阅读说明：本技术 一种防止弯折时塌陷的内窥镜器械通道管及内窥镜 (Endoscope instrument channel tube capable of preventing collapse during bending and endoscope ) 是由 不公告发明人 于 2019-12-31 设计创作，主要内容包括：本发明属于内窥镜技术领域,具体涉及一种防止弯折时塌陷的内窥镜器械通道管及内窥镜。其技术方案为：一种防止弯折时塌陷的内窥镜器械通道管,包括从内到外依次设置的铁氟龙管、支撑管、热缩管,支撑管包括固定连接的螺纹管和连接管,螺纹管位于内窥镜导管的端部位置。本发明提供了一种防止弯折时塌陷的内窥镜器械通道管及内窥镜。(The invention belongs to the technical field of endoscopes, and particularly relates to an endoscope instrument channel tube capable of preventing collapse during bending and an endoscope. The technical scheme is as follows: an endoscope instrument channel tube capable of preventing collapse during bending comprises a Teflon tube, a supporting tube and a heat shrink tube which are sequentially arranged from inside to outside, wherein the supporting tube comprises a threaded tube and a connecting tube which are fixedly connected, and the threaded tube is located at the end part of an endoscope guide tube. The invention provides an endoscope instrument channel tube capable of preventing collapse during bending and an endoscope.)

1. An endoscopic instrument passage tube for preventing collapse upon bending, characterized in that: the endoscope catheter comprises a Teflon tube (1), a supporting tube (2) and a heat shrinkable tube (3) which are sequentially arranged from inside to outside, wherein the supporting tube (2) comprises a threaded tube (21) and a connecting tube (22) which are fixedly connected, and the threaded tube (21) is positioned at the end part of an endoscope catheter (5).

2. An endoscopic instrument access tube which is resistant to collapse upon bending as defined in claim 1 wherein: the connecting tube (22) is in the shape of a spiral.

3. An endoscopic instrument access tube which is resistant to collapse upon bending as defined in claim 1 wherein: the connecting pipe (22) is a net-shaped braided pipe.

4. An endoscopic instrument access tube which is resistant to collapse upon bending as defined in claim 1 wherein: the heat shrinkable tube (3) is made of one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

5. An endoscopic instrument access tube which is resistant to collapse upon bending as defined in claim 1 wherein: the flat wire mesh-shaped braided tube is made of one of stainless steel, nickel titanium, copper and aluminum.

6. An endoscope for preventing an instrument channel tube from collapsing during bending comprises an endoscope handheld end (4), wherein the endoscope handheld end (4) is connected with a guide tube (5), the guide tube (5) comprises an insertion section (51), a passive bending section (52) and an active bending section (53) which are sequentially arranged, and one end, far away from the passive bending section (52), of the insertion section (51) is connected with the endoscope handheld end (4); the method is characterized in that: the utility model discloses a pipe, including pipe (5), pipe (2), pyrocondensation pipe (3), pipe (5) endotheca is equipped with the apparatus channel pipe, the apparatus channel pipe includes Teflon pipe (1), stay tube (2), pyrocondensation pipe (3) that set gradually from inside to outside, stay tube (2) are including fixed connection's screwed pipe (21) and connecting pipe (22), the one end parallel and level of passive bending section (52) are kept away from to the one end of screwed pipe (21) and active bending section (53), the one end parallel and level of active bending section (53) are kept away from to the other end of screwed pipe (21) and passive bending section (52.

7. An endoscope that resists collapse when bent according to claim 6, wherein: the connecting tube (22) is in the shape of a spiral.

8. An endoscope that resists collapse when bent according to claim 6, wherein: the connecting pipe (22) is a net-shaped braided pipe.

9. An endoscope that resists collapse when bent according to claim 6, wherein: the heat shrinkable tube (3) is made of one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

10. An endoscope that resists collapse when bent according to claim 6, wherein: the flat wire mesh-shaped braided tube is made of one of stainless steel, nickel titanium, copper and aluminum.

Technical Field

The invention belongs to the technical field of endoscopes, and particularly relates to an endoscope instrument channel tube capable of preventing collapse during bending and an endoscope.

Background

The endoscope is an optical instrument which can enter a human body through a natural cavity or a wound cavity of the human body to carry out diagnosis, detection and treatment, and comprises a gastroscope, an enteroscope, a bronchoscope, a laparoscope and the like. Endoscopes, which are typically comprised of a rigid or flexible tube, a fiber optic illumination system, and a viewing system, are provided with one or more working channels, which are water and water access channels, an instrument channel tube, which is provided with a surgeon accessible access port, through which medical instruments (including graspers, biopsy forceps, scissors, etc.) are passed into the instrument channel tube of the endoscope and into the field of view, by which the tissue, sample tissue for biopsy, or individual tissue, etc. is grasped.

