US 2003/0197024 A1 · Double-barreled syringe with detachable locking mixing tip

Abstract

A double-barreled syringe is provided which includes a mixing tip which is detachable after the tip is locked to the syringe body, so that the tip may be replaced by a locking cap. Locking occurs when a neck extending from the body between two shoulders is inserted into a bore in the tip (or, alternatively, the cap) and the tip is rotated so that two symmetrically opposed tabs attached to the tip are each received within a recess determined by a shoulder and a locking rib attached to the shoulder, and two diametrically opposed detents extending from the neck are each received within a recess in the bore surface.

Drawings

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Drawings

Claims20

Dependent claims

A syringe for dispensing two viscous materials as an admixture, comprising:

an integrally molded housing having a first and a second barrel symmetrically opposed along a center line, the barrels are bounded at a discharge end and at an inlet end, have a generally cylindrical neck extending from and symmetrically disposed at the discharge end along the center line, the neck including first and second outlet passages in fluid communication, respectively, with the first and second barrels, an exterior circumferential surface defining the shape of the barrels, and a gripping member disposed at the inlet end of the housing;
a first mating assembly having opposed first and second locking ribs symmetrically disposed with respect to said neck and rigidly attached to the bounded discharge end, the first and second locking ribs having at least a portion aligning with the exterior circumferential surface of the two barrels, and wherein the first mating assembly is configured to receive a mixing tip or a locking closure cap;
wherein the mixing tip has an inlet, an outlet, a generally cylindrical bore defined by a circumferential surface adapted to closely receive said neck, and a second mating assembly having opposed generally planar first and second locking tabs symmetrically disposed with respect to the bore, the two mating assemblies conjoining when the neck is inserted into the mixing tip bore in a relative orientation, and wherein the two mating assemblies interlock when the mixing tip rotates in a first direction and the locking tabs slide under the first and the second locking ribs until a stop is achieved, the two mating assemblies are detachable when the mixing tip is rotated in an opposite direction;
and
wherein the mixing tip further including a static mixing element having a plurality of intertwined sections disposed within the cylindrical bore of the mixing tip for mixing the two viscous materials as the two viscous materials are dispensed from the first and the second barrels.

2 more elements

A syringe for mixing and administering a first and a second content, the syringe comprising:

an integrally molded body portion with two syringe barrels having external circumferential surfaces opposed along a syringe centerline, each barrel having distal and proximal ends;
the distal end of each barrel is closed and has an attached locking rib for gripping a mixer, the locking ribs each comprising a first portion which aligns with the external circumferential surface of the corresponding barrel and a second portion which is generally perpendicular to the first portion and which has a face, said proximal end of the barrels includes a gripping member for gripping the syringe during use thereof and an inlet for receiving a plunger;
an outlet neck at the closed distal end symmetrically disposed along the center contact line and equally spaced between the locking ribs;
wherein said outlet neck is in fluid communication with the two barrels;
wherein the mixer includes an inlet, an outlet, and a bore defined by a circumferential surface adapted to closely receive the outlet neck;
the mixer further including a mating assembly which comprises a pair of abutting wall members and a pair of locking tabs, wherein the abutting wall members are configured to abut against the face on the second portion of each of the locking ribs for stopping a relative orientation between the mixer and the outlet neck, and wherein the locking tabs are configured to frictionally engage an underside of the second portion of the locking rib;
and
wherein the mixer further includes a series of intertwined screws in frictional engagement with the bore.

5 more elements

A syringe for dispensing two viscous materials as an admixture comprising:

an integrally molded housing having juxtaposed first and second generally cylindrical barrels each having a generally cylindrical bore, the barrels are bounded at a discharge end and are positioned side-by-side along a syringe centerline,
a generally cylindrical neck extending from and symmetrically disposed at the discharge end along the syringe centerline, the neck including first and second outlet passages in fluid communication, respectively, with the first and second barrels,
an exterior circumferential surface defining the shape of the barrels, and a gripping member disposed at a proximal end of the housing for gripping the syringe during operation thereof;
a first mating assembly having opposed first and second locking ribs symmetrically disposed with respect to said neck and rigidly attached to the bounded discharge end, the first and second locking ribs having at least a portion aligning with the exterior circumferential surface of the two barrels, and wherein the first mating assembly is configured to receive a mixing tip or a locking closure cap;
a unitary construction double-plunger having juxtaposed first and second plungers, the first and second plungers are received within the generally cylindrical bores of the generally cylindrical barrels and move from a proximal position to a distal position within the first and second generally cylindrical barrels to dispense the two viscous materials;
wherein the mixing tip has an inlet, an outlet, a generally cylindrical bore defined by a circumferential surface adapted to closely receive said neck, and a second mating assembly having opposed generally planar first and second locking tabs symmetrically disposed with respect to the bore, the two mating assemblies conjoining when the neck is inserted into the mixing tip bore in a relative orientation, and wherein the two mating assemblies interlock when the mixing tip rotates in a first direction and the locking tabs slide under the first and the second locking ribs, the two mating assemblies are detachable when the mixing tip is rotated in an opposite direction;
and
wherein the mixing tip further including a static mixing element having a plurality of intertwined sections disposed within the cylindrical bore for mixing the two viscous materials as the two viscous materials are dispensed from the first and the second barrels.

