CN106333733A - Core-free puncturing device - Google Patents

Core-free puncturing device Download PDF

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Publication number
CN106333733A
CN106333733A CN 201610878843 CN201610878843A CN106333733A CN 106333733 A CN106333733 A CN 106333733A CN 201610878843 CN201610878843 CN 201610878843 CN 201610878843 A CN201610878843 A CN 201610878843A CN 106333733 A CN106333733 A CN 106333733A
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CN
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Patent type
Prior art keywords
sleeve
chute
piercing tip
end
coreless
Prior art date
Application number
CN 201610878843
Other languages
Chinese (zh)
Inventor
孙宝峰
黄晨
马猛
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江苏风和医疗器材有限公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238Type of minimally invasive operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A61B2017/0034Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means adapted to be inserted through a working channel of an endoscope
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B2017/3419Sealing means between cannula and body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B2017/3454Details of tips

Abstract

The invention discloses a core-free puncturing device. The core-free puncturing device comprises a puncturing tip, a sleeve assembly and a sealing assembly, wherein the sleeve assembly comprises a sleeve; the sleeve is arranged thoroughly; one end of the sleeve is selectively sealed through the sealing assembly; the other end of the sleeve is selectively opened or closed through the puncturing tip; one end of the puncturing tip is stored in the other end of the sleeve; and the puncturing tip is connected to an outer side wall surface at the other end of the sleeve through a rotatable manner. The core-free puncturing device provided by the invention is convenient to use and low in cost; the core-free puncturing device has no puncturing core rod in a traditional puncturing device and the puncturing of the puncturing device is realized through the puncturing tip; and an end opening of the sleeve is opened when an anastomat or other surgical instruments need to enter an abdominal cavity, and then the anastomat or the other surgical instruments can enter.

Description

无芯穿刺器 Coreless puncture

技术领域 FIELD

[0001]本发明涉及一种外科器械,具体而言,涉及一种无芯穿刺器,属于医疗器材领域。 [0001] The present invention relates to a surgical instrument, particularly, to a coreless puncture, belonging to the field of medical equipment.

背景技术 Background technique

[0002]在腹腔检查、腹腔手术及其他微创或外科手术中,穿刺器是必不可少的手术器械。 [0002] In laparoscopy, or abdominal surgery, and other minimally invasive surgical procedures, the trocar surgical instrument is essential. 穿刺器可以在人体的腹壁中建立进入通道,以便供吻合器或其他手术器械(如内窥镜、剪刀、导丝、导管、滤器、支架等)进入腹腔内,并提供气体进出的通道,以控制手术所需的气腹,以便进行检查或手术操作。 Piercer access passage may be established in the body of the abdominal wall in order for the anastomosis or other surgical instruments (e.g., endoscopes, scissors, guide wire, catheter, filter, stent, etc.) into the abdominal cavity and provide a gas passage and out, to pneumoperitoneum required for control operation, or surgical operation for inspection.

[0003]在微创吻合器医疗手术开始时,医生一般先在患者腹部划开一个小切口,再将穿刺芯杆的穿刺端的顶点对准划开的小切口左右往复转动的同时向下移动,穿刺器使穿刺套管穿过患者腹部皮层,然后,医生将穿刺套管内部的穿刺芯杆拔出。 [0003] In minimally invasive medical procedures stapler, doctors generally to the patient's abdomen cut open a small incision, and then puncture the apex end of the piercing stem is aligned with the left and right small incision cut open reciprocally moves downward while rotating, puncture allows the patient's abdomen through the skin puncture cannula, then the doctor will puncture the core rod inside the puncture cannula removed.

[0004]然而,由于穿刺器多为一次性使用,从而,传统的带有穿刺芯杆的穿刺器中,每个穿刺器的穿刺芯杆在完成穿刺后即被弃置不用,如此造成了严重的浪费,提高了穿刺器的制造成本;且因穿刺器的密封结构为弹性材质,为了保障其密封性,穿刺芯杆与密封套管组件需拆分后包装,提高了包装成本。 [0004] However, since the multi-puncture is disposable, so that, with the conventional puncture piercing mandrel, the core of each piercer piercing rod after completion of pricking i.e. disuse, thus causing serious waste, increases the manufacturing cost of the trocar; and trocar seal structure due to an elastic material, in order to protect its sealing, piercing the stem and the sealing sleeve assembly needs to be split into packaging for increased packaging costs. 因此,针对上述问题,有必要提出进一步的解决方案。 Therefore, for the above-mentioned problems, it is necessary to propose further solutions.

发明内容 SUMMARY

[0005]针对现有技术的不足,本发明旨在提供一种无芯穿刺器,以克服现有技术中存在的不足。 [0005] for the deficiencies of the prior art, the present invention aims to provide a coreless puncture, to overcome the deficiencies of the prior art.

[0006]为实现上述发明目的,本发明提供一种无芯穿刺器,其包括:穿刺尖端、套管组件以及密封组件; [0006] In order to achieve the above object, the present invention provides a coreless trocar, comprising: a piercing tip, the cannula assembly and a seal assembly;

[0007]所述套管组件包括套管,所述套管贯通设置,所述套管的一端由所述密封组件进行选择性密封,所述套管的另一端由所述穿刺尖端选择性打开或闭合,且所述穿刺尖端的一端收容于所述套管的所述另一端中,所述穿刺尖端以可旋转的方式连接于所述套管另一端的外侧壁面上。 [0007] The sleeve assembly comprises a sleeve disposed through said sleeve selectively sealing one end by the sealing assembly, the other end of the cannula piercing tip selectively open or closed, and the piercing tip end received in the other end of the sleeve, the piercing tip is rotatably connected to the outer sidewall surface of the other end of the sleeve.

