Debridement Device Bipolar RF Sealing Sinus Surgery
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Solution Overview
Problem
Existing medical devices for cutting and sealing tissue during sinus surgery lack a mechanism for effectively sealing tissue to reduce bleeding, which is particularly challenging due to the complex and precision-oriented nature of sinus surgery.
Innovation Solution
A medical device that combines mechanical cutting with bipolar RF energy and saline delivery to achieve Transcollation® sealing, allowing for controlled thermal energy application to tissue while minimizing charring and optimizing hemostasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical cutting components are used for tissue removal during sinus surgery, then cutting effectiveness is improved, but tissue sealing capability deteriorates
Solution Approach 1:
The patent combines mechanical cutting components with bipolar RF energy delivery components into a single integrated device. The cutting elements (rotating or oscillating blades) are positioned adjacent to bipolar electrodes, allowing simultaneous or sequential mechanical debridement and tissue sealing without requiring separate devices or procedures.
Solution Approach 2:
The device performs multiple functions: mechanical tissue cutting/removal via rotating or oscillating blades, tissue sealing via bipolar RF energy, and saline delivery for Transcollation® technology. This multi-functional approach eliminates the need for multiple separate devices during sinus surgery procedures.
2Productivity
If RF energy is used to ablate tissue, then tissue removal capability is improved, but charring and tissue sticking worsen
Solution Approach 1:
Saline is introduced as an intermediary substance between the bipolar RF electrodes and the tissue. The saline facilitates Transcollation® technology, which delivers controlled thermal energy to seal tissue while preventing the excessive heating that causes charring and sticking. The saline acts as a heat transfer medium that distributes energy more evenly.
Solution Approach 2:
The device delivers bipolar RF energy at controlled parameters (450-500 kHz frequency range) with saline delivery to modify the thermal profile. This parameter control, combined with saline cooling and heat distribution, prevents the uncontrolled thermal buildup that leads to charring while maintaining effective tissue sealing.
3Productivity
If aggressive ablation is used to remove tissue, then removal efficiency is improved, but tissue structural integrity deteriorates
Solution Approach 1:
The device applies different treatment modalities to different areas: mechanical cutting for bulk tissue removal where structural integrity is less critical, and gentle bipolar RF sealing with saline for areas where preserving tissue structure is important. This localized approach optimizes both removal efficiency and structural preservation in different surgical zones.
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
The device effectively seals tissue during and after surgery, reducing bleeding and the need for additional blood management products, while maintaining the structural integrity of the tissue.
Implementation Method 1
bipolar RF energy...provides energy in the range of 450 to 500 kHz
Implementation Method 2
RF energy...provides controlled thermal energy to tissue
Implementation Method 3
saline delivery to achieve Transcollation® sealing
Data Source
AI summary
Devices, systems and methods for cutting and sealing of tissue such as bone and soft tissue. Devices, systems and methods include delivery of energy including bipolar radiofrequency energy for sealing tissue which may be concurrent with delivery of fluid to a targeted tissue site. Devices include debridement devices which may include a fluid source. Devices include inner and outer shafts coaxially maintained and having cutters for debridement of tissue. An inner shaft may include electrodes apart from the cutter to minimize trauma to tissue during sealing or hemostasis. Devices may include a single, thin liner or sheath for electrically isolating the inner and outer shafts.