Patent ID: 11925555
Assignee: TRICARES (SAS)
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A steerable sheath comprising
an elongated sheath, two or more actuators including a first actuator and a second actuator, at least two different sheath steering points including a first steering point and a second steering point, means for connecting the first actuator with the first steering point including a proximal cable, and means for connecting the second actuator with the second steering point including a distal cable;
a proximal pull ring including an open ring having two spaced apart ends, the proximal pull ring having an open space between the two ends of the open ring, and a distal pull ring, and the distal cable extending through the open space of the proximal pull ring;
wherein the distal cable extends through a first hole in the distal pull ring and returns in the opposite direction through a second hole in the distal pull ring, so that the distal cable has two parallel portions extending through the open space;
wherein the first steering point bends a first portion of the sheath in a first direction, and the second steering point bends a second portion of the sheath in an opposite direction;
wherein the first steering point is located distal to the second steering point when the steerable sheath is in an undeformed state having a linear orientation;
wherein the first portion of the sheath comprises a first hypotube oriented for bending in the first direction and the second portion of the sheath comprises a second hypotube oriented for bending in the opposite direction;
wherein the first and second steering points are located at least 10° from each other, optionally 10°, 20°, 30°, 45°, 90°, 120°, 140°, 160°, or 180° from each other.