WO2013185484A1 - 用于人体管腔腔体的无缝合伤口吻合器 - Google Patents

用于人体管腔腔体的无缝合伤口吻合器 Download PDF

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Publication number
WO2013185484A1
WO2013185484A1 PCT/CN2013/070472 CN2013070472W WO2013185484A1 WO 2013185484 A1 WO2013185484 A1 WO 2013185484A1 CN 2013070472 W CN2013070472 W CN 2013070472W WO 2013185484 A1 WO2013185484 A1 WO 2013185484A1
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WIPO (PCT)
Prior art keywords
lumen
human body
stapler
sutureless wound
middle section
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PCT/CN2013/070472
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English (en)
French (fr)
Inventor
闵以克
闵灿
Original Assignee
Min Yike
Min can
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Publication of WO2013185484A1 publication Critical patent/WO2013185484A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12009—Implements for ligaturing other than by clamps or clips, e.g. using a loop with a slip knot
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1107—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis for blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1132—End-to-end connections

Definitions

  • the present invention relates to a medical device, and more particularly to a seamless wound anastomat for a human lumen cavity.
  • the suture of the lumen cavity is mainly hand-stitched, stapler suture and collapsible suturing.
  • the safety factor of manual suture is relatively low; the stapler is relatively safe, but it remains in the patient for a lifetime, which has certain influence on the patient's body and mind; and the disintegrable stapler needs to borrow the unilateral stapler to complete the edge of the knife. Fixing and locking the disintegrable stapler is cumbersome, and the internal space of the disintegrable stapler left to the lumen is small, which affects the patient's postoperative recovery.
  • the technical problem to be solved by the present invention is to overcome the defects that the device used in the lumen suture operation in the prior art cannot be degraded, the operation process is complicated, and the lumen of the lumen is incompletely closed, and a cavity for the human body is provided. Body seamless wound anastomat.
  • a seamless wound stapler for a human lumen cavity characterized in that it comprises: a tubular body comprising an intermediate section; an outer diameter greater than the middle at both ends of the intermediate section a detachment prevention ring of the outer diameter of the segment; the two lumens to be anastomosis are respectively inserted from the two ends of the seamless wound stapler to the intermediate section, and the junction of the two lumens is located at the intermediate section;
  • the seamless wound stapler further includes at least one latching mechanism for securing the two lengths of lumen to the intermediate section from an outer wall of the lumen;
  • the tubular body is made of a medically degradable material, the lock
  • the buckle mechanism is made of a medical biodegradable polymer material.
  • the tubular body is supported from the interior of the lumen
  • the hollow portion of the tubular body forms a lumen tube to be anastomosed
  • the locking mechanism is disposed on the outer wall of the lumen to be anastomosed to effectively reduce the internal space of the two lumens and ensure the internal flow inside the lumen. Smooth movement to prevent blockage of the internal space of the lumen.
  • the lumen includes a lumen of the digestive system such as the esophagus, the gastrointestinal tract, the biliary tract, etc., a luminal lumen such as a blood vessel, a lymphatic vessel, etc., and a lumen of a urinary system such as a ureter, such as a ureter.
  • the seamless wound stapler of the present invention can be applied to all the lumens of the above human body, and is particularly useful for anastomosis of blood vessels, urinary tracts, and lumens of the digestive system.
  • the structure is completely the same, and only according to the diameter of the lumen to be anastomosis, that is, the diameter of the lumen of the blood vessel or the digestive system, a seamless wound stapler of different sizes can be used.
  • a retaining ring having an outer diameter larger than the outer diameter of the intermediate section is disposed.
  • the anti-offset ring can prevent the latch mechanism from slipping off from the axial direction.
  • the tubular body further comprises an extension extending outward from the other end of each of the retaining collars, the extension being a hollow grid-like cylinder.
  • the hollow mesh-like body has better flexibility and has an anti-winding effect, and can adapt to the compliance of the lumen.
  • the medical biodegradable material is a magnesium alloy material or a medical biodegradable polymer material.
  • Medical biodegradable magnesium alloy has ideal mechanical support, biocompatibility, easy degradation, and its degradation products participate in metabolism.
  • the magnesium alloy can be made of existing materials, and its components usually include: magnesium, rare earth (the mass ratio thereof) ⁇ 5%), niobium (the mass ratio is ⁇ 5%) and zirconium (the mass ratio is ⁇ 5%).
  • the tubular body adopts a magnesium alloy material or a medical biodegradable polymer material whose degradation rate is slower than the degradation speed of the locking mechanism.
  • the tubular body is degraded after the locking mechanism is completely degraded, which can prolong the support time for the lumen, and avoid a medical accident in which the two lumens are not completely matched.
  • the medical biodegradable polymer material comprises polycaprolactone (PCL), polysuccinic acid Butylene glycol ester (PBS), polylactic acid (PLA), polyhydroxyphthalic acid ester (PHA), methoxypolyethylene glycol-polycaprolactone (mPEG-PCL), preferably methoxypolyethylene glycol- Monomethoxyl poly(ethylene glycol)-b-poly(c-caprolactone).
  • PCL polycaprolactone
  • PBS polysuccinic acid Butylene glycol ester
  • PBS polylactic acid
  • PHA polyhydroxyphthalic acid ester
  • mPEG-PCL methoxypolyethylene glycol-polycaprolactone
