WO2022134625A1 - 超声手术刀的刀杆组件 - Google Patents

超声手术刀的刀杆组件 Download PDF

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Publication number
WO2022134625A1
WO2022134625A1 PCT/CN2021/113150 CN2021113150W WO2022134625A1 WO 2022134625 A1 WO2022134625 A1 WO 2022134625A1 CN 2021113150 W CN2021113150 W CN 2021113150W WO 2022134625 A1 WO2022134625 A1 WO 2022134625A1
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WO
WIPO (PCT)
Prior art keywords
inner tube
support ring
cutter bar
support body
support
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Application number
PCT/CN2021/113150
Other languages
English (en)
French (fr)
Inventor
张文良
吴香璐
马绩珍
陈倩
虞健娇
Original Assignee
上海圣哲医疗科技有限公司
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Application filed by 上海圣哲医疗科技有限公司 filed Critical 上海圣哲医疗科技有限公司
Priority to EP21908630.3A priority Critical patent/EP4265205A1/en
Publication of WO2022134625A1 publication Critical patent/WO2022134625A1/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
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072—Working tips with special features, e.g. extending parts
    • A61B2017/320074—Working tips with special features, e.g. extending parts blade
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320082—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for incising tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320088—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with acoustic insulation, e.g. elements for damping vibrations between horn and surrounding sheath

Definitions

  • the present application relates to the technical field of medical devices, for example, to a blade bar assembly of an ultrasonic scalpel.
  • the ultrasonic scalpel is widely used in clinical operations due to its advantages of less bleeding and less damage to surrounding tissues.
  • the support ring is attached to the inner wall of the outer sleeve, which is easy to increase the resistance of the tool bar, which makes the tool bar easy to heat up during the working process, which affects the normal use of the tool bar assembly;
  • the support ring is integrally formed on the tool bar by injection molding, during the processing process It is easy to overflow glue, and it is easy to scratch the surface of the tool bar during the process of cleaning the overflow glue, which makes the vibration frequency of the tool bar change.
  • the present application provides a blade rod assembly of an ultrasonic scalpel, which can solve the problems of increased impedance and glue overflow caused by the support ring being arranged on the blade rod.
  • the present application provides a cutter bar assembly of an ultrasonic scalpel, comprising: a cutter bar; an inner tube, the inner tube is sleeved outside the cutter bar; a support ring, the support ring includes a first support body, the first support body A support body is arranged on the inner wall of the inner tube, and the first support body is protruded with a first protrusion in a direction away from the inner tube until it abuts with the cutter bar.
  • the support ring further includes: a second support body, the second support body is arranged on the outer wall of the inner tube; a connecting piece, the inner tube is provided with a through hole, The connecting piece is arranged in the through hole, and the connecting piece connects the first support body and the second support body.
  • the first support body, the connecting piece and the second support body are of an integrated structure.
  • the through holes are provided with a plurality of through holes, and the plurality of through holes are evenly distributed along the circumferential direction of the inner tube.
  • the support ring is integrally formed on the inner tube by means of injection molding.
  • the material of the support ring is silicone rubber.
  • the cutter bar assembly further includes an outer tube, the outer tube is sleeved outside the inner tube, and the second support body is in clearance fit with the outer tube.
  • the first protrusion is an annular protrusion.
  • the two support rings are respectively a first support ring and a second support ring, and the first support ring is provided at the head of the inner tube.
  • the second support ring is arranged at the rear end of the inner tube.
  • At least one of the first support ring and the second support ring is provided with an annular second protrusion, and the second protrusion is provided on the first support ring and the second support ring.
  • At least one of the two support rings is on the outer wall of the second support body, and extends in a direction away from the inner tube until it abuts against the inner wall of the outer tube.
  • the cutter bar assembly As an optional solution of the cutter bar assembly, the cutter bar, the inner tube and the support ring are arranged concentrically.