[0008]作为本发明的无芯穿刺器的改进,所述穿刺尖端具有第一位置和第二位置;所述穿刺芯尖端位于所述第一位置时,所述穿刺尖端的中心轴线与所述套管的中心轴线相平行或重合,且所述套管的所述另一端由所述穿刺尖端闭合;所述穿刺芯尖端位于所述第二位置时,所述穿刺尖端的中心轴线与所述套管的中心轴线之间具有夹角,且所述套管的所述另一端由所述穿刺尖端打开。 [0008] As an improvement of the coreless trocar of the present invention, said piercing tip having a first position and a second position; when the piercing tip of the core in the first position, the piercing tip of the central axis sleeve parallel to the central axis or coincident, and the other end of the sleeve of the piercing tip is closed; when the piercing tip of the core in the second position the piercing tip of the central axis the angle between the other end having a central axis of the sleeve, the sleeve and the piercing tip opening.

[0009]作为本发明的无芯穿刺器的改进,所述套管的内侧壁上对称设置有滑动槽,所述穿刺尖端的外侧壁上对称设置有滑块,所述滑块可沿所述滑动槽滑动。 [0009] As an improvement of the coreless trocar of the present invention, the inner wall of the sleeve is provided with a slide groove symmetrically, the outer wall of the piercing tip symmetrically provided a slider movable along said sliding the slide groove.

[0010]作为本发明的无芯穿刺器的改进,所述滑动槽包括第一滑槽和第二滑槽,所述第一滑槽大致沿所述套管的轴向方向延伸设置,所述第一滑槽和第二滑槽的端部相连通,且所述第一滑槽和第二滑槽之间具有夹角,所述夹角为钝角。 [0010] As an improvement of the coreless trocar of the present invention, the slide groove comprising a first chute and second chute, said first chute extending substantially in the axial direction of the sleeve, the and the second ends of the first sliding chute in communication, and having an included angle between said first chute and second chute, said obtuse angle.

[0011]作为本发明的无芯穿刺器的改进,所述滑动槽还包括第三滑槽,所述第三滑槽与所述第一滑槽和第二滑槽相连通,且所述第三滑槽与所述第二滑槽对称设置,所述第三滑槽与所述第二滑槽的对称轴与所述第一滑槽长度方向的中心线重合。 [0011] As an improvement of the coreless trocar of the present invention, the slide groove further comprises a third chute, a third chute with the first chute and second chute in communication, and the second three chutes disposed symmetrically with the second slot, the third chute centerline axis of symmetry of the second chute with the first chute coincides with the longitudinal direction.

[0012]作为本发明的无芯穿刺器的改进,所述第二滑槽和第三滑槽之间具有夹角,所述夹角小于等于180°;所述夹角小于180°时,所述第二滑槽和第三滑槽之间具有凸起,所述凸起朝向所述第一凹槽延伸设置;所述夹角等于180°时,所述第二滑槽和第三滑槽之间平滑连接。 [0012] As an improvement of a coreless trocar of the present invention having an included angle between said second and third chute chute, the angle is less than equal to 180 °; when the angle is less than 180 °, the between said second chute having a chute and a third projection, said projection extending toward the first groove; when the angle equals 180 °, the second and third chute chute smooth connection.

[0013]作为本发明的无芯穿刺器的改进,所述凸起的端部为弧形或直线型。 [0013] As an improvement of the coreless trocar of the present invention, an end portion of the projection is arcuate or straight.

[0014]作为本发明的无芯穿刺器的改进,所述滑动槽为弧形槽,所述滑块可自所述弧形槽的一端滑动至另一端,所述滑块位于所述弧形槽的一端时,所述穿刺尖端的中心轴线与所述套管的中心轴线相平行或重合,且所述套管的所述另一端由所述穿刺尖端闭合;所述滑块滑动至所述弧形槽的另一端时,所述穿刺尖端的中心轴线与所述套管的中心轴线之间具有夹角,且所述套管的所述另一端由所述穿刺尖端打开。 [0014] As an improvement of the coreless trocar of the present invention, the slide groove is arc-shaped groove, one end of said arcuate slot of said slider from sliding to the other end, the slider at the arcuate the end of the slot when the piercing tip of the other end of the central axis parallel to the central axis of the ferrule or overlap, and the piercing tip of the cannula is closed; slide the slider to the when the other end of the arcuate groove, said piercing tip having an included angle between the central axis of the central axis of the sleeve, the sleeve and the other end of the piercing tip opening.

[0015]作为本发明的无芯穿刺器的改进,所述穿刺尖端的端部对称设置有延伸部,所述滑块位于所述延伸部的外侧壁上。 [0015] As an improvement of the coreless trocar of the present invention, the piercing tip end portion is provided symmetrically extending portion of the slider is located outside of the wall of the extending portion.

[0016]作为本发明的无芯穿刺器的改进,所述穿刺尖端的外侧壁上设置有台阶部。 [0016] As an improvement of the coreless trocar of the present invention, the piercing tip of the outer wall is provided with a stepped portion.

[0017]作为本发明的无芯穿刺器的改进,所述穿刺尖端和所述套管均设置有凹陷结构,防止两者相互运动时产生干涉。 [0017] As an improvement of the coreless trocar of the present invention, the piercing tip and the sleeve is provided with a recess structure to prevent interference with each other when both the motion.

[0018]作为本发明的无芯穿刺器的改进,所述穿刺尖端的内部空间中设置有斜面,所述斜面的边缘与所述穿刺尖端的内侧壁相连接,所述斜面朝向所述穿刺尖端的旋转方向倾斜设置,且所述斜面靠近所述套管的所述另一端。 [0018] As an improvement of the coreless trocar of the present invention, the piercing tip is provided with an internal space in a slope of the edge of the piercing tip is connected to the inner side wall, the ramp toward the piercing tip inclined direction of rotation, and the other end adjacent said inclined surface of said sleeve.

