Flexible endoscope assisted overtube

Abstract

The present application relates to endoscope auxiliary tool field, especially to a soft endoscope auxiliary cannula, which can solve the problem that the tip of the cannula cannot be bent to adjust the angle laterally, and is beneficial to the comprehensive diagnosis and treatment of the lesion site. It comprises a flexible stainless steel braided hose placed on one side of the endoscope pipeline, a plurality of fixed clamps cooperating with the endoscope pipeline are vertically and spaced apart on one side of the stainless steel braided hose; an arc-shaped protrusion is fixedly connected with the bottom of the pull rope, a connecting pipe is fixedly connected between the upper and lower parts of the stainless steel braided hose, a first sleeve protruding outward is embedded in the connecting pipe, an upper extension pipe is fixedly connected on the upper part of the stainless steel braided hose, a second sleeve protruding outward is embedded in the upper extension pipe, the pull rope passes through the first sleeve, enters the stainless steel braided hose, then passes out of the second sleeve and is fixedly connected with the handle. A plugging piece is further arranged on the top of the stainless steel braided hose on the upper side of the handle. It is simple to operate and convenient to use.

Description

Technical Field

[0001] This invention relates to the field of endoscopic auxiliary devices, specifically a flexible endoscopic auxiliary outer tube. Background Technology

[0002] Currently, clinically used endoscopes have only one or two working channels, allowing only one or two endoscopic accessories to be inserted. This limits the working channel to only one or two points. However, in practice, different lesion targets may require different points, making this type of endoscope unsuitable for diagnostic and treatment needs. Chinese invention patent application number 202120051424.6 discloses a balloon-type auxiliary suction cannula for endoscopes. This can add a biopsy channel outside the endoscope without repeatedly inserting the endoscope, saving time, or damaging the patient's pharynx. This allows for the rapid aspiration of blood clots and locating the bleeding point.

[0003] The aforementioned auxiliary suction cannula can aspirate blood clots to locate the bleeding point. However, a drawback was discovered during its use: the tip cannot be bent laterally to adjust the angle, which hinders comprehensive diagnosis and treatment of the lesion. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a flexible endoscope-assisted outer cannula, which solves the problem that the tip of the outer cannula cannot be bent to adjust the angle laterally, thus facilitating comprehensive diagnosis and treatment of lesions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flexible endoscope auxiliary sheath, comprising... It includes a flexible stainless steel braided hose placed on one side of the endoscope tubing, and a number of fixing clips that cooperate with the endoscope tubing are vertically spaced on one side of the stainless steel braided hose. The stainless steel braided hose is divided into upper and lower parts. The lower part of the stainless steel braided hose has a lower extension tube fixed at the lower end. The bottom of the lower extension tube has a sloping and smooth arc structure. An arc protrusion is fixed on the lower extension tube and is fixedly connected to the bottom of a pull rope. A connecting tube is fixedly connected between the upper and lower parts of the stainless steel braided hose. A first sleeve protruding outward is embedded in the connecting tube through the inside and outside. An upper extension tube is fixedly connected to the upper side of the upper part of the stainless steel braided hose. A second sleeve protruding outward is embedded in the upper extension tube through the inside and outside. The pull rope passes through the first sleeve into the stainless steel braided hose and then passes through the second sleeve and is fixedly connected to the bottom surface of the handle that is slidably sleeved on the upper extension tube. The upper extension tube on the upper side of the handle is also provided with a sealing element.

[0006] As a preferred technical solution, the sealing component includes an end cap with an upper opening fixed to the top surface of the upper extension tube, a vertical through hole embedded in the center of the bottom surface of the end cap, one side of the outer surface of the end cap being fixedly connected to one end of the flexible connection part, and the other end of the flexible connection part being provided with a plug that cooperates with the end cap.

[0007] As a preferred technical solution, the bottom surface of the lower extension tube is flush with the bottom surface of the endoscope tubing.

[0008] As a preferred technical solution, the fixing clip is a C-shaped structure with a side opening.

[0009] As a preferred technical solution, the first sleeve and the second sleeve are provided with sealing sleeves that cooperate with the pull rope.

[0010] As a preferred technical solution, the pull rope is a steel wire rope.

[0011] As a preferred technical solution, the handle includes a sliding sleeve that is slidably sleeved on the upper extension tube. The upper and lower ends of the sliding sleeve are respectively provided with a first annular boss and a second annular boss, and the width of the first annular boss is greater than the width of the second annular boss.

[0012] As a preferred technical solution, the outer surface of the stainless steel braided hose is also provided with an ultra-slippery fluoroplastic coating.

[0013] As a preferred technical solution, the upper side of the handle is provided with a limiting structure that cooperates with the handle.

[0014] As a preferred technical solution, the limiting structure includes a slide rod fixed to the upper surface of the first annular boss. The slide rod can slide through the upper third annular boss. The third annular boss is fixed to the outer surface of the upper extension tube. A limiting bolt that cooperates with the slide rod is screwed inward on the side of the third annular boss outside the slide rod.

