Devices, systems and methods for removal and replacement of a catheter for an implanted access port

1. A medical device comprising:

an implantable access port including a fluid passage operable to introduce fluid to a host and/or remove fluid from the host, the fluid passage accessible through a fluid passage access opening; a needle configured to penetrate the host, wherein at least a portion of the fluid passage is defined by the needle;

an implantable catheter connectable with the access port, the catheter having a proximal end and a distal end;

wherein the catheter is connectable with the access port by a mechanical connection;

wherein the portion of the fluid passage defined by the needle is defined by a lumen of the needle;

wherein the catheter is insertable into the fluid passage of the access port, including the lumen of the needle, through the fluid passage access opening; and

wherein the catheter is advanceable through the fluid passage such that the catheter extends from the access port; a catheter insertion tool configured to insert the catheter into the access port through the fluid passage access opening and the fluid passage of the access port; and

wherein the catheter insertion tool is configured to engage the mechanical connection between the catheter and the access port.

2. The device of claim 1 wherein:

the catheter is removable from the access port through the fluid passage and the fluid passage access opening.

3. The device of claim 1 wherein:

the mechanical connection comprises at least one of a friction fit connection and a positive mechanical engagement connection.

4. The device of claim 3 wherein:

the positive mechanical engagement connection comprises an overlapping connection formed by a proximal end portion of the catheter and a portion of the access port.

5. The device of claim 4 wherein:

the overlapping connection is formed by a flange of the catheter overlapping with a shoulder of the access port.

6. The device of claim 3 wherein:

the friction fit connection comprises a press-fit connection formed by a proximal end portion of the catheter and a portion of the access port.

7. The device of claim 6 wherein:

the press-fit connection is formed by at least one deformable retention element of the catheter.

8. The device of claim 1 wherein:

the access port includes a housing; and

the mechanical connection is formed with the housing and/or within the access port.

9. The device of claim 1 wherein:

the catheter is connectable with the access port within the fluid passage of the access port.

10. The device of claim 1 wherein:

the catheter insertion tool is configured to operate with a guidewire.

11. The device of claim 1 further comprising:

a catheter removal tool configured to remove the catheter from the access port through the fluid passage and the fluid passage access opening of the access port.

12. The device of claim 11 wherein:

the catheter removal tool is further configured to disengage the mechanical connection between the catheter and the access port.

13. The device of claim 12 wherein:

the catheter removal tool is configured to disengage the mechanical connection between the catheter and the access port by pulling the catheter out of engagement with the access port in a presence of a pulling force applied to the catheter removal tool.

14. The device of claim 11 wherein:

the catheter removal tool is configured to operate with a guidewire.

15. The device of claim 11 wherein:

the catheter removal tool is connectable with the catheter by a mechanical connection with the catheter.

16. The device of claim 15 wherein:

the mechanical connection comprises at least one of a friction fit connection and a positive mechanical engagement connection.

17. The device of claim 15 wherein:

the catheter removal tool comprises a distal end portion;

the catheter comprises a proximal end portion; and

the catheter removal tool is connectable with the catheter by the distal end portion of the catheter removal tool forming the mechanical connection with the proximal end portion of the catheter.

18. The device of claim 17 wherein:

the distal end portion of the catheter comprises a tip body;

the tip body comprises at least one tip body engagement element;

the at least one tip body engagement element forms the mechanical connection with the proximal end portion of the catheter.

19. The device of claim 18 wherein:

the at least one tip body engagement element comprises an engagement barb.

20. The device of claim 18 wherein:

the catheter comprises a catheter tubular body and a catheter lumen; and

the at least one tip body engagement element forms the mechanical connection with the catheter tubular body.

21. The device of claim 20 wherein:

the at least one tip body engagement element forms the mechanical connection with the catheter tubular body within the catheter lumen.

22. The device of claim 1 wherein:

the catheter insertion tool is configured to engage the mechanical connection of the catheter and the access port by pushing the catheter into engagement with the access port in a presence of a pushing force applied to the catheter insertion tool.

23. The device of claim 22 wherein:

the catheter insertion tool comprises a distal end portion, the distal end portion comprises a tip body;

the tip body comprises tip body annular flange;

the catheter comprises a catheter annular flange; and

the tip body annular flange is configured to push against the catheter annular flange in the presence of the pushing force.