  • mPEG-PCL methoxypolyethylene glycol- Monomethoxyl poly(ethylene glycol)-b-poly(c-caprolactone
  • the locking mechanism includes a strip-shaped body, and a hollow snap head is disposed at one end of the strip-shaped body; one side of the strip-shaped body is provided with external teeth, and an inner wall of the buckle head is adjacent to the One side of the external tooth is provided with an internal tooth adapted to the external tooth; after the strip body is inserted into the buckle head, the external tooth engages with the internal tooth, and the external tooth Both point to the outer wall of the lumen being fixed.
  • the tooth gap between the external teeth forms a space for facilitating the movement and growth of the lumen tissue, and the external tooth is pressed against the intermediate portion while effectively preventing the lumen body from being circumferentially Complete coating causes problems such as poor blood circulation and tissue necrosis.
  • the extending direction of the buckle head is consistent with the extending direction of the strip body.
  • the extending direction of the buckle head is perpendicular to the extending direction of the strip body.
  • the structure can ensure that the strip body forms a circle when it is wrapped around the outer wall of the lumen, thereby improving the sealing of the lumen.
  • the strip body has a wall thickness of 0.5 to 1.5 mm, preferably 1 to 1.5 mm.
  • the external teeth are arranged from a position 6 mm away from the head of the buckle.
  • the starting position of the external tooth abuts the buckle head.
  • a tip is provided at the free end of the strip body.
  • the tip allows the medical staff to thread the strip body into the buckle head, making the operation more convenient.
  • the outer surface of the intermediate section is provided with a non-slip layer.
  • the anti-slip layer can adopt bumps, wavy lines, diamond-shaped nets, etc., and can effectively prevent the sliding of the lumen under the combination with the locking mechanism.
  • the positive progressive effect of the invention lies in that the seamless wound anastomat of the human lumen cavity of the invention has the advantages of simple and compact structure, convenient operation, good supporting force and high safety performance.
  • the tubular body plays a supporting role from the inside of the lumen, the hollow portion forms a lumen tube to be anastomosis, and the locking mechanism is external to the lumen
  • the wall fixes the lumen, effectively reducing the amount of space occupied by the two lumens.
  • Figure 1 is a schematic view showing the structure of a tubular body of a seamless wound anastomat of a human lumen cavity in a preferred embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the tubular body of the seamless wound anastomat of a human lumen cavity in accordance with a preferred embodiment of the present invention.
  • FIG. 3 is a schematic view showing the structure of a locking mechanism of a seamless wound anastomat of a human lumen cavity according to a preferred embodiment of the present invention.
  • FIG. 4 is another schematic structural view of a locking mechanism of a seamless wound anastomat of a human lumen cavity according to a preferred embodiment of the present invention.
  • Fig. 5 is a view showing the state of use of the seamless wound anastomat of a human lumen cavity in a preferred embodiment of the present invention.
  • Fig. 6 is a schematic cross-sectional view taken along line A-A of Fig. 5.
  • Fig. 7 is a partial enlarged view of the lumen portion of the seamless wound anastomat of the human lumen cavity of the present invention to be anastomosed.
  • the seamless wound stapler of the human lumen cavity of the present embodiment includes a hollow tubular body including an intermediate section 1 provided on the outer surface of the intermediate section 1
  • a retaining ring 2 having an outer diameter larger than the outer diameter of the intermediate portion 1 is disposed at both ends of the intermediate portion 1, and the outer end of each of the retaining ring 2 is further extended outward.
  • a flexible extension 3 is obtained.
  • the extension 3 is a hollow grid-like cylinder.
  • the hollow portion 4 of the entire tubular body serves as a lumen tube to be anastomosed.
  • the seamless wound stapler in this embodiment further includes two locking mechanisms. Every Each of the locking mechanisms includes a strip-shaped body 5, and an outer tooth 51 is provided on the upper surface of the strip-shaped body 5.
  • a latching head 6 is disposed at one end of the strip-shaped body 5, and the extending direction of the latching head 6 coincides with the extending direction of the strip-shaped body 5.
  • An inner tooth 61 adapted to the outer tooth 51 is provided on the inner wall of the snap head 6.
  • a tip portion 52 is provided at the other end of the strip body 5.
  • the tubular body is made of a medically degradable magnesium alloy (product of Yangzhou Sanming Medical Devices Co., Ltd.).
  • the locking mechanism is made of methoxypolyethylene glycol-poly ⁇ -caprolactone material (product of Changchun Shengbo Ma Biomaterial Co., Ltd.), and the strip body 5 of the locking mechanism has a wall thickness of 1.2 mm.
  • the extending direction of the locking head portion 6' of the locking mechanism can also be perpendicular to the extending direction of the strip-shaped body 5, so that the strip-shaped body 5 is bent to form a more complete circular shape. , to better fit the outer wall of the lumen.
  • two lumens 100, 200 to be anastomosed are respectively inserted from the two ends of the tubular body, and the junction of the two lumens is located on the intermediate section 1.
  • the external teeth of the locking mechanism are directed toward the outer wall of the lumen, and the tip is passed through the buckle head, and the excess strip-shaped body is cut off after being tightened.
  • One of the locking mechanisms simultaneously locks the junction of the two sections of the lumen, thereby ensuring a smooth healing of the two sections of the lumen at the junction.

