WO2023174093A1 - Handle bending control and locking mechanism, endoscope handle and endoscope system - Google Patents

Abstract

A handle bending control and locking mechanism, an endoscope handle, and an endoscope system. The handle bending control and locking mechanism comprises a fixed shaft (40), a knob assembly (30), a limiting assembly, and an elastic member; the fixed shaft (40) is configured to be mounted on a handle body (10); the knob assembly (30) is movably sleeved on the fixed shaft (40) and is connected to a bending control assembly, such that when the knob assembly (30) rotates, the bending control assembly is driven to move, and the distal end of an insertion tube (20) bends by means of the movement of the bending control assembly; the elastic member is arranged in contact with the knob assembly (30); the limiting assembly is sleeved on the fixed shaft (40), and at least part of the limiting assembly can move along the axial direction of the fixed shaft (40) to press on the knob assembly (30) and the elastic member, causing the elastic member to lock the rotation of the knob assembly (30).

Description

Handle bending locking mechanism, endoscope handle and endoscope system

Related applications

This application requires a Chinese patent application with application number 2022205844054 and titled "Handle Bending Locking Mechanism, Endoscope Handle and Endoscope System" submitted to the China Patent Office on March 17, 2022, and in March 2022 The Chinese patent application with the application number 2022102657830 and titled "Handle Bending Locking Mechanism, Endoscope Handle and Endoscope System" submitted to the China Patent Office on March 17th has the right of priority. The entire contents of the aforementioned two patents are incorporated by reference. incorporated in this application.

Technical field

The present application relates to the technical field of medical devices, and in particular to a handle bending control locking mechanism, an endoscope handle and an endoscope system.

Background technique

Medical endoscopes are mainly used in surgeries and routine medical examinations. In clinical use, doctors use natural holes in the human body or make tiny wounds on the body to extend the lens of the endoscope into the body, and then use other surgical instruments to And the camera display system can perform closed surgical operations in the body outside the body. Compared with traditional surgical procedures, minimally invasive surgeries using medical endoscopes have smaller incisions and allow patients to recover quickly after surgery. Therefore, medical endoscopes have been widely used.

Contents of the invention

On the one hand, this application provides a handle bending control locking mechanism, including:

a fixed shaft, which is used to be installed on the handle body;

Knob assembly, the knob assembly is movably sleeved on the fixed shaft and connected to the bending control assembly, so that when the knob assembly rotates, it drives the movement of the bending control assembly, and then the movement of the bending control assembly makes the insertion The distal end of the tube develops a bend;

An elastic member, the elastic member is arranged in contact with the knob assembly; and,

Limiting component, the limiting component is sleeved on the fixed shaft, and at least part of the limiting component can move along the axial direction of the fixed shaft to squeeze the knob component and the elastic member, so that the The elastic member locks the rotation of the knob assembly.

The technical solution of this application is further described below:

In one embodiment, the limiting component includes:

The first limiting member; the first limiting member is sleeved on the fixed shaft and can move along the axial direction of the fixed shaft; and,

The second limiting member is rotatably sleeved on the fixed shaft. The second limiting member is in contact with the first limiting member. When the second limiting member When rotating around the fixed shaft, the second limiting member drives the first limiting member to move along the axial direction of the fixed shaft.

In one embodiment, a first slope is provided on a side of the second limiting member close to the first limiting member, and a first slope is provided on a side of the first limiting member close to the second limiting member. There is a second inclined surface, the first inclined surface is in sliding fit with the second inclined surface, the second limiting member has an unlocking position and a locking position, and the second limiting member can be between the unlocking position and the locking position. rotate to drive the first limiting member to move along the axial direction of the fixed shaft. When the second limiting member is in the unlocking position, the first limiting member releases the first elastic member ; When the second limiting member is in the locking position, the first limiting member presses the first elastic member.

In one embodiment, the first inclined surface is provided with a first protrusion, the second inclined surface is provided with a first groove, and when the second limiting member is in the locking position, the first protrusion Embedding into the first groove.

In one embodiment, the first inclined surface is provided with a first groove, the second inclined surface is provided with a first protrusion, and when the second limiting member is in the locking position, the first protrusion Embedding into the first groove.

In one embodiment, the wheel disk assembly includes at least one wheel disk, and all the wheel disks are sleeved on the fixed shaft in turn, and each wheel disk is connected to at least one of the pull wires; The knob assembly includes at least one knob, and all the knobs are sleeved on the fixed shaft in sequence along the axial direction of the fixed shaft, and the knobs are connected to the wheel plate in a one-to-one correspondence.

In one embodiment, the bending control component includes:

A roulette assembly, the roulette assembly is rotatably sleeved on the fixed shaft and connected to the knob assembly, and the roulette assembly can rotate around the fixed shaft driven by the knob assembly; and,

A pull wire, one end of which is connected to the roulette assembly, and the other end of which is used to connect to the distal end of the insertion tube, so that when the roulette assembly rotates around the fixed axis, the The pull wire pulls the distal end of the insertion tube to create a bend.

In one embodiment, the wheel disk assembly includes a first wheel disk and a second wheel disk, and the first wheel disk and the second wheel disk are sleeved on the fixed shaft in sequence along the axial direction of the fixed shaft. On the fixed shaft, the first wheel disk and the second wheel disk are each connected with at least one of the pull wires; the knob assembly includes a first knob and a second knob, the first knob and the second The knobs are sleeved on the fixed shaft in sequence along the axial direction of the fixed shaft, and the first knob is connected to the first wheel disk, and the second knob is connected to the second wheel disk.

In one embodiment, the elastic member includes:

A first elastic member, the first elastic member is provided between the limiting component and the first knob; and,

A second elastic member is provided between the second knob and the handle body.

In one embodiment, the handle bending control locking mechanism further includes a partition, the partition is disposed between the first knob and the second knob, and the partition is provided with a first through hole. , the second knob is provided with an escape groove, the handle body is connected to a column, and one end of the column passes through the relief groove and is inserted into the first through hole.

In one embodiment, the first wheel disk includes a first sleeve and a disk body connected to one end of the first shaft sleeve, and the second wheel disk includes a second shaft sleeve and a disk body connected to one end of the first shaft sleeve. The disk body at one end of the shaft sleeve, the first shaft sleeve of the first wheel disk is sleeved on the outside of the fixed shaft and connected to the first knob, and the second shaft sleeve of the second wheel disk is sleeved on the outside of the fixed shaft and connected to the first knob. It is outside the first sleeve of the first wheel and connected with the second knob.

In one embodiment, each of the disk bodies is connected to at least one pull wire, and one end of each pull wire away from the distal end of the insertion tube is positionally adjustable on the disk body.

In one embodiment, the wheel disk assembly further includes a first threaded member, and the disk body is provided with a first threaded hole extending along the length direction of the pull wire and penetrating the disk body, and the first thread The component is threadedly engaged with the first threaded hole, and one end of the pull wire away from the distal end of the insertion tube is passed through the first threaded hole and connected with the first threaded component.

