Endoscopic catheter stent

Abstract

The utility model discloses an endoscopic catheter support, and relates to the technical field of endoscopic supports. The endoscopic catheter support of the utility model comprises: a base; a support, the support is fixed on the base; a first telescopic arm, the first telescopic arm is arranged perpendicular to the support, and one end of the first telescopic arm is connected to the upper end of the support, and the other end is provided with a first through hole for passing the endoscopic catheter; the upper inner wall of the first through hole is provided with an annular inclined guide surface, the top of the annular inclined guide surface is inclined in a direction away from its axis and extends to the top surface of the first telescopic arm; a pipeline transmission component, the pipeline transmission component includes a plurality of balls, and the plurality of balls are arranged circumferentially and rotatably mounted on the annular inclined guide surface; a pipeline clamping component. The utility model enables the catheter to smoothly enter the first through hole by setting the annular inclined guide surface, and the balls on the annular inclined guide surface can reduce the friction resistance when the catheter continues to be inserted, reduce the burden on medical staff, and more smoothly push the catheter deep into the patient's body.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscope brackets, in particular to an endoscope catheter bracket. Background Art

[0002] Digestive endoscopy plays an important role in the diagnosis of early digestive tract tumors and bile duct and pancreatic diseases. The stent in the prior art can fix and support the endoscope tube, reducing the burden on the hands of medical staff. However, the existing digestive endoscope stent clamping mechanism generally adopts a C-shaped open clamp, and an anti-slip pad and other anti-slip structures are also provided on the inner wall of the open clamp to increase the tightness of the clamping and prevent the endoscopic catheter from sliding. This results in friction resistance at the contact point between the endoscopic catheter and the clamping mechanism on the stent when the endoscopic catheter needs to be moved, affecting the normal delivery of the endoscopic catheter, requiring medical staff to increase hand strength, causing fatigue of medical staff. Utility Model Content

[0003] In view of this, the utility model aims to provide an endoscopic catheter stent to solve the technical problem that the existing stent generates friction with the clamping mechanism during the catheter pushing process, which is not conducive to the insertion of the catheter.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An endoscopic catheter stent, comprising:

[0006] Base;

[0007] A support column, wherein the support column is fixed on the base;

[0008] A first telescopic arm, wherein the first telescopic arm is arranged perpendicular to the pillar, and one end of the first telescopic arm is connected to the upper end of the pillar, and the other end is provided with a first through hole for passing the endoscope catheter; an annular inclined guide surface is provided on the inner wall of the upper end of the first through hole, and the top end of the annular inclined guide surface is inclined in a direction away from the axis thereof and extends to the top surface of the first telescopic arm;

[0009] A pipeline transmission component, the pipeline transmission component comprises a plurality of balls, the plurality of balls are circumferentially spaced and rotatably mounted on the annular inclined guide surface;

[0010] A pipe clamping assembly, the pipe clamping assembly includes an adjusting bolt, a first arc-shaped clamping plate and a second arc-shaped clamping plate, the first telescopic arm is provided with a threaded hole axially perpendicular to the first through-hole arrangement and connected to the inner cavity of the first through-hole at one end away from the support, the adjusting bolt is threadedly connected in the threaded hole, and its tail end extends into the inner cavity of the first through-hole, the first arc-shaped clamping plate is fixed to the tail end of the adjusting bolt, and the second arc-shaped clamping plate is fixed to the inner wall of the first through-hole on the opposite side of the first arc-shaped clamping plate.

[0011] The beneficial effects that can be achieved by the utility model are as follows: an annular inclined guide surface is provided at the upper end of the first perforation so that the top opening of the first perforation forms an open shape, which is conducive to the smooth entry of the endoscopic catheter into the first perforation. A ball is provided on the annular inclined guide surface to push the endoscopic catheter forward, reduce the resistance between the catheter and the first perforation, and reduce the burden on medical staff. After the catheter is in place, the adjustment bolt is rotated, and the first arc-shaped clamping plate approaches the second arc-shaped clamping plate to clamp the catheter to prevent the catheter from sliding. The utility model can assist the smooth insertion of the endoscopic catheter into the human body, and can clamp and fix the catheter after it is inserted into place, which is convenient for medical staff to operate and reduces the difficulty of operation.

