An adjustment unit and an endoscope

Abstract

The present invention relates to the technical field of medical devices, and discloses an adjustment unit and an endoscope. The adjustment unit includes an operating mechanism and at least two sets of spring tubes, and the spring tubes are arranged on the insertion tube; the distal end of the spring tube is connected to the insertion tube; the proximal end of the spring tube is configured to have a first state and a second state, and can be switched between the first state and the second state; when the spring tube is in the second state, the proximal end of the spring tube is movably matched with the insertion tube, and the proximal end of the spring tube can bend along with the insertion tube and move along the insertion tube; when the spring tube is in the first state, the spring tube is connected to the operating mechanism, and the spring tube can move under the drive of the operating mechanism and change the stiffness of the spring tube. The endoscope includes the adjustment unit. Through the above solution, the present invention can solve the problem that when the insertion tube is in a bent state in the related art, it is not easy for the insertion tube to maintain stability in the bent state.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an adjustment unit and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device, which is an inspection device that can directly enter the natural ducts of the human body and can provide sufficient diagnostic information for doctors to treat diseases. After detecting a lesion, the doctor needs to continuously operate the endoscope handle to keep the shape of the insertion component unchanged in order to continuously observe the lesion. After long-term operation of the endoscope handle, it is easy to cause doctor fatigue.

[0003] Currently, in order to meet the requirement that the insertion component can maintain its shape unchanged in the human body cavity, an adjustment unit is used in the related art to change the force required when the insertion tube bends. However, when the insertion tube is in a bent state, it is not easy for the insertion tube to maintain stability in the bent state. Summary of the Invention

[0004] The present application discloses an adjustment unit and an endoscope to solve the problem that when the insertion tube is in a bent state in the related art, it is not easy for the insertion tube to maintain stability in the bent state.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application discloses an adjustment unit, including an operating mechanism and at least two sets of spring tubes, the spring tubes are arranged on the insertion tube; the distal end of the spring tube is connected to the insertion tube;

[0007] The proximal end of the spring tube is configured to have a first state and a second state, and can be switched between the first state and the second state;

[0008] When the spring tube is in the second state, the proximal end of the spring tube is movably matched with the insertion tube, and the proximal end of the spring tube can bend along with the insertion tube and move along the insertion tube;

[0009] When the spring tube is in the first state, the spring tube is connected to the operating mechanism, and the spring tube can be driven by the operating mechanism to move and change the stiffness of the spring tube.

[0010] In a second aspect, the present application discloses an endoscope, including the adjustment unit in the first aspect.

[0011] The technical solutions adopted by the present invention can achieve the following beneficial effects:

[0012] The adjustment unit of the present application, in the initial state, the proximal end of the bellows is in the second state and moves within the insertion tube as the insertion tube bends; when it is necessary to adjust the stiffness of the insertion tube, the proximal end of the bellows switches from the second state to the first state, and the operating mechanism enables the bellows to be compressed. When the proximal end of the bellows is in the second state, the bending of the insertion tube causes the proximal end of the bellows to move within the insertion tube, enabling the bellows to adapt to the bending of the insertion tube and automatically adjust. During the bending process of the insertion tube, it does not affect the compression state of the bellows as much as possible, thereby minimizing the difference in the deformation amounts of the bellows near the inner side and the outer side within the insertion tube, so as to make the forces on both sides of the insertion tube as balanced as possible during the bending process. When the proximal end of the bellows is in the first state, the proximal ends of the bellows near the inner side and the outer side within the insertion tube can be pushed by the operating mechanism, and the bellows on both sides within the insertion tube are compressed at approximately the same speed as much as possible, ensuring that the forces on the relative two sides in the radial direction of the insertion tube are as balanced as possible during the stiffness adjustment process of the insertion tube. Description of the Drawings

[0013] 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 of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 is an axonometric view of an endoscope disclosed in some embodiments of the present invention;

[0015] Figure 2 is a schematic structural view of the insertion tube in a horizontal state disclosed in some embodiments of the present invention;

