The invention discloses a vein stripping catheter, which comprises a steel pipe for stripping veins and a handle for connecting the back end of the steel pipe, wherein the front end of the steel pipe is provided with a horn flaring, the front end of the horn flaring is provided with a cutting edge, the rear end is provided with a round rectangular hole on the wall of the steel pipe, and the narrow opening outside of the horn flaring is provided with an annular cutting knife. The inner cavity of the steel pipe is provided with a pulling mechanism which is connected with a circular cutter and makes the circular cutter move. The back end of the handle is provided with a ring groove. A pulling ring is arranged along the ring groove sleeve, and the pulling ring is connected with the pulling mechanism. The pulling ring drives the circular cutter to move by pulling the ring. The inner cavity of the steel pipe is provided with a slender hose, which is connected with the interface of the syringe, and is used Intraoperative injection of drugs; the steel tube consisted of an inflexible rigid segment of the steel tube and a flexible section of the flexible steel tube. The invention integrates stripping, anesthesia and cutting into one, and has convenient operation. It not only solves the disadvantages of the existing inverted stripping technology, such as large injury to the body and long operation time, but also solves the problem of limited stripping range in the current valgus stripping operation.
【技术实现步骤摘要】
静脉剥脱导管
本专利技术涉及医疗器械
,尤其涉及一种用于人体内静脉剥脱的器械。
技术介绍
静脉曲张是最常见的周围血管疾病之一,其主要是多见于下肢大隐静脉和/或小隐静脉,经典治疗方法是采用大隐静脉根部高位结扎,并对大隐静脉及其曲张分支进行剥脱手术治疗,其使用的器械是一根两头呈半椭圆形金属头的细钢丝,在暴露并切断肢体大隐张静脉远近端,将导向头从待剥脱的静脉远端穿入,近端到导出,然后慢慢拉出,利用导向头内翻剥脱大隐静脉。此外,冠状动脉搭桥手术中,常需要取用位于腿部的大隐静脉或其他血管,在主动脉和冠状动脉堵塞病变的远端之间搭桥,使主动脉的血液通过移植的血管供应到冠状动脉的远端,以恢复相应心肌的血液供应,改善心肌缺血状态。在推行过程中,由于静脉瓣、病变血管等障碍物及大角度血管弯路会造成插入不畅,无法继续推进,需要多次进行切口,重复同样手术过程,增加病人痛苦、医生劳动强度与手术时间。因此,本领域的技术人员致力于开发一种可以方便弯曲变向推进的用于剥脱静脉的医疗器械。
技术实现思路
有鉴于现有技术的上述缺陷,本专利技术所要解决的技术问题是解决当前静脉剥脱导管无法处理大角度弯路推 ...
【技术保护点】
1.一种静脉剥脱导管,其包括用于剔出静脉的钢管和与钢管后端相接的手柄,其特征在于:钢管的前端设有喇叭扩口以便于将静脉分离,喇叭扩口的前端设有刃口,喇叭扩口的后部于钢管管壁上开设有圆角矩形孔,用于静脉的抽出与通过;沿着喇叭扩口的窄口外侧套设有环形切刀,环形切刀能够贴着钢管外沿滑动以切断从圆角矩形孔抽出的静脉,钢管的内腔设有与环形切刀相连且使环形切刀运动的牵引机构;手柄的后端设有环槽,环槽从手柄的外壁延伸至手柄的后端面,沿着环槽套设有拉环,拉环与牵引机构相连,通过将拉环向手柄后侧滑动从而带动环形切刀向圆角矩形孔方向运动;在钢管的内腔于轴线处设有细长的软管,软管从手柄的后端延伸至 ...
【技术特征摘要】
1.一种静脉剥脱导管,其包括用于剔出静脉的钢管和与钢管后端相接的手柄,其特征在于:钢管的前端设有喇叭扩口以便于将静脉分离,喇叭扩口的前端设有刃口,喇叭扩口的后部于钢管管壁上开设有圆角矩形孔,用于静脉的抽出与通过;沿着喇叭扩口的窄口外侧套设有环形切刀,环形切刀能够贴着钢管外沿滑动以切断从圆角矩形孔抽出的静脉,钢管的内腔设有与环形切刀相连且使环形切刀运动的牵引机构;手柄的后端设有环槽,环槽从手柄的外壁延伸至手柄的后端面,沿着环槽套设有拉环,拉环与牵引机构相连,通过将拉环向手柄后侧滑动从而带动环形切刀向圆角矩形孔方向运动;在钢管的内腔于轴线处设有细长的软管,软管从手柄的后端延伸至圆角矩形孔的后部,软管与注射器接口连通,用于手术中注射药物;钢管包括不可弯曲的钢管硬段和可弯曲的钢管软段,其中钢管硬段与手柄前端相接,钢管软段位于喇叭扩口与钢管硬段之间。2.如权利要求1所述的静脉剥脱导管,其特征在于,钢管上从喇叭扩口的窄口到圆角矩形孔的后部的管壁段上设有若干开槽,牵引机构包括若干钢丝,钢丝位于钢管与软管之间,每一钢丝从拉环内壁经过手柄和钢管的内腔并穿过钢管的开...
【专利技术属性】
技术研发人员:徐钦华,祝慧鹏,俞旭龙,周艺琳,施灵波,俞灵君,张颖耀,
申请(专利权)人:宁波市鄞州钦华企业管理咨询有限公司,
类型:发明
国别省市:浙江,33
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