WO2021136353A1 - 一种灵活弯折的内窥镜用蛇管 - Google Patents

一种灵活弯折的内窥镜用蛇管 Download PDF

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Publication number
WO2021136353A1
WO2021136353A1 PCT/CN2020/141302 CN2020141302W WO2021136353A1 WO 2021136353 A1 WO2021136353 A1 WO 2021136353A1 CN 2020141302 W CN2020141302 W CN 2020141302W WO 2021136353 A1 WO2021136353 A1 WO 2021136353A1
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WO
WIPO (PCT)
Prior art keywords
polished rod
rod section
lug
fixed
section
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PCT/CN2020/141302
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English (en)
French (fr)
Inventor
莫文军
唐鹏
周冠华
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湖南省华芯医疗器械有限公司
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Publication of WO2021136353A1 publication Critical patent/WO2021136353A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/008—Articulations

Definitions

  • the utility model belongs to the technical field of endoscopes, and in particular relates to a flexible bending flexible tube for an endoscope.
  • the built-in snake bone is bent by the method of pulling the control line connected with the snake bone, and the snake bone is used by the joints of each section.
  • the connecting shafts are connected to each other and then rotate axially to work.
  • the utility model patent with the patent application number CN200920207896.5 discloses an endoscope snake bone, which includes: a snake bone end section, a snake bone root end section, which is used to connect the snake bone end section and the snake bone root
  • the snake bone mid-end connecting joint of the end section and the operation line used for operating the endoscope snake-bone direction change; the snake-bone head end section, the snake-bone root end section and the snake-bone mid-end connecting section are cross-fitted and connected ,
  • the snake bone end section, the snake bone root end section and the snake bone mid-end connecting joint are provided with connecting holes, and the operating wire connects the snake bone end section, the snake bone root end section and the snake bone through the connecting holes.
  • the end joints are connected to each other; the end joints of the snake bone, the root end section of the snake bone, and the upper connection part of the middle end connection section of the snake bone are cross-fitted and connected with each other.
  • the operating wire is connected to the end section of the snake bone and the root end section of the snake bone through the connecting hole. It is connected with the connecting joint at the middle end of the snake bone, and the operation wire is pulled to control the turning of the endoscope snake bone, and the volume is small, the diameter is thin, and the turning angle is flexible, and realizes the purpose of the utility model.
  • connection part of the snake-bone joint in the prior art does not leave a gap, and the snake-bone joint requires greater force when tilting relative to the adjacent snake-bone joint. Therefore, the existing snake bones are difficult to bend, or cannot be bent to a specific angle, and the operation is difficult.
  • connection between the two snake bone connecting joints in the prior art is too tight, the snake bone cannot be properly adjusted along the vertical direction of the tilting direction, resulting in the snake bone being unable to bend passively, and the forward movement of the snake bone is difficult.
  • the purpose of the present invention is to provide an endoscope flexible tube with a long polished rod section to ensure flexible tilting or passive bending.
  • a flexible flexible tube for an endoscope includes a plurality of connecting rings, one side of the connecting ring is fixed with a connecting lug, the other end of the connecting ring is fixed with a connecting concave ear, and the connecting lug of one connecting ring is connected to the adjacent one.
  • a connecting piece is arranged between the connecting lugs of the connecting ring, and one end of the connecting piece is fixed to a connecting lug or connecting lug of a connecting ring.
  • the connecting piece includes a polished rod section, and the connecting lugs or connecting lugs of adjacent connecting rings are fixed. It is arranged on the polished rod section, and the length of the polished rod section is greater than the thickness of the connecting lug or the connecting concave ear sleeved on the polished rod section.
  • the connecting piece further includes a fixed section, the fixed end is fixed to the polished rod section, the connecting concave ear sleeve of the connecting ring is arranged on the polished rod section, and the connecting lugs of adjacent connecting rings are fixed to the fixed section.
  • an end of the polished rod section away from the fixed section is fixed with a rib for blocking the connecting concave ear.
  • the fixing section is riveted and fixed with the connecting lug.
  • the connecting piece is provided with a through hole, the through hole penetrates the polished rod section and the fixed section, and a fastener is connected in the through hole.
  • the fastener is a pin or a screw, and the diameter of the polished rod section is larger than the diameter of the fixed section.
  • one end of the polished rod segment is fixed on the connecting lug of the connecting ring, the connecting lugs of adjacent connecting rings are sleeved on the polished rod segment, and the end of the polished rod segment away from the connecting lug is fixed with several stoppers.
  • the number of the stopper is two, and the two stoppers are separately provided on both sides of the polished rod section
  • a central hole is provided in the polished rod section.
  • One end of the connecting piece of the present invention is fixed, and the length of the polished rod section of the connecting piece is greater than the thickness of the connecting lug or the connecting concave ear sleeved on the polished rod section. Therefore, the connecting ring sleeved on the polished rod section can Flexible tilting, to avoid the connection ring being stuck.
  • the connecting ring can be flexibly tilted, and the flexible tube can be bent to a specific angle more easily, ensuring that the end of the tube of the endoscope can be actively bent to a specific degree when the endoscope is used.