  • FIG. 1 is a cross-sectional view of a cutter bar assembly in an embodiment of the application
  • Fig. 2 is the partial enlarged view of A place in Fig. 1;
  • Fig. 3 is a partial enlarged view at B in Fig. 1;
  • FIG. 4 is a schematic structural diagram of a first support ring in an embodiment of the application.
  • FIG. 5 is a schematic structural diagram of an inner tube in an embodiment of the application.
  • Fig. 6 is the partial enlarged view of C place in Fig. 5;
  • FIG. 7 is a partial enlarged view of D in FIG. 5 .
  • Tool holder 2. Inner tube; 3. Support ring; 4. Outer tube;
  • the first support ring 311, the first support body; 3111, the first protrusion; 312, the second support body; 3121, the second protrusion; 313, the connecting piece; 32, the second support ring.
  • the terms “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer”, etc. indicate the orientation or positional relationship based on the attached
  • the orientation or positional relationship shown in the figure, or the orientation or positional relationship that the product of the application is usually placed in use, is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the tool table or element referred to must have The particular orientation, construction and operation in the particular orientation are therefore not to be construed as limitations of the present application.
  • the terms “first”, “second”, “third”, etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.
  • “plurality” means two or more.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a A mechanical connection can also be an electrical connection.
  • connection should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a A mechanical connection can also be an electrical connection.
  • a first feature "on” or “under” a second feature may include direct contact between the first feature and the second feature, or may include the first feature and the second feature.
  • the two features are not in direct contact but are in contact through an additional feature between the first feature and the second feature.
  • the first feature is “above”, “above” and “above” the second feature includes the first feature is directly above and diagonally above the second feature, or simply means that the level of the first feature is higher than the level of the second feature high.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the level of the first feature is less than the level of the second feature .
  • the present embodiment provides a cutter bar assembly of an ultrasonic scalpel, the cutter bar assembly includes a cutter bar 1, an inner tube 2 and a support ring 3, and the inner tube 2 is sleeved outside the cutter bar 1;
  • the support ring 3 includes a first support body 311 .
  • the first support body 311 is arranged on the inner wall of the inner tube 2 .
  • the first support body 311 protrudes from the direction away from the inner tube 2 with a first protrusion 3111 . It is in contact with the cutter bar 1 , and further plays the role of supporting the cutter bar 1 in the inner tube 2 .
  • the support ring 3 is provided on the inner tube 2 and the first protrusion 3111 is protruded on the support ring 3, which not only plays the role of supporting the cutter bar 1, but also avoids the contact between the support ring 3 and the cutter bar 1.
  • the large-area contact between them reduces the impedance of the cutter bar 1, reduces the loss of the cutter bar assembly during the energy conversion process, and avoids the overheating of the cutter bar 1 and affects the normal use;
  • the surface of the tool is worn, resulting in a change in the operating frequency of the tool holder 1.
  • the support ring 3 further includes a second support body 312 and a connecting piece 313, the second support body 312 is provided on the outer wall of the inner tube 2; the inner tube 2 is provided with a through hole 21 , the connecting piece 313 is arranged in the through hole 21 , and the connecting piece 313 connects the first support body 311 and the second support body 312 .
  • the arrangement of the connecting piece 313 in the through hole 21 realizes the positioning of the support ring 3 on the inner tube 2, and the arrangement of the second support body 312 increases the adhesion of the support ring 3 as a whole to the inner tube 2, so that the support ring 3 It is more difficult to get out of the inner tube 2 .
  • the first support body 311 , the connector 313 and the second support body 312 are integrated into a single structure, so as to avoid the dislocation of the first support body 311 and the second support body 312 when the combined structure is adopted, thereby reducing the support ring 3 . reliability.
  • the support ring 3 is integrally formed on the inner tube 2 by injection molding, which not only facilitates the assembly of the support ring 3 and the inner tube 2, but also improves the integrity of the support ring 3 and the inner tube 2.
  • the through hole 21 Become a flow channel for molten material.
