CN217592824U - Handle bending control mechanism, endoscope handle and endoscope system - Google Patents

Abstract

The utility model relates to a handle accuse curved mechanism, endoscope handle and endoscope system. The handle bending control mechanism comprises a handle bending control mechanism which comprises a fixed shaft, a wheel disc and a pull wire. Wherein, the fixed axle is used for installing at the handle body, and the fixed axle is rotationally located to the rim plate cover. One end position of the stay wire is adjustably arranged on the wheel disc. The other end of the pull wire is used for being connected with the far end of the insertion tube, so that when the wheel disc rotates around the fixed shaft, the pull wire pulls the far end of the insertion tube to bend. The handle bending control mechanism can adjust the mounting position of one end, far away from the insertion pipe, of the stay wire on the wheel disc, so that the stay wire is tightened again, and the bending control idle stroke phenomenon is avoided.

Description

Handle bending control mechanism, endoscope handle and endoscope system

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to a handle accuse curved mechanism, endoscope handle and endoscope system.

Background

The medical endoscope is mainly applied to surgical operations and routine medical examinations, and when in clinical use, a doctor can extend the lens of the endoscope into the body by utilizing natural holes of the body or making tiny wounds on the body, and then can carry out closed operation in the body outside the body through other surgical instruments and a camera shooting and displaying system. Compared with the traditional surgical operation, the minimally invasive operation adopting the medical endoscope has small wound and quick recovery after the operation of a patient, so the medical endoscope is widely applied.

The medical endoscope comprises an operating handle and an insertion tube, wherein the insertion tube is used for being inserted into a body, the far end of the insertion tube is provided with components such as an LED (light emitting diode), a lens and the like, and the lens at the far end of the insertion tube is used for acquiring image information in the body of a patient and feeding the image information back to a screen connected with a host machine to carry out minimally invasive surgery or medical examination. In order to better control the lens at the distal end of the insertion tube to accurately find the focus, the distal end of the insertion tube needs to be pulled to bend by a pull wire controlled by a knob on an operating handle, and generally, the pull wire is mostly made of a metal wire or other soft wire materials. The stay wire can extend and become long after controlling the bend many times, lead to the stay wire to become lax, and then the unavoidable curved idle stroke phenomenon of controlling can appear, the idle stroke phenomenon of controlling the bend needs the doctor to rotate the knob to certain angle after, the intubate just can begin to bend, the biggest bending angle of intubate often can not reach the expectation like this, the bending angle of intubate can influence the doctor not enough and look for the focus, omit the focus even, also can influence operations such as doctor's rubble, biopsy simultaneously, the operating time has been prolonged, patient's operation risk increases.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a handle bending control mechanism, an endoscope handle and an endoscope system, which can avoid the problem of bending control idle stroke.

In one aspect, the application provides a curved mechanism of handle accuse includes:

the fixed shaft is used for being installed on the handle body;

the wheel disc is rotatably sleeved on the fixed shaft; and the number of the first and second groups,

the pull wire is arranged at one end of the pull wire in a position-adjustable mode and the other end of the pull wire is used for being connected with the far end of the insertion tube, so that when the wheel disc rotates around the fixed shaft, the pull wire pulls the far end of the insertion tube to be bent.

The technical scheme of the application is further explained as follows:

in one embodiment, the handle bending control mechanism further comprises a first threaded member, the wheel disc is provided with a first threaded hole which extends along the length direction of the pull wire and penetrates through the wheel disc, the first threaded member is in threaded fit with the first threaded hole, and one end of the pull wire penetrates through the first threaded hole and is connected with the first threaded member.

In one embodiment, the first threaded part is provided with a first threading hole and a second threading hole which are communicated with each other along the axial direction, the aperture of the first threading hole is larger than that of the second threading hole, the stay wire is arranged in the second threading hole in a penetrating mode, one end of the stay wire is provided with a first limiting part, the first limiting part is located in the first threading hole, and the diameter of the first limiting part is larger than that of the second threading hole.

In one embodiment, the handle bending control mechanism includes a second threaded part, the wheel disc is provided with a second threaded hole forming an included angle with the length direction of the pull wire, the second threaded part is in threaded fit with the second threaded hole, one end of the pull wire is connected with the second threaded part, and the second threaded part is used for furling the pull wire so that the pull wire is tightened in a direction away from the insertion tube.