[0019]作为本发明的无芯穿刺器的改进,所述斜面为椭圆形,或者,所述斜面包括第一斜面和第二斜面,所述第一斜面和第二斜面相交,所述套管的轴线通过所述第一斜面和第二斜面之间的交线,所述第一斜面和第二斜面均为半椭圆形。 [0019] As an improvement of the coreless trocar of the present invention, the inclined surface is elliptical, or the ramp comprises first and second sloped faces, the first and second sloped faces intersecting said sleeve axis through the intersection between the first and second sloped faces, the first and second sloped faces are semi-oval.

[0020]与现有技术相比,本发明的有益效果是:本发明的无芯穿刺器不具备传统穿刺器中的穿刺芯杆,因而成本较低,并且不必将穿刺芯杆与密封套管组件需拆分后包装,降低了包装成本。 [0020] Compared with the prior art, the beneficial effects of the present invention is: a coreless trocar of the present invention does not have a conventional trocar puncture in the stem, and therefore lower cost, and without having to puncture the sealing sleeve and the stem assembly needs to be split into packaging, reducing packaging costs. 无芯穿刺器依靠穿刺尖端实现穿刺器的穿刺,且可在需要将吻合器或其他手术器械进入腹腔时,打开套管的端口,供吻合器或其他手术器械进入,因而使用方便。 Coreless piercer piercing tip rely trocar puncture implement, and may be required when the stapler or other surgical instruments into the abdominal cavity, the sleeve open port, or for another surgical stapling instrument access, and thus easy to use.

附图说明 BRIEF DESCRIPTION

[0021]图1为本发明的无芯穿刺器一具体实施方式的的穿刺尖端与套管组件分解示意图; Piercing tip cannula assembly [0021] FIG. 1 is a coreless puncture a particular embodiment of the present invention is an exploded view of the embodiment;

[0022]图2为本发明的无芯穿刺器中,所述穿刺芯尖端位于所述第一位置时的平面示意图; Coreless puncture [0022] FIG. 2 of the present invention, the piercing tip is located in the core of the schematic plan view of a first position;

[0023]图3为本发明的无芯穿刺器中,所述穿刺芯尖端位于所述第二位置时的平面示意图; Coreless puncture [0023] FIG. 3 in the present invention, the piercing tip is located in the core schematic plan view of the second position;

[0024]图4为本发明的无芯穿刺器中套管一具体实施方式的轴向剖面示意图; Coreless puncture [0024] FIG. 4 of the present invention in a specific embodiment the sleeve an axial sectional view;

[0025]图5为本发明的无芯穿刺器中套管另一具体实施方式的轴向剖面示意图; Axial coreless piercer [0025] FIG. 5 of the present invention, another specific embodiment of the sleeve cross-sectional view;

[0026]图6为本发明的无芯穿刺器中穿刺尖端内部设置有斜面时的轴向剖面示意图; Piercing tip disposed axially inner beveled cross-sectional view when a coreless trocar [0026] FIG. 6 of the present invention;

[0027]图7为本发明的无芯穿刺器中穿刺尖端内部设置有斜面时的轴向剖面示意图。 When the piercing tip is provided inside an axial sectional view of the inclined surface [0027] FIG. 7 of the present invention in a coreless puncture.

具体实施方式 detailed description

[0028]下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 [0028] Example embodiments of the present invention is described in detail below, exemplary embodiments of the embodiment shown in the accompanying drawings, wherein same or similar reference numerals designate the same or similar elements or elements having the same or similar functions.

[0029]在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“轴向”、“径向”、“周向”、“往复”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。 [0029] In the description of the present invention, it is to be understood that the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front "," rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inner "," outer "," axial "," radial "," orientation or positional relationship circumferential "," shuttle "or the like indicating a positional relationship of the orientation shown in the accompanying drawings, for convenience of description only and the present invention is to simplify the description, but does not indicate or imply that the device or element referred to must have particular orientation, the orientation of a particular configuration and operation, can not be construed as limiting the present invention.

[0030]此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。 [0030] In addition, the terms "first", "second" are used to indicate or imply relative importance or the number of technical features specified implicitly indicated the purpose of description and should not be understood. 由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。 Thus, there is defined "first", "second" features may be explicitly or implicitly include at least one of the feature. 在本发明的描述中,“多个”的含义是至少两个,例如两个、三个等,除非另有明确具体的限定。 In the description of the present invention, the meaning of the "plurality" is at least two, e.g. two, three, etc., unless explicitly specifically limited.

[0031]下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。 [0031] By following with reference to the embodiments described are exemplary, and are intended for explaining the present invention and should not be construed as limiting the present invention. 下面结合具体的实施方式对本发明的各技术方案进行详细说明。 Next, the technical solutions of the present invention will be described in detail with reference to specific embodiments.

[0032]如图1所示,本发明的无芯穿刺器包括:穿刺尖端10、套管组件以及密封组件。 [0032] 1, coreless puncture of the present invention comprises: a piercing tip 10, the cannula assembly and a seal assembly.

[0033]所述穿刺尖端10用于实现穿刺器的穿刺,其取代了现有穿刺器中的穿刺芯。 [0033] The piercing tip 10 for puncturing to achieve a trocar, which replaces the conventional piercer piercing the core. 且所述穿刺尖端10可在需要将吻合器或其他手术器械进入腹腔时,打开套管的端口,供吻合器或其他手术器械进入。 And the piercing tip 10 may be required when the stapler or other surgical instruments into the abdominal cavity, the sleeve open port, or for another surgical stapling instrument access.

