# US 10,478,593 B2 · Catheter hub with removable extensions

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- Number: US 10,478,593 B2
- Document ID: US10478593B2
- Status: Granted
- Kind: B2
- Application number: 15/118,543
- Filed: 2015-02-17
- Published: 2017-02-16
- Granted: 2019-11-19
- Earliest claimed: 2014-02-17
- Assignees: The Johns Hopkins University
- Applicants: The Johns Hopkins University
- Inventors: Cameron C. Jones; Clifford R. Weiss
- Web page: https://patentgrep.com/patent/US10478593B2

## CPC

- A61M 25/0097: {characterised by the hub (tube connectors or tube couplings A61M39/10)}
- A61M 1/3661: {for haemodialysis}
- A61M 25/02: Holding devices, e.g. on the body
- A61M 25/0606: {"Over-the-needle" catheter assemblies, e.g. I.V. catheters}
- A61M 39/04: having pierceable self-sealing members
- A61M 39/045: {pre-slit to be pierced by blunt instrument}
- A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)}
- A61M 39/105: {Multi-channel connectors or couplings, e.g. for connecting multi-lumen tubes (multi-channel connectors in general F16L37/56)}
- A61M 2025/0253: {where the catheter is attached by straps, bands or the like secured by adhesives}
- A61M 2025/0286: {anchored in the skin by suture or other skin penetrating devices}
- A61M 2039/1016: {Unlocking means providing a secure or comfortable disconnection}
- A61M 2039/1072: {with a septum present in the connector}
- A61M 2039/1077: {Adapters, e.g. couplings adapting a connector to one or several other connectors}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

In one aspect, the present invention is directed to a multi-lumen catheter with self-sealing hub and an attachable extension assembly. In a preferred aspect, the present invention can allows removal of the external fluid connections of an elongated percutaneous medical article, such as a catheter or cannula. The percutaneous medical article suitably contains a distal septum that prevents fluid movement within the intraluminal space of the percutaneous medical article, when the fluid connections are removed. A single-use, disposable extension set of one or more single lumen lines with associated clamp and cap is attached for intraluminal access and removed following clinical use. Retaining the catheter transition allows the catheter to be secured using methods common to the art.

## Claims

### Claim 1

A catheter comprising:
a hub having an outer housing defining a proximal end and a distal end, wherein the distal end of the outer housing defines an opening into an inner space defined by the outer housing, and disposed within the inner space is a distal connector, and wherein the proximal end of the housing defines a proximal connector for coupling to an intravenous catheter tube;
a self-sealing septum disposed within the opening defined by the distal end of the outer housing, such that the self-sealing septum forms a barrier for the distal connector; and
an extension tube assembly, wherein the extension tube assembly includes an extension tube and a locking key-type connector for coupling the extension tube to the distal connector through the self-sealing septum,
wherein the extension tube assembly includes a luer that is separated into a plunger and a luer taper,
wherein the plunger is formed integrally with the locking key-type connector and remains isolated from a fluid path, and
wherein the plunger extends further than the luer taper to engage with and displace the self-sealing septum.

### Claim 2 (depends on 1)

The catheter of claim 1 further comprising a locking key-type cover for covering the opening and the septum when the catheter is not in use.

### Claim 3 (depends on 2)

The catheter of claim 2 wherein the locking key-type cover further comprises plugged luer channels.

### Claim 4 (depends on 1)

The catheter of claim 1 wherein the extension tube further comprises a number of extension tubes in a range of 1-4 extension tubes.

### Claim 5 (depends on 1)

The catheter of claim 1 wherein the self-sealing septum further comprises slits in order to allow the connection of the extension tube assembly.

### Claim 6 (depends on 1)

The catheter of claim 1 wherein the plunger comprises threading.

### Claim 7 (depends on 1)

The catheter of claim 1 wherein the self-sealing septum is reset using a slider or elastic band mechanism.

### Claim 8 (depends on 1)

The catheter of claim 1 further comprising an integrated catheter connector with a septum and a clamp.

### Claim 9 (depends on 1)

The catheter of claim 1 further comprising a secondary clamp that enables replacement of the extension tube assembly.

### Claim 10 (depends on 1)

The catheter of claim 1 wherein the intravenous catheter tube includes a single lumen or multiple lumens.