Activator attachment for blood control catheters

1. A catheter assembly system comprising:

a catheter adapter having an inner lumen extending between a proximal opening of the catheter adapter and a distal end of the catheter adapter, the proximal opening of the catheter adapter having an inner diameter;

a septum disposed within and selectively sealing the inner lumen;

a septum activator disposed within the inner lumen at a location proximal to the septum and having a proximal opening, the proximal opening of the septum activator having an inner diameter less than the inner diameter of the catheter adapter, the septum activator being configured to advance distally through a slit in the septum; and

an activator attachment comprising:

a proximal end having a proximal opening;

a connector portion comprising a set of threads;

a probe member having an outer diameter less than the inner diameter of the proximal opening of the catheter adapter and greater than the inner diameter of proximal opening of the septum activator; and

an extension member that extends from a distal end of the probe member, wherein an unrestricted lumen extends from the proximal opening of the activator attachment through the probe member and the extension member, the extension member having an outer diameter less than the inner diameter of the proximal opening of the septum activator, wherein the distal end of the probe member forms a distal-facing ridge that extends radially outward from the extension member, wherein in response to the activator attachment being inserted into the proximal opening of the catheter adapter a first amount, the probe member inserts into the proximal opening of the catheter adapter, the distal-facing ridge contacts a proximal end of the septum activator, the extension member inserts into the proximal opening of the septum activator, the unrestricted lumen is in fluid communication with the inner lumen of the catheter adapter, and the septum remains closed,

wherein in response to the connector portion being threaded to the proximal end of the catheter adapter such that the activator attachment is inserted into the proximal opening of the catheter adapter a second amount, the distal-facing ridge forces the septum activator distally through the septum, wherein when the extension member inserts into the proximal opening of the septum activator, a distal end of the extension member is disposed within the inner lumen of the catheter adapter.

2. The catheter assembly system of claim 1 , wherein the catheter adapter forms a female luer fitting.

3. The catheter assembly system of claim 2 , wherein the female luer fitting is a luer lock fitting.

4. The catheter assembly system of claim 2 , wherein the female luer fittings is a luer slip fitting.

5. The catheter assembly system of claim 1 , wherein an outer surface of a proximal portion of the activator attachment includes a channel portion.

6. The catheter assembly system of claim 5 , wherein the channel portion includes one or more grip portions.

7. The catheter assembly system of claim 1 , wherein the connector portion of the activator attachment includes a luer collar that extends around the probe member.

8. The activator attachment of claim 7 , wherein the luer collar is a luer lock collar or a luer slip collar.

9. The catheter assembly system of claim 1 , wherein a diameter of the unrestricted lumen increases from a distal opening of the activator attachment to a proximal opening of the activator attachment.

10. The catheter assembly system of claim 1 , wherein the probe member forms a male luer taper.

11. The catheter assembly system of claim 1 , wherein a proximal end of the catheter adapter includes a flange and the connector portion includes a collar that extends around the flange to couple the activator attachment to the catheter adapter.

12. The catheter assembly system of claim 1 , wherein a sidewall of the septum activator includes one or more openings, and when the connector portion is threaded to the proximal end of the catheter adapter such that the activator attachment is inserted into the proximal opening of the catheter adapter the second amount, the extension member at least partially covers the one or more openings.

13. The catheter assembly system of claim 1 , further comprising a catheter coupled to a distal end of the catheter adapter.

14. The catheter assembly of claim 1 , wherein in response to the activator attachment being inserted into the proximal opening of the catheter adapter the first amount, the catheter adapter contacts the set of threads.