A catheter system , comprising: a catheter assembly comprising a catheter adapter and a catheter extending distally from the catheter adapter ; a needle assembly coupled to the catheter assembly, the needle assembly comprising a needle hub and an introducer needle , wherein the needle hub is coupled to a proximal end of the catheter adapter and wherein a proximal end of the introducer needle is secured within the needle hub ; and a housing retained within a lumen of the catheter adapter , the housing comprising: a first resilient element , comprising a proximal end, a distal end , a first central bore , and a coupling element ; a second resilient element proximal to the first resilient element , wherein the second resilient element comprises a proximal end, a distal end, a second central bore , and another coupling element , wherein the coupling element and the other coupling element are coupled together, wherein the first central bore and the second central bore form a central passageway configured to receive a longitudinal shaft of the introducer needle therethrough, wherein the first and second resilient elements are configured to form a V-shape in response proximal retraction of the introducer needle proximal to a distal wall of the first resilient element . a catheter assembly comprising a catheter adapter and a catheter extending distally from the catheter adapter ; a needle assembly coupled to the catheter assembly, the needle assembly comprising a needle hub and an introducer needle , wherein the needle hub is coupled to a proximal end of the catheter adapter and wherein a proximal end of the introducer needle is secured within the needle hub ; and a housing retained within a lumen of the catheter adapter , the housing comprising: a first resilient element , comprising a proximal end, a distal end , a first central bore , and a coupling element ; a second resilient element proximal to the first resilient element , wherein the second resilient element comprises a proximal end, a distal end, a second central bore , and another coupling element , wherein the coupling element and the other coupling element are coupled together, wherein the first central bore and the second central bore form a central passageway configured to receive a longitudinal shaft of the introducer needle therethrough, wherein the first and second resilient elements are configured to form a V-shape in response proximal retraction of the introducer needle proximal to a distal wall of the first resilient element . a first resilient element , comprising a proximal end, a distal end , a first central bore , and a coupling element ; a second resilient element proximal to the first resilient element , wherein the second resilient element comprises a proximal end, a distal end, a second central bore , and another coupling element , wherein the coupling element and the other coupling element are coupled together, wherein the first central bore and the second central bore form a central passageway configured to receive a longitudinal shaft of the introducer needle therethrough, wherein the first and second resilient elements are configured to form a V-shape in response proximal retraction of the introducer needle proximal to a distal wall of the first resilient element . <EOS>