Air non-return pressure relief device

An air and slow pressure technology, applied in the field of medical infusion pumps, can solve problems such as inability to achieve accurate infusion, unstable air pressure, and unstable dripping speed of infusion pumps, so as to avoid gas and liquid pollution, ensure air tightness, and ensure The effect of controllability and safety

Active Publication Date: 2013-05-15
SHENZHEN WANJUYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing infusion pump is equipped with an air pump, and the air pump will start to work at intervals, but the frequent start of the air pump will cause unstable air pressure in the infusion bottle and unstable dripping speed of the infusion pump, which cannot meet the requirements of precise infusi

Method used

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Examples

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Example Embodiment

[0014] The invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0015] like figure 1 , figure 2 As shown, in this embodiment, the air backstop and pressure relief device includes a backstop system 1, a pressure relief system 2 and a transfer system 3, and each system of the device forms an air flow passage in a manner of sequentially snap-connecting. The check system 1 includes a connecting pipe 11 fixedly clamped on the air pump 7 and an air one-way valve 12 connected to the right end of the connecting pipe; The left end is connected, the right end of the energy accumulating and pressure-relieving bin is connected with the left end on the cross arm of the T-shaped three-way pipe 4 , and the right end of the cross arm is connected with the transfer system 3 .

[0016] like image 3 As shown, the air one-way valve 12 includes a hollow cylindrical casing, the two ends of which are an air inlet 121 and an air outlet 122 re...

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Abstract

The invention discloses an air non-return pressure relief device which comprises a non-return system, a pressure relief system and a switchover system, wherein the non-return system, the pressure relief system and the switchover system are communicated in sequence. The non-return system includes a connecting pipe and an air non-return valve which is communicated with one end of the connecting pipe. The pressure relief system comprises an energy-gathered pressure relief capsule which is communicated with the other end of the air non-return valve. The energy-gathered pressure relief capsule is connected with the switchover system through a transverse arm of a T-shaped three-way pipe, and a longitudinal arm of the T-shaped three-way pipe is connected with an air pressure inductor. According to the air non-return pressure relief device, the air non-return system, the pressure relief system and the switchover system are utilized. Not only can controllability and safety of the air be guaranteed, but also air impermeability is guaranteed. Meanwhile, pollution of air and chemical liquid caused by ray irradiation and air return is avoided.

Description

technical field [0001] The invention relates to the field of medical infusion pumps, in particular to an air backstop pressure-reducing device for a pneumatic gravity-compensated infusion pump. Background technique [0002] Intravenous infusion is one of the most commonly used treatment methods clinically. During the infusion, the air that needs to be purified continuously enters the liquid medicine in the bottle. The existing infusion pump is equipped with an air pump, and the air pump will start to work at intervals, but the frequent start of the air pump will cause unstable air pressure in the infusion bottle and unstable dripping speed of the infusion pump, which cannot meet the requirements of precise infusion; now Some technologies cannot guarantee the air pollution and liquid medicine pollution caused by gas backflow, and at the same time cannot guarantee the air and liquid medicine pollution caused by external light source irradiation. If the contaminated liquid is i...

Claims

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Application Information

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IPC IPC(8): A61M5/142
CPCA61M5/155A61M5/142A61M39/24A61M2039/248A61M16/208
Inventor 田万宝
Owner SHENZHEN WANJUYUAN TECH
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