Tissue Attachment Device with Retaining Structure
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Solution Overview
Problem
Current medical devices for closing tissue perforations are complex, time-consuming, and often fail to properly appose large perforations or allow for controlled and repositionable insertion, leading to difficulties in healing and tissue manipulation.
Innovation Solution
A device comprising a body with a tissue attachment portion and a suture connected to a stylet, allowing for controlled insertion and repositioning within the tissue, with a retaining structure for secure deployment and retrieval, enabling effective apposition and tensioning of tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clips, staples, anchors, sutures, or adhesives are used to close tissue perforations, then tissue approximation is achieved, but the procedure becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple functions (tissue attachment, suture anchoring, and device deployment) into a single integrated attachment device. The device merges the tissue penetration function, suture retention function, and deployment mechanism into one unified structure, eliminating the need for separate clips, staples, or anchors, thereby simplifying the overall procedure while maintaining reliable tissue approximation
Solution Approach 2:
The attachment device serves multiple functions simultaneously: it penetrates tissue to create an anchor point, retains sutures for tissue approximation, and enables controlled deployment through the delivery system. This multi-functional design replaces multiple separate devices (clips, staples, sutures, anchors) with a single universal device, reducing procedural complexity and time
2Length of moving object
If a device is long enough to extend through tissue, then tissue penetration is achieved, but uncontrolled insertion may lead to inadvertent puncturing
Solution Approach 1:
The device is pre-configured within a delivery system that controls its deployment. The attachment device is loaded in a constrained state within the delivery catheter, with the tissue attachment portion initially retracted or protected. This preliminary configuration allows the device to be transported safely to the target site and deployed only when needed, preventing inadvertent puncturing during insertion while maintaining the necessary length for effective tissue penetration
Solution Approach 2:
The delivery system acts as an intermediary between the operator and the attachment device. It provides controlled release mechanisms that regulate when and how the device is deployed into the tissue. The delivery system mediates the transition from a safe, constrained state during insertion to an active, deployed state at the target site, preventing harmful inadvertent puncturing while enabling effective tissue penetration
3Reliability
If a device is deployed to close a perforation, then tissue closure is achieved, but repositioning is difficult when initial placement is incorrect
Solution Approach 1:
The attachment device incorporates dynamic elements that allow for adjustment and repositioning after initial deployment. The device can be manipulated to modify its position or orientation within the tissue, and the suture attachment mechanism allows for repositioning before final tightening and securing. This dynamic capability enables correction of placement errors while maintaining reliable tissue closure
4Object-affected harmful factors
If minimally invasive techniques are used to deploy devices, then patient trauma is reduced, but device delivery and placement becomes more difficult
Solution Approach 1:
The attachment device is designed to be nested within a delivery catheter system. The device is contained within the catheter during transport and deployment, allowing minimally invasive delivery through existing access routes. The nested configuration enables the device to navigate through narrow passages and be deployed at the target site without requiring large incisions or complex exposure procedures, thus reducing patient trauma while maintaining ease of delivery
Data Source
AI summary
An attachment system for tissue apposition or manipulation and a method of attaching a suture to a tissue for apposition or manipulation of the tissue are provided. The system includes an attachment device including a body having a proximal portion and a distal portion. The attachment device further includes a tissue attachment portion operably connected to the distal portion wherein the tissue attachment portion has a shape that is maintained throughout a tissue apposition procedure. The attachment device also includes a suture operably connected to the body and having an unconnected proximal end and a retaining structure at the proximal portion of the body. The retaining structure configured to releasably mate with a complementary retaining structure on a stylet.