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  • Engineering & Computer Science (AREA)
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Abstract

一种用于人体管腔腔体的无缝合伤口吻合器，包括管状本体。管状本体包括中间段（1）。在中间段（1）的两端设有外径大于中间段（1）的防脱挡圈（2）。待吻合的两段管腔分别从该吻合器的两端向中间段（1）套入，该两段管腔在中间段（1）进行接壤。该吻合器还包括锁扣机构，在管腔的外壁该锁扣机构将两端管腔固定于中间段（1）。管状本体采用医用可降解材料制成。锁扣机构采用医用生物可降解聚合物材料制成。该吻合器结构简单、紧凑，而且操作便捷可靠。管状本体从管腔的内部支撑，锁扣机构从管腔外壁对管腔进行固定，进而减少对两段管腔内部空间的占有，保证了管腔内部通畅。

Description

用于人体管腔腔体的无缝合伤口吻合器
技术领域
本发明涉及一种医疗器械，特别涉及一种用于人体管腔腔体的无缝合伤 口吻合器。
背景技术
目前管腔腔体的缝合主要有手工缝合， 吻合器缝合和可崩解缝合器缝 合。 其中， 手工缝合的安全系数较低； 吻合器相对比较安全， 但是终身保留 在患者体内， 对患者的身心造成一定影响； 而可崩解吻合器由于需要外借荷 包单边吻合器来完成刀口端的固定并锁死可崩解吻合器， 动作繁琐， 而且该 可崩解吻合器留给管腔的内部空间较小， 影响患者术后恢复。
发明内容
本发明要解决的技术问题是为了克服现有技术中的管腔缝合手术采用 的装置存在无法降解、 操作过程复杂， 其管腔接壤处封闭不完全的缺陷， 提 供一种用于人体管腔腔体的无缝合伤口吻合器。
本发明是通过下述技术方案来解决上述技术问题的：
一种用于人体管腔腔体的无缝合伤口吻合器， 其特点在于， 其包括： 一 管状本体， 该管状本体包括一中间段； 在该中间段的两端均设有一外径大于 该中间段外径的防脱挡圈； 待吻合的两段管腔分别自该无缝合伤口吻合器的 两端向该中间段套入， 并且所述两段管腔的接壤处位于该中间段处； 该无缝 合伤口吻合器还包括至少一个用于从所述管腔的外壁将所述两段管腔固定 于该中间段的锁扣机构； 该管状本体采用医用可降解材料制成， 所述锁扣机 构采用医用生物可降解聚合物材料制成。 该管状本体从管腔的内部支撑起 来， 管状本体的中空部分形成待吻合的管腔管道， 将锁扣机构设置在待吻合 的管腔的外壁能有效减少对两段管腔内部空间的占有量，保证管腔内部的内 流物流动的顺畅， 防止管腔内部空间堵塞。 而采用上述医用可降解的材料使 得该无缝合伤口吻合器不会永久保留在人体内， 其有一定的机械支撑力， 生 物相容性好， 易降解， 其降解物能够参与新陈代谢。 此外， 在刀口完全吻合 前， 管腔内流物不会渗透到腔体外， 无缝合伤口吻合器所处位置不易打结， 刀口吻合处平整、 完全。 所述管腔包括了消化系统管腔例如食道、 胃肠道、 胆道等， 循环系统管腔例如血管、 淋巴管等， 泌尿系统管腔例如输尿管等人 体各组织系统的管腔。本发明的无缝合伤口吻合器可适用上述人体中所有管 腔， 尤其可用于血管、 泌尿系以及消化系统管腔的吻合。 使用时其结构完全 相同， 仅根据待吻合管腔， 即血管或消化系统管腔的直径不同， 而采用不同 尺寸规格的无缝合伤口吻合器即可。
