Retrospective Analysis Study Shows CentrosFLO® Long-Term Hemodialysis Catheter Tip Design Offers Greater Patency


The Merit Medical CentrosFLO long-term hemodialysis catheter’s self-centering split-tip design has a greater separation between the arterial and venous tips than the symmetric-tip designed catheter. Its design is intended to optimize catheter patency and reduce fibrin sheath formation, thrombosis and vessel wall occlusions by keeping the tips of the catheter centered in the vessel and away from the vessel wall.

In May of 2013, a retrospective study was completed by Dr. Saravanan Balamuthusamy (“Dr. Bala”) at Angiocare, Vascular and Interventional Nephrology, in Tucson, Arizona. The performance and safety of a new self-centering, split tip hemodialysis tunneled catheter was compared with a symmetric-tip catheter in 58 patients.

Study Conclusion1
The study results indicated that the CentrosFLO self-centering, split-tip catheter had statistically greater patency after 3 months with similar clearance and blood flow.

Split-Tip Design
(n = 38)
(n = 20)
Patency94.7%75.0%P = 0.04
Mean Clearance (Kt/V)21.4831.423NSD4 (p = 0.48)
Mean Blood Flow (ml/min)2393.93381.63NSD4 (p = 0.27)

1 Study data on file.
2 Mean value during the three-month follow-up period.
3 Mean clearance and mean blood flow did not include data from patients with no catheter patency.
4 NSD = Not Statistically Significant, p > 0.05 (t-tests).

For a full published version of this study, contact your local Merit Sales Representative.

Nate Smith – Senior Product Manager
Merit Medical Systems, Inc.