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US 6,808,161 B1Granted
Connector
AssigneeTerumo Kabushiki Kaisha
InventorYoshinori Hishikawa
Life of this patent
Estimating the term…
Abstract
A connector used for various medical instruments, infusion containers, and infusion devices to connect a tube. The connector includes a cylindrical valve made of elastic material with a closable slit so that a tube can be connected without passing through the valve.
Claims17
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base which is tapered such that a wall thickness gradually increases toward a distal end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- and a slit formed in said valve portion which opens when said valve portion is pushed inward, wherein the slit has a size such that said tube cannot penetrate through the slit upon opening of said slit;
- and
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation, and a base of which the wall thickness gradually increases toward the distal end causes a larger deformation on a proximal side than a distal side because of lower flexural strength on the proximal side, such that said valve portion becomes in close contact with distal end surface and distal peripheral surface of said tube.
6 more elements
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base which is tapered such that a wall thickness gradually increases toward a distal end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- and a slit formed in said valve portion which opens when said valve portion is pushed inward, wherein the slit has a size such that said tube cannot penetrate through the slit upon opening of said slit;
- and
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation such that said base becomes compressed in the axial direction to become dilated, such that a base of which the wall thickness gradually increases toward the distal end causes a larger deformation on a proximal side than a distal side because of lower flexural strength on the proximal side.
6 more elements
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base which is tapered such that a wall thickness gradually increases toward a distal end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- and a slit formed in said valve portion which opens when said valve portion is pushed inward, wherein the slit has a size such that said tube cannot penetrate through the slit upon opening of said slit;
- and
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation, and a base of which the wall thickness gradually increases toward the distal end causes a larger deformation on a proximal side than a distal side because of lower flexural strength on the proximal side, such that said valve portion becomes in close contact with said tube and the area of contact enters the interior of said base.
6 more elements
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base which is tapered such that a wall thickness gradually increases toward a distal end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- and a slit formed in said valve portion which opens when said valve portion is pushed inward, wherein the slit has a size such that said tube cannot penetrate through the slit upon opening of said slit;
- and
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation with the base being dilated;
- and a space is defined between said base and said housing to allow said dilatation of the base and a base of which the wall thickness gradually increases toward the distal end causes a larger deformation on a proximal side than a distal side because of lower flexural strength on the proximal side.
7 more elements
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- a slit formed in said valve portion which opens when said valve portion is pushed inward;
- and a fixture portion on the other axial end of said base, said fixture portion securing said valve against said housing;
- and
- said housing has a relief space defined in its interior to thereby allow moving of fixture portion of said base into said relief space;
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation with the fixture portion of said base being pushed into said relief space.
8 more elements
A connector comprising:
- a housing provided with a fluid passage in its interior and a connection port for engagement with a tube;
- and
- a valve of an elastic material accommodated in said housing;
- wherein
- said valve has a cylindrical base which is tapered such that a wall thickness gradually increases toward a distal end;
- a valve portion on one axial end of said base which becomes in contact with said tube to be pushed inward by said tube;
- a slit formed in said valve portion which opens when said valve portion is pushed inward;
- and a fixture portion on the other axial end of said base, said fixture portion securing said valve against said housing, wherein the slit has a size such that said tube cannot penetrate through the slit upon opening of said slit;
- and
- said housing has a relief space defined in its interior to thereby allow moving of the fixture portion of said base into said relief space;
- said valve undergoes elastic deformation when said tube is engaged with said connection port of the housing by pushing said tube against said valve portion of the valve, and said slit opens as a result of said elastic deformation and a base of which the wall thickness gradually increases toward the distal end causes a larger deformation on a proximal side than a distal side because of lower flexural strength on the proximal side, such that the fixture portion of said base being pushed into said relief space.
8 more elements
Dependencies are inferred from the claim text.