WO2023045043A1 - 一种医用管 - Google Patents

一种医用管 Download PDF

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Publication number
WO2023045043A1
WO2023045043A1 PCT/CN2021/129262 CN2021129262W WO2023045043A1 WO 2023045043 A1 WO2023045043 A1 WO 2023045043A1 CN 2021129262 W CN2021129262 W CN 2021129262W WO 2023045043 A1 WO2023045043 A1 WO 2023045043A1
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WIPO (PCT)
Prior art keywords
inner tube
tube
flexible
braided
medical
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PCT/CN2021/129262
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English (en)
French (fr)
Inventor
孙光宇
吴衍
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Hydro Caresys Huizhou Medical Co Ltd
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Hydro Caresys Huizhou Medical Co Ltd
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Application filed by Hydro Caresys Huizhou Medical Co Ltd filed Critical Hydro Caresys Huizhou Medical Co Ltd
Priority to EP21958156.8A priority Critical patent/EP4393534A4/en
Publication of WO2023045043A1 publication Critical patent/WO2023045043A1/zh
Priority to US18/616,271 priority patent/US20240229981A1/en
Anticipated expiration legal-status Critical
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • A61M25/0012—Making of catheters or other medical or surgical tubes with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils

Definitions

  • the present application relates to the technical field of medical equipment, in particular to a medical tube.
  • One object of the present application is to provide a medical tube with good flexibility and bending resistance, and high pressure resistance.
  • a medical tube comprising:
  • the inner tube is a flexible tube, and the ratio of the wall thickness of the inner tube to the inner diameter of the inner tube is in the range of 0.1 to 10;
  • One or more braided layers stacked sequentially from the inside to the outside, the braided layer is arranged on the outer periphery of the inner tube, the braided layer includes one or more staggered and laminated flexible braided wire bundles, the flexible The wire diameter of the braided wire harness is 0.01 to 10 mm.
  • the medical tube further includes:
  • a covering layer is arranged on the outside of the braiding layer, and the material of the covering layer is PVC or polyurethane or PP or nylon or rubber or silica gel.
  • the braided layer includes at least two flexible braided wire bundles interlaced and laminated in a grid.
  • each of the flexible braided wire harnesses forms an angle of 1°-89° with the axial direction of the inner tube.
  • each of the flexible braided wire harnesses forms an angle of 40°-50° with the axial direction of the inner tube.
  • two types of flexible braided wire harnesses are included, and the two types of flexible braided wire harnesses respectively extend toward opposite axial sides of the inner tube.
  • the wire diameter of the flexible braided wire harness is 0.5-1.5 mm.
  • the ratio of the wall thickness of the inner tube to the inner diameter of the inner tube ranges from 0.5 to 2.
  • the wall thickness of the inner tube is 0.5 mm to 1.5 mm, and the inner diameter of the inner tube is 1 mm to 1.5 mm.
  • the material of the inner tube is PVC or polyurethane or pp or nylon or rubber or silicone.
  • the flexible braided wire harness is stainless steel wire, nylon wire or Kevlar.
  • the medical tube of the present application includes an inner tube and a braided layer arranged on the outer periphery of the inner tube, and the inner tube is made of a flexible tube, and the braided layer is braided by a flexible braided wire harness, so as to ensure the flexibility and bending resistance of the pipeline; in addition , by reasonably setting the wall thickness and inner diameter of the inner pipe, and selecting a flexible braided wire harness with a reasonable wire diameter to weave the braiding layer, the maximum mechanical strength that the pipeline can withstand can be effectively improved.
  • Fig. 1 is a schematic structural view of a medical tube according to some embodiments of the present application.
  • Fig. 2 is a schematic structural diagram of a medical tube according to some embodiments of the present application.
  • inner tube 20 braided layer; 21, flexible braided wire harness; 30, wrapping layer.
  • top, bottom, upward, and downward mentioned in this article are defined relative to the directions in each drawing, and they are relative concepts, and therefore can be It changes in different positions and different practical states. Accordingly, these or other orientations should not be construed as limiting terms.
  • first and second are used herein to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other.
  • first information may also be referred to as “second” information without departing from the scope of the present application, and similarly, “second” information may also be referred to as “first” information.
  • a kind of medical tube of the embodiment of the present application it comprises: inner tube 10 and the braided layer 20 that is arranged on the outer periphery of inner tube 10;
  • the ratio of the inner diameter of 10 is in the range of 0.1 to 10, and the braided layer 20 is provided with one layer or multiple layers stacked sequentially from the inside to the outside.
  • 21 has a wire diameter of 0.01 to 10 mm.
  • the inner tube 10 is a flexible tube
  • the braided layer 20 is braided by a flexible braided wire harness 21, so as to ensure the overall flexibility and bending resistance of the medical tube
  • the medical tube uses the inner tube 10 Combining with the braided layer 20, and by reasonably setting the wall thickness and inner diameter of the inner tube 10, and selecting a flexible braided wire harness 21 with a reasonable wire diameter to weave the braided layer 20, the ability to withstand the liquid pressure of the pipeline can be effectively improved.
  • the pressure strength range of medical pipes is 0.01MPa ⁇ 500Mpa.
  • the braided layer 20 includes at least two flexible braided wire bundles 21 interleaved and laminated in a grid shape, as shown in Fig. 1; this braided form can ensure the pressure bearing capacity.
  • two types of flexible braided wire harnesses 21 are provided, wherein the braiding direction angle between one type of flexible braided wire harness 21 and the axial direction of the inner tube 10 is ⁇ , and the other type of flexible braided wire harness 21
  • the braiding direction angle between the wire harness 21 and the axial direction of the inner tube 10 is ⁇ ; and ⁇ and ⁇ can be equal or different; for example, both ⁇ and ⁇ are 1° to 89°, and by controlling the braiding direction The corners redirect the force to optimize the compressive strength.
  • both ⁇ and ⁇ are preferably 40°-50°, that is, the angle between the two types of flexible braided wire bundles 21 is 80°-100°.
  • ⁇ and ⁇ in each braided layer 20 may be set to be the same or different, which is not limited here.
  • the wire diameter of the flexible braided wire harness 21 in this embodiment may be 0.5-1.5 mm.
  • the ratio of the wall thickness of the inner tube 10 to the inner diameter of the inner tube 10 ranges from 0.5 to 2, and the compressive strength of the pipeline can be effectively improved by increasing the wall thickness of the inner tube 10;
  • the inner diameter of the tube 10 is 1 mm to 1.5 mm, and the wall thickness of the inner tube 10 is 0.5 mm to 1.5 mm.
  • the inner tube 10 is made of high-strength soft metal or non-metallic material.
  • the material of the inner tube 10 is any one of PVC, polyurethane, pp, nylon, rubber or silicone.
  • the material of the braided wire harness can be soft metal or non-metal; for example, in some embodiments of the present application, the flexible braided wire harness 21 is made of stainless steel wire, nylon wire or Any of Kevlar.
  • the medical tube of the embodiment of the present application includes an inner tube 10 and a braided layer 20 disposed on the outer periphery of the inner tube 10, and the inner tube 10 is a flexible tube, and the braided layer 20 is braided by a flexible braided wire harness 21, so that it can Ensure the flexibility and bending resistance of the pipeline; in addition, by reasonably setting the wall thickness and inner diameter of the inner tube 10, and selecting a flexible braided wire harness 21 with a reasonable wire diameter to prepare the braided layer 20, the maximum mechanical capacity that the pipeline can withstand can be effectively improved. strength.
  • this embodiment provides a medical tube, the only difference between it and the first embodiment is that the medical tube in this embodiment also includes: a coating layer 30, the coating layer 30 is arranged on the braided layer 20 The outer side, and the material of the cladding layer 30 is any one of PVC, polyurethane, PP, nylon, rubber, and silica gel.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Mechanical Engineering (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Materials For Medical Uses (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