  • an adhesive coating is provided on the contact surface of the support ring 3 and the inner tube 2 to enhance the adhesion between the support ring 3 and the inner tube 2 .
  • a plurality of through holes 21 are provided, and the plurality of through holes 21 are evenly distributed along the circumferential direction of the inner tube 2 , and the molten material can be injected into the plurality of through holes 21 synchronously, saving the support ring 3 on the inner tube 2 .
  • the processing time is shortened, and the injection molding efficiency of the support ring 3 is improved.
  • the material of the support ring is silicone rubber, which can provide better adhesion performance and shock resistance, and improve the fatigue resistance and aging resistance of the support ring.
  • there are two support rings 3 which are a first support ring 31 and a second support ring 32 respectively.
  • the contact surface of the first support ring 31 and the inner tube 2 is provided with There are three strip-shaped through holes, and four cylindrical through holes are provided on the contact surface between the second support ring 32 and the inner tube 2 .
  • the injection molding efficiency of the support ring 3 is related to the number and cross-sectional area of the through holes 21 . The greater the number of through holes 21 and the larger the cross-sectional area, the higher the injection molding efficiency of the support ring 3 .
  • the first protrusion 3111 is an annular protrusion to achieve a sealed connection between the inner tube 2 and the cutter bar 1, so as to avoid blood from the inner tube 2 and the cutter bar when the cutter bar assembly is working.
  • the cutter bar assembly further includes an outer tube 4, the outer tube 4 is sleeved outside the inner tube 2, and the second support body 312 is in clearance fit with the outer tube 4, so as to allow the cutter The rod 1 is inserted into the ample space of the inner tube 2.
  • the support ring 3 is injected on the inner tube 2, the outer tube 4 is sleeved on the inner tube 2, and finally the cutter bar 1 is inserted into the inner tube 2, so as to realize the assembly of the cutter bar assembly.
  • the first protrusion 3111 causes the cutter bar 1 to press the support ring 3 to offset the outer tube 4, the clearance fit between the second support body 312 and the outer tube 4 can leave a space for the cutter bar 1 to enter, which is convenient for the cutter bar 1 to enter.
  • first support ring 31 is provided at the head end of the inner tube 2
  • second support ring 32 is provided at the inner tube 2 .
  • the first support ring 31 and the second support ring 32 guide the installation of the cutter bar 1 .
  • At least one of the first support ring 31 and the second support ring 32 is provided with an annular second protrusion 3121
  • the second protrusion 3121 is provided on the first support ring 31 and the second support ring 32 At least one of them is on the outer wall of the second support body 312 and extends away from the inner tube 2 until it abuts against the inner wall of the outer tube 4 to achieve sealing between the inner tube 2 and the outer tube 4 .
  • the sealing between the inner tube 2 and the outer tube 4 not only enables the knife bar assembly and the patient to form a closed space in order to avoid the leakage of drug gas, but also further avoids the backflow of the patient's blood during the operation.
  • the second support body 312 of the first support ring 31 is provided with a second protrusion 3121, and the second support body 312 of the second support ring 32 is in clearance fit with the outer tube 4 to facilitate the insertion of the cutter bar 1 into the inside.
  • the pipe 2 also realizes the sealing between the cutter bar 1 and the outer pipe 4 .
  • the cutter bar 1, the inner tube 2 and the support ring 3 are arranged coaxially, so that the structure of the cutter bar assembly is reasonable.
  • the contact between the first protrusion 3111 and the cutter bar 1 is a line contact, which further reduces the impedance of the cutter bar 1 .

