# US 11,992,654 B2 · Syringe adapter

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- Number: US 11,992,654 B2
- Document ID: US11992654B2
- Status: Granted
- Kind: B2
- Application number: 17/674,639
- Filed: 2022-02-17
- Published: 2022-06-02
- Granted: 2024-05-28
- Earliest claimed: 2018-10-11
- Assignees: CareFusion 303, Inc.
- Applicants: Carefusion 303, Inc.
- Inventors: George Mansour; Linda Ewing; Eugene Mason; Tomas Frausto; Ryan Callahan
- Web page: https://patentgrep.com/patent/US11992654B2

## CPC

- A61M 5/162: Needle sets, i.e. connections by puncture between reservoir and tube
- A61J 1/2065: {having aligning and guiding means}
- A61M 39/12: for joining a flexible tube to a rigid attachment
- A61M 5/1626: {Needle protectors therefor (in combination with syringes A61M5/3202; protectors for sharps A61B50/3001)}
- A61M 5/178: Syringes
- A61M 39/10: Tube connectors or tube couplings
- A61M 2005/1623: {Details of air intake}
- 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 2039/267: {having a sealing sleeve around a tubular or solid stem portion of the connector}
- A61M 2205/75: with filters
- 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)}
- A61J: CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE

## Abstract

An exemplary syringe adapter for coupling with a syringe may include a housing. A needle-free connector may be disposed in the housing. A communication member may be in slidable engagement with the housing. The communication member may be slidable, with respect to the housing, between an unactuated state and an actuated state of the syringe adapter. A cannula may extend from the communication. In the unactuated state, the cannula may be retracted within the needle-free connector. In the actuated state, the cannula may protrude through and axially beyond the needle-free connector.

## Claims

### Claim 1

A syringe adapter for coupling with a syringe, the syringe adapter comprising:
a housing;
a needle-free connector disposed in the housing;
a communication member in slidable engagement with the housing, the communication member slidable, with respect to the housing, between an unactuated state and an actuated state of the syringe adapter;
a cannula extending from the communication member, wherein, in the unactuated state, the cannula is retracted within the needle-free connector and, in the actuated state, the cannula protrudes through and axially beyond the needle-free connector;
a piston element disposed in the needle-free connector, the piston element comprising a piston head and a sealable orifice disposed through the piston head, wherein the sealable orifice is in a sealed state when the piston element is in an uncompressed state and is in an opened state when the piston element is in a compressed state; and
a conduit extending from, and disposed through, the communication member, wherein the conduit is fluidly separated from the needle-free connector when the syringe adapter is coupled with the syringe and in the unactuated state.

### Claim 2 (depends on 1)

The syringe adapter of claim 1, wherein the conduit is in fluid communication with the needle-free connector when the syringe adapter is coupled with the syringe and in the actuated state.

### Claim 3 (depends on 2)

The syringe adapter of claim 2, further comprising a duct extending from, and through, the communication member, wherein the duct fluidly couples the cannula to at least one vent disposed in a filter housing.

### Claim 4 (depends on 3)

The syringe adapter of claim 3, further comprising a filter disposed in the filter housing and a valve disposed between the filter and the cannula, wherein the valve is configured to allow fluid to flow from the at least one vent through the filter to the cannula and is configured to prevent fluid flow from the cannula to the filter.

### Claim 5 (depends on 4)

The syringe adapter of claim 4, further comprising a first fluid path and a second fluid path when the syringe adapter is coupled to the syringe and in the actuated state.

### Claim 6 (depends on 5)

The syringe adapter of claim 5, wherein the first fluid path is configured to provide filtered ambient air into the syringe and the second fluid path is configured to allow fluid from the syringe to flow to an intravenous set coupled to the syringe adapter.

### Claim 7 (depends on 6)

The syringe adapter of claim 6, wherein the first fluid path flows through at least the cannula, the duct, and the at least one vent.

### Claim 8 (depends on 5)

The syringe adapter of claim 5, wherein the second fluid path flows through at least the connection port, the piston element, and the conduit.

### Claim 9 (depends on 1)

The syringe adapter of claim 1, wherein the needle-free connector comprises a connection port sealingly flush with the piston head and the sealable orifice when the syringe adapter is uncoupled with the syringe.

### Claim 10

A syringe adapter for coupling a syringe to a fluid system, the syringe adapter comprising:
a female connector;
a body in fluid communication with the female connector;
a male connector in fluid communication with the female connector and the body, the male connector configured to couple with a medical device;
a cannula extending axially through the body and out through the female connector; and
a filter housing in fluid communication with the cannula, the filter housing elevated axially beyond the female connector, wherein a first fluid path is formed through the filter housing and the cannula, and a second fluid path is formed through the female connector, the body, and the male connector, the filter housing configured to prevent a filter disposed in the filter housing from contacting fluid in the first fluid path, and wherein a closed system is provided when the male connector is uncoupled from the medical device.

### Claim 11 (depends on 10)

The syringe adapter of claim 10, further comprising a flexible tubing fluidly coupling the filter housing to the cannula.

### Claim 12 (depends on 11)

The syringe adapter of claim 11, wherein the female connector is coupled to the syringe such that the cannula is arranged within a chamber of the syringe.

### Claim 13 (depends on 12)

The syringe adapter of claim 12, further comprising a clip arranged around the syringe and the flexible tubing, the clip configured to secure the flexible tubing to the syringe.

### Claim 14 (depends on 10)

The syringe adapter of claim 10, wherein the medical device is an intravenous set.

### Claim 15 (depends on 10)

The syringe adapter of claim 10, wherein the medical device is a needle-free connector.

### Claim 16

A syringe adapter for coupling with a syringe, the syringe adapter comprising:
a female connector configured to couple with the syringe;
a body in fluid communication with the female connector;
a male connector in fluid communication with the female connector and the body, the male connector configured to couple with a medical device;
a chamber extending from, and in fluid communication with, the body, wherein the chamber is configured to receive fluid from the syringe for subsequent delivery to the medical device; and
a needle-free connector disposed at, and in fluid communication with, the female connector, wherein the needle-free connector is configured to provide a closed system when the female connector is uncoupled from the syringe,
wherein the chamber is one of a resilient bag, a non-resilient bag and a collapsible plastic container.

### Claim 17 (depends on 16)

The syringe adapter of claim 16, wherein a valve is disposed between the female connector and the needle-free connector.