[0016] Figure 3 is a schematic structural view of the insertion tube in a bent state disclosed in some embodiments of the present invention;

[0017] Figure 4 is a cross-section of the endoscope handle disclosed in some embodiments of the present invention Figure 1 ;

[0018] Figure 5 is Figure 4 an enlarged view of part A in

[0019] Figure 6 is a cross-section of the endoscope handle disclosed in some embodiments of the present invention Figure 2 ;

[0020] Figure 7 is Figure 6 an enlarged view of part B in

[0021] Figure 8 Is an axonometric view of the limiting member disclosed in some embodiments of the present invention;

[0022] Figure 9 Is a schematic diagram of the connection relationship between the unlocking member and the supporting member disclosed in some embodiments of the present invention;

[0023] Figure 10 Is a schematic diagram of the structure of the cylindrical section of the endoscope handle disclosed in some embodiments of the present invention;

[0024] Figure 11 Is an axonometric view of the knob disclosed in some embodiments of the present invention;

[0025] Figure 12 Is an axonometric view of the unlocking member disclosed in some embodiments of the present invention;

[0026] Figure 13 Is a schematic diagram of the state of the spring tube when the insertion tube is in a horizontal state disclosed in some embodiments of the present invention;

[0027] Figure 14 Is a schematic diagram of the state of the spring tube when the insertion tube is in a bent state disclosed in some embodiments of the present invention;

[0028] Figure 15 Is a schematic diagram of the state of the spring tube when the insertion tube is in a bent state in the prior art.

[0029] In the figure:

[0030] 100 - Adjusting unit, 110 - Spring tube, 120 - Limiting member, 121 - Movable tube, 122 - Fixed tube, 123 - Second limiting portion, 124 - Buckle, 130 - Operating mechanism, 131 - Unlocking member, 132 - Supporting member, 133 - Knob, 134 - Elastic member, 135 - Connecting member, 136 - First limiting portion, 137 - Through hole, 138 - Spiral groove, 1381 - Horizontal portion, 1382 - Spiral portion;

[0031] 200 - Insertion assembly, 210 - Insertion tube, 220 - Guide member;

[0032] 300 - Endoscope, 310 - Endoscope handle, 311 - Cylindrical section, 312 - Through groove, 320 - Instrument tube. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.

[0034] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0035] In various embodiments of this application, "proximal end" and "distal end" refer to the relative distances of each component from the user in the usage environment. Among them, the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0036] The inventor found in use that, as Figure 15 shown, in the existing endoscope with adjustable hardness of the insertion assembly, the proximal end of the spring tube 110 is fixed. During the bending process of the insertion tube 210, the inner side of the insertion tube 210 is compressed and the outer side is stretched, which also causes different deformation amounts of the spring tube 110 near the inner side and the spring tube 110 near the outer side inside the insertion tube 210. When adjusting the hardness of the insertion assembly when the insertion tube 210 is in a bent state, the compression amount of the spring tube 110 near the inner side of the insertion tube 210 is always greater than the compression amount of the spring tube 110 near the outer side of the insertion tube 210, which in turn causes uneven force on the insertion tube 210 and affects the stability of the insertion tube 210 in the bent state.

[0037] The following will Figures 1 to 14 be described in detail with reference to the accompanying drawings, through specific embodiments and their application scenarios, for an adjustment unit 100, an operating mechanism 130, an insertion assembly 200, and an endoscope 300 provided by this application.

[0038] Some embodiments of this application provide an adjustment unit 100, including an operating mechanism 130, a limiting member 120, and a spring tube 110.

[0039] As Figure 2 and Figure 3 shown, there are at least two spring tubes 110, which are arranged on the insertion tube 210, and the distal end of the spring tube 110 is fixedly connected to the insertion tube 210. By compressing the spring and changing the stiffness of the spring, the force required for the insertion tube 210 to bend is increased, thereby increasing the stability of the insertion tube 210.

[0040] In this embodiment, the insertion tube 210 is preferably bidirectionally bent. Therefore, the plurality of bellows 110 are divided into two groups and are disposed on opposite sides inside the insertion tube 210 along the radial direction of the insertion tube 210.

[0041] Preferably in this embodiment, the number of the bellows 110 is preferably two. It goes without saying that the number of the springs can also be four, six, eight or more, and this embodiment does not limit this.

[0042] As Figure 13 and Figure 14 shown, the proximal end of the bellows 110 is configured to have a first state and a second state. When in the second state, the proximal end of the bellows 110 is movably engaged with the insertion tube 210. The proximal end of the bellows 110 can bend with the insertion tube 210 and move along the insertion tube 210, so that the bellows 110 can adapt to the bending of the insertion tube 210 and automatically adjust. During the bending process of the insertion tube 210, the compression state of the bellows 110 is not affected as much as possible, and further, the difference in the deformation amounts of the bellows 110 near the inner side and the bellows 110 near the outer side in the insertion tube 210 is minimized as much as possible, so that the force on the insertion tube 210 is as balanced as possible during the bending process.

[0043] As Figure 7 shown, when the proximal end of the bellows 110 is in the first state, the bellows 110 is connected to the operating mechanism 130, and the bellows 110 can move under the drive of the operating mechanism 130 and change the stiffness of the bellows 110. When the proximal end of the bellows 110 is in the first state, the proximal ends of the bellows 110 near the inner side and the proximal ends of the bellows 110 near the outer side in the insertion tube 210 can be pushed by the operating mechanism 130, and the bellows 110 on both sides in the insertion tube 210 are compressed at the same speed as much as possible, ensuring that when the stiffness of the insertion tube 210 is adjusted, the forces on the opposite sides in the radial direction of the insertion tube 210 are as balanced as possible.

[0044] As Figure 7 shown, the proximal end of the bellows 110 can be switched between the first state and the second state. In the initial state, the proximal end of the bellows 110 is in the second state and moves inside the insertion tube 210 as the insertion tube 210 bends; when the stiffness of the insertion tube 210 needs to be adjusted, the proximal end of the bellows 110 is switched from the second state to the first state so that the bellows 110 can be compressed by the operating mechanism 130.

[0045] As Figure 2 and ​ shown, the adjusting unit 100 further includes a guide member 220. The guide member 220 movably passes through the bellows 110, and the distal end of the guide member 220 is connected to the insertion tube 210. The guide member 220 plays a guiding role in the movement of the proximal end of the bellows 110 and ensures the smooth movement of the proximal end of the bellows 110.

[0046] As ​ shown, when the bourdon tube 110 is in the first state, the proximal end of the bourdon tube 110 can move along the guide member 220 driven by the operating mechanism 130. When the bourdon tube 110 is in the first state, the proximal end of the bourdon tube 110 can be pushed by the operating mechanism 130 and move relatively along the guide member 220 to adjust the compression amount of the bourdon tube 110, thereby changing the stiffness of the bourdon tube 110.

[0047] Among them, when the adjusting unit 100 is used for the endoscope 300, the guide member 220 is preferably a traction rope. Due to the bending of the insertion tube 210, the traction rope is an essential structure. By sleeving the bourdon tube 110 on the traction rope, the proximal end of the bourdon tube 110 is driven by the traction rope to move in the insertion tube 210 following the bending of the insertion tube 210 in the second state, which is beneficial to simplifying the structure of the endoscope 300.

[0048] The insertion tube 210 includes a traction mechanism for bending the insertion tube 210. The insertion tube 210 is driven to bend by the traction mechanism so that the insertion tube 210 can observe and detect lesions.

[0049] The guide member 220 is connected to the traction mechanism, and at least part of the guide member 220 can be driven to move relative to the insertion tube 210 during the process of the traction mechanism driving the insertion tube 210 to bend. By connecting the guide member 220 with the traction mechanism, at least part of the guide member 220 can be driven to move relative to the insertion tube 210 during the process of the traction mechanism driving the insertion tube 210 to bend. When the bourdon tube 110 is in the second state, the proximal end of the bourdon tube 110 can bend with the insertion tube 210 and move along the insertion tube 210.