In one embodiment, the first threaded member is provided with a first threading hole and a second threading hole that are connected along the axial direction, and the aperture of the first threading hole is larger than the aperture of the second threading hole, so The pull wire is passed through the second threading hole, and an end of the pull wire away from the distal end of the insertion tube is provided with a first limiting part, and the first limiting part is located in the first threading hole, so The diameter of the first limiting part is larger than the diameter of the second threading hole.

In one embodiment, the wheel disc assembly further includes a second threaded member, the disc body is provided with a second threaded hole at an angle with the length direction of the pull wire, the second threaded member is connected to the The second threaded hole is threaded, and the end of the pull wire away from the distal end of the insertion tube is connected to the second threaded member. The second threaded member is used to retract the pull wire so that the pull wire moves away from the insertion tube. Tighten the insertion tube distally.

In one embodiment, the second threaded member is provided with a third threading hole and a fourth threading hole that are connected in the radial direction and penetrate the second threaded member, and the aperture of the third threading hole is larger than that of the fourth threading hole. The aperture of the threading hole, the pulling wire is threaded in the fourth threading hole, the end of the pulling wire away from the distal end of the insertion tube is provided with a second limiting part, the second limiting part is located on the third Among the three threading holes, the diameter of the second limiting portion is larger than the diameter of the fourth threading hole.

In one embodiment, the wheel disk assembly further includes a third threaded member, the disk body is provided with a third threaded hole and a fifth threading hole, the fifth threading hole extends along the length direction of the pull wire and Penetrating the plate body, the pull wire is passed through the fifth threading hole, the third threaded hole is connected to the fifth threading hole and is arranged at an included angle, and the third threaded member is connected to the fifth threading hole. The third threaded hole is threaded, and the third threaded member is used to press the pull wire in a crimping position in the fifth threading hole or to loosen the pull wire in a release position.

In one embodiment, the handle bending control locking mechanism further includes a fixed cap and a fifth threaded member. The fixed cap is provided with a second through hole, and the fixed cap is sleeved on an end of the fixed shaft away from the handle body. , a fifth threaded hole is opened at one end of the fixed shaft away from the handle body, the second through hole is connected to the five threaded hole, and the fifth threaded member is passed through the second through hole and connected with the fifth threaded hole. The fifth threaded hole is threaded.

In one embodiment, the handle bending control locking mechanism further includes a ferrule and a strap. The ferrule and the strap are spaced apart from each other on the same side of the handle body. The ferrule is provided with a useful The strap is used to bind the other endoscope to the fixing groove for fixing the other endoscope.

On the other hand, the present application also provides an endoscope handle, which includes the above-mentioned handle bending control locking mechanism and a handle body.

In one embodiment, the handle body includes a first shell and a second shell that interlock, and the first shell and the second shell enclose to form an installation cavity, and the bending control component Located in the installation cavity; the knob assembly, the elastic member and the limiting The components are located outside the mounting cavity.

In one embodiment, the first housing includes a first connecting part, the second housing includes a second connecting part, and the first connecting part and the second connecting part are connected through a fourth thread; The first connection part is provided with a second protrusion, the second connection part is provided with a second groove, and the second protrusion is inserted into the second groove.

In one embodiment, the first housing includes a first connecting part, the second housing includes a second connecting part, and the first connecting part and the second connecting part are connected through a fourth thread; The first connecting part is provided with a second groove, the second connecting part is provided with a second protrusion, and the second protrusion is inserted into the second groove.

Another aspect of the present application also provides an endoscope system, including the above-mentioned endoscope handle and an insertion tube, the proximal end of the insertion tube is connected to the endoscope handle.

In one embodiment, the insertion tube includes an insertion tube body, a head end piece, an inner sleeve, and an outer sleeve. The inner sleeve is sleeved on the distal end of the insertion tube body, and one end of the outer sleeve The proximal end of the head end piece is sleeved, and the other end of the outer sleeve is sleeved on the inner sleeve. The head end piece is provided with a first instrument channel, and the insertion tube body is provided with the inner sleeve. A second instrument channel is connected to the first instrument channel. The central axis of the first instrument channel and the central axis of the second instrument channel are not axially arranged. There is a gap between the second instrument channel and the first instrument channel. transition interval.

In one embodiment, the proximal end of the head end piece is provided with a protruding portion protruding in a direction close to the insertion tube body, and the protruding portion is used to conduct the instrument inserted into the first instrument channel. Guidance and fixation.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the application will become apparent from the description, drawings and claims.

Description of the drawings

The drawings that form a part of this application are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an improper limitation of this application.

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an endoscope handle according to an embodiment;

Figure 2 is a cross-sectional view of the endoscope handle shown in Figure 1;

Figure 3 is a partial enlarged view of the endoscope handle shown in Figure 1;

Figure 4 is a diagram 1 of the internal structure of an endoscope handle according to an embodiment;

Figure 5 is a diagram 2 of the internal structure of an endoscope handle according to an embodiment;

Figure 6 is a partial exploded view of the handle bending control locking mechanism shown in Figure 1;

Figure 7 is a schematic structural diagram of the second limiting member and the first limiting member according to an embodiment;

Figure 8 is a schematic assembly diagram of the second limiting member and the first limiting member shown in Figure 7;

Figure 9 is a partial enlarged view of part A shown in Figure 2;

Figure 10 is a schematic diagram of the connection between the pull wire and the first wheel according to an embodiment;

Figure 11 is a top view of the stay wire and the first wheel shown in Figure 10;

Figure 12 is a schematic structural diagram of the first threaded member according to an embodiment;

Figure 13 is a schematic structural diagram of a stay wire according to an embodiment;

Figure 14 is a schematic diagram of the connection structure between the first threaded member shown in Figure 12 and the pull wire shown in Figure 13;

Figure 15 is a schematic diagram of the connection between the pull wire and the first wheel according to another embodiment;

Figure 16 is a top view of the stay wire and the first wheel shown in Figure 15;

Figure 17 is a schematic structural diagram of a second threaded member according to an embodiment;

Figure 18 is a schematic structural diagram of a stay wire according to another embodiment;

Figure 19 is a schematic diagram of the connection structure between the second threaded member shown in Figure 17 and the pull wire shown in Figure 18;

Figure 20 is a schematic diagram of the connection between the pull wire and the first wheel according to another embodiment;

Figure 21 is a cross-sectional view of the stay wire and the first wheel shown in Figure 15;

Figure 22 is a top view of the stay wire and the first wheel shown in Figure 15;

Figure 23 is a schematic structural diagram of a first roulette wheel according to an embodiment;

Figure 24 is a top view of the first roulette wheel shown in Figure 23;

Figure 25 is a schematic diagram of the connection between the pull wire and the first wheel according to yet another embodiment;

Figure 26 is a top view of the first wheel shown in Figure 25;

