Abscess Drainage Catheter with Composite Scalpel and Independent Stylets
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Solution Overview
Problem
The Seldinger technique for abscess drainage is time-intensive, causes patient pain, and risks pus spillage into the peritoneal cavity due to wire kinking and the need for extra hands to manage dilators and catheters, with limited CT scanner tracking of the guide wire and catheter position.
Innovation Solution
A scalpel with a composite material body for enhanced CT scanning and a catheter assembly with independently movable stylets that allow for precise fluid drainage and reduced leakage, eliminating the need for guide wires and minimizing patient discomfort by enabling accurate and rapid abscess drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the Seldinger technique is used for abscess drainage, then the catheter can be positioned in the abscess, but the procedure becomes time-intensive requiring an hour or more
Solution Approach 1:
The patent removes the guide wire from the Seldinger technique sequence, extracting the element that causes wire kinking and loss of access. The catheter is inserted directly through the needle without requiring guide wire placement, eliminating the time-consuming dilator and wire management steps while maintaining positioning accuracy through direct CT scan guidance.
Solution Approach 2:
The needle is positioned and confirmed on CT scan before insertion, and the catheter is pre-assembled with the needle. This preliminary preparation allows the catheter to be inserted directly into the abscess without requiring subsequent wire placement or dilator expansion steps, significantly reducing procedure time while maintaining precision.
2Measurement precision
If the Seldinger technique is used, then the catheter can be positioned, but substantial patient pain occurs with each dilator and wire manipulation
Solution Approach 1:
The patent eliminates the guide wire and dilator components from the procedure, removing the sources of mechanical trauma and pain. The catheter is inserted directly through the needle without requiring sequential dilator expansion or wire manipulation, thereby maintaining positioning accuracy while substantially reducing patient pain.
Solution Approach 2:
The patent skips the intermediate steps of wire placement and dilator expansion, rushing directly from needle insertion to catheter placement. This eliminates the prolonged manipulation of foreign objects in the abscess cavity, reducing pain while achieving the same positioning result more efficiently.
3Measurement precision
If the Seldinger technique is used, then the catheter can be positioned, but wire kinking occurs with each dilator passage
Solution Approach 1:
The patent removes the guide wire from the procedure entirely, eliminating the problem of wire kinking that occurs with each dilator passage. The catheter is inserted directly without requiring wire support, thereby maintaining positioning accuracy while ensuring reliable access without wire-related complications.
Solution Approach 2:
The patent skips the wire placement and protection steps, rushing directly to catheter insertion. This eliminates the sequential dilator passages that cause wire kinking, maintaining reliable access through direct catheter placement while avoiding wire-related reliability issues.
4Measurement precision
If the Seldinger technique is used, then the catheter can be positioned, but pus spillage into the peritoneal cavity occurs with each tract dilation
Solution Approach 1:
The patent removes the dilator sequence from the procedure, eliminating the source of pus spillage into the peritoneal cavity. The catheter is inserted directly through the needle without requiring sequential dilator expansion, thereby maintaining positioning accuracy while preventing pus leakage that occurs with traditional tract dilation.
Solution Approach 2:
The patent skips the dilator expansion steps that cause pus spillage, rushing directly from needle insertion to catheter placement. This eliminates the prolonged tract dilation process that allows pus to leak into surrounding tissues and the peritoneal cavity, while achieving the same catheter positioning result.
5Measurement precision
If the Seldinger technique is used, then the catheter can be positioned, but an extra set of hands is required to run dilators and avoid wire kinking
Solution Approach 1:
The patent removes the guide wire and dilators from the procedure, eliminating the need for an extra set of hands to manage these components. The simplified catheter-needle assembly requires only one operator to perform both positioning and insertion, reducing procedure complexity while maintaining positioning accuracy.
Solution Approach 2:
The patent merges the needle and catheter into a pre-assembled unit, combining two separate components into one integrated system. This eliminates the need for separate wire and dilator management, reducing the number of hands required and simplifying the overall procedure while maintaining catheter positioning accuracy.
6Measurement precision
If the Seldinger technique is used, then the catheter can be positioned, but CT scan tracking of wire and catheter position is limited until catheter is permanently placed
Solution Approach 1:
The patent removes the guide wire from the procedure, eliminating the component that cannot be tracked by CT scan. The needle and catheter assembly provides continuous radiopaque markers that can be tracked throughout the entire procedure, maintaining positioning accuracy while providing continuous position information without requiring permanent placement.
Data Source
AI summary
The present disclosure is directed to methods and devices for fluid drainage from an abscess of a patient.