  • a gap is reserved on both sides of the connecting lug or connecting concave ear, then the connecting lug or connecting concave ear can be inclined to a certain angle with respect to the polished rod section, and the flexible tube can be passively bent at a certain angle in the vertical direction of the tilting direction, so that the catheter The end of the tube is easier to move forward, and at the same time, the end of the catheter is less harmful to the human body.
  • the connecting concave ear sleeves of the connecting ring are set on the polished rod section, and the connecting lugs of the adjacent connecting rings are fixed to the fixed section, so that the two connecting rings will not squeeze each other, and set on the connecting concave on the polished rod section.
  • the ear can tilt flexibly. Since the connecting lug of one connecting ring is fixed to the fixed section, and the connecting concave ear sleeve of the other connecting ring is set on the polished rod section, the connecting concave ear sleeved on the polished rod section can slide correspondingly or produce a certain amount relative to the polished rod section. Tilt. Therefore, the connecting lugs sleeved on the polished rod section can generate passive inclination, and the flexible tube can generate a certain passive bending when it is excessively squeezed during movement, which facilitates the movement of the flexible tube.
  • the ribs can block the connecting ears and avoid the situation that the connecting ears fall out of the polished rod section. After the connecting concave ear is restricted by the ribs, the connecting ring can be reliably connected, avoiding the tripping of adjacent connecting rings, and ensuring the reliable connection between the snake bones.
  • the connecting lug is always sleeved on the polished rod section, and one side of the connecting lug can be blocked by the rib, and the other side of the connecting lug can be limited by the connecting lug of another connecting ring to ensure that the connecting lug is always sleeved Set on the polished rod section to ensure reliable connection when there is a flexible moving space between the connecting rings.
  • the fixed section and the connecting lug are riveted and fixed, so the fixed section can be fixed with the connecting lug to ensure a reliable connection.
  • the connecting lugs will not squeeze the connecting lugs on the polished rod section, avoid the jamming of the connecting lugs and the connecting lugs, and ensure that the connecting ring can be relative to the adjacent
  • the connecting ring tilts flexibly or generates passive bending.
  • a pin or screw is connected in the through hole of the connecting piece, and the pin or screw can block one end of the fixed section.
  • the diameter of the polished rod section is larger than the diameter of the fixed section.
  • the polished rod section can block another section of the fixed section.
  • the connecting lugs can be restricted to the fixed section to avoid the connecting lugs from squeezing the connecting lugs on the adjacent connecting rings. .
  • the pins or screws are convenient for disassembly and installation, and the connecting ring can be connected quickly and reliably to ensure that the snake tube can be used normally.
  • the connecting lug of the connecting ring is set on the polished rod section, and one end of the polished rod section is fixed with the connecting lug of the other connecting ring, and the connecting lug forms a blocking edge on one side of the polished rod section.
  • a number of stoppers are fixed at one end of the polished rod segment away from the connecting concave ear, and the stoppers form a blocking edge on the other side of the polished rod segment.
  • the length of the polished rod segment is greater than the thickness of the connecting lugs sleeved on it.
  • Two stoppers can block the side of the polished rod section away from the connecting concave ear, so the connecting lug will not come out of the polished rod section, ensuring reliable connection between adjacent connecting rings.
  • the two stoppers can limit the positions of both sides of the connecting lug, so that the connecting lug can be stably sleeved on the polished rod section to avoid the connecting lug from falling off.
  • the weight of the polished rod section is reduced, and the weight of the entire flexible tube is correspondingly reduced. After the flexible tube is installed in the tube, the weight of the flexible tube is lighter to ensure the flexibility of bending of the tube.
  • Figure 1 is a schematic diagram of the structure of the snake tube
  • Figure 2 is a schematic diagram of the structure of the utility model in Example 1;
  • Figure 3 is a partial enlarged view of A in Figure 2;
  • Figure 4 is a schematic diagram of the structure of the utility model in Example 2.
  • Figure 5 is a partial enlarged view of B in Figure 4.
  • Figure 6 is a schematic diagram of the structure of the utility model in embodiment 3.
  • Fig. 7 is a schematic diagram of the structure at C in Fig. 6.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features .
  • the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • “multiple” means two or more than two, unless otherwise specifically defined.
  • the terms “installation”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present utility model can be understood according to specific circumstances.
  • the flexible tube for an endoscope of this embodiment includes a plurality of connecting rings 1.
  • a connecting lug 2 is fixed on one side of the connecting ring 1, and a connecting concave ear 3 is fixed on the other end of the connecting ring 1.
  • a connecting piece 4 is provided between the connecting lug 2 of one connecting ring 1 and the connecting lug 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected to the connecting lug 2 or connecting lug 3 of one connecting ring 1.
  • the connecting piece 4 includes a polished rod section 41, the connecting lug 2 or the connecting lug 3 of the adjacent connecting ring 1 is sleeved on the polished rod section 41, and the length of the polished rod section 41 is greater than the connecting lugs sleeved on the polished rod section 41 2 or the thickness of the connecting concave ear 3.
  • the connecting ring 1 can be flexibly tilted to avoid the situation that the connecting ring 1 is stuck.
  • the connecting ring 1 can be flexibly tilted, so that the flexible tube can be bent to a specific angle more easily, ensuring that the end of the tube of the endoscope can be easily and actively bent to a specific degree when the endoscope is used.
  • a gap is reserved on both sides of the connecting lug 2 or the connecting lug 3, and the connecting lug 2 or the connecting lug 3 can be inclined to a certain angle with respect to the polished rod section 41, and the snake tube can be passively bent in the vertical direction of the tilting direction A certain angle makes the end of the catheter easier to move forward, and at the same time reduces the damage to the human body from the end of the catheter.
  • the connecting piece 4 further includes a fixing section 42, the fixed end is fixed to the polished rod section 41, the connecting lug 3 of the connecting ring 1 is sleeved on the polished rod section 41, and the connecting lug 2 of the adjacent connecting ring 1 is fixed to the polished rod section 41.
  • Segment 42 is fixed.
  • the connecting lug 3 of the connecting ring 1 is sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting ring 1 are fixed to the fixed section 42, so that the two connecting rings 1 will not be squeezed between each other and are sleeved on the polished rod.
  • the connecting lug 3 on the segment 41 can be flexibly tilted.
  • the connecting lug 3 sleeved on the polished rod section 41 can correspond to Sliding or a certain tilt relative to the polished rod section 41. Therefore, the connecting lug 3 sleeved on the polished rod section 41 can be passively inclined, and the serpentine tube can generate a certain passive bending when it is excessively squeezed during movement, which facilitates the movement of the serpentine tube.
  • an end of the polished rod section 41 away from the fixing section 42 is fixed with a rib 411 for blocking the connection of the concave ear 3.
  • the rib 411 can block the connecting concave ear 3 to prevent the connecting concave ear 3 from coming out of the polished rod section 41.
  • the connecting ring 1 can be reliably connected to prevent the adjacent connecting ring 1 from tripping, and to ensure a reliable connection between the snake bones.
  • the connecting lug 3 is always sleeved on the polished rod section 41, and one side of the connecting lug 3 can be blocked by the rib 411, and the other side of the connecting lug 3 can be restricted by the connecting lug 2 of the other connecting ring 1. , It is ensured that the connecting concave ear 3 is always sleeved on the polished rod section 41, and the connection is reliable when there is a flexible moving space between the connecting rings 1.
  • the fixing section 42 is riveted and fixed to the connecting lug 2.
  • the fixing section 42 and the connecting lug 2 are riveted and fixed, so the fixing section 42 can be fixed with the connecting lug 2 to ensure a reliable connection.
  • the connecting lug 2 on the connecting ring 1 is fixed, the connecting lug 2 will not squeeze the connecting lug 3 on the polished rod section 41, avoiding the jamming of the connecting lug 2 and the connecting lug 3, and ensuring
  • the connecting ring 1 can be flexibly tilted or passively bent relative to the adjacent connecting ring 1.
  • the flexible tube for an endoscope of this embodiment includes a number of connecting rings 1.
  • One side of the connecting ring 1 is fixed with a connecting lug 2 and the other end of the connecting ring 1 is fixed with a connection
  • the lug 3 is provided with a connecting piece 4 between the connecting lug 2 of a connecting ring 1 and the connecting lug 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected with the connecting lug 2 of a connecting ring 1 or
  • the lug 3 is fixed, and the connecting piece 4 includes a polished rod section 41.
  • the connecting lug 2 or the connecting lug 3 of the adjacent connecting ring 1 is sleeved on the polished rod section 41, and the length of the polished rod section 41 is longer than the length of the polished rod section 41.
  • the connecting ring 1 can be flexibly tilted to avoid the situation that the connecting ring 1 is stuck.
  • the connecting ring 1 can be flexibly tilted, so that the flexible tube can be bent to a specific angle more easily, ensuring that the end of the tube of the endoscope can be easily and actively bent to a specific degree when the endoscope is used.
  • a gap is reserved on both sides of the connecting lug 2 or the connecting lug 3, and the connecting lug 2 or the connecting lug 3 can be inclined to a certain angle with respect to the polished rod section 41, and the snake tube can be passively bent in the vertical direction of the tilting direction A certain angle makes the end of the catheter easier to move forward, and at the same time reduces the damage to the human body from the end of the catheter.
  • the connecting piece 4 further includes a fixing section 42, the fixed end is fixed to the polished rod section 41, the connecting lug 3 of the connecting ring 1 is sleeved on the polished rod section 41, and the connecting lug 2 of the adjacent connecting ring 1 is fixed to the polished rod section 41.
  • Segment 42 is fixed.
  • the connecting lug 3 of the connecting ring 1 is sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting ring 1 are fixed to the fixed section 42, so that the two connecting rings 1 will not be squeezed between each other and are sleeved on the polished rod.
  • the connecting lug 3 on the segment 41 can be flexibly tilted.
  • the connecting lug 3 sleeved on the polished rod section 41 can correspond to Sliding or a certain tilt relative to the polished rod section 41. Therefore, the connecting lug 3 sleeved on the polished rod section 41 can be passively inclined, and the serpentine tube can generate a certain passive bending when it is excessively squeezed during movement, which facilitates the movement of the serpentine tube.
  • an end of the polished rod section 41 away from the fixing section 42 is fixed with a rib 411 for blocking the connecting ear 3.
  • the rib 411 can block the connecting concave ear 3 to prevent the connecting concave ear 3 from coming out of the polished rod section 41.
  • the connecting ring 1 can be reliably connected to prevent the adjacent connecting ring 1 from tripping, and to ensure a reliable connection between the snake bones.
  • the connecting lug 3 is always sleeved on the polished rod section 41, and one side of the connecting lug 3 can be blocked by the rib 411, and the other side of the connecting lug 3 can be restricted by the connecting lug 2 of the other connecting ring 1. , It is ensured that the connecting concave ear 3 is always sleeved on the polished rod section 41, and the connection is reliable when there is a flexible moving space between the connecting rings 1.
  • the connecting member 4 is provided with a through hole, the through hole penetrates the polished rod section 41 and the fixed section 42, and a fastener 43 is connected in the through hole.
  • the fastener 43 is a pin or a screw.
  • the diameter of the polished rod section 41 is larger than The diameter of the fixed section 42.
  • a pin or screw is connected in the through hole of the connecting piece 4, and the pin or screw can block one end of the fixed section 42.
  • the diameter of the polished rod section 41 is greater than the diameter of the fixed section 42, and the polished rod section 41 can block another section of the fixed section 42, and the connecting lug 2 can be restricted to the fixed section 42, avoiding the connecting lug 2 to the adjacent connecting ring 1.
  • the connecting lug 3 on the upper part causes squeezing.
  • the pins or screws are convenient for disassembly and installation, and the connecting ring 1 can be connected quickly and reliably, ensuring that the snake tube can be used normally.
  • the flexible tube for an endoscope of this embodiment includes a number of connecting rings 1.
  • One side of the connecting ring 1 is fixed with a connecting lug 2 and the other end of the connecting ring 1 is fixed with a connection
  • the lug 3 is provided with a connecting piece 4 between the connecting lug 2 of one connecting ring 1 and the connecting lug 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected to the connecting lug 2 of one connecting ring 1 or
  • the lug 3 is fixed, and the connecting piece 4 includes a polished rod section 41.
  • the connecting lug 2 or the connecting lug 3 of the adjacent connecting ring 1 is sleeved on the polished rod section 41, and the length of the polished rod section 41 is longer than the length of the polished rod section 41.
  • the connecting ring 1 can be flexibly tilted to avoid the situation that the connecting ring 1 is stuck.
  • the connecting ring 1 can be flexibly tilted, so that the flexible tube can be bent to a specific angle more easily, ensuring that the end of the tube of the endoscope can be easily and actively bent to a specific degree when the endoscope is used.
  • a gap is reserved on both sides of the connecting lug 2 or the connecting lug 3, and the connecting lug 2 or the connecting lug 3 can be inclined to a certain angle with respect to the polished rod section 41, and the snake tube can be passively bent in the vertical direction of the tilting direction A certain angle makes the end of the catheter easier to move forward, and at the same time reduces the damage to the human body from the end of the catheter.
  • one end of the polished rod section 41 is fixed on the connecting lug 3 of the connecting ring 1, the connecting lug 2 of the adjacent connecting ring 1 is sleeved on the polished rod section 41, and the polished rod section 41 is away from the end of the connecting lug 3 A number of stoppers 412 are fixed.
  • the connecting lug 2 of the connecting ring 1 is sleeved on the polished rod section 41, and one end of the polished rod section 41 is fixed to the connecting lug 3 of the other connecting ring 1, then the connecting lug 3 forms a blocking edge on one side of the polished rod section 41.
  • a plurality of stoppers 412 are fixed at one end of the polished rod section 41 away from the connecting ear 3, and the stoppers 412 form a blocking edge on the other side of the polished rod section 41.
  • the length of the polished rod section 41 is greater than the thickness of the connecting lug 2 sleeved on it.
  • the number of the stopper 412 is two, and the two stoppers 412 are separately provided on both sides of the polished rod section 41. 7.
  • the two stoppers 412 can block the side of the polished rod section 41 away from the connecting concave ear 3, so the connecting lug 2 will not come out of the polished rod section 41, ensuring reliable connection between adjacent connecting rings 1.
  • the two stoppers 412 can limit the two sides of the connecting lug 2 so that the connecting lug 2 can be stably sleeved on the polished rod section 41 to prevent the connecting lug 2 from falling off.
  • the stopper 412 is bent using a flanging process.
  • the polished rod section 41 is provided with a central hole 413, so the weight of the polished rod section 41 is reduced, and the weight of the entire serpentine tube is correspondingly reduced. After the serpentine tube is installed in the duct, the weight of the serpentine tube is lighter, which ensures the flexibility of bending of the duct.
  • the present utility model is not limited to the above-mentioned optional embodiments.
  • anyone can obtain other products in various forms under the enlightenment of the present utility model.
  • the technical solutions within the scope defined by the claims fall within the protection scope of the present utility model.

