| 摘要 |
<p>Invention refers to the field of medicine and is intended for ensuring of endoscopic tube's distal end bending and for biopsy performing in flexuous channels, as well as for increasing of convenience of endoscopic tube's transportation. Concretely the given invention refers to the endoscope, described in the patent LV12248 and hereinafter develops its design. Unlike the known endoscopes, the new one is supplied with: - a system ensuring endoscopic tube's distal end bending, in which the proximal ends of tubes are connected with the sources of excess and negative pressure, but the distal ends - with cylinders, which pistons are connected with traction lines, which second end is connected with distal ring of the cardan mechanism for bending the distal end of the endoscopic tube; - a system of introduction and extractions of biopsy forceps, which includes the sources of excess and negative pressure, which are connected to the cavity of biopsy channel, the entry in which is pressurized by the biopsy forceps seal, at that the surface of forceps is pressurized, but their distal end has a piston of biopsy channel; - a mechanism for introduction of endoscopic tube in the shape of cylinder with two pistons, which are interconnected by distancers and elastic tube, but the cavity between them is connected with the source of excess pressure, at that the cavity between the proximal seal of the endoscopic tube and the distal piston comprises a spring, which returns the pistons in their home position and is connected with the source of the negative pressure. On the fig. 4c,d are represented the mechanism of introduction of the endoscopic tube, working by means of excess and negative pressure, and elements of hydro-manual introduction end extraction system of biopsy forceps.</p> |