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Dentistry (AREA)
  • Medical Informatics (AREA)
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  • Animal Behavior & Ethology (AREA)
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Abstract

公开了一种超声手术刀的刀杆组件，刀杆组件包括刀杆(1)、内管(2)和支撑环(3)；内管(2)套设于刀杆(1)外；支撑环(3)包括第一支撑体(311)，第一支撑体(311)设于内管(2)的内壁上，第一支撑体(311)向远离内管(2)的方向凸设有第一凸起(3111)，第一凸起(3111)直至与刀杆(1)抵接。该刀杆组件减少了刀杆(1)的阻抗，降低了刀杆组件在能量转化过程中的损耗，避免了刀杆(1)过热而影响正常使用；同时避免了因清理溢胶而使得刀杆(1)的表面发生磨损，从而导致刀杆(1)的工作频率发生改变。

Description

超声手术刀的刀杆组件
本申请要求在2020年12月21日提交中国专利局、申请号为202011519135.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及医疗器械技术领域，例如涉及一种超声手术刀的刀杆组件。
背景技术
超声手术刀由于出血少、对周围组织伤害少等优点，广泛应用于临床手术中，超声手术刀的普通的刀杆组件依靠设置在刀杆上的支撑环将刀杆支撑于外套管的内部，支撑环贴设于外套管的内壁上，容易增加刀杆的阻抗，使得刀杆在工作过程容易发热，影响刀杆组件的正常使用；支撑环在刀杆上通过注塑一体成型，在加工过程中容易溢胶，在清理溢胶的过程中容易划伤刀杆的表面，使得刀杆的振动频率发生改变。
发明内容
本申请提供一种超声手术刀的刀杆组件，能够解决支撑环设置在刀杆上引起的增加阻抗和溢胶的问题。
本申请提供一种超声手术刀的刀杆组件，包括：刀杆；内管，所述内管套设于所述刀杆外；支撑环，所述支撑环包括第一支撑体，所述第一支撑体设于所述内管的内壁上，所述第一支撑体向远离所述内管的方向凸设有第一凸起，直至与所述刀杆抵接。
作为刀杆组件的可选方案，所述支撑环还包括：第二支撑体，所述第二支撑体设于所述内管的外壁上；连接件，所述内管上设有通孔，所述连接件设于所述通孔内，连接件连接所述第一支撑体和所述第二支撑体。
作为刀杆组件的可选方案，所述第一支撑体、所述连接件和所述第二支撑体为一体式结构。
作为刀杆组件的可选方案，所述通孔设有多个，多个通孔沿所述内管的周向均匀分布。
作为刀杆组件的可选方案，所述支撑环通过注塑的方式一体成型于所述内管上。
作为刀杆组件的可选方案，所述支撑环的材料为硅橡胶。
作为刀杆组件的可选方案，所述刀杆组件还包括外管，所述外管套设于所述内管外，所述第二支撑体与所述外管间隙配合。
作为刀杆组件的可选方案，所述第一凸起为环形凸起。
作为刀杆组件的可选方案，所述支撑环设有两个，所述两个支撑环分别为第一支撑环和第二支撑环，所述第一支撑环设于所述内管的首端，所述第二支撑环设于所述内管的尾端。
作为刀杆组件的可选方案，所述第一支撑环和所述第二支撑环中的至少一个上设有环形的第二凸起，所述第二凸起设于第一支撑环和第二支撑环中的至少一个的所述第二支撑体的外壁上，并向远离所述内管的方向延伸，直至与所述外管的内壁抵接。
作为刀杆组件的可选方案，所述刀杆、所述内管与所述支撑环同轴心设置。
附图说明
图1为本申请实施例中的刀杆组件的剖视图；
图2为图1中A处的局部放大图；
图3为图1中B处的局部放大图；
图4为本申请实施例中的第一支撑环的结构示意图；
图5为本申请实施例中的内管的结构示意图；
图6为图5中C处的局部放大图；
图7为图5中D处的局部放大图。
附图标记：
1、刀杆；2、内管；3、支撑环；4、外管；
21、通孔；
31、第一支撑环；311、第一支撑体；3111、第一凸起；312、第二支撑体；3121、第二凸起；313、连接件；32、第二支撑环。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，所描述的实施例是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以多种不同的配置来布置和设 计。
