Fluid diversion mechanism for bodily-fluid sampling

A device for obtaining from a patient bodily-fluid with reduced contamination, the device comprising:

• a housing having an inlet port configured to be placed in fluid communication with the patient and an outlet port configured to be placed in fluid communication with a sample reservoir;
• a fluid reservoir defined at least in part by a first inner surface of the housing, the fluid reservoir configured to receive an amount of the bodily-fluid withdrawn from the patient;
• a seal member disposed in the housing and at least partially defining the fluid reservoir;
• and
• an elastomeric member sized and configured to form a friction fit with a second inner surface of the housing, the elastomeric member having a first state in which (i) a first flow path places the inlet port in fluid communication with the fluid reservoir such that a negative pressure differential therebetween facilitates the bodily-fluid to flow from the inlet port toward the seal member, and (ii) a portion of a second flow path between the inlet port and the outlet port is obstructed by the elastomeric member,
• the elastomeric member having a second state in which the second flow path is unobstructed by the elastomeric member such that a negative pressure differential between the outlet port and the inlet port facilitates a subsequent amount of the bodily-fluid to flow from the inlet port to the outlet port,
• the device configured to transition from the first state to the second state after the fluid reservoir receives the amount of the bodily-fluid.

A device for obtaining from a patient bodily-fluid with reduced contamination, the device comprising:

• a housing having an inlet port configured to be placed in fluid communication with the patient and an outlet port configured to be placed in fluid communication with a sample reservoir, the housing defining a first flow path and a second flow path;
• a fluid reservoir defined at least in part by a first inner surface of the housing, the fluid reservoir configured to receive and contain the bodily-fluid withdrawn from the patient;
• a seal member disposed in the housing and at least partially defining the fluid reservoir;
• and
• an elastomeric member sized and configured to form a friction fit with a second inner surface of the housing, the elastomeric member having a first state in which a first negative pressure differential causes the bodily-fluid to flow from the inlet port, through the first flow path, and toward the seal member,
• the elastomeric member having a second state in which a second negative pressure differential causes the bodily-fluid to flow from the inlet port, through the second flow path, and to the outlet port.

A device for obtaining from a patient bodily-fluid with reduced contamination, the device comprising:

• a housing having an inlet port configured to be placed in fluid communication with the patient and an outlet port configured to be placed in fluid communication with a sample reservoir, the housing defining a first flow path and a second flow path;
• a fluid reservoir defined by an inner surface of the housing, the fluid reservoir configured to receive and contain an amount of the bodily-fluid withdrawn from the patient,
• an elastomeric member sized and configured to form a friction fit with the inner surface of the housing, the elastomeric member having a first state in which (i) the first flow path places the inlet port in fluid communication with the fluid reservoir such that a negative pressure differential therebetween causes a flow of the amount of the bodily-fluid from the inlet port and into the fluid reservoir, and (ii) a portion of the second flow path is obstructed by the elastomeric member,
• wherein after the fluid reservoir receives the amount of the bodily-fluid, the elastomeric member is configured to transition from the first state to a second state in which the second flow path places the inlet port in fluid communication with the outlet port such that a negative pressure differential therebetween causes a subsequent amount of the bodily-fluid to flow from the inlet port, through the second flow path, and to the outlet port.