Rotatable finger flange for a syringe

Patent metadata

Field	Value
Publication number	US-10064997-B2
Application number	US-201414510791-A
Country	US
Kind code	B2
Filing date	Oct 9, 2014
Priority date	Oct 9, 2014
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A conventional syringe defines a longitudinal axis and includes a syringe barrel having a syringe barrel flange laterally extending from an open proximal end of the syringe barrel and a plunger advanceable into the syringe barrel. A rotatable finger flange for such a syringe includes identical first and second flange components, each having an attachment member configured to releasably engage the syringe barrel flange and/or the other flange component, and a flange member laterally extending therefrom. The first and second flange component are engageable and rotatable relative to one another about the longitudinal axis between a non-use position, wherein the first flange member overlies the second flange member to reduce the finger flange footprint, and a use position, wherein the first flange member and the second flange member are angularly spaced apart from one another to provide a finger flange having a greater lateral extent than the syringe barrel flange.

First claim

We claim:

1. A rotatable finger flange for use with a syringe defining a longitudinal axis and including a syringe barrel having a syringe barrel flange laterally extending proximate to an open proximal end of the syringe barrel and a syringe plunger for advancement into the syringe barrel through the open proximal end, the finger flange comprising:
a first flange component having a first attachment member configured to releasably engage the syringe barrel flange and having a first aperture extending therethrough for receiving the syringe therethrough, and a first flange member laterally extending from said first attachment member; and
a second flange component having a second attachment member configured to releasably engage the first attachment member and having a second aperture extending therethrough for receiving the syringe therethrough, and a second flange member laterally extending from said second attachment member;
wherein the first flange component and the second flange component are engageable and rotatable relative to one another about the longitudinal axis between a non-use position, wherein (i) the first aperture overlies the second aperture along the longitudinal axis and (ii) the first flange member overlies the second flange member along the longitudinal axis, and a use position, wherein (i) the first aperture overlies the second aperture along the longitudinal axis and (ii) the first flange member and the second flange member are angularly spaced apart from one another to provide a finger flange having a greater lateral extent than the syringe barrel flange.

2. The rotatable finger flange of claim 1 , wherein the first flange member is angularly spaced approximately 180 degrees from the second flange member in the use position.

3. The rotatable finger flange of claim 1 , wherein the first attachment member of the first flange component comprises a first base defining the first aperture and having a first syringe retention ring extending upwardly from said first base and defining an open upper end, wherein said first syringe retention ring is dimensioned to releasably secure the syringe barrel flange therein.

4. The rotatable finger flange of claim 3 , wherein the first syringe retention ring comprises a plurality of angularly spaced radially inwardly extending tabs at the open upper end thereof, wherein said radially inwardly extending tabs are configured to flex radially outwardly and snap over the syringe barrel flange upon receiving the syringe barrel flange into the first syringe retention ring, to, in turn, releasably secure the syringe barrel flange within the first syringe retention ring.

5. The rotatable finger flange of claim 3 , wherein the first attachment member of the first flange component further comprises a first annular projection extending downwardly from the first aperture and having a first diameter dimensioned to slidably engage the syringe barrel.

6. The rotatable finger flange of claim 5 , wherein the first attachment member of the first flange component further comprises a pair of diametrically opposed arcuate projections extending downwardly from the first base, concentric with, and spaced from, the first annular projection, thereby defining a pair of diametrically opposed arcuate channels therebetween.

7. The rotatable finger flange of claim 6 , wherein the arcuate projections define respective inner surfaces facing toward the first annular projection, said inner surfaces having a generally concave contour.

8. The rotatable finger flange of claim 6 , wherein the second attachment member of the second flange component comprises a second base defining the second aperture and having a second syringe retention ring extending upwardly from said second base and defining an open upper end.

9. The rotatable finger flange of claim 8 , wherein the second syringe retention ring comprises a plurality of angularly spaced radially outwardly extending tabs at the open upper end thereof, wherein said radially outwardly extending tabs of the second attachment member are configured to mate with the arcuate channels of the first attachment member.

10. The rotatable finger flange of claim 5 , wherein the first annular projection is a first, inner annular projection, and the first attachment member of the first flange component further comprises a first, outer annular projection extending downwardly from the first base, concentric with, and spaced from, the first, inner annular projection, thereby defining an annular channel therebetween.

11. The rotatable finger flange of claim 10 , wherein the first, outer annular projection comprises a plurality of angularly spaced cutouts along an inner surface thereof and a plurality of angularly spaced tabs, extending radially inwardly from the inner surface, wherein the cutouts and the radially inwardly extending tabs of the first, outer annular projection alternate around a circumference of the first, outer annular projection, and wherein a slot is defined between the first base and each respective radially inwardly extending tab of the first, outer annular projection.

12. The rotatable finger flange of claim 11 , wherein the second attachment member of the second flange component comprises a second base defining the second aperture and having a second syringe retention ring extending upwardly from said second base and defining an open upper end and the second syringe retention ring comprises a plurality of angularly spaced radially outwardly extending tabs at the open upper end thereof, wherein said radially outwardly extending tabs of the second attachment member are configured to mate with the annular channel of the first attachment member.

13. The rotatable finger flange of claim 12 , wherein the radially outwardly extending tabs of the second syringe retention ring of the second flange member are configured to advance through the cutouts of the first, outer annular projection, and the first flange component and the second flange component are thereafter rotatable with respect to one another about the longitudinal axis, such that the radially outwardly extending tabs of the second syringe retention ring of the second flange member enter into the slots between the first base and each respective radially inwardly extending tab of the first, outer annular projection, to, in turn, establish a rotating connection.

14. A rotatable finger flange for use with a syringe defining a longitudinal axis and including a syringe barrel having a syringe barrel flange laterally extending proximate to an open proximal end of the syringe barrel and a syringe plunger for advancement into the syringe barrel through the open proximal end, the finger flange comprising:
a first flange component having a first attachment member configured to releasably engage the syringe barrel flange and having a first aperture extending therethrough for receiving the syringe therethrough, and a first flange member laterally extending from said first attachment member; and
a second flange component having a second attachment member configured to releasably engage the first attachment member and having a second aperture extending therethrough for receiving the syringe therethrough, and a second flange member laterally extending from said second attachment member;
wherein the first flange component and the second flange component are engageable and rotatable relative to one another about the longitudinal axis between a non-use position, wherein the first flange member overlies the second flange member, and a use position, wherein the first flange member and the second flange member are angularly spaced apart from one another to pr

Assignees

• West Pharmaceutical Services Inc

Inventors

• Evans Christopher
• Costello Brian
• Gieda Christopher
• Protasiewicz Raymond

Classifications

• A61M5/3137 Primary

  Specially designed finger grip means, e.g. for easy manipulation of the syringe rod · CPC title

• A61M2005/3139

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