In one embodiment, the second threaded element is provided with a third threading hole and a fourth threading hole which are communicated with each other and penetrate through the second threaded element along the radial direction, the aperture of the third threading hole is larger than that of the fourth threading hole, the stay wire is arranged in the fourth threading hole in a penetrating manner, one end of the stay wire is provided with a second limiting part, the second limiting part is positioned in the third threading hole, and the diameter of the second limiting part is larger than that of the fourth threading hole.

In one embodiment, the handle bending control mechanism further comprises a third threaded element, the wheel disc is provided with a third threaded hole and a fifth threaded hole, the fifth threaded hole extends along the length direction of the pull wire and penetrates through the wheel disc, the pull wire is arranged in the fifth threaded hole in a penetrating mode, the third threaded hole is communicated with the fifth threaded hole and is arranged at an included angle, the third threaded element is in threaded fit with the third threaded hole, and the third threaded element is used for pressing and connecting the pull wire in the fifth threaded hole or loosening the pull wire.

In one embodiment, the number of the wheel discs is at least two, all the wheel discs are sequentially sleeved on the fixed shaft, and each wheel disc is connected with at least one pull wire.

In one embodiment, the handle bending control mechanism further comprises a knob, the knob is rotatably sleeved on the fixed shaft and connected with the wheel disc, and the knob is used for driving the wheel disc to rotate.

On the other hand, the application also provides an endoscope handle, which comprises the handle bending control mechanism and a handle body.

In another aspect, the present application further provides an endoscope system comprising the endoscope handle and an insertion tube, wherein the proximal end of the insertion tube is connected with the endoscope handle.

The handle bending control mechanism, the endoscope handle and the endoscope system enable the wheel disc to pull the pull wire towards the direction far away from the insertion tube by rotating the wheel disc, and the far end of the insertion tube pulled by the pull wire can be bent. And one end of the stay wire is adjustably arranged on the wheel disc, so that the installation position of the stay wire on the wheel disc can be adjusted. When the stay wire is extended for a long time and becomes loose, the stay wire is tightened by adjusting the mounting position of one end of the stay wire, which is far away from the insertion pipe, on the wheel disc, so that the stay wire is tightened again, and the phenomenon of bending control idle stroke is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of an endoscope handle according to an embodiment;

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

FIG. 3 is an enlarged partial view of the endoscope handle shown in FIG. 1;

FIG. 4 is a first internal view of an endoscope handle according to an embodiment;

FIG. 5 is a second internal view of the endoscope handle according to an embodiment;

FIG. 6 is a partial exploded view of the handle bend control mechanism shown in FIG. 1;

FIG. 7 is a schematic view of an embodiment of a connection between a pull line and a turntable;

FIG. 8 is a top view of the pull wire and turntable shown in FIG. 7;

FIG. 9 is a schematic structural view of a first threaded member according to an embodiment;

FIG. 10 is a schematic structural diagram of a pull wire according to an embodiment;

FIG. 11 is a schematic view showing a connection structure of the first screw member shown in FIG. 9 and the wire pull shown in FIG. 10;

FIG. 12 is a schematic view of another embodiment of the connection of a pull wire to a turntable;

FIG. 13 is a top view of the pull wire and turntable shown in FIG. 12;

FIG. 14 is a schematic structural view of a second threaded element according to an embodiment;

FIG. 15 is a schematic structural view of a pull wire according to another embodiment;

FIG. 16 is a schematic view showing a connection structure of the second screw member shown in FIG. 14 and the pulling wire shown in FIG. 15;

FIG. 17 is a schematic view of a connection between a pull wire and a turntable according to yet another embodiment;

FIG. 18 is a cross-sectional view of the pull wire and turntable shown in FIG. 12;

FIG. 19 is a top view of the pull wire and turntable shown in FIG. 12;

FIG. 20 is a schematic structural diagram of a turntable according to an embodiment;

FIG. 21 is a top view of the turntable shown in FIG. 20;

FIG. 22 is a schematic view of a connection between a pull wire and a turntable according to yet another embodiment;

fig. 23 is a top view of the turntable shown in fig. 22.

