Needleless access port valves

• US 20070270756A1
• Filed: 05/22/2006
• Published: 11/22/2007
• Est. Priority Date: 05/22/2006
• Status: Abandoned Application

• 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, Kundra, Kristopher
• Application Number:
  US11/438,809
• Publication Number:
  US 20070270756A1
• Time in Patent Office: Days
• US Class Current: 604/167.60
• 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 39/26 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 comprising a piston comprising an integrated gilled sheath. In accordance with aspects of the present invention, the sheath is secured to a valve housing and provides the needed recoil function to return a core from a second position to a first position to close the valve upon removal of a medical implement.

Claims

1. A needleless injection port valve comprising a valve housing defining an interior cavity having an inlet and an outlet, a piston comprising a core and a sheath positioned in the interior cavity of the housing by securing a perimeter section of the sheath in a bore proximate two mating surfaces on the valve housing;

and wherein the sheath comprises a plurality of seals each comprising resilient surface to resilient surface contact.

2. The needleless injection port valve of claim 1, wherein the inlet comprises an inlet nozzle comprising a flange attached to an upper chamber comprising a distally directed taper.

3. The needleless injection port valve of claim 2, where the bore is bounded by the flange and the upper chamber.

4. The needleless injection port valve of claim 1, wherein the plurality of seals comprise each comprise a slit.

5. The needleless injection port valve of claim 1, wherein the valve housing comprises a valve body comprising an hourglass configuration.

6. The needleless injection port valve of claim 1, further comprising a rib attached to both the core and the sheath.

7. The needleless injection port valve of claim 1, wherein the core comprises an upper surface comprising trough.

8. The needleless injection port valve of claim 1, wherein the inlet comprises a Luer taper.

9. The needleless injection port valve of claim 1, wherein the piston is made from at least one of a silicone and a polyisoprene material.

10. The needleless injection port valve of claim 1, wherein the piston is made from a self-lubricating material.

11. A needleless injection port valve comprising a valve housing defining an interior cavity and a piston comprising a core and a sheath surrounding, at least in part, the core positioned in the interior cavity of the housing;

the housing comprises a inlet section comprising an inlet opening, an outlet section comprising an outlet opening, and a body section attached to the inlet section and the outlet section;

the body section having a body upper section, a body center section, and a body lower section all having a respective cross-sectional dimension, and wherein the cross-sectional dimension of the body center section is less than the cross-sectional dimensions of the body upper section and body lower section along a cross-sectional side view of the valve.

12. The needleless injection port valve of claim 11, wherein the sheath comprises a perimeter section, and wherein the perimeter section is compressed between two mating surfaces on the inlet section.

13. The needleless injection port valve of claim 11, wherein the body section is made from a thermoplastic elastomer material.

14. The needleless injection port valve of claim 11, further comprising a plurality of slits positioned on the sheath.

15. The needleless injection port valve of claim 11, further comprising a plurality of ribs connected to both the core and the sheath.

16. The needleless injection port valve of claim 11, wherein the inlet section defines a bore and wherein the sheath is attached to the bore.

17. A needleless injection port valve comprising a valve housing defining an interior cavity and a piston comprising a core and a sheath attached to a lower section of the core and extending proximally along at least a portion of the core;

the piston being positioned in the interior cavity by wedging a perimeter section of the sheath in between a shoulder defined by an inlet nozzle section and a shoulder defined by an upper housing chamber;

wherein the piston comprises at least one gill located on the sheath;

said gill having a first configuration corresponding to a first valve position in which a first resilient surface contacts a second resilient surface and having a second configuration corresponding to a second valve position in which the first resilient surface is spaced apart from the second resilient surface.

18. The needleless injection port valve of claim 17, wherein the piston is made from at least one of a silicone and a polyisoprene material.

19. The needleless injection port valve of claim 17, wherein the valve housing comprises a body section having a hourglass configuration.

20. The needleless injection port valve of claim 17, wherein the at least one gill provides a fluid flow channel when the piston is in the second valve position.