Control forward/flashback forward one hand introducer needle and catheter assembly

• US 5,697,914 A
• Filed: 03/16/1995
• Issued: 12/16/1997
• Est. Priority Date: 03/16/1995
• Status: Expired due to Term

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Brimhall, Greg L.
• Primary Examiner(s): Rimell, Sam
• Assistant Examiner(s): Racunas, Robert V.
• Application Number:
  US08/405,324
• Time in Patent Office: 1,006 Days
• Field of Search: 604/164, 604/165, 604/167, 604/168, 604/174, 604/177
• US Class Current: 604/177
• CPC Class Codes: A61M 25/0606 "Over-the-needle" catheter assemblies, e.g. I.V. catheters
• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
• CPC Class Codes: A61M 25/0637 Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
• CPC Class Codes: A61M 25/0693 Flashback chambers

Abstract

The catheter includes a catheter hub at its proximal end having a radially extending wing. The needle is connected at its proximal end to a needle hub. The needle may have at least one notch therein. The needle hub defines a radially extending fin thereon. When the introducer needle is inserted through the catheter such that the distal tip of the needle extends beyond the distal tip of the catheter, the fin on the needle hub extends beyond the distal end of the wing on the catheter hub. This arrangement allows the distal tip of the needle to be retracted into the catheter with a simple proximal motion by the healthcare worker.

Claims

1. A catheter and introducer needle assembly, comprising:

a catheter having a proximal end and a distal end;

a catheter hub in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, the catheter hub including a radially extending wing having a proximal end and a distal end and a side port in fluid communication with the catheter hub;

an elastomeric plug affixed to the catheter hub and located proximal of the side port;

an introducer needle having a proximal end and a distal end disposed inside the catheter; and

a needle hub having a proximal end and a distal end connected to the proximal end of needle, the needle hub defining a radially extending fin having a proximal end and a distal end wherein when the distal end of the needle hub is adjacent to the proximal end of the catheter hub, the needle hub can be rotated and moved proximally with respect to the catheter hub.

2. The catheter and introducer needle assembly of claim 1 further comprising an extension tube extending from the side port.

3. The catheter and introducer needle assembly of claim 1 wherein the needle defines at least one notch therein.

4. The catheter and introducer needle assembly of claim 2 wherein at least one notch is located adjacent to the side port.

5. The catheter and introducer needle assembly of claim 1 wherein the needle has a pair of notches, one notch being positioned adjacent to the distal tip of the needle and the other notch being positioned adjacent to the side port.

6. The catheter and introducer needle assembly of claim 1 wherein when the distal end of the needle extends beyond the distal end of the catheter, the distal end of the fin extends beyond the distal end of the wing.

7. The catheter and introducer needle assembly of claim 1 wherein the elastomeric plug is filled with gel.

8. A catheter and introducer needle assembly, comprising:

a catheter having a proximal end and a distal end;

a catheter hub in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter and a side port in fluid communication with the catheter hub;

a radially extending wing having a proximal end and a distal end affixed to the catheter hub adjacent to the side port and defining a window therein;

a translucent extension tube connected to the side port and extending past the window;

a plug affixed to the catheter hub and located proximal of the side port;

an introducer needle having a proximal end and a distal end disposed inside the catheter; and

a needle hub having a proximal end and a distal end connected to the proximal end of the needle defining a radially extending fin affixed to the needle hub wherein when the distal end of the needle hub is adjacent to the proximal end of the catheter hub, the needle hub can be rotated and moved proximally with respect to the catheter hub.

9. The catheter and introducer needle assembly of claim 8 wherein the needle defines at least one notch therein.

10. The catheter and introducer needle assembly of claim 9 wherein the needle has a pair of notches, one notch being positioned adjacent to the distal tip of the needle and the other notch being positioned adjacent to the side port.

11. A catheter and introducer needle assembly, comprising:

a catheter having a proximal end and a distal end;

a catheter hub in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter and a side port in fluid communication with the catheter hub;

a radially extending wing having a proximal end and a distal end affixed to the catheter hub adjacent to the side port and defining a window therein;

a translucent extension tube connected to the side port and extending past the window;

a plug affixed to the catheter hub and located proximal of the side port;

an introducer needle having a proximal end and a distal end disposed inside the catheter; and

a needle hub having a proximal end and a distal end connected to the proximal end of the needle.

12. The catheter and introducer needle assembly of claim 11 wherein the needle defines at least one notch therein.

13. The catheter and introducer needle assembly of claim 12 wherein the needle has a pair of notches, one notch being positioned adjacent to the distal tip of the needle and the other notch being positioned adjacent to the side port.

14. The catheter and introducer needle assembly of claim 11 wherein the radially extending wing defines a tubular member spaced from the side port, the extension tube extends through the tubular member and the window is defined between the side port and the tubular member.

15. The catheter and introducer needle assembly of claim 14 wherein the tubular member is adjacent to the distal end of the radially extending wing.

16. The catheter and introducer needle assembly of claim 15 wherein the needle defines at least one notch therein.

17. The catheter and introducer needle assembly of claim 16 wherein the needle has a pair of notches, one notch being positioned adjacent to the distal tip of the needle and the other notch being positioned adjacent to the side port.

18. The catheter and introducer needle assembly of claim 11 wherein the window is a clear tubular member located adjacent to the side port on the radially extending wing.

19. The catheter and introducer needle assembly of claim 18 wherein the needle defines at least one notch therein.