Catheter coupler and methods of exchanging catheters

1. A catheter exchange system, comprising:

a second catheter comprising:

a tubular body having a first end and a second end; and

a lumen extending from the first end of the tubular body to the second end of the tubular body; and

a coupler comprising:

a body having a first end and a second end; and

at least one barb disposed at the first end of the coupler and at least one barb disposed at the second end of the coupler,

wherein the coupler is configured to couple to a first catheter and the second catheter by coupling the first end of the coupler to the first catheter and coupling the second end of the coupler to the second catheter, wherein the coupler is configured to use during catheter replacement procedure to replace the first catheter with the second catheter, wherein the first catheter is configured to currently be disposed in a patient,

wherein the coupler has a central body portion that is disposed between the at least one barb disposed on the first end and the at least one barb disposed on the second end, wherein the central body portion is flexible and allows the central body portion to bend, and wherein the central body portion includes a plurality of flex slots disposed in the body of the coupler that partially extend circumferentially around the central body portion.

2. The catheter exchange system of claim 1 , wherein the first end of the coupler is coupled to the first catheter by inserting the first end of the coupler into a lumen of the first catheter.

3. The catheter exchange system of claim 2 , wherein the second end of the coupler is coupled to the second catheter by inserting the second end of the coupler into the lumen of the second catheter.

4. The catheter exchange system of claim 1 , wherein the coupler further comprises at least two barbs at the first end and at least two barbs at the second end.

5. The catheter exchange system of claim 1 , further comprising a coupler handle, wherein the coupler handle is configured to grip the coupler and enable a user to insert the coupler into one of a lumen of the first catheter and the lumen of the second catheter.

6. The catheter exchange system of claim 5 , wherein the coupler handle disengages from the coupler with a force less than an amount of force to remove the coupler from the lumen of the catheter one of the lumen of the first catheter and the lumen of the second catheter.

7. The catheter exchange system of claim 5 , wherein the coupler handle includes a plurality of arms that extend from the coupler handle to grip the barbs of the coupler, and

wherein each arm includes a lug that engages with the barbs of the coupler forming a snap fit between the coupler handle and the coupler.

8. The catheter exchange system of claim 5 , wherein the coupler handle includes a well that grips the coupler, and

wherein the well includes a lug that engages with the barbs of the coupler forming a snap fit between the coupler handle and the coupler.

9. The catheter exchange system of claim 1 , wherein the coupler is pre-coupled to the second catheter.

10. A method for exchanging a first catheter disposed within a patient with a second catheter, the method comprising:

coupling a first end of a coupler to the first catheter;

coupling a second end of the coupler to the second catheter, such that the first catheter is coupled to the second catheter via the coupler; and

removing the first catheter from the patient and advancing the second catheter within the patient by displacing the first catheter, such that the displacement of the first catheter removes the first catheter from the patient and simultaneously advances the second catheter within the patient.

11. The method of claim 10 , wherein coupling the first end of the coupler to the first catheter is accomplished by inserting the first end of the coupler into a lumen of the first catheter.

12. The method of claim 10 , wherein coupling the second end of the coupler to the second catheter is accomplished by inserting the second end of the coupler into a lumen of the second catheter.

13. The method of claim 10 , further comprising inserting a guidewire through the first catheter, the coupler, and the second catheter.

14. A catheter kit comprising:

a second catheter that includes a lumen extending from a first end to a second end of the catheter; and

a coupler that includes barbs disposed at least at a first end and a second end of the coupler,

wherein the coupler is configured to couple to a first catheter previously disposed in a patient and the second catheter by coupling the first end of the coupler to the first catheter and coupling the second end of the coupler to the second catheter,

wherein the coupler has a central body portion that is disposed between the at least one barb disposed on the first end and the at least one barb disposed on the second end, and

wherein the central body portion is flexible and allows the central body portion to bend.

15. The catheter kit of claim 14 , further comprising a coupler handle coupled to the coupler that is configured to be detached from the coupler with a predetermined amount of force.

16. The catheter kit of claim 14 , wherein the coupler is pre-coupled to the catheter.

17. The catheter exchange system of claim 1 , wherein the central body portion comprises a flange with a plurality of flex slots disposed on both sides of the flange.