Crossword clues for aspirator
The Collaborative International Dictionary
Aspirator \As"pi*ra`tor\, n.
(Chem.) An apparatus for passing air or gases through or over certain liquids or solids, or for exhausting a closed vessel, by means of suction.
(Med.) An instrument for the evacuation of the fluid contents of tumors or collections of blood.
Wiktionary
n. 1 A pump which draws gas through a liquid. 2 A pump for removing gases or liquids.
WordNet
n. a pump that draws air or another gas through a liquid
Wikipedia
An aspirator is a type of ejector-jet pump, that produces vacuum by means of the Venturi effect.
In an aspirator, fluid (liquid or gaseous) flows through a tube which narrows then expands in cross-sectional area, and thus volume. When the tube narrows the fluid's pressure decreases. In this narrow area the fluid velocity must increase to conserve mass continuity. Where the tube narrows a vacuum is drawn because of the Venturi effect.
In entomology, an aspirator, also known as a pooter is a device used in the collection of insects, crustaceans or other small, fragile organisms, usually for scientific purposes.
Such devices are most commonly used by entomologists for field and lab work. One of the most common designs consists of a small resealable jar or vial, the lid or stopper of which is penetrated by two tubes. On the inner end of one tube, fine mesh or another type of filter is attached, and this tube leads to the user's mouth (usually connected by a long, flexible piece of tubing). The end of the second tube projects into the collecting chamber, and its far end can then be placed over an insect or other small organism; the user sucks on the first tube, and the insect is drawn into the collecting chamber through the other.
The other common design (the more traditional "pooter") consists of a length of flexible tubing, of which one end is held in the mouth, and the other end which holds the tip. The tip is usually a glass or plastic pipette inserted into the plastic tubing, with a piece of gauze as a filter at the inner end to prevent accidental ingestion. Small insects (e.g., Drosophila) may be gently collected and held against the filter by steady inhalation, and transferred into a container by then blowing the insect(s) out. A skilled lab worker, for instance, may be able to sequentially inhale and then transfer a pooter-full of Drosophila flies singly into vials, thus facilitating rapid setup of fly experiments with a minimum of pain caused to the researcher, or the researched. Larger, motor-powered variants of this design exist (typically, a leaf blower working in reverse), where the insects are sucked into a mesh collecting bag in a long plastic tube, and held there by the powerful suction.
In entomological surveys pooters are usually used in combination with insect nets or beating nets but may also be used alone to collect insects seen on vegetation or tree trunks.
Pooters should never be used to collect from faeces or carcasses. Blow-type ( Bernoulli or Venturi effect) pooters also called "blowing aspirator" have been developed for medical, forensic or agricultural work.
A medical aspirator is a small suction machine used to remove mucus and other bodily fluids from a patient. These machines are often designed to be portable for use in ambulances and nursing homes, and can run on AC/DC or battery power.
In the past manually operated aspirators were used such as Potain's aspirator.
Aspirator may refer to:
- Aspirator (medical device), a suction device used to remove bodily fluids from a patient
- Aspirator (pump), a device producing vacuum by the Venturi effect in a constricted stream of fluid
- Aspirator (entomology), also known as pooter, a suction device used to collect insects
Usage examples of "aspirator".
Eddie realized with real panic that he had packed the whole damned drugstore and had left the most important thing of all - his aspirator - downstairs on top of the stereo cabinet.
And now I've got a fever, Marty, only it's a fever you can't damp down with aspirin, and I've got a shortness of breath the goddamned aspirator won't touch, because that shortness of breath isn't in my throat or my lungs - it is around my heart.
He groped for the aspirator, found it, pointed it down his throat, and pulled the trigger.
Henry Bowers - who looked a little bit like someone had run him through a Disposall - had mashed Eddie's nose and then Eddie's asthma had come on strong and few aspirator turned up empty.
He saw Bill toss the aspirator into his bike-basket and mount clumsily.
HydrOx Mist (Administer as needed typed neatly on the gummed label he pasted on each aspirator bottle) was wonderfully cheap, but even Mrs Kaspbrak was willing to admit that it controlled her son's asthma quite well in spite of that fact.
He had taken another gulp from his aspirator and was breathing normally again.
Eddie had to use his aspirator once, and then his chest lightened and his throat seemed to widen magically to the size of a freeway.
Down here in the Barrens that didn't get him in much trouble, but the Barrens weren't Never-Never Land and they couldn't be the Wild Boys for more than a few hours at a stretch (the idea of a Wild Boy with an aspirator in his back pocket made Eddie smile).
Eddie reached automatically for his aspirator, pulled it out of his back pocket, and held it in his hand.
She kept telling him how delicious they were and what a treat he was missing until he started to gasp for breath and had to use his aspirator.
Halfway through the telling he began to gasp and had to use his aspirator.
He took his aspirator out of his pocket and sucked in on it with a monstrous gasp.
Eddie took another wheezing pull on his aspirator and then told the story of the leper again, speaking as rapidly as Ben had slowly, his words tumbling over one another in their urgency to escape and be gone.
He leaned over, put one thin arm around Stan's slumping shoulders, jammed his aspirator into Stan's mouth, and triggered off a big blast.