Cordless RF Cauterization Device with Integrated Power Supply
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Solution Overview
Problem
Current electrosurgical forceps for sealing and cutting tissue face challenges in effectively sealing larger vessels due to difficulties in controlling mechanical parameters like pressure and gap distance between electrodes, leading to inconsistent and unreliable seals, and require large tabletop power supplies and cumbersome signal lines, limiting surgical efficiency and freedom.
Innovation Solution
A cordless, bipolar cauterization and cutting device with a self-powered, hand-held design that miniaturizes power supply and control circuitry, featuring a passively articulating end effector and automatic actuation for reduced steps and physical force required, allowing for precise tissue compression and sealing within an optimal tissue compression range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional electrosurgical forceps are used with tabletop power supplies and signal lines, then reliable vessel sealing can be achieved, but surgical efficiency is limited and freedom of movement is restricted
Solution Approach 1:
The patent extracts the power supply and control circuitry from the external tabletop system and incorporates them directly into the surgical instrument handle. This integration eliminates the need for cumbersome signal lines and external power connections, thereby improving surgical efficiency and freedom of movement while maintaining reliable vessel sealing capability
Solution Approach 2:
The patent merges the power supply, control circuitry, and surgical instrument into a single integrated handheld device. This combination allows the instrument to function autonomously without external connections, resolving the contradiction between reliability and surgical efficiency by making the system both self-contained and operationally efficient
2Reliability
If mechanical pressure and gap distance are manually controlled during vessel sealing, then the sealing process can be performed, but inconsistent and unreliable seals occur for larger vessels
Solution Approach 1:
The patent incorporates sensors that detect tissue compression force and jaw gap distance, providing real-time feedback to the control circuitry. The system automatically adjusts electrosurgical energy delivery based on this feedback, ensuring consistent and reliable vessel sealing without requiring manual control of mechanical parameters by the surgeon
Solution Approach 2:
The patent implements an automated control system that self-regulates the sealing process by monitoring mechanical parameters and adjusting energy delivery accordingly. This self-service mechanism eliminates the need for manual intervention in controlling pressure and gap distance, thereby improving sealing reliability while simplifying operation
3Adaptability or versatility
If standard electrosurgical instruments are used for larger vessels, then cutting function is available, but conversion to open surgical procedure is required for effective sealing
Solution Approach 1:
The patent designs a multi-functional instrument that can effectively seal vessels of varying sizes, from small to large diameter, within a single device. The instrument incorporates adjustable jaw dimensions and adaptable electrosurgical energy delivery modes, eliminating the need to convert to open surgical procedure for larger vessels while maintaining appropriate sealing capability across different vessel sizes
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 enables reliable and efficient sealing and cutting of tissue with reduced physical effort and steps, eliminating the need for large power supplies and signal lines, enhancing surgical precision and ease of use by maintaining optimal tissue compression and reducing the risk of tissue necrosis.
Implementation Method 1
electrosurgical forceps utilize both mechanical clamping action and electrical energy to effect hemostasis by heating the tissue and blood vessels to coagulate, cauterize and/or seal tissue
Implementation Method 2
heating the tissue and blood vessels to coagulate, cauterize and/or seal tissue
Data Source
AI summary
A cordless surgical device includes a modular battery, a radio-frequency signal generating assembly, a surgical handle and an interchangeable circuit casing. The RF signal generating assembly includes RF-signal-generating circuitry, a voltage-control circuit and an external output. The voltage circuit is configured to control an output of the RF-signal-generating circuitry. The handle is configured to support a bipolar end effector having jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle includes leads operable to receive RF signals from the external output and defines an aseptically sealable battery-holding compartment configured to hold the battery. The circuit casing is configured to house the RF signal generating assembly and includes a securing connection adapted to couple the external output of the RF signal generating assembly to the leads. The external output is operable to impart RF signals to the handle when the circuit casing connects to the handle.