其中， 在该中间段的两端均设有一外径大于该中间段外径的防脱挡圈。 该防脱挡圈能从轴向防止锁扣机构滑脱。
其中， 该管状本体还包括自每个所述防脱挡圈的另一端向外延伸的延伸 段， 该延伸段为镂空的网格状柱体。 其中， 该镂空的网格状主体的柔韧性较 好， 具备防绕作用， 能够适应管腔的顺应性。
其中， 该医用生物可降解材料为镁合金材料或医用生物可降解聚合物材 料。 医用生物可降解镁合金具有理想的机械支撑力、 生物相容性、 易降解， 其降解物参与新陈代谢，所述镁合金可采用现有材料，其组分通常包括：镁、 稀土 （其质量比 <5%)、 铱 （其质量比 <5% ) 及锆 （其质量比 <5%)。
其中， 该管状本体采用降解速度慢于该锁扣机构的降解速度的镁合金材 料或医用生物可降解聚合物材料。该管状本体在锁扣机构降解完全之后才完 成降解能够延长对于管腔的支撑时间，避免两段管腔尚未完全吻合而发生医 疗事故。
其中， 该医用生物可降解聚合物材料包括聚己内酯 （PCL)、 聚丁二酸 丁二醇酯 （PBS )、 聚乳酸（PLA)、 聚羟基垸酸酯 （PHA)、 甲氧基聚乙二醇 -聚己内酯（mPEG-PCL)，优选甲氧基聚乙二醇-聚 ε -己内酯 [monomethoxyl poly(ethylene glycol)-b-poly(c-caprolactone)]。
其中， 该锁扣机构包括一个条状本体， 在该条状本体的一端设有一中空 的卡扣头部； 该条状本体的一侧设有外齿牙， 该卡扣头部的内壁靠近该外齿 牙的一侧设有与所述外齿牙适配的内齿牙； 该条状本体插入该卡扣头部后， 该外齿牙与该内齿牙咬合， 且所述外齿牙均指向被固定的管腔的外壁。 所述 外齿牙之间的齿牙槽形成了有利于该管腔组织活动和生长的空间，在外齿牙 将管腔压紧在上述中间段的同时， 又有效避免管腔本体在周向被完全包覆造 成血液流通不畅而引起组织坏死等问题。
其中， 该卡扣头部的延伸方向与该条状本体的延伸方向一致。
其中， 该卡扣头部的延伸方向与该条状本体的延伸方向垂直。 该结构能 够确保该条状本体包覆在管腔外壁的时候形成一个圆形， 提高管腔的封闭 性。
其中， 该条状本体的壁厚度为 0.5~1.5毫米、 优选 1-1.5毫米。
其中， 该外齿牙自距离该卡扣头部 6毫米的位置开始设置。
其中， 该外齿牙的起始位置紧靠该卡扣头部。
其中， 在该条状本体的自由端设有一尖部。 该尖部便于医务人员将条状 本体穿入卡扣头部， 使得操作更为便捷。
其中，该中间段的外表面设有一防滑层。该防滑层可采用凸点、波浪紋、 菱形网紋等， 在与锁扣机构的结合下能有效地防止管腔滑动。
本发明中， 上述优选条件在符合本领域常识的基础上可任意组合， 即得 本发明各较佳实施例。
