Detachable Filter Module for Urinary Stone Aspiration
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Solution Overview
Problem
Current methods for removing urinary tract stones are laborious and inconvenient, requiring individual extraction with basket forceps and often necessitate laborious filter cleaning and replacement, which complicates maintenance and increases operational time.
Innovation Solution
A medical device featuring an accommodation unit with a lumen and an impeller holding unit that allows fluid aspiration of stones, equipped with a detachable filter for capturing targets, facilitating easier maintenance and operation by allowing separation of the filter from the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a filter is used to collectively remove calculus, then extraction efficiency is improved, but maintenance work becomes laborious and inconvenient
Solution Approach 1:
The medical device is divided into separable modules: the accommodation unit containing the filter can be detached from the impeller holding unit. This segmentation allows the filter to be easily removed for maintenance without disassembling the entire device, thus maintaining high extraction efficiency while improving maintenance convenience.
Solution Approach 2:
The filter is designed as a separate, extractable component within the accommodation unit. The captured calculus can be removed by taking out the filter from the accommodation unit, facilitating quick maintenance and reducing labor involved in filter replacement while preserving the collective extraction capability.
2Reliability
If basket forceps are used to pick calculus, then individual extraction is achieved, but the process becomes very laborious and inconvenient
Solution Approach 1:
Multiple calculus stones are collectively captured by the filter within the accommodation unit rather than being picked individually with basket forceps. This merging approach ensures complete extraction while significantly improving operational convenience by reducing the number of manual picking operations required.
Solution Approach 2:
The impeller generates fluid flow that moves calculus stones toward the filter for collective capture. This hydraulic mechanism automates the gathering process, replacing manual picking operations and improving both operational convenience and extraction completeness.
3Object-affected harmful factors
If the filter is minimized for introduction into living body, then invasiveness is reduced, but cleaning and replacement work becomes laborious
Solution Approach 1:
The accommodation unit with the filter is designed as a separable module that can be detached from the impeller holding unit. This segmentation allows the compact filter to maintain low invasiveness during introduction while enabling easy removal and maintenance without requiring complex disassembly procedures.
Solution Approach 2:
The filter within the accommodation unit can be extracted separately for cleaning and replacement. This design allows the filter to remain minimized for low invasiveness during use while facilitating straightforward maintenance by simply removing the filter from the accommodation unit.
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 improves operability and convenience in maintaining the filter, enabling quicker removal of multiple stones and reducing the risk of infection, while allowing for efficient handling and pathological examination of captured targets.
Implementation Method 1
an impeller holding unit that includes an impeller which causes a fluid to flow from the distal opening portion toward the proximal opening portion inside the living body so as to allow the lumen to aspirate the capturing target together with the fluid
Implementation Method 2
A filter for capturing at least one or more of the capturing target is arranged in the accommodation unit and/or the impeller holding unit
Data Source
AI summary
A medical device and method are disclosed which can facilitate maintenance work of a filter for capturing a capturing target, and which can improve operability or convenience in the maintenance work. The medical device has an accommodation unit, an impeller holding unit, and a filter. The accommodation unit accommodates a capturing target which is present inside a living body. The impeller holding unit includes an impeller which causes a fluid to flow from a distal side toward a proximal side inside the living body so as to cause the accommodation unit to aspirate the capturing target together with the fluid. Here, the impeller holding unit is configured to be attachable to and detachable from the accommodation unit on a proximal side of the accommodation unit. The filter is arranged in the accommodation unit and/or the impeller holding unit, and captures at last one or more of the capturing target.