NEONATAL AND PEDIATRIC CATHETER SYSTEM

• US 20120053523A1
• Filed: 08/31/2011
• Published: 03/01/2012
• Est. Priority Date: 09/01/2010
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Harding, Weston F.
• Granted Patent: US 9,375,551 B2
• Time in Patent Office: Days
• US Class Current: 604/164.08
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0006 which can be secured against axial movement, e.g. by using a locking cuff
• CPC Class Codes: A61M 2025/0007 Epidural catheters
• CPC Class Codes: A61M 2025/0008 having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: A61M 25/06 Body-piercing guide needles or the like
• CPC Class Codes: A61M 25/0606 "Over-the-needle" catheter assemblies, e.g. I.V. catheters
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 25/0618 having means for protecting only the distal tip of the needle, e.g. a needle guard
• CPC Class Codes: A61M 25/0631 having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle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 25/0643 Devices having a blunt needle tip, e.g. due to an additional inner component
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 5/3243 being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel devices for protecting guide needles in combination with catheters A61M25/0612

Abstract

A neonatal intravascular device having an extension tube to relief stress between a catheter adapter and a luer adapter of the catheter assembly.

Claims

1. An intravenous device, comprising:

a needle adapter having a proximal end, a distal end, an outer surface and an inner compartment;

a catheter assembly including a catheter tube coupled to a catheter adapter, the catheter assembly further including a luer adapter coupled to the catheter adapter via an extension tube, and a fluid pathway extending through the catheter tube, the catheter adapter, the extension tube and the luer adapter, wherein a portion of the catheter assembly is selectively housed within the inner compartment of the needle adapter; and

an introducer needle having a proximal end, a distal end and a body extending therebetween, the proximal end being coupled to the proximal end of the needle adapter and the distal end extending beyond a tip portion of the catheter tube, wherein the body of the introducer needle extends through the fluid pathway of the catheter assembly.

2. The intravenous device of claim 1, further comprising a safety clip interposedly positioned between a proximal end of the luer adapter and the proximal end of the needle adapter, the safety clip having an aperture through which the introducer needle is inserted, the safety clip further including an arm having a first surface interlockedly coupled to the luer adapter, and a second surface in contact with a surface of the inner compartment, wherein contact between the second surface of the arm and the surface of the inner compartment maintains the interlocked coupling of the first surface of the arm and the luer adapter.

3. The intravenous device of claim 2, wherein a distal end of the inner compartment further comprises a recess for receiving the second surface of the arm, wherein upon receiving the second surface of the arm, the first surface of the arm is disengaged from the luer adapter.

4. The intravenous device of claim 2, wherein the first surface of the arm is outwardly biased against the surface of the inner compartment.

5. The intravenous device of claim 2, further comprising a second arm positioned approximately opposite the first arm.

6. The intravenous device of claim 1, wherein the extension tube is flexible.

7. The intravenous device of claim 1, wherein a distal end of the inner compartment further comprises a groove into which a portion of the catheter adapter is seated.

8. The catheter apparatus of claim 3, further comprising a needle sheath coupled to the safety clip, the needle sheath having a lumen through which the introducer needle is inserted, the lumen being in fluid communication with the aperture of the safety clip.

9. The catheter apparatus of claim 8, wherein a tip portion of the introducer needle is located within the lumen of the needle sheath when the second surface of the arm is positioned in the recess of the distal end of the inner compartment.

10. The catheter apparatus of claim 1, further comprising a stiffening member having a proximal end, a distal end and a lumen extending therebetween, the proximal end being coupled to the proximal end of the needle adapter, and the distal end slidably extending through the fluid pathway of the luer adapter and the extension tube, wherein a portion of the body of the introducer needle extends through the lumen of the stiffening member.

11. A method for manufacturing a catheter apparatus, the method comprising:

providing a needle adapter having a proximal end, a distal end, an outer surface and an inner compartment;

providing a catheter assembly comprising a catheter tube coupled to a catheter adapter, the catheter assembly further including a luer adapter coupled to the catheter adapter via an extension tube, and a fluid pathway extending through the catheter tube, the catheter adapter, the extension tube and the luer adapter;

housing a portion of the catheter assembly within the inner compartment of the needle adapter; and

providing an introducer needle having a proximal end, a distal end and a body extending therebetween, the proximal end being coupled to the proximal end of the needle adapter and the distal end extending beyond a tip portion of the catheter tube, wherein the body of the introducer needle extends through the fluid pathway of the catheter assembly.

12. The method of claim 11, further comprising a step for interposedly positioning a safety clip between a proximal end of the luer adapter and the proximal end of the needle adapter, the safety clip having an aperture through which the introducer needle is inserted, the safety clip further including an arm having a first surface interlockedly coupled to the luer adapter, and a second surface in contact with a surface of the inner compartment, wherein contact between the second surface of the arm and the surface of the inner compartment maintains the interlocked coupling of the first surface of the arm and the luer adapter.

13. The method of claim 12, further comprising a step for providing a recess on the distal end of the inner compartment for receiving the second surface of the arm, wherein upon receiving the second surface of the arm, the first surface of the arm is disengaged from the luer adapter.

14. The method of claim 12, further comprising a step for providing the safety clip with a second arm positioned approximately opposite the first arm, the second arm having a first surface interlockedly coupled to the luer adapter, and a second surface in contact with a surface of the inner compartment.

15. The method of claim 11, wherein the extension tube is flexible.

16. The method of claim 11, further comprising a step for providing a groove into a distal end of the inner compartment for receiving a portion of the catheter adapter.

17. The method of claim 13, further comprising a step for providing a needle sheath coupled to the safety clip, the needle sheath having a lumen through which the introducer needle is inserted, the lumen being in fluid communication with the aperture of the safety clip.

18. The method of claim 17, further comprising a step for locating a tip portion of the introducer needle within the lumen of the needle sheath when the second surface of the arm is positioned in the recess of the distal end of the inner compartment.

19. The method of claim 17, further comprising a step for extending a portion of the needle sheath through the fluid pathway of the extension tube, wherein the needle sheath provides a rigid connection between the luer adapter and the catheter adapter for purposes of aiding insertion of the catheter tube during an infusion procedure.

20. An intravenous device system, comprising:

a needle adapter having a proximal end, a distal opening, an outer surface and an inner compartment;

a catheter assembly partially housed within the inner compartment of the needle adapter, the catheter assembly comprising a catheter tube coupled to a catheter adapter, the catheter adapter further coupled to a luer adapter via a flexible extension tube, the catheter tube, the catheter adapter, the flexible extension tube and the luer adapter having a common fluid pathway;

an introducer needle having a proximal end, a distal tip and a body extending therebetween, the proximal end of the introducer needle being fixedly coupled to a proximal surface of the inner compartment, the body of the introducer needle extending distally through the common fluid pathway of the catheter assembly, wherein the distal tip of the introducer needle extends beyond a tip portion of the catheter tube; and

a stiffening member having a proximal end, a distal end and lumen extending therebetween, the proximal end of the stiffening member being fixedly coupled to the proximal surface of the inner compartment, the distal extending through the common fluid pathway of the luer adapter and the extension tube, wherein a portion of the body of the introducer needle is positioned within the lumen of the stiffening member.