Needleless port and method of manufacturing the same
First Claim
1. A needleless port comprising:
- a pedestal that forms a part of a flow channel and has an opening to the flow channel;
a cover that is engaged with the pedestal at a position corresponding to the opening and has a cavity that opens to exterior at a predetermined distance from the opening; and
a septum that is held in the cavity and is made of a resilient material with a passageway for allowing an insertion member to be inserted from the exterior to the opening, wherein the septum comprises a main body that extends from an inner end on the pedestal side toward an outer end on the exterior side of the cavity of the cover, with the passageway being formed between an inner-end face and an outer-end face thereof, and compression ribs provided on sides of the main body, the main body has a cross section in a direction orthogonal to the passageway of a shape having a dimension in a length direction larger than that in a breadth direction, the passageway includes a slit and a bore, the slit having a predetermined depth from the outer-end face of the main body and extending in the same direction as the breadth direction, and the bore extending from the slit to the inner-end face of the main body and having a lateral section of a spindle shape whose major axis extends in the same direction as the breadth direction, the compression ribs are provided at the both side ends of the main body in the breadth direction so as to extend along the axial direction of the passageway, the cavity of the cover has a circular cross section whose diameter is smaller than a distance between the external surfaces of the compression ribs, and with the septum being held inside the cavity, a space is formed between an external surface of the main body at a part without the compression ribs and an internal wall of the cover, and the bore is closed by a compressive force applied from the internal wall of the cover to the septum via the compression ribs.
1 Assignment
0 Petitions
Accused Products
Abstract
A septum (1) is held in the cavity of a cover (6) and mounted on a pedestal (7) forming part of a flow channel, and comprises a main body having a through passageway and compression ribs formed in the sides thereof. In the main body, the vertical diameter of the cross section orthogonal to the through passageway is longer than the transverse diameter, and the through passageway includes a vertical diameter direction slit (4) formed in the vicinity of the outer end surface of the main body, and a hole (5) that is formed in a region extending from the slit to the inner end surface of the main body and whose cross section is spindle-shaped having a longer axis extending in the vertical diameter direction. The compression ribs are formed in the opposite sides of the main body in the transverse diameter direction, and the cavity of the cover is of circular cross section whose diameter is shorter than the outer surface spacing between the compression ribs. With the septum mounted, a space is defined between part of the surface of the main body and the inner wall surface of the cover. Further, the hole is closed by a compressive force acting on the septum from the inner wall surface of the cover through the compression ribs. The through passageway in the septum hardly forms a dead space that would cause a residual liquid therein, and the slit in the septum surface hardly opens even at the time of pressurization.
-
Citations
22 Claims
-
1. A needleless port comprising:
- a pedestal that forms a part of a flow channel and has an opening to the flow channel;
a cover that is engaged with the pedestal at a position corresponding to the opening and has a cavity that opens to exterior at a predetermined distance from the opening; and
a septum that is held in the cavity and is made of a resilient material with a passageway for allowing an insertion member to be inserted from the exterior to the opening, whereinthe septum comprises a main body that extends from an inner end on the pedestal side toward an outer end on the exterior side of the cavity of the cover, with the passageway being formed between an inner-end face and an outer-end face thereof, and compression ribs provided on sides of the main body, the main body has a cross section in a direction orthogonal to the passageway of a shape having a dimension in a length direction larger than that in a breadth direction, the passageway includes a slit and a bore, the slit having a predetermined depth from the outer-end face of the main body and extending in the same direction as the breadth direction, and the bore extending from the slit to the inner-end face of the main body and having a lateral section of a spindle shape whose major axis extends in the same direction as the breadth direction, the compression ribs are provided at the both side ends of the main body in the breadth direction so as to extend along the axial direction of the passageway, the cavity of the cover has a circular cross section whose diameter is smaller than a distance between the external surfaces of the compression ribs, and with the septum being held inside the cavity, a space is formed between an external surface of the main body at a part without the compression ribs and an internal wall of the cover, and the bore is closed by a compressive force applied from the internal wall of the cover to the septum via the compression ribs. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- a pedestal that forms a part of a flow channel and has an opening to the flow channel;
-
2. A needleless port comprising:
- a pedestal that forms a part of a flow channel and has an opening to the flow channel;
a cover that is engaged with the pedestal at a position corresponding to the opening and has a cavity that opens to exterior at a predetermined distance from the opening; and
a septum that is held in the cavity and is made of a resilient material with a substantial passageway for allowing an insertion member to be inserted from the exterior to the opening, whereinthe septum comprises a main body that extends from an inner end on the pedestal side toward an outer end on the exterior side of the cavity of the cover, with the substantial passageway being formed between an inner-end face and an outer-end face thereof, and compression ribs provided on sides of the main body, the main body has a cross section in a direction orthogonal to the substantial passageway of a shape having a dimension in a length direction larger than that in a breadth direction, the substantial passageway includes an unpenetrated region and a bore, the unpenetrated region having a predetermined depth from the outer-end face of the main body, and the bore extending from the unpenetrated region to the inner-end face of the main body and having a lateral section of a spindle shape whose major axis extends in the same direction as the breadth direction, the compression ribs are provided at the both side ends of the main body in the length direction so as to extend along the axial direction of the substantial passageway, the cavity of the cover has a circular cross section whose diameter is smaller than a distance between the external surfaces of the compression ribs, and with the septum being held inside the cavity, a space is formed between an external surface of the main body at a part without the compression ribs and an internal wall of the cover, and the bore is closed by a compressive force applied from the internal wall of the cover to the septum via the compression ribs.
- a pedestal that forms a part of a flow channel and has an opening to the flow channel;
Specification