Outer sleeve and endoscope equipment

Abstract

The utility model discloses an outer sleeve and endoscope equipment. The outer sleeve is used for an endoscope. Wherein the outer sleeve comprises a tube body and a protective sleeve, the tube body is provided with a mirror body channel, the mirror body channel is eccentrically arranged on the tube body, the thinner side of the tube body is a first side wall, and the thicker side of the tube body is a second side wall; a net-shaped hollow section is arranged on the first side wall; one or more instrument channels are formed in the second side wall, extend in the axial direction of the tube body and are used for allowing surgical instruments to pass through; the protective sleeve is sleeved outside the pipe body; and the net-shaped hollow section is wrapped. When the outer sleeve is sleeved on endoscope equipment for use, the netted hollow section is arranged, so that the tube body can be conveniently bent along with the endoscope body of the endoscope, and the flexibility is improved; meanwhile, the instrument channel for placing the surgical instruments is arranged on the thicker side of the tube body, so that a plurality of surgical instruments can be conveniently operated at the same time, and the operability and the efficiency of the surgery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscope equipment, in particular to an outer sleeve tube and an endoscope equipment. Background Art

[0002] As a medical diagnostic instrument, an endoscope equipment can enter a living body and capture images of a lesion site through a camera encapsulated at its distal end. With the increasing use of endoscope equipment, the usage scenarios of endoscope equipment are more and more, and the corresponding functional requirements are also more and more. For example, in endoscopic submucosal dissection (ESD), the lesion position is directly observed through an endoscope, and instruments such as a high-frequency electric knife, a hemostatic clip, a biopsy forceps, an injection needle, and a snare are used in cooperation to completely dissect the diseased mucosa from the submucosa layer. The operation time is short and the trauma is small.

[0003] Most of the existing endoscope equipment has only one channel for passing various instruments required for surgery, which will greatly limit the operability of the surgery during actual surgical operations and lead to an extended operation time. Summary of the Utility Model

[0004] In view of the above deficiencies of the prior art, the purpose of the present utility model is to provide an outer sleeve tube and an endoscope equipment, aiming to increase the number of surgical instruments that can be operated simultaneously by adding an outer sleeve tube outside the endoscope body, improve the convenience of surgical operations, and improve the surgical efficiency.

[0005] The technical solution of the present utility model is as follows:

[0006] An outer sleeve tube for an endoscope; wherein, the outer sleeve tube includes a tube body and a protective sleeve, the tube body is provided with a lens body channel, the lens body channel is eccentrically arranged on the tube body, the side with a thinner thickness of the tube body is the first side wall, and the side with a thicker thickness of the tube body is the second side wall; a mesh-shaped hollowed-out section is provided on the first side wall; one or more instrument channels are provided on the second side wall, and the instrument channels extend along the axial direction of the tube body for passing surgical instruments; the protective sleeve is sleeved outside the tube body and wraps the mesh-shaped hollowed-out section.

[0007] Optionally, there are at least two instrument channels, and at least two instrument channels are arranged at intervals along the circumferential direction of the tube body.

[0008] Optionally, a plurality of incisions penetrating through to the lens body channel are provided on the first side wall, and grid bars are formed between adjacent incisions. A plurality of grid bars are arranged crosswise on the first side wall to form the mesh-shaped hollowed-out section.

[0009] Optionally, the outer sleeve tube includes an operation end head, and the operation end head is connected to the proximal end of the tube body; wherein, the mesh-shaped hollowed-out section is located at the distal end of the tube body.

[0010] Optionally, the operating head end includes a main body and a Luer connector. A main channel for docking with the tube body and a secondary channel communicating with the instrument channel are provided on the main body; the main channel docks with the lens body channel for inserting the lens body of the endoscope; the Luer connector is connected to the secondary channel.

[0011] Optionally, an anti-overflow film is provided in the main channel, and the anti-overflow film is located at one end of the main channel facing away from the tube body.

[0012] Optionally, the secondary channel includes a connecting pipe section and a docking pipe section arranged in sequence. The connecting pipe section is provided on the main body for connecting the Luer connector; one end of the docking pipe section is connected to the connecting pipe section, and the other end is connected to the tube body for communicating the instrument channel; wherein, the docking pipe section is any one of a stainless steel pipe, a nickel-titanium alloy pipe, and an aluminum alloy pipe.

