Adjustable Prone Bed Structure to Reduce Mucous Aspiration
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Solution Overview
Problem
Hospital-Acquired Pneumonia (HAP) is prevalent due to patients lying supine in hospital beds, causing nasal secretions to gravitate into the lungs, which existing medical approaches fail to adequately address.
Innovation Solution
A pulmonary prone bed that allows patients to sleep in a prone position, featuring an adjustable bed frame and a shallower head support pad with a facial hole, enabling mucous secretions to be expelled through the nose and reducing back strain through leg angle adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If patients lie supine in traditional hospital beds, then breathing is maintained, but nasal secretions gravitate into the lungs causing HAP
Solution Approach 1:
The patent inverts the traditional supine sleeping position to a prone position. By turning the patient face-down, gravity pulls secretions toward the mouth and nose instead of into the lungs, eliminating the harmful effect while maintaining breathing function through the facial hole in the head support pad.
2Object-affected harmful factors
If patients sleep in prone position on traditional beds, then mucous expulsion is improved, but neck stiffness and back pain occur
Solution Approach 1:
The bed frame incorporates adjustable components that allow dynamic modification of the prone position. The head support pad can be adjusted in depth and angle, and the bed frame can be tilted, enabling the position to adapt to patient comfort needs while maintaining the therapeutic prone orientation for mucous expulsion.
Solution Approach 2:
The patent modifies physical parameters of the bed system including head pad depth (2-3 inches shallower than body mattress), bed frame tilt angle, and leg elevation angle. These parameter adjustments optimize both the therapeutic effect of prone positioning and patient comfort by reducing strain on the neck and back.
3Device complexity
If head support pad is same depth as body mattress, then structural simplicity is maintained, but chin cannot reach over mattress end
Solution Approach 1:
The head support pad is designed with locally differentiated depth characteristics - it is 2-3 inches shallower than the body mattress portion. This local variation in depth allows the patient's chin to reach over the mattress end while the body remains properly supported, enabling effective prone positioning without requiring complex overall structural changes.
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 bed design reduces the frequency of HAP by preventing mucous aspiration and alleviating back pain, while also being suitable for other therapeutic contexts like orthopedic recovery.
Implementation Method 1
By allowing the patient to sleep in the prone position (i.e., face down), gravity may work in their favor to pull mucous secretions forward and out the nose where it can be expelled.
Data Source
AI summary
A pulmonary prone bed is described that reduces the frequency of Hospital-Acquired Pneumonia (HAP) by allowing a patient to rest/sleep in the prone position. In particular, a portion of a mattress and bed frame that supports the upper part of the body may adjust to the length of the torso of each individual patient and a midsection of the mattress and bed frame may adjust to the length of the thighs of each individual patient. This adjustment allows the chin of each patient to reach over the end of the mattress and the bed to fold downward at the patient's waist. By allowing the patient to rest in the prone position, gravity may work to pull mucous secretions forward and out the nose to be expelled. In this fashion, mucous secretions will be nowhere near the lungs such that the patient may not be susceptible to aspiration of mucous secretions.