Simple Suction Research Articles

A simple suction device.

A simple suction device is described, suitable for portable resuscitation kits. It can be made cheaply, from parts already available in most hospitals and is reliable and effective.

"How I do it"--otology and neurology. A specific issue and its solution. A simple suction tip for surgery of the ear.

"How I do it"--otology and neurology. A specific issue and its solution. A simple suction tip for surgery of the ear.

Hematological response of rabbits to chronic, repetitive, severe bleedings for the production of antisera

A study was undertaken to determine whether large amounts of blood (antiserum) could be rapidly removed from rabbits over a two-month period using a simple suction technique. It was found that half a blood volume could be rapidly removed each week (over 900 ml/rabbit/54 days)_without a single fatability. The rabbits efficiently replaced the essential components of their blood during the experimental period as shown by a study of their blood parameters. They moderately overcompensated in replacing some of their blood components after a 6-week rest period. The study demonstrates that rabbits are satisfactory (in lieu of larger animals) for supplying relatively large amounts of antisera.

GROWTH HORMONE LEVELS DURING THE FIRST HOURS OF SLEEP IN CHILDREN

Employing a simple suction pump and catheter coated with heparine, blood could be sampled continuously and evenly. Children were investigated for 3–4 hours after going to bed. Half-hour samples of 81 children were analyzed in order to find a combination with the smallest number of false-negative results. The best results were obtained combining the first half-hour sample with either the 3rd half-hour sample after onset of sleep or the 2nd half-hour sample after stage III-IV sleep. Small children with socalled primordial growth retardation had lower levels than normal children. In overweight children levels were low. No relationship could be found between levels of FPA, cortisone, glucose and insuline on the one hand and growth hormone on the other. Observation of the child showed the onset of sleep and of stage III-IV sleep equally wells as EEC recording; therefore EEG is not necessary for routine use. This method of growth hormone determination is relatively simple, at least equally informative, cheaper as to laboratory work and registra-tes spontaneous instead of provoked growth hormone secretion.

GROWTH HORMONE LEVELS DURING THE FIRST HOURS OF SLEEP IN CHILDREN

Employing a simple suction pump and catheter coated with heparine, blood could be sampled continuously and evenly. Children were investigated for 3–4 hours after going to bed. Half-hour samples of 81 children were analyzed in order to find a combination with the smallest number of false-negative results. The best results were obtained combining the first half-hour sample with either the 3rd half-hour sample after onset of sleep or the 2nd half-hour sample after stage III-IV sleep. Small children with socalled primordial growth retardation had lower levels than normal children. In overweight children levels were low. No relationship could be found between levels of FPA, cortisone, glucose and insuline on the one hand and growth hormone on the other. Observation of the child showed the onset of sleep and of stage III-IV sleep equally wells as EEC recording; therefore EEG is not necessary for routine use. This method of growth hormone determination is relatively simple, at least equally informative, cheaper as to laboratory work and registra-tes spontaneous instead of provoked growth hormone secretion.

A Simple Suction Device for ???Crash??? Inductions

A Simple Suction Device for ???Crash??? Inductions

Role of -aminobutyric acid (GABA) in the extrapyramidal motor system. 2. Some evidence for the existence of a type of GABA-rich strio-nigral neurons.

Interference with the neuronal connection between the substantia nigra and striatum of rat by hemitransection at the subthalamic level or lesion of left side of striatum by a simple suction method was studied in relation to the concentration of γ-aminobutyric acid (GABA) in both regions. Time interval studies, at two, six, and twelve days after hemitransection, showed that the GABA concentration in substantia nigra had markedly decreased, whereas only a slight change was shown on the striatum of the operated side. Destruction of the striatum by suction caused a significant fall of the GABA content in the ipsilateral side of substantia nigra. However, destruction of the frontal cortex alone did not cause any marked change in the GABA content of the substantia nigra. In addition, electron microscopic studies disclosed that within the synaptic organization of the substantia nigra approximately 20 % of the boutons contained elongated synaptic vesicles, and that, following coagulation of the striatum, some large axosomatic terminals containing elongated synaptic vesicles also underwent degeneration.

A method for measuring human skin elasticity in vivo with observations of the effects of age, sex and pregnancy.

