Punching device for medical precision filtering membrane

Abstract

The invention provides a punching device for a medical precision filtering membrane, and belongs to the technical field of machines. The punching device resolves the problems that an existing punching device is utilized to punch a membrane, and a filtering membrane belt easily has the problem of producing static electricity in a conveying process and a repeated punching process. The punching device for the medical precision filtering membrane comprises a fixed support, a punching rod and a female die, wherein a punching hole is formed in the female die, the female die is fixedly connected with the fixed support, and the fixed support is provided with a first driving piece enabling the punching rod to move upwards and downwards and capable of being embedded into the punching hole. The punching device further comprises a discharging pressure head and an air electrostatic eliminator, the punching rod is of a tubular shape, the discharging pressure head is arranged in the punching rod and located at a lower port, an air-blowing port is formed in the lower end face of the discharging pressure head, and an air outlet of the air electrostatic eliminator is communicated with the air-blowing port. According to the punching device for the medical precision filtering membrane, by elimination of static electricity, the possibility that the filtering membrane is clamped in the female die is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a punching device, in particular to a punching device for a medical precision filter membrane. Background technique [0002] In recent years, researchers at home and abroad have found that insoluble particles in medicinal liquids will inevitably enter the human body through intravenous infusion or intravenous injection, which may cause acute reactions or potential dangers, and the harm is serious and long-lasting. These hazards mainly include vascular embolism, infarction, hemorrhage, granuloma, pulmonary fibrosis, allergic reaction, cancer reaction, pyrogen reaction, phlebitis, thrombocytopenia, increased venous pressure, pulmonary hypertension, etc. In order to reduce or prevent the above-mentioned things from happening, we usually add medicinal liquid filtration function to the infusion set, which is the disposable precision filter infusion set that people often use now. The co...

AI Technical Summary

Problems solved by technology

Although the punching device realizes the punching and forming of the filter membrane, there are still some common problems: 1. The filter membrane is made of paper, and dust and small burrs are easily generated during punching. The filter membrane directly enters the filter housing, which causes dust and fine burrs to enter the filter housing, thereby affecting the quality of the filter and causing unnecessary harm to the user

2. There is a gap between the cutting edge of the upper punch and the lower die, and the punched filter membrane will be slightly larger than the membrane outlet and cannot be dropped smoothly or the filter membrane is prone to flipping and cannot fall into the predetermined position when falling

3. The filter membrane belt is easy to generate static electricity during the conveying process and repeated punching process. Due to the light weight of the filter membrane, it is very easy to be adsorbed in the lower die under the action of static electricity and cannot fall freely.

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