| 摘要 |
A catheter unit comprising a needle, an elongated blunting member coupled to a flash chamber and to a safety member, the blunting member having a blunt distal tip and an opened proximal end for allowing blood to flow generally directly to a porous member at the proximal end of the blunting member. The blunting member has a hollow lumen therebetween extending longitudinally through the needle such that the blunting member is disposed coaxially within the bore of the needle. |