[0012] Furthermore, the base includes an upper clamping plate and a lower clamping plate, an upper clamping groove is provided on the bottom surface of the upper clamping plate, and a lower clamping groove is provided on the top surface of the lower clamping plate corresponding to the upper clamping groove.

[0013] The beneficial effect that can be achieved by adopting the above technical solution is that the bracket can be clamped and fixed on the horizontal board of the operating table or the mobile cart.

[0014] Furthermore, the pillar includes a fixed column, an adjusting tube and an elastic limiting assembly. The fixed column is fixed to the top surface of the upper clamp plate, and a slot is opened on the top thereof with a length arranged along its axial direction. A plurality of limiting holes are opened on the side wall of the fixed column corresponding to the slot and spaced along its axial direction. The lower end of the adjusting tube can be slidably inserted into the slot along the length direction of the slot, and the elastic limiting assembly is fixed to the lower end of the adjusting tube and can be positioned and connected with the limiting hole. The first telescopic arm is fixed to the upper end of the adjusting tube.

[0015] The beneficial effect that can be achieved by adopting the above technical solution is that the height of the adjusting tube can be adjusted, thereby adjusting the height of the first telescopic arm on the adjusting tube.

[0016] Furthermore, the elastic limiting assembly includes a spring and two limiting pins, a first mounting hole is opened on the side wall of the lower end of the adjusting tube, and a second mounting hole is symmetrically opened on the other opposite side, the spring is placed in the inner cavity of the adjusting tube, the two limiting pins are respectively fixed at both ends of the spring, and the other ends thereof away from each other respectively pass through the first mounting hole and the second mounting hole and can be positioned and connected in the limiting holes.

[0017] The beneficial effects that can be achieved by adopting the above technical solution are: by pressing the limit pin, the spring is compressed, and the limit pin can be disengaged from the limit hole, so that the adjustment tube can slide in the slot, thereby adjusting the height of the first telescopic arm.

[0018] Furthermore, it also includes a second telescopic arm, which is arranged parallel to the first telescopic arm, and one end of which is connected to the fixing column, and the other end of which is provided with a second through hole corresponding to the lower side of the first through hole for passing the endoscopic catheter.

[0019] The beneficial effects that can be achieved by adopting the previous technical solution are as follows: the second telescopic arm plays a role in auxiliary positioning, which is more conducive to the smooth pushing of the catheter into the patient's body.

[0020] Furthermore, an adjusting screw for adjusting the height of the second telescopic arm is provided, and a plurality of adjusting holes are provided on the side wall of the fixed column at intervals along its axial direction. The adjusting screw is threadedly connected to one end of the second telescopic arm close to the fixed column and can be positioned and connected in the plurality of adjusting holes.

[0021] The beneficial effects that can be achieved by adopting the above technical solution: the height of the second telescopic arm is adjustable to meet the needs of different groups of people.

[0022] Furthermore, a bite device is provided, which is installed on the bottom surface of the end of the second telescopic arm away from the fixed column, and a bite device through hole coaxially arranged therewith is opened on the bite device corresponding to the second through hole.

[0023] The beneficial effects that can be achieved by adopting the above technical solution are: the mouthpiece is used to assist the patient in opening his mouth, and the relative fixation of the patient's head and the second telescopic arm can be ensured.

[0024] Furthermore, a lighting lamp bead is embedded in the second through hole.

[0025] The beneficial effects that can be achieved by adopting the above technical solution are: being used to illuminate the patient's oral cavity and facilitating accurate insertion of the catheter.

[0026] Furthermore, the first telescopic arm has the same structure as the second telescopic arm, and both include a fixed plate, a movable plate, and a locking bolt. The bottom surface of the fixed plate is provided with a long strip slide groove penetrating one end thereof, and one end of the movable plate can be slidably connected in the long strip slide groove along the length direction of the long strip slide groove, and can be fixed by the locking bolt.

[0027] The other end of the fixed plate of the first telescopic arm is fixed to the adjusting tube, and the other end of the movable plate is provided with the first through hole; the other end of the fixed plate of the second telescopic arm is fixed to the fixing column; and the other end of the movable plate is provided with the second through hole.

[0028] The beneficial effects that can be achieved by adopting the above technical solution are as follows: the lengths of the first telescopic arm and the second telescopic arm are both adjustable to meet different endoscopic intubation needs.

