Title:
DRUG INJECTION CONTROL DEVICE WITH CARTRIDGE DRUG RELEASE STRUCTURE THROUGH SCREW-TYPE COUPLING BETWEEN PISTON ROD AND ROD GUIDE
Document Type and Number:
WIPO Patent Application WO/2022/098043
Kind Code:
A1
Abstract:
A drug injection control device according to the present invention enables the rotation of a rod guide and a linear movement structure of a piston rod interlocking with the rod guide so that a predetermined drug set through a dose dial can be stably injected. While a drug injection dose according to the intention of a user is set in advance through an injection amount setting module which is rotatably moved while interlocking with a dose dial in a housing and which stores a torsional moment in a torsion spring to set an amount of the drug to be injected, during a process of enabling a drug discharge module that is coupled to the injection amount setting module to be switchable according to an operation of an injection button arranged on the upper end of the drug injection control device, the rod guide is fastened inside the piston rod through a screw rotational engagement through a reset tube that is coupled to the injection button to be interlocked, so that a lower linear movement of the piston rod is enabled through the rotation of the rod guide. Thus, a stable cartridge drug release structure can be implemented through a screw-type coupling between the piston rod and the rod guide.
Inventors:
CHO HEE MIN (KR)
YUN JONG DEOK (KR)
KIM JAE CHEON (KR)
KANG KI YOON (KR)
SON HYEONG CHAN (KR)
YOON SEON HYE (KR)
YUN JONG DEOK (KR)
KIM JAE CHEON (KR)
KANG KI YOON (KR)
SON HYEONG CHAN (KR)
YOON SEON HYE (KR)
Application Number:
PCT/KR2021/015677
Publication Date:
May 12, 2022
Filing Date:
November 02, 2021
Export Citation:
Assignee:
POONGLIM PHARMATECH INC (KR)
International Classes:
A61M5/315; A61M5/20
Foreign References:
| KR20010031224A | 2001-04-16 | |||
| KR20070065878A | 2007-06-25 | |||
| KR20110014578A | 2011-02-11 | |||
| KR20120129923A | 2012-11-28 | |||
| KR20130118969A | 2013-10-30 | |||
| KR102211181B1 | 2021-02-03 |
Attorney, Agent or Firm:
DAHAI INTERNATIONAL PATENT & LAW FIRM (KR)
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