[0013] Optionally, the front end of the main channel protrudes from the surface of the main body to form a connecting end head, and a snap ring is protrudingly provided on the outer surface of the connecting end head; the tube body is inserted into the connecting end head and clamped on the snap ring; wherein, the operating head end further includes a heat shrinkable tube, one end of the heat shrinkable tube is sleeved on the proximal end of the tube body, and the other end is sleeved on the connecting end head for tightening the tube body.

[0014] Optionally, the tube body is a thermoplastic polyurethane elastomer eccentric tube; and / or, the protective sleeve is a thermoplastic polyurethane elastomer protective sleeve.

[0015] The present application also discloses an endoscope device, which includes an outer sleeve tube as described in any one of the above. The endoscope device has a flexible lens body, and the lens body is detachably sleeved in the lens body channel of the outer sleeve tube.

[0016] Compared with the prior art, the embodiments of the present utility model have the following advantages:

[0017] The outer sleeve tube disclosed in the present utility model is made into an eccentric type, and the wall thicknesses on both sides are different along the radial direction of the tube body. A mesh-shaped hollowed-out section is provided on the thinner first side wall to achieve the effect of imitating a snake bone structure, which is beneficial to improving the flexibility of the outer sleeve tube and facilitating the bending use of the outer sleeve tube; an instrument channel is provided on the thicker second side wall to pass various surgical instruments, and various surgical instruments can be used simultaneously in cooperation with the lens body of the endoscope for surgical operations, thereby improving the operation convenience of the surgery and shortening the surgical time.

[0018] From another perspective, setting the instrument channel can also make the second side wall a hollow structure, thereby enhancing the flexibility of the second side wall. Therefore, the mesh hollowed-out section is arranged opposite to the instrument channel without interference, and it is beneficial to balance the wall thickness on both sides of the outer sleeve, making the overall flexibility of the outer sleeve good, facilitating bending, reducing the resistance when the endoscope body turns, facilitating large-angle observation and instrument operation, and improving the convenience of surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the outer sleeve in the present invention;

[0021] Figure 2 is Figure 1 Partial enlarged view of part A in;

[0022] Figure 3 Axial sectional view of a part of the tube body in the present invention;

[0023] Figure 4 Exploded view of the structure of the operation end in the present invention;

[0024] Figure 5 Axial sectional view of the operation end in the present invention.

[0025] Wherein, 10, tube body; 101, lens body channel; 11, first side wall; 111, mesh hollowed-out section; 112, incision; 113, grid strip; 12, second side wall; 121, instrument channel; 20, protective sleeve; 30, operation end; 31, main body; 311, main channel; 312, sub-channel; 3121, connecting pipe section; 3122, docking pipe section; 313, connecting end; 3131, snap ring; 32, Luer connector; 33, anti-overflow film; 34, heat shrinkable tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Referring to Figure 1 , Figure 2 and Figure 3 , in an embodiment of the present application of the utility model, a sheath tube for an endoscope is disclosed; wherein, the sheath tube includes a tube body 10 and a protective sleeve 20, the tube body 10 is provided with a lens body channel 101, the lens body channel 101 is eccentrically arranged on the tube body 10, the side of the tube body 10 with a thinner thickness is the first side wall 11, and the side of the tube body 10 with a thicker thickness is the second side wall 12; a mesh hollowed-out section 111 is provided on the first side wall 11; one or more instrument channels 121 are provided on the second side wall 12, and the instrument channels 121 extend along the axial direction of the tube body 10 for passing surgical instruments; the protective sleeve 20 is sleeved outside the tube body 10 and wraps the mesh hollowed-out section 111.

[0028] The endoscope disclosed in this embodiment is used in medical examinations or medical surgeries and has an optical system and an operating system. During operation, the sheath tube wraps the lens body of the endoscope and enters the body cavity, and the lesion condition of the cavity is observed through the lens body. At the same time, one or more instrument channels 121 are provided on the sheath tube to insert one or more surgical instruments to achieve multi-functional operations such as lighting, surgery, irrigation, and aspiration.

[0029] Specifically, the surgical instruments placed in the sheath tube disclosed in this embodiment include but are not limited to high-frequency electrosurgical knives, hemostatic clips, biopsy forceps, injection needles, snare devices, etc.

