Patient support apparatus having an integrated limb compression device

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Solution Overview

Problem

Existing patient support apparatuses, such as beds, face issues with the placement and operation of limb compression devices, which can lead to tripping hazards and inefficient use of space, as well as a lack of integration with other bed features, resulting in suboptimal compression therapy delivery.

Innovation Solution

A patient support apparatus with a frame, control circuitry, and a footboard that houses a compression module, allowing for integrated pneumatic and electrical communication, wireless power and data transfer, and adjustable therapy parameters based on patient position and bed configuration, enhancing the safety and effectiveness of limb compression therapy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the control box is hung on the footboard, then the compression device can be easily accessed, but the control box may slip off and create safety hazards

Engineering Contradiction:
Improveaccessibility of control boxVSAvoidstability of control box placement
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The control box is integrated into the footboard structure, merging two previously separate components. The control box is received within a dedicated space in the footboard and secured with fasteners, eliminating the need to hang it separately while maintaining accessibility.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The control box is nested within the footboard structure, fitting into a specifically designed space. This nesting arrangement allows the control box to be housed securely within the footboard while maintaining easy access for operation.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Use of energy by moving object

If long power cords are routed from the control box to power outlets, then power can be delivered to the device, but tripping hazards and obstructions are created

Engineering Contradiction:
Improvepower delivery to compression deviceVSAvoidtripping hazard from power cord
Core Design Contradiction:
Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The power cord routing is extracted from the problematic area near the foot of the bed. The electrical cable passes through the footboard structure internally, removing the visible power cord from the floor area where it would create tripping hazards.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The footboard acts as an intermediary structure that provides an internal pathway for the electrical cable. Instead of running the cord across the floor, the footboard mediates the power connection by housing the cable within its structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Area of stationary object

If the compression module is integrated into the footboard, then space is optimized and safety is improved, but the device complexity increases

Engineering Contradiction:
Improvespace utilization in patient roomVSAvoidintegration complexity of compression module
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The compression device is segmented into modular components: the compression module, control box, and electrical cable. This segmentation allows each component to be independently designed and then integrated into the footboard, managing complexity through modularity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The footboard is designed with multi-functionality, serving both as a structural support element and as an integrated housing for the compression device components. This universal design consolidates multiple functions into a single structure, optimizing space while managing complexity through unified design.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The solution provides a safer, more integrated, and adaptable limb compression therapy system by eliminating tripping hazards, optimizing space usage, and varying therapy parameters based on patient status and bed configuration, thereby improving patient care.

Implementation Method 1

The compression module is operable to inflate and deflate a compression sleeve worn on a limb of a patient

Methodology Applied
Scientific EffectPneumatic pressure: Pressure Gradient

Implementation Method 2

During operation of the compression module to inflate the compression sleeve, air may move from ambient surroundings into the first interior region of the footboard through the second opening and air may move into the second interior region in the housing of the compression module through the at least one first opening

Methodology Applied
Scientific EffectAir flow through openings: Pressure Gradient

Data Source

PatentUS10952920B2Patient support apparatus having an integrated limb compression device
Publication Date: 2021.03.23 HILL ROM SERVICES INC
  • US10952920B2 patent drawing
  • US10952920B2 patent drawing
  • US10952920B2 patent drawing

AI summary

A patient support apparatus includes a frame having a patient support deck. A footboard is removably coupled to the frame. A compression therapy module is located inside the footboard or is mounted to a foot section of the frame. A sleeve port is pneumatically coupled to the compression therapy module and is located on the foot section. The sleeve port is configured for attachment to at least one tube extending from a compression sleeve worn on a limb of a patient. Control circuitry is coupled to the frame and is operable to control functions of the patient support apparatus and to control the compression therapy module. A graphical display screen is coupled to the control circuitry and displays user inputs that are selected to control functions of the patient support apparatus and the compression therapy module.