发明名称 |
PROCESS FOR THE FORMATION OF HIGH STRENGTH BI-ABSORBABLE SUTURE PRODUCED THEREBY |
摘要 |
A PGA/PLA copolymer suture fiber having a fiber tenacity of between approximately 7.2 to 8.0 grams per denier and a fiber elongation between approximately 22% and 35% is produced by a process that utilizes extruder apparatus having at least one heated zone that is maintained at a temperature of from about 20.degree. C below the copolymer melting point to about 5.degree.C above the copolymer melting poin t, a metering pump and a heated block that are maintained at a temperature of no more than about 40.degree.C above the copolymer melting point, a spinneret that is maintaine d at a temperature of from about 40.degree.C to about 60.degree.C above the copolymer melting point, and an elongated heated sleeve extending between six and twenty inches from the spinneret tha t is maintained at a temperature of at least about 60.degree.C above the copolyme r melting point. |
申请公布号 |
CA2433367(A1) |
申请公布日期 |
2003.12.25 |
申请号 |
CA20032433367 |
申请日期 |
2003.06.25 |
申请人 |
ETHICON INC. |
发明人 |
CHEN, GAOYUAN;EGIDIO, DOMINICK |
分类号 |
A61L17/00;A61L17/12;D01D5/08;D01F6/84 |
主分类号 |
A61L17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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