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 a fluid reservoir;
moving an actuator from a first position to a second position, including moving a first sealing member away from a second sealing member a first distance, to create a negative pressure in the fluid reservoir, the fluid reservoir at least partially defined by the first sealing member and the second sealing member;
receiving a first volume of bodily-fluid into the fluid reservoir;
after the first volume of bodily-fluid has been received into the fluid reservoir, moving the actuator a second distance to engage a flow control mechanism and move the flow control mechanism from a first configuration to a second configuration, the first configuration operable to allow bodily-fluid to flow from the patient to the fluid reservoir, the second configuration operable to fluidically isolate the first volume of bodily-fluid in the fluid reservoir and to allow bodily-fluid to flow from the patient through the parenteral sampling device and to an outlet port.
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Accused Products
Abstract
An apparatus includes a housing, a flow control mechanism, and an actuator. At least a portion of the flow control mechanism is movably disposed within the housing. The apparatus further includes an inlet port and an outlet port, and defines a fluid reservoir. The outlet port is fluidically coupled to a second fluid reservoir and is fluidically isolated from the first fluid reservoir. The actuator is configured to move the flow control mechanism between a first configuration, in which the inlet port is placed in fluid communication with the fluid reservoir such that the fluid reservoir receives a first flow of bodily-fluid, and a second configuration, in which the inlet port is placed in fluid communication with the outlet port.
151 Citations
23 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 a fluid reservoir; moving an actuator from a first position to a second position, including moving a first sealing member away from a second sealing member a first distance, to create a negative pressure in the fluid reservoir, the fluid reservoir at least partially defined by the first sealing member and the second sealing member; receiving a first volume of bodily-fluid into the fluid reservoir; after the first volume of bodily-fluid has been received into the fluid reservoir, moving the actuator a second distance to engage a flow control mechanism and move the flow control mechanism from a first configuration to a second configuration, the first configuration operable to allow bodily-fluid to flow from the patient to the fluid reservoir, the second configuration operable to fluidically isolate the first volume of bodily-fluid in the fluid reservoir and to allow bodily-fluid to flow from the patient through the parenteral sampling device and to an outlet port. - View Dependent Claims (2, 3, 4)
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5. A method for procuring bodily-fluid samples using a parenteral sampling device, the device including a needle having a lumen configured for insertion into the patient, and a fluid reservoir fluidically coupleable to 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; moving an actuator a first distance, including moving a first sealing member away from a second sealing member, to increase the volume of the fluid reservoir and to create a negative pressure in the fluid reservoir, the fluid reservoir at least partially defined by the first sealing member and the second sealing member; receiving a first volume of bodily-fluid into the fluid reservoir; moving the actuator a second distance to engage a flow control mechanism and move the flow control mechanism from a first configuration to a second configuration, the first configuration operable to allow bodily-fluid to flow through a first flow path from the needle to the fluid reservoir, the second configuration operable to allow bodily-fluid to flow through a second flow path from the needle to a sample reservoir. - View Dependent Claims (6, 7, 8, 21)
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9. 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 operable to selectively control a fluid flow between the inlet port and at least one of a pre-sample reservoir and a sample reservoir, the method comprising:
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establishing fluid communication between the patient and the inlet port; moving the actuator from a first position to a second position, including moving a first sealing member away from a second sealing member a first distance, to create a suction force in the pre-sample reservoir operable to draw a first volume of bodily-fluid from the patient through the inlet port to the pre-sample reservoir, the pre-reservoir at least partially defined by the first sealing member and the second sealing member; moving the actuator from the second position to a third position to divert the flow of bodily-fluid from the patient through the inlet port to a sample reservoir and to fluidically isolate the first volume of bodily-fluid in the pre-sample reservoir. - View Dependent Claims (10, 11, 12, 13, 14)
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15. 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, a pre-sample reservoir fluidically coupleable to the inlet port, an outlet port configured to be fluidically coupled to the inlet port and a sample reservoir, and a flow control mechanism operable to selectively control fluid flow between the inlet port and at least one of the outlet port and the pre-sample reservoir, the method comprising:
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establishing fluid communication between the patient and the inlet port; moving the flow control mechanism a first distance, including moving a first sealing member away from a second sealing member, to create a negative pressure in the pre-sample reservoir and to withdraw a predetermined volume of bodily-fluid into the pre-sample reservoir, the fluid reservoir at least partially defined by the first sealing member and the second sealing member; moving the flow control mechanism a second distance to fluidically isolate the first volume of bodily-fluid in the pre-sample reservoir and establish fluid communication between the inlet port and the outlet port. - View Dependent Claims (16, 17, 18, 19, 20, 22, 23)
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Specification