Adapter for a syringe

Patent metadata

Field	Value
Publication number	US-9717854-B2
Application number	US-201313796794-A
Country	US
Kind code	B2
Filing date	Mar 12, 2013
Priority date	May 12, 2011
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

An adapter for a syringe includes a base portion having an insertion hole and a flange portion extending laterally outwardly from the base portion. A longitudinal axis of the flange portion extends from a first distal end to an opposing second distal end. A first distance measured from a geometric center of the insertion hole to the first distal end of the flange portion is less than a second distance measured from the geometric center of the insertion hole to the second distal end. The first distance defines a first section of the flange portion and the second distance defines a second section of the flange portion. The first section has a cross-sectional shape that is one of at least slightly concave and at least slightly convex and the second section has a cross-sectional shape that is the other of at least slightly convex and at least slightly concave.

First claim

We claim:

1. An adapter for a syringe comprising:
a base portion having a single opening formed therethrough, the single opening comprising an insertion hole configured to surround and engage at least a portion of a barrel of the syringe; and
a flange portion extending laterally outwardly from the base portion, the flange portion including a first distal end and an opposing second distal end, a longitudinal axis of the flange portion extending from the first distal end to the opposing second distal end, a first distance measured from a geometric center of the insertion hole to the first distal end along the longitudinal axis of the flange portion being less than a second distance measured from the geometric center of the insertion hole to the second distal end along the longitudinal axis of the flange portion, the first distance defining a first section of the flange portion and the second distance defining a second section of the flange portion, the first section having a cross-sectional shape that is one of at least slightly concave and at least slightly convex and the second section having a cross-sectional shape that is the other of at least slightly convex and at least slightly concave,
wherein the adapter is configured to be removably attached to the syringe, and
wherein the base portion extends beyond a bottom surface of the flange portion in a direction generally perpendicular to the longitudinal axis.

2. The adapter according to claim 1 , wherein the first section of the flange portion includes a top surface and an opposing bottom surface and the second section of the flange portion includes a top surface and an opposing bottom surface, the top surface of the first section of the flange portion being at least slightly concave and the top surface of the second section of the flange portion being at least slightly convex.

3. The adapter according to claim 1 , wherein a top surface and the bottom surface of the flange portion have nonlinear cross-sectional shapes.

4. The adapter according to claim 1 , wherein a top surface of the flange portion includes at least one rib that extends generally perpendicularly to the longitudinal axis of the flange portion.

5. The adapter according to claim 1 , wherein the adapter is locked onto the barrel of the syringe by sliding the adapter along the barrel and the rotating the adapter in a first rotational direction with respect to the syringe.

6. The adapter according to claim 1 , wherein at least one projection and at least one ramp portion are configured to hold a flange of the syringe in place when the adapter is locked onto the barrel of the syringe.

7. The adapter according to claim 6 , wherein when the adapter is locked onto the barrel of the syringe, at least a portion of the flange of the syringe is positioned between the ramp portion and a top surface of the base portion.

8. The adapter according to claim 6 , wherein the flange of the syringe is configured to be rotated between the at least one projection and the at least one ramp portion.

9. The adapter according to claim 6 , wherein a top surface of the at least one ramp portion is generally coplanar with a top surface of the flange portion and at least a portion of a bottom surface of the at least one ramp portion extends at an angle of approximately 5-45 degrees with respect to a plane defined by the top surface of the at least one ramp portion.

10. The adapter according to claim 1 , wherein the flange portion includes two spaced-apart projections extending upwardly from a top surface of the base portion and two spaced-apart ramp portions, a flange of the syringe being configures to be rotated between and held in place by the two projections and two ramp portions.

11. An adapter for a syringe comprising:
a base portion including a top surface, an opposing bottom surface and a passageway formed therethrough, the passageway being formed of a positioning hole and an insertion hole laterally adjacent thereto, the insertion hole and the positioning hole having different cross-sectional shapes, the insertion hole being configured to surround and engage at least a flange of a barrel of the syringe; and
a flange portion extending laterally outwardly from the base portion, the flange portion including a top surface and an opposing bottom surface, the top surface of the base portion extending parallel to and spaced between the top and bottom surfaces of the flange portion,
wherein the adapter is configured to be removably attached to the syringe and,
wherein the passageway extends beyond the bottom surface of the flange portion.

12. The adapter according to claim 11 , wherein the top and bottom surfaces of the flange portion have nonlinear cross-sectional shapes.

13. The adapter according to claim 11 , wherein the flange portion has a longitudinal axis extending from a first distal end thereof to an opposing second distal end thereof and the top surface of the flange portion includes at least one rib that extends perpendicularly to the longitudinal axis of the flange portion.

14. The adapter according to claim 11 , further comprising at least one projection extending radially inwardly from the flange portion, wherein the flange of the barrel of the syringe is configured to be held in place by the at least one projection and the top surface of the base portion.

15. The adapter according to claim 14 , wherein a top surface of the at least one projection is coplanar with the top surface of the flange portion and at least a portion of a bottom surface of the at least one projection extends at an angle of approximately 5-45 degrees with respect to a plane defined by the top surface of the at least one projection.

16. The adapter according to claim 11 , further comprising two spaced-apart tabs extending radially inwardly into the insertion hole.

17. The adapter according to claim 11 , wherein the adapter is locked onto the syringe by first inserting the syringe longitudinally into the positioning hole and then moving one of the syringe and the adapter laterally until the flange of the barrel of the syringe is positioned within the insertion hole.

Assignees

• West Pharmaceutical Services Inc

Inventors

• Evans Christopher
• Costello Brian
• Gieda Christopher

Classifications

• A61M2005/3139

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

• A61M5/3137 Primary

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

• A61M5/31 Primary

  Details · CPC title