What's the difference between instrument and retractor?
Instrument
Definition:
(n.) That by means of which any work is performed, or result is effected; a tool; a utensil; an implement; as, the instruments of a mechanic; astronomical instruments.
(n.) A contrivance or implement, by which musical sounds are produced; as, a musical instrument.
(n.) A writing, as the means of giving formal expression to some act; a writing expressive of some act, contract, process, as a deed, contract, writ, etc.
(n.) One who, or that which, is made a means, or is caused to serve a purpose; a medium, means, or agent.
(v. t.) To perform upon an instrument; to prepare for an instrument; as, a sonata instrumented for orchestra.
Example Sentences:
(1) For assessment of clinical status, investigators must rely on the use of standardized instruments for patient self-reporting of fatigue, mood disturbance, functional status, sleep disorder, global well-being, and pain.
(2) Breast temperatures have been measured by the automated instrumentation called the 'Chronobra' for 16 progesterone cycles in women at normal risk for breast cancer and for 15 cycles in women at high risk for breast cancer.
(3) After a review of the technical development and application of staplers from their introduction to the present day, the indications to the use of this instrument in all gastroenterological areas from the oesophagus to the rectum as well as in chest, gynaecological and urological surgery specified.
(4) Short-forms of Wechsler intelligence tests have abounded in the literature and have been recommended for use as screening instruments in clinical and research settings.
(5) Atrioventricular (AV) delay that results in maximum ventricular filling and physiological mechanisms that govern dependence of filling on timing of atrial systole were studied by combining computer experiments with experiments in the anesthetized dog instrumented to measure phasic mitral flow.
(6) The instrument is a definite aid to the surgeon, and does not penalize the time required for surgery.
(7) Furthermore, the AMDP-3 scale and its manual constitute a remarkable teaching instrument for psychopathology, not always enough appreciated.
(8) But it [Help to Buy] is the right policy instrument to deal with a specific problem."
(9) Clinical use of this instrument is no more difficult than conventional immersion ultrasonography.
(10) The performance of the instrument was evaluated by undertaking in vitro measurements of the reflectance spectra of blood.
(11) Several recommendations, based upon the results of this survey study, the existing literature relevant to the ethical responsibilities of investigators who conduct research with children, and our own experiences with these instruments and populations, are made to assist researchers in their attempts to use these inventories in an ethical manner.
(12) Utilizing standardized instruments, family and demographic predictors of general and problem-solving knowledge pertaining to diabetes were identified in 53 newly diagnosed children.
(13) A compact attachment for microscope-type instruments is described enabling to introduce, rapidly and qualitatively, minute biological speciments into melted embedding medium and ensuring the safety of optics.
(14) This paper considers the advantages and disadvantages of the instrument together with indications for its use and reviews 118 patients who had 130 oral lesions removed with the CO2 laser.
(15) The inflammatory response is active in the embryo midway through incubation and is probably instrumental in protection of the embryo.
(16) To examine the possibility of prolongation of the standing times of instrument disinfectants, in vitro tests under high albumin exposure and tests in clinical practice were done.
(17) This, too, is a functional technique although the method and instruments are totally different.
(18) One abutment was used to evaluate each of nine oral hygiene instrumentation methods used for specified lengths of time or instrument strokes.
(19) Out-patient treatment, instrumentation and postgraduated teaching is dealt with.
(20) There is considerable evidence to suggest that intra-alveolar plasminogen activation is instrumental in many aspects of inflammatory lung injury and subsequent tissue repair.
Retractor
Definition:
(n.) A bandage to protect the soft parts from injury by the saw during amputation.
(n.) One who, or that which, retracts.
(n.) In breech-loading firearms, a device for withdrawing a cartridge shell from the barrel.
(n.) An instrument for holding apart the edges of a wound during amputation.
(n.) A muscle serving to draw in any organ or part. See Illust. under Phylactolaemata.