[0030] Specifically, the lens body of the endoscope in this embodiment can be set as a flexible endoscope, and its lens body part can be bent to change the observation direction and expand the observation range, thereby increasing the use efficiency. The sheath tube disclosed in this embodiment is made eccentrically. Along the radial direction of the sheath tube, the wall thicknesses on both sides of the tube body 10 are different. A mesh hollowed-out section 111 is provided on the thinner first side wall 11 to achieve the effect of imitating the snake bone structure, which is beneficial to improving the flexibility of the sheath tube and facilitating the synchronous bending of the sheath tube along with the bending of the lens body. Preferably, the mesh hollowed-out section 111 is arranged at the bending part of the lens body of the endoscope.

[0031] An instrument channel 121 is provided on the relatively thick second side wall 12 to pass a variety of surgical instruments, enabling the surgical instruments to cooperate with the endoscope body passing through the inside of the tube body 10 for surgical operations. Compared with traditional endoscopes that can only insert surgical instruments through one channel on the endoscope body and require repeated disassembly and assembly of different surgical instruments during the operation, the outer sleeve disclosed in this application is sleeved on the endoscope body, which can improve the convenience of surgical operations and shorten the operation time.

[0032] Specifically, setting the instrument channel 121 can make the second side wall 12 a hollow structure, thereby reducing the stiffness and increasing the flexibility of the second side wall 12 to a certain extent, enabling the tube body 10 to bend along with the bending of the endoscope body, facilitating the endoscope body to rotate in any angle and adjust the observation direction.

[0033] Therefore, in this embodiment, the mesh-like hollowed-out section 111 and the instrument channel 121 are arranged opposite to each other without interference, and it is beneficial to balance the wall thickness on both sides of the outer sleeve, making the overall flexibility of the outer sleeve good, facilitating bending, adjusting the angles of endoscope body observation and instrument operation, and improving the convenience of surgical operations.

[0034] Specifically, as Figure 1 shown, the protective sleeve 20 can be set in a balloon shape with small diameters at both ends and a large diameter in the middle part; both ends of the protective sleeve 20 are connected to the outer surface of the tube body 10, for example, by adhesive bonding, so that the protective sleeve 20 is closely connected to the tube body 10, forming a sealed space inside the protective sleeve 20. The middle part of the protective sleeve 20 is wide, leaving a clearance space between it and the outer surface of the tube body 10, reducing the resistance generated by the side wall extrusion during the bending of the endoscope body of the tube body 10, facilitating the free bending of the endoscope body, and enabling a larger bending angle.

[0035] Specifically, as an implementation manner of this embodiment, it is disclosed that the tube body 10 and the protective sleeve 20 can be made of the same type of material. For example, the tube body 10 is a thermoplastic polyurethane elastomer eccentric tube, and the protective sleeve 20 is a thermoplastic polyurethane elastomer protective sleeve 20. Using the same material for production is beneficial to saving costs and reducing production difficulty. Of course, this embodiment only exemplifies the types of the tube body 10 and the protective sleeve 20. During actual production and use, according to needs, the tube body 10 or the protective sleeve 20 can be set to be made of thermoplastic polyurethane elastomer; or, other types of polymer materials can be used to manufacture the tube body 10 or the protective sleeve 20. As long as the technical effects disclosed in this application can be achieved, as an alternative solution to this embodiment, it should also be within the scope protected by this application.

[0036] Specifically, thermoplastic polyurethane elastomer, abbreviated as TPU, is a type of elastomer that can be plasticized by heating and dissolved by solvents. It has excellent comprehensive properties such as high strength, high toughness, wear resistance, and oil resistance, and good processing performance. Therefore, the tube body 10 and the protective sleeve 20 disclosed in this embodiment have the advantages of good stability and long service life.

[0037] Specifically, as Figure 2 shown, as another implementation manner of this embodiment, it is disclosed that there are at least two instrument channels 121 provided in the instrument channel 121, and the at least two instrument channels 121 are arranged at intervals in the circumferential direction of the tube body 10; wherein, along the direction towards the first side wall 11, the caliber of the instrument channel 121 gradually decreases.