5 more elements

Dependencies are inferred from the claim text.

Description5,629 words

Summary1,857 words

#1. Field of the Invention

#The present invention relates to multiple-barreled devices for mixing together and dispensing viscous substances. More particularly, the invention relates to a double-barreled syringe having a double-barreled plunger of unitary construction for dispensing an admixture formed when two gels stored in the barrels are simultaneously discharged into a mixing tip having a five section static mixing element. The tip, which interlocks with the syringe body, is detachable and may be replaced by a locking closure cap to prevent leakage when the syringe is not in use. The locking closure cap preferably has a liner which mitigates undesirable leakage during transport and storage.

#2. Description of the Related Art

Brief description of the drawings23 figures

#FIG. 1 is an exploded perspective view of a double-barreled syringe according to the invention, including a double-plunger assembly, two pistons, a double-barrel assembly, a static mixing element, a detachable locking mixing tip, and alternatively, a detachable locking cap;

#FIG. 2 is a discharge end perspective view of the FIG. 1 double-barrel assembly, including two shoulders, a neck with two outlet passages, and a mating assembly with two diametrically opposed detents and two symmetrically disposed locking ribs for engaging and interlocking with the mixing tip or cap;

#FIG. 3 is an inlet end perspective view of the FIG. 1 mixing tip, including a mating assembly, having two locking tabs, which engages and interlocks with the FIG. 2 mating assembly;

Detailed description3,221 words

#While the present invention is open to various modifications and alternative constructions, the preferred embodiment shown in the drawings will be described herein in detail. It is to be understood, however, there is no intention to limit the invention to the particular form disclosed. On the contrary, it is intended that the invention cover all modifications, equivalences and alternative constructions falling within the spirit and scope of the invention as expressed in the appended claims.

#The invention relates to an article of manufacture which is primarily intended for storing and dispensing gels which are components of an admixture and which need to be kept separate until the admixture is formed. However, the invention is not limited to particular types of material to be stored and dispensed, and can be used for storing and dispensing any material that can be placed within a syringe barrel and effectively admixed by a static mixing tip.

#Where used herein, the word “attached” means that the two parts referred to (e.g., a locking rib and a shoulder or a plunger end-piece and a piston) are either molded in a single piece, or are glued or force-fitted together. However, other forms of attachment may be suitable, consistent with simplicity of manufacture and reliability of operation. Where used herein, the word “connected” means that the two parts referred to (viz., the two mating assemblies) can be easily separated after being joined together in an interlocking combination.

Facts

Application

10/441,825Filed 19 May 2003

Priority

12 Oct 1999

Published

23 Oct 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B05C 17/00506
Details of the outlet element: means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
A61C 5/64
Applicators, e.g. syringes or guns: for multi-component compositions
B05C 17/00516
Details of the outlet element: shape or geometry of the outlet orifice or the outlet element
B05C 17/0052
For discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using…

Family

Application09/581,344Continuation · filed 9 Jun 2000

Application09/581,344A 371 of international · filed 9 Jun 2000

Application10/155,537Continuation · filed 23 May 2002

Application10/441,825Continuation · filed 19 May 2003

US 2002/0145007 A1Published application

US 6,394,314 B1Related patent

US 6,564,972 B2Related patent

US 6,698,622 B2Related patent

US 2003/0197024 A1This patent

From the US filing history. Foreign family members aren’t listed.

Double-barreled syringe with detachable locking mixing tip

Life of this patent

Double-barreled syringe with detachable locking mixing tip

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims20

Description5,629 words

Drawings

Classification8 codes

Life of this patent

Description5,629 words