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The working face of the suction cup is made of elastic, flexible material and has a curved surface. [3] When the center of the suction cup is pressed against a flat, non-porous surface, the volume of the space between the suction cup and the flat surface is reduced, which causes the air or water between the cup and the surface to be expelled past the rim of the circular cup.
A suction cup is placed onto the head of the baby and the suction draws the skin from the scalp into the cup. Correct placement of the cup directly over the flexion point, about 3 cm anterior from the occipital (posterior) fontanelle, is critical to the success of a vacuum extraction. [2] Ventouse devices have handles to allow for traction.
The self-sealing suction cup is a suction cup that exerts a suction force only when it is in physical contact with an object. Unlike most other suction cups, it does not exert any suction force when it is not in contact with an object. [1] Its grasping ability is achieved entirely through passive means without the use of sensors, valves, or ...
The third categorization relates to "the method of suction-related types" including fire, manual suction, and electrical suction cupping therapy. The fourth categorization relates to "materials inside cups" including herbal products, water, ozone, moxa, needle, and magnetic cupping therapy. [30] Further categories of cupping were developed later.
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as a haemostat; replace tonsil artery forceps; ligature will not slip due to curve tip. St. Clair Thompson adenoid curette with cage and guard: used in adenoid surgery.held in dagger holding fashion and passed behind soft palate. Yankauer's nasopharyngoscope: for a direct access or look at the nasopharynx: Yankauer suction tip
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One method of weightlifting was lifting a heavy sack of sand with one hand and keep it high in a vertical position. The player had to hold that sack of sand for some time and stay in the same position. This rule is still applied in the modern weightlifting. [223] [219] High jump [219] Tug of War — This sport was practiced in the country side ...