Rotatable Electrocautery End Tool for Cutting and Coagulation
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Solution Overview
Problem
Existing surgical instruments face challenges in effectively managing bleeding during procedures by simultaneously cutting and coagulating tissues, particularly in highly vascularized areas, and there is a need for instruments that can intuitively match the surgeon's motions for enhanced precision and control.
Innovation Solution
A surgical instrument with a rotatable end tool and manipulation part that converts rotational motions into linear and actuation motions, featuring a power transmission system with jaw pulleys and blade wires, allowing for intuitive control and simultaneous cutting and coagulation, and includes a cutting-relay assembly to convert rotational motions into linear motions for precise tissue manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electrosurgical instruments are used to cut and coagulate tissues simultaneously, then bleeding is reduced and surgical efficiency is improved, but the instrument structure becomes more complex requiring multiple electrodes and electrical energy sources
Solution Approach 1:
The patent combines cutting and coagulation functions into a single bipolar electrosurgical instrument. The bipolar electrode structure integrates both cutting edge and coagulation surfaces on one instrument, allowing simultaneous cutting and coagulation without requiring separate monopolar and coagulation instruments, thus improving surgical efficiency while managing structural complexity through functional integration
Solution Approach 2:
The bipolar electrosurgical instrument is designed to perform multiple functions: cutting tissues, coagulating blood vessels, and sealing lymphatic vessels. The single instrument with bipolar electrode configuration can adapt to different surgical tasks by adjusting electrical energy parameters, reducing the need for multiple specialized instruments and simplifying the overall surgical setup
2Manufacturing precision
If robotic arms with multiple degrees of freedom are used to enhance surgical precision, then cutting precision is improved, but the control system complexity increases significantly
Solution Approach 1:
The robotic arm is divided into multiple independent segments, each with its own degree of freedom and controlled by separate actuators. This segmentation allows precise control of each joint independently, enabling complex end-effector movements through coordinated simple motions, thus achieving high cutting precision while managing control complexity through modular architecture
Solution Approach 2:
The robotic system introduces multiple spatial dimensions of movement (pitch, yaw, roll) to the cutting tool. By adding rotational degrees of freedom around different axes, the system achieves precise positioning and orientation of the cutting edge at the end effector, transforming simple linear control into multi-dimensional precise control that enhances cutting accuracy
3Ease of operation
If the end tool is made rotatable in multiple directions to match surgeon's motions intuitively, then ease of operation is improved, but the mechanical transmission complexity increases
Solution Approach 1:
Wireless communication modules and sensors act as intermediaries between the surgeon's manual manipulations and the robotic end tool. The system captures motion data from manipulators, processes it through control algorithms, and translates it into corresponding end tool movements, providing intuitive control while shielding the surgeon from complex mechanical transmission details through software-based motion mapping
Data Source
AI summary
Provided is a surgical instrument, and more particularly, a surgical instrument for electrocautery with improved insulation performance, capable of being mounted on a robot arm or operated manually for use in laparoscopic surgery or various other surgeries.