Figure 27 is a schematic structural diagram of an endoscope handle according to another embodiment;

Figure 28 is a schematic view of the endoscope handle shown in Figure 27 from another angle;

Figure 29 is a schematic structural diagram of an insertion tube according to an embodiment;

Figure 30 is a cross-sectional view of the insertion tube shown in Figure 29;

Figure 31 is a schematic structural view of the insertion tube shown in Figure 29 without the outer tube;

Figure 32 is a schematic structural diagram of a head end piece according to an embodiment.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation modes of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described here. Those skilled in the art can make similar improvements without violating the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

Medical endoscopes include an operating handle and an insertion tube. The insertion tube is used for insertion into the body. The distal end of the insertion tube has components such as LEDs and lenses. The image information in the patient's body is obtained through the lens at the distal end of the insertion tube and fed back to the host computer. Minimally invasive surgery or medical examinations can be performed right on the screen. In order to better control the lens at the distal end of the insertion tube to accurately find the lesion, it is necessary to control the bending and steering of the insertion tube through the operating handle, and after the insertion tube is bent, the bending angle of the insertion tube needs to be locked and fixed, that is, the endoscope is Bending locking. In traditional endoscopes, the bending angle of the insertion tube is locked after the bending control is locked. However, in clinical use, doctors often need to fine-tune the bending angle of the insertion tube after locking the endoscope. Adjust to achieve the doctor's desired curvature. Based on this, the present invention provides a handle bending control locking mechanism, an endoscope handle and an endoscope system. The handle bending control locking mechanism can still adjust the bending angle of the insertion tube after locking the bending angle of the insertion tube. Adjust, and the locking will not fail after adjustment.

In this application, "proximal end" refers to the end of the component close to the surgical operator; "distal end" refers to the end of the component away from the surgical operator.

Referring to FIGS. 1 to 5 , a handle bending control locking mechanism according to an embodiment includes a fixed shaft 40 , a knob assembly 30 , a limiting assembly, and an elastic member.

The fixed shaft 40 is used to be installed on the handle body 10 , where the handle body 10 includes a first shell 11 and a second shell 12 that interlock with each other. The first shell 11 and the second shell 12 enclose an installation cavity 13 . Further, the handle body is used to connect with the proximal end of the insertion tube 20. The insertion tube 20 is used to extend into the human body through a natural hole in the human body or a small wound on the body. The proximal end of the insertion tube 20 is connected to the handle body 10, and the insertion tube 20 is inserted into the human body. The far end of the tube 20 is provided with components such as LEDs and lenses to obtain image information inside the human body.

One end of the fixed shaft 40 is fixedly connected to the first housing 11 , and the other end of the fixed shaft 40 passes through the second housing 12 and extends out of the installation cavity 13 , so that the fixed shaft 40 forms the first section located in the installation cavity 13 and a second section located outside the installation cavity 13 .

The knob assembly 30 is movably sleeved on the second section of the fixed shaft 40 and connected to the bending control assembly, so that when the knob assembly 30 rotates, it drives the bending control assembly to move, and then the movement of the bending control assembly causes the insertion tube 20 The distal end is bent. In one embodiment, the bending control assembly includes a wheel assembly 50 and a pull wire 80 . The wheel assembly 50 is rotatably sleeved on the first section of the fixed shaft 40 and connected to the knob assembly 30 . One end of the pull wire 80 is connected to the roulette assembly 50 , and the other end of the pull wire 80 is connected to the distal end of the insertion tube 20 , so that the roulette assembly 50 is driven to rotate through the knob assembly 30 , and the roulette assembly 50 can move away from the distal end of the insertion tube 20 The pulling wire 80 is tightened in a direction such that the pulling wire 80 pulls the distal end of the insertion tube 20 to bend and turn.

The limiting component is sleeved on the fixed shaft 40 and is located on the side of the knob assembly 30 away from the handle body 10. At least part of the limiting component can move along the axial direction of the fixed shaft to cause at least part of the limiting component to be squeezed or loosened. Open knob assembly 30. In one embodiment, the limiting component includes a first limiting component 61 and a second limiting component 62 . The first limiting member 61 is sleeved on the fixed shaft 40 and can move along the axial direction of the fixed shaft 40; the second limiting member 62 is rotatably sleeved on the fixed shaft 40, and the second limiting member 62 is connected with the first limiting member 62. The positioning member 61 is in contact fit, and when the second limiting member 62 rotates around the fixed shaft, the second limiting member 62 drives the first limiting member 61 to move in the axial direction of the fixed shaft 40 . In one embodiment, the second limiting member 62 is also connected to a locking knob 33, and the locking knob 33 facilitates the rotation of the second limiting member 62. It is understandable that there are many ways to realize the axial movement of the limiting component along the fixed shaft 40 to compress the knob component, which is not limited to the above embodiment. For example, in another embodiment, the limiting component may also be a nut. The nut is threadedly connected to the fixed shaft, so that by rotating the nut, the nut can also move along the axial direction of the fixed shaft 40 to compress the knob assembly.

The elastic member is in contact with the knob assembly, so that when the limiting assembly moves along the axial direction of the fixed shaft 40 to squeeze the knob assembly 30 and the elastic member, the elastic member deforms and generates friction force on the knob assembly 30, and the friction force can Lock the knob assembly 30 to prevent the knob assembly from rotating. In one embodiment, the number of elastic members is two, namely the first elastic member 71 and the second elastic member 72 , wherein the first elastic member 71 is disposed when the first limiting member 61 is close to the first limiting member. 61 is disposed on a side away from the second limiting member 62 and is located between the first limiting member 61 and the knob assembly 30 to provide friction when the first limiting member 61 squeezes the knob assembly 30 . The second elastic member 72 is disposed between the knob assembly 30 and the handle body 10 , that is, one side of the second elastic member 72 contacts the handle body 10 , and the other side of the second elastic member 72 contacts the handle body 10 . The knob assembly 30 faces one side of the handle body 10 , thereby further increasing the friction between the knob assembly 30 and the handle 10 . The materials of the first elastic member 71 and the second elastic member 72 are both elastic materials, such as rubber rings or rubber pads. It is understandable that the number of elastic members is not limited to the two mentioned above. In other embodiments, the number of elastic members may be one or more according to requirements.

When the above-mentioned handle bending control locking mechanism needs to control the bending of the insertion tube 20, the knob assembly 30 can be driven to rotate the wheel assembly 50. When the wheel assembly 50 rotates, the pull wire can be tightened in a direction away from the far end of the insertion tube 20. 80, thereby causing the pull wire 80 to pull the distal end of the insertion tube 20 to bend and turn. After the insertion tube 20 is bent to a suitable angle, when the angle of the insertion tube 20 needs to be locked, the second limiting member 62 is rotated through the locking knob 33, and the second limiting member 62 can drive the first limiting member 61 along the fixed axis. 40 of axial movement, the first limiting member 61 can exert an axial squeezing force on the first elastic member 71 after axial movement, and the first elastic member 71 can exert an axial squeezing force on the knob assembly 30 after being squeezed. Press, so that the knob assembly 30 moves axially and squeezes the second elastic member 72 . The first elastic member 71 and the second elastic member 72 will both undergo elastic deformation after being squeezed, thereby increasing the damping of the knob assembly 30, thereby limiting the free rotation of the knob assembly 30 when there is no external force to rotate the knob assembly 30, thereby preventing the knob assembly 30 from being inserted into the The restoring force of the tube 20 causes the rotation of the wheel assembly 50 to achieve locking of the bending angle of the inserted tube 20 . Moreover, the friction force of the first elastic member 71 and the second elastic member 72 on the knob assembly 30 limits the rotation of the knob assembly 30 and does not lock the knob assembly 30. At this time, by applying a friction force greater than the friction force to the knob assembly 30, By applying force, the knob assembly 30 can be rotated again to fine-tune the bending angle of the insertion tube 20 until the insertion tube 20 is adjusted to the required bending state.

Further, the wheel assembly 50 includes at least one wheel, and all the wheels are sleeved on the fixed shaft 40 in sequence along the axial direction of the fixed shaft 40 , and each wheel is connected to at least one pull wire 80 ; the knob assembly 30 includes at least One knob, all the knobs are sleeved on the fixed shaft 40 in sequence along the axial direction of the fixed shaft 40, and the knobs are connected to the wheel plate in one-to-one correspondence, thereby realizing multi-directional bending of the insertion tube 20.

Referring to Figures 3 and 6, in this embodiment, the wheel assembly 50 includes a first wheel 51 and a second wheel 52. The first wheel 51 and the second wheel 52 are sequentially nested along the axial direction of the fixed shaft 40. Provided on the fixed shaft 40 , the first wheel disk 51 and the second wheel disk 52 are respectively connected with at least one pulling wire 80 . Correspondingly, the knob assembly 30 includes a first knob 31 and a second knob 32. The first knob 31 and the second knob 32 are sequentially sleeved on the fixed shaft 40 along the axial direction of the fixed shaft 40. The first knob 31 and the first wheel The second knob 32 is connected to the second wheel 52, and the first wheel 51 is connected with two pull wires 80, so that by rotating the first knob 31 in different directions, the first wheel 51 can be driven in the corresponding direction. Rotate to control the insertion tube 20 to bend in two different directions, such as the left and right directions. Similarly, the second wheel 52 is connected with two pull wires 80, so that by rotating the second knob 32 in different directions, the second wheel 52 can be driven to rotate in different directions, thereby controlling the insertion tube 20 to two different directions. The direction is curved, such as up and down.

Further, the first elastic member 71 is provided between the first limiting member 61 and the first knob 31 , and the second elastic member 72 is provided between the second knob 32 and the handle body 10 . Therefore, by rotating the second limiter 62 by the locking knob 33, the second limiter 62 can drive the first limiter 61 to move in the axial direction of the fixed shaft 40. After the first limiter 61 moves axially, it can move the first limiter 61 to the second limiter 62. An elastic member 71 exerts an axial extrusion force. The first elastic member 71 will elastically deform after being extruded, thereby increasing the damping of the first knob 31 and thereby limiting the free rotation of the first knob 31 . At the same time, the first elastic member 71 can exert axial pressure on the first knob 31 after being squeezed, so that the first knob 31 moves axially and exerts an axial squeezing force on the second knob 32 . The second knob 32 is axially close to the handle body 10 after receiving the axial extrusion force, and then squeezes the second elastic member 72 . The second elastic member 72 is elastically deformed after being squeezed, thereby increasing the pressure on the second knob 32 damping, thereby limiting the free rotation of the second knob 32. At this point, when the first knob 31 and the second knob 32 are rotated without external force, the first knob 31 and the second knob 32 are locked, thereby preventing the first knob 31 and the second knob 32 from rotating due to the restoring force of the insertion tube 20 , to achieve locking the bending angle of the insertion tube 20.

Further, in order to avoid the first knob 31 and the second knob 32 being locked due to the influence of contact friction when the first knob 31 or the second knob 32 is rotated to finely adjust the bending angle of the insertion tube 20 31 or the second knob 32 interact with each other. The handle bending locking mechanism according to an embodiment of the present application also includes a partition 91. The partition 91 is provided between the first knob 31 and the second knob 32. The partition 91 is provided There is a first through hole, and the second knob 32 is provided with an escape groove. The handle body 10 is connected to a column 92. One end of the column 92 passes through the escape groove and is inserted into the first through hole, so that the first knob is separated by a partition 91 31 and second knob 32, Direct contact between the first knob 31 and the second knob 32 is avoided, and at the same time, the column 92 is inserted into the first through hole of the partition 91 , thereby limiting the axial movement of the partition 91 along the fixed shaft 40 while not affecting the movement of the partition 91 along the fixed shaft 40 . The rotation of the partition 91 further avoids the problem of the first knob 31 and the second knob 32 interacting with each other due to the influence of contact friction, thereby enabling more precise adjustment of the bending angle of the insertion tube 20 . In one embodiment, the relief groove is an arc-shaped groove, thereby preventing the column 92 from affecting the rotation of the second knob 32 .

Continuing to refer to Figures 7 and 8, further, a first slope 621 is provided on a side of the second limiting member 62 close to the first limiting member 61, and a first slope 621 is provided on a side of the first limiting member 61 close to the second limiting member 62. A second inclined surface 611 is provided. The first inclined surface 621 slides with the second inclined surface 611. The second limiting member 62 has an unlocking position and a locking position. The second limiting member 62 can rotate between the unlocking position and the locking position. When the second limiting member 62 rotates from the unlocking position to the locking position, the first inclined surface 621 and the second inclined surface 611 slide and cooperate, thereby driving the first limiting member 61 to move in the axial direction, thereby causing the first limiting member 61 to move in the axial direction. Press the first elastic member 71 . When the second limiting member 62 rotates back to the unlocking position, the first limiting member 61 releases the first elastic member 71 .

Further, the first inclined surface 621 is provided with a first protrusion 622, and the second inclined surface 611 is provided with a first groove 612. When the second limiting member 62 is in the locking position, the first protrusion 622 is embedded in the first groove 612, thereby locking the second limiting member 62 in the locking position and preventing the second limiting member 62 from rotating. At the same time, when the first protrusion 622 enters the first groove 612, it will collide with the groove wall of the first groove 612 and produce a crisp sound, thereby reminding the operator that the second limiter 62 has rotated to the locking position, thereby avoiding rotation. Over the top. Of course, it is worth mentioning that in another embodiment, the first groove 612 can also be provided on the first inclined surface 621, and the first protrusion 622 can also be provided on the second inclined surface 611, so that the same can be achieved. The purpose of locking the second limiting member 62 in the locked position and reminding the operator that the second limiting member 62 is rotated into position will not be described again here. The first protrusion 622 is an arc-shaped protrusion, and correspondingly, the first groove 612 is an arc-shaped groove, thereby making it easier for the first protrusion 622 to enter or exit the first groove 612.

