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題名 | Experimental Study of Materials Commonly Used for Surgical Suturing=生體內外科常用縫線之實驗 |
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作者 | 郭守仁; | 書刊名 | 中華民國外科醫學會雜誌 |
卷期 | 18:4 1985.12[民74.12] |
頁次 | 頁343-353 |
分類號 | 416.34 |
關鍵詞 | 生體內外科; 縫線; |
語文 | 英文(English) |
中文摘要 | 本實驗著重於外科縫線植入台灣土狗前後之斷裂力(breaking strength)結紮安全度(knot security)及應力-張力曲線(stress-strain)變化。 在無應力下,Dexon及Vicryl縫線斷裂力喪失速率呈現雙相圖形(1)植入,前7天為緩慢相(2)植入,後7天至10天為快速相,這種雙相現象比較符合一般傷口癒合之生理原則,因為手術後5天至10天傷口纖維素增殖,癒合力已漸漸增強的時期。結紮安全度(knot security)也顯示相同的結果。應力-張力曲線(stress-strain)是外科縫線之重要物理特性。本質驗發現Dexon,Vicryl與銘羊腸線(chromic catgut sutures)之應力-張力曲線改變很少,但是絲線植入後7天則顯示鬆弛現象之應力-張力曲線。在統計學上是有其意義。絲線縫合之鬆弛現象可能是造成早期傷口之併發症如血漿腫、血腫及傷口裂開原因之一。 |
英文摘要 | This report focuses on changes in breaking strength, on knot security and on stress-strain curve of four commonly used suture materials: Polyglycolic acid (PGA), Polyglactin-910 (PGN), silk, and chromic catgut, studied before and after implantation into canine subcutaneous tissues. The rate of the loss of the breaking strength of Polyglycolic acid (PGA) and Polyglactin-910 (PGN) sutures exhibited a biphasic pattem under tensionless state (1), an initial slow phase from Day Zero to Day 7 postimplantation, and (2), a rapid phase of strength loss seven to ten days after implantation. These observations are primarily physiological in view of the wound-healing process since the wound's fibroplastic period occurred and strengthened gradually from five to ten postoperative days. The knot security level also showed a result compatible with the rate of strength loss of suture strands, with the sante conclusion. The stress-strain curve of suture materials, an important physical characteristic, showed that Polyglycolic acid (PGA), Polyglactin-910 (PGN), and chromic catgut sutures changed little except in their breaking stress and strain, but the silk suture strands exhibited a relaxed stress-strain curve seven days after implantation, a statistically significant finding. This maceration phenomenon of silk sutures might account for early wound complications such as seroma, hematoma, and wound dehiscence. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。