一种医用管，其包括：内管（10），该内管（10）为柔性管，该内管（10）的壁厚与该内管（10）的内径的比值范围为0.1～10；一层或多层从内至外依次叠设的编织层（20），该编织层（20）设于该内管（10）的外周，该编织层（20）包括一根或多根交错叠压的柔性编织线束（21），该柔性编织线束（21）的线径为0.01～10㎜。该医用管既能保证管路的承压能力，又能提高管路的柔性及耐折性。

Description

一种医用管 技术领域
本申请涉及医用器材技术领域，特别是涉及一种医用管。
背景技术
现有的医用编织管存在耐高压性较差、抗折性不强、柔性不足等问题，且不便于操作；而在现代医疗技术中，特别是用于液体输送的导管，对耐压性有更严格的要求，且同时要求具有一定的柔性及抗折性。
实用新型内容
本申请的一个目的在于提供一种医用管，其具有良好的柔性及抗折性，并具有高耐压性。
本申请的目的是通过如下技术方案实现的：
一种医用管，其包括：
内管，所述内管为柔性管，所述内管的壁厚与所述内管的内径的比值范围为0.1～10；
一层或多层从内至外依次叠设的编织层，所述编织层设于所述内管的外周，所述编织层包括一根或多根交错叠压的柔性编织线束，所述柔性编织线束的线径为0.01～10㎜。
本申请一些实施例中，所述医用管还包括：
包覆层，所述包覆层设于所述编织层的外侧，且所述包覆层的材质为PVC或聚氨酯或PP或尼龙或橡胶或硅胶。
本申请一些实施例中，所述编织层包括至少两根呈网格状交错叠压的柔性编织线束。
本申请一些实施例中，各所述柔性编织线束与所述内管的轴向之间均呈1°～89°的角度。
本申请一些实施例中，各所述柔性编织线束与所述内管的轴向之间均呈40°～50°的角度。
本申请一些实施例中，包括两类所述柔性编织线束，两类所述柔性编织 线束分别朝向所述内管的轴向相对两侧延伸。
本申请一些实施例中，所述柔性编织线束的线径为0.5～1.5㎜。
本申请一些实施例中，所述内管的壁厚与所述内管的内径的比值范围为0.5～2。
本申请一些实施例中，所述内管的壁厚为0.5㎜～1.5㎜，所述内管的内径为1㎜～1.5㎜。
本申请一些实施例中，所述内管的材质为PVC或聚氨酯或pp或尼龙或橡胶或硅胶。
本申请一些实施例中，所述柔性编织线束为不锈钢丝或尼龙丝或凯夫拉。
本申请的医用管，其包括内管及设于内管外周的编织层，且内管选用柔性管，编织层由柔性编织线束编织而成，从而能够保证管路的柔性及抗折性；另外，通过合理设置内管的壁厚与内径，以及选取合理线径的柔性编织线束编制编织层，能够有效提高管路所能承受的最大机械强度。
附图说明
以下结合附图和优选实施例来对本申请进行进一步详细描述，但是本领域技术人员将领会的是，这些附图仅是出于解释优选实施例的目的而绘制的，并且因此不应当作为本申请范围的限制。此外，除非特别指出，附图仅是意在概念性地表示所描述对象的组成或构造并可能包含夸张性显示，并且附图也并非一定按比例绘制。
图1是根据本申请一些实施例的医用管的结构示意图；
图2是根据本申请一些实施例的医用管的结构示意图；
图中，10、内管；20、编织层；21、柔性编织线束；30、包裹层。
具体实施方式
以下将参考附图来详细描述本申请的优选实施例。本领域中的技术人员将领会的是，这些描述仅为描述性的、示例性的，并且不应当被解释为限定了本申请的保护范围。
首先，需要说明的是，在本文中所提到的顶部、底部、朝上、朝下等方位是相对于各个附图中的方向来定义的，它们是相对的概念，并且因此能够 根据其所处于的不同位置和不同的实用状态而改变。所以，不应将这些或其他方位用于理解为限制性用语。
应注意，术语“包括”并不排除其他要素或步骤，并且“一”或“一个”并不排除复数。
此外，还应当指出的是，对于本文的实施例中描述或隐含的任意单个技术特征，或在附图中示出或隐含的任意单个技术特征，仍能够在这些技术特征(或其等同物)之间继续进行组合，从而获得未在本文中直接提及的本申请的其他实施例。
