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Automatic instillation device

A dripping and automatic technology, applied in the direction of non-electric variable control, flow control, instruments, etc., can solve the problems of not too much liquid storage, complex mechanical structure, unfavorable liquid medicine replacement, etc., to achieve reliable protection effect and improve reliability , Simple and reliable mechanical structure

Inactive Publication Date: 2013-01-30
FIRST CLINICAL MEDICAL SCI COLLEGE OF CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing infusion device needs to hang the liquid at a high place, and use the liquid's own weight to drip into the human body, which is inconvenient to use
[0003] Chinese patent 02810203.7 discloses an infusion device for a fluid pump, which discloses an infusion pump for liquid supply, which uses a piston to supply liquid, and the liquid is contained in a container similar to a piston cylinder. The problem is that the liquid storage is usually not too much, and it is not conducive to the replacement of the liquid medicine, or if the whole is replaced, other accessories need to be discarded, which is a big waste
The mechanical structure is also more complex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 , figure 2 Among them, an automatic infusion device, including a pipeline 3, one end of the pipeline 3 is provided with a first adapter 2 for connecting with the liquid storage bag 1, and the other end is used for connecting with the infusion needle. There is a liquid supply device 5 that supplies liquid to the pipeline 3 in a variable volume manner, and a point pressure drive device 4 for driving the volume of the liquid supply device 5 to change.

[0031] In the liquid supply device 5, the housing 516 is provided with a flexible flap 511 to form a cavity with variable volume, and the flexible flap 511 is made of rubber or plastic.

[0032] A one-way valve is provided at both ends of the housing 516 . The flexible flap 511 is deformed by the point pressure driving device 4 , thereby changing the volume of the housing 516 , and under the action of the one-way valves at both ends, liquid droplets flowing to the infusion needle 6 are formed. This enab...

Embodiment 2

[0034] On the basis of Example 1, in the optimized scheme, such as image 3 As shown in , in the liquid supply device 5, the housing 516 is provided with a flexible flap 511 to form a cavity with variable volume. One end of the housing 516 is provided with a first one-way valve 513, and the other end is provided with a Safety check valve 514.

[0035] Such as Figure 4 In the above-mentioned safety one-way valve 514, the other side of the safety one-way valve spool is also provided with a safety valve seat 515 that cooperates with the one-way valve spool to form a blockage. On the basis of Embodiment 1, the provided safety valve seat 515 can avoid that the one-way valves at both ends of the liquid supply device 5 are always in a normally open state due to the pressure on the liquid storage bag 1 . When the fluid storage bag 1 is under pressure, the liquid closes between the valve core of the safety one-way valve 514 and the safety valve seat 515 to prevent the passage of the...

Embodiment 3

[0037] On the basis of Example 2, in the optimized scheme, such as Figure 5 As shown, in the liquid supply device 5 described above, the housing 516 is provided with a flexible flap 511 to form a cavity with a variable volume, and safety check valves 514 are provided at both ends of the housing 516 . In the safety one-way valve 514, the other side of the safety one-way valve spool is also provided with a safety valve seat 515 that cooperates with the one-way valve spool to form a block. With this structure, the safety is further improved, and the flexible flap 511 is prevented from being damaged due to excessive pressure. Moreover, the liquid supply device 5 can operate even under a pressure-bearing condition with a relatively small pressure. The details are as follows, when the liquid storage bag 1 is under pressure, the pressure of the liquid makes the valve core of the upper safety one-way valve 514 close with the safety valve seat 515. The spool of the valve 514 returns...

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Abstract

The invention discloses an automatic instillation device which comprises a pipeline, wherein one end of the pipeline is used for being connected with a liquid storage bag, the other end of the pipeline is used for being connected with an instillation needle, and a liquid supply device used for supplying liquid to the pipeline in a mode of variable volume and a point pressure drive device used for driving the liquid supplying device to be changed in volume are arranged on the pipeline. According to the invention, through the arranged liquid supply device and the point pressure drive device, continuous drops can be automatically provided and are instilled into a human body through the pipeline and the instillation needle, therefore, the liquid storage bag is not needed to be suspended overhead, and a patient is favorably moved. A safety check valve is provided with a safety valve seat, and when the liquid storage bag is pressed, the matching of a valve plug and the safety valve seat in the safety check valve can prevent more liquid from entering the pipeline. The existing liquid storage bag can be adopted, during replacement, the pipeline and the liquid supply pipeline are only discarded, and residual parts can be recycled, therefore, the automatic instillation device is beneficial to resource saving, is simple and reliable in mechanical structure, and is low in manufacture cost.

Description

technical field [0001] The invention relates to the field of infusion drug delivery equipment in medical equipment, in particular to an automatic infusion device. Background technique [0002] The existing infusion device needs to suspend the liquid at a high place, and use the liquid's own weight to drip into the human body, which is inconvenient to use. [0003] Chinese patent 02810203.7 discloses an infusion device for a fluid pump, which discloses an infusion pump for liquid supply, which uses a piston to supply liquid, and the liquid is contained in a container similar to a piston cylinder. The problem is that usually the liquid storage should not be too much, and it is not conducive to the replacement of the liquid medicine, or if the whole is replaced, other accessories need to be discarded, which is a big waste. The mechanical structure is also more complicated. Contents of the invention [0004] The technical problem to be solved by the present invention is to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/14A61M5/168
Inventor 舒德喜易凤仙周军杜梅林向琼芳
Owner FIRST CLINICAL MEDICAL SCI COLLEGE OF CHINA THREE GORGES UNIV
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