Enhanced Surgical Instrument End Effector for Efficient Tissue Sealing

Publication ID: 24-11857247_0006_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Surgical Instrument End Effector for Efficient Tissue Sealing,” Published Technical Disclosure No. 24-11857247_0006_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857247_0006_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,247.

Summary of the Inventive Concept

An improved surgical instrument end effector with novel electrode geometry, dynamically adjustable gap distance, and real-time monitoring capabilities for enhanced tissue coagulation and sealing.

Background and Problem Solved

The original patent describes a surgical instrument end effector with a tissue cutting element and RF energy transmission mechanism. However, the existing design has limitations in terms of tissue grasping, RF energy delivery, and gap distance control. The new inventive concept addresses these limitations by introducing an integrated RF energy transmission mechanism, dynamically adjustable gap distance, and real-time monitoring capabilities to optimize tissue coagulation and sealing.

Detailed Description of the Inventive Concept

The enhanced surgical instrument end effector comprises a jaw with an integrated RF energy transmission mechanism, featuring a novel electrode geometry that optimizes tissue grasping and RF energy delivery. The end effector also includes a dynamically adjustable gap distance between opposing jaw members, controlled by a mechanical or electrical actuation mechanism. This allows for real-time adjustment of the gap distance to accommodate varying tissue types and desired coagulation effects. Furthermore, the end effector is equipped with integrated sensors for measuring tissue impedance, temperature, or other parameters, providing real-time feedback to the surgeon for optimizing the sealing process. The inventive concept also encompasses a method for enhancing tissue coagulation during electrosurgical procedures, applying a modulated RF energy signal to the tissue through the novel electrode configuration.

Novelty and Inventive Step

The new inventive concept introduces a novel electrode geometry, dynamically adjustable gap distance, and real-time monitoring capabilities, which are not present in the original patent. These features provide a significant improvement in tissue coagulation and sealing, making the new inventive concept novel and non-obvious.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include varying electrode geometries, different actuation mechanisms for the gap distance, and various sensor configurations for real-time monitoring. Additionally, the inventive concept could be adapted for use in other surgical procedures, such as laparoscopic or endoscopic surgeries.

Potential Commercial Applications and Market

The enhanced surgical instrument end effector has significant commercial potential in the medical device industry, particularly in the electrosurgical and tissue sealing markets. The inventive concept's ability to optimize tissue coagulation and sealing, reduce procedure time, and improve patient outcomes makes it an attractive solution for surgeons and hospitals.

CPC Classifications

SectionClassGroup
A A61 A61B18/1445
A A61 A61B2017/00389
A A61 A61B2017/00734
A A61 A61B2017/2925
A A61 A61B2018/0063
A A61 A61B2018/00083
A A61 A61B2018/00601
A A61 A61B2018/126
A A61 A61B2018/1455
A A61 A61B2018/1467

Field of Art

Electrosurgical instrumentation, specifically surgical end effectors for tissue sealing and RF energy transmission in minimally invasive surgical procedures. Requires expertise in medical device design, electrical engineering, and surgical instrument mechanics

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer with advanced degree, 3-5 years experience in surgical instrument design, familiar with RF energy transmission, tissue interaction principles, and electrosurgical device development

Obviousness Rationale

A PHOSITA would recognize that the PTD's disclosed variations represent predictable engineering improvements to the source patent's fundamental surgical instrument end effector design. The proposed modifications of dynamic gap control, integrated sensing, and modulated RF energy transmission are logical extensions of existing electrosurgical instrument technologies. These variations represent standard design optimization strategies well within the capabilities of an ordinary skilled practitioner in the field.

Obvious Combinations & Variations

Source Patent Element
Jaw members with electrode surfaces for RF energy transmission
PTD Variation
Dynamic gap distance control mechanism between jaw members
Obviousness Reasoning
Adjustable mechanical interfaces are a known technique in surgical instrumentation, allowing precise tissue engagement. A PHOSITA would find it obvious to implement variable gap control to optimize tissue sealing parameters
Source Patent Element
Tissue grasping features on jaw members
PTD Variation
Integrated sensors for measuring tissue impedance and temperature
Obviousness Reasoning
Real-time monitoring of tissue characteristics during electrosurgical procedures is a predictable enhancement, using standard sensor integration techniques known in medical device design
Source Patent Element
RF energy transmission through electrode surfaces
PTD Variation
Modulated RF energy signal with frequency optimization for specific tissue types
Obviousness Reasoning
Signal modulation and adaptive energy delivery represent standard engineering approaches for improving surgical instrument performance, based on well-understood principles of tissue interaction
Source Patent Element
Fixed electrode geometry on jaw members
PTD Variation
Retractable RF electrode that can be concealed within jaw body
Obviousness Reasoning
Protective and deployable electrode mechanisms are known design solutions for preventing instrument damage and improving surgical safety, representing a predictable design variation
Source Patent Element
Basic end effector jaw configuration for tissue sealing
PTD Variation
Novel electrode geometry optimized for enhanced energy transmission
Obviousness Reasoning
Geometric optimization of electrode surfaces is a routine engineering approach for improving energy transfer efficiency, well within a PHOSITA's problem-solving capabilities
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857247 and the disclosed technical variations, a person having ordinary skill in the art would find the claimed surgical instrument end effector modifications to be obvious and lacking inventive step. The proposed enhancements represent predictable engineering solutions that would be apparent to a skilled practitioner, thereby rendering potential patent claims obvious under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,247
TitleJaw for surgical instrument end effector
Assignee(s)Cilag GmbH International