[0029] Furthermore, the movable plate includes a slide bar, a slider and a mounting plate. The slide bar can be slidably connected in the elongated slide groove along the length direction of the elongated slide groove; the slider is fixed to the bottom surface of the slide bar close to the fixed plate, and a plurality of threaded blind holes are spaced apart at the bottom of the fixed plate along the length direction of the elongated slide groove. The locking bolt can pass through the slide bar and be threadedly connected in the threaded blind hole; the mounting plate is fixed to the side of the slide bar away from the fixed plate.

[0030] The beneficial effects that can be achieved by adopting the above technical solution are as follows: the length of the first telescopic arm or the second telescopic arm can be changed by sliding cooperation between the slide bar and the long strip slide groove, and the slider on the slide bar can be fixed to the mounting plate by using locking bolts.

[0031] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses an endoscopic catheter stent, which has the following beneficial effects:

[0032] 1. The annular inclined guide surface is provided so that the catheter can smoothly penetrate into the first perforation. The balls on the annular inclined guide surface can reduce the friction resistance when the catheter enters the first perforation, reduce the burden on medical staff, and push the catheter deeper into the patient's body more smoothly.

[0033] 2. The catheter can be fixed between the first arc-shaped clamping plate and the second arc-shaped clamping plate by adjusting the bolt, thereby improving the firmness of clamping the catheter.

[0034] 3. The height of the support and the length of the first telescopic arm and the second telescopic arm are all adjustable, which improves the comfort of the bracket when used on different patients and facilitates operation.

[0035] 4. The mouthpiece is installed on the second telescopic arm, which is conducive to the patient's mouth opening and convenient for the positioning of the catheter, so that the catheter can be smoothly delivered and placed in the patient's mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 The present invention provides a three-dimensional structural schematic diagram of an endoscope catheter support.

[0038] Figure 2 This is a structural schematic diagram of the elastic limiting component provided by the utility model.

[0039] Figure 3This is a partial top view structural schematic diagram of the first telescopic arm provided by the utility model.

[0040] Figure 4 This is a schematic diagram of the front cross-sectional structure of the second telescopic arm provided by the utility model.

[0041] Figure 5 This is a right side sectional structural schematic diagram of the second telescopic arm provided by the utility model.

[0042] In the figure: 1, base, 11, upper clamping plate, 111, upper clamping groove, 12, lower clamping plate 121, lower clamping groove; 2, support column, 21, fixing column, 211, adjustment hole, 22, adjustment tube, 23, elastic limit assembly, 231, spring, 232, limit pin;

[0043] 3. first telescopic arm, 301, first perforation;

[0044] 4. Pipeline transmission assembly, 41. Ball bearing;

[0045] 5. Pipe clamping assembly, 51. Adjusting bolt, 52. First arc-shaped clamping plate, 53. Second arc-shaped clamping plate;

[0046] 6. second telescopic arm, 601. second through hole, 61. fixed plate, 62. movable plate, 621. slide bar, 622. slide block, 623. mounting plate, 63. locking bolt;

[0047] 7. Mouthpiece;

[0048] 8. Adjust the screw. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] See also Figure 1-Figure 5 This embodiment discloses an endoscopic catheter stent, comprising:

[0053] Base 1;

[0054] Pillar 2, pillar 2 is fixed on base 1;

[0055] The first telescopic arm 3 is arranged perpendicular to the support column 2, and one end of the first telescopic arm 3 is connected to the upper end of the support column 2, and the other end is provided with a first through hole 301 for passing the endoscope catheter; the inner wall of the upper end of the first through hole 301 is provided with an annular inclined guide surface, and the top end of the annular inclined guide surface is inclined in a direction away from the axis thereof and extends to the top surface of the first telescopic arm 3;

[0056] A pipeline transmission component 4, the pipeline transmission component 4 comprises a plurality of balls 41, the plurality of balls 41 are circumferentially spaced and rotatably mounted on the annular inclined guide surface;

[0057] The pipe clamping assembly 5 includes an adjusting bolt 51, a first arc-shaped clamping plate 52 and a second arc-shaped clamping plate 53. A threaded hole axially arranged perpendicular to the first through-hole 301 and connected to the inner cavity of the first through-hole 301 is opened at one end of the first telescopic arm 3 away from the pillar 2. The adjusting bolt 51 is threadedly connected in the threaded hole, and its tail end extends into the inner cavity of the first through-hole 301. The first arc-shaped clamping plate 52 is fixed to the tail end of the adjusting bolt 51, and the second arc-shaped clamping plate 53 is fixed to the inner wall of the first through-hole 301 on the opposite side of the first arc-shaped clamping plate 52.

