| 摘要 |
The catheter contains several reciprocally telescopically withdrawable tubes (11-14) and in the drawn-out position are lockable to one another. The different tubes are reciprocally lockable even in the pushed-together position and the thinnest (14) longest insertable tube is longer than the other tubes and in the front end is terminated by a flange (5), whilst at the other end has a threaded part (16). This threaded part in the pressed-together position extends outside the other tubes and on it is screwed to lock nut, possibly with a lock eyelet. The tubes are reciprocally lockable in the drawn-out position by means of threaded unions (15) in their ends or by means of runners running longitudinally in grooves (6), and which in the locked position are displaceable at an angle to the other grooves. The flange (5) has a greater outer dia. than the largest, rear tube (11) inner dia. |
