Title:
ACCURATE DOSE CONTROL MECHANISMS AND DRUG DELIVERY SYRINGES
Document Type and Number:
Japanese Patent JP2018061832
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide drug delivery syringes which incorporate accurate dose control mechanisms.SOLUTION: A dose control mechanism 10 for a syringe comprises a plunger 14, a housing 20, and a screw 30. The plunger has a coarse pitch screw on its exterior surface. The housing has a corresponding coarse pitch guide along the interior surface of the housing. The screw has a fine pitch screw which interfaces with a fine pitch nut of an adapter 18. The plunger has an internal annular space within which the screw at least partially resides. An accurate dose drug delivery syringe includes such a dose control mechanism, a barrel, a plunger seal, and a barrel adapter assembly having a barrel tip and a needle. The syringe may be a fill-at-time-of-use syringe, a pre-filled syringe, or a safety syringe having integrated needle retraction or needle sheathing safety features, or a combination thereof.SELECTED DRAWING: Figure 1A
Inventors:
GAUTAM N SHETTY
LOU CASTAGNA
LOU CASTAGNA
Application Number:
JP2017160466A
Publication Date:
April 19, 2018
Filing Date:
August 23, 2017
Export Citation:
Assignee:
UNL HOLDINGS LLC
International Classes:
A61M5/315; A61M5/31
Domestic Patent References:
| JP2015500095A | 2015-01-05 | |||
| JP2002501790A | 2002-01-22 | |||
| JPH09225031A | 1997-09-02 |
Foreign References:
| US6221053B1 | 2001-04-24 | |||
| WO2011068531A1 | 2011-06-09 |
Attorney, Agent or Firm:
Ikeda adult
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi