CN201759540U - Endoscopic cannula - Google Patents

Abstract

The utility model discloses an endoscopic cannula comprising an inner layer tube and an outer layer tube which are nested with each other, wherein the front and back end surfaces of the inner layer tube and the outer layer tube are in closed connection, the rest area being a cavity, the end at the closed connection of the back end surface of the inner layer tube and the outer layer tube being a closed cap which substantially conforms to an expanded horn mouth, the closed cap being provided with a gas inlet port and a lubrication inlet port, the outer layer tube being sleeved with a plurality of air bags, the air bags being connected to the gas inlet port through the inner layer tube and the outer layer tube, the lubrication inlet port (also the CO2 inlet port for artificial pneumoperitoneum) being communicated with the inner layer tube. The utility model can greatly reduce pain for patients, can increase patients' compliance and quality of surgery, and provide a platform for natural orifice translumial endoscopic surgery (NOTES) treatment.

Description

Translated fromChinese

内镜外套管endoscopic overtube

技术领域technical field

本实用新型涉及一种医用器械，具体地说是一种内镜外套管。The utility model relates to a medical device, in particular to an endoscopic overtube.

背景技术Background technique

经自然通道的内镜手术（Natural orifice translumial endoscopic surgery, NOTES）是近年来新兴的手术方式，目前尚处于动物实验研究阶段，内镜包括胃镜、十二指肠镜和结肠镜，经内镜手术需要解决的构建腹腔工作平台成为手术的关键，现在尚无相关的手术器械。Natural orifice translumial endoscopic surgery (NOTES) is an emerging surgical method in recent years, and it is still in the stage of animal experiment research. Endoscopy includes gastroscopy, duodenoscopy and colonoscopy. Endoscopic surgery The need to solve the construction of the abdominal working platform becomes the key to the operation, and there is no relevant surgical instrument now.

发明内容Contents of the invention

本实用新型的目的是为克服上述现有技术的不足，提供一种结构简单、使用方便、能够极大降低患者的痛苦，提高患者的依从性和手术质量的内镜外套管。The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide an endoscopic overtube with simple structure, convenient use, which can greatly reduce the pain of the patient, and improve the patient's compliance and operation quality.

为实现上述目的，本实用新型采用下述技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:

一种内镜外套管，包括嵌套在一起的内层管和外层管，所述内层管和外层管的前后两端面封闭连接，其他区域为空腔；所述内层管和外层管的后端面封闭连接端为膨大的喇叭口状封闭帽，该封闭帽上设有气体输入口和润滑剂输入口，外层管上套有若干气囊，气囊通过内层管和外层管之间的空腔与气体输入口相连，润滑剂输入口连通到内层管。An endoscopic overtube, comprising an inner tube and an outer tube nested together, the front and rear ends of the inner tube and the outer tube are closed and connected, and the other areas are cavities; the inner tube and the outer tube The closed connection end of the rear end face of the layer tube is an enlarged trumpet-shaped closing cap, which is provided with a gas input port and a lubricant input port, and a number of air bags are set on the outer layer tube, and the air bag passes through the inner layer tube and the outer layer tube. The cavity between them is connected to the gas inlet, and the lubricant inlet is connected to the inner tube.

所述内层管为内嵌弹簧的螺旋弹簧管。The inner tube is a helical spring tube with a built-in spring.

所述外层管上设有刻度标记。Scale marks are arranged on the outer tube.

本实用新型的材质均为聚氨酯，依据需要调整成分，获得不同力学性能的聚氨酯。两个气囊注气及抽气由气泵自动控制。当向气囊内打入气体时，气囊可以膨胀至所标明的直径，当再增加压力时，气囊直径相对恒定而不会再明显扩大。治疗时应根据套管外径尺寸及消化道打孔的位置，以及希望达到的扩张大小而选择不同大小的扩张气囊，以便起到良好的固定套管的作用，并避免消化道内消化液向腹腔溢出。润滑液输入端可接注射器，由注射器推入润滑液。外套管后端封闭帽可实现与胃镜的紧密结合，确保润滑液无溢漏。The materials of the utility model are all polyurethanes, and the components are adjusted according to needs to obtain polyurethanes with different mechanical properties. The air injection and air extraction of the two airbags are automatically controlled by the air pump. When gas is injected into the airbag, the airbag can expand to the marked diameter, and when the pressure is increased, the diameter of the airbag is relatively constant and will not expand significantly. During the treatment, dilation balloons of different sizes should be selected according to the outer diameter of the cannula, the position of the perforation of the digestive tract, and the desired expansion size, so as to play a good role in fixing the cannula and prevent the digestive fluid in the digestive tract from flowing into the abdominal cavity. overflow. The lubricating fluid input end can be connected with a syringe, and the lubricating fluid is pushed in by the syringe. The closed cap at the rear end of the outer cannula can be tightly combined with the gastroscope to ensure no leakage of lubricating fluid.

为了便于控制套管插入的位置，并确保套管固定后位置不发生改变，套管外表面设计有长度标记。In order to control the insertion position of the cannula and ensure that the position of the cannula does not change after it is fixed, the outer surface of the cannula is designed with a length mark.

