Catheter having an overmolded hub
View Patent ↗Catheters having an overmolded hub are disclosed. The overmolded catheter hubs may include one or more access hubs that are overmolded with an overmold material. The catheter hub may also be formed as a single piece from the overmold material. The overmolded construction can result in a stronger bond between the catheter body and the hub and can provide for access hubs having sufficient clarity for the observation of air bubbles in a contained fluid. The disclosed catheter hubs may also demonstrate improved balloon deflation rates when utilized with a catheter body having a distal balloon.
1. A catheter comprising:
an elongate flexible catheter body having a plurality of lumens including a first lumen and a second lumen, the flexible catheter body having a longitudinal axis extending between a proximal end and a distal end;
a first access hub and a second access hub, the first access hub being in fluid communication with the first lumen and the second access hub being in fluid communication with the second lumen; and
an overmold, the overmold overlapping and contacting at least a portion of the catheter body and at least a portion of the first and second access hubs, where the overmold maintains the spatial orientation of the catheter body to the hubs by coupling the catheter body and the hubs.
2. The catheter of claim 1 , where the catheter body includes a polyether block amide.
3. The catheter of claim 1 , where the lumens are formed from one or more longitudinal partitions.
4. The catheter of claim 1 , where the lumens have a substantially coaxial arrangement.
5. The catheter of claim 1 , where the lumens are defined by an outermost tube and at least one inner tube.
6. The catheter of claim 1 , where the lumens are defined by an outermost tube and a plurality of inner tubes.
7. The catheter of claim 1 , where the access hubs include female luer locks.
8. The catheter of claim 1 , where the access hubs include an amide.
9. The catheter of claim 8 , where the amide includes a nylon chemically modified to have an amorphous structure.
10. The catheter of claim 1 , where at least one of the access hubs has a luminous transmittance of at least about 60%.
11. The catheter of claim 8 , where at least one of the access hubs has a luminous transmittance of at least about 80%.
12. The catheter of claim 1 , further comprising at least one bridging structure, where the at least one bridging structure maintains the spatial orientation of the first access hub to the second access hub.
13. The catheter of claim 12 , where the at least one bridging structure includes at least one anchoring feature.
14. The catheter of claim 13 , where the at least one anchoring feature is selected from the group consisting of a hole, groove, protruding flange, recess, indentation, and combinations thereof.
15. The catheter of claim 13 , where the at least one anchoring feature includes a hole through the at least one bridging structure.
16. The catheter of claim 13 , where the at least one anchoring feature includes a groove in the surface of one or more of the access hubs.
17. The catheter of claim 13 , where the anchoring feature is at least partially filled by the overmold.
18. The catheter of claim 1 , where the overmold comprises at least one passageway providing fluid communication between the first lumen and the first access hub.
19. The catheter of claim 18 , where the overmold comprises at least one passageway providing fluid communication between the second lumen and the second access hub.
20. The catheter of claim 19 , where the passageway providing fluid communication between the second lumen and the second access hub includes a hollow insert.
21. The catheter of claim 1 , where the overmold comprises a cured resin.
22. The catheter of claim 21 , where the cured resin couples the plurality of lumens to the plurality of access hubs to provide fluid communication.
23. The catheter of claim 1 , where the overmold comprises a thermoplastic.
24. The catheter of claim 23 , where the thermoplastic couples the plurality of lumens to the plurality of access hubs to provide fluid communication.
25. The catheter of claim 23 , where the thermoplastic is selected from the group consisting of amides, polyurethanes, polycarbonates, polyesters, polyvinylchlorides, polyolefins, styrenics, and combinations thereof.
26. The catheter of claim 23 , where the thermoplastic includes an amide.
27. A catheter comprising:
an elongate flexible catheter body having a lumen, the flexible catheter body having a longitudinal axis extending between a proximal end and a distal end;
a hub having an access hub in fluid communication with the lumen; and
an overmold, the overmold overlapping and contacting at least a portion of the catheter body and at least a portion of the hub, where the overmold maintains the spatial orientation of the catheter body to the hub by coupling the catheter body and the hub.
28. The catheter of claim 27 , where the overmold results from insert molding.