# US 11,027,110 B2 · Medical connector

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- Number: US 11,027,110 B2
- Document ID: US11027110B2
- Status: Granted
- Kind: B2
- Application number: 15/934,699
- Filed: 2018-03-23
- Published: 2018-07-26
- Granted: 2021-06-08
- Earliest claimed: 2015-09-24
- Assignees: Terumo Kabushiki Kaisha
- Applicants: Terumo Kabushiki Kaisha
- Inventors: Yasuhiro Ueda
- Web page: https://patentgrep.com/patent/US11027110B2

## CPC

- A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)}
- A61M 39/045: {pre-slit to be pierced by blunt instrument}
- A61M 39/26: Valves closing automatically on disconnecting the line and opening on reconnection thereof {(check valves A61M39/24)}
- A61M 39/229: {Single-way cut-off valves}
- A61M 2039/1038: {Union screw connectors, e.g. hollow screw or sleeve having external threads}
- F16L 37/38: with fluid cut-off means in only one of two pipe-end fittings
- 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)}
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

A medical connector includes: a male connector portion that is connectable to a closed female connector portion of another medical connector, the closed female connector portion comprising an opening formed on a top wall, and a valve body blocking the opening and having a slit, an outer peripheral edge portion of the valve body being secured to the top wall; wherein the male connector portion includes: a tubular body having an outer diameter equal to or less than a length that is twice a distance between a center of a top surface of the valve body and an end of the slit that is radially furthest from the center, the tubular body being insertable into the slit, a limiting portion configured to limit an insertion depth of the tubular body, a sealing portion configured to surround the slit, and a locking portion.

## Claims

### Claim 1

An assembly comprising:
a closed female connector portion that comprises an opening formed in a top wall, and a valve body blocking the opening and having a slit, an outer peripheral edge portion of the valve body being secured to the top wall; and
a male connector portion that is connectable to the closed female connector portion of a medical connector,
wherein the male connector portion comprises:
a limiting portion configured to limit an insertion depth of a tubular body into the opening by directly contacting a top surface of the top wall of the closed female connector portion of the medical connector when the male connector portion is connected to the closed female connector portion,
an enlarged portion extending from a distal end side of the limiting portion and configured to surround the slit and to directly contact a top surface of the valve body when the male connector portion is connected to the closed female connector portion, wherein a diameter of the enlarged portion at a distal end side of the enlarged portion is less than a diameter of the limiting portion,
the tubular body extending from the distal end side of the enlarged portion and being insertable into the slit, wherein an outer diameter of the tubular body is less than an outer diameter of the enlarged portion, and wherein the outer diameter of the tubular body is equal to or less than a length that is twice a distance between a center of the top surface of the valve body and an end of the slit that is radially furthest from the center, and
a locking portion configured to keep the male connector portion connected to the closed female connector portion.

### Claim 2 (depends on 1)

The assembly according to claim 1, wherein:
the locking portion is an internal thread that is engageable with an external thread that is located on an outer peripheral surface of the closed female connector portion.

### Claim 3 (depends on 1)

The assembly according to claim 1, wherein the closed female connector portion is connectable to a male luer having an outer diameter and a taper angle conforming to ISO 594-1.

### Claim 4 (depends on 1)

The assembly according to claim 1, wherein a proximal most end of the tubular body is located at a distal most end of the enlarged portion.

### Claim 5 (depends on 1)

The assembly according to claim 1, wherein the limiting portion, the enlarged portion, and the tubular body are immovably fixed with respect to one another.

### Claim 6 (depends on 1)

The assembly according to claim 1, wherein the tubular body is immovably fixed with respect to the limiting portion.

### Claim 7 (depends on 1)

The assembly according to claim 1, wherein the limiting portion, the enlarged portion, and the tubular body are formed as a single piece.

### Claim 8 (depends on 1)

The assembly according to claim 1, wherein the diameter of the limiting portion is greater than a diameter of the opening of the closed female connector portion.