Catheter devices with pliable catheter hubs and related methods

Patent metadata

Field	Value
Publication number	US-2016354580-A1
Application number	US-201615170548-A
Country	US
Kind code	A1
Filing date	Jun 1, 2016
Priority date	Jun 2, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A catheter assembly with a catheter, an outer casing positioned over the proximal end and at least part of the hub body of the catheter hub. The outer casing being pliable and has an interior cavity and a septum at a proximal end thereof. A needle hub removably coupled to a proximal end of the catheter hub with the outer casing wedged between the catheter hub and the needle hub. The needle hub has a proximal interior cavity and a shroud with a distal opening. A needle projects distally from the needle hub through the septum of the outer casing and has a needle tip extending out a distal opening of a catheter tube in a ready to use position.

First claim

1 . A catheter assembly, comprising:
a catheter hub having a hub body, an opening at a proximal end, and an interior cavity defined by the hub body; a catheter tube extending distally from the catheter hub and communicating with the interior cavity of the catheter hub; an outer casing positioned over the proximal end and at least part of the hub body of the catheter hub, said outer casing having an interior cavity and a septum at or near a proximal end; a needle hub removably coupled at the proximal end of the catheter hub such that part of the outer casing is wedged between the needle hub and the catheter hub, the needle hub having interior proximal cavity and a distal cavity; and a needle projecting distally from the needle hub through the septum of the outer casing and having a needle tip extending out a distal opening of the catheter tube in a ready to use position.

2 . The catheter assembly of claim 1 , wherein a plurality of detents extend laterally from the proximal end of the catheter hub engaging with a plurality of slots defined in the outer casing to secure the outer casing to the catheter hub.

3 . The catheter assembly of claim 2 , wherein the proximal end of the catheter hub is shaped as a female Luer with external threads, the external threads being the plurality of detents.

4 . The catheter assembly of claim 3 , wherein one or more channels are formed on an exterior surface of the catheter hub, and one or more ridges are formed in the interior cavity of the outer casing engaging with the one or more channels of the catheter hub to retain the outer casing to the catheter hub.

5 . The catheter assembly of claim 1 , wherein a flared portion extends laterally from the catheter hub, the outer casing extends over the flared portion.

6 . The catheter assembly of claim 1 , wherein the outer casing is made of a soft pliable material.

7 . The catheter assembly of claim 6 , wherein the outer casing forms a seal with the proximal end of the catheter hub.

8 . The catheter assembly of claim 1 , wherein a connector having a male Luer tip is connected to the proximal end of the catheter hub through the septum of the outer casing.

9 . The catheter assembly of claim 1 , wherein the septum has a plurality of slits defining a plurality of flaps and a convex outer surface.

10 . The catheter assembly of claim 9 , wherein the convex outer surface creates an outward tension so that when the flaps are pushed by a male Luer tip, the flaps defect in a proximal direction.

11 . The catheter assembly of claim 1 , wherein the septum is positioned inside the interior cavity of the catheter hub, and the outer casing has a proximal opening at the proximal end.

12 . A method of forming a catheter assembly, the method comprising:
extending a catheter tube in a distal direction of a catheter hub having a body; placing an outer casing over at least part of the body of the catheter hub; and extending a needle having a needle tip distally through a septum formed with the outer casing and out a distal end of the catheter tube in a ready position; and wherein the outer casing is flexible.

13 . The method of claim 12 , further comprising extending the needle through a needle guard.

14 . The method of claim 13 , further comprising placing the needle guard inside a clip housing, said clip housing located in a distal interior cavity of a shroud.

15 . The method of claim 12 , further comprising engaging a plurality of slots formed in the outer casing with a plurality of detents extending laterally from a proximal end of the catheter hub to secure the outer casing to the catheter hub.

16 . The method of claim 15 , wherein the proximal end of the catheter hub is shaped with a female Luer with external threads.

17 . The method of claim 12 , wherein a flared portion extends laterally from the catheter hub and the outer casing extends over the flared portion.

18 . The method of claim 12 , wherein the outer casing is made of a soft pliable material.

19 . The method of claim 18 , wherein the outer casing forms a seal with the proximal end of the catheter hub.

20 . The method of claim 12 , wherein the septum has a convex outer surface.

Assignees

• Braun Melsungen Ag

Inventors

• Teoh Hui Kuun
• Bin Zakaria Mohd Zairizal
• Tan Aik Aun
• Phang Chee Mun
• Bin Abdulla Mohamad Yasin

Classifications

• A61M5/1626

  Needle protectors therefor (in combination with syringes A61M5/3202; protectors for sharps A61B50/3001) · CPC title

• A61M5/162

  Needle sets, i.e. connections by puncture between reservoir and tube {; Connections between reservoir and tube (in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14)} · CPC title

• A61M25/0009

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

• A61M25/0606

  "Over-the-needle" catheter assemblies, e.g. I.V. catheters · CPC title

• A61M25/0097 Primary

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