Fluid couplings
Some fluid coupling devices described herein are configured for use in fluid systems for purposes of providing a sterile connection for drug delivery. In some embodiments, the fluid coupling devices can be implemented as multi-use, sterile fluid coupling devices that are configured to reduce the likelihood of fluid spillage when being disconnected.
1. A fluid coupling system comprising:
an insert coupling comprising:
an insert housing defining an internal space, the insert housing having a front face and an opposite end configured for connection to a first fluid carrying component;
an insert valve member slidably disposed within the internal space of the insert housing, the insert valve member including a projection;
an insert seal member attached to the front face of the insert housing and defining a bore; and
an insert spring disposed within the internal space of the insert housing and arranged to bias the insert valve member against the insert seal member such that the projection is within the bore and such that a front face of the insert valve member is planar with a forward-facing surface of the insert seal member; and
a body coupling comprising;
a body housing defining an internal space, the body housing having a front end configured to receive a front end portion of the insert housing and an opposite end configured for connection to a second fluid carrying component;
a body stem extending within the internal space of the body housing, the body stem defining a central lumen and a lateral opening in fluid communication with the central lumen;
a body seal member slidably disposed within the internal space of the body housing, the body seal member defining a bore in which the body stem is slidably received; and
a body spring disposed within the internal space of the body housing and arranged to bias the body seal member to a position in which the bore of the body seal member seals the lateral opening of the body stem and in which a forward-facing surface of the body seal member and a front face of the body stem are planar with each other.
2. The fluid coupling system of claim 1 , wherein the body stem defines the lateral opening and a second lateral opening, the lateral opening and the second lateral opening in fluid communication with the central lumen.
3. The fluid coupling system of claim 1 , wherein a front face of the projection matches a size and shape of the front face of the body stem.
4. The fluid coupling system of claim 3 , wherein the insert coupling and the body coupling are configured to be coupleable by abutting the front face of the projection against the front face of the body stem and then pushing the insert coupling and the body coupling toward each other.
5. The fluid coupling system of claim 4 , wherein as the insert coupling and the body coupling are pushed toward each other the insert seal member contacts the body seal member and pushes the body seal member toward the opposite end of the body housing.
6. The fluid coupling system of claim 4 , wherein as the insert coupling and the body coupling are pushed toward each other the insert seal member and the body seal member each slide along the body stem and, in a fully coupled configuration, the insert seal member and the body seal member are each positioned on the body stem while the lateral opening is unobstructed and open to the internal space of the insert housing.
7. The fluid coupling system of claim 1 , wherein the body further comprises a latch member movably coupled to the body housing and defining an ovular opening configured to receive a front portion of the insert housing.
8. The fluid coupling system of claim 7 , and the latch member includes a groove engagement portion position to engage in a circumferential groove when the insert coupling and the body coupling are fully coupled together.
9. An insert coupling comprising:
an insert housing defining an internal space, the insert housing having a front face and an opposite end configured for connection to a first fluid carrying component;
an insert valve member slidably disposed within the internal space of the insert housing, the insert valve member including a projection;
an insert seal member attached to the front face of the insert housing and defining a bore; and
an insert spring disposed within the internal space of the insert housing and arranged to bias the insert valve member against the insert seal member such that the projection is within the bore and such that a front face of the insert valve member is planar with a forward-facing surface of the insert seal member.
10. The insert coupling of claim 9 , wherein the insert housing defines a circumferential outer groove.
11. The insert coupling of claim 9 , wherein the opposite end of the insert housing is engaged with a termination member configured for interconnecting the insert coupling with a tube.
12. The insert coupling of claim 11 , wherein the termination member is configured to be snapped into engagement with the insert housing.
13. The insert coupling of claim 11 , further comprising a seal disposed between the termination member and the insert housing to provide a fluid-tight seal therebetween.
14. A body coupling comprising;
a body housing defining an internal space, the body housing having a front end configured to receive a front end portion of an insert housing and an opposite end configured for connection to a second fluid carrying component;
a body stem extending within the internal space of the body housing, the body stem defining a central lumen and a lateral opening in fluid communication with the central lumen;
a body seal member slidably disposed within the internal space of the body housing, the body seal member defining a bore in which the body stem is slidably received; and
a body spring disposed within the internal space of the body housing and arranged to bias the body seal member to a position in which the bore of the body seal member seals the lateral opening of the body stem and in which a forward-facing surface of the body seal member and a front face of the body stem are planar with each other.
15. The body coupling of claim 14 , wherein the body stem defines the lateral opening and a second lateral opening, the lateral opening and the second lateral opening in fluid communication with the central lumen.
16. The body coupling of claim 14 , wherein the body further comprises a latch member movably coupled to the body housing and defining an ovular opening configured to receive a front portion of an insert coupling to be mated with the body coupling.
17. The body coupling of claim 14 , wherein the opposite end of the body housing is engaged with a termination retainer that mechanically attaches the body stem to the body housing.
18. The body coupling of claim 14 , further comprising a termination member, and wherein the termination member and the body stem are unitarily constructed.
19. The body coupling of claim 14 , further comprising a pair of latch members that are pivotably attached to the body housing.
20. A body coupling comprising:
a body housing defining an internal space, the body housing having a front end configured to receive a front end portion of an insert housing and an opposite end configured for connection to a second fluid carrying component;
a body stem extending within the internal space of the body housing, the body stem defining a central lumen and a lateral opening in fluid communication with the central lumen;
a body seal member slidably disposed within the internal space of the body housing, the body seal member defining a bore in which the body stem is slidably received; and
a body spring disposed within the internal space of the body housing and arranged to bias the body seal member to a position in which the bore of the body seal member seals the lateral opening of the body stem,
wherein the opposite end of the body housing is engaged with a termination retainer that mechanically attaches the body stem to the body housing, and
wherein the termination retainer is a cylindrical member that snaps into engagement with the body housing.