Fluid infusion multi-times multi-face sealing control device

Abstract

A fluid infusion multi-times multi-face sealing control device comprises a drop syringe (1) and is characterized in that a soft sealing body (3) is arranged in a drip chamber (2) of the drop syringe (1). The device has the advantages that after injection of injection liquid is about to finish, the lower outer surface of a thin-wall soft bag seals the inner wall of a water outlet of the drip chamber, the injection liquid in the thin-wall soft bag flows out from a water inlet and outlet of the soft sealing body under the action of gravity of a floating body, the thin-wall soft bag carries out secondary two-face sealing on the end face of the water outlet of the drip chamber, sealing precision is high, almost no air or liquid flows into a transparent pipe outside a liquid outlet of the drip chamber, after the liquid is replaced, the liquid flows into the drip chamber again, the soft sealing body can float easily under the action of buoyancy, and therefore the liquid can be injected again. The control device is simple in structure, convenient to operate and firm in sealing, and meanwhile the soft sealing body can float easily.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a drip injection multi-time multi-face sealing control device. Background technique [0002] There are many kinds of drip syringes now, and the sealing of the injection outlet in the dripping funnel is also various. There are solid spherical sealing, air bag sealing, film spherical sealing, and conical sealing. These sealings have different defects respectively. as a solid sphere. Conical sealing; because it is solid, the sealing is not dense, and the processing precision of the plastic parts is not high, the sealing accuracy is lower, the phenomenon of air leakage and sealing is not good, the air bag sealing problem is even bigger, and the air bag explodes due to heating during disinfection At the same time, the airbag is easy to leak after a long time, and the sealing function will be lost. Even if there is no air, because the airbag is light, when people touch the dr...

AI Technical Summary

Problems solved by technology

Conical sealing; because it is solid, the sealing is not dense, and the processing precision of the plastic parts is not high, the sealing accuracy is lower, the phenomenon of air leakage and sealing is not good, the air bag sealing problem is even bigger, and the air bag explodes due to heating during disinfection At the same time, the airbag is easy to leak after a long time, and the sealing function will be lost. Even if there is no air, because the airbag is light, when people touch the dropping funnel, the airbag will drift at any time during sealing, and it cannot be sealed. The film spherical crown is sealed, although the seal is good. , but it is difficult to get out of the outlet after the suction seal is strong, and there is no way to re-inject, and the phenomenon of backflow of the injection often occurs

In summary, none of the above sealing methods can achieve high-precision sealing, and when re-injecting, the seal can freely leave the water outlet for re-injection

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