[0050] The traction mechanism can drive the insertion tube 210 to bend through the guide member 220. When the adjusting unit 100 is applied to the endoscope 300, the traction mechanism can drive the insertion tube 210 to bend through the guide member 220, and the guide member 220 functions as a traction rope, which is beneficial to simplifying the structure of the endoscope 300.

[0051] It should be noted that when the adjusting unit 100 is applied to the endoscope 300, the traction mechanism is a turntable provided in the endoscope handle 310.

[0052] As ​ , ​ and ​As shown, the position-limiting member 120 includes a movable tube 121 and a fixed tube 122. The movable tube 121 is connected to the proximal end of the spring tube 110. The fixed tube 122 is disposed on the guiding member 220, and the fixed tube 122 is detachably connected to the movable tube 121. When the proximal end of the spring tube 110 is in the second state, the movable tube 121 is connected to the fixed tube 122 to fix the proximal end of the spring tube 110 to the guiding member 220, so that the proximal end of the spring tube 110 moves within the insertion tube 210 as the insertion tube 210 bends. When the proximal end of the spring tube 110 is in the first state, the movable tube 121 is separated from the fixed tube 122. At this time, the movable tube 121 can move relative to the guiding member 220. By moving the movable tube 121, the proximal end of the spring tube 110 is driven to move along the axial direction of the insertion tube 210 to change the compression amount of the spring tube 110, thereby changing the stiffness of the spring tube 110.

[0053] Wherein, the stiffness of the spring tube 110 near the proximal end is greater than the stiffness of the spring tube 110 near the distal end. When adjusting the compression amount of the spring tube 110, since the stiffness of the spring tube 110 near the proximal end is greater than the stiffness of the spring tube 110 near the distal end, when adjusting the compression amount of the spring tube 110, the high-stiffness proximal end bears the initial pressure preferentially and precisely transmits the driving force to the distal end of the spring tube 110, optimizing the load transmission path and making the spring tube 110 more stable during the stiffness adjustment process.

[0054] In some embodiments, the pitch of the spring tube 110 on the proximal end side is greater than the pitch of the spring tube 110 on the distal end side, thereby making the stiffness of the spring tube 110 near the proximal end greater than the stiffness of the spring tube 110 near the distal end.

[0055] In some embodiments, the proximal end side of the spring tube 110 is a sleeve tube and the distal end side is a spring, thereby making the stiffness of the spring tube 110 near the proximal end greater than the stiffness of the spring tube 110 near the distal end.

[0056] As ​ shown, the movable tube 121 is snap-connected to the fixed tube 122 and can be separated under force. When the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121, the unlocking member 131 will exert pressure on the fixed tube 122 and / or the movable tube 121 and transmit the pressure to the movable tube 121 and / or the fixed tube 122, so that the movable tube 121 and / or the fixed tube 122 are deformed under force, and thus the movable tube 121 is separated from the fixed tube 122.

[0057] Specifically, the movable tube 121 and the fixed tube 122 are provided with a buckle 124 and a fastening portion. Through the cooperation between the buckle 124 and the fastening portion, the movable tube 121 and the fixed tube 122 are connected. In some embodiments, the buckle 124 is provided on the movable tube 121, and the fastening portion is provided on the fixed tube 122. In some embodiments, the buckle 124 is provided on the fixed tube 122, and the fastening portion is provided on the movable tube 121.

[0058] As ​ , ​ and ​ shown, the operating mechanism 130 includes an unlocking member 131 and a driving member. The unlocking member 131 is provided corresponding to the limiting member 120, and the unlocking member 131 switches between a first position and a second position; when the unlocking member 131 is in the first position, the driving member is connected to the unlocking member 131 and is used to drive the unlocking member 131 to contact the fixed tube 122 and / or the movable tube 121, so that the fixed tube 122 and the movable tube 121 are separated. When it is necessary to adjust the compression amount of the spring tube 110, the doctor operates the driving member, so that the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121; when the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121, it will cause a certain extrusion on the fixed tube 122 and / or the movable tube 121, driving the fixed tube 122 and the movable tube 121 to separate, and further causing the proximal end of the spring tube 110 to switch to the first state.

