Bipolar Clamp Pressure Adjustment by Tissue Impedance and Energy Mix
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical instruments lack the ability to automatically adjust pressure based on energy modality, leading to suboptimal tissue treatment outcomes.
Innovation Solution
A surgical instrument with a control circuit that determines tissue impedance and type, selects appropriate energy modalities, generates signal waveforms, and adjusts compression force by changing the gap between the tissue and clamp arm based on the proportion of these waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If compression force is manually adjusted for different energy modalities, then tissue treatment can be performed, but the surgical instrument cannot automatically optimize pressure based on tissue type and energy modality combination
Solution Approach 1:
The control circuit automatically determines tissue impedance, identifies tissue type, selects appropriate energy modality, and adjusts compression force without requiring manual intervention. The system serves itself by using sensors to detect tissue properties and autonomously optimizing the treatment parameters based on the detected tissue characteristics and selected energy modality.
Solution Approach 2:
The system uses tissue impedance sensing to detect tissue properties, then uses this feedback information to automatically adjust compression force and select appropriate energy modality. The control circuit continuously monitors tissue impedance and modifies treatment parameters in real-time based on the feedback from tissue response.
2Use of energy by moving object
If compression force is increased for all energy modalities, then energy delivery is improved, but tissue damage may occur with modalities that require lower pressure
Solution Approach 1:
The system applies different compression forces tailored to each specific tissue type and energy modality combination. Instead of using a uniform high compression force for all cases, the control circuit determines the optimal local pressure level based on tissue impedance characteristics and the selected energy modality, ensuring each tissue receives precisely the pressure it requires for effective treatment without damage.
Solution Approach 2:
The system dynamically changes the compression force parameter based on detected tissue impedance and selected energy modality. The control circuit adjusts the mechanical pressure parameter in real-time to match the requirements of different tissue types and energy modalities, optimizing energy delivery while preventing tissue damage by avoiding excessive pressure.
3Adaptability or versatility
If multiple energy modalities are delivered through a single instrument, then treatment versatility is improved, but the device complexity increases
Solution Approach 1:
The surgical instrument is designed with a multi-functional generator and control circuit that can deliver multiple energy modalities (electrosurgery, ultrasonic, bipolar, microwave, radiofrequency) through a single device. The control circuit includes functionality to generate and control different types of energy delivery, and the end effector is configured to support various treatment modes, making the instrument universal for different surgical applications.
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
Enhances tissue treatment efficacy by optimizing energy delivery and pressure adjustment, improving surgical outcomes.
Implementation Method 1
determining tissue impedance of tissue in contact with an end effector
Implementation Method 2
generating a first signal waveform based on the first energy modality; generating a second signal waveform based on the second energy modality; outputting the first and second signal waveform to deliver energy to the end effector
Data Source
AI summary
A surgical instrument, system and method for adjusting a compression force applied by a surgical instrument are disclosed. The method includes determining tissue impedance of tissue in contact with an end effector of the surgical instrument, determining a tissue type based on the tissue impedance, selecting a first energy modality to deliver to the surgical instrument, generating a first signal waveform based on the first energy modality, selecting a second energy modality to deliver to the surgical instrument, generating a second signal waveform based on the second energy modality, outputting the first and second signal waveform to deliver energy to the end effector, and adjusting a compression force applied by the end effector by changing a size of a gap between the tissue and the clamp arm based on a proportion of the first signal waveform to the second signal waveform.