Evaluating the Polaris® 24 Valve System for Hydrocephalus Treatment

Safety and Performance of the Polaris® 24 Adjustable Valve System in Hydrocephalus Patients' Treatment

Observational Sophysa · NCT04746625

This study is testing a new adjustable valve system for treating hydrocephalus to see how safe and effective it is for patients who have received it.

Quick facts

Study typeObservational
Enrollment126 (estimated)
SexAll
SponsorSophysa Industry-sponsored
Locations2 sites (Marseille and 1 other locations)
Trial IDNCT04746625 on ClinicalTrials.gov

What this trial studies

The SAPPHYRE study is an ambispective clinical follow-up that aims to assess the safety and performance of the Polaris® 24 adjustable valve system in treating hydrocephalus. This multicenter study will involve 126 patients who have been implanted with the valve, either as a first-time procedure or as a replacement for another system. Patients will be monitored for up to five years post-implantation to gather data on outcomes and any adverse events.

Who should consider this trial

Good fit: Ideal candidates are patients who have received the Polaris® 24 adjustable valve system for hydrocephalus management.

Not a fit: Patients with confirmed infections along the shunt or those on anticoagulant therapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve treatment options and outcomes for patients with hydrocephalus.

How similar studies have performed: While this approach is based on existing valve systems, the specific evaluation of the Polaris® 24 is novel and not extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient implanted with the Polaris® 24 adjustable valve system for the following reasons:

  * Primo implant of a valve shunt-based derivation system, or as a
  * Replacement of another valve -based shunt system, or
  * Endoscopic ventriculostomy (EVT) failure
* Patient having given his/her informed consent prior to inclusion in this study, as per local regulations

Exclusion Criteria:

* Confirmed or suspected infections along the length of the shunt (meningitis, ventriculitis, peritonitis, septicemia or bacteremia) or any infection present in any part of the body
* Patient on anticoagulant therapy, or presenting with bleeding diathesis, or with haemorrhagic CSF, as the presence of blood in the system could lead to an obstruction in the system
* Ventriculo-atrial shunts in patient suffering from congenital cardiopathies or other malformations of the cardio-pulmonary system

Where this trial is running

Marseille and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions HydrocephalusAdjustable valvePolaris 24Cerebrospinal fluid
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.