| 摘要 |
A needle includes a pointed end provided with a penetrating tip having a point-shaped edge to initially prick a membrane when the membrane is penetrated. The outer edges on the pointed end in the area between the point-shaped edge and a position beyond the opening are rounded so that after the initial penetration, the pointed end will push the membrane material away rather than cutting the membrane material. - A needle (1) comprises a pointed end (3) provided with a penetrating tip (4) and an opening (6) for letting a liquid in and/or out in a main direction (7), which is parallel to the longitudinal extension of the needle. The penetrating tip has a point-shaped edge (8) to initially prick a membrane (2) when the membrane is penetrated. The outer edges on the pointed end in the area between the point-shaped edge and a position beyond the opening are rounded so that after the initial penetration, the pointed end will push the membrane material away rather than cutting the membrane material. - Independent claims are also included for: - (1) an arrangement for transferring a liquid comprising a membrane and a needle for penetrating the membrane; and - (2) manufacturing the above needle comprising cutting a tubular blank obliquely for obtaining the pointed end provided with the penetrating tip and the opening for letting a liquid in and/or out in the main direction, providing the penetrating tip with the point-shaped edge, and rounding all outer edges present on the pointed end in the area between the point-shaped edge and the position beyond the opening. |
