Biomimetic Bone Microgrinding Head for Self-Transporting Cooling Droplets
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bone microgrinding devices face challenges in rapid cooling and effective transport of cooling medium droplets due to air flow barriers and hydrophilic modes that prevent quick condensation and nucleation, leading to elevated temperatures and potential thermal damage during surgery.
Innovation Solution
A biomimetic desert beetle self-transporting bone microgrinding head is designed with a hydrophobic matrix and hydrophilic abrasive particles, utilizing a combination of hydrophilicity and hydrophobicity to rapidly capture and transport cooling medium droplets to the grinding region, enhancing cooling efficiency and preventing tool blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed grinding is performed, then grinding efficiency is improved, but thermal damage increases due to heat generation
Solution Approach 1:
The patent utilizes phase transition of cooling medium (evaporation and condensation) to achieve heat exchange. The cooling medium evaporates at the evaporation section to absorb heat from the grinding region, then condenses at the condensation section to release heat externally, maintaining low temperature during high-speed grinding and preventing thermal damage while preserving grinding efficiency
Solution Approach 2:
The patent introduces a cooling medium as an intermediary substance to transfer heat away from the grinding region. The cooling medium circulates through the hollow shaft, absorbing heat generated during grinding and transporting it to the condensation section, thereby protecting the bone and nerve tissues from thermal damage while allowing continuous high-speed grinding
2Reliability
If air flow barrier layer is formed during high-speed rotation, then air flow protection is improved, but cooling medium transport is hindered
Solution Approach 1:
The patent extracts the air flow barrier layer from the grinding region by providing an outlet at the front end of the grinding head. This outlet allows the air flow barrier layer to be discharged externally, preventing it from blocking the cooling medium from reaching the grinding region while maintaining the protective function of the air flow barrier in other areas
Solution Approach 2:
The patent segments the grinding head structure into distinct functional sections: evaporation section, adiabatic section, and condensation section. The outlet is specifically positioned at the front end to separate air flow discharge from cooling medium delivery paths, allowing both functions to operate simultaneously without interference
3Ease of manufacture
If ordinary grinding head or single hydrophilic mode is used, then manufacturing simplicity is improved, but cooling efficiency is reduced due to slow condensation and nucleation
Solution Approach 1:
The patent applies different surface wettability properties to different sections of the grinding head. The evaporation section has hydrophobic surface treatment to promote droplet formation and evaporation, while the condensation section has hydrophilic surface treatment to enhance condensation and nucleation. This local differentiation of surface properties significantly improves cooling efficiency compared to uniform surfaces
4Quantity of substance
If droplets collide with hydrophilic surface, then droplet capture is improved, but droplet ejection occurs due to self-ejection effect
Solution Approach 1:
The patent uses hydrophobic surface treatment at the evaporation section to capture droplets through condensation while preventing their ejection. The hydrophobic surface allows droplets to nucleate and grow without spreading, and the controlled evaporation process ensures droplets are retained and utilized for cooling rather than being self-ejected
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 microgrinding head achieves rapid cooling and effective heat transfer by quickly transporting cooling medium droplets, reducing thermal damage and improving surgical outcomes by maintaining low temperatures and ensuring smooth operation.
Implementation Method 1
A biomimetic desert beetle self-transporting bone microgrinding head, which includes a hydrophobic matrix or a matrix having a hydrophobic plating layer, wherein hydrophilic abrasive particles are evenly distributed on the hydrophobic matrix or the hydrophobic plating layer
Implementation Method 2
hydrophilic abrasive particles are evenly distributed on the hydrophobic matrix or the hydrophobic plating layer
Implementation Method 3
By designing the microgrinding head, the microgrinding head utilizes a combination of hydrophilicity and hydrophobicity to achieve an effect of being capable of cooling rapidly and the like; and being capable of capturing cooling medium droplets and effectively transporting the droplets to a grinding arc region
Data Source
AI summary
A biomimetic desert beetle self-transporting bone microgrinding head and a preparation process thereof, and relates to the field of medical instruments. The microgrinding head includes a hydrophobic matrix or a matrix having a hydrophobic plating layer. The matrix has a hydrophobic surface on which several hydrophilic abrasive particles are uniformly distributed. A process for preparing the microgrinding head is: selecting diamond abrasive particles and conducting oxidization treatment of the diamond abrasive particles; forming a hydrophobic matrix by scanning a surface of the matrix with a laser; or alternatively obtaining a hydrophobic plating layer by a chemical modification method; and combining the oxidized diamond abrasive particles with the hydrophobic matrix or the hydrophobic plating layer by electroplating to obtain a microgrinding head. The microgrinding head utilizes to achieve an effect of being capable of cooling rapidly and capturing cooling medium droplets and effectively transporting the droplets to a grinding arc region.