End tool of surgical instrument and surgical instrument including the same
AssigneeLivsmed Inc.
InventorsJung Joo Lee, Hee Jin Kim, Dong Kyu Jang
Life of this patent
Estimating the term…
Abstract
According to the present disclosure, provided is a surgical instrument in which an actual motion of bending an end tool or performing a surgical treatment intuitively matches a motion of a manipulation portion corresponding thereto. In detail, to this end, provided are an end tool having various degrees of freedom, a manipulation portion having a structure to enable intuitive manipulation of a motion of the end tool, and a driving force transmission portion for transmitting a driving force of the manipulation portion to the end tool so that the end tool operates as manipulated by the manipulation portion.
Claims17
An end tool of a surgical instrument, the end tool comprising:
- a first jaw and a second jaw capable of rotating independently of each other;
- a J11 pulley coupled to the first jaw and formed to be capable of rotating around a first axis;
- a J21 pulley coupled to the second jaw and formed to be capable of rotating around an axis that is substantially the same as or parallel to the first axis;
- an end tool hub comprising a pair of jaw pulley coupling portions formed to face each other and a guide portion connecting the pair of jaw pulley coupling portions, wherein at least parts of the J11 pulley and the J21 pulley are accommodated in a space formed by the pair of jaw pulley coupling portion and the guide portion, and a region adjacent to the J11 pulley and the J21 pulleys in the guide portion has a section that is curved with a certain radius of curvature, the section being on a plane perpendicular to the first axis;
- a J12 pulley and a J14 pulley formed at one side of the end tool hub to be capable of rotating around a second axis forming an angle with respect to the first axis;
- a J22 pulley and a J24 pulley formed at one side of the end tool hub to be capable of rotating around an axis that is substantially the same as or parallel to the second axis;
- and
- the guide portion is integrally formed with the pair of jaw pulley coupling portions as one body,
- wherein a first jaw wire sequentially contacts the J12 pulley, the J11 pulley, the guide portion, and the J14 pulley, and a second jaw wire sequentially contacts the J22 pulley, the J21 pulley, the guide portion, and the J24 pulley,
- wherein two strands of the first jaw wire wound around the J11 pulley are disposed by the guide portion at one side with respect to a plane perpendicular to the second axis and passing through the first axis, and
- wherein two strands of the second jaw wire wound around the J21 pulley are disposed by the guide portion at another side with respect to the plane perpendicular to the second axis and passing through the first axis.
Dependencies are inferred from the claim text.