[0059] Correspondingly, when the unlocking member 131 is in the second position, when the unlocking member 131 is separated from the fixed tube 122 and / or the movable tube 121, the limiting member 120 can move axially relative to the unlocking member 131.

[0060] As ​ , ​ and ​ shown, when the unlocking member 131 is in the first position, the unlocking member 131 can move along the guiding member 220. The unlocking member 131 is connected to the movable tube 121 and can drive the movable tube 121 to move along the guiding member 220. When the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121, the unlocking member 131 and the movable tube 121 are axially limited and matched in the axial direction of the unlocking member 131, so that the movable tube 121 cannot move relative to the unlocking member 131 in the axial direction of the unlocking member 131. Furthermore, by moving the unlocking member 131, the movable tube 121 can be driven to move to change the compression amount of the spring tube 110. After the unlocking member 131 and the movable tube 121 are axially limited and matched in the axial direction of the unlocking member 131, the doctor continues to operate the driving member, so that the unlocking member 131 can move along the axial direction of the insertion tube 210, and further drive the movable tube 121 to compress the spring tube 110 to change the compression amount of the spring tube 110.

[0061] The cooperation between the driving member and the unlocking member 131 can not only enable the unlocking member 131 to control the separation of the movable tube 121 and the fixed tube 122, but also enable the unlocking member 131 to drive the movable tube 121 to move and compress the spring tube 110, thereby saving operating components and reducing the components and occupied space of the operating mechanism 130. When the adjusting unit 100 is applied to the endoscope 300, the operating mechanism 130 of this embodiment is more convenient for assembling with the endoscope handle 310.

[0062] Moreover, the unlocking member 131 drives a plurality of movable tubes 121 to move simultaneously to ensure that a plurality of spring tubes 110 are compressed at the same speed, so as to ensure that during the process of adjusting the stiffness of the insertion tube 210, the forces on the two opposite radial sides of the insertion tube 210 are as balanced as possible.

[0063] As ​ and ​ shown, the operating mechanism 130 further includes a support member 132, and the support member 132 is arranged corresponding to the limiting member 120; the support member 132 is used to support the limiting member 120 during the limiting cooperation process between the unlocking member 131 and the movable tube 121. During the process of the unlocking member 131 contacting the fixed tube 122 and / or the movable tube 121, the unlocking member 131 will cause a certain extrusion on the fixed tube 122 and / or the movable tube 121, so that the fixed tube 122 and / or the movable tube 121 has a movement tendency away from the unlocking member 131, making it difficult for the unlocking member 131 to be in limiting cooperation with the movable tube 121. Therefore, by providing the support member 132, the limiting member 120 is supported during the limiting cooperation process between the unlocking member 131 and the movable tube 121 to ensure that the unlocking member 131 can achieve limiting cooperation with the movable tube 121.

[0064] As ​ and ​ shown, the unlocking member 131 is in limiting connection with the support member 132 in the axial direction of the support member 132, so that the support member 132 moves along with the unlocking member 131. By the unlocking member 131 being in limiting connection with the support member 132 in the axial direction of the support member 132, the unlocking member 131 and the support member 132 form an integral body, so that no matter where the unlocking member 131 is located, the support member 132 can correspond to the unlocking member 131 to support the limiting member 120 and ensure that the unlocking member 131 can be in limiting cooperation with the movable member.

[0065] And / or, as ​ and ​As shown, the support member 132 and the limiting member 120 are connected by an elastic member 134 in the radial direction of the support member 132. During the process of the driving member driving the limiting member 120 to approach the movable tube 121, the elastic member 134 is compressed and stores elastic potential energy. When the driving member is separated from the limiting member 120, the elastic member 134 rebounds and releases the elastic potential energy, driving the limiting member 120 to move away from the movable tube 121 so that the limiting member 120 is separated from the movable tube 121. Moreover, the support member 132 and the limiting member 120 are connected by the elastic member 134 in the radial direction of the support member 132, and also limit the connection between the unlocking member 131 and the support member 132 in the axial direction of the support member 132, so that the support member 132 moves following the unlocking member 131.

