Connection System for Tunneled Catheters

Patent metadata

Field	Value
Publication number	US-2016129222-A1
Application number	US-201514935364-A
Country	US
Kind code	A1
Filing date	Nov 6, 2015
Priority date	Nov 7, 2014
Publication date	May 12, 2016
Grant date	—

Abstract

A catheter assembly is disclosed, comprising a proximal catheter assembly portion and a distal catheter assembly portion. The proximal catheter assembly portion includes a bifurcating hub that defines at least one fluid passageway. The distal catheter assembly portion includes a catheter tube that defines at least one lumen and includes a polymeric material. A cannula assembly is also disclosed and includes at least one cannula that is operably connected with the fluid passageway of the birfurcating hub. The cannula is further configured to operably connect with the lumen of the catheter tube so as to provide fluid communication between the proximal and distal catheter assembly portions when the two portions are connected. A polymeric coating is included with the cannula and the catheter tube, and is configured to provide a seal between the cannula and the catheter tube when the proximal and distal catheter assembly portions are connected together.

First claim

What is claimed is:

1 . A catheter assembly, comprising:
a proximal catheter assembly portion including a bifurcating hub, the bifurcating hub including at least one fluid passageway; a distal catheter assembly portion including a catheter tube defining at least one lumen, the catheter tube including a polymeric material; a cannula assembly including at least one cannula operably connected with the at least one fluid passageway of the bifurcating hub, the at least one cannula further configured to operably connect with the at least one lumen of the catheter tube so as to provide fluid communication between the proximal catheter assembly portion and the distal catheter assembly portion when the proximal catheter assembly portion and the distal catheter assembly portion are connected; and a polymeric coating included with at least one of the at least one cannula and the catheter tube, the polymeric coating configured to provide a seal between the at least one cannula and the catheter tube when the proximal catheter assembly portion and the distal catheter assembly portion are connected.

2 . The catheter assembly as defined in claim 1 , wherein the polymeric coating is included on a surface of the at least one cannula before the proximal catheter assembly portion and the distal catheter assembly portion are connected.

3 . The catheter assembly as defined in claim 2 , wherein the at least one cannula is received into the at least one lumen of the catheter tube.

4 . The catheter assembly as defined in claim 3 , wherein the polymeric coating is included on an outer surface of the at least one cannula such that the polymeric coating is positioned adjacent a portion of an interior surface of the at least one lumen of the catheter tube when the proximal catheter assembly portion and the distal catheter assembly portion are connected.

5 . The catheter assembly as defined in claim 1 , wherein an interface is established when the proximal catheter assembly portion and the distal catheter assembly portion are connected, the polymeric coating configured to provide sealing to prevent fluid leakage at the interface.

6 . The catheter assembly as defined in claim 5 , wherein the proximal catheter assembly portion is connected to the distal catheter assembly portion after the catheter tube of the distal catheter assembly portion is subcutaneously tunneled in the patient.

7 . The catheter assembly as defined in claim 6 , further comprising a compression component configured to compress a region surrounding the interface.

8 . The catheter assembly as defined in claim 7 , wherein the compression component includes a compression sleeve and wherein the compression sleeve includes a securement cuff.

9 . The catheter assembly as defined in claim 5 , wherein the interface is disposed within a subcutaneous tunnel of the patient after the proximal catheter assembly portion and the distal catheter assembly portion are connected.

10 . The catheter assembly as defined in claim 1 , wherein the at least one fluid passageway of the bifurcating hub is operably connected to at least one extension leg.

11 . The catheter assembly as defined in claim 1 , wherein the polymeric coating and the polymeric material of the catheter tube include the same polymer.

12 . The catheter assembly as defined in claim 11 , wherein the polymeric coating and the polymeric material of the catheter tube each includes polyurethane.

13 . The catheter assembly as defined in claim 11 , wherein the polymeric coating and the polymeric material of the catheter tube each includes at least one of polyurethane, silicone, polyester, polyethyleneterephthalate, polyethylene, high density polyethylene, polyvinylchloride, low-density polyethylene, polypropylene, polystyrene, polyamides, nylons, acrylonitrilebutadiene styrene, polycarbonate, polycarbonate/acrylonitrile butadienestyrene, polyetheretherketone, and polytetrafluoroethylene.

14 . The catheter assembly as defined in claim 1 , wherein the polymeric coating and the polymeric material of the catheter tube include differing polymers.

15 . The catheter assembly as defined in claim 14 , wherein one of the polymeric coating and the polymeric material of the catheter tube includes silicone.

16 . The catheter assembly as defined in claim 15 , wherein the other of the polymeric coating and the polymeric material of the catheter tube includes polyurethane.

17 . The catheter assembly as defined in claim 14 , wherein one of the polymeric coating and the polymeric material of the catheter tube includes at least one of polyurethane, silicone, polyester, polyethyleneterephthalate, polyethylene, high density polyethylene, polyvinylchloride, low-density polyethylene, polypropylene, polystyrene, polyamides, nylons, acrylonitrilebutadiene styrene, polycarbonate, polycarbonate/acrylonitrile butadienestyrene, polyetheretherketone, and polytetrafluoroethylene.

18 . The catheter assembly as defined in claim 1 , wherein the at least one cannula is bead blasted prior to application of the polymeric coating.

19 . The catheter assembly as defined in claim 1 , wherein the at least one cannula is operably connected to the at least one fluid passageway of the bifurcating hub via a proximal tube portion interposed between the cannula assembly and the bifurcating hub.

20 . The catheter assembly as defined in claim 19 , wherein the proximal tube portion includes a securement cuff.

21 . A method of manufacturing a catheter assembly, the method comprising:
providing a cannula assembly on a proximal catheter assembly portion, the cannula assembly including at least one cannula; providing a distal catheter assembly portion including a catheter tube, the catheter tube including a polymeric material and defining at least one lumen; and applying a polymeric coating at an interface of the at least one cannula with the catheter tube, the polymeric coating configured to provide sealing of the interface when the at least one cannula is operably connected to the catheter tube.

22 . The method of manufacturing as defined in claim 21 , further comprising adding heat to a region proximate the interface after the at least one cannula is operably connected to the catheter tube.

23 . The method of manufacturing as defined in claim 21 , wherein the polymeric coating is applied to a surface of the at least one cannula, and wherein the method further comprises bead blasting the surface of the at least one cannula before applying the polymeric coating.

24 . The method of manufacturing as defined in claim 21 , further comprising applying a compression sleeve to the interface of the at least one cannula with the catheter tube.

25 . A catheter assembly, comprising:
a proximal catheter assembly portion including a bifurcating hub, the bifurcating hub including a plurality of fluid passageways; a distal catheter assembly portion including a catheter tube defining a plurality of lumens, the catheter tube including a polymeric material; a cannula assembly including a plurality of cannulae, the cannulae operably connected corresponding fluid passageways of the bifurcating hub and the lumens of the catheter tube; each cannula further configured to operably connect with a corresponding one of the lumens of the catheter tube so as to provide fluid communication between the proximal catheter assembly portion and the distal catheter assembly portion when

Assignees

• Bard Inc C R

Inventors

• Loesener German

Classifications

• A61M2025/0031

  characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment · CPC title

• A61M2025/0006

  which can be secured against axial movement, e.g. by using a locking cuff · CPC title

• A61M39/105

  Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes (multi-channel connectors in general F16L37/56) · CPC title

• A61M25/0014

  Connecting a tube to a hub · CPC title

• A61M1/3661

  for haemodialysis · CPC title