    本实用新型的优点：极大降低了患者的痛苦，提高了患者的依从性和手术质量，为NOTES治疗提供了一种平台。The utility model has the advantages of greatly reducing the pain of the patient, improving the patient's compliance and operation quality, and providing a platform for NOTES treatment.

附图说明Description of drawings

图1是本实用新型结构示意图；Fig. 1 is a structural representation of the utility model;

图2是本实用新型后端面剖面图；Fig. 2 is a sectional view of the rear end face of the utility model;

图3是本实用新型直管段剖面图；Fig. 3 is a sectional view of the straight pipe section of the utility model;

图4是本实用新型刻度标记部分示意图；Fig. 4 is a partial schematic diagram of the scale mark of the utility model;

其中1.气体输入口，2.封闭帽，3.润滑剂输入口，4.内层管，5.外层管，6.外层管引导段，7.气囊，8.空腔。Wherein 1. gas input port, 2. closing cap, 3. lubricant input port, 4. inner tube, 5. outer tube, 6. outer tube guide section, 7. air bag, 8. cavity.

具体实施方式Detailed ways

下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.

图1-4中，一种内镜外套管，包括嵌套在一起的内层管4和外层管5，所述内层管4和外层管5的前后两端面封闭连接，其他区域为空腔8；所述内层管和外层管的后端面封闭连接端为膨大的喇叭口状封闭帽2，该封闭帽2上设有气体输入口1和润滑剂输入口3，外层管5上套有两个气囊7，气囊7通过内层管和外层管之间的空腔与气体输入口1相连，润滑剂输入口（也可作为CO₂输入口，作人工气腹用）连通到内层管。外层管5的前端为外层管引导段6In Fig. 1-4, a kind of endoscopic overtube comprises theinner layer tube 4 and theouter layer tube 5 nested together, the front and rear ends of theinner layer tube 4 and theouter layer tube 5 are closed and connected, and other areas areCavity 8; the closed connection end of the rear end face of the inner layer pipe and the outer layer pipe is an enlarged trumpet-shaped closing cap 2, which is provided with agas input port 1 and alubricant input port 3, and theouter layer tube 5 is covered with two airbags 7, the airbag 7 is connected to thegas input port 1 through the cavity between the inner tube and the outer tube, and the lubricant input port (also can be used as a_CO2 input port for artificial pneumoperitoneum) connected to the inner tube. The front end of theouter layer pipe 5 is the outer layer pipe guide section 6

内层管4为内嵌弹簧的螺旋弹簧管。Theinner tube 4 is a helical spring tube with a built-in spring.

外层管5上设有刻度标记。Scale marks are arranged on theouter tube 5 .

本实用新型的材质均为聚氨酯，依据需要调整成分，获得不同力学性能的聚氨酯。两个气囊7注气及抽气由气泵自动控制。当向气囊7内打入气体时，气囊可7以膨胀至所标明的直径，当再增加压力时，气囊7直径相对恒定而不会再明显扩大。治疗时应根据套管外径尺寸及消化道打孔的位置，以及希望达到的扩张大小而选择不同大小的扩张气囊7，以便起到良好的固定套管的作用，并避免消化道内消化液向腹腔溢出。润滑液输入口3可接注射器，由注射器推入润滑液。外套管后端封闭帽5可实现与胃镜的紧密结合，确保润滑液无溢漏。The materials of the utility model are all polyurethanes, and the components are adjusted according to needs to obtain polyurethanes with different mechanical properties. The air injection and air extraction of the two airbags 7 are automatically controlled by the air pump. When gas is injected into the air bag 7, the air bag can expand to the indicated diameter, and when the pressure is increased, the diameter of the air bag 7 is relatively constant and will not expand obviously. During the treatment, the expansion balloon 7 of different sizes should be selected according to the outer diameter of the cannula, the position of the perforation of the digestive tract, and the desired expansion size, so as to play a good role in fixing the cannula and prevent the digestive juice in the digestive tract from flowing into the cannula. Abdominal overflow. The lubricatingfluid input port 3 can be connected with a syringe, and the lubricating fluid is pushed into by the syringe. Theclosing cap 5 at the rear end of the outer sleeve can be tightly combined with the gastroscope to ensure that the lubricating fluid does not leak.

为了便于控制套管插入的位置，并确保套管固定后位置不发生改变，套管外表面设计有长度标记。In order to control the insertion position of the cannula and ensure that the position of the cannula does not change after it is fixed, the outer surface of the cannula is designed with a length mark.

Claims (3)

1. scope trocar sheath, it is characterized in that: comprise the inner tube and the outer tube that nest together, the rear and front end face closure of described inner tube and outer tube is connected, and other zones are cavity; The rear end face sealing link of described inner tube and outer tube is the bell mouth shape closing cover that expands, this closing cover is provided with gas input port and lubricant input port, be with some air bags on the outer tube, air bag links to each other with gas input port by the cavity between inner tube and the outer tube, and the lubricant input port is communicated to inner tube.

2. scope trocar sheath according to claim 1 is characterized in that: described inner tube is the helical Bourdon tube of embedded spring.

3. scope trocar sheath according to claim 1 is characterized in that: described outer tube is provided with scale mark.

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