1. Field of the Invention
This invention relates to a disposable-type indwelling needle set provided with a needle tip composed of a soft synthetic resin.
2. Description of the Related Art
There is a conventionally known indwelling needle set comprising a metallic inner needle, which is provided with a flexible outer needle composed of a synthetic resin, outside the inner needle. A patient is pierced with the tip of the inner needle to insert the tip of the outer needle in a blood vessel together with the inner needle. Then, only the inner needle is removed to connect a connecting tube to the base of the outer needle whereby treatments such as drip infusion or the like are carried out.
However, complicated and careful operations are required for preventing infection and the like to carry out the sequence using the conventional indwelling needle set, in which only the inner needle is removed under such conditions that a blood vessel is pierced with the outer needle and then the connecting tube is connected to the base of the outer needle.
USPTO Backgrounds
USPTO Backgrounds