An improved thin invert composition and method for applying agricultural products to a target area with minimal drift or evaporation is disclosed, based on a water and oil mixture which is emulsified by minimal agitation so as to provide a low viscosity emulsion. The ultrasound system comprises an ultrasound diagnosis unit configured to transmit ultrasound signals to a target object, receive ultrasound echo signals reflected from the target object and form an ultrasound image including a plurality of pixels based on the ultrasound echo signals, each pixel having an intensity of gray level. The occluding member is implanted within a body lumen, secured to the wall of the reproductive lumen and then collapsed to collapse the wall and occlude the lumen. Other embodiments are described and claimed. The receptacle portion can have a hold actuator as an appendage from the top portion thereof where the hold actuator can be substantially tab-like and can be split. By providing the retractor on the pivot holder, the retract force will always be close to that specified according to the design of the drive.