Microinfusion pump

An infusion pump and micro-volume technology, applied in the direction of pressure infusion, devices introduced into the body, etc., can solve problems such as danger, out-of-control infusion, shedding, etc., and achieve the effects of good self-sealing ability, safety guarantee, and avoiding blood return

Inactive Publication Date: 2013-07-10
南京扬子医用制品有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the pump head is connected to the infusion bag during use, the clamping is often not in place, or it falls off halfway, which leads to the fact that the valve plate of the pump head cannot effectively prevent the water flow in the infusion bag. When the pressure is on or below the human body, the infusion will be out of control or the blood will return, resulting in danger

Method used

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Embodiment Construction

[0022] In order to make the content of the present invention more comprehensible, further description will be made below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the present invention includes a housing 3, a pump head 1 positioned within the housing 3, a fluid storage bag 2, a silicon capsule 4, and an infusion catheter 6; the silicon capsule 4 is located between the pump head 1 and the fluid storage bag 2; the pump head 1 It is provided with a driving part that can regularly squeeze the silicon capsule 4, so that the air pressure in the silicon capsule 4 changes; the pump head 1 is the prior art, and the driving part can be figure 1 The main pushing piece 11 shown in and the left valve piece 12 and the right valve piece 13 positioned at both sides of the main pushing piece 11; the liquid storage bag 2 is provided with a water outlet, and one end of the silicon capsule 4 communicates with the water outlet of th...

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Abstract

The invention discloses a microinfusion pump, which comprises a pump head, a liquid storage bag, a silica gel bag, an infusion conduit and a pressure control valve, wherein one end of the silica gel bag is communicated with the liquid storage bag, and the other end of the silica gel bag is communicated with the infusion conduit; a driving piece which can extrude the silica gel bag regularly, so that air pressure in the silica gel bag is changed is arranged on the pump head; the silica gel bag is communicated with the infusion conduit by the pressure control valve which is resistant to back flow and direct flow; the pressure control valve comprises an inner joint, an outer joint and a valve plate; a water inlet channel is formed on the inner joint and is communicated with the silica gel bag; a water outlet channel is formed on the outer joint and is communicated with the infusion conduit; the inner joint is hermetically connected with the outer joint, and an accommodating space which is used for communicating the water inlet channel and the water outlet channel is formed between the inner joint and the outer joint; the valve plate is made of an elastic material, and a water outlet hole is formed in the valve plate; and the valve plate is positioned in the accommodating space, so that the water inlet channel is separated from the water outlet channel. According to the microinfusion pump, the valve plate has a self-sealing capacity, so that situations of uncontrolled infusion and backflow of blood can be prevented under the pressure action of the pump head.

Description

technical field [0001] The invention relates to the technical field of microperistaltic pumps in medical instruments, in particular to a microinfusion pump that is not affected by gravity and can prevent blood return. Background technique [0002] Most of the medical micro-infusion peristaltic pumps used in the prior art are composed of an infusion control device (pump head for short) and an infusion bag. The pump head controls the infusion by controlling the outlet pipeline connected to the infusion bag. The working principle is: When the pump head is combined with the infusion bag, the left valve plate and the right valve plate on the pump head will press on the silicon capsule of the infusion bag, so that the liquid in the liquid storage bag is connected to the outlet end; The left valve plate, the right valve plate and the main push plate move regularly to generate pressure in the silicon capsule to achieve the purpose of infusion. However, when the pump head is connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/142
Inventor 徐志成田培华
Owner 南京扬子医用制品有限公司
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