Devices for in situ formed nerve caps and/or nerve wraps

A form for creating an in situ wrap around a nerve to nerve junction, the form comprising:

• a concave wall at least partially defining a cavity and a top opening for accessing the cavity, the top opening having a first cross-sectional area being less than a second cross-sectional area of the cavity;
• a first nerve guide comprising a first surface at least partially defining a first side access through the concave wall for positioning a first nerve end in the cavity, the first surface being on a first end of the form at a first elevated position relative to a bottom interior surface of the concave wall such that the first nerve end is spaced away from the bottom interior surface of the concave wall when the first nerve end is positioned on the first surface and at least partially within the cavity;
• a second nerve guide comprises a second surface at least partially defining a second side access through the concave wall for positioning a second nerve end in the cavity, the second surface being on a second end of the form at a second elevated position relative to the bottom interior surface of the concave wall such that the second nerve end is spaced away from the bottom interior surface of the concave wall when the second nerve end is positioned on the second surface and at least partially within the cavity;
• and
• at least one stabilizing feature being configured to stabilize the form, the at least one stabilizing feature comprising a transverse support surface extending along or parallel to a tangent to the concave wall.