以下对在附图中提供的本申请的实施例的描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。
相似的标号和字母在下面的附图中表示类似项，因此，一旦一项标号和字母在一个附图中被定义，则在随后的附图中不需要对相似的标号和字母进行定义和解释。
在本申请的描述中，术语“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”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，或者是该申请产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的工具台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申请的限制。术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本申请的描述中，除非另有明确的规定和限定，术语“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是直接接触而是通过第一特征和第二特征之间的另外的特征接触。第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征的正上方和斜上方，或仅仅表示第一特征的水平高度高于第二特征的水平高度。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征的正下方和斜下方，或仅仅表示第一特征的水平高度小于第二特征的水平高度。
下面描述本申请的实施例，所述实施例的示例在附图中示出，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。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
如图1-7所示，本实施例提供一种超声手术刀的刀杆组件，该刀杆组件包括刀杆1、内管2和支撑环3，内管2套设于刀杆1外；支撑环3包括第一支撑体311，第一支撑体311设于内管2的内壁上，第一支撑体311向远离内管2的方向凸设有第一凸起3111，第一凸起3111与刀杆1抵接，进而起到在内管2内支 撑刀杆1的作用。
本实施例通过在内管2上设置支撑环3并在支撑环3上凸设有第一凸起3111，起到支撑刀杆1的作用的同时，还能避免支撑环3与刀杆1之间的大面积接触，减少了刀杆1的阻抗，降低了刀杆组件在能量转化过程中的损耗，避免了刀杆1过热而影响正常使用；同时避免了因清理溢胶而使得刀杆1的表面发生磨损，从而导致刀杆1的工作频率发生改变。
结合图2-4，在本实施例中，支撑环3还包括第二支撑体312和连接件313，第二支撑体312设于内管2的外壁上；内管2上设有通孔21，连接件313设于通孔21内，连接件313连接第一支撑体311和第二支撑体312。通孔21内的连接件313的设置实现了支撑环3在内管2上的定位，第二支撑体312的设置则增加了支撑环3整体与内管2的贴附性，使得支撑环3更不容易脱离内管2。可选地，第一支撑体311、连接件313和第二支撑体312为一体式结构，避免采用组合式结构时发生第一支撑体311与第二支撑体312的装配错位而降低支撑环3的可靠性。可选地，支撑环3通过注塑的方式一体成型于内管2上，既方便支撑环3与内管2的装配，还能提高支撑环3与内管2的整体性，此时通孔21成为熔融材料的流动通道。可选地，支撑环3与内管2的接触面上设有粘性涂层，加强支撑环3与内管2之间的贴附性。可选地，通孔21设有多个，多个通孔21沿内管2的周向均匀分布，可以在多个通孔21内同步注入熔融材料，节省了支撑环3在内管2上的加工时间，提高了支撑环3的注塑成型效率。可选地，支撑环的材料为硅橡胶，硅橡胶可以提供较好的附着性能和抗震性能，提高支撑环的抗疲劳性和抗老化性。如图5-7所示，在本实施例中，支撑环3设有两个，分别为第一支撑环31和第二支撑环32，第一支撑环31与内管2的接触面上设有三个条形通孔，第二支撑环32与内管2的接触面上设有四个圆柱形通孔。支撑环3的注塑成型效率与通孔21的数目和截面面积有关，通孔21的数目越多、截面面积越大，支撑环3的注塑成型效率越高。
