Fluid diversion mechanism for bodily-fluid sampling
First Claim
1. A method of obtaining a bodily-fluid sample from a patient using a parenteral sampling device, the method comprising:
- establishing fluid communication between the patient and an inlet port of the parenteral sampling device;
disposing a flow control mechanism in a first configuration, the first configuration operable to allow bodily-fluid to flow from the patient, through the inlet port, and into a fluid reservoir;
moving an actuator a first distance to form a negative pressure in the fluid reservoir, the actuator including a seal member that defines a portion of the fluid reservoir such that the moving of the actuator the first distance moves the seal member from a first position toward a second position to form the negative pressure in the fluid reservoir;
receiving a first volume of bodily-fluid into the fluid reservoir while the flow control mechanism is in the first configuration;
moving the actuator a second distance, after the first volume of bodily-fluid has been received into the fluid reservoir, to move the flow control mechanism from the first configuration to a second configuration, the second configuration operable to (1) fluidically isolate the first volume of bodily-fluid in the fluid reservoir, and (2) allow bodily-fluid to flow from the patient to a sample reservoir.
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Accused Products
Abstract
An apparatus includes a housing, a fluid reservoir, a flow control mechanism, and an actuator. The housing defines an inner volume and has an inlet port that can be fluidically coupled to a patient and an outlet port. The fluid reservoir is disposed in the inner volume to receive and isolate a first volume of a bodily-fluid. The flow control mechanism is rotatable in the housing from a first configuration, in which a first lumen places the inlet port is in fluid communication with the fluid reservoir, and a second configuration, in which a second lumen places the inlet port in fluid communication with the outlet port. The actuator is configured to create a negative pressure in the fluid reservoir and is configured to rotate the flow control mechanism from the first configuration to the second configuration after the first volume of bodily-fluid is received in the fluid reservoir.
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Citations
20 Claims
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1. A method of obtaining a bodily-fluid sample from a patient using a parenteral sampling device, the method comprising:
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establishing fluid communication between the patient and an inlet port of the parenteral sampling device; disposing a flow control mechanism in a first configuration, the first configuration operable to allow bodily-fluid to flow from the patient, through the inlet port, and into a fluid reservoir; moving an actuator a first distance to form a negative pressure in the fluid reservoir, the actuator including a seal member that defines a portion of the fluid reservoir such that the moving of the actuator the first distance moves the seal member from a first position toward a second position to form the negative pressure in the fluid reservoir; receiving a first volume of bodily-fluid into the fluid reservoir while the flow control mechanism is in the first configuration; moving the actuator a second distance, after the first volume of bodily-fluid has been received into the fluid reservoir, to move the flow control mechanism from the first configuration to a second configuration, the second configuration operable to (1) fluidically isolate the first volume of bodily-fluid in the fluid reservoir, and (2) allow bodily-fluid to flow from the patient to a sample reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for procuring bodily-fluid samples from a patient using a parenteral sampling device, the device including an inlet port configured to be fluidically coupled to the patient, an actuator, and a flow control mechanism defining a first fluid flow path and a second fluid flow path and being operable to selectively control fluid flow between the inlet port and at least one of a pre-sample reservoir and an outlet port, the method comprising:
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establishing fluid communication between the patient and the inlet port; moving the actuator a first distance while the flow control mechanism is in a first configuration to move a seal member from a first position toward a second position to create a suction force in the pre-sample reservoir, the suction force operable to draw a first volume of bodily-fluid from the patient through the inlet port and the first fluid flow path and into the pre-sample reservoir; moving the actuator a second distance to transition the flow control mechanism from the first configuration to a second configuration, the second configuration operable to divert the flow of bodily-fluid from the patient through the inlet port and the second fluid flow path to a sample reservoir, the first volume of bodily-fluid being fluidically isolated in the pre-sample reservoir when the flow control mechanism is in the second configuration. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for procuring bodily-fluid samples from a patient using a parenteral sampling device, the device including a needle configured for insertion into the patient, an actuator including a seal member defining a portion of a fluid reservoir, and a flow control mechanism configured to selectively place the fluid reservoir in fluid communication with the needle, the method comprising:
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inserting the needle into the patient; establishing fluid communication between the needle and the fluid reservoir; disposing the flow control mechanism in a first configuration, the first configuration operable to allow bodily-fluid to flow from the patient, through a first fluid flow path, and into the fluid reservoir; exerting an activation force on a portion of the actuator to move the seal member from a first position, in which the fluid reservoir has a first volume, toward a second position, in which the fluid reservoir has a second volume greater than the first volume, the increase in volume of the fluid reservoir operable to allow a predetermined volume of bodily-fluid to flow into the fluid reservoir; transitioning the flow control mechanism from the first configuration to a second configuration in response to the seal member being placed in the second position, the flow control mechanism operable to allow bodily-fluid to flow through a second fluid flow path from the needle to a sample reservoir when the flow control mechanism is in the second configuration. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification