Needleless access port valves

• US 7,867,204 B2
• Filed: 05/04/2006
• Issued: 01/11/2011
• Est. Priority Date: 05/04/2006
• Status: Active Grant

• Current Assignee: B Braun Medical Incorporated (B. Braun Holding GmbH & Co. KG)
• Original Assignee: B Braun Medical Incorporated (B. Braun Holding GmbH & Co. KG)
• Inventors: Peppel, Peter W., Janders, Michael J., Bartholomew, Joel
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): VU, QUYNH-NHU HOANG
• Application Number:
  US11/418,599
• Publication Number:
  US 20070260195A1
• Time in Patent Office: 1,713 Days
• Field of Search: 604/167.03, 604244-247, 604/249, 604/256, 604/323, 604/335, 604/350, 604/533, 604/537, 604/905, 604/213, 251/149.6, 251/149.4, 251/149.1, 251/337
• US Class Current: 604/249
• CPC Class Codes: A61M 2039/262 having a fluid space within the valve remaining the same upon connection and disconnection, i.e. neutral-drawback valve
• CPC Class Codes: A61M 2039/263 where the fluid space within the valve is decreasing upon disconnection
• CPC Class Codes: A61M 39/02 Access sites
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24

Abstract

Needleless access port valves are generally discussed herein with particular discussions extended to needleless access port valves having a stretchable or flexible band. In accordance with aspects of the present invention, the band is held in between a flange section of an inlet connector assembly and a shoulder section of the valve body. A plunger integrally formed with the band is movable inside a nozzle to control fluid flow through the inlet of the valve. When the plunger is urged by a medical implement to open the valve inlet, the band flexes to accommodate the moving plunger.

Claims

1. A needleless access port valve assembly comprising a plunger assembly comprising a continuous band adapted to flex and stretch when urged by a medical implement;

the band, which comprises a length and a cross-sectional circumference of smaller dimension than the length, is compressed only along two opposed surfaces between an inlet connector assembly comprising a port and a valve body comprising a port;

said band integrally formed with a plunger comprising a base;

the band being compressed between a seat on the valve body and a seat on the inlet connector assembly and comprising an arcuate shaped structure having two hollow cavities located between the plunger and the band such that part of the base is exposed at the cavities.

2. The needleless access port valve of claim 1, wherein the cross-sectional circumference comprises a plurality of sides and edges.

3. The needleless access port valve of claim 1, wherein the plunger further comprises an upper surface and a channel originating at the base and extending towards the upper surface.

4. The needleless access port valve of claim 1, wherein the valve body comprises an exterior wall surface and an interior channel wall defining a channel therebetween.

5. The needleless access port valve of claim 1, wherein the band comprises a perimeter with a constant thickness throughout.

6. The needleless access port valve of claim 5, wherein the band has an oblong shape.

7. The needleless access port valve of claim 1, further comprising a flow channel located on an upper surface of the plunger.

8. The needleless access port valve of claim 1, wherein the valve body comprises a groove for mating with the inlet connector assembly.

9. A needleless access port valve assembly comprising a plunger assembly comprising an axially extending plunger and an integrally formed band having a perimeter with a constant thickness throughout, the band being disposed in between an inlet connector assembly comprising an inlet port and a valve body comprising an outlet port;

said inlet connector assembly and said valve body defining a groove and only a portion of said band perimeter with the constant thickness throughout is disposed in said groove and being compressed thereby;

wherein said band and said band perimeter comprise a first length when said plunger is in a first position and a second length, which is longer than the first length, when said plunger is in a second position.

10. The needleless access port valve assembly of claim 9, wherein the band comprises a cross-sectional circumference of smaller dimension than the first length.

11. The needleless access port valve assembly of claim 9, wherein the plunger comprises a channel originating from proximate the band and extending upwardly towards an upper surface.

12. The needleless access port valve assembly of claim 10, wherein the cross-sectional circumference comprises a plurality of sides and edges.

13. The needleless access port valve assembly of claim 9, wherein the plunger assembly comprises at least one hollow cavity located between the plunger and the band perimeter.

14. The needleless access port valve of claim 9, wherein the band has an oblong shape.

15. The needleless access port valve assembly of claim 9, wherein the valve body further comprises a second groove for mating with the inlet connector assembly.

16. A needleless access port valve assembly comprising an inlet connector assembly comprising an inlet port, a plunger assembly means for regulating fluid flow, and a valve body comprising an outlet port, said plunger assembly means comprising an integrally formed plunger comprising a base, spring means for stretching and unstretching having a perimeter, and at least one hollow cavity disposed between the plunger and the spring means, the at least one hollow cavity extending to the base of the plunger, the spring means and perimeter being compressed in between a groove defined by a flange on the inlet connector assembly and a shoulder on the valve body;

wherein the spring means and perimeter flex in response to a force applied on the plunger and are less flexed when said force is removed from said plunger.

17. The needleless access port valve assembly of claim 16, wherein the valve body further comprises a second groove for mating with the inlet connector assembly.

18. The needleless access port valve assembly of claim 16, wherein the flange on the inlet connector assembly comprises a pair of integrally formed beams for further supporting the spring means.

19. The needleless access port valve assembly of claim 16, wherein the perimeter has a constant thickness throughout.

20. The needleless access port valve assembly of claim 19, wherein the spring means has an oblong shape.