另外还应当理解的是，本文中采用术语“第一”、“第二”等来描述各种信息，但这些信息不应限于这些术语，这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，“第一”信息也可以被称为“第二”信息，类似的，“第二”信息也可以被称为“第一”信息。
应当注意的是，在不同的附图中，相同的参考标号表示相同或大致相同的组件。
实施例一
如图1所示，本申请实施例的一种医用管，其包括：内管10及设于内管10外周的编织层20；内管10为柔性管，内管10的壁厚与内管10的内径的比值范围为0.1～10，编织层20设有一层或者从内至外依次叠设的多层，编织层20包括一根或多根交错叠压的柔性编织线束21，柔性编织线束21的线径为0.01～10㎜。
本实施例中的医用管，内管10选用柔性管，且编织层20由柔性编织线束21编织而成，从而能够保证该医用管的整体柔性及抗折性；另外，医用管采用内管10与编织层20的结合，并通过合理设置内管10的壁厚与内径，以及选取合理线径的柔性编织线束21编制编织层20，能够有效提高承受管路液体压强的能力，本实施例中的医用管的承受压力强度范围为0.01MPa～500Mpa。
进一步地，本申请一些实施例中，编织层20包括至少两根呈网格状交错叠压的柔性编织线束21，具体参阅附图1所示；通过这种编织形式能够保证 承压能力。
如图1所示，本实施例中，共设置两类柔性编织线束21，其中一类柔性编织线束21与内管10的轴向之间所呈的编织方向角为α，另一类柔性编织线束21与内管10的轴向之间所呈的编织方向角为β；且α与β可以相等，也可以不同；示例性地，α与β均为1°～89°，通过控制编织方向角能够改变受力方向，从而优化耐压强度。
优选地，为了提高承压强度，α与β均优选为40°～50°，即两类柔性编织线束21之间的夹角呈80°～100°。
另外，当设置多层编织层20时，各编织层20中的α与β可设置相同也可设置为不相同，在此不作限定。
示例性地，本实施例中的柔性编织线束21的线径可选为0.5～1.5㎜。
本申请一些实施例中，内管10的壁厚与内管10的内径的比值范围为0.5～2，通过增加内管10的壁厚能够有效提高管路的耐压强度；可选地，内管10的内径为1㎜～1.5㎜，内管10的壁厚为0.5㎜～1.5㎜。
为了保证承压能力，内管10选用高强度的软性金属或非金属材质制成，示例性地，内管10的材质选用PVC、聚氨酯、pp、尼龙、橡胶或硅胶中的任一种。
另外，为了保证良好的抗弯折形以及耐压能力，编织线束的材质可为软性金属或者非金属；示例性地，本申请一些实施例中，柔性编织线束21选用不锈钢丝、尼龙丝或凯夫拉中的任一种。
综上，本申请实施例的医用管，其包括内管10及设于内管10外周的编织层20，且内管10选用柔性管，编织层20由柔性编织线束21编织而成，从而能够保证管路的柔性及抗折性；另外，通过合理设置内管10的壁厚与内径，以及选取合理线径的柔性编织线束21编制编织层20，能够有效提高管路所能承受的最大机械强度。
实施例二
如图2所示，本实施例提供一种医用管，其与实施例一的区别仅在于，本实施例中的医用管还包括：包覆层30，包覆层30设于编织层20的外侧， 且包覆层30的材质为PVC、聚氨酯、PP、尼龙、橡胶、硅胶中的任一种。
本说明书参考附图来公开本申请，并且还使本领域中的技术人员能够实施本申请，包括制造和使用任何装置或系统、采用合适的材料以及使用任何结合的方法。本申请的范围由请求保护的技术方案限定，并且包括本领域中的技术人员想到的其他实例。只要此类其他实例包括并非不同于请求保护的技术方案字面语言的结构元件，或此类其他实例包含与请求保护的技术方案的字面语言没有实质性区别的等价结构元件，则此类其他实例应当被认为处于本申请请求保护的技术方案所确定的保护范围内。

