Catheter geometry with improved resistance to occlusion

Ventriculo-peritoneal (VP) shunt surgery is the predominant mode of therapy for patients with hydrocephalus. However, it has potential complications that may require multiple surgical procedures during a patient's lifetime. Historically, VP shunts can have a failure rate as high as 40% by 2 years post-implant, with the most common reason being proximal catheter obstruction by in-growth of tissue. The catheter can become occluded by cellular debris in the cerebrospinal fluid, bio-film formation, or tissue proliferation in the catheter. There is a need for a low-cost, safe and consistent system that provides improved resistance to proximal catheter occlusion, thereby reducing the rate of surgical VP shunt revisions. A catheter with unique tip geometry that provides improved resistance to occlusion will fit into the existing clinical pathway and procedure, will require no extensive training, and will reduce shunt revisions.

Duke File (IDF) Number



  • Lad, Shivanand (Nandan)
  • Paganelli, Jude

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School of Medicine (SOM)