Nested Detector Lifting Module for Stable C-Arm Clearance

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Solution Overview

Problem

Existing lifting modules in angiography machines occupy excessive space and pose safety hazards due to their design, affecting the stability and safety of the C-arm movement.

Innovation Solution

A radiation detection device with a lifting module comprising a first and second lifting unit, where the first lifting unit includes a first lifting component movably connected to a base along the Z-axis, and a driving component drives a second lifting component to move along the Z-axis, allowing for adjustable size reduction while maintaining the detector's lifting range.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single-stage lifting module with ball screws, rack, and pinion is used, then the lifting function is achieved, but the module takes up excessive space in the lifting direction and exposes guiding structures that affect C-arm movement and pose safety hazards

Engineering Contradiction:
Improvesafety of C-arm movementVSAvoidspace occupied by lifting module in lifting direction
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent employs a nested structure where the first lifting component is disposed inside the second lifting component, and the driving component is disposed inside the first lifting component. This nested arrangement allows multiple lifting mechanisms to be compactly integrated, significantly reducing the overall space occupied by the lifting module in the lifting direction while maintaining the necessary lifting functionality and ensuring safe C-arm movement by enclosing guiding structures.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent transitions from a conventional single-dimensional linear arrangement of lifting components to a multi-dimensional nested configuration. By arranging components in concentric layers along the radial dimension while maintaining axial lifting motion, the design achieves compactness in the lifting direction without compromising the lifting range or functional performance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Length of stationary object

If a two-stage lifting module with multiple lead screws nested is used, then the space occupation is reduced, but the relative motion along a straight line between each level during lifting movement is uncertain, affecting stability

Engineering Contradiction:
Improvespace occupied by lifting module in lifting directionVSAvoidstability of lifting movement
Core Design Contradiction:
Length of stationary objectVSStability of the object's composition

Solution Approach 1:

The patent implements a synchronized driving mechanism where the driving component simultaneously controls both the first and second lifting components. This dynamic coordination ensures that both lifting levels move in a coordinated manner along straight lines during lifting operations, maintaining relative motion stability and eliminating the uncertainty associated with independent nested lead screws.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent incorporates a control system that monitors and coordinates the motion of multiple lifting components. Through feedback control, the system ensures that each lifting component moves along its designated straight-line path with precise positioning, maintaining overall lifting stability while achieving compact space utilization.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the single-stage lifting module is installed on one end of the C-arm to meet total arc length requirement, then the arc length at the other end must be adaptively extended, causing protrusion that impacts C-arm movement and creates safety hazards

Engineering Contradiction:
Improvearc length requirement of C-armVSAvoidsafety hazards from C-arm protrusion
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The compact nested structure of the lifting module allows it to be installed on one end of the C-arm without requiring extension of the C-arm arc at the other end. The space-saving nested design provides sufficient lifting range within the available arc length, eliminating the need for protruding extensions and the associated safety hazards.

Inventive Principle:
Principle #7Nested doll (Nesting)

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

Reduces the overall space occupied by the detector and lifting module, enhances stability, and ensures the C-arm's safety by preventing protrusion, thus minimizing collision risks and improving aesthetic appeal.

Implementation Method 1

at least one segment of the first lifting component is configured as a first lead screw, and the reference component is threaded to the first lead screw

Methodology Applied
Scientific EffectLead screw mechanism: Screw

Implementation Method 2

at least one segment of the driving component is configured as a second lead screw, and the second lifting component is threaded to the second lead screw

Methodology Applied
Scientific EffectLead screw mechanism: Screw

Data Source

PatentUS20260041387A1Radiation Detection Device and Medical Imaging Equipment
Publication Date: 2026.02.12 SHANGHAI UNITED IMAGING HEALTHCARE
  • US20260041387A1 patent drawing
  • US20260041387A1 patent drawing
  • US20260041387A1 patent drawing

AI summary

A radiation detection device and medical imaging equipment. The radiation detection device includes a lifting module. The lifting module includes a base, a first lifting unit, and a second lifting unit. The first lifting unit includes a first lifting component extending along a Z-axis, which is movably connected to the base along the Z-axis. The second lifting unit includes a driving component extending along the Z-axis and a second lifting component connected to the driving component, which is configured to drive the second lifting component to move along the Z-axis. The direction of the Z-axis is perpendicular to the connection surface of the base, wherein the connection surface of the base is the surface of the base connected to the first lifting component and the driving component.