1. A method is presented for the measurement of the elasticity of human skin in vivo. A simple suction cup device is applied to the intact skin and the distortion produced in response to pre-determined negative pressures recorded. By the use of appropriate formulae stress and strain may be calculated and a stress/strain curve drawn, the gradient of which represents the elastic modulus for intact skin. 2. The test, which is simple to perform and entirely innocuous to the patient, has been shown to achieve acceptable standards of accuracy and reproducibility. 3. In the present study, the physiological variation in skin elasticity that occurs in respect of age, sex and pregnancy is investigated and the implications concerning the physiological changes that occur in skin collagen discussed.

Suction Apparatus for Mounting Clay Specimens on Ceramic Tile for X‐Ray Diffraction

AbstractA simple suction apparatus for preparing clay mineral specimens for X‐ray diffraction on unglazed ceramic tile is described. A large rubber stopper is modified by forming a molded recess with silicon rubber to reduce air leakage about the tile. Specimens of proper thickness can be prepared quickly with the apparatus.

1156. Simple suction device for obtaining an ultrahigh vacuum

1156. Simple suction device for obtaining an ultrahigh vacuum

A SIMPLE SUCTION-BLOW OUT DEVICE FOR CONSTRICTION PIPETTES.

A SIMPLE SUCTION-BLOW OUT DEVICE FOR CONSTRICTION PIPETTES.

Device for the accurate reproduction of liquid levels and some applications

It has been found that a simple suction device can be used to reproduce liquid levels to a very high degree of accuracy. The application of this discovery to level control, collection of liquids under constant head and to the measurement of the volume of large objects is discussed.

A Simple Suction Unit for use in Thoracic Surgery

A Simple Suction Unit for use in Thoracic Surgery

Device for improving nasogastric suction.

While continuous nasogastric suction is perhaps less frequently employed than formerly, there are occasions when its effectiveness is of critical importance. One cause of its occasional failure appears to be due to the tendency of gastric mucosa to obstruct the openings in the gastric end of the tube. This has been noted with the use of the standard-type water displacement suction and with the intermittent mechanical suction, when the latter apparatus is acting through the usual 1 gal. trap bottle. The negative pressure in the trap bottle maintains, in effect, constant suction. Increasing abdominal distention has been observed in spite of the best efforts to maintain gastric aspiration. The use of reduced suction (1 cm. Hg) by shunting a simple suction breaker in the suction line has been helpful. This requires the use of one of the mechanical types of suction pumps. Soft rubber fins glued to the tube to

AN ADAPTATION OF THE CAPILLARY pH ELECTRODE FOR PRACTICAL USE

CAPILLARY electrodes for pH meters have been applied to the accurate determination of pH when only limited samples were available. This type of electrode has proved particularly valuable for the study of plasma or blood from infants or small animals. However, the problem of frequent plugging and breakage encountered while filling and rinsing the capillary by gravity and/or capillary action has made the micro pH electrode difficult, if not impractical, to use for routine work. Other authors have described a suction system applicable only to the cleansing of a different type of capillary electrode. The accompanying diagram shows how a simple suction system may be attached to the Beckman capillary to allow easy, controlled filling with buffer solutions, plasma or blood, and to permit thorough rinsing.

Porosity of, and bacterial invasion through, the shell of the hen's egg

1. Histological methods show four layers in the intact shell of the hen's egg, namely, cuticle, spongy layer, mammillary layer, and inner shell membrane. Distinct channels or pores may be found in the spongy layer, but these tend to disappear in the mammillary layer in which only a network of much finer channels can be observed.2. Viscometric measurements of the passage of water and air through the shell show that(a) shells vary widely in their porosity, even when taken on successive days from the same hen;(b) there is no correlation between porosity so determined and the number of pores counted by staining methods;(c) the rate of flow is slower from the interior to the exterior than vice versa, and the pore count by staining methods also less on the inside than on the outside.3. A rough correlation exists between porosity as determined viscometri-cally and the evaporation of water during storage.4. If the temperature of the egg is higher than a fluid containing bacteria in which it is immersed, the latter are readily drawn through the shell by simple suction as the egg cools down, a point of great significance in the washing of eggs.

A Simple Irrigation and Suction Apparatus

A Simple Irrigation and Suction Apparatus