Thrombus preventive indwelling needle not blocking needle tubing
A technology for preventing thrombosis and indwelling needles, applied in the field of medical devices, can solve the problems of preventing thrombosis, blockage and other problems that cannot be fundamentally solved, and achieves the effect of no requirement for operating experience, obvious thrombosis prevention, and pain reduction.
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[0039] Example two
[0040] Except for the following differences, the rest is the same as the first embodiment:
[0041] Such as Figure 8 As shown, the traction assembly 5 is connected to the infusion tube 8 through the Y-shaped three-way connecting seat 7 and is close to the liquid medicine input port 9, and the infusion tube 8 is connected to the liquid medicine input port 9.
[0042] Between the bottom of the upper cover 5.2 and the top of the winding reel 5.3, and between the bottom of the winding reel 5.3 and the inner bottom of the bottom cover 5.4, the upper and lower sealing is performed by interference fit. Prevent the infusion liquid from returning.
[0043] Implementation Three
[0044] Except for the following differences, the rest is the same as the first embodiment:
[0045] Such as Picture 9 As shown, the traction assembly 5 is directly connected to the liquid medicine input port 11 through the Y-shaped three-way connecting seat 7.
[0046] The present invention can also...
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