Spraying device

Patent metadata

Field	Value
Publication number	US-9526841-B2
Application number	US-201113807592-A
Country	US
Kind code	B2
Filing date	Jun 28, 2011
Priority date	Jun 30, 2010
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

An administration device can discharge a prescribed, equal amount of medicine a number of times by spraying. A spraying device includes a barrel; a gasket provided slidably movable in liquid-tight manner in the barrel; a rod coupled to a base end of the gasket; and a regulating member provided on the barrel, having a projection that can slidably fit with the guide groove. The guide groove includes at least first and second continuous administering grooves. The second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of the first administering portion, and a second administering portion extending from the transitional portion to a base end along the longitudinal direction. An energizing protrusion engageable with the projection is provided at a boundary between the transitional portion and the second administering portion.

First claim

The invention claimed is:

1. A spraying device for spraying liquid, comprising:
a hollow barrel having a spray nozzle mounting portion formed at a tip end and a flange formed at a base end;
a gasket provided slidably movable in liquid-tight manner in said barrel;
a rod coupled to a base end of the gasket;
a guide groove provided on said rod; and
a regulating member, provided on said barrel, having an opening allowing passage of the rod formed at the center, and having a projection projecting from an edge of the opening to the center to be slidably fit with said guide groove, wherein
said guide groove includes at least a first administering groove and a second administering groove provided continuous from said first administering groove;
said first administering groove is configured to include a priming portion and a first administering portion extending from said priming portion to a base end along the longitudinal direction;
said second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said first administering portion, and a second administering portion extending from the transitional portion to the base end along the longitudinal direction,
an energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said second administering portion, said energizing protrusion extending in two directions at the boundary to define a substantially right angle member,
a minimum radial extent of the regulating member is less than an internal radius of the hollow barrel, and
the rod is configured to be rotatable between the first and second administering portions.

2. The spraying device according to claim 1 , wherein
the priming portion is a groove extending in the longitudinal direction, a groove extending in a circumferential direction, or an L-shaped groove having a tip end side extending in the longitudinal direction and a base end side extending in the circumferential direction.

3. The spraying device according to claim 1 , wherein
an energizing protrusion engageable with said projection is provided at a boundary between said priming portion and said first administering portion.

4. The spraying device according to claim 1 , wherein a rotation preventing protrusion engageable with said projection is further provided at a boundary between said first and second administering grooves.

5. The spraying device according to claim 1 , wherein
said guide groove further includes a third administering groove, said third administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said second administering portion, and a third administering portion extending from the transitional portion to the base end along the longitudinal direction; and
a third energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said third administering portion.

6. A spraying device for spraying liquid, comprising:
a hollow barrel having a spray nozzle mounting portion formed at a tip end and a flange formed at a base end;
a gasket provided slidably movable in liquid-tight manner in said barrel;
a rod coupled to a base end of the gasket;
a guide groove provided on said rod; and
a regulating member, provided on said barrel, having an opening allowing passage of the rod formed at the center, and having a projection projecting from an edge of the opening to the center to be slidably fit with said guide groove, wherein
said guide groove includes at least a first administering groove and a second administering groove provided continuous from said first administering groove,
said first administering groove is configured to include a priming portion and a first administering portion extending from said priming portion to a base end along the longitudinal direction,
said second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said first administering portion, and a second administering portion extending from the transitional portion to the base end along the longitudinal direction,
an energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said second administering portion,
said energizing protrusion extending in two directions at the boundary to define a substantially right angle member,
said flange has a housing portion capable of accommodating said regulating member, and said regulating member is housed in said housing portion, and
the rod is configured to be rotatable between the first and second administering portions.

7. A spraying device for spraying liquid, comprising:
a hollow barrel having a spray nozzle mounting portion formed at a tip end and a flange formed at a base end;
a gasket provided slidably movable in liquid-tight manner in said barrel;
a rod coupled to a base end of the gasket;
a guide groove provided on said rod; and
a regulating member, provided on said barrel, having an opening allowing passage of the rod formed at the center, and having a projection projecting from an edge of the opening to the center to be slidably fit with said guide groove, wherein
said guide groove includes at least a first administering groove and a second administering groove provided continuous from said first administering groove;
said first administering groove is configured to include a priming portion and a first administering portion extending from said priming portion to a base end along the longitudinal direction;
said second administering groove is configured to include a transitional portion extending in the circumferential direction with a groove wall on the base end side aligned with the base end of said first administering portion, and a second administering portion extending from the transitional portion to the base end along the longitudinal direction,
an energizing protrusion engageable with said projection is provided at a boundary between said transitional portion and said second administering portion,
said energizing protrusion extending in two directions at the boundary to define a substantially right angle member,
a minimum radial extent of the regulating member is less than an internal radius of the hollow barrel, and
said regulating member further has, at a tip end, a housing portion capable of accommodating the flange therein, and a fixing portion engageable with an outer wall of the barrel, and is attached by accommodating a lower end of the barrel.

8. The spraying device according to claim 1 , wherein
a spray nozzle is mounted on said spray nozzle mounting portion.

9. The spraying device according to claim 8 , wherein
said spray nozzle contains powdered formulation.

10. The spraying device according to claim 1 , further having a medicament container adapter allowing communication between the barrel and another medicament container, detachably provided to cover the barrel.

11. The spraying device according to claim 2 , wherein
an energizing protrusion engageable with said projection is provided at a boundary between said priming portion and said first administering portion.

12. The spraying device according to claim 2 , wherein a rotation preventing protrusion engageable with said projection is further provided at a boundary between said first and second administering grooves.

13.

Assignees

• Kubo Tomohiko
• Hirobe Teruhisa
• Nipro Corp

Inventors

• Kubo Tomohiko
• Hirobe Teruhisa

Classifications

• A61M5/3155 Primary

  by rotational movement of dose setting member, e.g. during setting or filling of a syringe · CPC title

• A61M3/0262 Primary

  manually, e.g. by squeezing a bulb · CPC title

• A61M2005/3139

  Finger grips not integrally formed with the syringe barrel, e.g. using adapter with finger grips · CPC title

• A61M5/31595

  Pre-defined multi-dose administration by repeated overcoming of means blocking the free advancing movement of piston rod, e.g. by tearing or de-blocking · CPC title

• A61M11/08

  Pocket atomisers of the injector type {(aerosol cans A61M15/009)} · CPC title