CPC A61M 25/0147 (2013.01) [A61B 90/04 (2016.02); A61M 25/0136 (2013.01); A61B 2090/0427 (2016.02); A61M 25/0138 (2013.01)] | 18 Claims |
1. A deflection system for deflecting a body lumen comprising:
a deflection mechanism, wherein the deflection mechanism includes:
a beam having a proximal end and a distal end, wherein the beam includes a neutral position and a curved-beam deflected position, wherein the beam is configured such that, in the deflected position, the beam is curved to a curved arc having a first radius of curvature,
a pull wire coupled to the distal end of the beam, wherein the beam is configured to be curved to the deflected position when a tension force is applied to the pull wire, and wherein at least a portion of the pull wire is configured to move to a displacement distance away from the beam when the tension force is applied to the pull wire, and
one or more constraint members operatively coupled to the beam, wherein each one of the one or more constraint members is configured to limit the displacement distance of the pull wire from the curved beam when the tension force is applied to the pull wire, wherein the one or more constraint members include a plurality of mini-beams, wherein the plurality of mini-beams includes a first mini-beam distally coupled to the beam and a second mini-beam proximally coupled to the beam, wherein each one of the plurality of mini-beams is shorter than the beam, and wherein the pull wire is located between the beam and each respective one of the plurality of mini-beams.
|