Claims (11)

  1. 一种医用管，其特征在于，包括：
    内管，所述内管为柔性管，所述内管的壁厚与所述内管的内径的比值范围为0.1～10；
    一层或多层从内至外依次叠设的编织层，所述编织层设于所述内管的外周，所述编织层包括一根或多根交错叠压的柔性编织线束，所述柔性编织线束的线径为0.01～10㎜。
  2. 根据权利要求1所述的医用管，其特征在于，还包括：
    包覆层，所述包覆层设于所述编织层的外侧，且所述包覆层的材质为PVC或聚氨酯或PP或尼龙或橡胶或硅胶。
  3. 根据权利要求1所述的医用管，其特征在于，所述编织层包括至少两根呈网格状交错叠压的柔性编织线束。
  4. 根据权利要求3所述的医用管，其特征在于，各所述柔性编织线束与所述内管的轴向之间均呈1°～89°的角度。
  5. 根据权利要求4所述的医用管，其特征在于，各所述柔性编织线束与所述内管的轴向之间均呈40°～50°的角度。
  6. 根据权利要求5所述的医用管，其特征在于，包括两类所述柔性编织线束，两类所述柔性编织线束分别朝向所述内管的轴向相对两侧延伸。
  7. 根据权利要求3所述的医用管，其特征在于，所述柔性编织线束的线径为0.5～1.5㎜。
  8. 根据权利要求3所述的医用管，其特征在于，所述内管的壁厚与所述内管的内径的比值范围为0.5～2。
  9. 根据权利要求8所述的医用管，其特征在于，所述内管的壁厚为0.5㎜～1.5㎜，所述内管的内径为1㎜～1.5㎜。
  10. 根据权利要求1-9中任一项所述的医用管，其特征在于，所述内管的材质为PVC或聚氨酯或pp或尼龙或橡胶或硅胶。
  11. 根据权利要求1-9中任一项所述的医用管，其特征在于，所述柔性编织线束为不锈钢丝或尼龙丝或凯夫拉。
PCT/CN2021/129262 2021-09-26 2021-11-08 一种医用管 Ceased WO2023045043A1 (zh)

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