Vaginal Wall Incision Instrument with Rotatable Guide
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Solution Overview
Problem
Current laparoscopic hysterectomy procedures face challenges in accurately separating the uterus from the vaginal canal due to the need for coordinated operations between the uterine manipulator, dissection instrument, and laparoscope, making straight separation along the separating line difficult without tilting the uterus.
Innovation Solution
A vaginal wall incision instrument with a conductive incision portion that can be inserted into the vaginal canal, featuring a rotatable interior portion with a guide hole to direct the incision portion between the uterine cervix and vaginal canal, allowing for separation along a circular path without tilting the uterus, using a high-frequency current for incision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a laparoscope, uterine manipulator, and dissection instrument are used for total laparoscopic hysterectomy, then the uterus can be tilted and incised, but the operation complexity increases due to coordinated operations of multiple instruments
Solution Approach 1:
The patent combines the incision function and tilting function into a single vaginal wall incision instrument. The instrument includes an incision portion for cutting tissue and an interior portion that can tilt relative to the exterior portion, eliminating the need for separate uterine manipulator and dissection instrument operations.
Solution Approach 2:
The vaginal wall incision instrument performs multiple functions: it can incise the vaginal wall, tilt to adjust the separating line angle, and guide the incision along the separating line. This multi-functional design replaces multiple specialized instruments with one versatile device.
2Manufacturing precision
If the dissection instrument approaches the separating line in a direction intersecting the separating line, then incision can be performed, but straight separation along the separating line becomes difficult without tilting the uterus
Solution Approach 1:
The interior portion of the instrument can tilt dynamically relative to the exterior portion during the incision process. This dynamic adjustment allows the separating line to be angled according to the actual anatomical conditions, enabling precise separation while maintaining ease of operation.
Solution Approach 2:
The tilting angle of the interior portion can be adjusted to change the direction of the incision portion relative to the separating line. This parameter adjustment enables the instrument to adapt to different anatomical configurations and achieve precise separation along the separating line.
3Manufacturing precision
If the uterus is tilted using the uterine manipulator, then straight separation along the separating line is enabled, but cooperative operation of multiple instruments is required
Solution Approach 1:
The tilting function previously requiring a separate uterine manipulator is merged into the vaginal wall incision instrument itself. The interior portion tilts relative to the exterior portion, providing the same function as the manipulator without requiring a separate device.
Solution Approach 2:
The tilting function is extracted from the external manipulator system and integrated into the incision instrument itself. This extraction eliminates the need for coordinated operation between manipulator and dissection instrument.
4Manufacturing precision
If multiple instruments are used for coordinated operation, then the uterus can be tilted and incised, but the operation time increases
Solution Approach 1:
Multiple functions (incision, tilting, guiding) are merged into a single instrument, eliminating the need for coordinated operations between multiple instruments and reducing the time required for setup and execution.
Solution Approach 2:
The instrument is pre-configured with the tilting capability and guide hole structure, allowing the separating line to be established and followed in a single continuous motion without intermediate adjustments or additional instrument manipulations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise and efficient separation of the vaginal canal along a predetermined separating line, reducing the need for cooperative operations and minimizing tissue damage, while maintaining stability and reducing the risk of erroneous contact with other biological tissues.
Implementation Method 1
a conductive member (17) made of a conductive material... capable of being inserted into a vaginal canal... the distal end portion of the conductive member (17) penetrates through the vaginal wall (111)
Data Source
AI summary
A vaginal wall incision instrument includes a main body portion that is capable of being inserted into a vaginal canal; an incision portion that protrudes from a distal portion of the main body portion in a direction intersecting a center line of the vaginal canal and is formed by a conductive material; and an operating portion, wherein the main body portion includes an exterior portion and an interior portion, wherein the interior portion includes a contact portion, wherein a guide hole is configured on the interior portion, wherein the guide hole is capable of guiding the conductive member in a direction toward a boundary between the uterine cervix and the vaginal canal, and wherein the incision portion separates the vaginal canal along a circumference whose center is the center line of rotation by rotating the interior portion about the center line of rotation with respect to the exterior portion.