[0058] An annular inclined guide surface is provided at the upper end of the first through hole 301 so that the top opening of the first through hole is open, which is conducive to the smooth entry of the endoscope catheter into the first through hole 301. A ball 41 is provided on the annular inclined guide surface to push the endoscope catheter forward to penetrate, reduce the resistance between the endoscope catheter and the first through hole 301, and reduce the burden on medical staff. After the catheter is in place, the adjusting bolt 51 is rotated, and the first arc clamping plate 52 moves closer to the second arc clamping plate 53 to clamp the catheter to prevent the catheter from sliding.

[0059] In one specific embodiment, see Figure 1The base 1 includes an upper clamping plate 11 and a lower clamping plate 12. An upper clamping groove 111 is provided on the bottom surface of the upper clamping plate 11, and a lower clamping groove 121 is provided on the top surface of the lower clamping plate 12 at a position corresponding to the upper clamping groove 111. Thus, the bracket can be clamped and fixed on the horizontal board of the operating table or the mobile cart.

[0060] In a specific embodiment, the support column 2 includes a fixed column 21, an adjusting tube 22 and an elastic limiting assembly 23. The fixed column 21 is fixed on the top surface of the upper clamping plate 11, and a slot is provided on the top thereof, and the length of the slot is arranged along the axial direction thereof. A plurality of limiting holes are provided at intervals along the axial direction thereof at the corresponding slot on the side wall of the fixed column 21. The lower end of the adjusting tube 22 can be slidably inserted into the slot along the length direction of the slot. The elastic limiting assembly 23 is fixed to the lower end of the adjusting tube 22 and can be positioned and connected with the limiting holes. The first telescopic arm 3 is fixed to the upper end of the adjusting tube 22. Thus, the height of the adjusting tube 22 can be adjusted, and thus the height of the first telescopic arm 3 on the adjusting tube 22 can be adjusted.

[0061] In a specific embodiment, if Figure 2 As shown, the elastic limiting assembly 23 includes a spring 231 and two limiting pins 232. A first mounting hole is provided on the side wall of the lower end of the adjusting tube 22, and a second mounting hole is symmetrically provided on the other side opposite thereto. The spring 231 is placed in the inner cavity of the adjusting tube 22. The two limiting pins 232 are respectively fixed at both ends of the spring 231, and the other ends thereof that are away from each other respectively pass through the first mounting hole and the second mounting hole and can be positioned and connected in the limiting holes. Thus, by pressing the limiting pin 232, the spring 231 is compressed, and the limiting pin 232 can be disengaged from the limiting hole, so that the adjusting tube 22 can slide in the slot, thereby adjusting the height of the first telescopic arm 3.

[0062] In a specific embodiment, the limiting pin 232 includes a pressing portion and a limiting portion. The pressing portion can be inserted into the first mounting hole or the second mounting hole. The limiting portion is fixed between the pressing portion and the spring, and its outer diameter is larger than the inner diameter of the first mounting hole or the second mounting hole.

[0063] In one specific embodiment, see Figure 1 , further comprising a second telescopic arm 6, which is arranged parallel to the first telescopic arm 3, and one end of which is connected to the fixing column 21, and the other end of which is provided with a second through hole 601 for passing the endoscope catheter corresponding to the lower side of the first through hole 301. Thus, the second telescopic arm 6 plays a role of auxiliary positioning, which is more conducive to smoothly pushing the catheter into the patient's body.

[0064] In a specific embodiment, an adjusting screw 8 for adjusting the height of the second telescopic arm 6 is further provided, and a plurality of adjusting holes 211 are provided at intervals along the axial direction of the side wall of the fixing column 21, and the adjusting screw 8 is threadedly connected to one end of the second telescopic arm 6 close to the fixing column 21, and can be positioned and connected in the plurality of adjusting holes 211. Thus, the height of the second telescopic arm 6 is adjustable, which is suitable for the needs of different groups of people.

[0065] In one specific embodiment, see Figure 1 and Figure 4 , a mouthpiece 7 is also provided, which is mounted on the bottom surface of the second telescopic arm 6 at one end away from the fixed column 21, and a mouthpiece perforation coaxially arranged with the second perforation 601 is provided on the mouthpiece 7. Thus, the mouthpiece assists the patient to open his mouth, and can ensure the relative fixation of the patient's head and the second telescopic arm.

