Medical Display Hanger Pivot Structure for Collision Tilt Avoidance
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Solution Overview
Problem
In hybrid operating rooms, medical display hangers face the risk of accidental collisions with people and objects, leading to potential damage and instability, which existing protective devices fail to adequately address.
Innovation Solution
A horizontal protective device for medical display hangers is designed, comprising an upper ring, a middle ring, a lower ring, upper rotating shafts, and lower rotating shafts, which are spatially perpendicular to each other, allowing for tilt avoidance in any horizontal direction through a shaft-hole clearance fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a rigid protective structure is used for the medical display hanger, then collision protection is improved, but the device complexity and weight increase
Solution Approach 1:
The patent applies dynamics by replacing rigid protective structures with dynamic rotating shafts that can rotate freely in horizontal directions. The rotating shafts (4, 5) are connected to rings (1, 2, 3) and can rotate around vertical and horizontal axes, allowing the medical display hanger to dynamically adjust its position during collisions rather than resisting with rigid structures. This reduces device complexity while maintaining protection effectiveness.
Solution Approach 2:
The patent changes the parameter of rigidity to flexibility by using rotating shafts with clearance fits instead of rigid connections. The rotating shafts have diameters of 9.95±0.05mm fitting into holes with diameters of 10.15±0.05mm, creating a clearance fit that allows rotational movement. This parameter change enables the structure to absorb collision energy through rotation rather than rigid resistance, reducing overall device complexity.
2Reliability
If multiple rotating shafts are added to achieve tilt avoidance in any horizontal direction, then protection reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing rotating shafts that can rotate around multiple axes (vertical and horizontal). The upper rotating shaft (4) rotates around a vertical axis while the lower rotating shaft (5) rotates around a horizontal axis, and both can work together to provide tilt avoidance in any horizontal direction. This multi-functional design achieves comprehensive protection reliability without requiring separate protective mechanisms for each direction, thus avoiding excessive complexity.
Solution Approach 2:
The patent applies dimensionality change by introducing rotation around both vertical and horizontal axes. The upper rotating shaft provides rotation in one dimension while the lower rotating shaft provides rotation in another dimension, together creating three-dimensional tilt avoidance capability. This spatial arrangement allows the system to handle collisions from any horizontal direction using a coordinated system rather than multiple independent complex mechanisms.
3Ease of operation
If shaft-hole clearance fit is used to enable rotation, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies parameter changes by specifying precise dimensional parameters for the shaft-hole clearance fit. The rotating shafts have diameters of 9.95±0.05mm and the holes have diameters of 10.15±0.05mm, creating a controlled clearance of approximately 0.2mm. This parameter specification balances manufacturing precision requirements with operational smoothness, allowing free rotation while maintaining adequate clearance for operational ease.
Data Source
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AI summary
A horizontal protective device (10) for a medical display hanger comprises an upper ring (1), a middle ring (2), a lower ring (3), an upper rotating shaft (4) and a lower rotating shaft (5), wherein the upper ring (1) is connected to the bottom of a medical pendant (6), the lower ring (3) is connected to the top of the medical display hanger (7), and the middle ring (2) is provided with a total of four holes (8) in front, rear, left, and right portions thereof; one end of the upper rotating shaft (4) is fixedly connected to the upper ring (1), and the other end of the upper rotating shaft (4) passes through one of the holes (8) of the middle ring (2) to form a shaft-hole clearance fit; one end of the lower rotating shaft (5) is fixedly connected to the lower ring (3), and the other end of the lower rotating shaft (5) passes through a further one of the holes (8) of the middle ring (2) to form a shaft-hole clearance fit; and the upper rotating shaft (4) and the lower rotating shaft (5) are spatially perpendicular to each other. The medical display hanger (7) can be subjected to tilt avoidance in the event of an accidental collision in any horizontal direction.