CN107343827B - 一种能微调长度的医用诱导人工骨 - Google Patents
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Abstract
本发明涉及人工骨技术领域,具体地说是一种能微调长度的医用诱导人工骨,其特征在于:所述的端盖总体呈T形,包括盖部和颈部;所述的端盖的颈部外壁上沿长度方向设有一列齿槽,一位于人工骨本体腔体内的齿轮与齿槽啮合,且一转轴的一端与齿轮的轴孔嵌套连接,转轴的另一端贯通人工骨本体的外壁;转轴旋转带动齿轮旋转,从而带动端盖作相对于人工骨本体的伸缩运动。本发明与现有技术相比,可以在人工骨植入人体后,在后续根据实际情况微调人工骨的长度,十分方便;且调节用的转轴可以通过向外抽拉滑杆部使卡接齿轮的伸缩销收缩进套筒部,从而可以抽拉出转轴使转轴脱离齿轮,而留在人工骨本体内的齿轮并不影响人体。
Description
技术领域
本发明涉及人工骨技术领域,具体地说是一种能微调长度的医用诱导人工骨。
背景技术
在骨科领域,由于严重创伤、骨肿瘤、骨髓炎等多种原因所致的骨缺损十分常见。目前常用的骨修复材料包括自体骨和金属假体。自体骨增加了患者的创伤和痛苦;金属假体存在松动、断裂等问题。因此,人工骨替代材料移植修复骨缺损成为医学重点。当需替换关节或治疗骨断裂时,最理想的方式是通过组织再生功能实现骨的自身修复。然而在许多情形下,人体骨并不能实现自身修复,例如骨组织坏死,骨关节创伤,这时就需要人工骨的帮助,理想人工骨材料的研制是医学和生物材料科学领域的一个重要课题。
目前在制作人工骨时,比如腿骨时,会按照病人健康一侧的腿骨通过三维成型再打印出另一侧腿骨部分的人工骨模型,一般尺寸比较精准。但在极端情况下,也会出现双侧受伤的情况,此时双侧人工骨的长度比较不容易精确。
发明内容
本发明的目的是克服现有技术的不足,设计一种在植入人体后还可以微调长度的诱导人工骨。
为实现上述目的,设计一种能微调长度的医用诱导人工骨,包括设有端盖的人工骨本体,所述的人工骨本体设有腔体,腔体内填充有诱导骨基质,其特征在于:
所述的端盖总体呈T形,包括盖部和颈部;
所述的端盖的颈部外壁上沿长度方向设有一列齿槽,一位于人工骨本体腔体内的齿轮与齿槽啮合,且一转轴的一端与齿轮的轴孔嵌套连接,转轴的另一端贯通人工骨本体的外壁;转轴旋转带动齿轮旋转,从而带动端盖作相对于人工骨本体的伸缩运动;
所述的转轴包括套筒部、滑杆部、伸缩销,套筒部的一端为封闭端,套筒部的另一端为开口端;所述的滑杆部滑动嵌设于套筒部内,且滑杆部的一端设为圆锥头,在圆锥头上沿圆锥的母线设一T形嵌槽,所述的T形嵌槽沿滑杆部的径向对称设有两个,所述的T形嵌槽的两端为封闭状;在套筒部的壁上近封闭端的端部处沿径向对称设有两个T形通孔,每个T形通孔内嵌设一个伸缩销,所述的伸缩销的顶部设为与T形通孔相契合的T形头部,所述的伸缩销的底面设为与圆锥头的斜度一致的斜面,且伸缩销的斜面两侧分别设有翼板部;所述的伸缩销的翼板部嵌入圆锥头的T形嵌槽内;当滑杆部完全嵌入套筒部内与套筒部的封闭端贴合时,伸缩销沿圆锥头的斜面沿径向被顶出套筒部外,当滑杆部相对抽离套筒部时,伸缩销沿圆锥头的斜面下滑,直到T形头部嵌于套筒部的T形通孔内;
对应转轴的两个T形头部处的齿轮的轴孔内壁上分别设有卡槽,当滑杆部完全嵌入套筒部内与套筒部的封闭端贴合时,所述的T形头部嵌入相应的卡槽内。
所述的端盖设为中空,且端盖和人工骨本体分别采用微孔结构,端盖的中空部及人工骨本体的腔体内分别填充有诱导骨基质。
所述的端盖、人工骨本体、齿轮分别采用纳米羟基磷灰石-胶原蛋白复合生物材料。
所述的诱导骨基质采用重组人骨形态发生蛋白-2复合透明质酸钠凝胶。
本发明与现有技术相比,可以在人工骨植入人体后,在后续根据实际情况微调人工骨的长度,十分方便;且调节用的转轴可以通过向外抽拉滑杆部使卡接齿轮的伸缩销收缩进套筒部,从而可以抽拉出转轴使转轴脱离齿轮,而留在人工骨本体内的齿轮并不影响人体。
附图说明
图1为本发明的结构示意图。
图2为图1中所示转轴的一种状态的结构示意图。
图3为图1中所示转轴的另一种状态的结构示意图。
具体实施方式
现结合附图对本发明作进一步地说明。
实施例1
参见图1~图3,本例中一种能微调长度的医用诱导人工骨,包括设有端盖2的人工骨本体1,所述的人工骨本体1设有腔体,腔体内填充有诱导骨基质,其特征在于:
所述的端盖2的颈部外壁上沿长度方向设有一列齿槽6,一位于人工骨本体1腔体内的齿轮5与齿槽6啮合,且一转轴3的一端与齿轮5的轴孔嵌套连接,转轴的3的另一端贯通人工骨本体1的外壁;转轴3旋转带动齿轮5旋转,从而带动端盖2作相对于人工骨本体1的伸缩运动;
所述的转轴3包括套筒部31、滑杆部32、伸缩销34,套筒部31的一端为封闭端,套筒部31的另一端为开口端;所述的滑杆部32滑动嵌设于套筒部31内,且滑杆部32的一端设为圆锥头,在圆锥头上沿圆锥的母线设一T形嵌槽33,所述的T形嵌槽33沿滑杆部的径向对称设有两个,所述的T形嵌槽的两端为封闭状;在套筒部31的壁上近封闭端的端部处沿径向对称设有两个T形通孔,每个T形通孔内嵌设一个伸缩销34,所述的伸缩销34的顶部设为与T形通孔相契合的T形头部,所述的伸缩销34的底面设为与圆锥头的斜度一致的斜面,且伸缩销34的斜面两侧分别设有翼板部35;所述的伸缩销34的翼板部35嵌入圆锥头的T形嵌槽33内;当滑杆部32完全嵌入套筒部内与套筒部31的封闭端贴合时,伸缩销34沿圆锥头的斜面沿径向被顶出套筒部31外,当滑杆部32相对抽离套筒部31时,伸缩销34沿圆锥头的斜面下滑,直到T形头部嵌于套筒部的T形通孔内;
对应转轴的两个T形头部处的齿轮5的轴孔内壁上分别设有卡槽,当滑杆部32完全嵌入套筒部内与套筒部31的封闭端贴合时,所述的T形头部嵌入相应的卡槽内。
进一步的,所述的端盖2设为中空,且端盖和人工骨本体1分别采用微孔结构,端盖的中空部及人工骨本体的腔体内分别填充有诱导骨基质4。
进一步的,所述的端盖、人工骨本体、齿轮分别采用纳米羟基磷灰石-胶原蛋白复合生物材料。
进一步的,诱导骨基质4采用重组人骨形态发生蛋白-2复合透明质酸钠凝胶。
当本发明中人工骨植入人体后,转轴的外端是位于人体皮肤外面的,方便调整人工骨长度,调整好长度后,可以将转轴从齿轮中拔出,并脱离人体,然后封闭伤口,这里与转轴的连接处的齿轮的轴孔内壁上是设有嵌套伸缩销34的T形头部用的卡槽的,圆锥头上的T形嵌槽33的两端为封闭状,可以将伸缩销34的底面的翼板部35束缚在T形嵌槽33的活动范围内。当要拔出转轴时,向外抽拉滑杆部32,使伸缩销34沿T形嵌槽33滑动至圆锥头的小端面,从而将伸缩销34往套筒部内收缩脱离齿轮上的卡槽,然后再将整个套筒部往外拔出,再封闭转轴处的伤口,而人工骨内的齿轮随着自体骨的身长,也会被固定在其内,并不妨碍人体正常功能。
Claims (2)
1.一种能微调长度的医用诱导人工骨,包括设有端盖(2)的人工骨本体(1),所述的人工骨本体(1)设有腔体,腔体内填充有诱导骨基质,其特征在于:
所述的端盖总体呈T形,包括盖部和颈部;
所述的端盖(2)的颈部外壁上沿长度方向设有一列齿槽(6),一位于人工骨本体(1)腔体内的齿轮(5)与齿槽(6)啮合,且一转轴(3)的一端与齿轮(5)的轴孔嵌套连接,转轴(3)的另一端贯通人工骨本体(1)的外壁;转轴(3)旋转带动齿轮(5)旋转,从而带动端盖(2)作相对于人工骨本体(1)的伸缩运动;
所述的转轴(3)包括套筒部(31)、滑杆部(32)、伸缩销(34),套筒部(31)的一端为封闭端,套筒部(31)的另一端为开口端;所述的滑杆部(32)滑动嵌设于套筒部(31)内,且滑杆部(32)的一端设为圆锥头,在圆锥头上沿圆锥的母线设一T形嵌槽(33),所述的T形嵌槽(33)沿滑杆部的径向对称设有两个,所述的T形嵌槽的两端为封闭状;在套筒部(31)的壁上近封闭端的端部处沿径向对称设有两个T形通孔,每个T形通孔内嵌设一个伸缩销(34),所述的伸缩销(34)的顶部设为与T形通孔相契合的T形头部,所述的伸缩销(34)的底面设为与圆锥头的斜度一致的斜面,且伸缩销(34)的斜面两侧分别设有翼板部(35);所述的伸缩销(34)的翼板部(35)嵌入圆锥头的T形嵌槽(33)内;当滑杆部(32)完全嵌入套筒部内与套筒部(31)的封闭端贴合时,伸缩销(34)沿圆锥头的斜面沿径向被顶出套筒部(31)外,当滑杆部(32)相对抽离套筒部(31)时,伸缩销(34)沿圆锥头的斜面下滑,直到T形头部嵌于套筒部的T形通孔内;
对应转轴的两个T形头部处的齿轮(5)的轴孔内壁上分别设有卡槽,当滑杆部(32)完全嵌入套筒部内与套筒部(31)的封闭端贴合时,所述的T形头部嵌入相应的卡槽内;所述的端盖、人工骨本体、齿轮分别采用纳米羟基磷灰石-胶原蛋白复合生物材料;所述的诱导骨基质(4)采用重组人骨形态发生蛋白-2复合透明质酸钠凝胶。
2.如权利要求1所述的一种能微调长度的医用诱导人工骨,其特征在于:所述的端盖(2)设为中空,且端盖和人工骨本体(1)分别采用微孔结构,端盖的中空部及人工骨本体的腔体内分别填充有诱导骨基质(4)。
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CN204238671U (zh) * | 2014-11-28 | 2015-04-01 | 国家电网公司 | 封闭式机械防盗门锁 |
CN206252564U (zh) * | 2016-08-17 | 2017-06-16 | 上海秦时实业有限公司 | 一种能微调长度的医用诱导人工骨 |
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US6663670B2 (en) * | 2002-01-18 | 2003-12-16 | Depuy Orthopaedics, Inc. | Adjustable long bone prosthesis |
US8231656B2 (en) * | 2007-04-10 | 2012-07-31 | Life Spine, Inc. | Adjustable spine distraction implant |
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Publication number | Priority date | Publication date | Assignee | Title |
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US4502160A (en) * | 1983-10-27 | 1985-03-05 | Dow Corning Wright | Adjustable length prosthetic joint implant |
JPH0914535A (ja) * | 1995-06-30 | 1997-01-17 | Sonoda Seisakusho:Kk | 圧縮管継手 |
CN204238671U (zh) * | 2014-11-28 | 2015-04-01 | 国家电网公司 | 封闭式机械防盗门锁 |
CN206252564U (zh) * | 2016-08-17 | 2017-06-16 | 上海秦时实业有限公司 | 一种能微调长度的医用诱导人工骨 |
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