Tissue Clip with Biasing Mechanism for Minimally Invasive Anastomosis
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Solution Overview
Problem
Minimally invasive surgical techniques face challenges in performing arterial replacement or bypass grafting due to difficulties in precisely aligning and suturing tissues, especially in cardiovascular surgery, where the small size of arteries and limited time for the procedure exacerbate the complexity, and current methods lack a reliable system for widespread use.
Innovation Solution
A tissue clip system with a body portion and biasing mechanism, deployed using a deployer with a handle and actuating mechanism, allows for the precise grasping and interconnection of tissues, enabling secure closure of anastomoses and treatment of aneurysms, and can be visualized using ultrasound for accurate placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If minimally invasive surgical techniques are used, then patient recovery time and surgical trauma are reduced, but the ability to precisely align and suture tissues is compromised
Solution Approach 1:
The tissue clip acts as an intermediary device that bridges the gap between minimally invasive access and precise tissue connection. The clip is delivered through a catheter-based delivery system that allows it to reach the target site through small incisions, while the clip itself provides precise alignment and secure connection of tissue edges through its grasping arms and closing mechanism, eliminating the need for traditional suturing through large incisions
Solution Approach 2:
The invention replaces the traditional mechanical suturing system (needles, threads, and manual knot-tying requiring large incisions) with a deployable tissue clip system. The clip is delivered pre-loaded in a delivery catheter and deployed at the target site through minimal incisions, using spring-loaded or shape-memory actuation mechanisms to open and close the grasping arms around tissue edges, providing secure connection without the complexity of minimally invasive suturing
2Reliability
If traditional suturing methods are used for arterial anastomosis, then tissue connection reliability is improved, but surgical time and complexity increase significantly
Solution Approach 1:
The tissue clip is pre-loaded and prepared within the delivery catheter before reaching the surgical site. The grasping arms are positioned and ready to engage tissue edges, and the closing mechanism is pre-assembled. Upon deployment, the clip automatically opens, grasps the tissue, and closes to secure the anastomosis, eliminating the time-consuming steps of manual needle passage, suture tying, and knot securing that characterize traditional suturing methods
Solution Approach 2:
The invention extracts the critical function of tissue connection from the complex suturing process and consolidates it into a single deployable clip device. The clip encapsulates the alignment, grasping, and securing functions in one integrated component that can be delivered and deployed rapidly through minimal incisions, removing the need for multiple sutures and knots while maintaining anastomosis reliability
3Object-affected harmful factors
If minimally invasive techniques are used for cardiovascular surgery, then patient morbidity is reduced, but the ability to perform complex procedures like arterial bypass grafting is limited
Solution Approach 1:
The tissue clip device is designed with universal applicability across multiple cardiovascular procedures. The same basic clip design can be used for arterial anastomosis in bypass grafting, closure of vascular puncture sites, repair of arterial defects, and other cardiovascular interventions. The delivery catheter and clip mechanism can be adapted to different anatomical sites and procedural requirements, providing a versatile platform that maintains patient morbidity benefits while expanding procedural capability
Data Source
AI summary
A tissue clip for adjoining tissues including a body portion, a biasing mechanism interconnecting the body portion to a tissue grasping mechanism, the grasping mechanism having a first condition wherein the grasping mechanism is extending against and away from the body portion and a second condition wherein the grasping mechanism is biased against the body portion. A tissue clip and deployer combination. A method of interconnecting tissue by deploying the tissue clip, puncturing tissue to be interconnected with the tissue clip, and interconnecting the tissue. A method of treating an aneurism by deploying the tissue clip at an aneurism site, closing off the aneurism site with the tissue clip, and treating the aneurism. A method of imaging a surgical procedure with ultrasound by modifying a surface of a metal surgical instrument, and imaging the metal surgical instrument with ultrasound during a surgical procedure.