| 主权项 |
1. A medical device comprising:
a catheter, the catheter comprising a catheter proximal end, a catheter distal end, an inflation lumen, and a catheter external surface; a balloon, the balloon being attached to the catheter distal end in fluid communication with the inflation lumen; a sheath, the sheath comprising a sheath proximal end and a sheath distal end, the sheath being slidably disposed around the catheter and the balloon, the sheath distal end comprising an inner surface, an outer surface, and a lip that defines a sheath distal opening; a retraction cuff, the retraction cuff being slidably disposed on the catheter external surface proximal to the sheath proximal end and capable of being actuated in the proximal direction along a catheter longitudinal axis; and an inverting sleeve, the inverting sleeve having a first end, a second end, and a middle portion, the first end being operatively connected to the catheter distal end between the balloon and the sheath, the second end being operatively connected to the retraction cuff, and the middle portion variably extending along the inner surface of the sheath distal end, through the sheath distal opening, inverting over the lip of the sheath distal end, and along the outer surface of the sheath distal end. |