Referring to FIG. 3 , in order to prevent the second limiting member 62 from coming out of the fixed shaft 40 , in one embodiment, the handle bending control locking mechanism further includes a fixed cap 41 and a fifth threaded member 42 . The fixed cap 41 has a second through hole, and the fixed cap 41 is sleeved on the end of the fixed shaft 40 away from the handle body 10 . A fifth threaded hole is provided at one end of the fixed shaft 40 away from the handle body 10. The second through hole is connected with the fifth threaded hole. The fifth threaded member 42 is inserted into the second through hole and threadably matches with the fifth threaded hole. The fixed cap 41 is used to restrict the second limiting member 62 from coming out of the fixed shaft 40, and fixing the fixed cap 41 through the fifth threaded member 42 can prevent the fixed cap 41 from being driven when the rotating fixed member rotates, thus preventing the fixed cap 41 from loosening. This ensures the effectiveness of the bending control and locking function of the handle's bending control and locking mechanism on the insertion tube 20 .

In this application, the first wheel disk 51 or the second wheel disk 52 rotates to pull the pulling wire 80, thereby controlling the bending of the distal end of the insertion tube 20. Generally, the material of the pull wire 80 is mostly metal wire or other flexible wires. After multiple controlled bends, the pull wire 80 will stretch and become longer, causing the pull wire 80 to become loose, and then the pull wire 80 will inevitably have an empty stroke. The idle stroke means that the doctor needs to turn the first knob 31 or the second knob 32 to After a certain angle, the insertion tube 20 will start to bend. In this way, the maximum bending angle of the insertion tube 20 often does not reach the expectation. Insufficient bending angle of the insertion tube 20 will affect the doctor's ability to find the lesion or even miss the lesion. It will also affect the doctor's ability to analyze the disease. Operations such as stone removal and biopsy prolong the operation time and increase the patient's surgical risks.

Based on the above problems, the position of one end of the pull wire of the present application is adjustable on the roulette assembly 50, so that by adjusting the position of the pull wire relative to the roulette assembly, the tightness of the pull wire 80 can be adjusted, thus solving the problem of the backlash 80 missing. In one embodiment, for example, FIG. 10 shows the structure of the first wheel disk 51 . The first wheel disk 51 includes a first sleeve 54 and a disk body 53 connected to one end of the first sleeve 54 . The second wheel disk 52 has a similar structure to the first wheel disk 51 and includes a second sleeve (not shown) and a disk body (not shown) connected to one end of the second sleeve. The first sleeve 54 of the first wheel disk 51 is sleeved on the outside of the fixed shaft 40 and connected to the first knob 31 , and the second sleeve of the second wheel disk 52 is sleeved on the outside of the first sleeve 54 of the first wheel disk 51 And connected with the second knob 32. Further, for each wheel disk, the end of the pull wire 80 away from the distal end of the insertion tube 20 is adjustably disposed on the disk body, so that the pull wire 80 can be tightened in a direction away from the distal end of the insertion tube 20 . When long-term use causes the pulling wire 80 to stretch and become loose, the pulling wire 80 can be further tightened by adjusting the position of the end of the pulling wire 80 away from the far end of the insertion tube 20 on the disk body 53 so that the pulling wire 80 It is re-tightened, thereby avoiding the phenomenon of 80 degrees of empty movement of the cable.

Referring to FIGS. 10 and 11 , in one embodiment, the wheel assembly 50 further includes a first threaded member 55 . The disk body 53 is provided with a first threaded hole 531 extending along the length direction of the pull wire 80 and penetrating the disk body 53 . The first threaded member 55 is threadedly engaged with the first thread hole 531 , and the pull wire 80 is passed through one end away from the far end of the insertion tube 20 in the first threaded hole 531 and connected with the first threaded member 55 . When the pull wire 80 is stretched and lengthened due to long-term use, thereby causing the pull wire 80 to become loose, the first threaded member 55 is rotated so that the first threaded member 55 moves in a direction away from the distal end of the insertion tube 20 , thereby moving away from the distal end of the insertion tube 20 . The pull wire 80 is tightened in the distal direction of the tube 20 so that the pull wire 80 is re-tightened, thus preventing the pull wire 80 from being idle.

Further, referring to FIGS. 12 to 14 , in this embodiment, the first threaded member 55 is provided with a first threading hole 551 and a second threading hole 552 that are connected in the axial direction. The diameter of the first threading hole 551 is larger than that of the second threading hole 551 . The diameter of the second threading hole is 552, and the guy wire 80 is threaded in the third Two threading holes 552. The end of the pull wire 80 away from the far end of the insertion tube 20 is provided with a first limiting portion 81. The first limiting portion 81 is located in the first threading hole 551. The diameter of the first limiting portion 81 is larger than the diameter of the second threading hole 552. Therefore, the end of the pull wire 80 away from the distal end of the insertion tube 20 and the first threaded member 55 can move in a direction away from the distal end of the insertion tube 20 synchronously, thereby tightening the pull wire 80 . It is worth noting that in other embodiments, the end of the pulling wire 80 away from the distal end of the insertion tube 20 can also be directly bound or fixed to the first threaded member 55 by adhesive bonding.

In this embodiment, each plate body 53 is provided with two pulling wires 80 , correspondingly, each plate body 53 is provided with two first threaded holes 531 , and each first threaded hole 531 is provided with a The first threaded component 55 and the two pulling wires 80 are connected to the two first threaded components 55 in one-to-one correspondence. Therefore, the four-way bending control of the insertion tube 20 is achieved through the two pulling wires 80 provided on the disk body of the first wheel disk 51 and the two pulling wires 80 provided on the disk body of the second wheel disk 52 .

Referring to FIGS. 15 and 16 , in another embodiment, the wheel assembly 50 further includes a second threaded member 56 , and the disc body 53 is provided with a second threaded hole 532 at an angle with the length direction of the pull wire 80 . In this embodiment, the axial direction of the second threaded hole 532 is perpendicular to the length direction of the pulling wire 80 . The second threaded member 56 is threadedly engaged with the second threaded hole 532 . The end of the pull wire 80 away from the far end of the insertion tube 20 is connected to the second threaded member 56 . The second threaded member 56 is used to retract the pull wire 80 so that the pull wire 80 can be inserted away from the insertion tube 20 . The tube 20 is tightened distally. When long-term use causes the pulling wire 80 to extend and become longer, thereby causing the pulling wire 80 to become loose, by rotating the second threaded member 56 , the pulling wire 80 can be gradually wound around the second threaded member 56 , thereby moving farther away from the insertion tube 20 Tighten the pull wire 80 in the end direction, so that the pull wire 80 is re-tightened, thereby avoiding the phenomenon of the pull wire 80 being idle.

