A catheter assembly is disclosed having a catheter adapter and a needle hub. The catheter adapter has an inner lumen with a septum located within the inner lumen. An introducer needle is inserted through the inner lumen. A septum activator also located within the inner lumen, such that a distal end
A catheter assembly is disclosed having a catheter adapter and a needle hub. The catheter adapter has an inner lumen with a septum located within the inner lumen. An introducer needle is inserted through the inner lumen. A septum activator also located within the inner lumen, such that a distal end of the septum activator contacts the septum. The septum activator has an internal cavity and a cavity seal forming a surface of the internal cavity.
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1. A catheter assembly, comprising: a catheter adapter having an inner lumen, the inner lumen including an annular ridge;a septum disposed within a portion of the inner lumen;an introducer needle extending through the inner lumen of the catheter adapter, the introducer needle having an outer diamete
1. A catheter assembly, comprising: a catheter adapter having an inner lumen, the inner lumen including an annular ridge;a septum disposed within a portion of the inner lumen;an introducer needle extending through the inner lumen of the catheter adapter, the introducer needle having an outer diameter, the introducer needle having a notch disposed on the distal end of the introducer needle, the notch being positioned at a notch distance from a distal tip of the introducer needle; anda septum activator disposed within the inner lumen of the catheter adapter proximal to the septum, the septum activator comprising a sleeve portion and a proximal portion, the sleeve portion forming a distal portion of the septum activator, the sleeve portion comprising an inner lumen having an internal diameter approximately equal to the outer diameter of the introducer needle along the length of the sleeve portion, the septum activator further including one or more flushing fins positioned on an outer surface of the septum activator so as to contact the annular ridge to limit the proximal movement of the septum activator, the annular ridge being positioned such that the distal end of the septum activator remains in contact with the septum when in a proximal-most position, the sleeve portion having a length greater than the notch distance so that, when the introducer needle is withdrawn proximally, the notch remains contained within the sleeve portion until after the distal tip of the introducer needle is drawn through the septum and into the sleeve portion. 2. The catheter assembly of claim 1, wherein the septum includes a seal interposed between an outer surface of the sleeve portion of the septum activator and an inner surface of the septum. 3. The catheter assembly of claim 2, wherein the inner surface of the septum is an inner chamber. 4. The catheter assembly of claim 3, wherein the inner chamber is present prior to activation of the catheter assembly. 5. The catheter assembly of claim 1, wherein a proximal end of the septum further comprises an annular ridge that extends inward, the annular ridge having an inner diameter substantially equal to the outer diameter of the septum activator. 6. A catheter assembly comprising: a catheter adapter having an inner lumen, the inner lumen including an annular ridge that defines a translating groove;a septum disposed within the inner lumen distal to the translating groove, the septum including a distal barrier and an annular ridge that includes an inward extension;a septum activator disposed within the inner lumen proximal to the septum, the septum activator having a sleeve portion at a distal end, the sleeve portion having an outer diameter that is substantially the same as the inner diameter of the inward extension thereby forming a seal between the sleeve portion and the inward extension of the septum, the septum activator including one or more flushing fins that extend from an outer surface of the septum activator, the septum activator being positioned with the one or more flushing fins distal to the annular ridge of the inner lumen such that when the septum activator slides within the translating groove, the annular ridge contacts the one or more flushing fins to limit the proximal movement of the septum activator, wherein the sleeve portion of the septum activator has a length that causes a distal end of the septum activator to be contained within the inward extension of the septum proximal to the distal barrier when the one or more flushing fins contact the annular ridge of the inner lumen; andan introducer needle having an outer diameter that is substantially the same as the inner diameter of the sleeve portion of the septum activator, the introducer needle including a notch at a distance from a distal tip of the introducer needle that causes the notch to be contained within the sleeve portion when the distal tip of the introducer needle is positioned proximal to the distal barrier of the septum. 7. The catheter assembly of claim 6, wherein the inward extension of the septum is spaced from the distal barrier thereby forming an inner chamber for collecting blood that flows out from the distal tip of the introducer needle when the introducer needle is positioned proximal to the distal barrier of the septum, and wherein the seal between the inward extension and the sleeve portion prevents the blood from exiting the inner chamber. 8. The catheter assembly of claim 7, wherein the distance between the notch and the distal tip of the introducer needle is less than the length of the sleeve portion of the septum activator. 9. The catheter assembly of claim 7, wherein the inner lumen includes a distal annular ridge that defines a distal end of the translating groove, the distal annular ridge contacting the one or more flushing fins to limit the distal movement of the septum activator. 10. The catheter assembly of claim 7, wherein the septum activator includes a proximal portion that has an inner diameter that is greater than the inner diameter of the sleeve portion. 11. The catheter assembly of claim 10, wherein an outer diameter of the proximal portion of the septum activator is greater than the outer diameter of the sleeve portion. 12. The catheter assembly of claim 7, wherein the distal barrier of the septum includes one or more slits. 13. A catheter assembly comprising: a catheter adapter;a septum disposed within an inner lumen of the catheter adapter, the septum having a C-shaped cross-section that includes a distal barrier and an inward extension positioned proximal to the distal barrier to form an inner chamber, the inward extension having a first inner diameter;a septum activator disposed within the inner lumen of the catheter adapter, the septum activator having a sleeve portion forming a distal end that is contained within the inner chamber, the sleeve portion having a first outer diameter that is substantially the same as the first inner diameter thereby forming a seal to prevent blood from flowing proximally out of the inner chamber, the septum activator further including one or more flushing fins that contact an annular ridge formed in the inner lumen to limit the proximal movement of the septum activator, wherein when the one or more flushing fins contact the annular ridge, the distal end of the sleeve portion is contained within the inner chamber; andan introducer needle having an outer diameter that is substantially the same as an inner diameter of the sleeve portion thereby preventing blood from flowing within the septum activator between an inner surface of the septum activator and an outer surface of the introducer needle. 14. The catheter assembly of claim 13, wherein the introducer needle includes a notch. 15. The catheter assembly of claim 14, wherein the notch is positioned at a distance from a distal tip of the introducer needle that is less than the length of the sleeve portion.
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