[0034]所述套管组件包括套管20,所述套管20贯通设置,以在其进入人体腹腔后建立吻合器或其他手术器械的进入通道。 [0034] The cannula assembly includes a cannula 20, through the sleeve 20 is provided to establish a stapler after it enters the human body abdominal cavity or other surgical instrument into the passage. 所述套管20的一端由所述密封组件(未图示)进行选择性密封,所述套管20的另一端21由所述穿刺尖端10选择性打开或闭合,且所述穿刺尖端10的一端收容于所述套管20的所述另一端21中。 One end of the sleeve 20 is selectively sealed by the sealing assembly (not shown), the other end 20 of the sleeve 21 is opened or closed selectively by the piercing tip 10, and tip 10 of the piercing One end of the ferrule 20 accommodated in the other end 21. 具体地,所述穿刺尖端10以旋转的方式活动连接于所述套管20端部的外侧壁面上。 In particular, the piercing tip 10 is rotatably movably connected to the outer end portion of the side wall surface 20 of the sleeve. 其中,所述选择性密封是指,在需要吻合器或其他手术器械进入腹腔时,所述密封组件对所述套管20的一端不进行密封;在不需要吻合器或其他手术器械进入腹腔时,所述密封组件对所述套管20的一端进行密封。 Wherein said selective sealing means, if needed stapler or other surgical instruments into the abdominal cavity, the seal assembly 20 on one end of the sleeve is not sealed; into the abdominal cavity without the need for stapling or other surgical instrument when the seal assembly 20 on one end of the sealing sleeve. 所述选择性打开或关闭是指,在进行穿刺时,所述穿刺尖端10闭合所述套管20的另一端21;在需要吻合器或其他手术器械进入腹腔时,所述穿刺尖端10打开所述套管20的另一端21。 Selectively opening or closing said means, during piercing, the piercing tip 10 is closed and the other end 2120 of the cannula; when needed stapler or other surgical instruments into the abdominal cavity, the piercing tip 10 of the opening another end 21 of said sleeve 20.

[0035]如此,当需要穿刺时,所述穿刺尖端10闭合所述套管20的另一端21,在穿刺作用力下,穿刺尖端10穿过患者腹部的切口皮层,进入到人体的腹腔中。 [0035] Thus, when necessary puncture, the puncture tip 10 closing the other end 20 of the sleeve 21, under the biasing force of the piercing, the piercing tip 10 through the patient's abdomen skin incision into the abdominal cavity of the body. 当需要向人体腹腔中伸入吻合器或其他手术器械时,吻合器或其他手术器械从套管20的一端进入套管20,在伸入的吻合器或其他手术器械的作用下,穿刺尖端10进行旋转运动,并打开所述套管20的另一端21,从而方便吻合器或其他手术器械的进入。 When necessary extends into the stapler or other surgical instruments into the abdominal cavity of the body, a stapler or other surgical instrument from the end of the sleeve 20 into the sleeve 20, under the effect of extending into the stapler or other surgical instrument, piercing tip 10 rotational movement, and the other open end 20 of the sleeve 21, thereby facilitating entering stapler or other surgical instrument.

[0036]配合参照图2、3,进一步地,所述穿刺尖端10具有第一位置A和第二位置B。 [0036] with reference to FIG. 3, and further, the piercing tip 10 having a first position and a second position B. A 所述穿刺尖端10位于所述第一位置A时,所述穿刺尖端10的中心轴线与所述套管20的中心轴线相平行或重合,且所述套管20的另一端21由所述穿刺尖端10闭合;所述穿刺芯尖端10位于所述第二位置B时,所述穿刺尖端10的中心轴线与所述套管20的中心轴线之间具有夹角,所述套管20的另一端21由所述穿刺尖端10打开。 When the piercing tip 10 in the first position A, the piercing tip from the central axis 21 parallel to or coincident with the central axis of the sleeve 20, and the other end 20 of the sleeve 10 of the piercing tip 10 is closed; when the piercing tip of the core 10 is in the second position B, the angle between the piercing tip having a central axis 10 and the central axis of the sleeve 20, the other end of the sleeve 20 21 by the piercing tip 10 is opened.

[0037]此外,如图1所示,所述穿刺尖端10的一端的外侧壁上设置有台阶部101,所述台阶部101与所述套管20的另一端21的端面相抵靠。 [0037] Further, as shown, the piercing tip end 10 of the outer wall 1 is provided with a stepped portion 101, the stepped portion 101 of the sleeve 20 with the other end against the end face 21 against. 优选地,所述套管20的另一端21与所述穿刺尖端10相套装的部分的壁厚与所述台阶部101的高度相一致。 Preferably, the sleeve 20 the other end of the height 21 coincides with the thick portion 10 with the piercing tip and the stepped portion kit 101. 所述高度沿所述套管20的径向方向。 The height in the radial direction of the sleeve 20. 如此设置,保持了穿刺尖端10和套管20外径尺寸的一致性,可避免发生卡住患者组织的情况,有利于穿刺过程的顺利进行。 Thus provided, the piercing tip 10 to maintain the consistency and the outer diameter of the sleeve 20, avoiding any jamming of the patient's tissue occurs conducive to the smooth puncturing process.

