Ultrasound endoscope system and ultrasound observation method

An ultrasound endoscope system, comprising:

• a first ultrasound observation unit which has a predetermined observation region;
• a first ultrasound image generating unit which can display a first ultrasound image on the basis of an observation result which is observed in the first ultrasound observation unit;
• a guide member with a needle-like distal end insertable and extractable to the observation region of the first ultrasound observation unit;
• a second ultrasound observation unit which has an external diameter insert-through-capable to the guide member;
• and
• a second ultrasound image generating unit which can display a second ultrasound image on the basis of an observation result which is observed by the second ultrasound observation unit.

An ultrasound endoscope system, comprising:

• a first ultrasound observation unit which has a predetermined observation region;
• a protruding portion which is provided with predetermined positional relation to the first ultrasound observation unit and which protrudes by a predetermined amount;
• a puncture needle insertable and extractable to the predetermined observation region of the first ultrasound observation unit;
• an ultrasound probe which is insertable and extractable to the first ultrasound observation unit and the predetermined observation region, and which has an ultrasound observation surface in which the protruding portion can scan;
• and
• an ultrasound image generating unit which can display a first ultrasound image on the basis of an observation result of the first ultrasound observation unit, and a second ultrasound image on the basis of an observation result of the ultrasound probe.

An ultrasound endoscope system, comprising:

• a first ultrasound observation unit which is provided in a distal end surface of an insertion portion of an ultrasound endoscope and which has a predetermined observation region;
• a first treatment instrument channel through which a puncture needle is inserted, the first treatment instrument channel having a first opening in the distal end surface of the insertion portion;
• a second treatment instrument channel having a second opening in the distal end surface of the insertion portion;
• an ultrasound probe which is inserted through the second treatment instrument channel and which protrudes from the second opening;
• a protruding portion which protrudes from the distal end surface of the insertion portion to a scan area of the ultrasound probe;
• and
• an ultrasound image generating unit which can display a first ultrasound image on the basis of an observation result of the first ultrasound observation unit, and a second ultrasound image on the basis of an observation result of the ultrasound probe.