×

Methods and apparatus for selectively occluding the lumen of a needle

  • US 9,788,774 B2
  • Filed: 09/18/2014
  • Issued: 10/17/2017
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
Patent Images

1. A method for transferring fluid to or from a patient using a parenteral transfer device, the device including a housing defining a fluid flow path, a needle having a lumen in fluid communication with the fluid flow path and being configured for insertion into the patient, and an occlusion mechanism operable to selectively control fluid flow to or from a patient through the needle lumen and the fluid flow path, the occlusion mechanism includes an occlusion member disposed about at least a portion of the needle and configured to selectively obstruct the lumen of the needle during insertion into the patient, the method comprising:

  • disposing the occlusion member in a first position relative to the needle prior to insertion into the patient to place the occlusion mechanism in a first configuration in which the lumen of the needle is obstructed to prevent at least one of tissue, bodily fluid, and contaminants from entering the lumen;

    inserting the needle into the patient, the occlusion mechanism being in the first configuration as the needle is inserted into the patient;

    after the needle has been inserted into the patient, rotating the occlusion member from the first position to a second position to place the occlusion mechanism in a second configuration in which the lumen of the needle is unobstructed and the occlusion member is disposed outside of the fluid flow path; and

    transferring a volume of a fluid substantially free of tissue and contaminants between the patient and a fluid reservoir in fluid communication with the fluid flow path when the occlusion mechanism is in the second configuration.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×