[0038]如图4所示,为了实现所述穿刺尖端10以旋转的方式打开或闭合所述套管20的端口,所述套管20的内侧壁上对称设置有滑动槽,所述套管20的内侧壁包括所述另一端21的内侧壁,所述穿刺尖端10的外侧壁上对称设置有滑块11,所述滑块11可沿所述滑动槽滑动。 [0038] As shown, in order to achieve the piercing tip 10 of the opening 4 in a rotating manner or closing the ports 20 of the sleeve, the inner wall of the sleeve 20 is provided symmetrically with a slide groove, said sleeve the inner side wall 20 includes inner side wall 21 of the other end, the outer wall of the piercing tip 10 is provided symmetrically with a slider 11, the slider 11 slides along the slide groove. 其中,所述滑动槽可贯通所述套管20的壁面设置,也可凹陷设置于所述套管20的内侧壁上。 Wherein the slide groove may be provided through the sleeve wall surface 20, a recess may be provided on the inner wall of the sleeve 20.

[0039]具体地,任一侧的滑动槽包括第一滑槽23和第二滑槽24,其中,所述第一滑槽23大致沿所述套管20的轴向方向延伸设置,所述第一滑槽23和第二滑槽24的端部相连通,且所述第一滑槽23和第二滑槽24之间具有夹角,所述夹角为钝角。 [0039] Specifically, on either side of the slide groove 23 includes a first chute and second chute 24, wherein said first chute 23 substantially in the axial direction of the sleeve 20 is extended, the end of the first chute 23 and the second chute 24 is communicated, and the angle between said first chute having a chute 23 and the second 24, the obtuse angle. 优选地,所述第一滑槽23和第二滑槽24进行平滑地连接,以方便所述滑块11在所述第一滑槽23和第二滑槽24之间进行滑动。 Preferably, the first chute 23 and the second chute 24 are smoothly connected to facilitate sliding of the slider 11 in the chute 23 between the first and second chutes 24. 优选地,所述滑块11可以为圆柱形的凸块结构,所述滑动槽为可供滑动块11在其中滑动的异形槽。 Preferably, the slide structure 11 may be a cylindrical protrusion, is available for the sliding groove 11 shaped groove in which the slider slides.

[0040]从而,需要穿刺时,所述穿刺尖端10的中心轴线与所述套管20的中心轴线相平行或重合,穿刺尖端10导引所述套管20进入到人体腹腔中。 [0040] Thus, if desired puncturing, piercing tip center axis of the center axis of the sleeve 20 is parallel or coincident, the piercing tip 10 of the guide sleeve 10 into the body 20 enters the abdominal cavity. 穿刺尖端10和套管20进入人体腹腔中后,当需要向人体腹腔中伸入吻合器或其他手术器械时,在外力作用下,滑块11沿所述第一滑槽23滑动至所述第二滑槽24中,并最终位于第二滑槽23的一端。 After the piercing tip 10 and sleeve 20 into the abdominal cavity of the body, extending into the stapler when it is necessary, or other surgical instrument into body cavities, the external force, the slider 11 slides along the first chute 23 to the first two chutes 24, and the final end of the second chute 23 is positioned. 由于所述第一滑槽23和第二滑槽24之间的夹角为钝角,所述穿刺尖端10旋转至所述套管20的一侧,从而打开所述套管20的端口,以方便吻合器或其他手术器械在患者体内进出。 Since the angle between the chute 23 and the second chute 24 to the first obtuse angle, the piercing tip 10 is rotated to the side of the sleeve 20 to open port 20 of the sleeve to facilitate anastomosis or other surgical instrument and out of the patient.

[0041 ]如图5所示,在其他实施方式中,为了实现穿刺套管20的双向旋转。 [0041] As shown in FIG. 5, in other embodiments, in order to achieve bidirectional rotation of the sleeve 20 of the puncture. 任一侧的滑动槽还包括第三滑槽25,其中,所述第三滑槽25与所述第一滑槽23和第二滑槽24相连通,且所述第三滑槽25与所述第二滑槽24对称设置,所述第三滑槽25与所述第二滑槽24的对称轴与所述第一滑槽23长度方向的中心线重合。 On either side of the slide groove further comprises a third slide 25, wherein the third chute 25 and the first chute 23 and the second chute 24 communicating, and the third chute 25 and the said second chute 24 disposed symmetrically, the third chute 25 and the centerline axis of symmetry 24 of the second chute with the first chute 23 coincides with the longitudinal direction. 优选地,所述第一滑槽23和第三滑槽25进行平滑地连接,以方便所述滑块11在所述第一滑槽23和第三滑槽25之间进行滑动。 Preferably, the first chute 23 and the third chute 25 is smoothly connected to the slider 11 to facilitate the sliding between the first chute 23 and the third chute 25.

[0042]如此设置,当需要向人体腹腔中伸入吻合器或其他手术器械时,医生可按手术需要,通过控制吻合器或其他手术器械施加给穿刺尖端10的外力的方向,将滑块11沿所述第一滑槽23滑动至所述第二滑槽24或者第三滑槽25中,此时,所述穿刺尖端10旋转至所述套管20的一侧,从而打开所述套管20的端口,以方便吻合器或其他手术器械的进入。 [0042] As provided, when necessary to extend into the stapler body abdominal cavity or other surgical instruments, the doctor may need surgery, the direction of the external force applied to the piercing tip 10 by controlling the stapler or other surgical instrument, the slider 11 23 sliding along the first slide to the second slide groove 24 or the third chute 25. in this case, the piercing tip 10 is rotated to the side of the sleeve 20, thereby opening the sleeve port 20 to facilitate entering the stapler or other surgical instrument.

