Trial Search Results

Ruptured Aneurysms Treated With Hydrogel Coils

To determine safety and occlusion rates when second-generation hydrogel coils are used in the treatment of ruptured intracranial aneurysms.

Stanford is currently accepting patients for this trial.

Lead Sponsor:

Microvention-Terumo, Inc.

Collaborator: Semmes-Murphey Foundation

Stanford Investigator(s):


  • Device: Second-generation hydrogel coils


Inclusion Criteria:

   1. Patient is ≥ 18 and ≤ 80 years of age.

   2. Patient has a previously untreated, ruptured saccular intracranial aneurysm 2 - 15 mm
   in diameter for which the clinical decision to treat with hydrogel coil embolization
   has been made independent of the decision to participate in the study described in
   this protocol.

   3. Patient has a baseline Hunt and Hess Score of I, II, or III.

   4. Patient or patient's legally authorized representative has provided written informed

   5. Patient must be considered by the treating physician to be available for and able to
   complete all followup visits.

   6. Patient has not been previously entered into this study.

Exclusion Criteria:

   1. Inability to obtain written informed consent.

   2. Patient is < 18 or > 80 years of age.

   3. Patient has a baseline Hunt and Hess score of IV or V.

   4. Target aneurysm is dissecting, fusiform, mycotic, blister-like, tumoral, or

   5. Target aneurysm maximum diameter is > 15 mm or < 2 mm.

   6. Target aneurysm was previously treated via clipping or coiling.

   7. Target aneurysm is deemed by the treating physician to be unsuitable for coiling or
   unlikely to be successfully treated by endovascular techniques.

   8. Target aneurysm has not been confidently determined by the treating physician to be
   the source of SAH.

   9. Planned use of a flow diverter or intrasaccular device as a component of the target
   aneurysm treatment plan.

10. Intended use of a coil-assist stent as a component of the target aneurysm treatment
   plan, unless use of a stent is 1) planned as a subsequent stage of a staged coiling
   procedure or 2) used for bailout purposes.

11. Patient has a known, untreatable hypersensitivity to contrast dye, iodine, hydrogel,
   or any other component of the treatment device.

12. Patient has a contraindication to heparin or aspirin.

13. Patient has vascular anatomy/tortuosity preventing access to the target aneurysm.

14. Patient is unable to undergo DSA or DSA is determined unsuitable or outside standard
   of care by the treating physician.

15. Patient has a serious or life-threatening comorbidity that could confound study

16. Patient is at high risk of noncompliance due to a history of substance abuse,
   psychosocial issues, etc.

17. Patient is unable to complete scheduled followup assessments due to comorbidities,
   geographical limitations, or a life expectancy of less than 18 months.

18. Patient is pregnant, breastfeeding, or plans to become pregnant prior to completion of

19. Patient is enrolled in another device or drug study in which participation could
   confound study results.

Ages Eligible for Study

18 Years - 80 Years

Genders Eligible for Study


Now accepting new patients

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305