[0038] In this embodiment, by providing multiple instrument channels 121, it is convenient to simultaneously insert various surgical instruments into the cavity. For example, a high-frequency electrocautery and a hemostatic clip are inserted simultaneously. The hemostatic clip is used to clamp the target tissue to be excised, and then the cutting operation is performed through the high-frequency electrocautery, realizing the coordinated cooperation of multiple surgical instruments, increasing the number of surgical instruments that can be operated simultaneously, and improving the surgical efficiency.

[0039] Specifically, the side wall of the tube body 10 is continuous and is generally set as a circular tube. Therefore, along the direction from the first side wall 11 to the second side wall 12, the wall thickness of the tube body 10 gradually increases. At the position farthest from the first side wall 11, the wall thickness is the largest, and the closer to the first side wall 11, the smaller the wall thickness. Therefore, when setting at least two instrument channels 121, the instrument channel 121 with the largest caliber can be set at the place farthest from the first side wall 11, and then towards the first side wall 11, instrument channels 121 with smaller calibers can be arranged at intervals. During use, according to the size of the surgical instrument, it can be inserted into different instrument channels 121 for use, maintaining operation flexibility.

[0040] Specifically, three instrument channels 121 are provided in the instrument channel 121 disclosed in this embodiment. The instrument channel 121 with the largest caliber is set at the position farthest from the first side wall 11 on the second side wall 12. The other two instrument channels 121 have the same caliber and are symmetrically distributed on both sides of the instrument channel 121 with the largest caliber. By arranging the three instrument channels 121 symmetrically, the number of surgical instruments that can be inserted simultaneously is increased, facilitating the simultaneous operation of multiple instruments. At the same time, the sufficient wall thickness of the tube body 10 is maintained, avoiding too large a volume occupied by the hollowing out and preventing the side wall of the tube body 10 from being damaged.

[0041] Specifically, as Figure 3 shown, in the first side wall 11 disclosed in this embodiment, there are a plurality of incisions 112 penetrating through to the lens body channel 101. The adjacent incisions 112 form grid bars 113, and several grid bars 113 are arranged crosswise on the first side wall 11 to form the mesh hollowed-out section 111.

[0042] In this embodiment, a notch 112 is formed on the first side wall 11 through a hollowing process, removing some materials to reduce the local stiffness and facilitate bending. During actual use, to prevent impurities or liquids from entering the lens body channel 101 and affecting the movement and use of the lens body, and at the same time, to reduce the friction and extrusion between the hollowed-out part of the tube body 10 and the side wall of the living body cavity, this embodiment provides a protective sleeve 20 to cover the mesh hollowed-out section 111.

[0043] As Figure 1 and Figure 4 shown, as another implementation manner of this embodiment, it is disclosed that the outer sleeve tube includes an operation end 30, and the operation end 30 is connected to the proximal end of the tube body 10; wherein, the mesh hollowed-out section 111 is located at the distal end of the tube body 10.

[0044] In this embodiment, the tube body 10 is connected to the lens body of the endoscope through the operation end 30. Setting the operation end 30 facilitates docking the proximal end of the tube body 10 and maintaining stability. During use, the operation end 30 remains stable, improving the stability of the tube body 10 and preventing relative sliding between the outer sleeve tube and the lens body.

[0045] A mesh hollowed-out section 111 is provided at the distal end of the tube body 10 to adapt to the local bending of the lens body. The side walls at other positions of the tube body 10 maintain the structural integrity, thereby reducing friction and extrusion with the cavity and avoiding damage.

[0046] The mesh hollowed-out section 111 disclosed in this embodiment is mainly provided corresponding to the bending position of the lens body. By correspondingly arranging the mesh hollowed-out section 111 in this part of the area, the bending part of the lens body can be bent flexibly.

[0047] As Figure 4 shown, as another implementation manner of this embodiment, it is disclosed that the operation end 30 includes a main body 31 and a Luer connector 32. A main channel 311 for docking with the tube body 10 and a sub-channel 312 communicating with the instrument channel 121 are provided on the main body 31; the main channel 311 is docked with the lens body channel 101 for inserting the lens body of the endoscope; the Luer connector 32 is connected to the sub-channel 312.

[0048] The main channel 311 disclosed in this embodiment is used to insert the lens body of the endoscope to introduce the lens body of the endoscope into the tube body 10. The sub-channel 312 is provided with a Luer connector 32 at the port and can be connected by an adhesive method. Utilizing the quick-disassembly feature of the Luer connector 32, it is convenient to quickly insert or remove the corresponding type of surgical instrument as needed, improving the operation flexibility during the surgical process.

