Method and device for automatically sealing two contact surfaces twice for drip injection

Abstract

The invention discloses a method and a device for automatically sealing two contact surfaces twice for a drip injection. The device comprises a drip injector (1), and is characterized by further comprising a soft sealing body (3) arranged in a dripping bucket (2) of the drip injector (1). The device has the following advantages that when the injection is almost injected, the lower outer surface of a thin-wall soft bag seals the inner wall of the water outlet of the dripping bucket; simultaneously, the injection in the thin-wall soft bag flows out from the water inlet-outlet of the soft sealing body under the gravity action of a floating body, and the thin-wall soft bag performs secondary two-surface sealing on the end surface of the water outlet of the dripping bucket; the sealing accuracy is high, and a gas or a liquid can hardly flow in a transparent tube outside the water outlet of the dripping bucket; simultaneously, after replacement, the injection flows in the dripping bucket again, and the soft sealing body is very easy to float under the action of buoyancy; and in this way, the injection can be injected again. The control device is simple in structure, convenient in operation, and firm in sealing; and simultaneously, the soft sealing body is easy to float.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method and a device for automatically sealing two contact surfaces of dripping injection twice. Background technique [0002] Present drip syringes are of a great variety, and the closure of the injection outlet in the drip funnel is also various, such as solid spherical closure, airbag closure, film spherical crown closure, and conical closure. These closures have different defects respectively, such as Solid spherical. 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...

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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