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Abstract

一种灵活弯折的内窥镜用蛇管。包括若干连接环（1），连接环（1）的一侧固定有连接凸耳（2），连接环（1）的另一端固定有连接凹耳（3），一个连接环（1）的连接凸耳（2）与相邻的连接环（1）的连接凹耳（3）之间设置有连接件（4），连接件（4）的一端与一个连接环（1）的连接凸耳（2）或连接凹耳（3）固定，连接件（4）包括光杆段（41），相邻连接环（1）的连接凸耳（2）或连接凹耳（3）套设于光杆段（41）上，光杆段（41）的长度大于套设于光杆段（41）上的连接凸耳（3）或连接凹耳（2）的厚度。提供了一种光杆段（41）长度较长以保证灵活倾转或被动弯曲的内窥镜用蛇管。

Description

一种灵活弯折的内窥镜用蛇管 技术领域
本实用新型属于内窥镜技术领域，具体涉及一种灵活弯折的内窥镜用蛇管。
背景技术
现有的内窥镜在弯曲角度实现头部弯曲变向时，都是由内置的蛇骨通过牵拉与蛇骨连接的操纵线的方法使其弯曲，而蛇骨是靠各节的关节用连接轴相互连接，再轴向转动来工作的。
专利申请号为CN200920207896.5的实用新型专利公布了一种内窥镜蛇骨，它包括：蛇骨头端节、蛇骨根端节、用于连接所述蛇骨头端节与所述蛇骨根端节的蛇骨中端连接节及用于操作所述内窥镜蛇骨变向的操作线；所述蛇骨头端节、蛇骨根端节和蛇骨中端连接节之间交叉配合连接，所述蛇骨头端节、蛇骨根端节和蛇骨中端连接节上设置有连接孔，所述操作线通过连接孔将所述蛇骨头端节、蛇骨根端节和蛇骨中端连接节互相连接；通过蛇骨头端节、蛇骨根端节和蛇骨中端连接节上连接部互相交叉配合连接而成，操作线通过连接孔与蛇骨头端节、蛇骨根端节和蛇骨中端连接节连接，牵扯操作线控制内窥镜蛇骨的转向，体积小，直径细，转角灵活，实现本实用新型的目的。
但是，现有技术的蛇骨连接节的连接部位未留出间隙，蛇骨连接节相对于相邻蛇骨连接节倾转时所需力度较大。因此，现有的蛇骨弯折较为困难，或无法弯折到特定角度，操作困难。现有技术的两节蛇骨连接节之间的连接过于紧密时，蛇骨无能沿倾转方向的垂直方向做适当调整，导致蛇骨无法被动弯曲，蛇骨的前进移动较为困难。
实用新型内容
为了解决现有技术存在的上述问题，本实用新型目的在于提供一种光杆段 长度较长以保证灵活倾转或被动弯曲的内窥镜用蛇管。
本实用新型所采用的技术方案为：
一种灵活弯折的内窥镜用蛇管，包括若干连接环，连接环的一侧固定有连接凸耳，连接环的另一端固定有连接凹耳，一个连接环的连接凸耳与相邻的连接环的连接凹耳之间设置有连接件，连接件的一端与一个连接环的连接凸耳或连接凹耳固定，连接件包括光杆段，相邻连接环的连接凸耳或连接凹耳套设于光杆段上，光杆段的长度大于套设于光杆段上的连接凸耳或连接凹耳的厚度。
优选地，所述连接件还包括固定段，固定端与光杆段固定，连接环的连接凹耳套设于光杆段上，相邻连接环的连接凸耳与固定段固定。
优选地，所述光杆段远离固定段的一端固定有用于阻挡连接凹耳的挡边。
优选地，所述固定段与连接凸耳铆接固定。
优选地，所述连接件内设有通孔，通孔贯通光杆段和固定段，通孔内连接有紧固件，紧固件为销钉或螺钉，光杆段的直径大于固定段的直径。
优选地，所述光杆段的一端固定于连接环的连接凹耳上，相邻连接环的连接凸耳套设于光杆段上，光杆段远离连接凹耳的一端固定有若干挡块。
优选地，所述挡块的数量为两块，两块挡块分设于光杆段的两侧
优选地，所述光杆段内设置有中心孔。
本实用新型的有益效果为：
1.本实用新型的连接件的一端固定，而连接件的光杆段的长度大于套设于光杆段上的连接凸耳或连接凹耳的厚度，因此，该光杆段上套设的连接环能灵活倾转，避免连接环被卡死的情况。连接环能灵活倾转，则蛇管能更容易弯折到特定角度，保证使用内窥镜时，内窥镜的导管端部能方便主动弯曲到特定程 度。连接凸耳或连接凹耳的两侧均预留有间隙，则连接凸耳或连接凹耳能现对于光杆段倾斜一定角度，则蛇管能沿倾转方向的垂直方向被动弯曲一定角度，使得导管的端部更容易向前移动，同时减少了导管端部对人体的伤害。
2.连接环的连接凹耳套设于光杆段上，相邻连接环的连接凸耳与固定段固定，则两个连接环之间不会相互挤压，套设于光杆段上的连接凹耳能灵活倾转。由于一个连接环的连接凸耳与固定段固定，而另一个连接环的连接凹耳套设于光杆段上，则套设于光杆段上的连接凹耳能相应滑动或相对于光杆段产生一定倾转。因此，套设于光杆段上的连接凹耳能产生被动倾斜，蛇管能在移动时受到过大挤压时产生一定被动弯曲，方便蛇管的移动。
3.挡边能对连接凹耳进行阻挡，避免连接凹耳脱出光杆段的情况。连接凹耳被挡边限位后，连接环能可靠连接，避免相邻连接环脱扣，保证蛇骨之间可靠连接。连接凹耳始终套设在光杆段上，而连接凹耳的一侧能被挡边阻挡，连接凹耳的另一侧能被另一个连接环的连接凸耳限位，保证连接凹耳始终套设在光杆段上，保证连接环之间具有灵活移动空间的情况下连接可靠。
