Medical snare device
An embodiment of the present disclosure provides a medical snare device including a main body unit that is open on both sides and has a hollow interior, a guide unit that is relatively movable inside the main body unit and has a hollow interior, and a snare unit including a capture unit having a capture hole unit formed therein, and a plurality of support units that are relatively movable inside the guide unit and connected to the capture unit, wherein the plurality of support units are connected to preset points of the capture unit, respectively.
1 . A medical snare device comprising:
a main body unit that is open on both sides and has a hollow interior;
a guide unit that is relatively movable inside the main body unit and has a hollow interior; and
a snare unit comprising a capture unit having a capture hole unit formed therein, and a plurality of support units that are relatively movable inside the guide unit and connected to the capture unit,
wherein the plurality of support units are connected to preset points of the capture unit, respectively, and are arranged to face each other with respect to a center of the capture hole unit to apply a pulling force toward the guide unit,
wherein the capture unit forms a single closed loop defining a perimeter of the capture hole unit,
wherein the single closed loop comprises a plurality of arcs serially connected to one another end-to-end to form a continuous perimeter,
wherein each of the plurality of arcs is convex in a direction radially outward from the center of the capture hole unit,
wherein adjacent arcs of the plurality of arcs meet at a connection point,
wherein each of the plurality of support units is fixedly coupled to a respective one of the connection points,
wherein a distance from the connection point to the center of the capture hole unit is shorter than a distance from a center of each of the plurality of arcs to the center of the capture hole unit, and
wherein a radius of curvature of each of the plurality of arcs is smaller than a radius of curvature of an imaginary circle connecting center points of the plurality of arcs.
2 . The medical snare device of claim 1 , wherein the plurality of support units are integrally formed in a preset section.
3 . The medical snare device of claim 1 , wherein the guide unit comprises a plurality of guide bodies that provide moving paths of the plurality of support units, respectively.
4 . The medical snare device of claim 3 , wherein the plurality of guide bodies are integrally formed in a preset section.
5 . The medical snare device of claim 1 , wherein the main body unit is formed of a polymer material.
6 . The medical snare device of claim 1 , wherein the plurality of support units are formed of a metal or polymer material.