Prostate Ablation Device with Radially Extending Electrodes

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing cystoscopic devices are difficult to stabilize and control during transurethral resection of the prostate (TURP) procedures, leading to risks of damaging healthy tissue and complications.

Innovation Solution

A medical device with a shaft assembly featuring a rotatable shaft and electrodes that can be independently moved radially outward from the shaft, allowing for enhanced stability and control during tissue removal procedures, utilizing a handle assembly with fluid control and RF energy management for precise tissue ablation and resection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing cystoscopic devices are used for TURP procedures, then the procedure can be performed, but the device is difficult to stabilize and control, leading to risk of damaging healthy tissue

Engineering Contradiction:

Improvecontrol stabilityVSAvoiddamage to healthy tissue

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device is divided into multiple independent components: a stabilizing shaft assembly with electrodes that can be independently positioned, and a separate resection tool. This segmentation allows the stabilizing electrodes to be precisely controlled to avoid healthy tissue while maintaining overall device stability during the procedure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The device performs preliminary stabilization and positioning actions before tissue resection begins. The shaft assembly with electrodes is positioned and stabilized first, creating a controlled framework that prevents accidental damage to healthy tissue during subsequent resection operations.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If existing cystoscopic devices are used for TURP procedures, then the procedure can be performed, but the device lacks enhanced stability and control, reducing ability to accurately remove unwanted tissue

Engineering Contradiction:

Improveaccuracy of tissue removalVSAvoiddevice stability

Core Design Contradiction:

Manufacturing precisionVSStability of the object's composition

Solution Approach 1:

The shaft assembly with electrodes acts as an intermediary stabilizing structure between the operator and the tissue resection process. This intermediate component provides enhanced control and stability, enabling precise positioning and accurate removal of unwanted tissue while maintaining overall device stability throughout the procedure.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

The device provides improved stability and control during tissue removal, reducing the risk of damaging healthy tissue and enabling accurate ablation and resection of unwanted tissue, thus enhancing the effectiveness of TURP procedures.

Implementation Method 1

energizing the electrode with electrical energy

Methodology Applied

Scientific EffectRadiofrequency energy: Electromagnetic Induction

Implementation Method 2

engaging the tissue with the energized electrode

Methodology Applied

Scientific EffectThermal ablation: Ablation

Data Source

PatentUS9848947B2Devices and methods for prostate tissue ablation and/or resection

Publication Date: 2017.12.26 BOSTON SCIENTIFIC SCIMED INC

AI summary

According to one aspect of the present disclosure, a medical device may include a shaft assembly. The shaft assembly may include a sheath having a first lumen. The shaft assembly may also include a rotatable shaft extending through the first lumen. The rotatable shaft may be rotatable relative to the sheath, and may have a second lumen and a side opening. The shaft assembly may also include an electrode extending through the second lumen and the side opening, and radially outwardly from the rotatable shaft. The electrode may be movable relative to the rotatable shaft.