Catheter hub

1. A catheter hub, comprising:

a distal assembly including a distal hub member adapted to be fixedly attached to an outer catheter;

a proximal assembly including a proximal hub member adapted to be fixedly attached to an inner catheter disposed through the outer catheter, and wherein an outer lateral surface of the proximal assembly includes a planar top surface of the proximal assembly and the proximal hub member includes a planar bottom surface that engages the planar top surface of the proximal assembly when the proximal hub member is detachably attached to the outer lateral surface of the proximal assembly along a longitudinal axis of the proximal assembly that extends between a distal end of the proximal assembly and a proximal end of the proximal assembly that is further away from the distal assembly than the distal end of the proximal assembly; and

an elongate member connecting the proximal and distal assemblies such that the proximal and distal assemblies are capable of longitudinal translation relative to one another,

wherein the proximal and distal hub members interlock with one another when the proximal and distal assemblies are brought together.

2. The catheter hub of claim 1 , wherein the distal hub member is detachable from the distal assembly.

3. The catheter hub of claim 1 , wherein at least one of the proximal and distal assemblies is slidably attached to the elongate member.

4. The catheter hub of claim 1 , wherein the proximal and distal hub members interlock with one another by a type of connection selected from the group of types of connections consisting of: a snap fit connection, a threaded connection, and a quick-connect connection.

5. The catheter hub of claim 1 , wherein at least one of the elongate member, the proximal assembly, and the distal assembly includes a translation lock to secure the proximal and distal assemblies a fixed distance apart.

6. A catheter hub, comprising:

a distal hub member adapted to be fixedly attached to an outer catheter;

a proximal hub member adapted to be fixedly attached to an inner catheter disposed through the outer catheter;

a proximal member;

a distal member; and

an elongate member connecting the proximal and distal members, wherein at least one of the proximal and distal members is slidably attached to the elongate member,

wherein the distal member is attached to the distal hub member and the proximal member is attached to the proximal hub member, and wherein an outer lateral surface of the proximal member includes a planar top surface of the proximal member and the proximal hub member includes a planar bottom surface that engages the planar top surface of the proximal member when the proximal hub member is detachably attached to the outer lateral surface of the proximal member along a longitudinal axis of the proximal member that extends between a distal end of the proximal member and a proximal end of the proximal member that is further away from the distal member than the distal end of the proximal member,

and wherein the proximal and distal hub members interlock with one another when the proximal and distal members are brought together.

7. The catheter hub of claim 6 , wherein the proximal and distal hub members interlock with one another by a type of connection selected from the group of types of connections consisting of: a snap fit connection, a threaded connection, and a quick-connect connection.

8. The catheter hub of claim 6 , wherein the proximal hub member includes a plurality of first apertures adapted to accommodate a plurality of tubes and a second aperture adapted to accommodate the inner catheter.

9. The catheter hub of claim 6 , wherein the distal member is detachably attached to the distal hub member.