US 12,478,765 B2
Catheter system and method of introducing an intravenous catheter into a patient
Zachary Holt, Cincinnati, OH (US)
Assigned to Northward Ventures, LLC, Cincinnati, OH (US)
Filed by Northward Ventures, LLC, Cincinnati, OH (US)
Filed on Jan. 4, 2024, as Appl. No. 18/403,825.
Application 18/403,825 is a continuation of application No. 17/123,312, filed on Dec. 16, 2020, granted, now 11,896,786.
Application 17/123,312 is a continuation of application No. 16/675,569, filed on Nov. 6, 2019, granted, now 10,898,689, issued on Jan. 26, 2021.
Claims priority of provisional application 62/757,806, filed on Nov. 9, 2018.
Prior Publication US 2024/0131304 A1, Apr. 25, 2024
Int. Cl. A61M 25/06 (2006.01); A61M 25/09 (2006.01)
CPC A61M 25/0606 (2013.01) [A61M 25/0693 (2013.01); A61M 25/09041 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catheter system for accessing an anatomy of a patient, comprising:
a syringe including a first chamber and a distal syringe end portion, wherein the distal syringe end portion includes a distal syringe connection and defines a conduit distally extending to a distal syringe opening such that the conduit fluidly connects the first chamber to the distal syringe opening;
an access needle defining a needle lumen longitudinally extending therethrough and including a needle adapter having a proximal needle connection and a distal needle connection, wherein the proximal needle connection is configured to releasably secure to the distal syringe connection such that the access needle distally projects from the distal syringe end portion; and
a pliable catheter including a proximal catheter connection configured to releasably secure to the distal needle connection of the needle adapter such that the access needle is received within the pliable catheter, wherein the pliable catheter is configured to be released relative to the access needle such that the access needle guides movements of the pliable catheter for introducing the pliable catheter into the patient,
wherein the distal syringe connection and the proximal needle connection threadably engage and define a syringe coupling threaded in a first direction, and
wherein the distal needle connection and the proximal catheter connection threadably engage and define a distal catheter coupling threaded in a reversed, second direction opposite of the first direction for rotatably isolating removal of the pliable catheter from the access needle.