Minimally Invasive Suturing Device for Papillary Muscle Repair
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Solution Overview
Problem
Current minimally invasive cardiac surgery techniques face challenges in efficiently and precisely manipulating sutures to perform neochordal replacement due to difficulty in using a suture needle through small openings, hindering the widespread adoption of ePTFE suture utilization for mitral valve repair.
Innovation Solution
A surgical suturing device with a forked guide tip and needle actuator that allows for precise placement and adjustment of sutures in papillary muscles, enabling coaxial loading and locking of replacement chords, facilitating efficient neochordal replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a suture needle is manipulated with forceps through a minimally invasive opening, then neochordal replacement can be performed, but the procedure becomes difficult and time consuming
Solution Approach 1:
A dedicated minimally invasive suturing device acts as an intermediary tool between the surgeon and the tissue, eliminating the need to manipulate standard forceps and needles through small openings. The device integrates needle delivery, suture deployment, and knot tying functions into a single specialized instrument that can operate through minimally invasive access ports.
Solution Approach 2:
The patent replaces the traditional manual manipulation of suture needles with forceps through small openings with a specialized mechanical delivery system. This system uses a catheter-based approach with integrated actuators to deploy sutures and tie knots remotely, substituting complex manual dexterity requirements with a designed mechanical delivery mechanism.
2Reliability
If traditional open surgical approaches are used for neochordal replacement, then suturing effectiveness is maintained, but invasiveness increases
Solution Approach 1:
The surgical procedure is segmented into distinct phases that can be performed through minimally invasive access: catheter insertion, suture deployment through the catheter, papillary muscle suturing, leaflet suturing, and knot tying. Each phase uses specialized components of the delivery system that can operate through small openings while maintaining surgical effectiveness.
Solution Approach 2:
The patent transitions from traditional two-dimensional planar manipulation in open surgery to three-dimensional spatial navigation through the cardiac chambers. The catheter-based system navigates through the heart's internal geometry to reach target sites, using the third dimension (depth through tissue) to achieve suturing goals without external incisions.
Data Source
AI summary
A surgical suturing device is disclosed. The surgical suturing device has a forked guide tip having a plurality of legs, wherein each of the plurality of legs comprises a proximal end, an anatomical variation, and a distal end. A method of chord replacement for a heart valve is also disclosed. A suture is placed in a papillary muscle using a surgical suturing device having a forked guide tip and a papillary suture. A leaflet suture is placed in a leaflet. The papillary suture and the leaflet suture are loaded in a suture fastener from opposite directions in a coaxial fashion. The length of the papillary suture and/or the leaflet suture are adjusted relative to the suture fastener to achieve a desired replacement chord length. The suture fastener is attached to the papillary suture and the leaflet suture to lock the desired replacement chord length.