# US 2014/0155837 A1 · Medical connector

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- Number: US 2014/0155837 A1
- Document ID: US20140155837A1
- Status: Published application
- Kind: A1
- Application number: 14/174,427
- Filed: 2014-02-06
- Published: 2014-06-05
- Earliest claimed: 2007-06-05
- Assignees: Nipro Corporation
- Applicants: Nipro Corporation
- Inventors: Takuya MASUDA; Akihiko ISHIZAKI
- Web page: https://patentgrep.com/patent/US20140155837A1

## CPC

- 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 39/045: {pre-slit to be pierced by blunt instrument}
- A61M 39/10: Tube connectors or tube couplings
- A61M 39/26: Valves closing automatically on disconnecting the line and opening on reconnection thereof {(check valves A61M39/24)}
- A61M 39/1033: {Swivel nut connectors, e.g. threaded connectors or bayonet-connectors}
- A61M 2039/1072: {with a septum present in the connector}
- 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}
- Y10T 29/49826: Assembling or joining
- 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)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A medical connector having a substantially cylindrical shape, a first upper end for receiving a male luer, and a second lower end, and including: a disc shaped valve member arranged at the first upper end and having an uppermost surface and a lowermost surface, a slit formed at a center portion thereof, an upper groove formed in a circumferential edge portion of the uppermost surface, and a lower groove formed in a circumferential edge portion of the lowermost surface; a housing with a pedestal for supporting the disc shaped valve member; a protrusion projecting upwardly from the pedestal and being arranged in the lower groove; and an annular ring member disposed on the circumferential edge portion of the uppermost surface, and having a claw portion projecting downwardly and being arranged in the upper groove on the uppermost surface of the valve member.

## Claims

### Claim 1

A medical connector having a substantially cylindrical shape and having a first upper end for receiving a male leer and a second lower end, said medical connector comprising:
a disc shaped valve member arranged at the first upper end of said medical connector, the disc shaped valve member having an uppermost surface and a lowermost surface, a slit formed at a center portion thereof, an upper groove formed in a circumferential edge portion of the uppermost surface, and a lower groove formed in a circumferential edge portion of the lowermost surface;
a housing with a substantially cylindrical shape having a pedestal for supporting the disc shaped valve member;
a protrusion projecting upwardly from the pedestal, and being arranged in the lower groove of the disc shaped valve member such that the protrusion is disposed between a radially center portion and a radially outer rim portion of the disc shaped valve member in a lower side of the disc shaped valve member; and
an annular ring member which is disposed on the circumferential edge portion of the uppermost surface of the valve member other than the center portion thereof, and having a claw portion integrally formed at a radially inner portion thereof so as to project downwardly, the claw portion being arranged in the upper groove formed on the circumferential edge portion of the uppermost surface of the valve member such that the claw portion is disposed between the radially center portion and the radially outer rim portion of the disc shaped valve member in an upper side of the disk shaped valve member;
wherein the valve member is fixed to the housing by joining of the annular ring member and the housing to each other.

### Claim 2 (depends on 1)

The medical connector according to claim 1, wherein a screw portion is formed in an outer circumferential surface of the housing so as to be screw-connected to a leer lock connector.

### Claim 3 (depends on 1)

The medical connector according to claim 1, wherein the outer diameter of the ring member is the same as the outer diameter of the valve member.

### Claim 4 (depends on 1)

The medical connector according to claim 1, wherein the annular ring member and the housing are joined to each other by melting the housing.

### Claim 5 (depends on 4)

The medical connector according to claim 4, wherein the melting is by ultrasonic vibration.