diff --git a/invesalius/gui/task_navigator.py b/invesalius/gui/task_navigator.py
index 8cd0bb1..4985295 100644
--- a/invesalius/gui/task_navigator.py
+++ b/invesalius/gui/task_navigator.py
@@ -201,7 +201,12 @@ class InnerFoldPanel(wx.Panel):
 
         # Fold 2 - Object registration panel
         item = fold_panel.AddFoldPanel(_("Object registration"), collapsed=True)
-        otw = ObjectRegistrationPanel(item, tracker, pedal_connection)
+        otw = ObjectRegistrationPanel(
+            parent=item,
+            tracker=tracker,
+            pedal_connection=pedal_connection,
+            neuronavigation_api=neuronavigation_api,
+        )
 
         fold_panel.ApplyCaptionStyle(item, style)
         fold_panel.AddFoldPanelWindow(item, otw, spacing=0,
@@ -889,7 +894,7 @@ class NeuronavigationPanel(wx.Panel):
 
 
 class ObjectRegistrationPanel(wx.Panel):
-    def __init__(self, parent, tracker, pedal_connection):
+    def __init__(self, parent, tracker, pedal_connection, neuronavigation_api):
         wx.Panel.__init__(self, parent)
         try:
             default_colour = wx.SystemSettings.GetColour(wx.SYS_COLOUR_MENUBAR)
@@ -901,6 +906,7 @@ class ObjectRegistrationPanel(wx.Panel):
 
         self.tracker = tracker
         self.pedal_connection = pedal_connection
+        self.neuronavigation_api = neuronavigation_api
 
         self.nav_prop = None
         self.obj_fiducials = None
@@ -917,7 +923,7 @@ class ObjectRegistrationPanel(wx.Panel):
         btn_new = wx.Button(self, -1, _("New"), size=wx.Size(65, 23))
         btn_new.SetToolTip(tooltip)
         btn_new.Enable(1)
-        btn_new.Bind(wx.EVT_BUTTON, self.OnLinkCreate)
+        btn_new.Bind(wx.EVT_BUTTON, self.OnCreateNewCoil)
         self.btn_new = btn_new
 
         # Button for import config coil file
@@ -1060,13 +1066,16 @@ class ObjectRegistrationPanel(wx.Panel):
         coil_index = evt.GetSelection()
         Publisher.sendMessage('Change selected coil', self.coil_list[coil_index][1])
 
-    def OnLinkCreate(self, event=None):
+    def OnCreateNewCoil(self, event=None):
 
         if self.tracker.IsTrackerInitialized():
             dialog = dlg.ObjectCalibrationDialog(self.tracker, self.pedal_connection)
             try:
                 if dialog.ShowModal() == wx.ID_OK:
                     self.obj_fiducials, self.obj_orients, self.obj_ref_mode, self.obj_name, polydata, use_default_object = dialog.GetValue()
+
+                    self.neuronavigation_api.update_coil_mesh(polydata)
+
                     if np.isfinite(self.obj_fiducials).all() and np.isfinite(self.obj_orients).all():
                         self.checktrack.Enable(1)
                         Publisher.sendMessage('Update object registration',
diff --git a/invesalius/net/neuronavigation_api.py b/invesalius/net/neuronavigation_api.py
index 60b81da..dfc99de 100644
--- a/invesalius/net/neuronavigation_api.py
+++ b/invesalius/net/neuronavigation_api.py
@@ -20,6 +20,9 @@
 from invesalius.pubsub import pub as Publisher
 from invesalius.utils import Singleton
 
+import numpy as np
+from vtk.numpy_interface import dataset_adapter
+
 class NeuronavigationApi(metaclass=Singleton):
     """
     An API used internally in InVesalius to communicate with the
@@ -34,6 +37,8 @@ class NeuronavigationApi(metaclass=Singleton):
 
     If connection object is not given or it is None, skip doing the updates.
     """
+    N_VERTICES_IN_POLYGON = 3
+
     def __init__(self, connection=None):
         if connection is not None:
             assert self._hasmethod(connection, 'update_coil_pose')
@@ -65,3 +70,28 @@ class NeuronavigationApi(metaclass=Singleton):
                 position=position,
                 orientation=orientation,
             )
+
+    def update_coil_mesh(self, polydata):
+        wrapped = dataset_adapter.WrapDataObject(polydata)
+
+        points = np.asarray(wrapped.Points)
+        polygons_raw = np.asarray(wrapped.Polygons)
+
+        # The polygons are returned as 1d-array of the form
+        #
+        # [n_0, id_0(0), id_0(1), ..., id_0(n_0),
+        #  n_1, id_1(0), id_1(1), ..., id_1(n_1),
+        #  ...]
+        #
+        # where n_i is the number of vertices in polygon i, and id_i's are indices to the vertex list.
+        #
+        # Assert that all polygons have an equal number of vertices, reshape the array, and drop n_i's.
+        #
+        assert np.all(polygons_raw[0::self.N_VERTICES_IN_POLYGON + 1] == self.N_VERTICES_IN_POLYGON)
+
+        polygons = polygons_raw.reshape(-1, self.N_VERTICES_IN_POLYGON + 1)[:, 1:]
+
+        self.connection.update_coil_mesh(
+            points=points,
+            polygons=polygons,
+        )
--
libgit2 0.21.2