[0066] In this embodiment, the elastic member 134 is preferably a spring piece. It goes without saying that the elastic member 134 can also be a helical spring or others, and can be flexibly set according to the use requirements. This embodiment does not make any limitation in this regard.

[0067] Preferably in this embodiment, the number of the elastic members 134 is preferably two. It goes without saying that the number of the elastic members 134 is not limited to two, and can also be three, four, five or more, and can be flexibly set according to the use requirements. This embodiment does not make any limitation in this regard.

[0068] As ​ 、 ​ and ​ shown, the unlocking member 131 has a first limiting portion 136, and the movable tube 121 has a second limiting portion 123; when the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121, the first limiting portion 136 and the second limiting portion 123 are in limiting cooperation in the axial direction of the unlocking member 131. When the unlocking member 131 contacts the fixed tube 122 and / or the movable tube 121, through the clamping of the first limiting member and the second limiting member, the axial limiting cooperation between the first limiting portion 136 and the second limiting portion 123 is realized.

[0069] Preferably in this embodiment, in order to increase the friction between the first limiting portion 136 and the second limiting portion 123, a plurality of stripe structures are respectively provided on the first limiting portion 136 and the second limiting portion 123. When the first limiting portion 136 and the second limiting portion 123 are in limiting cooperation, the stripe structures on the first limiting portion 136 and the second limiting portion 123 greatly increase the friction between the first limiting portion 136 and the second limiting portion 123, and further better enable the axial limiting cooperation between the first limiting portion 136 and the second limiting portion 123 in the unlocking member 131.

[0070] As ​ 、 ​ and ​As shown, the driving member includes a knob 133 and a connecting member 135; the knob 133 can rotate circumferentially along the unlocking member 131; one of the inner wall of the knob 133 and the outer wall of the unlocking member 131 is provided with a spiral groove 138, and the other is provided with a connecting member 135. One end of the connecting member 135 is embedded in the spiral groove 138 and can move along the spiral groove 138. After the unlocking member 131 is limit-connected to the support member 132 in the axial direction of the support member 132, the doctor rotates the knob 133. Under the cooperation of the connecting member 135 and the spiral groove 138, the limiting member 120 drives the movable tube 121 to move along the axial direction of the insertion tube 210 to change the compression amount of the bellows tube 110.

[0071] In some embodiments, the spiral groove 138 is provided on the inner wall of the knob 133, and the connecting member 135 is provided on the outer wall of the unlocking member 131.

[0072] In some embodiments, the spiral groove 138 is provided on the outer wall of the knob 133, and the connecting member 135 is provided on the inner wall of the unlocking member 131.

[0073] As ​ shown, the spiral groove 138 has a spiral portion 1382 and a horizontal portion 1381; the horizontal portion 1381 is provided at the proximal end of the spiral portion 1382, and the groove depth on one side of the proximal end of the horizontal portion 1381 gradually decreases from the proximal end to the distal end. Since the groove depth on one side of the proximal end of the horizontal portion 1381 gradually decreases from the proximal end to the distal end, when the knob 133 is rotated, the change in the groove depth exerts extrusion on the connecting member 135, so that the connecting member 135 drives the limiting member 120 to move closer to the fixed tube 122 and / or the movable tube 121, and then contacts the fixed tube 122 and / or the movable tube 121. As the knob 133 continues to rotate, the connecting member 135 moves from the horizontal portion 1381 to the spiral portion 1382, and then drives the limiting member 120 to drive the movable tube 121 to move along the axial direction of the insertion tube 210 to change the compression amount of the bellows tube 110.

