Title:
投与装置
Document Type and Number:
Japanese Patent JP7034076
Kind Code:
B2
Abstract:
An administration apparatus including an apparatus body, a syringe portion, a piston portion and an ignition device, wherein the administration apparatus is further provided with a sealing member that is formed of a metal plate-like member, that separates a space in the apparatus body into a first space in which the ignition device is disposed and a second space in which the piston portion is disposed, and that seals a combustion product generated by the ignition device in the first space. A peripheral edge portion of the sealing member is fixed to an inner wall that defines the space in the apparatus body, and the sealing member is deformed by the gunpowder combustion in the ignition device such that a central portion of the sealing member is displaced to a side of the piston portion, to thereby press the piston portion against the plunger using the central portion. With this, the combustion product generated by the gunpowder combustion from acting on the substance is prevented to be administered, and energy for administration is suitably transmitted to the substance to be administered.
Inventors:
Takaya Masumoto
Application Number:
JP2018535709A
Publication Date:
March 11, 2022
Filing Date:
August 22, 2017
Export Citation:
Assignee:
Daicel Corporation
International Classes:
A61M5/303; A61M5/31; A61M5/315
Domestic Patent References:
| JP2016151318A | ||||
| JP2013053654A | ||||
| JP2011067265A | ||||
| JP2004500933A |
Attorney, Agent or Firm:
Hidewa Patent Office
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