Medical Headlamp Battery Mounting for Comfort and Stability
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Solution Overview
Problem
Existing medical headlamp assemblies cause discomfort due to battery placement against the head, suffer from electrical power wastage, and have difficulties in diagnosing assembly failures, and exhibit light sway during head movement.
Innovation Solution
A medical headlamp assembly design with battery holders positioned away from the headstrap interior surface, using magnetic contacts and a flexible circuit to reduce pressure, and incorporating a detachable headlamp subassembly for easy maintenance and motion-controlled brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If batteries are mounted on the headband interior surface, then the headlamp assembly is compact and stable, but it creates pressure spots and discomfort on the user's head
Solution Approach 1:
The batteries are extracted from the headband interior surface and relocated to the exterior surface, away from the user's head. This separation removes the harmful pressure contact while preserving the compact assembly through alternative mounting positions on the headband structure.
2Ease of operation
If a circuit card with DC-to-DC convertor is placed in the headband, then brightness adjustment is enabled, but it creates additional pressure spots and discomfort
Solution Approach 1:
The circuit card hosting the DC-to-DC convertor is extracted from the headband interior and relocated to the exterior surface. This allows brightness adjustment functionality to be maintained while eliminating the additional pressure spot that would occur on the user's head.
3Stability of the object's composition
If electronics are buried in the headband, then the assembly is compact, but it makes diagnosing failures difficult
Solution Approach 1:
The headlamp assembly is segmented into distinct functional modules: the headlamp unit (bezel) and the headband unit (containing batteries and electronics). This modular segmentation allows failures to be isolated to specific modules, making diagnosis straightforward by determining which module is defective.
Solution Approach 2:
A detachable connector serves as an intermediary interface between the headlamp unit and headband unit. This physical separation point acts as a diagnostic mediator, allowing technicians to isolate and test each module independently to identify failure locations.
4Strength
If the headlamp linkage is rigidly fixed to the headband, then the structure is stable, but it causes light sway when the wearer moves their head
Solution Approach 1:
The linkage connecting the headlamp to the headband is designed with dynamic characteristics that allow it to absorb and dampen movements. This dynamic design enables the linkage to remain structurally strong while reducing the transmission of head movements to the light spot, minimizing sway during wear.
Data Source
AI summary
A medical headlamp assembly, including a headlamp subassembly and a headstrap subassembly, that has a headstrap having an interior surface that touches the user's head when the headstrap is being worn. Battery holders are supported by the headstrap away from the headstrap interior surface, so that batteries held by the battery holders have no interior surface that is closer than 2 mm away from the headstrap interior surface, and thereby, away from the user's head. Also, battery contacts are positioned to be contacted by batteries held in the battery holders. Finally, an electrical network is electrically connected to the battery contacts and a headlamp subassembly connector, physically connected to the headlamp subassembly and electrically connects the headlamp subassembly to the electrical network.