Spring-Loaded Reciprocating Knife in Electrosurgical Forceps
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Solution Overview
Problem
Current open electrosurgical forceps require additional steps for tissue severing after sealing, which can be time-consuming and imprecise, especially when dealing with multiple vessels, due to the need for separate instruments for sealing and cutting.
Innovation Solution
An open electrosurgical forceps design incorporating a spring-loaded reciprocating tissue cutting mechanism that integrates mechanical clamping pressure and electrosurgical energy, allowing the same instrument to both seal and sever tissue along the sealing line, featuring a knife blade that deploys from a slot in the jaw member to cut the sealed tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate instruments are used for sealing and cutting tissue, then each instrument can be optimized for its specific function, but the surgical procedure becomes more time-consuming and less precise due to the need for additional steps and instrument changes
Solution Approach 1:
The patent combines sealing and cutting functions into a single forceps instrument. The sealing jaws apply electrosurgical energy to create a tissue seal, while an integrated knife blade can then sever the sealed tissue along the sealing line without requiring instrument removal or replacement. This merging of functions eliminates the time loss associated with changing instruments while maintaining the precision of both sealing and cutting operations.
Solution Approach 2:
The forceps instrument is designed with multi-functionality, serving both as a sealing device and a cutting device. The same instrument that creates the tissue seal through electrosurgical energy also incorporates a knife blade for severing the tissue. This universal design allows the surgeon to perform both sealing and cutting operations with one instrument, improving workflow efficiency and reducing procedural time.
2Reliability
If separate instruments are used for sealing and cutting, then instrument specialization is maintained, but the complexity of the surgical procedure increases due to multiple instruments and steps
Solution Approach 1:
By merging sealing and cutting capabilities into one forceps instrument, the patent reduces the number of separate devices and steps required during surgery. The integrated design allows the surgeon to seal and cut tissue in a continuous workflow without switching instruments, thereby simplifying the overall surgical procedure while maintaining the precision of both functions.
Solution Approach 2:
The multi-functional forceps instrument consolidates multiple surgical tasks into a single device. Instead of managing separate sealing and cutting instruments, the surgeon uses one universal tool that performs both functions, reducing procedural complexity and the cognitive load associated with coordinating multiple specialized instruments.
3Reliability
If additional steps are required for tissue severing after sealing, then sealing and cutting can be performed with optimized specialized tools, but the overall efficiency of the surgical procedure decreases
Solution Approach 1:
The patent merges sealing and cutting operations into a single integrated process using one forceps instrument. After sealing the tissue with electrosurgical energy, the knife blade is deployed to sever the tissue along the sealing line without requiring instrument removal. This combination eliminates the additional steps and time loss associated with using separate instruments, thereby improving surgical efficiency while maintaining high-quality sealing.
Solution Approach 2:
The forceps instrument enables continuous useful action by seamlessly transitioning from sealing to cutting within the same instrument platform. The surgeon applies electrosurgical energy to seal the tissue, then immediately deploys the knife blade to cut, maintaining an uninterrupted workflow. This continuity eliminates the breaks and instrument changes that would otherwise reduce surgical productivity.
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 tissue severing along the sealing line, reducing procedural time and improving accuracy by allowing the same instrument to both form and cut the tissue seal, thus streamlining surgical procedures.
Implementation Method 1
spring loaded reciprocating tissue cutting mechanism
Implementation Method 2
utilize both mechanical clamping action and electrical energy to affect hemostasis by heating tissue and blood vessels to coagulate and/or cauterize tissue
Implementation Method 3
Vessel sealing or tissue sealing is a recently-developed technology which utilizes a unique combination of radiofrequency energy, pressure and gap control to effectively seal or fuse tissue
Data Source
AI summary
Open electrosurgical forceps for sealing tissue which include a pair of first and second shaft portions each having a jaw member disposed at a distal end thereof. Each of the jaw members includes an electrically conductive sealing surface which communicates electrosurgical energy through tissue held therebetween with at least one of the jaw members including a knife slot defined along a length thereof. The knife slot is dimensioned to reciprocate a knife blade therefrom. The forceps also have a cutting mechanism which selectively actuates the knife blade from a first position wherein the knife blade is disposed at least substantially entirely within the knife slot of the jaw member to at least one subsequent position wherein the knife blade is at least partially deployed from the knife slot of the jaw member. The knife blade is displaceable in a direction transverse to a longitudinal axis of the forceps.