Automatic liquid stopping infusion apparatus
An infusion set and stop fluid technology, which is applied in flow monitors, hypodermic injection devices, and devices introduced into the body, etc., can solve the problems of air ingress, inconvenience, and inability to ensure that the infusion tube will not have air columns, etc., to increase safety , the effect of increasing applicability
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Embodiment 1
[0041] A kind of automatic liquid stop transfusion device, refer to Figure 1-Figure 4 As shown, it includes a dripping funnel 1 and an infusion tube 6. The dripping funnel 1 includes a liquid-holding cavity 101 and a liquid inlet 102 and a liquid outlet 103 located at the upper and lower ends of the liquid-holding cavity. The liquid outlet 103 communicates with the infusion tube 6. The bucket 1 and the infusion tube 6 are made of a flexible material as a whole. In this solution, the flexible material is PVC or TPE, and a matching tube 2 is connected between the liquid outlet 103 and the infusion tube 6. The straight guide is provided with a floating plug 8 that can expose the liquid outlet 103 or completely block the liquid outlet 103. The floating plug 8 includes a sealing body 802 whose lower end can be sealed and inserted with the matching pipe 2 and an expansion body 801 whose upper end has a variable volume. , the sealing body 802 is made of a solid elastic material as a...
Embodiment 2
[0048] This embodiment makes improvements on the basis of embodiment 1, with reference to Figure 5 As shown, a magnetic auxiliary mechanism is provided between the floating plug 8 and the matching pipe 2. The magnetic auxiliary mechanism includes a first magnet 15 fixedly arranged at the lower end of the sealing body 802 and a first magnet 15 fixed in the matching pipe 2 and in phase with the first magnet 15. Suction second magnet or metal body.
[0049] In this embodiment, the filter 14 is made of magnetic material or iron. When the sealing body 802 is lowered close to or partially inserted into the matching pipe 2, it can enter the magnetic induction range, and the first magnet 15 and the filter 14 attract each other. Drive the sealing body 802 to drop rapidly to block the liquid outlet 103. This setting can further reduce the probability of gas entering the matching pipe 2. When the sealing body 802 seals the liquid outlet 103, the liquid level in the liquid cavity 101 wil...
Embodiment 3
[0051] This embodiment is improved on the basis of embodiment 2, with reference to Figure 6 As shown, between the floating plug 8 and the liquid-holding cavity 101, a debugging piece for balancing magnetic force and buoyancy is provided. Because the support sleeve 7 is provided in the embodiment, the lower end of the adjustment spring 16 is fixedly connected to the upper end surface of the support sleeve 7, and the upper end of the adjustment spring 16 is fixedly connected to the floating plug 8, and the buoyancy of the floating plug 8+the adjustment spring The sum of the elastic forces of 16>the weight of the floating blocking member 8+the sum of the magnetic force of the magnetic auxiliary mechanism>the elastic force of the debugging spring 16.
[0052] By adding the adjustment spring 16, the magnetic force can be balanced. After the infusion bag is replaced, it can provide the lifting force for the floating blocking member 8 to float upwards, so that the floating blocking ...
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