Control forward introducer needle and catheter assembly

• US 5,676,656 A
• Filed: 07/24/1996
• Issued: 10/14/1997
• 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, SAMUEL G
• Application Number:
  US08/685,755
• Time in Patent Office: 447 Days
• Field of Search: 604/162, 604/164, 604/165, 604/174, 604/177, 604/116, 604/117, 604/281, 128/DIG. 26
• US Class Current: 604/165.03
• 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• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle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

Abstract

The catheter includes a catheter hub at its proximal end having a pair of spaced apart squeeze grips radially extending from the catheter hub. The needle is connected at its proximal end to a needle hub. The needle hub has a circumferentially extending bump formed adjacent to its distal end. The needle and needle hub fit within a slide assembly comprising a tubular portion with a circumferentially extending groove formed therein and a radially extending fin extending from the outer surface of the tubular portion of the slide assembly. The bump of the needle hub mates in the groove of the slide assembly to allow rotation of the needle hub with respect to the slide assembly. However, the bump and the groove are dimensioned to prevent relative axial movement between the needle hub and the slide assembly. The fin on the slide assembly extends forward so as to be positioned between and extend beyond the pair of squeeze grips on the catheter hub. This arrangement allows the distal tip of the needle to be retracted into the catheter with a simple 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 with a proximal end and a distal end connected to the proximal end of the catheter, the catheter hub including at least one radially extending squeeze grip;

an elastomeric plug affixed to and sealing the proximal end of the catheter hub;

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

a needle hub having a proximal end and a distal end connected to the proximal end of needle, the needle hub defining a circumferentially extending bump; and

a slide assembly disposed about the needle hub, the slide assembly including a radially extending fin and defining a circumferentially extending groove that mates with the bump to allow relative rotational movement between the needle hub and the slide assembly but prevents substantial relative axial movement between the slide assembly and the needle hub.

2. The catheter and introducer needle assembly of claim 1 wherein the catheter hub defines a side port located distally of the elastomeric plug and in fluid communication with the catheter.

3. 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 a distal end of the fin extends beyond a distal end of the squeeze grip.

4. The catheter and introducer needle assembly of claim 1 wherein the catheter hub includes a pair of spaced apart radially extending squeeze grips.

5. The catheter and introducer needle assembly of claim 4 wherein when the distal end of the needle extends beyond the distal end of the catheter a distal end of the fin extends beyond a distal end of the squeeze grips.