[0074] In this embodiment, through the cooperation of the knob 133 and the connecting member 135, by rotating the knob 133, the limiting member 120 is both driven to be in limit cooperation with the movable tube 121 and driven to drive the movable tube 121 to move. The two motion states of the limiting member 120 are realized through one operation (rotating the knob 133), saving the doctor's operation steps and being more convenient for the doctor to use.

[0075] When the operating mechanism 130 is installed on the endoscope 300, as ​ 、 ​ 、 ​ and ​As shown, the operating mechanism 130 is installed on the cylindrical section 311 of the endoscope handle 310. In order to limit the position of the limiting member 120 in the radial direction of the cylindrical section 311 and enable it to move axially along the cylindrical section 311, an arc-shaped portion extends from the top of the support member 132, so that the outer wall of the support member 132 contacts the outer wall of the cylindrical section 311, thereby achieving the radial limit between the limiting member 120 and the cylindrical section 311 and the purpose of being able to move axially along the cylindrical section 311. A space is formed between the arc-shaped portion and the support member 132 for the limiting member 120 to freely move in the radial direction of the support member 132, so that the limiting member 120 can contact the fixed tube 122 and / or the movable tube 121.

[0076] Therefore, the present application preferably adopts the solution in which the spiral groove 138 is arranged on the inner wall of the knob 133 and the connecting member 135 is arranged on the outer wall of the unlocking member 131. Although the technical means of arranging the spiral groove 138 on the outer wall of the knob 133 and the connecting member 135 on the inner wall of the unlocking member 131 can also achieve the purpose of driving the limiting member 120 to move by rotating the knob 133, considering the existence of the arc-shaped portion, it is necessary to arrange the spiral groove 138 on both the arc-shaped portion and the limiting member 120 to achieve the purpose of rotating the knob 133 to both drive the limiting member 120 to be in limiting cooperation with the movable tube 121 and drive the limiting member 120 to drive the movable tube 121 to move. However, the preferred solution adopted in the present application only needs to arrange a spiral groove 138 on the inner wall of the spiral groove 138, which is more convenient for processing.

[0077] In addition, the connecting member 135 arranged on the outer wall of the unlocking member 131 also passes through the arc-shaped portion and cooperates with the spiral groove 138, thereby axially limiting the connection between the unlocking member 131 and the support member 132 on the support member 132, so that the support member 132 follows the unlocking member 131 to move, and there is no need to set other limiting structures, saving components.

[0078] It should be noted that a through groove 312 extending along its own axial direction is provided on the circumferential wall of the cylindrical section 311, as ​ shown. One end of the connecting member 135 passes through the through groove 312 and cooperates with the spiral groove 138 to avoid the movement interference between the connecting member 135 and the cylindrical section 311.

[0079] It should also be noted that since the endoscope 300 has an instrument tube 320, as ​ shown, the proximal end of the instrument tube 320 passes through the cylindrical section 311 and extends to the distal end of the insertion assembly 200. Therefore, the limiting member 120 and / or the support member 132 are provided with a through hole 137 penetrating along their own axial directions, as ​ shown, to adapt to the assembly of the instrument tube 320.

[0080] Some embodiments of the present application also provide an endoscope 300, including an adjustment unit 100.

[0081] As ​ , ​ , ​ and ​ shown, the endoscope 300 further includes an endoscope handle 310 and an insertion assembly 200. The proximal end of the insertion tube 210 of the insertion assembly 200 is connected to the endoscope handle 310. The operating mechanism 130 is disposed on the cylindrical section 311 of the endoscope handle 310 and is used to control the proximal end of the spring tube 110 to switch between a first state and a second state.

[0082] Among them, the insertion tube 210 is a part of the insertion assembly 200, and a camera module is integrated at the distal end of the insertion tube 210 to observe the situation inside the human body cavity.

[0083] The endoscope 300 in the embodiments of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not make specific limitations on the types of the endoscope 300.

