Access device

摘要

An access device places a medical article within a body space of a patient. The device has a needle section that includes an elongated body and a needle hub. The device further includes a dilator portion that has a dilator and a dilator hub. The dilator is coaxially disposed and slideable over the elongated body of the needle section. The device further includes a sheath section that has a sheath and a sheath hub. The sheath is coaxially disposed and slideable over the dilator. The device further includes a first locking mechanism operably disposed between the needle hub and the dilator hub to inhibit at least unintentional axial movement between the needle section and the dilator portion and a second locking mechanism operably disposed between the dilator hub and the sheath hub to inhibit at least unintentional axial movement between the dilator portion and the sheath section.

主权项

1. An access device for placing a medical article within a body space, comprising:
a needle section comprising an elongated needle body, a sharp distal tip, a side opening, and a first locking structure, the side opening in communication with an interior of the needle section such that a body fluid can flow through from the distal tip through the side opening, and the first locking structure being disposed proximal of the side opening; and a medical article section coaxially disposed and slideable over the needle body, the medical article section comprising a tubular portion and a second locking structure, wherein the first locking structure and the second locking structure form a locking apparatus configured to move into a locked position from an unlocked position to arrest axial movement of the needle body at least in the distal direction once the distal tip of the needle body is drawn into the medical article section to protect the distal tip.