本发明的积极进步效果在于：本发明的人体管腔腔体的无缝合伤口吻合 器结构简单、 紧凑， 操作便捷， 支撑力好， 安全性能高。 管状本体从管腔的 内部起到支撑作用， 中空部分形成待吻合的管腔管道， 锁扣机构从管腔的外 壁对管腔进行固定， 有效减少对两段管腔内部空间的占有量。 附图说明
图 1为本发明一较佳实施例中的人体管腔腔体的无缝合伤口吻合器的管 状本体的结构示意图。
图 2为本发明一较佳实施例中的人体管腔腔体的无缝合伤口吻合器的管 状本体的剖视图。
图 3为本发明一较佳实施例中的人体管腔腔体的无缝合伤口吻合器的锁 扣机构的结构示意图。
图 4为本发明一较佳实施例中的人体管腔腔体的无缝合伤口吻合器的锁 扣机构的另一结构示意图。
图 5为本发明一较佳实施例中的人体管腔腔体的无缝合伤口吻合器的使 用状态图。
图 6为沿图 5中 A-A剖切线剖切后的示意图。
图 7为本发明的人体管腔腔体的无缝合伤口吻合器的锁扣待吻合的管腔 部位的局部放大图。 具体实施方式
下面结合附图给出本发明较佳实施例， 以详细说明本发明的技术方案。 如图 1和 2所示， 本实施例中的人体管腔腔体的无缝合伤口吻合器包括 了一个中空的管状本体， 该管状本体包括一中间段 1， 在中间段 1的外表面 设有作为防滑层的菱形花紋 11，在中间段 1的两端均设有一个外径大于该中 间段 1外径的防脱挡圈 2， 在每个防脱挡圈 2的另一端还向外延伸出一柔性 的延伸段 3， 本实施例中该延伸段 3为镂空的网格状柱体。 整个管状本体的 中空部 4作为待吻合的管腔管道。
如图 3所示， 本实施例中的无缝合伤口吻合器还包括两个锁扣机构。 每 个锁扣机构均包括一条状本体 5， 在条状本体 5的上表面设有外齿牙 51。 在 条状本体 5的一端设有一卡扣头部 6， 该卡扣头部 6的延伸方向与该条状本 体 5的延伸方向一致。 在卡扣头部 6的内壁设有与外齿牙 51适配的内齿牙 61。 在条状本体 5的另一端设有一尖部 52。
本实施例中， 管状本体采用医用可降解的镁合金（扬州三明医疗器械有 限公司产品）制成。锁扣机构采用甲氧基聚乙二醇-聚 ε -己内酯材料（长春 圣博玛生物材料有限公司产品）制成， 且该锁扣机构的条状本体 5的壁厚度 为 1.2毫米。
再如图 4所示，锁扣机构的卡扣头部 6'的延伸方向还可与条状本体 5的 延伸方向成垂直设置， 从而使得条状本体 5弯曲后形成一更为完整的圆形， 以更好得贴合在管腔的外壁。
如图 5~7所示， 在手术中， 将两段待吻合的管腔 100， 200分别自管状 本体的两端套入， 两段管腔的接壤处位于中间段 1上。 然后将锁扣机构的外 齿牙朝向管腔的外壁， 将尖部穿过卡扣头部， 抽紧后将多余的条状本体剪去 即可。 其中一个锁扣机构同时锁扣住两段管腔的接壤处， 从而确保两段管腔 在接壤处能顺利的愈合。
虽然以上描述了本发明的具体实施方式，但是本领域的技术人员应当理 解， 这些仅是举例说明， 本发明的保护范围是由所附权利要求书限定的。 本 领域的技术人员在不背离本发明的原理和实质的前提下， 可以对这些实施方 式做出多种变更或修改， 但这些变更和修改均落入本发明的保护范围。

