Resectoscope Movable Carriage for Flexible Work Element Positioning
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Solution Overview
Problem
Existing medical instruments, such as resectoscopes, require multiple work elements and holders to be stored in various configurations, increasing costs and posing a risk of electrical current application to unpowered elements, which can be dangerous.
Innovation Solution
A medical instrument with a movable carriage featuring multiple seats for work element holders, including one electrically insulated seat for unpowered elements, allowing for flexible positioning and secure electrical insulation without additional actuating devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple work elements are stored in various configurations to enable flexible positioning, then the adaptability of the instrument is improved, but the device complexity and cost increase
Solution Approach 1:
The instrument is divided into modular components: a carriage with multiple seats, and interchangeable work element holders. Each work element holder can be independently attached or detached from specific seats on the carriage, allowing flexible configuration without requiring multiple complete instrument assemblies.
Solution Approach 2:
The carriage is designed as a universal platform with multiple standardized seats that can accommodate different types of work element holders. This multi-functional design allows a single carriage to support various work elements (electrode, blade, etc.) through standardized attachment interfaces, reducing the need for multiple specialized holders.
2Adaptability or versatility
If multiple work elements are stored in various configurations to enable flexible positioning, then the adaptability of the instrument is improved, but the cost increases
Solution Approach 1:
The instrument is divided into modular components: a carriage with multiple seats, and interchangeable work element holders. Each work element holder can be independently attached or detached from specific seats on the carriage, allowing flexible configuration without requiring multiple complete instrument assemblies.
Solution Approach 2:
The carriage is designed as a universal platform with multiple standardized seats that can accommodate different types of work element holders. This multi-functional design allows a single carriage to support various work elements (electrode, blade, etc.) through standardized attachment interfaces, reducing the need for multiple specialized holders.
3Device complexity
If all work elements are secured at the same site on the carriage, then the device complexity is reduced, but the adaptability for different spatial positions is limited
Solution Approach 1:
The carriage provides multiple seats arranged in different spatial positions and orientations. Work element holders can be attached to different seats to achieve various spatial configurations relative to the endoscope viewing field, adding positional dimensionality without significantly increasing overall device complexity.
Data Source
AI summary
A medical instrument, in particular a resectoscope, comprises a distal first work element which is used for treating body tissue and which can be connected via an elongate work element holder to a handle at a proximal end for moving the work element, the handle having a carriage which is movable in the longitudinal direction of the work element holder and which has a first seat for releasable attachment of the work element holder to the carriage, and further comprises a receiver for an endoscope whose endoscope shaft, in the assembled state, extends substantially parallel to the first work element holder. The carriage has at least a second seat which is spaced apart from the first seat and provided for the first work element holder, or at least a second work element holder which at the distal end supports at least a second work element.