Endoscope Needle System for Minimally Invasive PEG Placement
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Solution Overview
Problem
Current methods for establishing external percutaneous connections to internal organs or bodily lumens, such as PEG tubes, are inefficient and may cause trauma due to the need for external piercing and require complex procedures for device installation.
Innovation Solution
A medical system comprising an endoscope with a needle and safety cap, along with a wire, is used to create a percutaneous fluidic connection by inserting the needle through the skin and stomach wall, allowing for secure placement of medical devices like PEG tubes with reduced trauma and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If external piercing methods are used to establish percutaneous connections, then access to internal organs is achieved, but tissue trauma and procedural complexity increase
Solution Approach 1:
The needle is disposed within the endoscope lumen, creating a nested configuration where the piercing instrument is contained within the diagnostic instrument. This allows both instruments to be introduced through a single oral route rather than requiring separate external access points, thereby reducing tissue trauma while maintaining procedural control.
Solution Approach 2:
Instead of introducing the needle from the external abdomen surface toward the stomach (traditional percutaneous approach), the needle is introduced through the mouth, advanced through the esophagus and stomach, and then used to pierce from the inside outward. This inverted approach eliminates the need for external skin incisions and reduces tissue trauma.
2Productivity
If traditional PEG tube installation methods are used, then device placement is achieved, but installation time and procedural steps increase
Solution Approach 1:
The system combines the endoscope and needle into a single integrated assembly, allowing both diagnostic visualization and therapeutic piercing to be performed simultaneously through the same access route. This merging of functions eliminates the need for separate procedural steps and reduces overall installation time.
Solution Approach 2:
The needle is pre-loaded within the endoscope lumen before patient introduction. This preliminary preparation allows the piercing instrument to be immediately deployed once the endoscope reaches the target location, eliminating the need for separate instrument introductions and reducing procedural steps.
3Manufacturing precision
If needle piercing is performed without internal guidance, then quick access is achieved, but precision and safety decrease
Solution Approach 1:
The endoscope serves multiple functions: it provides diagnostic visualization of the stomach interior, guides the needle to the precise target location, and maintains procedural control during piercing. This multi-functional instrument combines the roles of diagnostic tool, guide, and support structure, thereby improving precision while maintaining procedural control.
Data Source
Figure 1
Figure 2A~2B
Figure 3~4A
AI summary
The present invention provides devices for creating external percutaneous fluidic connections. In one embodiment, a needle is configured for extending through an endoscope. The needle includes a distal sharp tip and a lumen extending therethrough. The needle extends out of the endoscope within a body cavity to create an incision through a patient's skin. A safety cap is attached over the distal sharp tip without occluding the needle lumen. A wire is inserted through the needle lumen such that it extends from outside the body at the incision, through the body, and outside the body at the patient's mouth. After removing the needle and the endoscope from the body, a PEG device is coupled to the wire at the patient's mouth, and the PEG device is delivered through the upper Gl tract and out through the incision.