Rotating Cutting Device for Minimally Invasive Hysterectomy
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Solution Overview
Problem
Current hysterectomy procedures, particularly total abdominal hysterectomy (TAH) and total vaginal hysterectomy (TVH), are associated with significant postoperative pain, longer hospital stays, and slower recovery times compared to laparoscopic approaches like total laparoscopic hysterectomy (TLH) and laparoscopic supracervical hysterectomy (LSH). However, these minimally invasive methods are underutilized due to limitations such as limited visibility, difficulty in manipulating internal organs, and increased complication rates, including vaginal cuff dehiscence.
Innovation Solution
A medical device comprising an elongate member with a handle and an end effector assembly at the distal end, equipped with a cutting device that can be deployed and rotated. The device includes an expandable member to occlude the vaginal canal and improve visibility and control during the procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If laparoscopic hysterectomy approaches (TLH/LSH) are used, then postoperative pain, hospital stay, and recovery time are reduced, but visibility, manipulation difficulty, and control of operative field worsen
Solution Approach 1:
The patent introduces a specialized laparoscopic device with a rotating cutting mechanism that acts as an intermediary tool between the surgeon and the uterine tissue. This device includes a cutting element that can rotate and cut through the uterus while being controlled via laparoscopic instruments, thereby enabling precise manipulation and control during minimally invasive surgery without requiring direct visual exposure or complex manual manipulation of internal organs
Solution Approach 2:
The patent replaces traditional mechanical manipulation methods with a controlled rotating cutting mechanism. Instead of manually manipulating and cutting uterine tissue with standard laparoscopic scissors or clamps, the invention uses a motorized or mechanically-actuated rotating blade that can precisely cut through the uterus along a controlled path, reducing manipulation difficulty while maintaining the benefits of minimally invasive approach
2Object-affected harmful factors
If laparoscopic hysterectomy approaches (TLH/LSH) are used, then postoperative pain and hospital stay are reduced, but visibility of operative field worsens
Solution Approach 1:
The patent merges multiple functions into a single laparoscopic device: the cutting element is integrated with the elongate member that provides both structural support and potential illumination capabilities. The device combines the cutting function, positioning function, and potentially illumination or visualization enhancement in one unified instrument, allowing the surgeon to maintain visibility while performing the cutting action during minimally invasive surgery
3Ease of operation
If traditional hysterectomy approaches (TAH/TVH) are used, then visibility and control of operative field are improved, but postoperative pain, hospital stay, and recovery time increase
Solution Approach 1:
The patent introduces a specialized laparoscopic device with a rotating cutting mechanism that acts as an intermediary tool between the surgeon and the uterine tissue. This device includes a cutting element that can rotate and cut through the uterus while being controlled via laparoscopic instruments, thereby enabling precise manipulation and control during minimally invasive surgery without requiring direct visual exposure or complex manual manipulation of internal organs
Solution Approach 2:
The patent replaces traditional mechanical manipulation methods with a controlled rotating cutting mechanism. Instead of manually manipulating and cutting uterine tissue with standard laparoscopic scissors or clamps, the invention uses a motorized or mechanically-actuated rotating blade that can precisely cut through the uterus along a controlled path, reducing manipulation difficulty while maintaining the benefits of minimally invasive approach
4Object-affected harmful factors
If laparoscopic hysterectomy is performed without specialized device, then invasiveness is reduced, but excision uniformity and precision worsen
Solution Approach 1:
The patent employs a dynamic rotating cutting mechanism that can rotate along a controlled path to cut through the uterine tissue. This rotating motion allows the cutting element to maintain a consistent angle and depth throughout the excision process, ensuring uniformity and precision in the cut while being delivered through a minimally invasive laparoscopic approach. The rotation can be controlled to follow a predetermined trajectory, enhancing precision without increasing invasiveness
Solution Approach 2:
The cutting mechanism is segmented into a rotating element that can be divided into discrete rotational positions or controlled in incremental steps. This segmentation allows for precise control of the cutting path and depth, enabling uniform excision of the uterus while maintaining the minimally invasive nature of the procedure through controlled, incremental cutting actions
Data Source
AI summary
A medical device for performing a surgical procedure may include an elongate member having a proximal end, a distal end, and a lumen extending therebetween. The medical device may also include a handle connected to the proximal end of the elongate member, an end effector assembly connected to the distal end of the elongate member, and a cutting device configured to extend from the end effector assembly, wherein the cutting device has a retracted configuration in which the cutting device is withdrawin into the end effector assembly and a deployed configuration in which the cutting device extends from the end effector assembly.