[0043]当所述滑动槽同时包括第二滑槽24和第三滑槽25时,所述第二滑槽24和第三滑槽25之间具有夹角,所述夹角小于等于180°。 [0043] Meanwhile, when the slide grooves 24 and the second slot comprises a third chute 25, said chute having an included angle between the second 24 and the third chute 25, the angle is less than equal to 180 ° . 其中,所述夹角小于180°时,所述第二滑槽24和第三滑槽25之间具有凸起26,所述凸起26朝向所述第一滑槽23延伸设置。 Wherein said angle is less than 180 °, said chute having a projection 26 between the second 24 and the third chute 25, the projection 26 extending toward the first chute 23 is provided. 通过设置所述凸起26,能够限制滑块11在滑槽中发生移动,以避免穿刺尖端10在外力的作用下自行发生旋转。 By providing the projection 26, the slider 11 can be restricted from moving in the chute, to avoid puncturing tip 10 rotating under the action of external force itself. 优选地,所述凸起26的端部为弧形或直线型。 Preferably, the protruding end portion 26 is curved or straight. 所述夹角等于180°时,所述第二滑槽24和第三滑槽25之间平滑连接,二者之间不设置凸起26。 When the angle is equal to 180 °, between the second chute 24 and third chute 25 are smoothly connected, the projection 26 is not provided therebetween.

[0044]此外,在其他实施方式中,也可将所述滑动槽设置为一体结构,此时,所述滑动槽一体成型,且所述滑动槽为弧形槽,所述滑块11可自所述弧形槽的一端滑动至另一端。 [0044] Furthermore, in other embodiments, it may also be provided as a slide groove integral structure, this time, the slide groove integrally formed, and said sliding grooves are arcuate grooves, the slider 11 may be from One end of the arcuate slot to the other end of the slide. 从而,当所述滑块11位于所述弧形槽的一端时,所述穿刺尖端10的中心轴线与所述套管20的中心轴线相平行或重合,且所述套管20的所述另一端由所述穿刺尖端10闭合;当所述滑块11滑动至所述弧形槽的另一端时,所述穿刺尖端10的中心轴线与所述套管20的中心轴线之间具有夹角,且所述套管20的所述另一端由所述穿刺尖端10打开。 Thus, when the slider 11 is positioned at one end of the arcuate slot, the piercing of the central axis of the sleeve 20 relative to the central axis parallel or coincident, and the tip 10 of the cannula 20 is further 10 is closed by the tip end of the piercing; when the slider 11 is slid to the other end of the arcuate slot, the piercing tip 10 of the center axis of the sleeve having an angle between the center axis 20, the other end of the sleeve 20 and the piercing tip 10 is opened.

[0045]由于所述穿刺尖端的一端收容于所述套管20的另一端21中,从而,当所述穿刺尖端10相对所述套管20进行旋转时,穿刺尖端10和套管20之间会发生干涉。 [0045] Since the piercing tip end 21 of the other end 20 is received in the sleeve, so that, when the piercing tip 10 relative to the sleeve 20 rotates, the piercing tip 10 and the sleeve 20 interference will occur. 此处所称干涉是指两个或以上的零部件在发生运动时,由于相互抵碰而导致无法继续运动或者相互接触摩擦而产生的运动受限。 Referred to herein refers to two or more interference components in motion occurs, caused due to the mutual abutting contact with each other or not to continue the movement generated by the friction of movement is limited. 从而,为了避免干涉的产生,所述穿刺尖端10相对所述套管20旋转时,二者之间的干涉部分处均设置有凹陷结构30。 Therefore, in order to avoid interference, the piercing tip 10 relative to the rotation of the sleeve 20, an interference portion therebetween is provided with a recess structure 30. 如图1所示,通过设置所述凹陷结构30,避免了穿刺尖端10和套管20之间在相对运动时发生冲突,而导致穿刺尖端10无法打开。 1, by providing the recess structure 30, to avoid conflict between the piercing tip and the sleeve 2010 relative motion, caused by the piercing tip 10 can not be opened.

[0046] 所述穿刺尖端10的端部对称设置有延伸部12,所述延伸部12沿所述穿刺尖端10的轴向方向延伸设置,且所述滑块11位于所述延伸部12的外侧的壁面上。 End [0046] The piercing tip 10 is provided symmetrically extending portion 12, the extending portion 12 along the axial direction of the piercing tip 10 is extended, and the slider 11 are located outside of the extending portion 12 on the wall. 其中,优选地,所述延伸部12自所述穿刺尖端10上一体延伸而出,在其他实施方式中,所述延伸部12也可采用连接的方式设置于所述穿刺尖端10上。 Wherein, preferably, the extending portion 12 extends integrally from the piercing tip 10 out, in other embodiments, the extension portion 12 may also be provided to connect the tip 10 of the piercing.

[0047]如图6所示,此外,在吻合器或其他手术器械的作用下,为了使得穿刺尖端10能够顺利地旋转至所述套管20的一侧,所述穿刺尖端10的内部空间中设置有斜面13,所述斜面13的边缘与所述穿刺尖端10的内侧壁相连接,所述斜面13朝向所述穿刺尖端10的旋转方向倾斜设置,且所述斜面13靠近所述套管20的端口。 [0047] As shown in FIG. 6, in addition, under the action of stapler or other surgical instrument, in order to make the piercing tip 10 can be smoothly rotated to the inner space of the tip side 10 of the sleeve 20, the piercing 13 is provided with an inclined surface, the inclined surface 13 and the edge of the inner side wall of the piercing tip 10 is connected to the inclined surface 13 toward the rotational direction of the piercing tip 10 is inclined, and the inclined surface 13 near the sleeve 20 port. 如此,当吻合器或其他手术器械伸入套管20并与所述斜面相抵靠时,斜面13能够使得吻合器或其他手术器械施加的作用力分解出沿斜面13的分力,在该分力的作用下,能够实现穿刺尖端10的顺利旋转。 When so, when the stapler or other surgical instrument and extends into the sleeve 20 against the inclined surface against bevel 13 such that a force can be stapler or other surgical instrument component force applied along the inclined surface 13 decomposition of the component under the action can be achieved smooth rotation of the piercing tip 10.