4.固定段与连接凸耳铆接固定，则固定段能与连接凸耳固定，保证连接可靠。连接环上的连接凸耳得到固定后，该连接凸耳不会对光杆段上的连接凹耳造成挤压，避免连接凸耳与连接凹耳卡死的情况，保证连接环能相对于相邻连接环灵活倾转或产生被动弯曲。
5.连接件的通孔内连接销钉或螺钉，则销钉或螺钉能对固定段的一端进行阻挡。光杆段的直径大于固定段的直径，光杆段能对固定段的另一段进行阻挡，连接凸耳能被限制在固定段上，避免连接凸耳对相邻连接环上的连接凹耳造成挤压。销钉或者螺钉方便拆卸和安装，则连接环能快速且可靠连接，保证蛇管能正常使用。
6.连接环的连接凸耳套设于光杆段上，且光杆段的一端与另一个连接环的连接凹耳固定，则连接凹耳形成光杆段一侧的阻挡边。光杆段远离连接凹耳的一端固定有若干挡块，则挡块形成光杆段另一侧的阻挡边。光杆段的长度大于 套设于其上的连接凸耳的厚度，则当连接凸耳套设于光杆段上时，连接凸耳能自由转动或滑动，则相邻连接环之间能灵活倾转。连接凸耳还能相对于光杆段产生一定倾斜，使得蛇管能产生一定程度地被动弯曲，方便内窥镜导管的移动。
7.两块挡块能对光杆段远离连接凹耳的一侧进行阻挡，则连接凸耳不会脱出光杆段，保证相邻连接环之间可靠连接。两块挡块能对连接凸耳的两侧进行限位，从而连接凸耳能稳定地套设在光杆段上，避免连接凸耳脱落。
8.光杆段内设置有中心孔，则光杆段的重量减轻，整个蛇管的重量相应减轻，蛇管安装于导管内后，蛇管的重量较轻，保证导管弯折的灵活性。
本实用新型的有益效果不限于此描述，为了更好的便于理解，在具体实施方式部分进行了更加详细的描述。
本实用新型的附加优点、目的，以及特征将在下面的描述中将部分地加以阐述，且将对于本领域普通技术人员在研究下文后部分地变得明显，或者可以根据本实用新型的实践而获知。本实用新型的目的和其它优点可以通过在书面说明及其权利要求书以及附图中具体指出的结构实现到并获得。
本领域技术人员将会理解的是，能够用本实用新型实现的目的和优点不限于以上具体所述，并且根据以下详细说明将更清楚地理解本实用新型能够实现的上述和其他目的。
附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是蛇管的结构示意图；
图2是实施例1中本实用新型的结构示意图；
图3是图2中A处的局部放大图；
图4是实施例2中本实用新型的结构示意图；
图5是图4中B处的局部放大图；
图6是实施例3中本实用新型的结构示意图；
图7是图6中C处的结构示意图。
图中：1-连接环；2-连接凸耳；3-连接凹耳；4-连接件；41-光杆段；42-固定段；43-紧固件；411-挡边；412-挡块；413-中心孔。
具体实施方式
下面详细描述本实用新型的实施例，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。下面通过参考附图描述的实施例是示例性的，旨在用于解释本实用新型，而不能理解为对本实用新型的限制。
在本实用新型的描述中，需要理解的是，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。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本实用新型的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本实用新型中，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，或一体地连接；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。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实用新型中的具 体含义。
实施例1
如图1～图3所示，本实施例的内窥镜用蛇管，包括若干连接环1，连接环1的一侧固定有连接凸耳2，连接环1的另一端固定有连接凹耳3，一个连接环1的连接凸耳2与相邻的连接环1的连接凹耳3之间设置有连接件4，连接件4的一端与一个连接环1的连接凸耳2或连接凹耳3固定，连接件4包括光杆段41，相邻连接环1的连接凸耳2或连接凹耳3套设于光杆段41上，光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度。
本实用新型的连接件4的一端固定，而连接件4的光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度，因此，该光杆段41上套设的连接环1能灵活倾转，避免连接环1被卡死的情况。连接环1能灵活倾转，则蛇管能更容易弯折到特定角度，保证使用内窥镜时，内窥镜的导管端部能方便主动弯曲到特定程度。连接凸耳2或连接凹耳3的两侧均预留有间隙，则连接凸耳2或连接凹耳3能现对于光杆段41倾斜一定角度，则蛇管能沿倾转方向的垂直方向被动弯曲一定角度，使得导管的端部更容易向前移动，同时减少了导管端部对人体的伤害。