Further, referring to FIGS. 17 to 19 , the second threaded member 56 is provided with a third threading hole 561 and a fourth threading hole 562 that are connected in the radial direction and penetrate the second threaded member 56 . The diameter of the third threading hole 561 is larger than The aperture of the fourth threading hole 562, the pulling wire 80 is threaded in the fourth threading hole 562, the end of the pulling wire 80 away from the far end of the insertion tube 20 is provided with a second limiting portion 82, and the second limiting portion 82 is located in the third threading hole. 561, the diameter of the second limiting portion 82 is larger than the diameter of the fourth threading hole 562. Thereby, the end of the pulling wire 80 away from the far end of the insertion tube 20 is connected and fixed with the second threaded member 56 , and when the second threaded member 56 is rotated, the pulling wire 80 can be wound around the second threaded member 56 , thereby tightening the pulling wire 80 . It is worth noting that in other embodiments, the end of the pulling wire 80 away from the distal end of the insertion tube 20 can also be directly bound or fixed on the second threaded member 56 by adhesive bonding.

Further, referring to Figure 15, the disk body 53 is also provided with a wire groove 533 that penetrates the disk body 53 in the radial direction. One end of the pull wire 80 away from the far end of the insertion tube 20 is passed through the wire groove 533 and connected to the second threaded member 56. This prevents the disk body 53 from affecting the pull wire 80 when the second threaded member 56 winds up the pull wire 80 .

In this embodiment, each plate body 53 is provided with two pull wires 80 , correspondingly, each plate body 53 is provided with two second threaded holes 532 , and each second threaded hole 532 is provided with a The second threaded component 56 and the two pulling wires 80 are connected to the two second threaded components 56 in one-to-one correspondence. Therefore, the four-way bending control of the insertion tube 20 is achieved through the two pulling wires 80 provided on the disk body of the first wheel disk 51 and the two pulling wires 80 provided on the disk body of the second wheel disk 52 .

Referring to FIGS. 20 to 24 , in yet another embodiment, the wheel assembly 50 includes a third threaded member 57 , and the disc body 53 is provided with a third threaded hole 535 and a fifth threading hole 534 . The fifth threading hole 534 extends along the length direction of the pulling wire 80 and penetrates the plate body 53 . The pulling wire 80 is threaded in the fifth threading hole 534 . The third threaded hole 535 is connected with the fifth threading hole 534 and is arranged at an included angle. In this embodiment, the third threaded hole 535 and the fifth threading hole 534 are arranged perpendicularly. The third threaded member 57 is threadedly engaged with the third threaded hole 535, wherein rotating the third threaded member 57 can cause the third threaded member 57 to move between the crimping position and the loosening position. In the crimping position, the third threaded member 57 can crimp the pull wire 80 in the fifth threading hole 534 . In the released position, the third threaded element 57 releases the pull wire 80 . Among them, when the handle bending control locking mechanism is working normally, the third threaded member 57 is in the crimping position. At this time, one end of the third threaded member 57 presses the pull wire 80, so that the pull wire 80 can be pulled when the disk body 53 is rotated. This further achieves controlled bending of the insertion tube 20 . It should be noted that when long-term use causes the pull wire 80 to stretch and become loose, the third threaded member 57 is unscrewed so that the third threaded member 57 enters the loosening position, so that the third threaded member 57 loosens the pull wire. 80. At this time, straightening the pull wire 80 away from the distal end of the insertion tube 20 can cause the pull wire 80 to be re-tightened, and then tighten the third threaded member 57 so that the third threaded member 57 re-enters the crimping position to compress the pull wire 80. , thereby keeping the pull wire 80 tight and avoiding the phenomenon that the pull wire 80 is idle.

In this embodiment, each plate body 53 is provided with two pull wires 80 . Correspondingly, each plate body 53 is provided with two third threaded holes 535 and two fifth threading holes 534 . A third threaded member 57 is provided in the threaded hole, and the two pulling wires 80 are connected to the two third threaded members 57 in one-to-one correspondence. Therefore, through the two pulling wires 80 provided on the body of the first wheel disk 51 and the two pulling wires 80 provided on the body of the second wheel disk 52 to control the bending of the insertion tube 20 in four directions.

Referring to Figures 25 and 26, in another embodiment, two fifth threading holes 534 are connected to each other. Along the trajectory of the fifth threading holes 534, a plurality of third threaded holes 535 are spaced on the plate 53. When After straightening the pull wire 80 in a direction away from the distal end of the insertion tube 20, By inserting the third threaded member 57 into different third threaded holes 535, different parts of the pull wire 80 can be compressed.

Furthermore, the handle bending control locking mechanism of the embodiment shown in Figure 21 does not need to make a hole in the third threaded member 57, and the tension of the pull wire 80 can be adjusted using standard threaded members such as standard bolts, and the process is simpler. Lower cost.

Further, referring to FIG. 2 and FIG. 9 , the first housing 11 includes a first connecting part 111 , the second housing 12 includes a second connecting part 121 , and the first connecting part 111 and the second connecting part 121 are connected through a fourth thread. 14 are connected, thereby realizing the connection and fixation of the first housing 11 and the second housing 12 . Further, the first connection part 111 is provided with a second protrusion 122, the second connection part 121 is provided with a second groove 112, and the second protrusion 122 is inserted into the second groove 112, so that the first connection part The mating surfaces of the first connecting portion 111 and the second connecting portion 121 form a stepped structure, thereby preventing the pulling wire 80 from entering the mating gap between the first connecting portion 111 and the second connecting portion 121 , and further preventing the pulling wire 80 from interfacing with the first connecting portion 111 and the second connecting portion 121 . The two connecting portions 121 are broken due to friction. Of course, in another embodiment, the second groove 112 can also be provided on the first connecting part 111, and the second protrusion 122 can also be provided on the second connecting part 121, which can also prevent wire pulling. The purpose of 80 fracture will not be described in detail here.

Further, referring to Figures 27 and 28, the handle bending control locking mechanism also includes a ferrule 15 and a strap 16. The ferrule 15 and the strap 16 are spaced apart from the handle body 10. The ferrule 15 is provided for fixing another handle. The fixing groove 151 of the endoscope and the strap 16 are used to bind another endoscope. Many operations require two endoscopes to be used together. The two endoscopes can be called the secondary endoscope and the main endoscope respectively. In order to facilitate the doctor's surgical operation and reduce the operation time, it is often necessary to fix the secondary endoscope and the main endoscope together. Convenient for doctors to use together. The handle bending control locking mechanism of this embodiment is provided with ferrules 15 and straps 16 at intervals on the handle body 10 of the secondary mirror. The ferrule 15 is engaged with the handle body of the master mirror through the fixing groove 151 of the ferrule 15 . The belt 16 is bound to the handle body of the mother mirror, so that the mother mirror has two fixed points, so that the mother mirror is firmly fixed on the handle body 10 of the child mirror, thus avoiding the occurrence of the mother mirror when the child mirror is used in conjunction with the mother mirror. Shake. In this embodiment, the ferrule 15 and the strap 16 are arranged on the same side of the handle body 10, and the ferrule 15 is close to the distal end of the handle body 10, and the strap 16 is close to the proximal end of the handle body 10. When connecting the mother mirror, The ferrule 15 is engaged with the rear end of the handle body of the mother mirror (the end close to the insertion tube), and the strap 16 is bound with the upper middle part of the handle body of the mother mirror.

