Medical valve and method of use

• US 7,722,575 B2
• Filed: 05/03/2006
• Issued: 05/25/2010
• Est. Priority Date: 12/18/1991
• Status: Expired due to Fees

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: Lopez, George A.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): BERDICHEVSKY, AARTI
• Application Number:
  US11/417,452
• Publication Number:
  US 20060206058A1
• Time in Patent Office: 1,483 Days
• Field of Search: 604/246, 604/249
• US Class Current: 604/249
• CPC Class Codes: A61J 2200/10 Coring prevention means, e.g. for plug or septum piecing members
• 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 2039/267 having a sealing sleeve around a tubular or solid stem portion of the connector
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• 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
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: F21K 2/00 Non-electric light sources using luminescence using excitation by radioactivity G21H3/02, H01J65/06, H01J65/08; using excitation by an external electromagnetic field or by external corpuscular radiation H01J65/04; Light sources using electrochemiluminescence
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

A closed system, needleless valve device includes a generally tubular body defining an internal cavity. On the proximal end of the body there is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The distal end of the body has a generally tubular skirt. The valve also includes a hollow spike having a closed tip. The spike includes at least one longitudinal 18-gauge hole located distal the tip, and is seated inside the cavity such that the tip is below the proximal end of the body. An annular support cuff is connected to the spike which seals off a portion of the cavity of the body such that an upper cavity containing the tip is defined. The valve also includes a plastic, resilient silicone seal which fills the upper cavity and opening and covers the tip of the spike so as to present a flush surface. An adaptor enables the valve to be attached to a resealable container.

Claims

1. A medical connector for controlling the flow of fluid between a first medical implement and a second medical implement, the connector comprising:

a housing member comprising an opening adapted at its proximal end to receive a first medical implement and a wall structure defining an internal cavity, the cavity comprising a neck portion in fluid communication with the opening and a main portion distal the neck portion with a larger internal diameter than the neck portion;

a flexible element positioned in the cavity, the flexible element movable between a first position in which the flexible element obstructs fluid flow through the housing member and a second position in which fluid flow is facilitated through the housing member, the flexible element comprising a proximal end, a distal end, and a flexible wall with an inner surface and an outer surface, the flexible element in the first position being positioned to facilitate antiseptic swabbing of an outer surface of the proximal end thereof and comprising a first external diameter near the opening, a second external diameter in the neck portion, and a third external diameter in the main portion, the second external diameter being smaller than the first external diameter and the third external diameter, the flexible element in the first position further comprising a first internal diameter in the main portion, a second internal diameter in the main portion distal the first internal diameter, and a third internal diameter in the main portion distal the second internal diameter, the second internal diameter in the main portion being smaller than the first and third internal diameters in the main portion; and

a rigid element positioned inside the cavity and configured to act as a fluid conduit through at least a portion of the housing member.

2. The connector of claim 1, wherein the flexible wall of the flexible element defines an internal cavity and the proximal end of the flexible element further comprises an orifice extending from the outer surface of the proximal end to the internal cavity.

3. The connector of claim 2, wherein the shape of the proximal end of the flexible element is adapted to facilitate closure of the orifice when the flexible element is in the first position.

4. The connector of claim 1, wherein the proximal end of the flexible element has a generally circular cross-section when the flexible element is in the first position.

5. The connector of claim 2, wherein the proximal end of the flexible element has a generally circular cross-section when the flexible element is in the first position.

6. The connector of claim 1, wherein the cross-sectional widths of the neck portion and main portions of the housing member are diameters spanning substantially circular cross-sections of the internal cavity.

7. The connector of claim 1, wherein at least a portion of the housing member in a region of the internal cavity between the neck portion and the main portion has a tapered interior surface.

8. The connector of claim 1, wherein the connector provides substantially linear fluid flow from the first medical implement through the connector to the second medical implement.

9. The connector of claim 2, wherein the orifice is made before the flexible element is used to transfer fluid therethrough.

10. The connector of claim 1, wherein at least a portion of the flexible element is corrugated.

11. The connector of claim 1, wherein at least a portion of an outer surface of the flexible element is an imperforate bellows.

12. The connector of claim 1, wherein the flexible element moves between the first and second positions in an accordion-like fashion.

13. The connector of claim 1, wherein the flexible element comprises silicone rubber.

14. The connector of claim 1, wherein the proximal end of the flexible element at or near the proximal end of the housing member in the first position fills essentially completely the opening in the proximal end of the housing member in a horizontal cross-sectional dimension.

15. The connector of claim 1, wherein the rigid element facilitates a flow of fluid in a distal direction from the inside of the flexible element to a region outside of the flexible element.

16. The connector of claim 1, wherein the rigid element assists in supporting the flexible element within the internal cavity of the housing member.

17. The connector of claim 1, wherein the rigid element assists in centering the flexible element within the internal cavity of the housing member.

18. The connector of claim 1, wherein a proximal end of rigid element includes a pointed tip.

19. The connector of claim 18, wherein the pointed tip of the rigid element penetrates the flexible element when the flexible element is in the second position.

20. The connector of claim 1, wherein the rigid element is tapered.

21. A medical connector for controlling the flow of fluid between a first medical implement and a second medical implement, the connector comprising:

a housing member comprising an opening adapted at its proximal end to receive a first medical implement and a wall structure defining an internal cavity, the cavity comprising a neck portion in fluid communication with the opening and a main portion distal the neck portion with a larger internal diameter than the neck portion;

a flexible element positioned in the cavity, the flexible element movable between a first position in which the flexible element obstructs fluid flow through the housing member and a second position in which fluid flow is facilitated through the housing member, the flexible element comprising a proximal end, a distal end, and a flexible wall with an inner surface and an outer surface, the flexible element in the first position being positioned to facilitate antiseptic swabbing of an outer surface of the proximal end thereof and comprising a first external diameter near the opening, a second external diameter in the neck portion, and a third external diameter in the main portion, the second external diameter being smaller than the first external diameter and the third external diameter, the flexible element in the first position further comprising a first internal diameter in the main portion, a second internal diameter in the main portion distal the first internal diameter, and a third internal diameter in the main portion distal the second internal diameter, the second internal diameter in the main portion being smaller than the first and third internal diameters in the main portion; and

a spike positioned inside the cavity and configured to act as a fluid conduit through at least a portion of the housing member.

22. The connector of claim 21, wherein the flexible wall of the flexible element defines an internal cavity and the proximal end of the flexible element further comprises an orifice extending from the outer surface of the proximal end to the internal cavity.

23. The connector of claim 22, wherein the shape of the proximal end of the flexible element is adapted to facilitate closure of the orifice when the flexible element is in the first position.

24. The connector of claim 21, wherein the proximal end of the flexible element has a generally circular cross-section when the flexible element is in the first position.

25. The connector of claim 22, wherein the proximal end of the flexible element has a generally circular cross-section when the flexible element is in the first position.

26. The connector of claim 21, wherein at least a portion of the housing member in a region of the internal cavity between the neck portion and the main portion has a tapered interior surface.

27. The connector of claim 22, wherein the orifice is made before the flexible element is used to transfer fluid therethrough.

28. The connector of claim 21, wherein at least a portion of the flexible element is corrugated.

29. The connector of claim 21, wherein the flexible element comprises silicone rubber.

30. The connector of claim 21, wherein the proximal end of the flexible element at or near the proximal end of the housing member in the first position fills essentially completely the opening in the proximal end of the housing member in a horizontal cross-sectional dimension.

31. The connector of claim 21, wherein the spike facilitates a flow of fluid in a distal direction from the inside of the flexible element to a region outside of the flexible element.