更进一步，所述连接件4还包括固定段42，固定端与光杆段41固定，连接环1的连接凹耳3套设于光杆段41上，相邻连接环1的连接凸耳2与固定段42固定。连接环1的连接凹耳3套设于光杆段41上，相邻连接环1的连接凸耳2与固定段42固定，则两个连接环1之间不会相互挤压，套设于光杆段41上的连接凹耳3能灵活倾转。由于一个连接环1的连接凸耳2与固定段42固定，而另一个连接环1的连接凹耳3套设于光杆段41上，则套设于光杆段41上的连接凹耳3能相应滑动或相对于光杆段41产生一定倾转。因此，套设于光杆段41上的连接凹耳3能产生被动倾斜，蛇管能在移动时受到过大挤压时产生一定被动弯曲，方便蛇管的移动。
更进一步，所述光杆段41远离固定段42的一端固定有用于阻挡连接凹耳 3的挡边411。挡边411能对连接凹耳3进行阻挡，避免连接凹耳3脱出光杆段41的情况。连接凹耳3被挡边411限位后，连接环1能可靠连接，避免相邻连接环1脱扣，保证蛇骨之间可靠连接。连接凹耳3始终套设在光杆段41上，而连接凹耳3的一侧能被挡边411阻挡，连接凹耳3的另一侧能被另一个连接环1的连接凸耳2限位，保证连接凹耳3始终套设在光杆段41上，保证连接环1之间具有灵活移动空间的情况下连接可靠。
更进一步，所述固定段42与连接凸耳2铆接固定。固定段42与连接凸耳2铆接固定，则固定段42能与连接凸耳2固定，保证连接可靠。连接环1上的连接凸耳2得到固定后，该连接凸耳2不会对光杆段41上的连接凹耳3造成挤压，避免连接凸耳2与连接凹耳3卡死的情况，保证连接环1能相对于相邻连接环1灵活倾转或产生被动弯曲。
实施例2
如图1、图4、图5所示，本实施例的内窥镜用蛇管，包括若干连接环1，连接环1的一侧固定有连接凸耳2，连接环1的另一端固定有连接凹耳3，一个连接环1的连接凸耳2与相邻的连接环1的连接凹耳3之间设置有连接件4，连接件4的一端与一个连接环1的连接凸耳2或连接凹耳3固定，连接件4包括光杆段41，相邻连接环1的连接凸耳2或连接凹耳3套设于光杆段41上，光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度。
本实用新型的连接件4的一端固定，而连接件4的光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度，因此，该光杆段41上套设的连接环1能灵活倾转，避免连接环1被卡死的情况。连接环1能灵活倾转，则蛇管能更容易弯折到特定角度，保证使用内窥镜时，内窥镜的导管端部能方便主动弯曲到特定程度。连接凸耳2或连接凹耳3的两侧均预留有间隙，则连接凸耳2或连接凹耳3能现对于光杆段41倾斜一定角度，则蛇管能沿倾转方向的垂直方向被动弯曲一定角度，使得导管的端部更容易向前移动，同时减少了导管端部对人体的伤害。
更进一步，所述连接件4还包括固定段42，固定端与光杆段41固定，连接环1的连接凹耳3套设于光杆段41上，相邻连接环1的连接凸耳2与固定段42固定。连接环1的连接凹耳3套设于光杆段41上，相邻连接环1的连接凸耳2与固定段42固定，则两个连接环1之间不会相互挤压，套设于光杆段41上的连接凹耳3能灵活倾转。由于一个连接环1的连接凸耳2与固定段42固定，而另一个连接环1的连接凹耳3套设于光杆段41上，则套设于光杆段41上的连接凹耳3能相应滑动或相对于光杆段41产生一定倾转。因此，套设于光杆段41上的连接凹耳3能产生被动倾斜，蛇管能在移动时受到过大挤压时产生一定被动弯曲，方便蛇管的移动。
更进一步，所述光杆段41远离固定段42的一端固定有用于阻挡连接凹耳3的挡边411。挡边411能对连接凹耳3进行阻挡，避免连接凹耳3脱出光杆段41的情况。连接凹耳3被挡边411限位后，连接环1能可靠连接，避免相邻连接环1脱扣，保证蛇骨之间可靠连接。连接凹耳3始终套设在光杆段41上，而连接凹耳3的一侧能被挡边411阻挡，连接凹耳3的另一侧能被另一个连接环1的连接凸耳2限位，保证连接凹耳3始终套设在光杆段41上，保证连接环1之间具有灵活移动空间的情况下连接可靠。
更进一步，所述连接件4内设有通孔，通孔贯通光杆段41和固定段42，通孔内连接有紧固件43，紧固件43为销钉或螺钉，光杆段41的直径大于固定段42的直径。连接件4的通孔内连接销钉或螺钉，则销钉或螺钉能对固定段42的一端进行阻挡。光杆段41的直径大于固定段42的直径，光杆段41能对固定段42的另一段进行阻挡，连接凸耳2能被限制在固定段42上，避免连接凸耳2对相邻连接环1上的连接凹耳3造成挤压。销钉或者螺钉方便拆卸和安装，则连接环1能快速且可靠连接，保证蛇管能正常使用。
实施例3
如图1、图4、图5所示，本实施例的内窥镜用蛇管，包括若干连接环1，连接环1的一侧固定有连接凸耳2，连接环1的另一端固定有连接凹耳3，一个连接环1的连接凸耳2与相邻的连接环1的连接凹耳3之间设置有连接件4， 连接件4的一端与一个连接环1的连接凸耳2或连接凹耳3固定，连接件4包括光杆段41，相邻连接环1的连接凸耳2或连接凹耳3套设于光杆段41上，光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度。