Example Sentences:
(1) Tension and intracellular free calcium concentration [( Ca2+]i) were measured simultaneously in single smooth muscle cells isolated from the anterior byssus retractor muscle (ABRM) of Mytilus edulis that were loaded with the fluorescent Ca2+ indicator fura-2.
(2) We present a computer-aided videodensitometric method for the determination of oxygen saturation in red blood cells flowing through capillaries of the hamster cheek pouch retractor muscle.
(3) New structures reported are mesoboscis retractor muscles, the formation of 3 ligament strands from the proboscis retractor muscles, a teloboscis inflator muscle, and conduit through the protrusor muscle sheath.
(4) We developed a new micro-iris retractor to achieve temporary intraoperative pupillary mydriasis in selected eyes undergoing pars plana vitreous surgery.
(5) These experiments demonstrated that accessory abducens is a primary controller of eye retraction through its axons to retractor bulbi.
(6) Inhibitory factor (IF), an extract of the bovine retractor penis muscle, when treated with acid, becomes a vasodilator with properties similar to endothelium-derived relaxing factor (EDRF).
(7) In our opinion, brachial plexus lesions following median sternotomy in cardiac surgery depend on the extent of sternal spread and the height of placement of the retractor in dependence of the rigidity of the rib cage.
(8) Weintraub and Aronson's (1962) formal measures of defensive language were used: nonpersonal references, negators, qualifiers, retractors, explaining expressions of feeling, and evaluators.
(9) Intracellular and extracellular electrodes were used to study spontaneous and impulse-linked release of transmitter at locust retractor unguis nerve-muscle synapses.2.
(10) 5: 423-429, 1973), appears to restrict blood flow by placing unnatural tension on the retractor muscle and by requiring an incision in the tip of the pouch.
(11) During each scratch cycle, the monoarticular knee extensor muscle is active when the limb rubs against the stimulated site, and there is rhythmic alternation between hip protractor and hip retractor muscle activity (Robertson et al., 1985).
(12) The pharyngeal retractor muscle of Helix lucorum is innervated by two symmetrical nerves which contain axons of two types forming myoneural junctions with the muscle cells.
(13) Interneurons are demonstrated in which membrane potential oscillations mirror the leg position or show correlation with the motoneuronal activity of the protractor and retractor coxae muscles during walking.
(14) The basis for this migration is postulated to be the anatomical relationships of the tarsus, postorbicular fascia, and lower eyelid retractors.
(15) Characteristics of the surgical techniques include 1) taking a transsylvian route; 2) retracting the M1 portion of the middle cerebral artery (occasionally the C1 portion of the internal carotid) medially with tapered brain retractors; and 3) approaching the aneurysm through and between perforators arising from the posterior cerebral artery in cases of high-placed basilar bifurcation.
(16) By quantitative sodium dodecyl sulfate-polyacrylamide gel electrophoresis, paramyosin:myosin heavy chain molecular ratios were calculated for three molluscan muscles:Aequipecten striated adductor, Mercenaria opaque adductor, and Mytilus anterior byssus retractor; and four arthropodan muscles:Limulus telson, Homarus slow claw.
(17) The stress that generated a remaining strain of 1 mm was about 80% of the maximum stress of the fixed flexible arm, and was a suitable indicator of the ability of a retractor under load.
(18) Medial entropion in this setting often coexists with lower eyelid retraction, and if a "spacer" of sclera or ear cartilage is to be inserted into the lower eyelid, it should be carried into the medialmost portion of the eyelid to recess the posterior lamellae, including the medial retractors, and allow the eyelid margin to return to its normal anatomic position.
(19) Effects of 5-hydroxytryptamine (5-HT) and forskolin on intracellular free calcium concentration [( Ca2+]i) were studied in suspensions of fura-2 loaded smooth-muscle cells from the anterior byssus retractor 'catch' muscle of Mytilus edulis.
(20) The relaxing effect of SKF 38393 on the catch contraction in the anterior byssus retractor muscle (ABRM) of Mytilus and the effect of SKF 38393 on the cyclic AMP (cAMP) levels in the ABRM were investigated.