Instruments for electrocautery surgery

Abstract

The present invention relates to an electrocautery surgical instrument, more specifically, to an electrocautery surgical instrument with improved insulation performance, which can be attached to a robotic arm or manually operated for use in laparoscopic surgery or various other surgeries.

Claims

1. An end tool comprising a first jaw and a second jaw, each rotatably formed, and rotatably formed in two or more directions, An operating unit for controlling the rotation of the end tool in the two or more directions, A power transmission unit including a first jaw wire connected to the operating unit and transmitting the rotation of the operating unit to the first jaw, and a second jaw wire connected to the operating unit and transmitting the rotation of the operating unit to the second jaw, It is formed extending in a first direction (X-axis), with the end tool engaged at one end and the operating part engaged at the other end, and includes a connecting part that connects the operating part and the end tool, The aforementioned end tool is A first jaw pulley is formed to engage with the first jaw and to be rotatable about a first rotation axis, A second jaw pulley engages with the second jaw and is formed to be rotatable about an axis substantially identical to or parallel to the first rotation axis, The end tool further includes a blade assembly that moves between the proximal and distal portions of the end tool and is positioned adjacent to the first jaw pulley or the second jaw pulley, The power transmission unit is The blade assembly is at least partially in contact with the blade wire, which transmits the driving force necessary for the movement of the blade to the blade, and further includes a blade wire. The aforementioned operating unit is The cutting operation unit further includes a cutting lever that can rotate around a single axis. The blade wire is connected to the cutting unit and the blade, respectively, and the rotational motion of the cutting unit is converted to the linear motion of the blade via the blade wire, characterized in that it is a surgical instrument.

2. The aforementioned cutting operation unit is A cutting intermediary member rotates around a rotation axis different from the rotation axis of the cutting lever, and is connected to the cutting lever by a cutting lever wire, Includes a cutting intermediary assembly formed to be connected to the cutting intermediary member, which converts the rotational motion of the cutting intermediary member into linear motion, The surgical instrument according to claim 1, characterized in that the rotational motion of the cutting operation unit is switched to the linear motion of the blade wire via the cutting intermediary assembly.

3. The surgical instrument according to claim 2, characterized in that the cutting lever wire transmits the rotation of the cutting lever to the cutting intermediary member, thereby generating rotational motion of the cutting intermediary member.

4. The aforementioned cutting operation unit is The surgical instrument according to claim 3, characterized in that it includes a cutting lever tube that houses at least a portion of the cutting lever wire and is formed to be bend to a certain extent.

5. One end of the cutting lever tube is fixed to one side of the cutting lever, and the other end of the cutting lever tube is fixed to one side of the cutting intermediary member. The surgical instrument according to claim 4, characterized in that the cutting lever wire is formed to be movable along the cutting lever tube within the cutting lever tube.

6. The aforementioned cutting lever wire includes a first cutting lever wire and a second cutting lever wire. The first cutting lever wire is wound around the cutting lever rotation shaft in a first direction, and then wound around the cutting intermediary member in a first direction. The surgical instrument according to claim 3, characterized in that the second cutting lever wire is wound around the cutting lever rotation axis in a second direction opposite to the first direction, and then wound around the cutting intermediary member in the second direction.

7. The surgical instrument according to claim 6, characterized in that when the first cutting lever wire is wound around the cutting intermediary member in response to the operation of the cutting lever, the second cutting lever wire is unwound from the cutting intermediary member, and when the first cutting lever wire is unwound from the cutting intermediary member, the second cutting lever wire is wound around the cutting intermediary member.

8. The aforementioned cutting intermediary assembly is A cutting intermediary wire connected to the aforementioned cutting intermediary member, The cutting mediation wire and the cutting mediation block engaged in at least one region are included. The surgical instrument according to claim 2, characterized in that one end of the cutting mediation wire is fixed to the cutting mediation member, at least one region of the cutting mediation wire is connected to a pulley, and the cutting mediation wire forms a loop-shaped path.

9. The surgical instrument according to claim 8, characterized in that the movement path of the cutting mediator wire includes a linear section from at least one section in a linear direction.

10. The surgical instrument according to claim 9, characterized in that the cutting mediation block moves distally or proximal to the operating section within the straight section.

11. The aforementioned blade assembly The connecting portion includes a guide tube that is positioned within the connecting portion and is formed to be bent to a certain extent, The surgical instrument according to claim 10, characterized in that at least a portion of the blade wire is housed within the guide tube.