The utility model discloses a patent application number is CN 201720778392.3's utility model patent discloses an endoscope that prevents apparatus entry port discharge, including the endoscope body, be equipped with the apparatus passage pipe on the endoscope body, the cover is equipped with the pincers way cap on the entry seat of advancing of apparatus passage pipe, the pincers say and seted up on the cap with the communicating apparatus entry port of apparatus passage pipe, the cover is equipped with a collection bag on the entry seat of advancing of apparatus passage pipe, the sack department of collecting the bag is equipped with the support ring for prop open the sack of collecting the bag, the collection bag is used for collecting the discharge liquid through apparatus passage pipe and the outflow of entering port department. The invention can collect the human excrement or tissue fluid flowing out through the inlet port, avoid polluting the operating table and dirtying the clothes of medical personnel, and reduce the risk of infection of the medical personnel.

The instrument channel tube of the existing endoscope is only made of a common Teflon tube and is of a single-layer structure. The end of the endoscope catheter is provided with an active bending section and a passive bending section, the active bending section is mainly realized by the function of a coil pipe, and the passive bending section is mainly realized by using softer materials or structures. When the instrument channel tube is of a single-layer structure, the instrument channel tube cannot be smoothly bent at the active bending section and the passive bending section, or the instrument channel tube is easy to collapse when bent, so that instruments cannot pass through the instrument channel tube.

Disclosure of Invention

In order to solve the above problems of the prior art, an object of the present invention is to provide an endoscopic instrument passage tube and an endoscope which are prevented from collapsing at the time of bending.

The technical scheme adopted by the invention is as follows:

an endoscope instrument channel tube capable of preventing collapse during bending comprises a Teflon tube, a supporting tube and a heat shrink tube which are sequentially arranged from inside to outside, wherein the supporting tube comprises a threaded tube and a connecting tube which are fixedly connected, and the threaded tube is located at the end part of an endoscope guide tube.

Preferably, the shape of the connecting tube is a spiral.

Preferably, the connecting tube is a mesh woven tube.

Preferably, the material of the heat shrinkable tube is one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

Preferably, the material of the flat wire mesh-like braided tube is one of stainless steel, nickel titanium, copper and aluminum.

An endoscope for preventing an instrument channel tube from collapsing during bending comprises an endoscope handheld end, wherein the endoscope handheld end is connected with a guide tube, the guide tube comprises an insertion section, a passive bending section and an active bending section which are sequentially arranged, and one end of the insertion section, which is far away from the passive bending section, is connected with the endoscope handheld end; the method is characterized in that: the utility model discloses a catheter, including catheter, catheter endotheca, instrument passageway pipe, stay tube, pyrocondensation pipe, the stay tube includes fixed connection's screwed pipe and connecting pipe, and the one end of screwed pipe and the one end parallel and level that passive bending section was kept away from to the one end parallel and level that the other end of screwed pipe and passive bending section set gradually from inside to outside.

Preferably, the shape of the connecting tube is a spiral.

Preferably, the connecting tube is a mesh woven tube.

Preferably, the material of the heat shrinkable tube is one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET.

Preferably, the material of the flat wire mesh-like braided tube is one of stainless steel, nickel titanium, copper and aluminum.

The invention has the beneficial effects that:

1. the instrument channel tube comprises a Teflon tube, a supporting tube and a heat shrinkable tube which are sequentially arranged from inside to outside. The supporting tube comprises a threaded tube, and when a guide tube of the endoscope is bent, the instrument channel tube with the threaded tube can be naturally bent without collapse. Because the threaded pipe is positioned at the end part of the endoscope guide pipe, the threaded pipe can be overlapped with the active bending section and the passive bending section of the endoscope guide pipe, when the guide pipe of the endoscope is actively bent or passively bent, the threaded pipe can be correspondingly bent, the threaded pipe cannot collapse, and the instrument channel pipe cannot collapse. When the endoscope catheter is bent, the instrument channel tube in the catheter can not collapse all the time, so that the instrument can smoothly pass through the instrument channel tube, and the instrument can be ensured to accurately obtain tissues, sample tissues for biopsy, or independent tissues and the like.

2. The shape of connecting pipe is the heliciform, and the connecting pipe also is the screw thread pipeline section promptly, and stay tube integrated into one piece this moment, it is more convenient to install. The threaded pipe section can well support the instrument channel pipe section corresponding to the insertion section of the catheter of the endoscope, so that all sections of the instrument channel pipe cannot collapse, and normal use of the instrument channel pipe is guaranteed.

3. When the connecting pipe is a net-shaped woven pipe, the connecting pipe can play a good supporting role for the instrument channel pipe, so that the instrument channel pipe is prevented from collapsing, and the inner cavity of the instrument channel pipe is ensured to have enough space. The grasping forceps, the biopsy forceps, the scissors and the like can smoothly pass through the instrument channel tube, and the instrument can be guaranteed to accurately grasp tissues, sample tissues for biopsy, or independent tissues and the like. The mesh-shaped braided tube can reinforce the instrument passage tube, so that the instrument passage tube has enough strength and is prevented from deforming. Wherein the reticular braided tube is a round wire braided tube or a flat wire braided tube.