如图4所示，可选地，第一凸起3111为环形凸起，以实现内管2与刀杆1之间的密封连接，避免在刀杆组件工作时，血液从内管2与刀杆1之间回流。如图2-3所示，可选地，刀杆组件还包括外管4，外管4套设于内管2外，第二支撑体312与外管4间隙配合，以留出可以使刀杆1插入内管2的充足空间。通过在内管2上注塑有支撑环3，在内管2上套设外管4，最后将刀杆1插入内管2，以实现刀杆组件的装配。在装配时，由于第一凸起3111使得刀杆1挤压支撑环3向外管4偏移，第二支撑体312与外管4间隙配合可以留出使刀杆1进入的空间，便于刀杆1的安装，待刀杆1安装到位后，支撑环3上的第一凸起3111与刀杆1形成密封连接，以实现支撑环3对刀杆1的支撑和刀杆1与内管2之间的密封。可选地，支撑环3设有两个，分别为第一支撑环31和第二支 撑环32，第一支撑环31设于内管2的首端，第二支撑环32设于内管2的尾端，第一支撑环31和第二支撑环32对刀杆1的安装进行导向。可选地，第一支撑环31与第二支撑环32中的至少一个上设有环形的第二凸起3121，第二凸起3121设于所述第一支撑环31与第二支撑环32中的至少一个的第二支撑体312的外壁上，并向远离内管2的方向延伸，直至与外管4的内壁抵接，以实现内管2与外管4之间的密封。内管2与外管4之间的密封不仅使得刀杆组件与患者体内形成密闭的空间，以免药物气体泄漏，还进一步避免了在进行手术时，患者的血液回流。在本实施例中，第一支撑环31的第二支撑体312上设有第二凸起3121，第二支撑环32的第二支撑体312与外管4间隙配合，便于刀杆1插入内管2的同时还实现了刀杆1与外管4之间的密封。
刀杆1、内管2与支撑环3呈同轴心设置，以使刀杆组件的结构合理。可选地，第一凸起3111与刀杆1的接触为线接触，进一步减小了刀杆1的阻抗。

Claims (11)

  1. 一种超声手术刀的刀杆组件，包括：
    刀杆(1)；
    内管(2)，所述内管(2)套设于所述刀杆(1)外；
    支撑环(3)，所述支撑环(3)包括第一支撑体(311)，所述第一支撑体(311)设于所述内管(2)的内壁上，所述第一支撑体(311)向远离所述内管(2)的方向凸设有第一凸起(3111)，所述第一凸起(3111)与所述刀杆(1)抵接。
  2. 根据权利要求1所述的刀杆组件，其中，所述支撑环(3)还包括：
    第二支撑体(312)，所述第二支撑体(312)设于所述内管(2)的外壁上；
    连接件(313)，所述内管(2)上设有通孔(21)，所述连接件(313)设于所述通孔(21)内，所述连接件(313)连接所述第一支撑体(311)和所述第二支撑体(312)。
  3. 根据权利要求2所述的刀杆组件，其中，所述第一支撑体(311)、所述连接件(313)和所述第二支撑体(312)为一体式结构。
  4. 根据权利要求2所述的刀杆组件，其中，所述通孔(21)设有多个，所述多个通孔(21)沿所述内管(2)的周向均匀分布。
  5. 根据权利要求3所述的刀杆组件，其中，所述支撑环(3)通过注塑的方式一体成型于所述内管(2)上。
  6. 根据权利要求3所述的刀杆组件，其中，所述支撑环(3)的材料为硅橡胶。
  7. 根据权利要求2所述的刀杆组件，还包括：外管(4)，所述外管(4)套设于所述内管(2)外，所述第二支撑体(312)与所述外管(4)间隙配合。
  8. 根据权利要求1所述的刀杆组件，其中，所述第一凸起(3111)为环形凸起。
  9. 根据权利要求7所述的刀杆组件，其中，所述支撑环(3)设有两个，所述两个支撑环分别为第一支撑环(31)和第二支撑环(32)，所述第一支撑环(31)设于所述内管(2)的首端，所述第二支撑环(32)设于所述内管(2)的尾端。
  10. 根据权利要求9所述的刀杆组件，其中，所述第一支撑环(31)和所述第二支撑环(32)中的至少一个上设有环形的第二凸起(3121)，所述第二凸起(3121)设于所述第一支撑环(31)和所述第二支撑环(32)中的至少一个的第二支撑体(312)的外壁上，并向远离所述内管(2)的方向延伸，直至与所述外管(4)的内壁抵接。
  11. 根据权利要求1所述的刀杆组件，其中，所述刀杆(1)、所述内管(2)与所述支撑环(3)同轴心设置。
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