| 摘要 |
<p>Neurosurgical endoscopic ultrasonic contact probe is a variation of ultrasonic knife the manufacturing of which is based on producing longitudinal vibrations of elastic titanium wire. This specific surgical instrument is in fact a dissection device that may be used for the destruction and fragmentation of tissue by beamed vibrations. It may be classified into the group of new micro-surgical instruments that satisfy the criteria of minimal invasive surgery belonging to endoscopically aided procedures. The use of this type of surgical instrument is grounded on creation of strong mechanical vibrations produced by wedged in complex piezoelectrical transducer of minimal dimensions, and that are the result of careful selection of anterior metal titanium piece in the form of mechanical transformer. The titanium wire is meant for single use in resection of tissue. The screw type connection enables its easy and rapid fastening to the probe. The instrument may be used in any rigid endoscope, not only in neurosurgical procedures (endoscopic ventriculostomy in the base of the third brain ventricle, tumour removal in inaccessible and functionally important areas, removal of intervertebral discs), but also in other surgical specialities (heart, abdominal, thoracic, ophthalmological, gynecological, etc.), at a negligible risk of damaging the surrounding neural and vascular structures, and at strictly defined size of the lesion.</p> |
