Point-Contact Bracket Structure for Thrombelastography Friction Reduction
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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 can rotate relative to each other, reducing frictional force by minimizing contact points to a single point, 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 connect the support parts, then the structural stability is improved, but the rotational resistance increases
Solution Approach 1:
The connection part is divided into a first fixing connection member and a second fixing connection member, which are connected in point contact fashion. This segmentation allows the structure to maintain stability through the connection mechanism while minimizing the contact area to a single point, thereby reducing rotational resistance.
Solution Approach 2:
The connection transitions from surface contact (2D) to point contact (0D), effectively reducing the dimensionality of the contact interface. This dimensional change minimizes the frictional force while maintaining the necessary structural support and stability.
2Force
If a point contact mechanism is used to reduce frictional force, then the rotational resistance is reduced, but the measurement precision may be affected
Solution Approach 1:
The connection is segmented into dedicated fixing connection members with precise point contact geometry, ensuring consistent and repeatable contact points. This precision in the connection mechanism maintains measurement accuracy while minimizing friction.
Solution Approach 2:
The contact parameters are optimized by transitioning from surface contact to point contact, changing the physical state of the interface. This parameter change reduces frictional force while the precision-engineered contact geometry maintains measurement precision through consistent mechanical coupling.
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 blood coagulation measurements by minimizing frictional forces, thereby improving the overall performance of thrombelastography devices.
Implementation Method 1
only one contact point generates a frictional force to impede the rotation of the movable support part
Data Source
AI summary
A bracket, a thrombelastography device, and a support system are disclosed. The device 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.