Tissue Manipulation Device for Prostate Positioning
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Solution Overview
Problem
During prostatectomy procedures, especially laparoscopic ones, the prostate gland is difficult to position and maneuver, and there is a risk of damaging neurovascular bundles, which can affect penile functionality. Existing surgical devices do not provide precise manipulation of the prostate through the urethra and are not easily disassembled for cleaning and sterilization.
Innovation Solution
A tissue manipulation device with a handle portion, a shaft portion, and an end effector that can be deployed through the urethra to engage and precisely manipulate the prostate. The device includes a securing member that allows the end effector to be easily decoupled and removed for cleaning and sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional surgical device is used for prostate manipulation, then the device structure is simple, but the prostate cannot be precisely positioned and maneuvered
Solution Approach 1:
The device is divided into multiple functional segments including an end effector with tissue engaging arms, a shaft portion with articulation, and a handle portion with control mechanisms. This segmentation allows each component to contribute to precise prostate manipulation while maintaining overall device functionality.
Solution Approach 2:
The device incorporates articulation capabilities that allow the end effector to move from a linear configuration to an articulated configuration with multiple degrees of freedom. This enables three-dimensional manipulation of the prostate through the constrained space of the urethra, achieving precise positioning that would be impossible with a simple linear device.
2Ease of manufacture
If the end effector is permanently attached to the shaft, then the device structure is simple, but cleaning and sterilization become difficult
Solution Approach 1:
The coupling mechanism between the shaft portion and end effector is designed as a separable connection rather than a permanent attachment. This allows the end effector to be detached from the shaft for separate cleaning and sterilization processes, addressing the contradiction between assembly simplicity and ease of maintenance.
Solution Approach 2:
The end effector is extracted as a removable component from the overall device structure. The coupling mechanism enables easy detachment of the end effector from the shaft portion, allowing the critical sterilization area to be separated and processed independently while maintaining the integrity of the overall device assembly.
3Ease of repair
If the device is designed for easy disassembly, then cleaning and sterilization are facilitated, but the device complexity increases
Solution Approach 1:
The coupling mechanism is designed with localized features at the interface between the shaft portion and end effector, rather than requiring complex disassembly of the entire device. This includes specific engagement features such as bayonet couplings or threaded connections that can be quickly secured or released, providing easy disassembly for sterilization without unnecessarily complicating the overall device design.
Data Source
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AI summary
A tissue manipulation device includes an end effector assembly disposed at a distal end of a shaft portion, the end effector assembly including a tissue engaging assembly having first and second tissue engaging arms that each include a first arm segment, a second arm segment, and a third arm segment that are coupled by living hinges. When an adjustment member coupled to the end effector assembly is displaced from a first position to a second position, the end effector assembly transition from a first undeployed position, in which the first and second tissue engaging arms are disposed a first configuration adapted for insertion into a patient, to a second deployed position, in which the first and second tissue engaging arms are disposed a second configuration adapted to manipulate a tissue of the patient.