Point-Contact Bracket for Low-Resistance Thrombelastography Rotation
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Solution Overview
Problem
Thrombelastography devices face high rotational resistance due to multiple contact points or surfaces, which hampers the accuracy and sensitivity of blood coagulation measurements.
Innovation Solution
A bracket system with a fixed and movable support part connected via a point contact mechanism, utilizing a first and second fixing connection member that rotate relative to each other, reducing frictional force by minimizing contact points, and optionally incorporating jewel bearings or magnets to further reduce resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple contact points or surfaces are used to support the rotational shaft, then the structural stability is improved, but the rotational resistance increases
Solution Approach 1:
The support structure is divided into multiple independent support parts, each providing localized stability. The bracket comprises a fixed support part and a movable support part that work independently yet cooperatively to maintain structural stability while minimizing overall contact points.
Solution Approach 2:
The patent transitions from surface contact to point contact by changing the dimensional nature of the contact interface. The connection part implements point contact between the fixed and movable support parts, reducing friction from two-dimensional surface interaction to zero-dimensional point interaction, thereby minimizing rotational resistance.
2Strength
If multiple contact points are used to support the rotational shaft, then the mechanical strength is improved, but the frictional force increases
Solution Approach 1:
The bracket is segmented into distinct functional parts: a fixed support part for structural anchoring, a movable support part for accommodating rotation, and a connection part for linking them. This segmentation allows each part to be optimized for its specific function, maintaining strength while minimizing friction.
Solution Approach 2:
The connection part employs point contact geometry that concentrates load at a specific point rather than distributing it across a surface. This point contact configuration, potentially using spherical or conical elements, reduces the contact area to minimize frictional force while maintaining sufficient mechanical strength through proper material selection and geometric design.
3Force
If a point contact mechanism is used, then the rotational resistance is reduced, but the manufacturing precision requirement increases
Solution Approach 1:
The separation of functions into distinct segments (fixed support, movable support, connection) allows manufacturing precision to be focused specifically on the connection part's point contact interface, while the support parts can be manufactured with standard tolerances. This modular approach concentrates precision requirements rather than distributing them throughout the entire structure.
Solution Approach 2:
The connection part acts as an intermediary element between the fixed and movable support parts. By designing this intermediary with specific point contact geometry (such as spherical joints or conical contacts), the system achieves low friction while the intermediary component itself absorbs the manufacturing precision requirements, protecting the overall system from accumulating tolerances.
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 significantly reduces rotational resistance, enhancing the sensitivity and accuracy of thrombelastography measurements by minimizing frictional forces, allowing for more precise blood coagulation analysis.
Implementation Method 1
the first fixing connection member and the second fixing connection member are connected together in point contact fashion, such that the first fixing connection member and the second fixing connection member can rotate relative to each other
Data Source
AI summary
A bracket a thrombelastography device, and a support system are disclosed. The bracket comprises: a fixed support part (101), a movable support part (102), and a connection part (103). The connection part comprises a first fixing connection member (1031) and a second fixing connection member (1032). The first fixing connection member is fixedly connected to the fixed support part; the second fixing connection member is fixedly connected to the movable support part; the first fixing connection member is connected to the second fixing connection member in point contact fashion, such that the first fixing connection member and the second fixing connection member can rotate relative to each other; the movable support part is fixedly connected to a supported object; when driven by the supported object, the movable support part rotates relative to the fixed support part by means of the point contact between the first fixing connection member and the second fixing connection member. The thrombelastography device comprises a rotational shaft and a bracket. The rotational resistance to the supported object when it rotates can be reduced.