Infusion tube capable of preventing reverse flow of blood
An infusion tube and blood technology, applied in the field of infusion devices, can solve unscientific problems, and achieve the effects of low production cost, simple structure, and reduction of blood complications.
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Embodiment 1
[0019] Such as Figure 1-2 As shown, the infusion tube for preventing blood backflow includes an infusion drip pot 1, a regulator 2, a filter 3, an infusion tube 4, and an infusion needle 5, which are connected in sequence. In the figure, the filter 3 includes a The filter 3.1 and the plastic disc 3.2, the filter 3.1 and the plastic disc 3.2 are close to each other, the diameter of the plastic disc 3.2 is consistent with the diameter of the filter, and the plastic disc 3.2 is provided with a grid that can only move in one direction Plastic sheet, the diameter of the mesh plastic sheet is smaller than the diameter of the water molecule when the mesh plastic sheet is not stretched;
[0020] When the blood flows back from the infusion needle 5, it encounters the plastic disc 3.2. Due to the grid plastic sheet in the plastic disc 3.2, the grid plastic sheet can only move in one direction, and the grid plastic sheet cannot be expanded. Therefore, Blood molecules cannot pass throug...
Embodiment 2
[0022] Such as figure 1 , image 3 As shown, the infusion tube for preventing blood backflow includes an infusion drip pot 1, a regulator 2, a filter 3, an infusion tube 4, and an infusion needle 5, which are connected in sequence. The filter 3 in the figure includes a filter sheet 3.1 and a valve body 3.2. A stopper 3.3 is provided in the valve body 3.2, a spool 3.5 is provided in the stopper 3.3, a liquid inlet is provided in the spool 3.5, and the front top plate 3.4 and the rear top plate 3.6 are respectively arranged at the front and rear ends of the spool 3.5, There is a gap between the front top plate 3.4 and the valve body 3.2, the rear top plate 3.6 is close to the valve body 3.2, and the valve core 3.5 can slide in the front and rear two blocking pieces 3.3;
[0023] When infusing, the fluid flow can be as image 3 As shown by the arrow; when the blood flows back from the infusion needle 5, the thrust of the liquid pushes the rear top plate 3.6 to move, but the liq...
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