Anastomotic Ring Device with Hinged Arms and Adhesive Apertures
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Solution Overview
Problem
Current anastomotic devices for creating gastrointestinal anastomoses, such as gastric bypasses for treating morbid obesity, lack effective mechanisms for secure and reliable tissue connection, particularly in transitioning between unactuated and actuated positions, and maintaining the anastomosis securely.
Innovation Solution
An anastomotic ring device with hinged arms and inflatable members, biased to maintain an actuated position, which is deployed using an applier to form a secure anastomosis between gastrointestinal lumens, and reinforced with adhesive through apertures for enhanced sealing and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anastomotic devices are used to create gastrointestinal anastomoses, then the basic connection between tissue walls is achieved, but the connection lacks sufficient security and reliability
Solution Approach 1:
The anastomotic device is divided into multiple functional segments: an anastomotic ring with hinged arms for mechanical connection, inflatable members for tissue approximation, and separate adhesive delivery mechanism. This segmentation allows each component to perform its specific function optimally while working together to achieve reliable tissue connection.
Solution Approach 2:
The device combines multiple materials and mechanisms: biocompatible polymeric materials for the ring and arms, inflatable elastomeric members, and biosurgical adhesive. This composite approach integrates mechanical fastening with chemical bonding to significantly enhance connection reliability beyond what any single mechanism could achieve alone.
2Reliability
If the anastomotic device transitions between unactuated and actuated positions to secure tissue connection, then the connection reliability is improved, but the operational complexity increases
Solution Approach 1:
The device features dynamic hinged arms that can transition between open and closed positions, and inflatable members that can be inflated or deflated. These dynamic elements allow the device to adapt to tissue geometry during deployment and maintain secure connection through controlled position changes, improving reliability while providing intuitive operation.
Solution Approach 2:
The hinged arms are pre-configured in an open unactuated position that facilitates easy insertion and deployment. The device is designed to transition automatically or with minimal actuation to the closed actuated position, performing the complex securing action with simple operator input, thus maintaining ease of operation while achieving reliable connection.
3Strength
If adhesive is applied through apertures in the anastomotic ring device, then the sealing and structural integrity are enhanced, but the device complexity increases
Solution Approach 1:
The anastomotic ring incorporates apertures (porous structure) that serve dual purposes: allowing adhesive to pass through to bond tissue layers and enabling visualization of tissue approximation quality. This porous design integrates the adhesive delivery function into the existing ring structure without requiring separate complex delivery systems.
Solution Approach 2:
The adhesive acts as an intermediary substance that bonds the tissue walls together, while the apertures in the ring serve as intermediaries for delivering the adhesive. This intermediary approach allows the adhesive to penetrate and bond tissue layers effectively while the ring structure provides the mechanical framework, distributing the functional complexity across multiple elements.
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 anastomotic ring device effectively secures anastomoses by transitioning between unactuated and actuated positions, maintaining the connection securely and allowing for tissue healing, with the adhesive providing additional sealing and structural support, suitable for various surgical procedures including gastric bypasses.
Implementation Method 1
anastomotic ring device with hinged arms and inflatable members
Implementation Method 2
reinforced with adhesive through apertures for enhanced sealing and structural integrity
Data Source
AI summary
An exemplary anastomosis device comprises a proximal ring, a distal ring, and a middle ring. The middle ring has apertures configured to communicate a fluid such as an adhesive. The exemplary anastomosis device also has arms joining the proximal ring to the center member and arms joining the distal ring to the center member. The anastomosis device is configured to move from an unactuated position, where it has a generally cylindraceous configuration, to an actuated position, where it has a generally rivet-like configuration. The anastomosis device may be used to provide and secure an anastomosis between adjacent tissue walls. Adhesive may be communicated through the apertures of the middle ring of the anastomosis device to seal or strengthen the anastomosis. An applier may be used to deploy the anastomosis device and to communicate the adhesive through the apertures.