Locking blunt cannula

• US 5,810,792 A
• Filed: 04/03/1996
• Issued: 09/22/1998
• Est. Priority Date: 04/03/1996
• Status: Expired due to Term

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: Fangrow, Thomas F. Jr., Lopez, George A., Wait, Daniel J., Bui, Dennis M., Hanly, Kevin Barry, Arnold, David Charles
• Primary Examiner(s): Mendez, Manuel
• Application Number:
  US08/627,881
• Time in Patent Office: 902 Days
• Field of Search: D24/112, D24/129, D24/130, 604/280, 604/283, 604/905, 604/403, 604/411, 285/81, 285/82, 285/91, 285/92, 285/386, 285/387
• US Class Current: 604/533
• CPC Class Codes: A61M 2039/042 Shrouds encircling the access needle preventing accidental needle-stick
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence

Abstract

Disclosed is a medical connector for introducing medication to a patient in a safe, convenient way by releasably locking an influent fluid line to a receiving port, and method of manufacturing the same. The connector comprises a cannula recessed within a cavity defined by a housing. The housing contains a retaining ridge and gripping members to prevent accidental disconnection of the connector for the port.

Claims

1. A connector for connecting a fluid line to a port having a receiving end, comprising:

a body having a proximal end and a distal end, said body including a wall structure defining an internal cavity, said distal end having an opening sufficiently large to mate with the receiving end of said port, said cavity being sized to fit snugly on the receiving end of said port, said body having a retaining ring at the distal end thereof;

a hollow spike having a tip and a base, said spike integrally formed with said body of said connector and being attached to said body at said base and seated inside said cavity such that said tip is recessed within said cavity; and

a grip mechanism integral with said body to releasably secure the connector onto said port.

2. The connector of claim 1, wherein the body comprises a first cylindrical portion adjacent the proximal end and a second cylindrical portion adjacent the distal end, said first portion being shaped to be placed in fluid communication with the influent fluid line and said second portion being shaped to be placed in fluid communication with the port.

3. The connector of claim 2, wherein the first cylindrical portion has a first outer diameter and the second cylindrical portion has a second outer diameter, said first diameter being different from said second diameter.

4. The connector of claim 3, wherein said body has an annular portion dividing said first cylindrical portion and said second cylindrical portion, said annular portion being a circular disk having a hole at its center, said hole being in fluid communication with said spike.

5. The connector of claim 4, wherein said body has at least one scoop cut out of said wall structure at the distal end of said connector.

6. The connector of claim 1, wherein the proximal end of said body has a luer lock.

7. The connector of claim 1, wherein said spike is cylindrical.

8. The connector of claim 7, wherein said spike has a tapered tip.

9. The connector of claim 1, wherein said grip mechanism comprises two grips disposed on opposite sides of said body, each of said grips having a grip lip at one end and a grip handle at the other end.

10. The connector of claim 9, wherein each of said grips is a curved rectangular flap with at least one edge fixed to the body.

11. The connector of claim 10, wherein each of said grips forms a portion of said wall structure.

12. A connector for connecting a fluid line to a port having a receiving end, comprising:

a housing including a wall structure defining an internal cavity, said housing having a proximal end and a distal end, said wall structure at the distal end of said housing having a retaining ring which forms an opening sufficiently large to mate with said port;

a grip mechanism to releasably secure said housing onto said port; and

a hollow shaft extending on a center axis of said internal cavity from said proximal end of said housing to a distance not exceeding said distal end of said housing, wherein said hollow shaft and said housing are permanently coupled.

13. The connector of claim 12, wherein said grip mechanism comprises two grip elements disposed on opposite sides of said housing.

14. The connector of claim 12, wherein said retaining ring includes a pair of scoops disposed at opposite sides of said housing.

15. The connector of claim 13, wherein each grip element comprises a grip arm including a proximal end and a distal end, each grip arm having a grip flange at the distal end of said grip arm and each grip arm having a grip handle at the proximal end of said grip arm.

16. A connector for connecting fluid lines equipped with fluid line connectors, comprising:

a housing including a wall structure defining an internal cavity having a center axis, said housing having a proximal end and a distal end, said wall structure of said housing having a lock member which extends into said internal cavity from said wall structure to thereby engage said fluid line connector, said distal end of said connector mating with a fluid line connector; and

a cannula extending from said proximal end of said housing along said center axis.

17. The connector of claim 16, wherein said lock member which extends towards said internal cavity comprises a retaining ring.

18. The connector of claim 16, further including means for moving said lock member into and out of engagement with said fluid line connector.

19. The connector of claim 18, wherein said means comprises a lever member connected to said wall structure.

20. The connector of claim 19, wherein said lock member is connected to a flap portion of said wall structure and said lever member is connected to said flap member, whereby engagement of said lever member effectuates movement of said lock member mounted to said flap member.