| 摘要 |
<p>The invention relates to a catheter of the type having a needle and a cannula which is used for the introduction thereof, using just one hand, into the blood channels of a living body, preferably a human. The inventive catheter comprises three independent assembled bodies. The first of said bodies is a hollow cylinder which is open at the rear end thereof and which has a cannula solidly connected to the front end of same, said first body also comprising guide means which are assembled to the guide means of a second body or casing. The aforementioned casing, which is open at the upper part thereof, front and rear, is provided with a needle which is solidly connected to the front end of said casing and which is provided with a semi-circular section along most of the length thereof. A plunger is inserted inside the cylinder, said plunger being perforated and hollow along the entire length thereof. The upper part of said plunger is provided with a flange and push element and the rear end thereof is provided with a connection.</p> |
