US 11,231,395 B2 · Smart screw

Smart screw

AssigneesKyungpook National University Industry-Academic Cooperation Foundation, Daegu Gyeongbuk Institute of Science and Technology, Korea Advanced Institute of Science and Technology

InventorsShin Yoon Kim, Jun Young Kim, Anna Seo, Hee Sung Lee, Jae Youn Hwang, Sangyeon Youn, Jae Suk Choi, Min Kyu Je

Life of this patent

Estimating the term…

Abstract

A smart screw according to an embodiment may comprise: a screw main body which penetrates an artificial joint including a shell disposed on a hip joint of an object and a liner disposed on the inner surface of the shell and is then inserted into the hip joint; a transducer including a coupling layer that senses a sound wave signal reflected from the liner, a piezo-electric layer formed to determine a frequency of the sound wave signal, and a sound absorbing layer for absorbing the sound wave signal; and a processing module for generating a sound wave signal toward the liner and receiving the sound wave signal sensed by the coupling layer, measuring the thickness of the liner on the basis of the received sound wave signal, and transferring data about the measured thickness of the liner to the outside.

Claims16

Dependent claims

A smart screw comprising:

a main screw body configured to penetrate an artificial joint, the artificial joint including a shell configured to be disposed on a joint of an object and a liner disposed on an inner surface of the shell, and configured to be inserted into the joint;
a transducer including a matching layer configured to detect a sound wave signal reflected from the liner, a piezoelectric layer formed to have a preset frequency of the sound wave signal, and a backing layer configured to absorb the sound wave signal;
and
a processing module configured to generate the sound wave signal towards the liner, receive the sound wave signal detected by the matching layer, measure a thickness of the liner based on the received sound wave signal, and transfer data of the measured thickness of the liner to a location outside of the smart screw.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/467,829Filed 8 Dec 2017

Priority

KR KR10-2016-01679219 Dec 2016

Published

US 2021/0190730 A124 Jun 2021

Granted

25 Jan 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification23 codes

G01N 29/07
Analysing solids: by measuring propagation velocity or propagation time of acoustic waves
A61B 8/0875
Clinical applications: for diagnosis of bone
A61B 8/4272
Details of probe positioning or probe attachment to the patient: involving the acoustic interface between the transducer and the tissue
A61B 17/86
Fasteners therefor or fasteners being internal fixation devices: pins or screws or threaded wires; nuts therefor