Endoscopic Foreign Body Retrieval Device with Segmented Capture Tool
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Solution Overview
Problem
Conventional endoscopic foreign body retrieval devices are limited by high cost, poor visibility, patient tissue injury, prolonged procedure times, and failure to retrieve foreign bodies, especially in emergency situations due to their design limitations.
Innovation Solution
A foreign body retrieval system comprising an endoscope with a distally attached retrieval device featuring a housing and a movable capture tool that defines a partially closeable aperture, allowing for improved grasping and retrieval of foreign bodies with reduced tissue trauma and cost, and enhanced visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional retrieval nets or forceps are used for foreign body retrieval, then the procedure can be performed with available equipment, but the procedure time is prolonged and retrieval success rate is reduced
Solution Approach 1:
The retrieval device is divided into distinct functional components: a capture tool with aperture for grasping the foreign body, and a separate securing mechanism. This segmentation allows each component to be optimized for its specific function, improving overall retrieval success while reducing the need for multiple attempts that prolong procedure time.
Solution Approach 2:
The device performs preliminary securing of the foreign body within the housing before final removal. The capture tool grasps the foreign body in advance, and the securing mechanism locks it in place before the device is withdrawn, ensuring successful retrieval without requiring multiple attempts.
2Object-affected harmful factors
If conventional retrieval devices are used, then the equipment is already available, but patient tissue injury and discomfort increase
Solution Approach 1:
The housing of the retrieval device comprises a transparent flexible membrane that allows visualization of the foreign body while providing a protective barrier. This flexible membrane reduces tissue trauma during insertion and manipulation compared to rigid conventional devices, while the transparency enables visual confirmation of foreign body capture.
Solution Approach 2:
The transparent housing acts as an intermediary between the clinician and the foreign body, allowing visual inspection without direct contact until capture is achieved. This reduces the risk of tissue injury during the retrieval process while maintaining device functionality.
3Illumination intensity
If conventional devices are used for foreign body retrieval, then the procedure can be performed, but visibility of the foreign body is poor
Solution Approach 1:
The transparent flexible membrane housing allows direct visualization of the foreign body through the device wall. This transparent structure provides inherent visibility without requiring additional illumination components, reducing device complexity while improving visibility of the target object.
4Adaptability or versatility
If conventional retrieval nets are used, then the device is simple in structure, but the ability to grasp or surround the entire foreign body is limited
Solution Approach 1:
The device separates the grasping function (capture tool with aperture) from the containment function (housing with securing mechanism). This segmentation allows the capture tool to be designed specifically for grasping various foreign body shapes and sizes, improving adaptability while the housing provides universal containment.
Solution Approach 2:
The capture tool features a movable aperture that can open and close dynamically to adapt to different foreign body shapes and sizes. This dynamic adjustment capability enhances grasping versatility for various objects while maintaining a relatively simple overall device structure.
Data Source
AI summary
The present application discloses endoscopy systems and devices for use therewith, wherein such systems and devices are designed for use in foreign body retrieval procedures. Moreover, the present application discloses methods of retrieving foreign bodies using the provided systems and devices. In one exemplary embodiment, a foreign body retrieval device capable for use with an endoscope is provided. The retrieval device comprises a housing and a capture tool disposed within and movable relative to the housing. The housing has a proximal end, a distal end, and at least one cavity. The proximal end of the housing is configured for attachment to the distal end of an endoscope and the distal end comprises an opening for at least partially receiving a foreign body in the at least one cavity. The capture tool defines an at least partially closeable aperture.