• 융합신호처리학회논문지
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• 제25권2호
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• pp.67-76
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• 2024

과거부터 상지 절단 장애인을 위한 여러 종류의 보조기가 개발되어 왔으며, 이 중 근전전동의수는 사용자의 편의성 향상을 목적으로 단순 파지 가능 사용에서 물체의 크기와 형태에 따라 다양한 손동작을 변환하여 사용하는 연구가 요구되어 왔다. 본 연구에서는 사람 손 크기와 손가락 움직임을 모사하여 모터와 웜 기어의 구동 메커니즘을 적용한 5 손가락 근전전동의 수를 개발하였다. 이를 바탕으로 근전도 신호 입력을 통한 손가락의 독립적 제어를 위한 제어기를 개발하고, 대표 8가지 손동작 선정, 변환 조건 파라미터 선정을 통한 상태 전이 기반 손동작 변환 알고리즘을 제안하였다. 그리고 훈련과 사용성 평가 방법을 소개하고, 이를 바탕으로 손기능 전용 도구를 이용한 상지 절단 장애인 대상의 사용성 평가를 진행하여 알고리즘의 상용화 가능성을 확인하였으며, 반복적인 평가를 통한 사용자의 적응과 높은 수행 능력을 확인하였다.

• 대한견주관절학회:학술대회논문집
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• 대한견주관절학회 1999년도 학술대회
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• pp.97-98
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• 1999

• 대한견주관절학회:학술대회논문집
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• 대한견주관절학회 1999년도 학술대회
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• pp.20-21
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• 1999

• 대한치과의사협회지
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• 제33권2호통권309호
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• pp.98-110
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• 1995

• The Korean Journal of Pain
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• 제10권2호
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• pp.153-165
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• 1997

• 대한치과의사협회지
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• 제22권2호통권177호
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• pp.113-120
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• 1984

• Macromolecular Research
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• 제12권6호
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• pp.593-597
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• 2004

A new ionomeric polymer-metal composite (IPMC) was prepared using a cast membrane of acrylic copolymer, which was synthesized by radical copolymerization of fluoroalkyl acrylate and acrylic acid (AA). To examine its performance as a new electroactive polymer, the current and displacement responses to a step voltage applied across the IPMC were measured. The largest responses were observed when the AA content in the copolymer was $10.6\;wt\%$.

• 대한족부족관절학회지
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• 제15권3호
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• pp.124-131
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• 2011

Ankle arthrodesis has been considered to be the standard operative treatment for end-stage ankle arthritis, nevertheless currently increasing arthroplasty. Indication for arthrodesis is painful ankle from global arthrosis regardless of the etiology. But it is hard to be carried out in the several circumstance such as infection states, poor vascularity, severe diabetes, prematurity, etc. So thorough evaluation should be done before the surgery, including adjacent joints status. The ideal position for fusion is neutral in flexion, functional valgus, and slightly external rotation. Methods of arthrodesis would be largely divided into two categories as in situ fixation and realignment procedure. The lateral and anterior longitudinal approaches are two common procedures, and fixation modalities are also variable. The long-term results of arthrodesis have been reported. Even the close follow-up have shown subsequent degeneration of adjacent joints, benefits such as reliable pain loss, easy correctability for deformity, and improved functional status with considerable durability can be expected in the most patients.

• 한국세라믹학회지
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• 제55권2호
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• pp.95-107
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• 2018

This presentation will give an overview of Ca-aluminate based biomaterials and their proposed use within the field of nanostructured biomaterials. The paper describes typical features of Ca-aluminate materials with regard to technology, chemistry, biocompatibility including hemocompatibility and bioactivity, and developed microstructure. Special focus will be on the developed microstructure, which is in the nanosize range. Application possibilities within odontology, orthopedics, and drug delivery are presented. The nanostructure including pore size below 5 nm in these structures opens up this material for some use in specific dental-related applications in which antibacterial and bacteriostatic aspects are of importance, and as thin coating on implants within dental and orthopaedic applications. Nanosize porosity is essential in drug delivery systems for controlled release of medicaments. The priority field for Ca-aluminate biomaterials is implant materials, which use minimally-invasive techniques to offer in vivo, on-site developed biomaterials.

• Journal of Trauma and Injury
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• 제30권4호
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• pp.212-215
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• 2017

The choice of the most appropriate treatment for thoracolumbar or lumbar spine burst fracture remains controversial from conservative treatment to fusion through a posterior or anterior approach. There are many cases where ligamentotaxis is used to reduce the burst fracture. However, indirect reduction using ligamentotaxis is often limited in the magnitude of the reduction that it can achieve. In our patient with severe burst fracture, we were able to restore an almost normal level of vertebral height and secure spinal canal widening by using only ligamentotaxis by posterior instrumentation. Before the operation, the patient had more than 95% encroachment of the spinal canal. This was reduced to less than 10% after treatment.