[0049] As Figure 4 andFigure 5 As shown, as another implementation manner of this embodiment, it is disclosed that an anti-overflow film 33 is provided in the main channel 311, and the anti-overflow film 33 is located at one end of the main channel 311 away from the tube body 10.

[0050] In this embodiment, the anti-overflow film 33 is provided to prevent the liquid in the cavity from flowing back. Specifically, the anti-overflow film 33 is a circular thin film soft glue with a small hole in the middle for inserting the lens body. The aperture of the small hole is smaller than the diameter of the lens body, so that when the lens body is inserted, it is in close contact with the side wall of the small hole, thereby being pressed tightly to increase airtightness. In this embodiment, a raised ring is provided on the outer periphery of the anti-overflow film 33. The anti-overflow film 33 is arranged on the side of the main body 31 away from the tube body 10 and is fixed at the port of the main channel 311 by a screw cap.

[0051] As Figure 5 shown, as another implementation manner of this embodiment, it is disclosed that the sub-channel 312 includes a connecting pipe section 3121 and a docking pipe section 3122 arranged in sequence. The connecting pipe section 3121 is arranged on the main body 31 for connecting the Luer connector 32; one end of the docking pipe section 3122 is connected to the connecting pipe section 3121, and the other end is connected to the tube body 10 for communicating the instrument channel 121; wherein, the docking pipe section 3122 is any one of a stainless steel pipe, a nickel-titanium alloy pipe, and an aluminum alloy pipe.

[0052] In this embodiment, the disclosed connecting pipe section 3121 can be integrally formed with the main body 31, or the connecting pipe section 3121 can be directly formed by hollowing out the main body 31. The docking pipe section 3122 is made of a metal pipe and is inserted on the connecting pipe section 3121. The main body 31 and the connecting pipe section 3121 can be set as structures made of plastic materials. The docking pipe section 3122 is a metal pipe body with high hardness, stable structure, not easy to deform, and the inner wall of the pipe is smooth, so the passing performance is good, ensuring that the surgical instrument smoothly passes through the operating end 30 and enters the tube body 10.

[0053] Specifically, in this embodiment, the docking pipe section 3122 and the connecting pipe section 3121 can be filled and cured with thermosensitive glue or photosensitive glue to maintain a stable connection.

[0054] Again, as Figure 4As shown, as another implementation manner of this embodiment, it is disclosed that the distal end of the main channel 311 protrudes from the surface of the main body 31 and forms a connection end 313, and a snap ring 3131 is protrudingly provided on the outer surface of the connection end 313; the tube body 10 is inserted into the connection end 313 and is snapped onto the snap ring 3131; wherein, the operation end 30 further includes a heat shrinkable tube 34, one end of the heat shrinkable tube 34 is sleeved and fixed on the proximal end of the tube body 10, and the other end is sleeved and fixed on the connection end 313 for tightening the tube body 10.

[0055] In this embodiment, by providing the snap ring 3131, the connection stability between the tube body 10 and the connection end 313 is increased, and the risk of loosening is reduced. At the same time, by providing the heat shrinkable tube 34 to wrap the connection position between the tube body 10 and the connection end 313, the airtightness is increased, which can not only further increase the connection stability, but also keep the connection sealed, avoid air leakage and liquid leakage, and reduce pollution.

[0056] As another embodiment of the present application, an endoscope device is disclosed, wherein, it includes the outer sleeve tube as described in any one of the above. Specifically, the endoscope device has a flexible lens body, and the lens body is detachably sleeved in the lens body channel 101 of the outer sleeve tube.