本实用新型的连接件4的一端固定，而连接件4的光杆段41的长度大于套设于光杆段41上的连接凸耳2或连接凹耳3的厚度，因此，该光杆段41上套设的连接环1能灵活倾转，避免连接环1被卡死的情况。连接环1能灵活倾转，则蛇管能更容易弯折到特定角度，保证使用内窥镜时，内窥镜的导管端部能方便主动弯曲到特定程度。连接凸耳2或连接凹耳3的两侧均预留有间隙，则连接凸耳2或连接凹耳3能现对于光杆段41倾斜一定角度，则蛇管能沿倾转方向的垂直方向被动弯曲一定角度，使得导管的端部更容易向前移动，同时减少了导管端部对人体的伤害。
更进一步，所述光杆段41的一端固定于连接环1的连接凹耳3上，相邻连接环1的连接凸耳2套设于光杆段41上，光杆段41远离连接凹耳3的一端固定有若干挡块412。连接环1的连接凸耳2套设于光杆段41上，且光杆段41的一端与另一个连接环1的连接凹耳3固定，则连接凹耳3形成光杆段41一侧的阻挡边。光杆段41远离连接凹耳3的一端固定有若干挡块412，则挡块412形成光杆段41另一侧的阻挡边。光杆段41的长度大于套设于其上的连接凸耳2的厚度，则当连接凸耳2套设于光杆段41上时，连接凸耳2能自由转动或滑动，则相邻连接环1之间能灵活倾转。连接凸耳2还能相对于光杆段41产生一定倾斜，使得蛇管能产生一定程度地被动弯曲，方便内窥镜导管的移动。
更进一步，所述挡块412的数量为两块，两块挡块412分设于光杆段41的两侧。7.两块挡块412能对光杆段41远离连接凹耳3的一侧进行阻挡，则连接凸耳2不会脱出光杆段41，保证相邻连接环1之间可靠连接。两块挡块412能对连接凸耳2的两侧进行限位，从而连接凸耳2能稳定地套设在光杆段41上，避免连接凸耳2脱落。挡块412采用翻边工艺进行弯折。
所述光杆段41内设置有中心孔413，则光杆段41的重量减轻，整个蛇管的重量相应减轻，蛇管安装于导管内后，蛇管的重量较轻，保证导管弯折的灵 活性。
本实用新型不局限于上述可选实施方式，任何人在本实用新型的启示下都可得出其他各种形式的产品，但不论在其形状或结构上作任何变化，凡是落入本实用新型权利要求界定范围内的技术方案，均落在本实用新型的保护范围之内。

Claims (8)

  1. 一种灵活弯折的内窥镜用蛇管，其特征在于：包括若干连接环(1)，连接环(1)的一侧固定有连接凸耳(2)，连接环(1)的另一端固定有连接凹耳(3)，一个连接环(1)的连接凸耳(2)与相邻的连接环(1)的连接凹耳(3)之间设置有连接件(4)，连接件(4)的一端与一个连接环(1)的连接凸耳(2)或连接凹耳(3)固定，连接件(4)包括光杆段(41)，相邻连接环(1)的连接凸耳(2)或连接凹耳(3)套设于光杆段(41)上，光杆段(41)的长度大于套设于光杆段(41)上的连接凸耳(2)或连接凹耳(3)的厚度。
  2. 根据权利要求1所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述连接件(4)还包括固定段(42)，固定端与光杆段(41)固定，连接环(1)的连接凹耳(3)套设于光杆段(41)上，相邻连接环(1)的连接凸耳(2)与固定段(42)固定。
  3. 根据权利要求2所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述光杆段(41)远离固定段(42)的一端固定有用于阻挡连接凹耳(3)的挡边(411)。
  4. 根据权利要求2所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述固定段(42)与连接凸耳(2)铆接固定。
  5. 根据权利要求2所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述连接件(4)内设有通孔，通孔贯通光杆段(41)和固定段(42)，通孔内连接有紧固件(43)，紧固件(43)为销钉或螺钉，光杆段(41)的直径大于固定段(42)的直径。
  6. 根据权利要求1所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述光杆段(41)的一端固定于连接环(1)的连接凹耳(3)上，相邻连接环(1)的连接凸耳(2)套设于光杆段(41)上，光杆段(41)远离连接凹耳(3)的一端固定有若干挡块(412)。
  7. 根据权利要求6所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所 述挡块(412)的数量为两块，两块挡块(412)分设于光杆段(41)的两侧
  8. 根据权利要求6所述的一种灵活弯折的内窥镜用蛇管，其特征在于：所述光杆段(41)内设置有中心孔(413)。
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