| 摘要 |
The cannula has a cannula tube (20) comprising a filter, a distal opening and a medial opening, where the distal opening defines a flow direction perpendicular to a distal opening surface. The filter comprises filter openings (6), which are pierced in the flow direction or in an angle (17) to a horizontal plane (21) that perpendicularly stays on the surface. The angle is opened towards the medial opening. A core is brought into an injection molding tool in such a manner that the tube comprises the filter openings. Plastic is injected into the tool. Independent claims are also included for the following: (1) a method for extracting a secretion (2) a method for manufacturing a cannula tube. |