[0057] In summary, the present application discloses an outer sleeve tube for an endoscope; wherein, the outer sleeve tube includes a tube body 10 and a protective sleeve 20, the tube body 10 is provided with a lens body channel 101, the lens body channel 101 is eccentrically arranged on the tube body 10, the side of the tube body 10 with a thinner thickness is the first side wall 11, and the side of the tube body 10 with a thicker thickness is the second side wall 12; a mesh hollowed-out section 111 is provided on the first side wall 11; one or more instrument channels 121 are provided on the second side wall 12, and the instrument channels 121 extend along the axial direction of the tube body 10 for passing surgical instruments; the protective sleeve 20 is sleeved outside the tube body 10 and wraps the mesh hollowed-out section 111. The outer sleeve tube disclosed in this embodiment is made into an eccentric type, and the wall thicknesses on both sides are different along the radial direction of the outer sleeve tube. A mesh hollowed-out section 111 is provided on the thinner first side wall 11, simulating the effect of a snake bone structure, which is beneficial to improving the flexibility of the outer sleeve tube and facilitating the bending use of the outer sleeve tube; one or more instrument channels 121 are provided on the thicker second side wall 12 to pass one or more surgical instruments, so that the surgical instruments can cooperate with the lens body passing through the inside of the tube body 10 for surgical operations, thereby improving the operation convenience of the surgery and shortening the surgery time.

[0058] It should be noted that, without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other.

[0059] It should be noted that the specific structure and working principle of the present utility model are introduced by taking the outer sleeve of the endoscope as an example, but the application of the present utility model is not limited to the outer sleeve of the endoscope, and it can also be applied to the production and use of other similar workpieces.

[0060] It should be understood that the present utility model is not limited to the precise structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

[0061] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An outer sleeve for an endoscope; characterized in that: The outer sleeve comprises: The tube body is provided with a scope channel, the scope channel is eccentrically arranged on the tube body, the side of the tube body with a thinner thickness is a first side wall, and the side of the tube body with a thicker thickness is a second side wall; the first side wall is provided with a mesh hollow section; the second side wall is provided with one or more instrument channels, the instrument channels extend along the axial direction of the tube body and are used to pass surgical instruments; The protective sleeve is sleeved outside the tube body and wraps the mesh hollow section.

2. The outer sleeve according to claim 1, characterized in that: There are at least two instrument channels, and the at least two instrument channels are arranged at intervals along the circumferential direction of the tube body.

3. The outer sleeve according to claim 1, characterized in that: The first side wall is provided with a plurality of cutouts penetrating into the mirror body channel, grid bars are formed between adjacent cutouts, and a plurality of the grid bars are cross-arranged on the first side wall to form the mesh hollow section.

4. The outer sleeve according to claim 1, characterized in that: The outer sleeve includes an operating end connected to the proximal end of the tube body; Wherein, the mesh hollow section is located at the distal end of the tube body.

5. The outer sleeve according to claim 4, characterized in that: The operating end comprises: A main body, wherein the main body is provided with a main channel connected to the tube body, and a secondary channel connected to the instrument channel; the main channel is connected to the scope channel and is used to insert the scope of the endoscope; A Luer connector is connected to the secondary channel.

6. The outer sleeve according to claim 5, characterized in that: An anti-overflow membrane is arranged in the main channel, and the anti-overflow membrane is located at one end of the main channel away from the tube body.

7. The outer sleeve according to claim 5, characterized in that: The secondary channel includes a connecting pipe section and a butt pipe section which are arranged in sequence, wherein the connecting pipe section is arranged on the main body and is used to connect the Luer connector; one end of the butt pipe section is connected to the connecting pipe section, and the other end of the butt pipe section is connected to the pipe body, so as to communicate with the instrument channel; Wherein, the butt-jointed pipe section is any one of a stainless steel pipe, a nickel-titanium alloy pipe and an aluminum alloy pipe.

8. The outer sleeve according to claim 5, characterized in that: The distal end of the main channel protrudes from the surface of the main body and forms a connecting end, and a clamping ring is protruding from the outer surface of the connecting end; the tube body is plugged into the connecting end and clamped on the clamping ring; Wherein, the operating end also includes a heat shrink tube, one end of which is sleeved on the proximal end of the tube body, and the other end is sleeved on the connecting end, so as to tighten the tube body.

9. The outer sleeve according to any one of claims 1 to 8, characterized in that: The tube body is a thermoplastic polyurethane elastomer eccentric tube; and / or the protective sleeve is a thermoplastic polyurethane elastomer protective sleeve.

10. An endoscope device, characterized in that: The endoscope device comprises an outer sleeve as described in any one of claims 1 to 9, wherein the endoscope device has a flexible mirror body, and the mirror body is detachably mounted in a mirror body channel of the outer sleeve.

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