Hemodialysis catheter
A technology of hemodialysis tube and dialysis unit, which is applied in the field of hemodialysis tube, can solve problems such as unstable blood pressure, large dialysis equipment, death, etc., and achieve the effect of avoiding invasive injury, increasing dialysis area, and improving dialysis efficiency
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[0036] Example 1
[0037] like Figure 1-3 As shown, this embodiment provides a hemodialysis tube, which includes a dialysis part 1 , a connecting part 2 connected to the dialysis part 1 , and a fixing part 3 disposed between the dialysis part 1 and the connecting part 2 .
[0038] The dialysis part 1 includes an outer dialysis tube 11 , an inner dialysis tube 12 and a dialysis membrane. The outer dialysis tube 11 is sleeved on the outer periphery of the inner dialysis tube 12, a space is left between the outer dialysis tube 11 and the inner dialysis tube 12 to facilitate blood circulation, and the outer dialysis tube 11 is hollowed out to facilitate blood entering the outer dialysis tube 11 and the dialysis tube. The space between the inner tubes 12 . The dialysis membrane is wrapped on the outer wall of the inner dialysis tube 12, and it can be considered that the inner dialysis tube 12 plays a role of supporting the dialysis membrane or shaping the dialysis membrane. The...
Example Embodiment
[0044] Example 2
[0045] This embodiment provides a polytetrafluoroethylene-polyurethane-nanosilver composite material and a preparation method thereof. The polytetrafluoroethylene-polyurethane-nanosilver composite material has good biocompatibility and antibacterial properties, and is used for hemodialysis The built-in dialysis tube has a good application prospect. The polytetrafluoroethylene-polyurethane-nano-silver composite material is prepared through the following steps:
[0046] Step 1: Weigh 54 g of polytetrafluoroethylene concentrated dispersion, 38 g of diisocyanate, and 14 g of polycaprolactone diol, stir and mix, heat to 80 ° C, and add 0.08 g of 1,4-butanediol and stannous octoate. 0.06g, continue to stir and maintain the heating temperature for 3h, then heat up to 90°C, and add 0.13g of trimethylolpropane monoallyl ether to continue the reaction for 3h, to obtain a polytetrafluoroethylene-polyurethane composite material.
[0047] Step 2: Disperse the polytetra...
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