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Syringe-based fluid diversion mechanism for bodily fluid sampling

  • US 9,999,383 B2
  • Filed: 04/29/2014
  • Issued: 06/19/2018
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
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1. A syringe-based device for parenterally-procuring bodily fluid samples with reduced contamination from a patient, the device comprising:

  • a housing including a proximal end portion and a distal end portion and defining an inner volume therebetween, the proximal end portion being substantially open and the distal end portion having a port configured to be coupled to a lumen-defining device for receiving bodily fluid from the patient;

    a pre-sample reservoir fluidically coupleable to the port and configured to receive and isolate a first volume of bodily fluid withdrawn from the patient; and

    an actuator mechanism at least partially disposed in the inner volume of the housing, the actuator mechanism having a proximal end portion and a distal end portion, the distal end portion including a sealing member and the proximal end portion including a first protrusion and a second protrusion configured to selectively engage with the first protrusion to substantially limit a proximal movement of the second protrusion relative to the first protrusion, and configured to move through the substantially open proximal end portion of the housing when receiving the bodily fluid from the patient into a sample reservoir, the sealing member defining a channel extending from a distal end to a proximal end of the sealing member, the actuator mechanism configured to move between a first configuration in which the bodily fluid can flow from the port to the pre-sample reservoir through the channel in the sealing member, and a second configuration in which the bodily fluid can flow from the port to the sample reservoir, the sample reservoir defined at least in part by the sealing member and the housing.

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