Single-Piece Uterine Cavity Resection Device with Adjustable Cutting Electrode
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Solution Overview
Problem
Current electric resection apparatuses for hysteroscopic surgery are bulky, require large uterine orifice expansion, and have fixed electrode angles, leading to increased cervical damage, longer procedure times, and higher costs due to their integrated and rigid design.
Innovation Solution
A single-piece uterine cavity electric resection device comprising a fixing rod, operating handle, traction wire, and cutting electrode, allowing for adjustable angle and retraction of the cutting electrode, enabling easier uterine cavity entry and exit without expanding the orifice, and facilitating more flexible and efficient lesion removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If electric resection rings and needles are fixed vertically to each other with the endoscope in an integrated structure, then the structure is stable and simple, but the diameter of the resectoscope becomes larger requiring uterine orifice expansion to 8-11mm causing cervical damage
Solution Approach 1:
The patent separates the electric resection apparatus from the endoscope, making them independent devices. The electric resection ring can be controlled to rotate and adjust its cutting surface angle independently from the endoscope, allowing the endoscope to maintain a smaller diameter while the resection apparatus provides the necessary cutting functionality without requiring large uterine orifice expansion.
2Reliability
If electric resection apparatuses are retracted into the inside of the resectoscope to avoid damage, then the cutting electrodes are protected, but the diameter of the resectoscope must be larger increasing cervical damage
Solution Approach 1:
By separating the electric resection apparatus from the endoscope, the cutting electrodes no longer need to be retracted into the endoscope. The independent design allows the electrodes to remain exposed and protected by their own housing structure, enabling the endoscope to maintain a smaller diameter that causes less cervical damage.
3Device complexity
If the cutting electrode angle cannot be adjusted independently during electric resection treatment, then the structure is simpler, but the electric resection treatment becomes complex and time-consuming when lesions develop
Solution Approach 1:
The patent enables the cutting surface angle of the electric resection ring to be adjusted dynamically during the procedure. The electric resection apparatus can rotate to change the angle of the cutting surface relative to the uterine wall, allowing adaptation to different lesion sizes and positions. This dynamic adjustment capability improves resection efficiency without requiring overly complex fixed multi-angle structures.
4Volume of moving object
If the resectoscope has a fine structure with integrated components, then the device is more compact, but it is easy to be damaged during operation increasing constraints on outpatient hysteroscopic surgery
Solution Approach 1:
The patent divides the hysteroscopic system into separate modules: the endoscope and the electric resection apparatus are independent devices. This segmentation protects the fine structural components of each device from damage that would occur in an integrated design, as each device can be handled and operated independently without the mechanical stresses of combined structures.
Data Source
AI summary
The present application discloses a single-piece uterine cavity electric resection device, which includes a fixing rod, an operating handle, a traction wire, and a cutting electrode. The traction wire is driven to move along the guide sliding sleeve on the fixing rod by the opening and closing the operating handle, so as to control the support body connected with the traction wire, and drive the cutting electrode to unfold, fold and change the opening angle under the limitation of pulling back or pulling of the tension wire. When entering and exiting the uterine cavity, the cutting electrode can be folded under the operating of the handle, which can make the electric resection device enter and exit the uterine cavity easily, and the cutting electrode is not easy to be damaged. During treatment, the angle of cutting electrode can be adjusted flexibly and accurately in a larger range, the treatment effect is better, and the operation process is safer. The present application can not only reduce the treatment cost and time, but also reduce the degree of treatment pain, and provides convenient conditions for completing corresponding surgical operations in the outpatient department.