Administration instrument for medical use

Patent metadata

Field	Value
Publication number	US-2019381253-A1
Application number	US-201916555095-A
Country	US
Kind code	A1
Filing date	Aug 29, 2019
Priority date	Dec 13, 2001
Publication date	Dec 19, 2019
Grant date	—

Abstract

An administration instrument includes an injection button which can be pressed at an angle that is not parallel to a needle with respect to a direction in which the needle is inserted into skin. As a result, it is possible to prevent a force of pressing the injection button from being transmitted in the direction in which the needle is inserted into the skin deeper than initial insertion of the needle, thereby achieving an administration under a stable state.

First claim

1 - 7 . (canceled)

8 . An administration instrument for medical use ( 66 ), detachably mounting a cylindrical drug solution cartridge ( 52 ), and configured to inject a drug solution ( 71 ) filled in said drug solution cartridge ( 52 ) out of a needle ( 51 ) attached at a tip of said drug solution cartridge ( 52 ), the instrument comprising:
an administration instrument body for medical use ( 66 ) with said drug solution cartridge ( 52 ) detachably mounted; an administration button ( 54 ) for injecting said drug solution ( 71 ); and a driving mechanism ( 57 , 59 , 60 ) for driving a plunger ( 53 ) which pushes said drug solution ( 71 ) within said drug solution cartridge ( 52 ) when activated by said administration button ( 54 ), wherein said administration instrument body for medical use ( 66 ) includes a distal end where said needle ( 51 ) is arranged and a proximal end where said administration button is arranged, wherein a lid ( 67 ) is provided on a side surface of said administration instrument body for medical use, one end of said lid being pivotally supported by said administration instrument body for medical use at the distal end side and an opposite end of said lid being freely retractable at the proximal end, wherein said drug solution cartridge ( 52 ) is inserted in a longitudinal direction from the side where said needle ( 51 ) is attached while said lid ( 67 ) is open, and said lid ( 67 ) is subsequently rotated and closed, whereby said drug solution cartridge ( 52 ) is mounted such that said needle is attachable, with an attachment portion of said needle ( 51 ) of said drug solution cartridge ( 52 ) being arranged at an end surface of said administration instrument body for medical use ( 66 ).

Assignees

• Phc Holdings Corp

Inventors

• Baba Tokumi
• Ishikawa Tokumi
• Matsuda Kouichi

Classifications

• A61M2005/3132

  having flow passages for injection agents at the distal end of the barrel to bypass a sealing stopper after its displacement to this end due to internal pressure increase · CPC title

• A61M2205/583

  by visual feedback · CPC title

• A61M2005/3123

  having air entrapping or venting means, e.g. purging channels in pistons · CPC title

• A61M5/31556

  Accuracy improving means · CPC title

• A61M2005/2407

  from the rear · CPC title