This is a prospective study to evaluate the performance and safety of a new medical device used in case of cerebrospinal fluid (CSF) leakage after an elective cranial surgery.

Patients who consented to participate in the trial and fulfilled the preoperative inclusion and exclusion criteria underwent screening prior to surgical treatment. After dural suturing, if patients met the intra operative inclusion and exclusion criteria, they received I-020805. If necessary, autologous grafts were to be used to augment dural closure.

I-020805 was delivered from a double syringe applicator that creates a fine layer over the dura. This layer quickly sets within seconds to form a watertight seal.

Inclusion Criteria:

Pre-operative

• Male or female of 18 years old or over
• Elective cranial procedure entailing a dural incision of at least 2 cm in length
• Requires a procedure involving surgical wound classification Class I/Clean
• Signed informed consent form
• Negative pregnancy test at screening for women of childbearing potential and agreeing to use an acceptable birth control method or abstinence until 90 days post-surgery

Intra-operative

• Surgical wound classification Class I/Clean
• Dural margin from bony edges of at least 3 mm throughout
• Spontaneous expression of CSF assessed visually or a CSF leakage upon Valsalva maneuver

Exclusion Criteria:

Pre-operative

• Cranial procedure requiring translabyrinthine, transoral and/or any procedure penetrating the air sinus or mastoid air cells
• Presence of symptomatic hydrocephalus
• Pre-existing external ventricular drainage or lumbar CSF drain
• Radiotherapy in the planned surgical region which ended within 3 months prior to planned surgery
• Presence of systemic infection
• Known history of hemophilia or other clinically significant coagulopathy
• Known oral anticoagulant use
• Pregnancy or breast feeding
• Known allergy to any components of I-020805
• Previous participation in this trial or any investigational drug or device study within 30 day of screening
• Known clinically significant organ or systemic diseases
• Known or suspected non-compliance with trial procedures

Intra-operative

• Patient not meeting the pre-operative eligibility criteria
• Not able to tolerate a Valsalva maneuver
• Gap of more than 2 mm remaining after primary closure of dura
• Use of synthetic or non-autologous duraplasty material