Urethral Tissue Manipulation Device for Prostate Positioning
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Solution Overview
Problem
During prostatectomy procedures, especially laparoscopic ones, surgeons face challenges in precisely positioning and maneuvering the prostate gland and risk damaging neurovascular bundles, which can affect penile functionality. There is a need for a device that can be inserted through the urethra to facilitate precise manipulation of the prostate and minimize tissue damage.
Innovation Solution
A tissue manipulation device with a handle portion, shaft portion, and end effector that can be deployed and retracted through the urethra, allowing for precise positioning and manipulation of the prostate, while being designed for easy disassembly and cleaning. The device includes a securing member and wire mechanism that enables the end effector to transition between deployed and undeployed positions, and can be used in conjunction with robotic interfaces for enhanced control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a laparoscopic prostatectomy is performed, then the procedure can be performed through small incisions, but the prostate becomes difficult to position and maneuver
Solution Approach 1:
A manipulation device is introduced as an intermediary tool between the surgeon and the prostate gland. The device includes a shaft that can be inserted through the urethra to engage the prostate, and a manipulation element at the distal end that allows the surgeon to grasp, position, and maneuver the prostate precisely during laparoscopic dissection, thereby resolving the difficulty of positioning the prostate through small incisions
2Reliability
If precise dissection is performed to minimize damage to neurovascular bundles, then penile functionality is preserved, but the complexity of the procedure increases
Solution Approach 1:
The manipulation device serves as an intermediary that provides enhanced control and precision during dissection. By allowing the surgeon to precisely position and hold the prostate under tension, the device enables careful dissection near the neurovascular bundles without requiring overly complex surgical techniques, thus protecting penile functionality while maintaining procedural simplicity
Solution Approach 2:
The device allows preliminary engagement and positioning of the prostate through the urethra before the main dissection begins. The prostate can be grasped and positioned in advance, providing continuous visual control and tension on the tissue during the dissection process, which simplifies the overall procedure while ensuring protection of surrounding structures
3Ease of operation
If a device is inserted through the urethra to engage the prostate, then precise manipulation is enabled, but the device requires complex cleaning and sterilization
Solution Approach 1:
The manipulation device is divided into separable components, including a handle portion, a shaft portion, and an end effector assembly. This segmentation allows the distal components that contact tissue to be easily detached and sterilized separately from the handle, simplifying the cleaning and sterilization process while maintaining the precision manipulation capabilities of the complete device
Data Source
AI summary
A tissue manipulation device including a securing member pivotably coupled to a handle portion and is pivotably displaceable between an engaged position and a disengaged position. A distal end of a wire is coupled to an end effector of the tissue manipulation device, and the proximal end of the wire is removably coupled to an engagement portion of the securing member when the securing member is in the engaged position and is disengaged from the engagement portion of the securing member when the securing member is in the disengaged position. When the securing member is in the engaged position, the wire couples the securing member and the end effector such that when the securing member is displaced from a first securing member position to a second securing member position, the end effector is displaced from a undeployed position to a deployed position.