Biomimetic desert beetle self-transporting bone microgrinding head and preparation process thereof

Patent metadata

Field	Value
Publication number	US-12544082-B2
Application number	US-202218569221-A
Country	US
Kind code	B2
Filing date	Dec 21, 2022
Priority date	Jun 21, 2022
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

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.

First claim

What is claimed is:

1 . A microgrinding tool configured to grind bone in a surgical procedure, comprising:
a shaft; and a partially-spherical microgrinding head at an end of the shaft, wherein the microgrinding head is configured to exhibit a biomimetic arrangement of an external surface structure of a desert beetle, the microgrinding head comprising: a hydrophobic matrix or a matrix having a hydrophobic plating layer, wherein hydrophilic abrasive particles are distributed at predetermined intervals on a surface of the hydrophobic matrix or on a surface of the hydrophobic plating layer, wherein the hydrophilic abrasive particles comprise oxidized diamond abrasive particles, wherein the hydrophilic abrasive particles are arranged on the surface of the hydrophobic matrix or the hydrophobic plating layer through electroplating, and wherein the hydrophilic abrasive particles are distributed at the predetermined intervals such that the microgrinding head exhibits the biomimetic arrangement of the desert beetle in order to collect nanofluid cooling liquid and reduce the temperature within a grinding region of the bone during the surgical procedure.

2 . A process for preparing the microgrinding tool according to claim 1 , comprising:
selecting diamond abrasive particles and conducting an oxidization treatment on the diamond abrasive particles to form the oxidized diamond abrasive particles; scanning a surface of another matrix by using a laser to form the hydrophobic matrix; or obtaining the hydrophobic plating layer on the surface of the another matrix by using a chemical modification method; and binding the oxidized diamond abrasive particles with the surface of the hydrophobic matrix or the surface of the hydrophobic plating layer by the electroplating to obtain the microgrinding head.

3 . The process according to claim 2 , wherein the step of forming the oxidized diamond abrasive particles comprises firstly selecting diamond abrasive particles with a same volume and structure, then putting the diamond abrasive particles which are selected into a tube furnace, and introducing pure nitrogen into the tube furnace; wherein a heating temperature of the tube furnace is greater than 600° C., and a high-temperature oxidation time of the tube furnace is 10-20 min.

4 . The process according to claim 2 , wherein the step of forming the hydrophobic matrix comprises cleaning the another matrix for a predetermined cleaning duration by placing the another matrix in an ultrasonic cleaner and then drying the another matrix which is cleaned at room temperature, scanning the surface of the another matrix after the drying by using the laser for a predetermined scanning duration, after the scanning, soaking the another matrix in a stearic acid absolute ethanol solution, then taking the another matrix out of the stearic acid absolute ethanol solution, and then drying at room temperature to obtain the hydrophobic matrix.

5 . The process according to claim 2 , wherein the step of forming the hydrophobic plating layer comprises firstly pretreating the another matrix; using the another matrix which is pretreated as a cathode and using a pure nickel plate as an anode putting the cathode and the anode into a plating solution, performing an electrodeposition treatment by using a water-bath heating to heat the plating solution then placing the another matrix after the electrodeposition treatment in an ethanol solution for a predetermined duration, and obtaining the hydrophobic plating layer after drying.

6 . A microgrinding tool configured to grind bone in a surgical procedure,
comprising: a shaft; and a partially-spherical microgrinding head at an end of the shaft, wherein the microgrinding head is configured to exhibit a biomimetic arrangement of an external surface structure of a desert beetle, the microgrinding head comprising: a matrix, wherein hydrophilic stripes and hydrophobic stripes are arranged alternately at predetermined intervals along a circumferential direction on a surface of the matrix, a plurality of grooves formed at predetermined intervals along the circumferential direction on the surface of the matrix, and diamond abrasive particles disposed in the plurality of grooves, wherein the plurality of grooves are filled with an adhesive to fix the diamond abrasive particles, wherein the hydrophilic stripes and hydrophobic stripes are arranged at the predetermined intervals such that the microgrinding head exhibits the biomimetic arrangement of the desert beetle in order to collect nanofluid cooling liquid and reduce the temperature within a grinding region of the bone during the surgical procedure.

7 . The microgrinding tool according to claim 6 , wherein a width of each of the plurality of the grooves is smaller than a width of each of the hydrophilic stripes and a width of each of the hydrophobic stripes.

8 . A process for preparing the microgrinding tool according to claim 7 , comprising:
pretreating the surface of the matrix; forming the hydrophilic stripes sequentially arranged on the surface of the matrix by a laser scanning treatment; placing the matrix which is laser-treated in a stearic acid absolute ethanol solution for a predetermined soaking duration, and then drying to turn the hydrophilic stripes into the hydrophobic stripes, obtaining the matrix having the hydrophobic stripes after the drying; re-scanning the surface of the matrix dried and having the hydrophobic stripes by the laser scanning treatment to remove a stearic acid absolute ethanol film on the surface of the matrix according to a predetermined pattern, so as to obtain the hydrophilic stripes and the hydrophobic stripes arranged alternately on the surface of the matrix; and notching the plurality of grooves on the surface of the matrix with intervals along the circumferential direction of the surface of the matrix, and disposing the diamond abrasive particles in the plurality of grooves.

9 . The process according to claim 8 , further comprising filling the plurality of grooves full of the adhesive, placing the diamond abrasive particles into the plurality of grooves, and bonding and fixing the diamond abrasive particles in the plurality of grooves by performing a heat treatment.

10 . A process for preparing the microgrinding tool according to claim 6 , comprising:
pretreating the surface of the matrix; forming the hydrophilic stripes sequentially arranged on the surface of the matrix by a laser scanning treatment; placing the matrix which is laser-treated in a stearic acid absolute ethanol solution for a predetermined soaking duration, and then drying to turn the hydrophilic stripes into the hydrophobic stripes, obtaining the matrix having the hydrophobic stripes after the drying; re-scanning the surface of the matrix dried and having the hydrophobic stripes by the laser scanning treatment to remove a stearic acid absolute ethanol film on the surface of the matrix according to a predetermined pattern, so as to obtain the hydrophilic stripes and the hydrophobic stripes arranged alternately on the surface of the matrix; and notching the plurality of grooves on the surface of the matrix with intervals along the circumferential direction of the surface of the matrix, and disposing the diamond abrasive particles in the plurality of grooves.

11 . The process according to claim 10 , further comprising filling the plurality of grooves full of an adhesive, placing the diamond abrasive particles into the plurality of grooves, and bonding and fixing the diamond abrasive particles in the plurality of the grooves by performing a heat treatment.

Assignees

• Univ Qingdao Technology

Inventors

• Yang Min
• Kong Ming
• Yang Yuying
• Li Changhe
• Zhou Zongming
• Zhang Naiqing
• Li Runze

Classifications

• C25D15/00 Primary

  Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires · CPC title

• C25D5/50

  by heat-treatment · CPC title

• C25D5/36

  of iron or steel · CPC title

• C25D3/12

  of nickel or cobalt · CPC title

• A61B2017/1651

  for cooling · CPC title