sliding groove 15 can be provided on the fixed plate, and a slider 16 can be provided in the sliding groove 15, and the first rack, the second rack, the first piston, and the second piston can all be connected to the slider. As shown in FIG. Figure 3 As shown, a plurality of balls 17 are arranged at intervals along the extension direction of the sliding groove 15 on the fixing plate 1, and the sliding block can abut against the balls, thereby reducing the friction resistance that the sliding block needs to overcome when moving.

[0022] The working principle of the present application is as follows: the present application can be connected to the housing of the infusion pump through the threaded holes on the four corners of the fixing plate 1, so as to achieve combined use. Subsequently, the infusion bottle is connected to the first inlet pipe and the second inlet pipe respectively through two infusion tubes, and the first discharge pipe and the second discharge pipe can also be connected to the infusion tube. Finally, starting the push rod motor can drive the first piston and the second piston to move, so that the liquid medicine is continuously discharged through the first discharge pipe and the second discharge pipe. When the flow rate of the liquid medicine needs to be adjusted, it is only necessary to speed up or slow down the working frequency of the push rod motor.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An infusion control device for intravenous infusion, characterized in that: The invention comprises a fixed plate (1), a control component (2) and a drive component (3), wherein the control component (2) is arranged on a first surface (1a) of the fixed plate (1), and the drive component (3) is arranged on a second surface (1b) of the fixed plate (1), wherein the control component (2) has a first cavity (2a) and a second cavity (2b) which are not connected to each other, a first piston (4) and a second piston (5) are respectively arranged in the first cavity (2a) and the second cavity (2b), and the drive component (3) can drive the first piston (4) and the second piston (5) to move in opposite directions.

2. The intravenous infusion control device according to claim 1, characterized in that: The control assembly (2) comprises a first piston cylinder (2-1) and a second piston cylinder (2-2), and the first piston cylinder (2-1) and the second piston cylinder (2-2) are both detachably arranged on the fixing plate (1).

3. The intravenous infusion control device according to claim 2, characterized in that: The first piston (4) is arranged in the first piston cylinder (2-1), and the second piston (5) is arranged in the second piston cylinder (2-2). When the first piston (4) moves in a first direction, the second piston (5) moves in a second direction, and the first direction and the second direction are opposite to each other.

4. The intravenous infusion control device according to claim 3, characterized in that: The first piston cylinder (2-1) is provided with a first liquid inlet pipe (6) and a first liquid discharge pipe (7), and the first liquid inlet pipe (6) and the first liquid discharge pipe (7) are both unidirectionally connected.

5. The intravenous infusion control device according to claim 3, characterized in that: The second piston cylinder (2-2) is provided with a second liquid inlet pipe (8) and a second liquid discharge pipe (9), and the second liquid inlet pipe (8) and the second liquid discharge pipe (9) are both unidirectionally connected.

6. The intravenous infusion control device according to claim 2, characterized in that: The control assembly (2) further comprises a push rod motor (10), a gear (11), a first rack (12) and a second rack (13); the push rod motor (10) and the gear (11) are both arranged on the fixed plate (1); one end of the first rack (12) is connected to the push rod motor (10), and the other end of the first rack (12) is connected to the first piston (4).

7. The intravenous infusion control device according to claim 6, characterized in that: The second rack (13) is connected to the second piston (5), and the first rack (12) and the second rack (13) are both meshed with the gear (11), wherein the first rack (12) is located on a first side of the gear (11), and the second rack (13) is located on a second side of the gear (11).

Images