Rotating Inner Sleeve Assembly for Wider Endoscope Viewing Angles

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Solution Overview

Problem

Conventional endoscopic equipment faces issues with limited inner space leading to tool interference and restricted viewing angles, causing potential blind spots and increased surgical risks.

Innovation Solution

A sleeve assembly comprising an outer and inner sleeve, where the inner sleeve is detachably mounted on the outer sleeve and rotates relative to its central axis, allowing the lens assembly to move freely and adjust viewing angles without occupying excessive space, and a flushing mechanism to clean the lens.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the lens assembly is disposed inside the outer sleeve, then the viewing angle is restricted and blind spots are formed, but the structure remains simple

Engineering Contradiction:
Improveviewing angleVSAvoidsleeve structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The inner sleeve is nested within the outer sleeve, with the annular component positioned inside the outer sleeve's internal space. This nested configuration allows the lens assembly to be supported by the annular component while remaining within the outer sleeve, thereby expanding the viewing angle without significantly increasing overall structural complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Adaptability or versatility

If surgical tools and endoscopes are inserted into the same sleeve, then tool functionality is maintained, but interference between tools and endoscopes occurs

Engineering Contradiction:
Improvetool functionalityVSAvoidtool interference
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The sleeve is segmented into an outer sleeve and an inner sleeve with distinct functional zones. The annular component within the inner sleeve creates a dedicated support structure for the lens assembly, separating its function from surgical tools. This segmentation allows surgical tools to operate in the outer sleeve space while the endoscope is supported by the annular component, reducing interference between different instruments.

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If the inner sleeve closely attaches to the outer sleeve inner wall, then space utilization is optimized, but the lens assembly has limited movement freedom

Engineering Contradiction:
Improveinternal space utilizationVSAvoidlens movement freedom
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The inner sleeve is designed to rotate relative to the outer sleeve around the central axis, creating a dynamic configuration. The annular component rotates with the inner sleeve, allowing the lens assembly to change its viewing angle dynamically. This rotational capability provides movement freedom while maintaining close attachment to the outer sleeve inner wall, optimizing space utilization.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12569121B2Sleeve assembly and endoscope device
Publication Date: 2026.03.10 POINT ROBOTICS MEDTECH INC
  • US12569121B2 patent drawing
  • US12569121B2 patent drawing
  • US12569121B2 patent drawing

AI summary

A sleeve assembly and an endoscope device are provided. The endoscope device includes the sleeve assembly and a lens assembly. The sleeve assembly includes an outer sleeve and an inner sleeve. The outer sleeve has a first opening and a second opening that communicate with each other. The outer sleeve is configured to define a central axis, and the central axis passes through the first opening and the second opening. The inner sleeve is detachably disposed on the outer sleeve. The inner sleeve includes an annular component. The annular component is disposed outside the outer sleeve and surrounds the outer sleeve. The inner sleeve is disposed inside the outer sleeve and closely attached to an inner wall of the outer sleeve. The inner sleeve is configured to be operated to rotate relative to the central axis. The lens assembly is disposed in the inner sleeve.