Description of reference numerals:

10. a handle body; 11. a first housing; 12. a second housing; 13. a mounting cavity; 20. an insertion tube; 31. a first knob; 32. a second knob; 40. a fixed shaft; 51. a first wheel disc; 52. a second wheel disc; 53. a tray body; 531. a first threaded hole; 532. a second threaded hole; 533. a wire slot; 534. a fifth threading hole; 535. a third threaded hole; 54. a shaft sleeve; 55. a first threaded member; 551. a first threading hole; 552. a second threading hole; 56. a second threaded member; 561. a third threading hole; 562. a fourth threading hole; 57. a third screw member; 80. a pull wire; 81. a first limiting part; 82. a second limiting part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are 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 invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

Specifically, in this application "proximal" refers to the end of the component that is proximal to the operator; "distal" refers to the end of the member distal to the operator.

The endoscope system of an embodiment includes an endoscope handle and an insertion tube 20, the insertion tube 20 is used for extending into a human body through a natural hole of the human body or making a tiny wound on the human body, a proximal end of the insertion tube 20 is connected with the endoscope handle, and a distal end of the insertion tube 20 is provided with an LED, a lens and the like, so as to obtain image information in the human body. The distal end of insertion tube 20 may be manipulated by an endoscope handle to bend or perform other functions for examination.

In order to control the bending of the distal end of the insertion tube 20 for examination or other surgical operations, another aspect of the present application provides an endoscope handle, which includes a handle bending control mechanism and a handle body 10, and the endoscope handle of an embodiment includes a first housing 11 and a second housing 12 that are fastened together, the first housing 11 and the second housing 12 enclose a mounting cavity 13, and at least a portion of the handle bending control mechanism is disposed in the mounting cavity 13, as shown in fig. 1 and 2.

See fig. 2 to 5, in particular. The application further provides a handle bending control mechanism, and particularly the handle bending control mechanism of one embodiment comprises a fixed shaft 40, a wheel disc and a pull wire 80. Wherein, the fixed shaft 40 is used for being installed on the handle body 10, and the wheel disc is rotatably sleeved on the fixed shaft 40. One end of the stay wire 80 is adjustably arranged on the wheel disc. The other end of the wire 80 is adapted to be coupled to the distal end of the insertion tube 20 such that the wire 80 pulls the distal end of the insertion tube 20 to bend as the pulley rotates about the fixed shaft 40.

Further, one end of the fixing shaft 40 is fixedly connected with the second housing 12 of the handle body 10, and the other end of the fixing shaft 40 passes through the first housing 11 of the handle body 10 and extends out of the mounting cavity 13, so that the fixing shaft 40 forms a first section located in the mounting cavity 13 and a second section located outside the mounting cavity 13. The wheel disc is arranged in the mounting cavity 13 and sleeved on the first section of the fixed shaft 40. Preferably, the handle bending control mechanism further comprises a knob, the knob is rotatably sleeved on the second section of the fixing shaft 40 and is connected with the wheel disc, so that the wheel disc positioned in the handle body 10 can be driven to rotate by rotating the knob outside the handle body 10, and then the pull wire 80 is driven to pull the distal end of the insertion tube 20 to be bent, and the operation is more convenient.

The handle bending control mechanism rotates the wheel disc to enable the wheel disc to pull the pull wire 80 towards the direction far away from the insertion tube 20, and the pull wire 80 can pull the far end of the insertion tube 20 to bend. And the installation position of the wire 80 on the wheel disc is adjustable by arranging one end of the wire 80 on the wheel disc in an adjustable way. When the stay wire 80 is extended and lengthened due to long-term use and the stay wire 80 becomes loose, the stay wire 80 is tightened by adjusting the mounting position of one end of the stay wire 80, which is far away from the insertion tube 20, on the wheel disc, so that the stay wire 80 is tightened again, and the phenomenon of bending control idle running is avoided.

Further, the handle bending control mechanism comprises at least two wheel discs, all the wheel discs are sequentially sleeved on the fixed shaft 40 along the axial direction of the fixed shaft 40, and each wheel disc is connected with at least one pull wire 80. Correspondingly, the handle bending control mechanism comprises at least two knobs, all the knobs are sequentially sleeved on the fixing shaft 40 along the axial direction of the fixing shaft 40, and the knobs are connected with the wheel discs in a one-to-one correspondence manner, so that the insertion tube 20 can be bent in multiple directions.

