Patent ID: 6805688
Filing Date: 2004-10-19
Classification: A61B,A61M

Abstract:
Device for use in micro-invasive surgical procedures, comprising:a valve unit, a guide catheter connected to the valve unit, an instrument catheter, fitted with an instrument can be inserted through the valve unit into the guide catheter, wherein a guide shaft (13), into which a guide wire (12) is inserted, is connected to the instrument, and the guide wire (12) proximally emerges from the guide catheter at a proximal point of exit and the guide wire distally emerges from a distal end of the instrument, the distal end of the instrument being distal to a distal end of the guide shaft, a hydraulic bypass section (5) is provided as a proximal end section of the guide catheter (4), wherein the hydraulic bypass section (5) is positioned distal to the valve unit (1), and wherein, while at least part of the wall of the guide catheter (4) is close-fitting for the instrument (10), and a lumen cross section of the guide catheter corresponds essentially to a largest cross section of the instrument (10), a hydraulic bypass cross section of the hydraulic bypass section is larger than the lumen cross section, and the length of the hydraulic bypass section having the larger cross section corresponds to at least the length of the section of the instrument having the largest cross section, and the total length of the hydraulic bypass section (5) and the valve unit (1) is greater than the distance between the distal end of the instrument (10) and the proximal point of exit of the guide wire (12).