4. The material of pyrocondensation pipe is one in TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC, PET, and then the pyrocondensation pipe can protect the stay tube and the teflon pipe of inlayer, avoids stay tube and the impaired condition of teflon pipe. The heat shrinkable tube has the functions of high-temperature shrinkage, softness, flame retardance, insulation and corrosion prevention, is soft enough, and is convenient to extend into the corresponding part of a human body along with the endoscope catheter. The heat shrink tube is corrosion-resistant, avoids damage and ensures long-term use.

5. The flat wire mesh-shaped braided tube is made of one of stainless steel, nickel titanium, copper and aluminum, namely the flat wire mesh-shaped braided tube is a metal braided tube, so that the flat wire mesh-shaped braided tube has enough strength, the instrument channel tube can be stably supported, and the condition that the instrument channel tube collapses is avoided.

6. The endoscope comprises an endoscope handheld end, wherein the endoscope handheld end is connected with a guide pipe and comprises an insertion section, a passive bending section and an active bending section which are sequentially arranged. The catheter is internally sleeved with an instrument channel tube, and the instrument channel tube comprises a Teflon tube, a supporting tube and a heat-shrinkable tube which are sequentially arranged from inside to outside. The supporting tube comprises a threaded tube, and when a guide tube of the endoscope is bent, the instrument channel tube with the threaded tube can be naturally bent without collapse. Because the threaded pipe is positioned at the end part of the endoscope guide pipe, the threaded pipe can be overlapped with the active bending section and the passive bending section of the endoscope guide pipe, when the guide pipe of the endoscope is actively bent or passively bent, the threaded pipe can be correspondingly bent, the threaded pipe cannot collapse, and the instrument channel pipe cannot collapse. When the endoscope catheter is bent, the instrument channel tube in the catheter can not collapse all the time, so that the instrument can smoothly pass through the instrument channel tube, and the instrument can be ensured to accurately obtain tissues, sample tissues for biopsy, or independent tissues and the like.

7. In the endoscope, the connecting pipe of the instrument channel pipe in the catheter is in a spiral shape, namely the connecting pipe is also a threaded pipe section, and the supporting pipe is integrally formed at the moment, so that the endoscope is more convenient to mount. The threaded pipe section can well support the instrument channel pipe section corresponding to the insertion section of the catheter of the endoscope, so that all sections of the instrument channel pipe cannot collapse, and normal use of the instrument channel pipe is guaranteed.

8. In the endoscope, when the connecting pipe of the instrument channel pipe is a net-shaped braided pipe, the connecting pipe can play a good supporting role on the instrument channel pipe, so that the instrument channel pipe is prevented from collapsing, and the inner cavity of the instrument channel pipe is ensured to have enough space. The grasping forceps, the biopsy forceps, the scissors and the like can smoothly pass through the instrument channel tube, and the instrument can be guaranteed to accurately grasp tissues, sample tissues for biopsy, or independent tissues and the like. The mesh-shaped braided tube can reinforce the instrument passage tube, so that the instrument passage tube has enough strength and is prevented from deforming. Wherein the reticular braided tube is a round wire braided tube or a flat wire braided tube.

9. In the endoscope, the heat-shrinkable tube of the instrument channel tube is made of one of TPE, TPU, PU, PTFE, LDPE, HDPE, PEBAX, PE, EVA, PVC and PET, so that the heat-shrinkable tube can protect the inner supporting tube and the Teflon tube, and the supporting tube and the Teflon tube are prevented from being damaged. The heat shrinkable tube has the functions of high-temperature shrinkage, softness, flame retardance, insulation and corrosion prevention, is soft enough, and is convenient to extend into the corresponding part of a human body along with the endoscope catheter. The heat shrink tube is corrosion-resistant, avoids damage and ensures long-term use.

10. In the endoscope, the flat wire mesh-shaped braided tube of the instrument channel tube is made of one of stainless steel, nickel titanium, copper and aluminum, namely the flat wire mesh-shaped braided tube is a metal braided tube, so that the flat wire mesh-shaped braided tube has enough strength, the instrument channel tube can be stably supported, and the condition that the instrument channel tube collapses is avoided.

The advantages of the invention are not limited to this description, but are described in more detail in the detailed description for better understanding.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the specific details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the detailed description that follows.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of an instrument channel tube of the present invention;

FIG. 2 is a schematic structural view of a threaded pipe;

FIG. 3 is a schematic structural view of the endoscope of the present invention;

fig. 4 is a cross-sectional view of a catheter.

In the figure: 1-a teflon tube; 2-supporting a tube; 3-heat shrink tube; 4-endoscope hand-held end; 5-a catheter; 21-a threaded pipe; 22-connecting tube; 51-an insertion section; 52-passive bend section; 53-active bending section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.