Referring to fig. 2 to 6, for example, in the present embodiment, the handle bending control mechanism is provided with two wheel discs and two knobs, the two wheel discs are a first wheel disc 51 and a second wheel disc 52, the first wheel disc 51 and the second wheel disc 52 are sequentially sleeved on the fixed shaft 40 along the axial direction of the fixed shaft 40, and the first wheel disc 51 and the second wheel disc 52 are respectively connected with at least one pull wire 80. Correspondingly, the two knobs are respectively a first knob 31 and a second knob 32, the first knob 31 and the second knob 32 are sequentially sleeved on the fixing shaft 40 along the axial direction of the fixing shaft 40, the first knob 31 is connected with the first wheel disc 51, and the second knob 32 is connected with the second wheel disc 52. Preferably, two pull wires 80 are connected to the first wheel 51, so that by rotating the first knob 31 in different directions, the first wheel 51 can be driven to rotate in corresponding directions, thereby controlling the insertion tube 20 to bend in two different directions, such as left and right directions. Similarly, the second wheel disc 52 is connected with two pull wires 80, so that the second wheel disc 52 can be driven to rotate in different directions by rotating the second knob 32 in different directions, and the insertion tube 20 can be controlled to bend in two different directions, such as up and down directions. Understandably, the number of the discs and the number of the knobs are not limited to two, and in other embodiments, the number of the discs and the number of the knobs may be more or less. Similarly, the number of wires 80 connected to each wheel is not limited to two, and in other embodiments, there may be more or fewer wires 80. Controlled bending of the insertion tube 20 is also achieved in this way.

Referring to fig. 3, in the present embodiment, each of the first wheel disc 51 and the second wheel disc 52 includes a shaft sleeve 54 and a disc body 53 connected to one end of the shaft sleeve 54, the shaft sleeve 54 of the first wheel disc 51 is sleeved on the fixed shaft 40 and connected to the first knob 31, and the shaft sleeve 54 of the second wheel disc 52 is sleeved on the shaft sleeve 54 of the first wheel disc 51 and connected to the second knob 32. The disc body 53 of the first wheel disc 51 and the disc body 53 of the second wheel disc 52 are both connected with a pull wire 80 in an adjustable position.

Referring to fig. 7 and 8, in one embodiment, the handle bending control mechanism further includes a first screw 55, the tray 53 is provided with a first threaded hole 531 extending along the length direction of the pulling wire 80 and penetrating through the tray 53, the first screw 55 is in threaded fit with the first threaded hole 531, one end of the pulling wire 80 away from the insertion tube 20 is inserted into the first threaded hole 531 and connected with the first screw 55, when the pulling wire 80 extends and lengthens in a long time use, and the pulling wire 80 becomes loose, the first screw 55 is rotated to move the first screw 55 away from the insertion tube 20, so that the pulling wire 80 is tightened away from the insertion tube 20, and the pulling wire 80 is tightened again, thereby avoiding a phenomenon that the pulling wire 80 runs freely.

Further, referring to fig. 9 to 11, in this embodiment, the first threaded member 55 is axially provided with a first threading hole 551 and a second threading hole 552 that are communicated with each other, an aperture of the first threading hole 551 is larger than an aperture of the second threading hole 552, the pull wire 80 is inserted into the second threading hole 552, one end of the pull wire 80 away from 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, and a diameter of the first limiting portion 81 is larger than an aperture of the second threading hole 552, so that one end of the pull wire 80 away from the insertion tube 20 and the first threaded member 55 can synchronously move in a direction away from the insertion tube 20, and the pull wire 80 is tightened. It should be noted that in other embodiments, the end of the pull wire 80 remote from the insertion tube 20 may be directly bonded or adhesively secured to the first threaded member 55.

Preferably, in the present embodiment, each tray body 53 is provided with two pull wires 80, correspondingly, each tray body 53 is provided with two first threaded holes 531, one first threaded member 55 is disposed in each first threaded hole 531, and the two pull wires 80 are connected to the two first threaded members 55 in a one-to-one correspondence manner, so that the four-way bending control of the insertion tube 20 is realized through the four pull wires 80.

Referring to fig. 12 and 13, in another embodiment, the handle bending control mechanism includes a second screw member 56, the tray 53 defines a second threaded hole 532 forming an angle with the length direction of the wire 80, and preferably, the axial direction of the second threaded hole 532 is perpendicular to the length direction of the wire 80. The second threaded member 56 is threadedly engaged with the second threaded hole 532, and the end of the pull wire 80 away from the insertion tube 20 is connected to the second threaded member 56, and the second threaded member 56 is used for retracting the pull wire 80 so as to tighten the pull wire 80 away from the insertion tube 20. Specifically, when the pulling wire 80 is extended and loosened due to long-term use, the pulling wire 80 can be gradually wound around the second screw member 56 by rotating the second screw member 56, so that the pulling wire 80 is tightened in a direction away from the insertion tube 20, and the pulling wire 80 is re-tightened, thereby preventing the occurrence of the idle stroke of the pulling wire 80.