Claims

权利要求
1、 一种用于人体管腔腔体的无缝合伤口吻合器， 其特征在于， 其包括: 一管状本体， 该管状本体包括一中间段； 待吻合的两段管腔分别自该无缝合 伤口吻合器的两端向该中间段套入， 并且所述两段管腔的接壤处位于该中间 段处； 该无缝合伤口吻合器还包括至少一个用于从所述管腔的外壁将所述两 段管腔固定于该中间段的锁扣机构； 该管状本体采用医用可降解材料制成， 所述锁扣机构采用医用生物可降解聚合物材料制成。
2、 如权利要求 1所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 在该中间段的两端均设有一外径大于该中间段外径的防脱挡圈。
3、 如权利要求 2所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该管状本体还包括自每个所述防脱挡圈的另一端向外延伸的延伸 段， 该延伸段为镂空的网格状柱体。
4、 如权利要求 1所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该医用生物可降解材料为镁合金材料或医用生物可降解聚合物材 料。
5、 如权利要求 1-4 中任一项所述的用于人体管腔腔体的无缝合伤口吻 合器， 其特征在于， 该管状本体采用降解速度慢于该锁扣机构的降解速度的 镁合金材料或医用生物可降解聚合物材料。
6、 如权利要求 1-4 中任一项所述的用于人体管腔腔体的无缝合伤口吻 合器， 其特征在于， 该医用生物可降解聚合物材料为甲氧基聚乙二醇 -聚己 内酯。
7、 如权利要求 1所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该锁扣机构包括一个条状本体， 在该条状本体的一端设有一中空的 卡扣头部； 该条状本体的一侧设有外齿牙， 该卡扣头部的内壁靠近该外齿牙 的一侧设有与所述外齿牙适配的内齿牙； 该条状本体插入该卡扣头部后， 该 外齿牙与该内齿牙咬合， 且所述外齿牙均指向被固定的管腔的外壁。
8、 如权利要求 7所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该卡扣头部的延伸方向与该条状本体的延伸方向一致。
9、 如权利要求 7所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该卡扣头部的延伸方向与该条状本体的延伸方向垂直。
10、 如权利要求 7-9中任一项所述的用于人体管腔腔体的无缝合伤口吻 合器， 其特征在于， 该条状本体的壁厚度为 0.5-1.5毫米。
11、 如权利要求 10所述的用于人体管腔腔体的无缝合伤口吻合器， 其 特征在于， 该外齿牙自距离该卡扣头部 6毫米的位置开始设置。
12、 如权利要求 10所述的用于人体管腔腔体的无缝合伤口吻合器， 其 特征在于， 该外齿牙的起始位置紧靠该卡扣头部。
13、 如权利要求 10所述的用于人体管腔腔体的无缝合伤口吻合器， 其 特征在于， 在该条状本体的自由端设有一尖部。
14、 如权利要求 1所述的用于人体管腔腔体的无缝合伤口吻合器， 其特 征在于， 该中间段的外表面设有一防滑层。
PCT/CN2013/070472 2012-06-14 2013-01-15 用于人体管腔腔体的无缝合伤口吻合器 WO2013185484A1 (zh)

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