12. The surgical instrument according to claim 11, characterized in that the blade wire penetrates the inside of the guide tube, one end of the blade wire is connected to one side of the distal portion of the cutting mediation block, and the other end of the blade is connected to the blade.

13. The surgical instrument according to claim 11, characterized in that the movement path of the blade wire is guided by the guide tube.

14. The aforementioned guide tube is The surgical instrument according to claim 11, characterized in that one end is fixed to the end tool and the other end is fixed to the operating part, but the guide tube between the two ends is bent.

15. The surgical instrument according to claim 1, wherein the blade moves linearly along the extending direction of the connecting portion.

16. The surgical instrument according to claim 1, wherein the end tool can perform pitch motion, yaw motion, actuation motion, and linear movement motion of the blade in accordance with the control of the operating unit.

17. The surgical instrument according to claim 16, wherein the end tool performs at least one of the following actions: pitch, yaw, and actuation, and the blade is capable of linear movement separately from or simultaneously with the above one or more actions.

18. A guide tube is formed to house at least a portion of the aforementioned blade wire and to be bent to a certain extent, The surgical instrument according to claim 1, comprising an actuation hub positioned between the first jaw and the second jaw, engaging with the first jaw and the second jaw, having a hollow interior, and into which one end of the guide tube engages.

19. The surgical instrument according to claim 18, characterized in that the guide tube and the blade wire housed within the guide tube are formed to pass through the hollow formed inside the actuation hub.

20. The surgical instrument according to claim 18, characterized in that the guide tube does not directly engage with the first jaw or the second jaw.

21. The first jaw and the second jaw are arranged so as to intersect each other with the first point as the center of rotation. The surgical instrument according to claim 1, characterized in that the rotation centers of the first jaw pulley and the second jaw pulley are formed at a second point spaced apart from the first point.

22. The surgical instrument according to claim 21, characterized in that the first point is located distal to the second point on the first jaw and the second jaw.

23. The first rotation axis includes a first sub-axis and a second sub-axis. The surgical instrument according to claim 21, characterized in that the first sub-axis and the second sub-axis are spaced apart to a certain extent, and the blade assembly is partially housed between the first sub-axis and the second sub-axis.

24. The first jaw and the second jaw perform actuation while rotating around the actuation rotation axis of the end tool. The aforementioned operating unit is It includes an actuation operation unit that controls the actuation motion of the end tool, The actuation operation unit is, An actuation pulley that rotates around a single actuation axis, The system includes an actuation lever that engages with the actuation pulley and rotates integrally with the actuation pulley, The surgical instrument according to claim 1, characterized in that the actuation rotation axis of the operating unit is not parallel to the actuation rotation axis of the end tool.

25. The first jaw wire and the second jaw wire are wound around and fixed to the actuation pulley. The surgical instrument according to claim 24, characterized in that the first jaw and the second jaw rotate in opposite directions to each other in response to the rotation of the actuation pulley.

26. The first jaw wire and the second jaw wire each include a pair of wires, One end of the first jaw wire is wound around the actuation pulley in a first direction, and the other end is wound around the first jaw pulley in a third direction. One end of the other of the first jaw wire is wound around the actuation pulley in a second direction opposite to the first direction, and the other end is wound around the first jaw pulley in a fourth direction opposite to the third direction. One end of the second jaw wire is wound around the actuation pulley in the second direction, and the other end is wound around the second jaw pulley in the third direction. The surgical instrument according to claim 25, characterized in that one end of the other second jaw wire is wound around the actuation pulley in the first direction, and the other end is wound around the second jaw pulley in the fourth direction.

27. The aforementioned operating unit is The surgical instrument according to claim 1, further comprising a sealing operation portion formed on one side of the cutting operation portion and rotatable about a rotation axis.

28. The seal operation section is, It includes a sealing button formed to protrude from one end, The surgical instrument according to claim 27, characterized in that pressing the seal button causes a contact portion formed at the other end of the seal operating portion to contact another contact portion within the operating portion and transmit an electrical signal.

29. The surgical instrument according to claim 27, characterized in that a first electrode is formed on the surface of the first jaw facing the second jaw, and a second electrode is formed on the surface of the second jaw facing the first jaw.

30. The surgical instrument according to claim 29, characterized in that cauterization of tissue is performed while an electric current flows through the first electrode and the second electrode.

31. The end tool of a surgical instrument according to claim 30, characterized in that, once the cauterization is complete, the blade wire moves, and accordingly the blade cuts the tissue while moving from the proximal side to the distal side of the first jaw.

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