Further, referring to fig. 14 to 16, the second threaded member 56 is radially provided with a third threading hole 561 and a fourth threading hole 562 which are communicated with each other and penetrate through the second threaded member 56, the aperture of the third threading hole 561 is larger than that of the fourth threading hole 562, the pull wire 80 is threaded in the fourth threading hole 562, one end of the pull wire 80, which is far away from the insertion tube 20, is provided with a second limiting portion 82, the second limiting portion 82 is located in the third threading hole 561, and the diameter of the second limiting portion 82 is larger than that of the fourth threading hole 562. So that the end of the pulling wire 80 away from the insertion tube 20 is fixedly connected to the second threaded member 56, and the pulling wire 80 is wound around the second threaded member 56 when the second threaded member 56 is rotated, thereby tightening the pulling wire 80. It should be noted that in other embodiments, the end of the pull wire 80 remote from the insertion tube 20 may be directly bonded or adhesively secured to the second threaded member 56.

Further, referring to fig. 12, the tray body 53 further defines a wire groove 533 radially penetrating through the tray body 53, and an end of the wire 80 away from the insertion tube 20 is inserted into the wire groove 533 and connected to the second screw 56, so as to prevent the wire 80 from interfering with the tray body 53 when the second screw 56 retracts the wire 80.

Preferably, in the present embodiment, each tray body 53 is provided with two pull wires 80, correspondingly, each tray body 53 is provided with two second threaded holes 532, each second threaded hole 532 is provided with one second threaded member 56, and the two pull wires 80 are connected to the two second threaded members 56 in a one-to-one correspondence, so that the four-way bending control of the insertion tube 20 is realized through the four pull wires 80.

Referring to fig. 17 to 21, in another embodiment, the handle bending control mechanism includes a third threaded member 57, the tray body 53 defines a third threaded hole 535 and a fifth threaded hole 534, the fifth threaded hole 534 extends along the length direction of the pull wire 80 and penetrates through the tray body 53, the pull wire 80 is threaded through the fifth threaded hole 534, the third threaded hole 535 is connected to the fifth threaded hole 534 and is disposed at an angle, and preferably, the third threaded hole 535 is perpendicular to the fifth threaded hole 534. The third screw 57 is screwed with the third screw hole 535, specifically, the third screw 57 can be moved between a crimping position and a releasing position by rotating the third screw 57, and in the crimping position, the third screw 57 can crimp the pulling wire 80 in the fifth threading hole 534; in the release position, the third threaded member 57 releases the pull wire 80. Specifically, when the handle bending control mechanism works normally, the third threaded element 57 is in the pressing position, and at this time, one end of the third threaded element 57 presses the pull wire 80, so that the pull wire 80 can be pulled by the rotating disc 53, thereby controlling the bending of the insertion tube 20. It should be noted that, when the pulling wire 80 is extended and becomes loose due to long-term use, the third threaded member 57 is loosened to move the third threaded member 57 into the loosening position, so that the third threaded member 57 loosens the pulling wire 80, and at this time, the pulling wire 80 is straightened away from the insertion tube 20 to tighten the pulling wire 80 again, and then the third threaded member 57 is tightened to move the third threaded member 57 into the crimping position again to compress the pulling wire 80, so that the pulling wire 80 is kept tight, and the phenomenon that the pulling wire 80 runs out of space is avoided.

Preferably, in the present embodiment, each tray body 53 is provided with two pull wires 80, correspondingly, each tray body 53 is provided with two third threaded holes 535 and two fifth threaded holes 534, each third threaded hole is provided with one third threaded member 57, and the two pull wires 80 are connected to the two third threaded members 57 in a one-to-one correspondence manner, so that the four-way bending control of the insertion tube 20 is realized through the four pull wires 80.

Referring to fig. 22 and 23, in another embodiment, two fifth threading holes 534 are communicated with each other, and a plurality of third threaded holes 535 are arranged at intervals on the tray body 53 along the track of the fifth threading holes 534, so that when the pull string 80 is straightened away from the insertion tube 20, different parts of the pull string 80 can be pressed by threading the third threaded members 57 into the different third threaded holes 535.

