Connector and infusion set

Patent metadata

Field	Value
Publication number	US-2017014614-A1
Application number	US-201615277686-A
Country	US
Kind code	A1
Filing date	Sep 27, 2016
Priority date	Mar 28, 2014
Publication date	Jan 19, 2017
Grant date	—

Abstract

A connector includes an elastic valve body that includes a top face on which a slit is formed and a bottom face opposite the top face; and a holding section that is in contact with the top face and the bottom face of the elastic valve body and holds the elastic valve body. The holding section surrounds the slit, and the elastic valve body includes a peripheral section that is positioned outward of a portion of the elastic valve body that is held by the holding section when the elastic valve body is viewed from the top face side. The elastic valve body and the holding section are configured such that a volume of the peripheral section in a state in which the elastic valve body is held by the holding section is larger than a volume of the peripheral section in a state in which the elastic valve body is not held by the holding section.

First claim

1 . A connector comprising:
an elastic valve body that includes a top face on which a slit is formed and a bottom face opposite the top face; and a holding section that is in contact with the top face and the bottom face of the elastic valve body and holds the elastic valve body, wherein the holding section surrounds the slit, and the elastic valve body includes a peripheral section that is positioned outward of a portion of the elastic valve body that is held by the holding section when the elastic valve body is viewed from the top face side, and wherein the elastic valve body and the holding section are configured such that a volume of the peripheral section in a state in which the elastic valve body is held by the holding section is larger than a volume of the peripheral section in a state in which the elastic valve body is not held by the holding section.

2 . The connector according to claim 1 , further comprising:
a housing that includes an inner wall section that surrounds a perimeter of the elastic valve body at a location radially outward of the peripheral section, wherein the elastic valve body has a substantially circular outer shape when viewed from the top face side, and a gap is located between the peripheral section and the inner wall section in the state in which the elastic valve body is held by the holding section.

3 . The connector according to claim 1 , further comprising:
a housing that includes an inner wall section that surrounds a perimeter of the elastic valve body at a location radially outward of the peripheral section, wherein the elastic valve body has a substantially circular outer shape when viewed from the top face side, and the peripheral section and the inner wall section are in contact with each other in the state in which the elastic valve body is held by the holding section.

4 . The connector according to claim 2 , wherein:
the elastic valve body includes a constricted section that is held by the holding section, and an inner diameter of the inner wall section is at a maximum at a position radially outward of the constricted section in a cross-section parallel to a thickness direction of the elastic valve body, perpendicular to the radial direction.

5 . The connector according to claim 3 , wherein:
the elastic valve body includes a constricted section that is held by the holding section, and an inner diameter of the inner wall section is at a maximum at a position radially outward of the constricted section in a cross-section parallel to a thickness direction of the elastic valve body, perpendicular to the radial direction.

6 . The connector according to claim 4 , wherein the inner wall section has a curved shape projecting outward in the radial direction such that the inner diameter is at a maximum at the position radially outward of the constricted section in the cross-section parallel to the thickness direction.

7 . The connector according to claim 5 , wherein the inner wall section has a curved shape projecting outward in the radial direction such that the inner diameter is at a maximum at the position radially outward of the constricted section in the cross-section parallel to the thickness direction.

8 . The connector according to claim 2 , wherein:
the holding section is located in the housing, the holding section includes an annular top-face-side holding section that is in contact with the top face of the elastic valve body, and an annular bottom-face-side holding section that is in contact with the bottom face and holds the elastic valve body together with the top-face-side holding section, the peripheral section is housed in a housing space that is defined by the inner wall section, the top-face-side holding section, the bottom-face-side holding section, a top-face-side coupling section that connects an end of the inner wall section and the top-face-side holding section, and a bottom-face-side coupling section that connects another end of the inner wall section and the bottom-face-side holding section, in a cross-section perpendicular to the radial direction, and in the state in which the elastic valve body is held by the holding section, a gap is located between the peripheral section and (i) the top-face-side coupling section, and/or (ii) the bottom-face-side coupling section.

9 . The connector according to claim 3 , wherein:
the holding section is located in the housing, the holding section includes an annular top-face-side holding section that is in contact with the top face of the elastic valve body, and an annular bottom-face-side holding section that is in contact with the bottom face and holds the elastic valve body together with the top-face-side holding section, the peripheral section is housed in a housing space that is defined by the inner wall section, the top-face-side holding section, the bottom-face-side holding section, a top-face-side coupling section that connects an end of the inner wall section and the top-face-side holding section, and a bottom-face-side coupling section that connects another end of the inner wall section and the bottom-face-side holding section, in a cross-section perpendicular to the radial direction, and in the state in which the elastic valve body is held by the holding section, a gap is located between the peripheral section and (i) the top-face-side coupling section, and/or (ii) the bottom-face-side coupling section.

10 . The connector according to claim 2 , wherein:
the holding section is provided in the housing, the holding section is provided with an annular top-face-side holding section that is in contact with the top face of the elastic valve body, and an annular bottom-face-side holding section that is in contact with the bottom face and holds the elastic valve body together with the top-face-side holding section, the peripheral section is housed in a housing space that is defined by the inner wall section, the top-face-side holding section, the bottom-face-side holding section, a top-face-side coupling section that connects an end of the inner wall section and the top-face-side holding section, and a bottom-face-side coupling section that connects another end of the inner wall section and the bottom-face-side holding section, in a cross-section perpendicular to the radial direction, and in the state in which the elastic valve body is held by the holding section, the peripheral section is in contact with (i) the top-face-side coupling section, and/or (ii) the bottom-face-side coupling section.

11 . The connector according to claim 3 , wherein:
the holding section is provided in the housing, the holding section is provided with an annular top-face-side holding section that is in contact with the top face of the elastic valve body, and an annular bottom-face-side holding section that is in contact with the bottom face and holds the elastic valve body together with the top-face-side holding section, the peripheral section is housed in a housing space that is defined by the inner wall section, the top-face-side holding section, the bottom-face-side holding section, a top-face-side coupling section that connects an end of the inner wall section and the top-face-side holding section, and a bottom-face-side coupling section that connects another end of the inner wall section and the bottom-face-side holding section, in a cross-section perpendicular to the radial direction, and in the state in which the elastic valve body is held by the holding section, the peripheral section is in contact with (i) the top-face-side coupling section, and/or (ii) the bottom-face-side coupling section.

12 . A connector comprising:
an elastic valve body that includ

Assignees

• Terumo Corp

Inventors

• Ueda Yasuhiro
• Kakinoki Toshihiko
• Fujieda Ryouhei

Classifications

• A61M2039/0072

  Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions · CPC title

• A61M5/16813

  by controlling the degree of opening of the flow line · CPC title

• A61M2206/20

  having means for promoting or enhancing the flow, actively or passively · CPC title

• A61M39/26

  Valves closing automatically on disconnecting the line and opening on reconnection thereof {(check valves A61M39/24)} · CPC title

• A61M39/10 Primary

  Tube connectors; Tube couplings {(A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014)} · CPC title