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

• Current Assignee: Magnolia Medical Technologies Limited
• Original Assignee: Magnolia Medical Technologies Limited
• Inventors: Bullington, Gregory, Patton, Richard G., Miazga, Jay M., Gaw, Shan E.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): STILES, AMBER R.
• Application Number:
  US14/490,099
• Publication Number:
  US 20150250414A1
• Time in Patent Office: 1,125 Days
• Field of Search: 604 9301, 60416401, 60416402, 60416403, 60416406, 60416412, 60416601, 60416701, 60416706, 604264, 604272, 604274, 600567
• CPC Class Codes: A61B 5/150633 Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2205/0205 Materials having antiseptic or antimicrobial properties, e.g. silver compounds, rubber with sterilising agent
• CPC Class Codes: A61M 2205/0238 the material being a coating or protective layer
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 39/22 Valves or arrangement of valves A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/16804 Flow controllers
• CPC Class Codes: A61M 5/3291 Shafts with additional lateral openings

Abstract

A fluid transfer device for parenterally transferring fluid to and/or from a patient includes a housing, a needle, and an occlusion mechanism. The housing defines a fluid flow path and is couplable to a fluid reservoir. The needle has a distal end portion that is configured to be inserted into the patient and a proximal end portion that is configured to be fluidically coupled to the fluid flow path of the housing, and defines a lumen therebetween. The occlusion mechanism selectively controls a fluid flow between the needle and the fluid flow path. The occlusion mechanism includes an occlusion member that is movable between a first configuration where the lumen of the needle is obstructed during insertion into the patient and a second configuration where the lumen of the needle is unobstructed after the needle has been inserted into the patient allowing fluid transfer to or from the patient.

Claims

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.

2. The method of claim 1, wherein the occlusion member is manually rotated from the first position to the second position.

3. The method of claim 1, wherein the occlusion member is mechanically rotated from the first position to the second position.

4. The method of claim 1, wherein the occlusion member is automatically rotated from the first position to the second position.

5. The method of claim 1, wherein the needle includes a recessed portion fluidically isolated from the needle lumen, the recessed portion configured to receive and retain at least one of tissue, bodily fluid, and contaminants when the needle is inserted into the patient.