# US 10,307,534 B2 · Infusion set and connector

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- Number: US 10,307,534 B2
- Document ID: US10307534B2
- Status: Granted
- Kind: B2
- Application number: 15/278,993
- Filed: 2016-09-28
- Published: 2017-03-30
- Granted: 2019-06-04
- Earliest claimed: 2015-09-29
- Assignees: Terumo Kabushiki Kaisha
- Applicants: Terumo Kabushiki Kaisha
- Inventors: Kazuya Akiyama
- Web page: https://patentgrep.com/patent/US10307534B2

## CPC

- A61M 5/16804: {Active flow controllers}
- A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)}
- A61M 39/20: Closure caps or plugs for connectors or open ends of tubes
- A61M 39/22: Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)}
- A61M 2039/1083: {having a plurality of female connectors, e.g. Luer connectors}
- A61M 2039/1088: {having a plurality of male connectors, e.g. Luer 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

An infusion set includes a first infusion line set that forms a first infusion line with an injection port; and a connector including a male connector end that is insertable into the injection port, a female connector end to which a second infusion line can be connected, a flow channel, and a partition. The injection port and the connector are configured such that, when the male connector end of the connector is inserted into the injection port, the flow channel of the connector is divided by the partition into an in-flow channel configured to let in a liquid from the injection port in the first infusion line and an out-flow channel configured to let out the liquid that has entered the in-flow channel to the injection port.

## Claims

### Claim 1

An infusion set comprising:
a first infusion line set that forms a first infusion line with an injection port; and
a connector defining a flow channel and comprising:
a male connector end that is insertable into the injection port,
a first female connector end to which a second infusion line is connectable,
a second female connector end, and
a partition that extends into the male connector end and divides a portion of the flow channel into an in-flow channel and an out-flow channel,
wherein the injection port and the connector are configured such that, when the male connector end of the connector is inserted into the injection port, liquid is flowable from the injection port to the in-flow channel, from the in-flow channel around the partition to the out-flow channel, and from the out-flow channel back to the injection port,
wherein the male connector end has a first central axis, the first female connector end has a second central axis, and the second female connector end has a third central axis, the first central axis being substantially in line with the third central axis and intersecting the second central axis,
wherein the partition extends from an interior of the male connector end to an interior of the second female connector end, and
wherein the connector is configured such that, when a male connector end of an additional connector that is identical to the connector is inserted into the second female connector end, the partition adjoins a partition of the additional connector.

### Claim 2 (depends on 1)

The infusion set according to claim 1, wherein:
the partition of the connector comprises a tip receiver and a protrusion that protrudes toward a tip of the second female connector end with respect to the tip receiver,
the connector is configured such that, when the male connector end of the additional connector is inserted into the second female connector end, the tip receiver receives a tip of the male connector end of the additional connector and the protrusion is inside the male connector end of the additional connector in such a manner that the protrusion adjoins the partition of the additional connector.

### Claim 3 (depends on 1)

The infusion set according to claim 1, further comprising:
a cap configured to be attached to a tip portion of the male connector end, the cap defining vent channels configured to (i) block liquid communication between the interior and an exterior of the male connector end, but (ii) allow gas communication between the interior and the exterior of the male connector end,
wherein the cap has a protrusion configured to enter the male connector end through an opening at a tip of the male connector end and plug into one of the in-flow channel and the out-flow channel that is in communication with the first female connector end when the cap is attached to the tip portion of the male connector.

### Claim 4

A connector configured to be connected to an injection port disposed in a first infusion line, the connector defining a flow channel and comprising:
a male connector end that is insertable into the injection port;
a first female connector end to which a second infusion line is connectable;
a second female connector end into which a male connector end of an additional connector that is identical to the connector is insertable; and
a partition that extends into the male connector end and divides a portion of the flow channel into an in-flow channel and an out-flow channel,
wherein the connector is configured such that, when the male connector end is inserted into the injection port, liquid is flowable from the injection port to the in-flow channel, from the in-flow channel around the partition to the out-flow channel, and from the out-flow channel back to the injection port, and
wherein the connector is configured such that, when the male connector end of the additional connector is inserted into the second female connector end, the partition adjoins a partition of the additional connector.

### Claim 5 (depends on 4)

An infusion set comprising:
the connector according to claim 4; and
a second infusion line set that forms the second infusion line that is connectable to the first female connector end.

### Claim 6

A combination comprising:
a first connector defining a first flow channel and comprising:
a male connector end,
a first female connector end, and
a first partition that extends into an interior of the male connector and divides a portion of the first flow channel into an in-flow channel and an out-flow channel;
a second connector defining a second flow channel and comprising:
an upstream port to which a proximal portion of a first infusion line is connectable;
a downstream port to which a distal portion of the first infusion line is connectable,
a second female connector end into which the male connector end of the first connector is insertable, and
a second partition that extends into an interior of the second female connector end and divides a portion of the second flow channel into an upstream flow channel and a downstream flow channel;
wherein the first connector and the second connector are configured such that, when the male connector end of the first connector is inserted into the second female connector end of the second connector, the first partition cooperates with the second partition such that liquid is flowable from the upstream port to the upstream flow channel of the second connector, from the upstream flow channel of the second connector to the in-flow channel of the first connector, from the in-flow channel around the first partition to the out-flow channel of the first connector, from the out-flow channel of the first connector to the downstream flow channel of the second connector, and from the downstream flow channel to the downstream port of the second connector.

### Claim 7 (depends on 6)

The combination of claim 6, wherein:
the second partition comprises:
a tip receiver configured to receive a tip of the male connector end of the first connector when the male connector end of the first connector is inserted into the second female connector end of the second connector, and
a protrusion that protrudes towards a tip of the second female connector end with respect to the tip receiver; and
the first connector is configured such that, when the tip receiver receives the tip of the male connector end of the first connector, the protrusion is located inside the male connector end of the first connector and abuts the first partition of the first connector.