What's the difference between trepan and trepanner?
Trepan
Definition:
(n.) A crown-saw or cylindrical saw for perforating the skull, turned, when used, like a bit or gimlet. See Trephine.
(n.) A kind of broad chisel for sinking shafts.
(v. t. & i.) To perforate (the skull) with a trepan, so as to remove a portion of the bone, and thus relieve the brain from pressure or irritation; to perform an operation with the trepan.
(n.) A snare; a trapan.
(n.) a deceiver; a cheat.
(v. t.) To insnare; to trap; to trapan.
Example Sentences:
(1) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
(2) Labyrinthine trepanation was performed in the majority of 16 patients with minor agenesis of middle ear involving either stapedovestibular ankylosis or absence of fenestra vestibuli.
(3) The introduction of a new motorized trepan in ophthalmic surgery by Arthur v. Hippel in 1891 was a very important achievement.
(4) Already Hippocrates recommended decompression-trepanation for the treatment of hydrocephalus.
(5) Borings with rose trepans without cooling fluid cause sometimes considerable heat lesions up to a depth of 30 mu.
(6) The method of choice for the treatment was the osteoplastic trepanation with a removal of the haematoma.
(7) A second similar observation was made in a 15 year old male, trepanated because of an epidural abscess.
(8) Surgical techniques were those of Mackensen (1972), the trap-door technique, and a trepanation of the sclerocornea with regrafting.
(9) Resection trepanation of the skull was carried out in 55 patients, osteoplastic in 23.
(10) It can be demonstrated that because of the stress on the femur and its mechanical characteristics (material distribution, density distribution, breaking strength, "structure" strength and the histological structure), a lateral trepanation of the femoral corticalis is weakening the bone in its mechanically most stressed part whereas an anterior fenestration is mechanically much better.
(11) Before trepanation they received infiltration anaesthesia of the scalp at the site of the proposed operation.
(12) The surgical removing of the apical part of the implant with the use of a Trepan bur made it possible to examine and visualize histologically and microradiographically the tissue adjacent to the implant.
(13) Due to these observations, Perier had suggested to treat deafness by trepanation.
(14) Investigations of the French physician Perier on patients after a trepanation of their skulls have shown that talking can be understood in the case of hermetically closed ears by means of the trepanation scar.
(15) Since skin problems as decubitus and infections are well known risks in osteoplastic trepanations in congenital malformations in children, we searched for a reduction in size of the implants and the possibility to use biodegradable materials.
(16) This case shows that the value of angiography for the diagnosis of brain death may sometimes be limited, at least in those cases in which osteoclastic trepanation has been performed or there are other causes for a skull defect, because they can prevent the rise of intracranial pressure which brings about the cerebral circulatory arrest.
(17) After osteoclastic trepanation 45 patients were investigated with ultrasonic tomography.
(18) This is effected by the ability to change the penetration angle of the electrode or by choosing a different point of trepanation.
(19) During trepanation a macroscopically typical finding of Sturge-Weber-syndrome could be demonstrated (angioma capillare et venosum) covering almost the entire right posterior hemisphere.
(20) Since the bone meal is usually obtained during trepanation, bone biopsies of other body regions are unnecessary.