Iris Clip Repositioning for Endoscopic Tissue Sealing
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Solution Overview
Problem
Endoscopic procedures that involve tissue resection or treatment through the gastrointestinal tract can lead to complications such as intraabdominal hypertension and seeding of cancer cells, and often require effective hemostatic sealing of tissue openings.
Innovation Solution
A clipping system with a rotatable iris mechanism clip mounted on an endoscope, allowing for precise control over the opening and closure of the clip to securely seal tissue, enabling review and repositioning before final deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If endoscopic procedures are performed to remove larger lesions or treat tissue issues, then the treatment effectiveness is improved, but the risk of intraabdominal hypertension and cancer cell seeding increases
Solution Approach 1:
The patent converts the potentially harmful tissue opening created during endoscopic procedures into a beneficial sealed structure. The clip system closes the tissue opening that would otherwise allow cancer cell seeding and intraabdominal hypertension, transforming the harmful effect of the procedure into a protective seal.
Solution Approach 2:
The clip acts as an intermediary element between the tissue opening and the surrounding tissue. It provides a mechanical seal that prevents direct communication between the treated area and the abdominal cavity, thereby reducing the risk of cancer cell seeding and intraabdominal hypertension while maintaining treatment effectiveness.
2Adaptability or versatility
If tissue openings are created during endoscopic procedures, then access to underlying tissue is improved, but the need for hemostatic sealing increases
Solution Approach 1:
The patent merges the functions of tissue access and hemostatic sealing into a single integrated clip system. The clip simultaneously provides access to underlying tissue through its opening configuration and achieves hemostatic sealing through its closing mechanism, eliminating the need for separate sealing procedures.
Solution Approach 2:
The clip system performs multiple functions: it provides access to underlying tissue for treatment, seals the tissue opening to prevent cancer cell seeding, and achieves hemostasis. This multi-functionality addresses the complexity of requiring both access and sealing in a single device.
3Reliability
If a clip system with iris mechanism is used to seal tissue openings, then the hemostatic sealing is improved, but the device complexity increases
Solution Approach 1:
The patent employs a dynamic iris mechanism that allows the clip to transition between open and closed states. This dynamic structure enables reliable hemostatic sealing through controlled closure while managing device complexity through a systematic mechanical approach to opening and closing movements.
Solution Approach 2:
The clip system is segmented into multiple components including the cap, clip body, iris mechanism, and coupling members. This segmentation allows each component to perform its specific function while collectively achieving reliable hemostatic sealing, with the complexity distributed across manageable subsystems.
4Ease of operation
If the clip is designed to be repositionable, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent incorporates a preliminary coupling mechanism that allows the clip to be attached to the endoscope before final deployment. This preliminary action enables easy repositioning and adjustment during the procedure while managing device complexity through a pre-configured coupling system that simplifies the repositioning operation.
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 system minimizes the risk of complications by providing hygienic tissue collection and secure sealing of tissue openings, optimizing treatment procedures within the GI tract.
Implementation Method 1
the first cap member includes a helical feature and the second cap member includes a coupling arrangement engaging the helical feature so that linear movement of the first cap member relative to the second cap member rotates the first cap member relative to the second cap member
Implementation Method 2
a plurality of first flexible members coupled to the first part and a corresponding plurality of second flexible members that are coupled to the second part. Each of the first flexible members is coupled to a corresponding one of the second flexible members to form an iris mechanism operating to alter a size of a central opening of the clip
Implementation Method 3
the first and second flexible members are configured to bias the iris mechanism toward the fully closed configuration
Data Source
AI summary
A system includes a cap having first and second cap members, a clip, and first and second coupling members. The clip includes a first part rotatably coupled to a second part and first members coupled to the first part and corresponding second members coupled to the second part. Each of the first members is coupled to a corresponding one of the second members to form an iris mechanism operating to alter a size of a central opening of the clip when the parts are rotated relative to one another between open/closed configurations. The first coupling member is coupled between the first cap member and the first part, and the second coupling member is coupled between the second cap member and the second part so that, upon rotation of the first cap member relative to the second cap member, the first part is rotated relative to the second part.