• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.203-204
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• 2006

Studies on some biodegradable polymers and other materials such as hydrogels have shown the promising potential for a variety of surgical applications. Postoperative adhesion caused by the natural consequence of surgical wound healing results in problems of the repeated surgery. Recently, scientists have developed absorbable anti-adhesion barriers that can protect a tissue from adhesion in case they are in use; however, they are dissolved when no longer needed. Although these approaches have been attempted to fulfill the criteria for adhesion prevention, none can perfectly prevent adhesions in all situations. Overall of this work, a new method to fabricate an anti-adhesion membrane using biodegradable polymer and hydrogel has been developed. The ideal barrier for preventing postoperative adhesion would have the following properties; it should be (i) resorbable (ii) non-reactive (iii) easy to apply (iv) capable of being fixed in position. In order to fulfill these properties, we adopted solid freeform fabrication method combined with surface modification which includes the hydrogel coating, therefore, inner or outer structure can be controlled and the property of anti adhesion can be improved.

• 대한치과교정학회지
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• 제23권3호
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• pp.427-445
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• 1993

The ankylosis of temporomandibular joint occured by several causes directly developes TM joint disfunction, In cases with prolonged condylar ankylosis, especially at growing age the condylar ankylosis evokes malfunction of growth center area, and then developes the abnormal facial morphology and malocclusion. Therefore it must be cured. Almost authors have agreed to the necessity of surgical correction of the TMJ anylosis. but they did not decide the one surgical method to get the best result. The Tx. method suggested by many authors are the using interposition after resection of condyle to remain a lever of 3rd class in Mn. kinetics, the autogenous condylar graft and the alloplastic condylar graft. Some authors have got the satisfied results only with the condylectomy of the involved TMJ. This study also operated only the detachment of fibrous adhesion on ankylosed condylar side and then established occlusion in the case with the unilateral TMJ ankylosis and fibrous joint adhesion and facial asymmetry evoked after the fracture of condylar head at early age. This study got a improved mouth opening and a stable postsurgical result after 1 year. Also, this study reviewed many author's study about the chanracteristics, etiology, diagnosis and Tx. method for the ankylosis of TMJ.

• 한국수정란이식학회지
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• 제22권1호
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• pp.63-67
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• 2007

Sodium carboxymethylcellulose(SCMC)와 Hyaluronic acid(HA)가 수정란 이식 및 채란을 위한 복강 수술 후 생식기의 유착 방지 효과 여부를 확인하기 위하여 본 실험을 수행하였다. 실험 동물로 성숙한 암컷 한국 흑염소 20두를 대조군, saline 투여군, SCMC 1%, SCMC 2% 및 HA 0.4% 투여군에 각각 4마리씩 배치하였다. 수정란 채취를 위한 통상적인 방법의 수술을 시행한 후 약물 주입용 카테터를 절개부를 통하여 복강에 정착시킨 후 앞쪽에 끼운 채로 복막과 피부를 봉합한 후 약물을 처치하였다. 각 군의 흑염소들에 각각 체중 10 kg 당 50ml의 용액을 복강내로 투여하였으며, 대조군은 무처치하였다. 각 군은 3주 후에 상기와 동일한 방법으로 개복 수술하여 좌 우측의 자궁 및 난관채에서부터 난소까지의 2 부분으로 구분하여 각 부분의 유착 정도를 유착 범위, 피막의 상태 및 유착부의 분리 여부에 대해 각각의 등급을 정하여 판정하였고, 실험 동물의 반복 이용 가능성에 대해 알아보고자 똑같은 처치 방법으로 수술과 등급 판정을 반복하였다. 1차 실험에서는 자궁과 난소쪽 모두에서 SCMC 2%군의 점수$(mean{\pm}SD)$가 각각 $0.8{\pm}1.4$ 및 $1.5{\pm}2.8$로서 다른 군에 비해 유의적으로 낮았으며(P<0.05), 반복된 2차 실험에서도 SCMC 2% 군의 자궁과 난소에서의 점수가 각각 $4.1{\pm}1.6$ 및 $1.9{\pm}2.1$로서 다른 군에 비해 유의적으로 낮았다(p<0.05). 3차 실험에서 자궁의 판정 점수는 SCMC 1%가 $6.0{\pm}2.0$, 난소 점수는 SCMC 2% 가 $4.0{\pm}1.1$,로 다른 군에 비해 낮았고, 4차 실험에서는 자궁과 난소 모두에서 SCMC 2%가 각각 $7.0{\pm}2.1$, 및 $3.2{\pm}1.9$,로 다른 군에 비해 낮았으나 유의성은 없었다. 반복되는 실험 결과에 따른 비교시 모든 군에서 실험횟수가 반복될수록 유착점수가 높게 나타났다. 결론적으로 한국흑염소에서 수정란의 채취 및 이식을 위한 개복 수술 후 SCMC 2% 용액을 복강 내로 주입하는 것이 다른 처치에 비해 생식기의 유착 방지에 효과가 있으며, 반복 수술에 따른 생식기 유착 정도를 완화시켜줄 것으로 생각된다.

• Journal of Korean Neurosurgical Society
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• 제48권3호
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• pp.268-271
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• 2010

The ADCON-L $gel^{(R)}$ (Gliatech, Cleveland, OH, USA), a carbohydrate polymer gel. has been shown in a controlled clinical study to inhibit postsurgical adhesions and improve a patient's clinical outcome. Immediate complication of this gel has been reported in the recent literature including back pain, radiculitis and durotomy. However, delayed detection of disturbance of muscle healing and attachment in late postoperative state has been rarely reported. This report documents an unexpected delayed detected complication of the anti-adhesion barrier gel. which was used after lumbar discectomy one year ago, with review of literature.

• Journal of Pharmaceutical Investigation
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• 제34권6호
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• pp.477-482
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• 2004

The aim of the present study was to investigate the efficacy of a mixed gel formulation composed of sodium carboxymethyl cellulose and gellan gum (Na-CMC gel) for the prevention of adhesions after laminectomy. The anti-adhesive effect of the Na-CMC gel was tested in a controlled randomized study using an animal model of lumbar laminectomy. The animals (60 female Sprague-Dawley rats) were randomly allocated into two treatment groups to receive the Na-CMC gel on the injured area or no gel (control). The incidence of adhesions and their grade were blindly evaluated at 4, 8 and 12 weeks after surgery. The amount of scar tissue and tenacity were grossly reduced by the Na-CMC gel at postoperative 4, 8, and 12 weeks. The mean adhesion scores were 0.75, 1.25, and 1.38 at 4, 8, and 12 weeks in the gel-treated group, respectively. No significant inflammatory reaction was observed and the healing of wound was not affected by the Na-CMC gel. The Na-CMC gel reduced the amount of scar formation and tenacity in rat laminectomy model without affecting the healing of operation wound and other complications. Therefore, the Na-CMC gel may be the potential to prevent postsurgical adhesions in clinical state.