Operating Table Positioning Sheets for Steep-Angle Patient Restraint
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Solution Overview
Problem
Existing devices fail to securely position and restrain patients on operating tables at steep angles greater than 30 degrees, such as in Trendelenburg and Lateral Oblique positions, leading to movement and instability during medical procedures.
Innovation Solution
A patient positioning system comprising a mattress pad base, positioning pad, lift sheet, head positioner, arm positioners, and body strap, which are designed to snugly envelop and secure the patient's body, arms, and head, using releasable fasteners and high-density polyurethane foam for stability and comfort, ensuring the patient remains positioned and restrained at steep angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operating table is angled at a steep angle greater than 30 degrees for Trendelenburg or Lateral Oblique positions, then the surgical procedure can be performed with better exposure and access, but the patient becomes difficult to securely restrain and may move or slip on the table
Solution Approach 1:
The positioning system is divided into multiple independent components: head positioners, arm positioners, body positioning sheets, and leg positioners. Each component independently addresses specific body regions, allowing the system to effectively restrain the patient in steep angle positions without requiring a single complex restraint mechanism.
2Ease of operation
If traditional positioning devices are used in steep angle positions, then the setup is simple, but the patient cannot be securely held in position and movement occurs during the procedure
Solution Approach 1:
The system combines multiple positioning functions into an integrated set of components that work together: head positioners secure the head, arm positioners restrain the arms, body positioning sheets hold the torso, and leg positioners secure the lower body. This combination achieves reliable patient restraint in steep angles while maintaining ease of operation through modular assembly.
3Reliability
If the patient is secured tightly to prevent movement, then patient stability is improved, but patient comfort and pressure distribution are compromised
Solution Approach 1:
Different components of the positioning system are designed with locally optimized properties: soft cushioning materials contact the patient's body surfaces to distribute pressure, while structured rigid elements provide the necessary restraint force. The head positioners use contoured foam, arm positioners use padded straps, and body sheets use breathable fabric with strategic support zones, ensuring both stability and comfort simultaneously.
Data Source
AI summary
A patient positioning system configured for positioning and supporting a patient against movement on an operating table, the positioning system including a pair of arm positioners each configured to be positionable about an arm of the patient when the patient is lying on the operating table, each of the arm positioners provided as a sheet material configured to be wrapped around one of the arms of the patient to position each of the arm positioners to snugly envelope one of the arms and having releasable fasteners to maintain the arm positioners in the wrapped configuration; and an elongate lift sheet configured to extend across the operating table and underneath the back of the patient, the lift sheet being positioned to have opposite ends thereof wrapped over and around the arm protectors and tucked back under the lower back or sacrum of the patient to securely and snugly hold the lift sheet around the arm protectors and restrain the arms of the patient.