[0084] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0085] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0086] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An adjustment unit, characterized in that, It includes an operating mechanism, a guide member, and at least two sets of spring tubes. The spring tubes are arranged on an insertion tube, and the insertion tube includes a traction mechanism. The distal end of the spring tube is connected to the insertion tube. The traction mechanism is used to drive the insertion tube to bend. The traction mechanism is connected to the guide member. The at least two sets of spring tubes are distributed on two radially opposite sides of the insertion tube. The proximal end of the spring tube is configured to have a first state and a second state and can be switched between the first state and the second state. When the spring tube is in the second state, the proximal end of the spring tube is movably engaged with the insertion tube. The proximal end of the spring tube is connected to the guide member. During the process that the traction mechanism drives the insertion tube to bend, the proximal end of the spring tube can be driven by the guide member to bend along with the insertion tube and move along the insertion tube. When the spring tube is in the first state, the proximal end of the spring tube can move along the guide member driven by the operating mechanism. The spring tube is connected to the operating mechanism, and the spring tube can be driven by the operating mechanism to move and change the stiffness of the spring tube. The guide member movably penetrates through the spring tube, and the distal end of the guide member is connected to the insertion tube.

2. The adjustment unit according to claim 1, wherein, The guide member is connected to the traction mechanism, and during the process that the traction mechanism drives the insertion tube to bend, it can drive the guide member to move relative to at least a part of the insertion tube; and / or, the traction mechanism can drive the insertion tube to bend through the guide member.

3. The adjustment unit according to claim 2, wherein, The adjusting unit further includes a limiting member, and the limiting member includes a movable tube and a fixed tube. The movable tube is connected to the proximal end of the spring tube. The fixed tube is arranged on the guide member, and the fixed tube can be detachably connected to the movable tube. When the spring tube is in the second state, the fixed tube is connected to the movable tube, and the guide member can drive the proximal end of the spring tube to move along the guide member through the limiting member. When the spring tube is in the first state, the fixed tube is separated from the movable tube.

4. The adjustment unit according to claim 3, characterized in that, The stiffness of the spring tube near the proximal end is greater than that of the spring tube near the distal end. and / or, the movable tube is snap-connected to the fixed tube and can be separated under force.

5. An adjustment unit according to claim 3 or 4, characterized in that The operating mechanism includes an unlocking member. The unlocking member is correspondingly arranged with the limiting member, and the unlocking member switches between a first position and a second position. When the unlocking member is in the first position, at least one of the fixed tube and the movable tube cooperates with the unlocking member, and the unlocking member drives the fixed tube and the movable tube to separate. When the unlocking member is in the second position, both the fixed tube and the movable tube are separated from the unlocking member.

6. The adjustment unit according to claim 5, characterized in that, When the unlocking member is in the first position, the unlocking member can move along the guide member, and the unlocking member is connected to the movable tube and can drive the movable tube to move along the guide member.

7. The adjusting unit according to claim 6, wherein The operating mechanism further includes a support member, which is provided corresponding to the limiting member; the support member is used to support the limiting member during the process of the unlocking member being in limit fit with the movable tube, and / or the support member moves along the axial direction of the unlocking member following the unlocking member, and / or the support member and the limiting member are connected by an elastic member in the radial direction of the support member; and / or, the unlocking member has a first limiting portion, and the movable tube has a second limiting portion; when the unlocking member contacts the fixed tube and / or the movable tube, the first limiting portion and the second limiting portion are in axial limit fit on the unlocking member.

8. The adjustment unit according to claim 7, wherein, The operating mechanism further includes a driving member, and the driving member includes a knob and a connecting member; the knob can rotate circumferentially along the unlocking member; One of the inner wall of the knob and the outer wall of the unlocking member is provided with a spiral groove, and the other is provided with a connecting member. One end of the connecting member is embedded in the spiral groove and can move along the spiral groove; The spiral groove has a spiral portion and a horizontal portion; the horizontal portion is arranged at the proximal end of the spiral portion, and the groove depth of the horizontal portion gradually decreases from far away from the spiral portion to close to the spiral portion.

9. An endoscope, characterized in that, Comprising the adjusting unit according to any one of claims 1 to 8.

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