In another aspect, the present application also provides an endoscope handle, which includes the handle bending control locking mechanism of any of the above embodiments. The specific structure of the handle bending control locking mechanism and the beneficial effects thereof can be found in the previous description, and will not be described in detail here.

This application also provides an endoscope system. The endoscope system includes the above-mentioned endoscope handle and an insertion tube. The proximal end of the insertion tube is connected to the endoscope handle. The endoscope handle can be used to control the bending or realization of the insertion tube. Check out other features.

Further, referring to Figures 29 to 30, in this embodiment, the insertion tube 20 includes an insertion tube body 201, a head end piece 202, an inner sleeve 22 and an outer sleeve 23. The inner sleeve 22 is sleeved on the insertion tube body 201. The distal end of the outer sleeve 23 is sleeved on the proximal end of the head end piece 202, and the other end of the outer sleeve 23 is sleeved on the inner sleeve 22. The head end piece 202 is provided with a first instrument channel 212, and the insertion tube body 201 There is a second instrument channel 212 connected with the first instrument channel 212, and both the first instrument channel 212 and the second instrument channel 211 are used for inserting instruments. Furthermore, the central axis of the first instrument channel 212 and the central axis of the second instrument channel 211 are arranged asynchronously. This design makes the head end layout of the insertion tube 20 more reasonable, and the outlet of the first instrument channel 212 is offset from the center of the head end. , providing more space for cameras, light sources and other components. In order to avoid bending and breakage when the instrument penetrates from the second instrument channel 211 to the first instrument channel 212, there is a transition interval 24 between the outlet of the second instrument channel 211 and the entrance to the first instrument channel 212. When the second instrument channel 211 penetrates into the first instrument channel 212, the transition interval 24 can leave a certain transition space for the instrument, thereby avoiding the need for the instrument to bend at a large angle due to the non-coaxiality of the first instrument channel 212 and the second instrument channel 211. Only by folding can the first instrument channel 212 be entered, thereby avoiding instrument breakage and damage.

Further, referring to Figures 31 and 32, the proximal end of the head end piece 202 is provided with a protruding portion 203 protruding in a direction close to the insertion tube body. The protruding portion 203 is used to guide the instrument inserted into the first instrument channel 212. And fixed, so that the instrument can be accurately inserted into the first instrument channel 212 after coming out of the second instrument channel 211, thereby preventing the instrument from being inserted into other positions such as the gap between the inner cannula 22 and the insertion tube 20. In one embodiment, the proximal end of the handle body 10 is provided with at least two bosses, and the at least two bosses are spaced along the axial direction of the proximal end of the handle body 10, thereby improving the guidance and fixation effect of the instrument.

In this application, when the bending control locking mechanism of the handle needs to control the bending of the insertion tube, the bending control component can be driven to move by turning the knob assembly. When the bending control component moves, the pull wire can pull the distal end of the insertion tube to bend and turn. After the insertion tube is bent to a suitable angle, when it is necessary to lock the angle of the insertion tube, by moving at least part of the limiting component along the axial direction of the fixed shaft, the axial movement of the limiting component can exert an axial force on the elastic member. Extrusion force, the elastic member will undergo elastic deformation after being extruded, which increases the damping of the knob assembly, thereby limiting the free rotation of the knob assembly when there is no external force to rotate the knob assembly, thereby avoiding the roulette assembly caused by the restoring force of the insertion tube. Rotate the problem to achieve a locked bending angle of the insertion tube. Moreover, the friction force of the elastic member on the knob assembly limits the rotation of the knob assembly and does not lock the knob assembly. At this time, by applying a force greater than the friction force to the knob assembly, the knob assembly can be rotated again, thereby achieving Insertion Fine-tune the bending angle of the insertion tube until the insertion tube is adjusted to the required bending state.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of this patent application should be determined by the appended claims.

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the application.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In this application, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; 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 an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Claims (24)

1. A handle bending control locking mechanism includes:

   a fixed shaft, which is used to be installed on the handle body;

   Knob assembly, the knob assembly is movably sleeved on the fixed shaft and connected to the bending control assembly, so that when the knob assembly rotates, it drives the movement of the bending control assembly, and then the movement of the bending control assembly makes the insertion The distal end of the tube develops a bend;

   An elastic member, the elastic member is arranged in contact with the knob assembly; and,

   Limiting component, the limiting component is sleeved on the fixed shaft, and at least part of the limiting component can move along the axial direction of the fixed shaft to squeeze the knob component and the elastic member, so that the The elastic member locks the rotation of the knob assembly.
2. The handle bending control locking mechanism according to claim 1, wherein the limiting component includes:

   A first limiting member, the first limiting member is sleeved on the fixed shaft and can move along the axial direction of the fixed shaft; and,

   The second limiting member is rotatably sleeved on the fixed shaft. The second limiting member is in contact with the first limiting member. When the second limiting member When rotating around the fixed shaft, the second limiting member drives the first limiting member to move along the axial direction of the fixed shaft.
3. The handle bending control locking mechanism according to claim 2, wherein a first slope is provided on a side of the second limiter close to the first limiter, and the first limiter is close to the A second inclined surface is provided on one side of the second limiting member, and the first inclined surface is in sliding fit with the second inclined surface; the second limiting member can rotate between the unlocking position and the locking position to drive the third A limiting member moves along the axial direction of the fixed shaft. When the second limiting member is in the unlocking position, the first limiting member releases the knob assembly and the elastic member; the third limiting member When the two limiting members are in the locking position, the first limiting member presses the knob assembly and the elastic member.
4. The handle bending control locking mechanism according to claim 3, wherein the first inclined surface is provided with a first protrusion, the second inclined surface is provided with a first groove, and the second limiting member is provided with a first groove on the second inclined surface. When in the locked position, the first protrusion is embedded in the first groove.
5. The handle bending control locking mechanism according to claim 3, wherein the first inclined surface is provided with a first groove, the second inclined surface is provided with a first protrusion, and the second limiting member is provided with a first groove on the second inclined surface. When in the locked position, the first protrusion is embedded in the first groove.
6. The handle bending control locking mechanism according to claim 3, wherein the bending control assembly includes:

   A roulette assembly, the roulette assembly is rotatably sleeved on the fixed shaft and connected to the knob assembly, and the roulette assembly can rotate around the fixed shaft driven by the knob assembly; and,

