Diathermic Endotherapeutic Device for Protected Snare and Knife Interchange
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Solution Overview
Problem
Current endoscopic procedures for removing colon polyps, such as EMR and ESD, require multiple instruments to be interchanged, complicating the operation and increasing the risk of contamination and tissue trauma.
Innovation Solution
A diathermic endotherapeutic device with a flexible sheath and a control wire that allows for interchangeable treatment members, such as a snare and knife, using a protection member to ensure only one instrument is exposed at a time, minimizing tissue trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple instruments are interchanged during endoscopic procedures, then different treatment functions (cutting, snaring) can be performed, but operational complexity increases and risk of contamination and tissue trauma increases
Solution Approach 1:
The patent combines multiple treatment instruments (snare and knife) into a single integrated device that can be advanced through the endoscope together. The snare is positioned on the control wire and the knife is positioned on the snare, allowing both instruments to be delivered through a single channel and exchanged as a unified system, thereby reducing operational complexity while maintaining treatment versatility
Solution Approach 2:
The integrated device serves multiple functions by incorporating both snare and knife instruments in one configuration. The device can perform both snaring and cutting operations without requiring separate instrument exchanges, making it a universal tool that handles multiple treatment requirements through a single integrated system
2Adaptability or versatility
If multiple instruments are interchanged during endoscopic procedures, then different treatment functions can be performed, but risk of contamination increases
Solution Approach 1:
By merging multiple instruments into a single integrated delivery system, the number of times instruments need to be exchanged is reduced. The unified device maintains a continuous sealed environment through the endoscope channel, minimizing opportunities for contamination during instrument exchange while still providing multiple treatment functions
3Adaptability or versatility
If multiple instruments are interchanged during endoscopic procedures, then different treatment functions can be performed, but tissue trauma increases
Solution Approach 1:
The integrated device allows both snare and knife instruments to be positioned and exchanged within a single sealed channel, preventing the treatment members from contacting tissue during exchange. This eliminates unintended trauma that would occur if instruments were removed and reinserted separately, while still enabling multiple treatment functions to be performed
4Adaptability or versatility
If treatment members are completely removed during interchange, then instrument exchange is possible, but procedure time increases
Solution Approach 1:
By combining multiple treatment members into a single integrated device, the exchange process occurs internally within the endoscope channel rather than requiring complete removal from the patient. This internal exchange mechanism significantly reduces procedure time while maintaining full instrument interchangeability for different treatment functions
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
Facilitates seamless instrument interchange during procedures like ESD without complete removal, reducing operational complexity and minimizing tissue trauma.
Implementation Method 1
a control wire configured to move axially within the flexible sheath
Implementation Method 2
a protection member that is configured to cover the second treatment member
Implementation Method 3
Diathermic endotherapeutic device
Implementation Method 4
An electrosurgical current is then passed through the snare in order to transect the tissue
Data Source
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AI summary
A treatment device includes a flexible sheath; a control wire that can move axially within the flexible sheath; a first treatment member connected to a distal end of the control wire; a second treatment member connected to a distal end of the first treatment member; and a protection member that covers the second treatment member depending on the mode of operation. When the treatment device is in a first treatment mode, the second treatment member projects from a distal end of the protection member. When the treatment device is in a second treatment mode, the first treatment member projects from the distal end of the flexible sheath, and the protection member covers the second treatment member.