Title:
ELECTRIC SYRINGE TO BE USED WITH TWO KINDS OF DENTAL ANESTHETIC SOLUTION-CONTAINING CARTRIDGES
Document Type and Number:
WIPO Patent Application WO/2012/140738
Kind Code:
A1
Abstract:
Provided is an electric syringe to be used with two kinds of dental anesthetic solution-containing cartridges, wherein the cartridge holder is configured so as to be capable of being used with both cartridges containing 1.0 mL and 1.8 mL of anesthetic solution and the syringe is configured so that the rubber plunger stopper of the 1.8 mL cartridge can be pushed with a push rod of the length necessary for pushing the rubber plunger stopper of the 1.0 mL cartridge. The cartridge holder (4) used in the electric syringe to be used with two kinds of dental anesthetic solution-containing cartridges is configured so as to be usable with both a 1.0 mL cartridge (3b) and a 1.8 mL cartridge (3a). The push rod (6) has a 1.0 mL cartridge-setting position and a 1.8 mL cartridge-setting position that is drawn back from said position so that the movement of the push rod ends at the same position for both the 1.0 mL cartridge and the 1.8 mL cartridge, and comprises: a bottomed sleeve (22), which accepts the back end of the push rod when pushed back from the ending position and when the push rod is in the 1.0 mL cartridge-setting position, is not affected by the back end face of the push rod but when the push rod is pushed back to the 1.8 mL cartridge-setting position, is pushed backward by the back end face of the push rod; and a returning spring (23) for moving the sleeve together with the push rod forward during forward movement of the push rod.
Inventors:
TANAKA FUMIO (JP)
HARAGUCHI MITSUHIRO (JP)
KAWASAKI YOSHIHIKO (JP)
SHIBUYA MUTSUMI (JP)
HAYASHI RENJI (JP)
KATO YOSHINORI (JP)
HARAGUCHI MITSUHIRO (JP)
KAWASAKI YOSHIHIKO (JP)
SHIBUYA MUTSUMI (JP)
HAYASHI RENJI (JP)
KATO YOSHINORI (JP)
Application Number:
PCT/JP2011/059089
Publication Date:
October 18, 2012
Filing Date:
April 12, 2011
Export Citation:
Assignee:
SHOWA PHARM CHEM IND (JP)
TANAKA FUMIO (JP)
HARAGUCHI MITSUHIRO (JP)
KAWASAKI YOSHIHIKO (JP)
SHIBUYA MUTSUMI (JP)
HAYASHI RENJI (JP)
KATO YOSHINORI (JP)
TANAKA FUMIO (JP)
HARAGUCHI MITSUHIRO (JP)
KAWASAKI YOSHIHIKO (JP)
SHIBUYA MUTSUMI (JP)
HAYASHI RENJI (JP)
KATO YOSHINORI (JP)
International Classes:
A61M5/20; A61M5/24
Foreign References:
| JP4198435B2 | 2008-12-17 | |||
| JP2006230701A | 2006-09-07 |
Other References:
See also references of EP 2698181A4
Attorney, Agent or Firm:
TSUJII Koichi et al. (JP)
辻居 Koichi (JP)
辻居 Koichi (JP)
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Claims: