CN108236486A - 微创手术刀的制造方法 - Google Patents

微创手术刀的制造方法 Download PDF

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CN108236486A
CN108236486A CN201611203997.6A CN201611203997A CN108236486A CN 108236486 A CN108236486 A CN 108236486A CN 201611203997 A CN201611203997 A CN 201611203997A CN 108236486 A CN108236486 A CN 108236486A
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blade
parts
knife
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plug division
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朱宁峰
矫夏
郁菁菁
冯叶华
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Kunshan Branch Source Of Hong Sen Metal Technology Co Ltd
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Abstract

本发明公开一种微创手术刀的制造方法,其刀片的一端为刀刃,另一端为插接部,一下螺栓杆旋入下螺纹孔并嵌入插接部的下凹孔内;所述刀刃上开有若干个吸血孔,此吸血孔通过分导管与集液管连通;刀刃上部具有一倒角斜面,一橡胶套套装于所述条形刀柄的中后部,此橡胶套的外表面均匀分布有若干个凸点;刀片通过以下步骤获得:将超细碳化钨50~60份、钛酸锶12~20份、碳化钛 8~10份、碳化铬 6~8份、二硅化钼4~8份、氮化钛7~9份、碳化钒1~2和石墨粉3~4份投入粉碎机内进行粉碎处理,形成直径小于20微米的混合粉末。本发明制造方法获得的微创手术刀使得手术刀的刀片拥有超高的硬度,而且开锋后的刀片十分锋利,且极高的强度不容易出现弯曲,稳定可靠,实现了立体三维定位。

Description

微创手术刀的制造方法
技术领域
本发明涉及医疗器械领域,尤其涉及一种微创手术刀的制造方法。
背景技术
手术刀是进行外科手术的必备工具,其安全性对于执刀医生和病患来说至关重要。以往传统手术刀通常有两种类型:一种是塑柄手术刀,另一种是钢柄手术刀。塑柄手术刀主要由一次性使用的刀片和一次性使用的塑柄组成,塑柄前部设有刀片座,刀片安装在刀片座上。钢柄手术刀主要由一次性使用的刀片和非一次性使用的钢柄组成,使用前需要将刀片安装到刀柄上,使用后将刀片从刀柄上移除;现有技术存在在使用过程中难以避免晃动、松动的问题,还可能会发生刀头在外力左右下脱落的情况,危险性极高。
发明内容
本发明提供一种微创手术刀的制造方法,此制造方法获得的微创手术刀使得手术刀的刀片拥有超高的硬度,而且开锋后的刀片十分锋利,且极高的强度不容易出现弯曲,稳定可靠,实现了立体三维定位。
为达到上述目的,本发明采用的技术方案是:一种微创手术刀的制造方法,包括:刀片、条形刀柄,所述刀片的一端为刀刃,另一端为插接部,此插接部上端面和下端面分别开有上凹孔和下凹孔,所述条形刀柄前端具有供插接部嵌入的插孔;所述条形刀柄的前部沿周向依次开有上螺纹孔、中螺纹孔和下螺纹孔,一锁紧螺丝旋入中螺纹孔并压紧插接部,一上螺栓杆旋入上螺纹孔并嵌入插接部的上凹孔内,一下螺栓杆旋入下螺纹孔并嵌入插接部的下凹孔内;所述刀片的刀刃边缘与刀片长度方向夹角为70~80°;所述刀刃上开有若干个吸血孔,此吸血孔通过分导管与集液管连通,此集液管通过到导管连接到吸液接口,所述分导管与集液管位于刀片内;
所述刀刃上部具有一倒角斜面,一橡胶套套装于所述条形刀柄的中后部,此橡胶套的外表面均匀分布有若干个凸点;
所述刀片通过以下步骤获得:
步骤一、将超细碳化钨50~60份、钛酸锶12~20份、碳化钛 8~10份、碳化铬 6~8份、二硅化钼4~8份、氮化钛7~9份、碳化钒1~2和石墨粉3~4份投入粉碎机内进行粉碎处理,形成直径小于20微米的混合粉末;
步骤二、通过压力机对混合料颗粒进行成型压制形成压坯;
步骤三、将压坯放置烧结炉进行烧结形成刀片毛坯,具体步骤如下:
步骤3-1、先升温至260℃,再以每小时4~6℃的速率升温至 500℃,保温1~2小时,此阶段采用真空条件烧结;
步骤3-2、再以每小时8~12℃的速率升温至1260℃,保温1~2小时,此阶段气氛为氩气和氮气形成的混合气体,此时的烧结压力为 6Mpa;
步骤3-3、再以每小时2~4℃的速率升温至1380℃,保温1~2小时,此阶段气氛为氩气,此时的烧结压力为4Mpa;
步骤3-4、随炉冷却;
步骤四、对刀片毛坯进行精磨加工,载开锋和打磨处理形成初步刀片;
步骤五、将步骤四的初步刀片进行液氮深冷处理从而获得所述刀片。
上述技术方案中进一步改进的技术方案如下:
作为优选,所述条形刀柄的截面为圆形。
作为优选,所述刀片的刀刃边缘与刀片长度方向夹角为75°或者78°。
作为优选,所述导管由位于刀片内的第一导管和位于条形刀柄内的第二导管贯通组成。
作为优选,若干个所述凸点由若干个大凸点和若干个小凸点组成,此大凸点和小凸点交替排列。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:
1、本发明微创手术刀的制造方法,其采用超细碳化钨50~60份、钛酸锶12~20份、碳化钛8~10份、碳化铬 6~8份、二硅化钼4~8份、氮化钛7~9份和碳化钒1~2份进行烧结,使得手术刀的刀片拥有超高的硬度,而且开锋后的刀片十分锋利,且极高的强度不容易出现弯曲;其烧结过程三个阶段压力由真空依次切换到高压烧结、次高压烧结,并伴随特定组分气氛切换,有利于碳化物弥散析出,进而使刀片的材质组织更加紧密,增加了抗弯强度和抗崩刃性。
2、本发明微创手术刀的制造方法,其刀片的一端为刀刃,另一端为插接部,此插接部上端面和下端面分别开有上凹孔和下凹孔,所述条形刀柄前端具有供插接部嵌入的插孔;所述条形刀柄的前部沿周向依次开有上螺纹孔、中螺纹孔和下螺纹孔,一锁紧螺丝旋入中螺纹孔并压紧插接部,一上螺栓杆旋入上螺纹孔并嵌入插接部的上凹孔内,一下螺栓杆旋入下螺纹孔并嵌入插接部的下凹孔内,拆装方便、稳定可靠,实现了立体三维定位,避免了刀体易松动、晃动的问题,具有很好的推广应用前景。
3、本发明微创手术刀的制造方法,其刀刃上开有若干个吸血孔,此吸血孔通过分导管与集液管连通,此集液管通过到导管连接到吸液接口,所述分导管与集液管位于刀片内,其手术时能实时吸走手术过程中切口不断溢出的血液或组织液等液体,方便手术中医生观察伤口情况,有利于提高手术的精度;其次,其橡胶套套装于条形刀柄的中后部,此橡胶套的外表面均匀分布有若干个凸点,若干个所述凸点由若干个大凸点和若干个小凸点组成,此大凸点和小凸点交替排列,方便握持,可以防止手术刀滑落,避免了条形刀柄表面光滑,在手术过程中很容易滑脱的缺陷,从而大大降低了医疗事故率。
附图说明
附图1为本发明微创手术刀结构示意图;
附图2为附图1的局部示意图。
以上附图中:1、刀片;2、条形刀柄;21、上螺纹孔;22、中螺纹孔;23、下螺纹孔;3、刀刃;4、插接部;41、上凹孔;42、下凹孔;5、插孔;6、锁紧螺丝;7、上螺栓杆;8、下螺栓杆;9、吸血孔;10、分导管;11、集液管;12、导管;121、第一导管;122、第二导管;13、吸液接口;14、倒角斜面;15、橡胶套;16、凸点;161、大凸点;162、小凸点。
具体实施方式
下面结合附图及实施例对本发明作进一步描述:
实施例1:一种微创手术刀的制造方法,包括:刀片1、条形刀柄2,所述刀片1的一端为刀刃3,另一端为插接部4,此插接部4上端面和下端面分别开有上凹孔41和下凹孔42,所述条形刀柄2前端具有供插接部4嵌入的插孔5;所述条形刀柄2的前部沿周向依次开有上螺纹孔21、中螺纹孔22和下螺纹孔23,一锁紧螺丝6旋入中螺纹孔22并压紧插接部4,一上螺栓杆7旋入上螺纹孔21并嵌入插接部4的上凹孔41内,一下螺栓杆8旋入下螺纹孔23并嵌入插接部4的下凹孔42内;所述刀片1的刀刃3边缘与刀片1长度方向夹角为70~80°;所述刀刃3上开有若干个吸血孔9,此吸血孔9通过分导管10与集液管11连通,此集液管11通过到导管12连接到吸液接口13,所述分导管10与集液管11位于刀片1内;
所述刀刃3上部具有一倒角斜面14,一橡胶套15套装于所述条形刀柄2的中后部,此橡胶套15的外表面均匀分布有若干个凸点16。
所述刀片1通过以下步骤获得:
步骤一、将超细碳化钨50~60份、钛酸锶12~20份、碳化钛 8~10份、碳化铬 6~8份、二硅化钼4~8份、氮化钛7~9份、碳化钒1~2和石墨粉3~4份投入粉碎机内进行粉碎处理,形成直径小于20微米的混合粉末;具体由以下重量份组分组成,如表1所示:
表1
步骤二、通过压力机对混合料颗粒进行成型压制形成压坯;
步骤三、将压坯放置烧结炉进行烧结形成刀片毛坯,具体步骤如下:
步骤3-1、先升温至300℃,再以每小时5℃的速率升温至 480℃,保温1~2小时,此阶段采用真空条件烧结;
步骤3-2、再以每小时10℃的速率升温至1250℃,保温1~2小时,此阶段气氛为氩气和氮气形成的混合气体,此时的烧结压力为 6Mpa;
步骤3-3、再以每小时3℃的速率升温至1350℃,保温1~2小时,此阶段气氛为氩气,此时的烧结压力为4Mpa;
步骤3-4、随炉冷却;
步骤四、对刀片毛坯进行精磨加工,载开锋和打磨处理形成初步刀片;
步骤五、将步骤四的初步刀片进行液氮深冷处理从而获得所述刀片1。
上述条形刀柄2的截面为圆形,上述刀片1的刀刃3边缘与刀片1长度方向夹角为75°或者78°。
若干个所述凸点16由若干个大凸点161和若干个小凸点162组成,此大凸点161和小凸点162交替排列。
采用上述微创手术刀的制造方法时,其使得手术刀的刀片拥有超高的硬度,而且开锋后的刀片十分锋利,且极高的强度不容易出现弯曲;其烧结过程三个阶段压力由真空依次切换到高压烧结、次高压烧结,并伴随特定组分气氛切换,有利于碳化物弥散析出,进而使刀片的材质组织更加紧密,增加了抗弯强度和抗崩刃性;其次,其拆装方便、稳定可靠,实现了立体三维定位,避免了刀体易松动、晃动的问题,具有很好的推广应用前景;其次,其手术时能实时吸走手术过程中切口不断溢出的血液或组织液等液体,方便手术中医生观察伤口情况,有利于提高手术的精度;再次,其方便握持,可以防止手术刀滑落,避免了条形刀柄表面光滑,在手术过程中很容易滑脱的缺陷,从而大大降低了医疗事故率。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。

Claims (5)

1.一种微创手术刀的制造方法,其特征在于:包括:刀片(1)、条形刀柄(2),所述刀片(1)的一端为刀刃(3),另一端为插接部(4),此插接部(4)上端面和下端面分别开有上凹孔(41)和下凹孔(42),所述条形刀柄(2)前端具有供插接部(4)嵌入的插孔(5);所述条形刀柄(2)的前部沿周向依次开有上螺纹孔(21)、中螺纹孔(22)和下螺纹孔(23),一锁紧螺丝(6)旋入中螺纹孔(22)并压紧插接部(4),一上螺栓杆(7)旋入上螺纹孔(21)并嵌入插接部(4)的上凹孔(41)内,一下螺栓杆(8)旋入下螺纹孔(23)并嵌入插接部(4)的下凹孔(42)内,所述刀片(1)的刀刃(3)边缘与刀片(1)长度方向夹角为70~80°;所述刀刃(3)上开有若干个吸血孔(9),此吸血孔(9)通过分导管(10)与集液管(11)连通,此集液管(11)通过到导管(12)连接到吸液接口(13),所述分导管(10)与集液管(11)位于刀片(1)内;
所述刀刃(3)上部具有一倒角斜面(14),一橡胶套(15)套装于所述条形刀柄(2)的中后部,此橡胶套(15)的外表面均匀分布有若干个凸点(16);
所述刀片(1)通过以下步骤获得:
步骤一、将超细碳化钨50~60份、钛酸锶12~20份、碳化钛 8~10份、碳化铬 6~8份、二硅化钼4~8份、氮化钛7~9份、碳化钒1~2和石墨粉3~4份投入粉碎机内进行粉碎处理,形成直径小于20微米的混合粉末;
步骤二、通过压力机对混合料颗粒进行成型压制形成压坯;
步骤三、将压坯放置烧结炉进行烧结形成刀片毛坯,具体步骤如下:
步骤3-1、先升温至260℃,再以每小时4~6℃的速率升温至 500℃,保温1~2小时,此阶段采用真空条件烧结;
步骤3-2、再以每小时8~12℃的速率升温至1260℃,保温1~2小时,此阶段气氛为氩气和氮气形成的混合气体,此时的烧结压力为 6Mpa;
步骤3-3、再以每小时2~4℃的速率升温至1380℃,保温1~2小时,此阶段气氛为氩气,此时的烧结压力为4Mpa;
步骤3-4、随炉冷却;
步骤四、对刀片毛坯进行精磨加工,载开锋和打磨处理形成初步刀片;
步骤五、将步骤四的初步刀片进行液氮深冷处理从而获得所述刀片(1)。
2.根据权利要求1所述的微创手术刀的制造方法,其特征在于:所述条形刀柄(2)的截面为圆形。
3.根据权利要求1所述的微创手术刀的制造方法,其特征在于:所述刀片(1)的刀刃(3)边缘与刀片(1)长度方向夹角为75°或者78°。
4.根据权利要求1所述的微创手术刀的制造方法,其特征在于:所述导管(12)由位于刀片(1)内的第一导管(121)和位于条形刀柄(2)内的第二导管(122)贯通组成。
5.根据权利要求1所述的微创手术刀的制造方法,其特征在于:若干个所述凸点(16)由若干个大凸点(161)和若干个小凸点(162)组成,此大凸点(161)和小凸点(162)交替排列。
CN201611203997.6A 2016-12-23 2016-12-23 微创手术刀的制造方法 Pending CN108236486A (zh)

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* Cited by examiner, † Cited by third party
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JPH06169928A (ja) * 1992-09-14 1994-06-21 Becton Dickinson & Co 外科用ブレードホルダ
EP1031322A2 (en) * 1999-02-26 2000-08-30 Thomas D. Petersen Scalpel with a double blade edge and detachable handle
CN1427751A (zh) * 2000-03-15 2003-07-02 分子冶金公司 具有高锐度和韧度的手术刀片
CN101600395A (zh) * 2006-12-08 2009-12-09 马尼株式会社 手术刀、手术刀用刀片及其制造方法、以及手术刀用刀柄
US20130079804A1 (en) * 2011-09-23 2013-03-28 Trevor John Milton Scalpel blade safety accessory
CN203234800U (zh) * 2013-03-19 2013-10-16 昆山科森科技有限公司 低创伤外科手术刀
CN103976775A (zh) * 2014-05-21 2014-08-13 昆山科森科技股份有限公司 用于手术刀的制造工艺
CN104958089A (zh) * 2011-12-26 2015-10-07 昆山科森科技股份有限公司 低创伤外科微创手术刀

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06169928A (ja) * 1992-09-14 1994-06-21 Becton Dickinson & Co 外科用ブレードホルダ
EP1031322A2 (en) * 1999-02-26 2000-08-30 Thomas D. Petersen Scalpel with a double blade edge and detachable handle
CN1427751A (zh) * 2000-03-15 2003-07-02 分子冶金公司 具有高锐度和韧度的手术刀片
CN101600395A (zh) * 2006-12-08 2009-12-09 马尼株式会社 手术刀、手术刀用刀片及其制造方法、以及手术刀用刀柄
US20130079804A1 (en) * 2011-09-23 2013-03-28 Trevor John Milton Scalpel blade safety accessory
CN104958089A (zh) * 2011-12-26 2015-10-07 昆山科森科技股份有限公司 低创伤外科微创手术刀
CN203234800U (zh) * 2013-03-19 2013-10-16 昆山科森科技有限公司 低创伤外科手术刀
CN103976775A (zh) * 2014-05-21 2014-08-13 昆山科森科技股份有限公司 用于手术刀的制造工艺

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