[0066] In a specific embodiment, a lighting bead is embedded in the second through hole 601. Thus, the lighting bead is used to illuminate the patient's oral cavity, facilitating accurate insertion of the catheter.

[0067] In one specific embodiment, see Figure 4 , Figure 5 The first telescopic arm 3 and the second telescopic arm 6 have the same structure, both of which include a fixed plate 61, a movable plate 62 and a locking bolt 63. A long strip slide groove penetrating through one end of the fixed plate 61 is provided on the bottom surface of the fixed plate 61. One end of the movable plate 62 can be slidably connected in the long strip slide groove along the length direction of the long strip slide groove and can be fixed by the locking bolt 63.

[0068] The other end of the fixed plate 61 of the first telescopic arm 3 is fixed on the adjusting tube 22, and the other end of the movable plate 62 is provided with a first through hole 301; the other end of the fixed plate 61 of the second telescopic arm 6 is fixed on the fixing column 21; and the other end of the movable plate 62 is provided with a second through hole 601. Thus, the lengths of the first telescopic arm and the second telescopic arm can be adjusted to meet different endoscopic intubation needs.

[0069] In a specific embodiment, the movable plate 62 includes a slide bar 621, a slider 622 and a mounting plate 623. The slide bar 621 can be slidably connected in the long strip slide groove along the length direction of the long strip slide groove; the slider 622 is fixed to the bottom surface of the slide bar 621 close to the fixed plate 61. The bottom of the fixed plate 61 is provided with a plurality of threaded blind holes 611 spaced apart along the length direction of the long strip slide groove. The locking bolt 63 can pass through the slider 622 and be threadedly connected in the threaded blind hole 611; the mounting plate 623 is fixed to the side of the slide bar 621 away from the fixed plate 61. Figure 5As shown, the cross-sections of the slide bar 621 and the long strip slide groove are both T-shaped to prevent the slide bar from falling out of the slide groove. Thus, the length of the first telescopic arm 3 or the second telescopic arm 6 can be changed by the sliding cooperation between the slide bar 621 and the long strip slide groove, and the slider 622 on the slide bar 621 can be fixed to the mounting plate 623 by the locking bolt 63.

[0070] After the endoscope catheter support of the utility model is installed at the corresponding position, the height of the pillar 2 and the length of the first telescopic arm 3 and the second telescopic arm 6 are adjusted, and the adjustment is locked and fixed. The endoscope catheter smoothly passes through the first perforation 301 under the conveyance of the ball 41 on the annular inclined guide surface, and enters the patient's mouth along the second perforation 601. The catheter is convenient to insert, which reduces the burden on medical staff and helps to avoid discomfort to the patient due to unsmooth catheter insertion.

[0071] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0072] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An endoscopic catheter stent, characterized in that: include: Base (1); A support (2), wherein the support (2) is fixed on the base (1); A first telescopic arm (3), the first telescopic arm (3) being arranged perpendicular to the pillar (2), one end of which is connected to the upper end of the pillar (2), and the other end of which is provided with a first through hole (301) for passing the endoscope catheter; an annular inclined guide surface is provided on the inner wall of the upper end of the first through hole (301), the top end of the annular inclined guide surface is inclined in a direction away from the axis thereof and extends to the top surface of the first telescopic arm (3); A pipeline transmission component (4), the pipeline transmission component (4) comprising a plurality of balls (41), the plurality of balls (41) being circumferentially spaced and rotatably mounted on the annular inclined guide surface; A pipe clamping assembly (5), the pipe clamping assembly (5) comprising an adjusting bolt (51), a first arc-shaped clamping plate (52) and a second arc-shaped clamping plate (53); the first telescopic arm (3) is provided with a threaded hole arranged axially perpendicular to the first through hole (301) and connected to the inner cavity of the first through hole (301) at one end away from the support (2); the adjusting bolt (51) is threadedly connected in the threaded hole, and its rear end extends into the inner cavity of the first through hole (301); the first arc-shaped clamping plate (52) is fixed to the rear end of the adjusting bolt (51); and the second arc-shaped clamping plate (53) is fixed to the inner wall of the first through hole (301) on the opposite side of the first arc-shaped clamping plate (52).

