Adjustable Suture Locking Apparatus for Minimally Invasive Surgery
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Solution Overview
Problem
In minimally invasive and interventional surgeries, existing methods for knotting and fixing sutures lack the ability to adjust suture lengths according to surgical situations, limiting their effectiveness and success rate.
Innovation Solution
An adjustable suture locking apparatus comprising a lock pin, an outer tube, a handle, and an adjusting device that allows for the timely adjustment of suture lengths by tightening or loosening the suture, enhancing surgical precision and success.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional suture locking methods are used in minimally invasive surgery, then the surgery can be performed through a small incision, but the suture length cannot be adjusted according to surgical situations
Solution Approach 1:
The lock pin is nested within the outer tube, with the lock pin capable of moving along the axial direction of the outer tube. The adjusting device is integrated into the handle structure, creating a compact nested configuration that enables suture length adjustment without significantly increasing overall device complexity
Solution Approach 2:
The lock pin is designed to be movable along the axial direction of the outer tube, transitioning between a first position (receiving suture) and a second position (locked suture). This dynamic positioning capability allows real-time adjustment of suture length during surgery, providing adaptability while maintaining a relatively simple device structure
2Reliability
If fixed length suture locking is used, then the device structure remains simple, but the surgical effect cannot be optimized according to different surgical situations
Solution Approach 1:
The adjusting device is pre-configured in the handle to enable suture length adjustment before and during the locking process. The lock pin is pre-designed with movable capability along the outer tube, allowing surgical effects to be optimized according to different situations without complicating the basic operation
Solution Approach 2:
The locking apparatus integrates multiple functions: the outer tube provides suture receiving and transmission, the lock pin provides both suture locking and length adjustment, and the adjusting device provides tensioning and loosening capabilities. This multi-functional design improves surgery success rate while maintaining ease of operation through unified device control
Data Source
AI summary
An adjustable suture locking apparatus includes a lock pin, an outer tube, a handle, and an adjusting device. The lock pin is used to receive or fix a suture. The outer tube defines a receiving cavity. The lock pin is disposed at a distal end of the receiving cavity. The handle includes a fixing portion coupled to a proximal end of the outer tube. The adjusting device is disposed on the fixing portion. The adjusting device is coupled to a proximal end of the suture and operable to adjust tensioning or loosening of the suture.