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Micro-injection pump

A technology of micro-injection pump and pump body, which is applied in the direction of syringes, automatic injectors, and other medical devices, which can solve the problems of inaccurate injection volume and easy external influence on the pumped volume, so as to reduce noise, improve accuracy and liquid The effect of improving flow stability and vibration suppression effect

Pending Publication Date: 2018-12-21
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It adopts the peristaltic type, that is, the pump liquid valve reciprocates through the electric control system, squeezes the infusion line to squeeze out the liquid medicine, and realizes the liquid flow in a peristaltic manner, which often results in inaccurate injection volume, and the pump volume is easily affected by the outside world. influences

Method used

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying ...

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Abstract

The invention relates to a micro-injection pump. The micro-injection pump comprises a pump body and a driving device; the pump body is internally provided with a liquid supply cavity, a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is communicated with one end of the bottom of the liquid supply cavity, the liquid outlet channel is communicated with the other end of thebottom of the liquid supply cavity, and a liquid inlet pipe is arranged at the tail end of the liquid inlet channel; a liquid outlet pipe is arranged at the tail end of the liquid outlet channel, aninlet one-way valve is arranged on the liquid inlet pipe, an outlet one-way valve is arranged on the liquid outlet pipe, and the driving device comprises a shell, a top cover, a piezoceramic driver, adriving base, connecting arms, a driving rod and an elastic press membrane; the connecting arms are connected between the driving base and the shell, the upper end of the driving base is provided with a mounting groove of a piezoceramic starter, the top cover is arranged at the top of the driving base, the upper end of the driving rod is connected with the lower end of the driving base, the lowerend of the driving rod is connected with one end face of the elastic press membrane, and the other end face of the elastic press membrane and the liquid supply cavity surround a pump cavity. The micro-injection pump has the advantages that the vibration abatement capability is good, and the injection amount is precise.

Description

technical field [0001] The invention relates to the field of medical equipment, more specifically, to a micro injection pump. Background technique [0002] The medical micro-injection pump pumps a small amount of liquid medicine into the body accurately, evenly and continuously, and adjusts the concentration and speed of the medicine at any time according to the needs of the disease, so as to maintain the effective blood concentration of the medicine in the body. Therefore, it is widely used in ICU, CCU, pediatrics, cardiothoracic, brain surgery, general surgery and other critically ill patients. [0003] Chinese patent ZL201710031476.5 proposes a peristaltic pump structure, including pump head, driver, pump tube and other structures, through the selected STC12C5A32S single-chip microcomputer to send commands such as start-stop, detection, etc. Pump injection. It adopts the peristaltic type, that is, the pump liquid valve reciprocates through the electric control system, s...

Claims

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Application Information

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IPC IPC(8): A61M5/20
CPCA61M5/20A61M2005/2026A61M2205/42
Inventor 朱大昌杨家谋朱谱辰占旺虎张海维
Owner GUANGZHOU UNIVERSITY
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