[0048]如图7所述,上述实施方式中,所述斜面13可以为椭圆形。 [0048] As shown in Figure 7, the above-described embodiment, the ramp 13 may be elliptical. 此外,为了适应穿刺套管20的双向旋转,所述斜面13包括第一斜面和第二斜面,其中,所述第一斜面和第二斜面相交,所述套管20的轴线通过所述第一斜面和第二斜面之间的交线。 In addition, to accommodate bi-directional rotation of the puncture sleeve 20, the ramp 13 comprises a first inclined surface and a second inclined surface, wherein said first and second sloped faces intersecting the axis of the sleeve 20 through the first intersection between the inclined surface and the second inclined surface. 此时,所述第一斜面和第二斜面为半椭圆形。 At this time, the first and second sloped faces a semi-elliptical shape.

[0049]综上所述,本发明的无芯穿刺器使用方便,成本低廉,所述无芯穿刺器不具备传统穿刺器中的穿刺芯杆,其依靠穿刺尖端实现穿刺器的穿刺,且可在需要将吻合器或其他手术器械进入腹腔时,打开套管的端口,供吻合器或其他手术器械进入。 [0049] In summary, the present invention is a coreless puncture ease of use, low cost, the coreless piercer piercing the stem does not have a conventional trocar in which rely piercing tip trocar puncture implement, and may when needed the stapler or other surgical instruments into the abdominal cavity, the sleeve open port, or for another surgical stapling instrument access.

[0050]在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。 [0050] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed" and like terms are to be broadly understood, for example, may be a fixed connection, may be detachable connection, or integrally; may be a mechanical connector may be electrically connected; may be directly connected, can also be connected indirectly through intervening structures, it may be interaction between the two internal communicating elements or two elements, unless otherwise expressly limited. 对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。 Those of ordinary skill in the art, to be understood that the specific meanings in the present invention depending on the circumstances.

[0051]在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。 [0051] In the present invention, unless otherwise expressly specified or limited, the first feature in the "on" a second or "lower" may be in direct contact with the first and second characteristic or the first and second characteristics by intermediary indirect contact. 而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。 Also, the first feature a second feature in the "on", "above" and "upper" But first feature a second feature directly above or obliquely upward or simply represents a first characteristic level is higher than the height of the second feature. 第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。 In the first feature a second feature "beneath", "below" and "lower" may be just below the first feature or the second feature obliquely downward, or just less than the level represented by the first feature a second feature.

[0052]在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。 [0052] In the description of the present specification, reference to the term "one embodiment," "some embodiments", "an example", "a specific example", or "some examples" means that a description of the exemplary embodiment or embodiments described a particular feature, structure, material, or characteristic is included in at least one embodiment of the present invention, embodiments or examples. 在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。 In the present specification, a schematic representation of the above terms must not be the same for the embodiment or exemplary embodiments. 而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。 Furthermore, the particular features, structures, materials, or characteristics described may be in any one or more embodiments or examples combined in suitable manner. 此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。 Furthermore, different embodiments or examples and embodiments or features of different exemplary embodiments without conflicting, those skilled in the art described in this specification can be combined and the combination thereof.

[0053] 尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 [0053] Although the above has been illustrated and described embodiments of the present invention, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present invention, within the scope of the invention to those of ordinary skill in the art It may be variations of the above embodiments, modifications, alternatives, and modifications.

Claims (13)