[0015] Compared with the prior art, the present invention provides a flexible endoscope auxiliary cannula, which has the following beneficial effects: 1. This invention uses a first sleeve and a second sleeve. A pull rope passes through the first sleeve into a stainless steel braided flexible tube and then out through the second sleeve, and is fixedly connected to the bottom surface of the handle that slides vertically on the upper extension tube. In use, the stainless steel braided flexible tube can be placed on the endoscope tube by a fixing clip. The stainless steel braided flexible tube is not limited to one, thus providing channels for multiple endoscope accessories. By pulling the handle at the top upward, the pull rope can pull the lower end of the lower extension tube, thereby tilting the bottom of the lower extension tube to one side, thus achieving the function of lateral angle adjustment.

[0016] 2. The present invention includes a sealing component comprising an end cap with an upper opening fixed to the top surface of the upper extension tube, a vertical through hole embedded in the center of the bottom surface of the end cap, one outer surface of the end cap being fixedly connected to one end of a flexible connecting part, and a plug that mates with the end cap at the other end of the flexible connecting part. In use, when no endoscope accessories are inserted into the upper extension tube, the plug can be placed over the end cap to prevent leakage of water and air from the digestive tract.

[0017] 3. The present invention includes a sliding rod fixed to the upper surface of the first annular boss through a limiting structure. The sliding rod can slide through the upper third annular boss, which is fixed to the outer surface of the upper extension tube. A limiting bolt that cooperates with the sliding rod is screwed inward on the side of the third annular boss outside the sliding rod. When in use, when the handle is pulled up, the sliding rod moves upward at the same time. After the outer tube angle is adjusted, it can be positioned by the limiting bolt, which is convenient for the operator. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention, form part of this application: Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present invention; Figure 2 for Figure 1 Enlarged structural diagram of stainless steel braided hose; Figure 3 for Figure 2 Enlarged structural diagram of the central sealing component; Figure 4 This is a schematic diagram showing the connection between the pull rope and the upper extension tube. Figure 5 This is a three-dimensional structural diagram of the second embodiment of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the middle limiting structure.

[0019] The diagram shows: 1. Endoscope; 11. Tubing; 2. Stainless steel braided flexible hose; 21. Arc-shaped structure; 23. Fixing clip; 24. Pull cord; 25. Arc-shaped protrusion; 26. First sleeve; 27. Second sleeve; 28. Handle; 281. Sliding sleeve; 282. First annular boss; 283. Second annular boss; 29. ​​Sealing component; 291. End cap; 292. Through hole; 293. Flexible connection; 294. Plug; 3. Limiting structure; 31. Sliding rod; 32. Third annular boss; 33. Limiting bolt. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] like Figures 1 to 4 As shown, a flexible endoscope auxiliary sheath includes a flexible stainless steel braided hose 2 placed on one side of the endoscope 1 tubing 11. Several fixing clips 23, which mate with the endoscope 1 tubing 11, are vertically spaced along one side of the stainless steel braided hose 2 (the stainless steel braided hose 2 can bend with the endoscope 1 tubing 11). The stainless steel braided hose 2 is divided into upper and lower parts. A lower extension tube is fixed to the lower end of the lower part of the stainless steel braided hose 2, and the lower extension tube is integrally connected to the lower end of the lower part of the stainless steel braided hose 2. The bottom of the lower extension tube has a sloping, smooth arc-shaped structure 21, and an arc-shaped protrusion 25 is fixedly provided on the lower extension tube. The arc-shaped protrusion 25 is fixedly connected to the bottom of a pull rope 24. A connecting tube is fixedly connected between the upper and lower parts of the stainless steel braided hose 2, and the connecting tube is integrally connected to the upper and lower parts of the stainless steel braided hose 2. A first sleeve 26 protruding outwards is embedded throughout the connecting pipe. An upper extension pipe is fixedly connected to the upper part of the stainless steel braided hose 2. The upper part of the stainless steel braided hose 2 is integrally connected to the upper extension pipe. A second sleeve 27 protruding outwards is embedded throughout the upper extension pipe. A pull rope 24 passes through the first sleeve 26 into the stainless steel braided hose 2 and then exits through the second sleeve 27, and is fixedly connected to the bottom surface of the handle 28, which is slidably fitted onto the upper extension pipe. A sealing element 29 is also provided at the top of the upper extension pipe above the handle 28.

[0022] The sealing component 29 includes an end cap 291 fixed to the top surface of the upper extension tube with an upper opening. A vertical through hole 292 is embedded in the center of the bottom surface of the end cap 291. One side of the outer surface of the end cap 291 is fixedly connected to one end of the flexible connection part 293. The other end of the flexible connection part 293 is provided with a plug 294 that cooperates with the end cap 291.

[0023] The bottom surface of the lower extension tube is flush with the bottom surface of the endoscope tube 11.

[0024] The retaining clip 23 has a C-shaped structure with a side opening, allowing the stainless steel braided hose 2 to be detached.

[0025] The first sleeve 26 and the second sleeve 27 are provided with sealing sleeves (silicone sleeves, which can seal the passage of the pull rope 24) that cooperate with the pull rope 24.

