Surgical Lysing Device with Oscillating Tip for Tissue Dissection
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Solution Overview
Problem
Current surgical techniques for minimally invasive tissue dissection lack efficient tools that can simultaneously perform sharp dissection, blunt dissection, and electrosurgical cutting/coagulation without the need to switch instruments, and there is a need for improved energy delivery systems that minimize tissue trauma and unwanted electrical discharge.
Innovation Solution
A surgical lysing device with a shaft and a lysing tip featuring beads and a nonconductive strut, along with conductive segments for energy delivery, and an oscillating motor unit for precise tissue manipulation, combined with an electrosurgical system that includes a grasping member and jaw assemblies to engage the lysing tip for efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple surgical instruments are used for sharp dissection, blunt dissection, and electrosurgical cutting/coagulation, then each function can be performed effectively, but the surgical procedure becomes more complex and time-consuming due to instrument switching
Solution Approach 1:
The patent combines multiple surgical functions (sharp dissection via beads, blunt dissection via shaft, and electrosurgical cutting/coagulation via conductive segments) into a single integrated lysing device. This allows the surgeon to perform all necessary tissue dissection and coagulation tasks without switching instruments, directly resolving the contradiction by merging multiple functions into one device.
Solution Approach 2:
The lysing device is designed as a universal instrument that can perform multiple surgical functions simultaneously. The beads provide sharp dissection capability, the shaft provides blunt dissection capability, and the conductive segments provide electrosurgical cutting and coagulation capability. This multi-functionality eliminates the need for multiple separate instruments while maintaining all necessary surgical capabilities.
2Productivity
If electrosurgical energy is delivered through conductive structures, then cutting and coagulation efficiency is improved, but unwanted electrical discharge and tissue trauma may occur
Solution Approach 1:
The patent applies local quality by making only specific portions of the device conductive (the lysing segments positioned at strategic locations between beads) while keeping other portions nonconductive (the shaft and bead structures). This localized conductivity ensures that electrosurgical energy is delivered precisely where needed for cutting and coagulation, while nonconductive portions prevent unwanted electrical discharge and reduce tissue trauma in areas where energy delivery is not required.
Solution Approach 2:
The nonconductive shaft and bead structures serve as intermediaries that isolate the conductive lysing segments from direct contact with surrounding tissues. This intermediary structure allows controlled energy delivery through the conductive segments while preventing uncontrolled electrical discharge, thereby improving energy delivery efficiency while minimizing tissue trauma.
3Ease of operation
If the lysing tip structure is simplified, then manufacturing and operation become easier, but precise tissue manipulation and energy delivery control may be compromised
Solution Approach 1:
The lysing tip is segmented into distinct functional components: nonconductive beads for sharp dissection, a nonconductive shaft for blunt dissection, and conductive lysing segments for electrosurgical cutting and coagulation. This segmentation allows each component to perform its specific function with high precision while maintaining overall operational simplicity, as each segment is optimized for its particular purpose.
Solution Approach 2:
The device incorporates dynamic elements including an oscillating motor unit that can oscillate the lysing tip at controlled frequencies, and a rotatable lysing tip that can be rotated to different orientations. These dynamic capabilities enhance tissue manipulation precision and energy delivery control without significantly complicating operation, as the oscillation and rotation are automatically controlled by the system.
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
Enables efficient and precise minimally invasive tissue dissection with reduced tissue trauma and minimized electrical discharge, allowing for simultaneous cutting and coagulation during surgical procedures.
Implementation Method 1
at least one conductive lysing segment between each pair of adjacent beads of the lysing tip... configured to deliver energy to tissue during a surgical procedure
Implementation Method 2
the at least one distal conductive lysing segment is configured to deliver energy to tissue during a surgical procedure
Implementation Method 3
a nonconductive strut extending between the first bead and the second bead... the first bead and the second bead each comprises a nonconductive material
Implementation Method 4
an oscillating motor unit configured to oscillate the lysing tip at a frequency of between about 21 kHz and about 40 kHz
Data Source
AI summary
Lysing surgical instruments and related systems and methods. In some embodiments, the instrument may comprise a lysing tip comprising at least one bead. The at least one bead may comprise an at least substantially electrically non-conductive surface and at least one lysing member defining at least one lysing segment extending within a recess defined, at least in part, by the at least one bead. The at least one bead may also protrude both distally and proximally relative to the at least one lysing member.