Steerable ultrasound attachment for endoscope

An endoscope add-on assembly adapted to be attached to a target endoscope, the endoscope add-on assembly including:

• an ultrasound imaging head;
• and
• an ultrasound imaging sub-assembly configured to selectively engage the ultrasound imaging head, wherein said ultrasound imaging sub-assembly comprises:
• a retaining element configured to secure the ultrasound imaging sub-assembly to the target endoscope;
• and
• an abutment configured to align the ultrasound imaging sub-assembly in a first predetermined position relative to the target endoscope when secured.

An endoscope add-on assembly adapted to be attached to a target endoscope, the endoscope add-on assembly including:

• an ultrasound imaging head defining a recess;
• and
• an ultrasound imaging sub-assembly comprising:
• an attachment arm having a geometry compatible to the recess, the attachment arm configured to selectively engage the ultrasound imaging head;
• and
• a retaining element configured to secure the ultrasound imaging sub-assembly to the target endoscope.