Counting device of suction type drug delivery device

Abstract

The invention discloses a counting device of a suction type dosing device. The counting device comprises a shell, a counting module and a display module. The shell comprises a holding part, a middle part and a cover part; the retaining part is arranged on the periphery of the screw cap in a relatively non-rotatable manner, the middle part is detachably connected with the retaining part, and the cover part is arranged at an opening in one end, far away from the screw cap, of the middle part; the counting module is arranged in the inner cavity of the middle part and comprises a switch component and a counting component; the display module is arranged on the cover part, and the signal input end of the display module is in communication connection with the signal output end of the counting module. Only when the retaining part drives the screw cap to rotate along the first direction relative to the bottle body, the switch part controls the counting part to count; and when the retaining part drives the screw cap to rotate along the second direction relative to the bottle body, the counting component does not count, namely, the counting component can accurately complete one-time counting in one-time dosing action. Therefore, the device has the advantages of convenient use, good reliability and high counting accuracy.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a counting device for an inhalation drug delivery device. Background technique [0002] In modern medical technology, the route of administration to patients usually includes several administration methods such as oral administration, inhalation, sublingual administration, external application, rectal administration, and injection. For inhalation administration, because inhalation through the mouth or nose can directly absorb the drug into the blood through the mucous membrane of the mouth or nose, which can bypass the "first-pass" effect of the liver, so for many diseases (the most common is asthma) In terms of the treatment / administration of drugs, oral (or nasal) inhalation is the most preferred method of drug delivery for quick results. Therefore, the inhalation drug delivery device is a research hotspot at the present stage. The existing inhalation drug delivery dev...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of inconvenient use, low counting accuracy and poor referenceability in the counting device of the powder mist inhalation drug delivery device in the prior art.

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