[0026] The pull rope 24 is a steel wire rope.

[0027] The handle 28 includes a sliding sleeve 281 that is slidably sleeved on the upper extension tube. The upper and lower ends of the sliding sleeve 281 are respectively provided with a first annular boss 282 and a second annular boss 283. The width of the first annular boss 282 is greater than the width of the second annular boss 283.

[0028] The outer surface of the stainless steel braided hose 2 is also coated with an ultra-slippery fluoroplastic coating. Fluoroplastics are alkane polymers in which some or all of the hydrogen is replaced by fluorine. They have excellent waterproof, non-stick, low coefficient of friction, and good self-lubricating properties. By coating the surface of the stainless steel braided hose with a fluoroplastic film, the surface of the stainless steel braided hose 2 can have good waterproof and non-stick properties, reducing damage to the gastrointestinal wall.

[0029] In use, the stainless steel braided flexible tube 2 can be secured to the endoscope tube 11 using the fixing clip 23. The stainless steel braided flexible tube 2 is not limited to one type, thus providing access to multiple endoscope accessories. By pulling upwards using the top handle 28, the pull cord 24 can be pulled on the lower end of the lower extension tube, causing the bottom of the lower extension tube to tilt to one side, thereby achieving lateral angle adjustment. When no endoscope accessories are inserted, the upper extension tube can be sealed with the plug 294 at the end cap 291 to prevent leakage of water and air from the digestive tract. Example 2

[0030] like Figure 5 , Figure 6 As shown, a limiting structure 3 that cooperates with the handle 28 is provided on the upper side of the handle 28.

[0031] The limiting structure 3 includes a slide rod 31 fixed to the upper surface of the first annular boss 282. The slide rod 31 can slide through the upper third annular boss 32. The third annular boss 32 is fixed to the outer surface of the upper extension tube. A limiting bolt 33 that cooperates with the slide rod 31 is screwed inward on the side of the third annular boss 32 outside the slide rod 31.

[0032] When in use, when the handle 28 is pulled up, the slide bar 31 moves upward at the same time. After the angle of the outer sleeve 2 is adjusted, it can be positioned by the limit bolt 33, which facilitates the operation of the staff.

[0033] All components used in this invention are general standard parts or components known to those skilled in the art, and their structures and principles are well known to those skilled in the art.

[0034] It should be noted that, in this document, the terms "first," "second," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] The structures, proportions, sizes, etc. illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible endoscope auxiliary sheath, characterized in that: It includes a flexible stainless steel braided hose placed on one side of the endoscope tubing, and a number of fixing clips that cooperate with the endoscope tubing are vertically spaced on one side of the stainless steel braided hose. The stainless steel braided hose is divided into upper and lower parts. The lower part of the stainless steel braided hose has a lower extension tube fixed at the lower end. The bottom of the lower extension tube has a sloping and smooth arc structure. An arc protrusion is fixed on the lower extension tube and is fixedly connected to the bottom of a pull rope. A connecting tube is fixedly connected between the upper and lower parts of the stainless steel braided hose. A first sleeve protruding outward is embedded in the connecting tube through the inside and outside. An upper extension tube is fixedly connected to the upper side of the upper part of the stainless steel braided hose. A second sleeve protruding outward is embedded in the upper extension tube through the inside and outside. The pull rope passes through the first sleeve into the stainless steel braided hose and then passes through the second sleeve and is fixedly connected to the bottom surface of the handle that is slidably sleeved on the upper extension tube. The upper extension tube on the upper side of the handle is also provided with a sealing element.

2. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The sealing component includes an end cap with an upper opening fixed to the top surface of the upper extension tube. A vertical through hole is embedded in the center of the bottom surface of the end cap. One side of the outer surface of the end cap is fixedly connected to one end of the flexible connection part, and the other end of the flexible connection part is provided with a plug that cooperates with the end cap.

3. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The bottom surface of the lower extension tube is flush with the bottom surface of the endoscope tubing.

4. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The fixing clip has a C-shaped structure with a side opening.

5. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The first and second sleeves are provided with sealing sleeves that cooperate with the pull rope.

6. The flexible endoscope auxiliary sheath according to claim 1, characterized in that: The pull rope is a steel wire rope.

7. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The handle includes a sliding sleeve that is slidably fitted onto the upper extension tube. The upper and lower ends of the sliding sleeve are respectively provided with a first annular boss and a second annular boss, and the width of the first annular boss is greater than the width of the second annular boss.

8. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The outer surface of the stainless steel braided hose is also coated with an ultra-slippery fluoroplastic coating.

9. The flexible endoscope auxiliary outer sleeve according to claim 1, characterized in that: The upper side of the handle is provided with a limiting structure that cooperates with the handle.

10. A flexible endoscope auxiliary sheath according to claim 9, characterized in that: The limiting structure includes a slide rod fixed to the upper surface of the first annular boss. The slide rod can slide through the upper third annular boss. The third annular boss is fixed to the outer surface of the upper extension tube. A limiting bolt that cooperates with the slide rod is screwed inward on the side of the third annular boss outside the slide rod.

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