Specimen Retrieval Device With Dual-Opening Receptacle
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Solution Overview
Problem
In minimally invasive surgical procedures, existing specimen retrieval devices often fail to minimize contact between tumor tissue and healthy tissue during removal, and they lack efficient mechanisms for navigating through small body openings and articulating to access specimens effectively.
Innovation Solution
A specimen retrieval device with a tubular body, articulation shaft, and pivotable support member, featuring a specimen receptacle with two openings, allows for controlled articulation and minimizes contact with healthy tissue by using resilient fingers and an articulation mechanism to facilitate specimen collection and removal through small incisions or natural orifices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-opening specimen receptacle is used, then the device structure is simple, but the specimen cannot be effectively retrieved through small body openings without contacting healthy tissue
Solution Approach 1:
The specimen receptacle is divided into two separate openings: a first opening for receiving the specimen and a second opening for removing the specimen. This segmentation allows the specimen to be introduced through one opening and removed through the other, enabling effective specimen retrieval through small body openings without the need for large incisions or complex manipulation that would contact healthy tissue.
2Adaptability or versatility
If a rigid support member is used, then the receptacle maintains stable position, but the device cannot articulate to access specimens effectively through small openings
Solution Approach 1:
The support member is designed with pivotable joints that allow it to articulate relative to the tubular body. This dynamic configuration enables the support member to change its orientation and position within the body cavity, allowing the device to access specimens through small openings and navigate complex anatomical pathways while maintaining stable support for the receptacle during specimen retrieval operations.
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 effectively reduces tissue contact during specimen retrieval by articulating the receptacle to access and remove specimens through small openings, ensuring minimal contamination and efficient specimen collection in minimally invasive procedures.
Implementation Method 1
the distal portion of the articulation shaft coupled to the support member, wherein movement of the articulation shaft within the longitudinal bore causes pivotable movement of the support member in relation to the tubular body
Implementation Method 2
the support member includes a pair of resilient fingers which support the specimen receptacle
Implementation Method 3
the proximal portion of the articulation shaft is threaded and the longitudinal bore includes a threaded portion, the proximal portion of the articulation shaft residing in the threaded portion of the longitudinal bore of the tubular body
Data Source
AI summary
A specimen retrieval device includes a tubular body defining a longitudinal bore, an articulation shaft disposed within the longitudinal bore of the tubular body, and a specimen receptacle affixed to a support mechanism at the distal portion of the tubular body. In embodiments, the specimen receptacle has two openings which may be used to transfer a tissue specimen from within a patient's body cavity to outside of the patient's body.