主权项 |
1. A sheath set for insertion into a blood vessel, the sheath set comprising:
an outer sheath comprising a proximal end, a beveled distal end, a lumen between the proximal end and the beveled distal end, an exterior surface, and a longitudinal axis, wherein the beveled distal end forms a beveled proximal edge with the exterior surface of the outer sheath and a beveled distal edge with the exterior surface of the outer sheath, wherein the outer sheath further comprises a rotational position indicator on the exterior surface of the outer sheath and along the longitudinal axis of the outer sheath, wherein the rotational position indicator is aligned with the beveled distal edge; and an inner sheath comprising a first beveled end, a second beveled end, a center between the first beveled end and the second beveled end, an exterior surface, and a longitudinal axis, the inner sheath located at least partially within the lumen of the outer sheath, wherein the first beveled end forms a first proximal edge with the exterior surface of the inner sheath and a first distal edge with the exterior surface of the inner sheath, wherein the second beveled end forms a second proximal edge with the exterior surface of the inner sheath and a second distal edge with the exterior surface of the inner sheath, wherein the first proximal edge and the second proximal edge are proximate the center relative to the first distal edge and the second distal edge, respectively, wherein the inner sheath further comprises a rotational position indicator on the exterior surface of the inner sheath and along the longitudinal axis of the inner sheath, wherein the rotational position indicator is aligned with the first beveled distal edge and the second beveled distal edge, and a first indicator on the exterior surface of the inner sheath indicative of the first beveled end of the inner sheath being aligned with the beveled distal end of the outer sheath when the first indicator is aligned with the proximal end of the outer sheath, and a second indicator on the exterior surface of the inner sheath indicative of the second beveled end of the inner sheath being aligned with the beveled distal end of the outer sheath when the second indicator is aligned with the proximal end of the outer sheath. |