| 摘要 |
In a blood extraction device with a support that presents a cannula in the way of a double needle, shaped with a sharp cutting edge which is wrapped with comfort by means of a rubber valve in the way of a flexible elastic tube closed at one end facilitated with a low assemble cost a secure adjustment of the rubber valve in the support or adapter, when the support is provided with a deformable tight element which is fixed to the rubber valve by a lateral exterior surface. |