   A pull wire, one end of which is connected to the roulette assembly, and the other end of which is used to connect to the distal end of the insertion tube, so that when the roulette assembly rotates around the fixed axis, the The pull wire pulls the distal end of the insertion tube to create a bend.
7. The handle bending control locking mechanism according to claim 6, wherein the wheel disk assembly includes a first wheel disk and a second wheel disk, and the first wheel disk and the second wheel disk are along the fixed axis. The axial direction is sleeved on the fixed shaft in sequence, and the first wheel disk and the second wheel disk are each connected with at least one of the pull wires; the knob assembly includes a first knob and a second knob, so The first knob and the second knob are sleeved on the fixed shaft in sequence along the axial direction of the fixed shaft, and the first knob is connected to the first wheel, and the second knob is connected to the fixed shaft. Said second roulette connection.
8. The handle bending control locking mechanism according to claim 7, wherein the elastic member includes:

   A first elastic member, the first elastic member is provided between the limiting component and the first knob; and,

   A second elastic member is provided between the second knob and the handle body.
9. The handle bending control locking mechanism according to claim 7, wherein the handle bending control locking mechanism further includes a partition, the partition is disposed between the first knob and the second knob, so The partition is provided with a first through hole, the second knob is provided with an escape groove, the handle body is connected to a column, and one end of the column passes through the escape groove and is inserted into the first through hole. .
10. The handle bending control locking mechanism according to claim 7, wherein the first wheel disk includes a first sleeve and a disk body connected to one end of the first sleeve, and the second wheel disk includes a second shaft sleeve and a disk body connected to one end of the second shaft sleeve. The first shaft sleeve of the first wheel disk is sleeved outside the fixed shaft and connected to the first knob. The second wheel disk The second bushing is sleeved outside the first bushing of the first wheel and is connected to the second knob.
11. The handle bending control locking mechanism according to claim 10, wherein each of the disks is connected to at least one of the pull wires, and the end of each of the pull wires away from the distal end of the insertion tube can be positioned Adjustably arranged on the plate body.
12. The handle bending control locking mechanism according to claim 11, wherein the wheel disk assembly further includes a first threaded member, and the disk body is provided with a third thread extending along the length direction of the pull wire and penetrating the disk body. A threaded hole, the first threaded member is threadedly matched with the first threaded hole, and one end of the pull wire away from the distal end of the insertion tube is passed through the first threaded hole and is in contact with the first threaded hole. pieces connect.
13. The handle bending control locking mechanism according to claim 12, wherein the first threaded member is provided with a first threading hole and a second threading hole connected along the axial direction, and the aperture of the first threading hole is larger than the diameter of the threading hole. The aperture of the second threading hole, the pulling wire is passed through the second threading hole, the end of the pulling wire away from the distal end of the insertion tube is provided with a first limiting part, the first limiting part is located at In the first threading hole, the diameter of the first limiting portion is larger than the diameter of the second threading hole.
14. The handle bending control locking mechanism according to claim 11, wherein the wheel disk assembly further includes a second threaded member, and the disk body is provided with a second threaded hole at an angle with the length direction of the pull wire. The second threaded member is threadedly engaged with the second threaded hole. One end of the pull wire away from the distal end of the insertion tube is connected to the second threaded member. The second threaded member is used to retract the pull wire. To tighten the pull wire in a direction away from the distal end of the insertion tube.
15. The handle bending control locking mechanism according to claim 14, wherein the second threaded member is radially provided with a third threading hole and a fourth threading hole that are connected and penetrate the second threaded member, and the third threading hole is connected to the second threaded member. The aperture of the threading hole is larger than the aperture of the fourth threading hole, the pulling wire is passed through the fourth threading hole, and an end of the pulling wire away from the distal end of the insertion tube is provided with a second limiting portion, The second limiting portion is located in the third threading hole, and the diameter of the second limiting portion is larger than the diameter of the fourth threading hole.
16. The handle bending control locking mechanism according to claim 11, wherein the wheel disk assembly further includes a third threaded member, the disk body is provided with a third threaded hole and a fifth threading hole, and the fifth threading hole Extending along the length direction of the pull wire and penetrating the plate body, the pull wire is passed through the fifth threading hole, the third threaded hole is connected with the fifth threading hole and is arranged at an included angle, The third threaded member is threadedly matched with the third threaded hole, and the third threaded member is used to press the pull wire in the fifth threading hole or loosen the pull wire.
17. The handle bending control locking mechanism according to claim 1, wherein the handle bending control locking mechanism further includes a fixing cap and a fifth threaded member, the fixing cap is provided with a second through hole, and the fixing cap is sleeved on One end of the fixed shaft away from the handle body is provided with a fifth threaded hole, the second through hole is connected with the five threaded hole, and the fifth threaded member is passed through The second through hole is threadedly matched with the fifth threaded hole.
18. An endoscope handle, the endoscope handle includes the handle bending control locking mechanism according to any one of the above claims 1-17, and a handle body.
19. The endoscope handle according to claim 18, wherein the handle body includes a first shell and a second shell that interlock, and the first shell and the second shell are enclosed to form an installation cavity, the bending control component is located in the installation cavity; the knob assembly, the elastic member and the limiting component are all located outside the installation cavity.
20. The endoscope handle according to claim 19, wherein the first housing includes a first connection part, the second housing includes a second connection part, and the first connection part and the second connection part pass through The fourth threaded parts are connected; the first connection part is provided with a second protrusion, the second connection part has a second groove, and the second protrusion is inserted into the second groove.
21. The endoscope handle according to claim 19, wherein the first housing includes a first connection part, the second housing includes a second connection part, and the first connection part and the second connection part pass through The fourth threaded parts are connected; the first connecting part is provided with a second groove, the second connecting part is provided with a second protrusion, and the second protrusion is inserted into the second groove.
22. An endoscope system, including the endoscope handle according to any one of claims 18 to 21 and an insertion tube, the proximal end of the insertion tube being connected to the endoscope handle.
23. The endoscope system according to claim 22, wherein the insertion tube includes an insertion tube body, a head end piece, an inner cannula, and an outer cannula, and the inner cannula is sleeved on the distal end of the insertion tube body. , one end of the outer sleeve is sleeved on the proximal end of the head end piece, the other end of the outer sleeve is sleeved on the inner sleeve, the head end piece is provided with a first instrument channel, and the insertion The tube body is provided with a second instrument channel connected with the first instrument channel, the central axis of the first instrument channel and the central axis of the second instrument channel are arranged non-axially, and the second instrument channel and the central axis of the second instrument channel are arranged non-axially. There is a transition space between the first instrument channels.
24. The endoscope system according to claim 23, wherein the proximal end of the head end piece is provided with a protruding portion protruding toward the direction close to the insertion tube body, and the protruding portion is used for inserting the insertion tube. The instruments in the first instrument channel are guided and fixed.