# US 9,517,324 B2 · Extendable intravenous catheter

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- Number: US 9,517,324 B2
- Document ID: US9517324B2
- Status: Granted
- Kind: B2
- Application number: 14/210,866
- Filed: 2014-03-14
- Published: 2014-09-18
- Granted: 2016-12-13
- Earliest claimed: 2013-03-15
- Assignees: The Board of Trustees of the University of Illinois
- Applicants: The Board of Trustees of the University of Illinois
- Inventors: Girish G. Deshpande
- Web page: https://patentgrep.com/patent/US9517324B2

## CPC

- A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable}
- A61M 25/0021: {characterised by the form of the tubing (A61M25/0054 takes precedence)}
- A61M 25/0606: {"Over-the-needle" catheter assemblies, e.g. I.V. catheters}
- A61M 25/00: Catheters; Hollow probes (dilators A61M29/00; {peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00} ; for measuring or testing A61B; {materials for catheters A61L29/00})
- A61M 25/003: {characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves (catheter tips A61M25/0067)}
- A61M 25/008: {Strength or flexibility characteristics of the catheter tip}
- A61M 25/0102: {Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod}
- A61M 25/0152: {with pre-shaped mechanisms, e.g. pre-shaped stylets or pre-shaped outer tubes}
- A61M 2025/0025: {having a collapsible lumen}
- A61M 2025/0063: {having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body}
- A61M 2025/0175: {having telescopic features, interengaging nestable members movable in relations to one another}
- 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

An intravenous catheter has a tip portion, an extendable portion and a proximal portion attached to a hub. The extendable portion has a refracted position and an extended position. A wire may be incorporated in the intravenous portion. The wire may have a receiver disposed in the tip portion. An extender tool is insertable and removable from the catheter. The extender is dimensioned to engage the receiver upon insertion into said catheter and lengthen the extendable portion of said catheter to said extended position when inserted.

## Claims

### Claim 1

An intravenous catheter comprising:
a hub;
a tip portion comprising an opening;
a proximal portion attached to the hub; and
an extendable portion disposed between the proximal portion and the tip portion, the extendable portion having a retracted position and an extended position and comprising a wire incorporated therein and anchored to the hub, the wire comprising a coiled portion,
wherein the extendable portion is configured to be extended from the retracted position to the extended position by an extender tool and to retain the extended position after removal of the extender tool, the extender tool being insertable and removable from the catheter and dimensioned for passing through the hub, the proximal portion, and the extendable portion but not through the opening in the tip portion.

### Claim 2 (depends on 1)

The intravenous catheter according to claim 1, further comprising a receiver disposed in the tip portion, the receiver being configured to reversibly engage the extender tool.

### Claim 3 (depends on 1)

The intravenous catheter according to claim 1, wherein the wire supports maintenance of an intravenous portion of the catheter in the extended position.

### Claim 4 (depends on 3)

The intravenous catheter according to claim 3, wherein the wire further comprises a receiver disposed in the tip portion, the receiver capable of engaging the extender tool.

### Claim 5 (depends on 4)

The intravenous catheter according to claim 4, wherein the extender tool comprises a ball point tip.

### Claim 6 (depends on 3)

The intravenous catheter according to claim 3, wherein the wire further comprises a receiver disposed in the tip portion, the receiver comprising a loop having a smaller diameter than a diameter of a ball at an end of the extender tool.

### Claim 7 (depends on 1)

The intravenous catheter according to claim 1, wherein the extendable portion comprises a side wall and the wire is attached to the side wall.

### Claim 8 (depends on 7)

The intravenous catheter according to claim 7, wherein the wire is embedded in the side wall.

### Claim 9 (depends on 8)

The intravenous catheter according to claim 8, wherein the side wall comprises at least one layer and wherein the wire is positioned within the at least one layer.

### Claim 10

A kit comprising:
an intravenous catheter, comprising:
a hub;
a tip portion comprising an opening;
a proximal portion attached to the hub;
an extendable portion disposed between the proximal portion and the tip portion and comprising a wire incorporated therein and anchored to the hub, the wire comprising a coiled portion and supporting maintenance of an intravenous portion of the catheter in the extended position, the extendable portion having a first position and a second position, wherein the first position is short relative to the second position; and
an extender tool that is removably insertable into the catheter and is dimensioned for passing through the hub, the proximal portion, and the extendable portion but not through the opening,
wherein pressure exerted by the extender tool on a receiver of the catheter transitions the catheter from the first position to the second position and the catheter maintains the second position after subsequent removal of the extender tool from the catheter.

### Claim 11 (depends on 10)

The kit according to claim 10, wherein the extendable portion comprises a side wall and the wire is attached to the side wall.

### Claim 12 (depends on 11)

The kit according to claim 11, wherein the wire comprises the receiver which is disposed in the tip portion to engage the extender tool.

### Claim 13 (depends on 12)

The kit according to claim 12, wherein the extender tool comprises a ball point tip.

### Claim 14 (depends on 11)

The kit according to claim 11, wherein the wire is embedded in the side wall.

### Claim 15 (depends on 11)

The kit according to claim 11, wherein the side wall comprises at least one layer and wherein the wire is positioned within the at least one layer.

### Claim 16 (depends on 10)

The kit according to claim 10, wherein a receiver further comprises a loop comprising a smaller diameter than a diameter of a ball at an end of the extender tool.

### Claim 17 (depends on 10)

The kit according to claim 10, wherein the receiver is disposed in the tip portion, the receiver being configured to reversibly engage the extender tool.