Enhanced Self-Service Anastomosis Clamp for Digestive Tract with Improved Materials and Deployment Mechanisms

Publication ID: 24-11857192_0001_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Self-Service Anastomosis Clamp for Digestive Tract with Improved Materials and Deployment Mechanisms,” Published Technical Disclosure No. 24-11857192_0001_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857192_0001_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. 11,857,192.

Summary of the Inventive Concept

The inventive concept presents an enhanced self-service anastomosis clamp for digestive tract, featuring bio-absorbable outer rings, a flexible outer pipe delivery system, a ratchet mechanism handle, lubricated pulling cables, and serrated inner lancets. These advancements improve tissue grip, reduce tissue inflammation, and enhance deployment precision.

Background and Problem Solved

The original self-service anastomosis clamp for digestive tract, as described in the original patent, had limitations in terms of tissue inflammation, deployment smoothness, and tissue grip. The present inventive concept addresses these limitations by introducing novel materials and mechanisms to enhance the overall performance and safety of the anastomosis clamp.

Detailed Description of the Inventive Concept

The enhanced self-service anastomosis clamp features outer rings made of a bio-absorbable material, reducing tissue inflammation and improving healing. The delivery system is equipped with a flexible outer pipe, allowing for navigation through narrow passages and reducing the risk of tissue damage. The handle is designed with a core bar and slider, incorporating a ratchet mechanism to provide controlled and precise deployment of the clamp. Additionally, the pulling cable is coated with a lubricating material to reduce friction and improve deployment smoothness. The inner lancets are designed with a serrated edge to improve tissue grip and reduce the risk of tissue slippage.

Novelty and Inventive Step

The use of bio-absorbable outer rings, flexible outer pipe delivery system, ratchet mechanism handle, lubricated pulling cables, and serrated inner lancets constitutes a novel and non-obvious improvement over the original patent. These advancements provide a significant enhancement in the performance, safety, and usability of the anastomosis clamp.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include varying the material composition of the outer rings, modifying the design of the flexible outer pipe, or incorporating additional mechanisms to further enhance deployment precision. Variations could also include adapting the anastomosis clamp for use in different medical procedures or applications.

Potential Commercial Applications and Market

The enhanced self-service anastomosis clamp has significant commercial potential in the medical device industry, particularly in the fields of minimally invasive surgery and gastrointestinal procedures. The target market includes hospitals, clinics, and medical research institutions, with potential for widespread adoption and revenue growth.

CPC Classifications

SectionClassGroup
A A61 A61B17/1114
A A61 A61B17/00234
A A61 A61B17/122
A A61 A61B17/11
A A61 A61B17/15
A A61 A61B2017/00269
A A61 A61B2017/00336
A A61 A61B2017/00862
A A61 A61B2017/00902
A A61 A61B2017/111
A A61 A61B2017/1107
A A61 A61B2017/1132

Field of Art

Medical device engineering, specifically minimally invasive surgical technologies for gastrointestinal tract interventions, focusing on anastomosis clamp design and deployment systems

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or medical device designer with expertise in surgical instrumentation, advanced materials, mechanical design, and minimally invasive surgical techniques, holding at least a master's degree with 3-5 years of specialized experience

Obviousness Rationale

A PHOSITA would recognize that the disclosed variations represent predictable engineering improvements to the existing anastomosis clamp technology, utilizing known materials, mechanical design principles, and surgical device optimization strategies that would be readily apparent to a skilled practitioner in the field of medical device design.

Obvious Combinations & Variations

Source Patent Element
Anastomosis clamp with rigid outer rings and standard deployment mechanism
PTD Variation
Bio-absorbable outer rings to reduce tissue inflammation
Obviousness Reasoning
Material selection for biocompatibility is a standard design optimization technique, and using bio-absorbable materials in surgical devices is a well-known approach for minimizing long-term tissue response
Source Patent Element
Existing cable-based deployment system with fixed sheath
PTD Variation
Flexible outer pipe delivery system for improved navigation
Obviousness Reasoning
Enhancing device maneuverability through flexible design is a predictable engineering solution for improving minimally invasive surgical instrument performance
Source Patent Element
Basic handle mechanism for clamp deployment
PTD Variation
Ratchet mechanism handle with core bar and slider for controlled deployment
Obviousness Reasoning
Precision control mechanisms are standard design improvements in surgical instrumentation, representing a known technique for enhancing device functionality
Source Patent Element
Standard pulling cable configuration
PTD Variation
Lubricated pulling cables to reduce friction
Obviousness Reasoning
Surface modification and lubrication of mechanical components are well-established techniques for improving device performance and reducing mechanical resistance
Source Patent Element
Smooth inner lancet design
PTD Variation
Serrated inner lancet edges to improve tissue grip
Obviousness Reasoning
Modifying surface geometry to enhance functional performance is a routine design optimization strategy in medical device engineering
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857192 and the technical variations disclosed herein, a person having ordinary skill in the art would find the claimed improvements to the anastomosis clamp delivery system obvious and predictable, as the modifications represent standard engineering approaches to enhancing medical device performance through material selection, mechanical design optimization, and functional surface modifications.

Original Patent Information

Patent NumberUS 11,857,192
TitleSelf-service anastomosis clamp for digestive tract and delivery system thereof
Assignee(s)MICRO-TECH (NANJING) CO., LTD.