2. An endoscopic catheter stent according to claim 1, characterized in that: The base (1) comprises an upper clamping plate (11) and a lower clamping plate (12); an upper clamping groove (111) is provided on the bottom surface of the upper clamping plate (11), and a lower clamping groove (121) is provided on the top surface of the lower clamping plate (12) at a position corresponding to the upper clamping groove (111).

3. An endoscopic catheter stent according to claim 2, characterized in that: The support column (2) comprises a fixed column (21), an adjusting tube (22) and an elastic limiting assembly (23); the fixed column (21) is fixed on the top surface of the upper clamping plate (11), and a slot is provided on the top thereof, the length of which is arranged along its axial direction; a plurality of limiting holes are provided on the side wall of the fixed column (21) at intervals along its axial direction corresponding to the slot; the lower end of the adjusting tube (22) can be slidably inserted into the slot along the length direction of the slot; the elastic limiting assembly (23) is fixed to the lower end of the adjusting tube (22) and can be positioned and connected with the limiting hole; the first telescopic arm (3) is fixed to the upper end of the adjusting tube (22).

4. The endoscopic catheter stent according to claim 3, characterized in that: The elastic limiting assembly (23) comprises a spring (231) and two limiting pins (232); a first mounting hole is provided on the side wall of the lower end of the adjusting tube (22), and a second mounting hole is symmetrically provided on the other side opposite thereto; the spring (231) is placed in the inner cavity of the adjusting tube (22); the two limiting pins (232) are respectively fixed at two ends of the spring (231), and the other ends thereof which are away from each other respectively pass through the first mounting hole and the second mounting hole and can be positioned and connected in the limiting holes.

5. The endoscopic catheter stent according to claim 3, characterized in that: It also includes a second telescopic arm (6), which is arranged parallel to the first telescopic arm (3), and one end of which is connected to the fixing column (21), and the other end of which is provided with a second through hole (601) corresponding to the lower side of the first through hole (301) for passing the endoscopic catheter.

6. The endoscopic catheter stent according to claim 5, characterized in that: An adjusting screw (8) for adjusting the height of the second telescopic arm (6) is also provided. A plurality of adjusting holes (211) are provided on the side wall of the fixing column (21) at intervals along its axial direction. The adjusting screw (8) is threadedly connected to one end of the second telescopic arm (6) close to the fixing column (21) and can be positioned and connected in the plurality of adjusting holes (211).

7. The endoscopic catheter stent according to claim 5, characterized in that: A bite device (7) is also provided, and the bite device (7) is installed on the bottom surface of the second telescopic arm (6) at one end away from the fixed column (21), and a bite device through hole coaxially arranged therewith is opened on the bite device (7) corresponding to the second through hole (601).

8. The endoscopic catheter stent according to claim 5, characterized in that: A lighting lamp bead is embedded and installed in the second through hole (601).

9. The endoscopic catheter stent according to claim 5, characterized in that: The first telescopic arm (3) and the second telescopic arm (6) have the same structure, and both include a fixed plate (61), a movable plate (62) and a locking bolt (63). A long strip slide groove penetrating one end of the fixed plate (61) is provided on the bottom surface thereof, and one end of the movable plate (62) can be slidably connected to the long strip slide groove along the length direction of the long strip slide groove and can be fixed by the locking bolt (63). The other end of the fixed plate (61) of the first telescopic arm (3) is fixed on the adjusting tube (22), and the other end of the movable plate (62) is provided with the first through hole (301); the other end of the fixed plate (61) of the second telescopic arm (6) is fixed on the fixing column (21); and the other end of the movable plate (62) is provided with the second through hole (601).

10. The endoscopic catheter stent according to claim 9, characterized in that: The movable plate (62) includes a slide bar (621), a slider (622) and a mounting plate (623); the slide bar (621) can be slidably connected in the long strip slide groove along the length direction of the long strip slide groove; the slider (622) is fixed on the bottom surface of the slide bar (621) close to the fixed plate (61); the bottom of the fixed plate (61) is provided with a plurality of threaded blind holes (611) spaced apart along the length direction of the long strip slide groove; the locking bolt (63) can pass through the slide bar (622) and be threadedly connected in the threaded blind hole (611); the mounting plate (623) is fixed on the side of the slide bar (621) away from the fixed plate (61).

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