Connection system for tunneled catheters

Patent metadata

Field	Value
Publication number	US-11471647-B2
Application number	US-201916394813-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	Nov 7, 2014
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A method of manufacturing a catheter assembly including a proximal catheter assembly portion and a distal catheter assembly portion. The method of manufacturing comprises forming the proximal catheter assembly portion, creating a distal catheter assembly portion, and applying a polymeric coating to at least one of the proximal catheter assembly portion and the distal catheter assembly portion. The proximal catheter assembly portion can include a catheter hub and at least one cannula, the catheter hub including at least one fluid passageway in communication with a lumen of the at least one cannula. The distal catheter assembly portion can include a catheter tube defining at least one lumen designed to receive the at least one cannula. The polymeric coating is 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.

First claim

What is claimed is:

1. A method of manufacturing a catheter assembly, comprising:
forming a proximal catheter assembly portion, the proximal catheter assembly portion comprising a catheter hub and at least one cannula, the catheter hub including at least one fluid passageway in communication with a lumen of the at least one cannula;
creating a distal catheter assembly portion including a catheter tube, the catheter tube comprising a polymeric material and defining at least one lumen designed to receive the at least one cannula; and
applying a polymeric coating to at least one of the proximal catheter assembly portion and the distal catheter assembly portion, 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 by an interference or slip-type fit,
wherein the polymeric coating includes a polymer selected from the group consisting of silicone, polyester, polyethyleneterephthalate, polyethylene, high density polyethylene, polyvinylchloride, low-density polyethylene, polypropylene, polystyrene, polyamides, nylons, acrylonitrilebutadi ene styrene, polycarb onate, polycarbonate/acrylonitrile butadienestyrene, polyetheretherketone, and polytetrafluoroethylene, and
wherein the polymeric material of the catheter tube includes the polymer selected for the polymeric coating.

2. The method of manufacturing according to claim 1 , wherein the polymeric coating is applied to an outer surface of the at least one cannula, the method further comprising bead blasting the outer surface of the at least one cannula before applying the polymeric coating.

3. The method of manufacturing according to claim 1 , wherein the applying step comprises applying a polymeric coating to 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.

4. The method of manufacturing according to 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.

5. The method of manufacturing according to claim 1 , wherein the catheter hub of the proximal catheter assembly portion comprises a bifurcating hub, wherein the at least one cannula comprises a first cannula and a second cannula, the bifurcating hub including a first fluid passageway in communication with a lumen of the first cannula and a second fluid passageway in communication with a lumen of the second cannula, and wherein the at least one lumen of the catheter tube comprises a first lumen designed to receive the first cannula and a second lumen designed to receive the second cannula.

6. The method of manufacturing according to claim 1 , wherein the polymer selected from the group is polyurethane.

7. The method of manufacturing according to claim 1 , wherein the polymeric coating and the polymeric material of the catheter tube include a different polymer.

8. The method of manufacturing according to claim 1 , 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, polyami des, nylons, acrylonitrilebutadiene styrene, polycarbonate, polycarbonate/acrylonitrile butadienestyrene, polyetheretherketone, and polytetrafluoroethylene.

9. The method of manufacturing according to claim 1 , wherein the lumen of the at least one cannula is in communication with the at least one fluid passageway of the catheter hub via a proximal tube portion interposed between the at least one cannula and the catheter hub.

10. The method of manufacturing according to claim 4 , further comprising providing a compression component configured to compress a region surrounding the interface.

11. The method of manufacturing according to claim 10 , wherein the compression component includes a compression sleeve including a securement cuff.

12. The method of manufacturing according to claim 5 , wherein the proximal catheter assembly portion further comprises a first extension leg in communication with the first fluid passageway and a second extension leg in communication with the second fluid passageway.

13. The method of manufacturing according to claim 9 , wherein the proximal tube portion includes a securement cuff.

14. A method of manufacturing a catheter assembly, comprising:
forming a proximal catheter assembly portion, the proximal catheter assembly portion comprising a catheter hub and at least one cannula, the catheter hub including at least one fluid passageway in communication with a lumen of the at least one cannula;
creating a distal catheter assembly portion including a catheter tube, the catheter tube comprising a polymeric material and defining at least one lumen designed to receive the at least one cannula; and
applying a polymeric coating to at least one of the proximal catheter assembly portion and the distal catheter assembly portion, 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 by an interference or slip-type fit,
wherein one of the polymeric coating and the polymeric material of the catheter tube includes silicone.

15. The method of manufacturing according to claim 14 , wherein the polymeric coating is applied to an outer surface of the at least one cannula, the method further comprising bead blasting the outer surface of the at least one cannula before applying the polymeric coating.

16. The method of manufacturing according to claim 14 , wherein the applying step comprises applying a polymeric coating to 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.

17. The method of manufacturing according to claim 14 , 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.

18. The method of manufacturing according to claim 14 , wherein the catheter hub of the proximal catheter assembly portion comprises a bifurcating hub, wherein the at least one cannula comprises a first cannula and a second cannula, the bifurcating hub including a first fluid passageway in communication with a lumen of the first cannula and a second fluid passageway in communication with a lumen of the second cannula, and wherein the at least one lumen of the catheter tube comprises a first lumen designed to receive the first cannula and a second lumen designed to receive the second cannula.

19. The method of manufacturing according to claim 14 , wherein the other of the polymeric coating and the polymeric material of the catheter tube includes polyurethane.

20. The method of manufacturing according to claim 17 , further comprising providing a co

Assignees

• Bard Inc C R

Inventors

• Loesener German

Classifications

• A61M39/12

  for joining a flexible tube to a rigid attachment · CPC title

• A61M25/0097 Primary

  characterised by the hub (connectors A61M39/10) · CPC title

• A61M1/285

  Catheters therefor · CPC title

• A61M25/0009

  Making of catheters or other medical or surgical tubes · CPC title

• A61M2025/0006

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