  1. 1.一种无芯穿刺器,其特征在于,所述无芯穿刺器包括:穿刺尖端、套管组件以及密封组件; 所述套管组件包括套管,所述套管贯通设置,所述套管的一端由所述密封组件进行选择性密封,所述套管的另一端由所述穿刺尖端选择性打开或闭合,且所述穿刺尖端的一端收容于所述套管的所述另一端中,所述穿刺尖端以可旋转的方式连接于所述套管另一端的外侧壁面上。 A coreless trocar, characterized in that said coreless trocar comprising: a piercing tip, the cannula assembly and a seal assembly; said sleeve assembly comprising a sleeve disposed through said sleeve the other end of end of the tube is sealed by the sealing assembly selectively, the other end of the cannula piercing tip is selectively opened or closed, and the piercing tip end received in the cannula the piercing tip is rotatably connected to the outer sidewall surface of the other end of the sleeve.
  2. 2.根据权利要求1所述的无芯穿刺器,其特征在于,所述穿刺尖端具有第一位置和第二位置;所述穿刺芯尖端位于所述第一位置时,所述穿刺尖端的中心轴线与所述套管的中心轴线相平行或重合,且所述套管的所述另一端由所述穿刺尖端闭合;所述穿刺芯尖端位于所述第二位置时,所述穿刺尖端的中心轴线与所述套管的中心轴线之间具有夹角,且所述套管的所述另一端由所述穿刺尖端打开。 The coreless trocar according to claim 1, wherein said piercing tip having a first position and a second position; the piercing tip of the core in the first position when the piercing tip center the other end of the central axis of the sleeve axis is parallel or coincident, and the piercing tip of the cannula is closed; when the piercing tip of the core in the second position, the piercing tip center the other end of the angle between the axis and having a central axis of the sleeve, the sleeve and the piercing tip opening.
  3. 3.根据权利要求1所述的无芯穿刺器,其特征在于,所述套管的内侧壁上对称设置有滑动槽,所述穿刺尖端的外侧壁上对称设置有滑块,所述滑块可沿所述滑动槽滑动。 The coreless trocar according to claim 1, characterized in that the inner wall of the sleeve is provided with a slide groove symmetrically, the outer wall of the piercing tip symmetrically provided a slider sliding along the sliding groove.
  4. 4.根据权利要求3所述的无芯穿刺器,其特征在于,所述滑动槽包括第一滑槽和第二滑槽,所述第一滑槽大致沿所述套管的轴向方向延伸设置,所述第一滑槽和第二滑槽的端部相连通,且所述第一滑槽和第二滑槽之间具有夹角,所述夹角为钝角。 The coreless trocar according to claim 3, wherein said first chute comprises a sliding groove and a second chute, said first chute extending substantially in the axial direction along the sleeve provided, said first chute and second chute end in communication, and having an included angle between said first chute and second chute, said obtuse angle.
  5. 5.根据权利要求4所述的无芯穿刺器,其特征在于,所述滑动槽还包括第三滑槽,所述第三滑槽与所述第一滑槽和第二滑槽相连通,且所述第三滑槽与所述第二滑槽对称设置,所述第三滑槽与所述第二滑槽的对称轴与所述第一滑槽长度方向的中心线重合。 The coreless trocar according to claim 4, wherein said groove further comprises a third slide chute, a third chute with the first chute and second chute communicating, and the third sliding groove and the second sliding groove disposed symmetrically, the axis of symmetry of said second and third chute center line of the first chute and the chute coincides with the longitudinal direction.
  6. 6.根据权利要求5所述的无芯穿刺器,其特征在于,所述第二滑槽和第三滑槽之间具有夹角,所述夹角小于等于180°;所述夹角小于180°时,所述第二滑槽和第三滑槽之间具有凸起,所述凸起朝向所述第一凹槽延伸设置;所述夹角等于180°时,所述第二滑槽和第三滑槽之间平滑连接。 The coreless lancing device according to claim 5, characterized in that the included angle between said second and third chute chute, the angle is less than equal to 180 [deg.]; The angle is less than 180 °, between the second and third chute chute having a protrusion extending toward said first groove; when the angle is equal to 180 [°, and the second chute smoothly connected between the third chute.
  7. 7.根据权利要求6所述的无芯穿刺器,其特征在于,所述凸起的端部为弧形或直线型。 The coreless trocar according to claim 6, wherein an end portion of the convex arcuate or straight.
  8. 8.根据权利要求3所述的无芯穿刺器,其特征在于,所述滑动槽为弧形槽,所述滑块可自所述弧形槽的一端滑动至另一端,所述滑块位于所述弧形槽的一端时,所述穿刺尖端的中心轴线与所述套管的中心轴线相平行或重合,且所述套管的所述另一端由所述穿刺尖端闭合;所述滑块滑动至所述弧形槽的另一端时,所述穿刺尖端的中心轴线与所述套管的中心轴线之间具有夹角,且所述套管的所述另一端由所述穿刺尖端打开。 The coreless trocar according to claim 3, wherein said slide groove is arc-shaped groove of the slider from one end of the arcuate slot may be slid to the other end, the slider is located when the end of the arcuate groove, the central axis of the piercing tip and the other end parallel to the central axis of the ferrule or overlap, and the piercing tip of the cannula is closed; said slider slides to the other end of the arcuate groove, said piercing tip having an included angle between the central axis of the central axis of the sleeve, the sleeve and the other end opening of said piercing tip.
  9. 9.根据权利要求3所述的无芯穿刺器,其特征在于,所述穿刺尖端的端部对称设置有延伸部,所述滑块位于所述延伸部的外侧壁上。 9. The coreless trocar according to claim 3, wherein the piercing tip end portion is provided symmetrically extending portion of the slider is located outside of the wall of the extending portion.
  10. 10.根据权利要求1所述的无芯穿刺器,其特征在于,所述穿刺尖端的内侧壁上设置有台阶部。 10. The coreless trocar according to claim 1, wherein the piercing tip is provided with a stepped inner side wall portion.
  11. 11.根据权利要求1或10所述的无芯穿刺器,其特征在于,所述穿刺尖端和所述套管均设置有凹陷结构,防止两者相互运动时产生干涉。 11. The coreless trocar of claim 1 or claim 10, wherein the piercing tip and the sleeve is provided with a recess structure to prevent interference with each other when both the motion.
  12. 12.根据权利要求1所述的无芯穿刺器,其特征在于,所述穿刺尖端的内部空间中设置有斜面,所述斜面的边缘与所述穿刺尖端的内侧壁相连接,所述斜面朝向所述穿刺尖端的旋转方向倾斜设置,且所述斜面靠近所述套管的所述另一端。 12. The coreless trocar according to claim 1, wherein the piercing tip is provided in the inner space of a bevel edge of the inner side wall is connected to the piercing tip, the ramp toward the piercing tip inclined in the rotational direction, and the other end adjacent said inclined surface of said sleeve.
  13. 13.根据权利要求12所述的无芯穿刺器,其特征在于,所述斜面为椭圆形,或者,所述斜面包括第一斜面和第二斜面,所述第一斜面和第二斜面相交,所述套管的轴线通过所述第一斜面和第二斜面之间的交线,所述第一斜面和第二斜面均为半椭圆形。 13. The coreless trocar according to claim 12, wherein said inclined surface is elliptical, or the ramp comprises first and second sloped faces, the first and second sloped faces intersect, axis of the sleeve by the intersection between the first and second sloped faces, the first and second sloped faces are semi-oval.
CN 201610878843 2016-10-08 2016-10-08 Core-free puncturing device CN106333733A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279575A (en) * 1992-08-13 1994-01-18 Brigham & Women's Hospital Locking pivotal surgical orifice
US20020169362A1 (en) * 1999-03-18 2002-11-14 Kazutoshi Kan Operating instrument insertion apparatus and operation supporting apparatus
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