Further, the handle bending control mechanism of the embodiment shown in fig. 18 does not need to form a hole on the third screw 57, and can adjust the tightness of the pull wire 80 by using a standard screw, such as a standard bolt, etc., so that the process is simpler and the cost is lower.

It should be noted that in some embodiments, when two or more pull lines 80 are attached to the wheel, the different pull lines 80 may be secured to the wheel differently. Specifically, different pull wires 80 may be combined by selecting the fixing modes of the different embodiments. For example, one of the two pull wires 80 is position-adjustably connected to the wheel disc by the first screw 55, and the other is position-adjustably connected to the wheel disc by the second screw 56; or one of the two pull wires 80 is position-adjustably connected to the wheel disc by the first screw 55 and the other is position-adjustably connected to the wheel disc by the third screw 57; or one of the two pull wires 80 is position-adjustably connected to the wheel disc by the second screw 57, and the other is position-adjustably connected to the wheel disc by the third screw 57, etc.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A handle accuse curved mechanism which characterized in that includes:

the fixed shaft is used for being installed on the handle body;

the wheel disc is rotatably sleeved on the fixed shaft; and the number of the first and second groups,

the pull wire is arranged at one end of the pull wire in a position-adjustable mode and the other end of the pull wire is used for being connected with the far end of the insertion tube, so that when the wheel disc rotates around the fixed shaft, the pull wire pulls the far end of the insertion tube to be bent.

2. The handle bending control mechanism according to claim 1, further comprising a first threaded member, wherein the wheel disc is provided with a first threaded hole extending along the length direction of the pull wire and penetrating through the wheel disc, the first threaded member is in threaded engagement with the first threaded hole, and one end of the pull wire is inserted into the first threaded hole and connected with the first threaded member.

3. The handle bending control mechanism according to claim 2, wherein the first threaded member is provided with a first threading hole and a second threading hole which are communicated with each other along an axial direction, the aperture of the first threading hole is larger than that of the second threading hole, the pull wire is arranged in the second threading hole in a penetrating manner, one end of the pull wire is provided with a first limiting portion, the first limiting portion is arranged in the first threading hole, and the diameter of the first limiting portion is larger than that of the second threading hole.

4. The handle bending control mechanism according to claim 1, wherein the handle bending control mechanism comprises a second threaded piece, the wheel disc is provided with a second threaded hole forming an included angle with the length direction of the pull wire, the second threaded piece is in threaded fit with the second threaded hole, one end of the pull wire is connected with the second threaded piece, and the second threaded piece is used for furling the pull wire so that the pull wire is tightened in a direction away from the insertion pipe.

5. The handle bending control mechanism according to claim 4, wherein the second threaded member is provided with a third threading hole and a fourth threading hole which are communicated with each other and penetrate through the second threaded member along the radial direction, the aperture of the third threading hole is larger than that of the fourth threading hole, the pull wire is arranged in the fourth threading hole in a penetrating manner, one end of the pull wire is provided with a second limiting part, the second limiting part is positioned in the third threading hole, and the diameter of the second limiting part is larger than that of the fourth threading hole.

6. The handle bending control mechanism according to claim 1, further comprising a third threaded member, wherein a third threaded hole and a fifth threading hole are formed in the wheel disc, the fifth threading hole extends along the length direction of the pull wire and penetrates through the wheel disc, the pull wire is arranged in the fifth threading hole in a penetrating manner, the third threaded hole is communicated with the fifth threading hole and is arranged at an included angle, the third threaded member is in threaded fit with the third threaded hole, and the third threaded member is used for crimping the pull wire in the fifth threading hole or loosening the pull wire.

7. The handle bending control mechanism according to any one of claims 1 to 6, wherein at least two of the wheel discs are provided, all the wheel discs are sequentially sleeved on the fixed shaft, and each wheel disc is connected with at least one pull wire.

8. The handle bending control mechanism according to any one of claims 1 to 6, further comprising a knob rotatably sleeved on the fixed shaft and connected to the wheel disc, wherein the knob is used for driving the wheel disc to rotate.

9. An endoscope handle, characterized in that it comprises a handle bending control mechanism according to any of claims 1-8, and a handle body.

10. An endoscopic system comprising the endoscope handle of claim 9 and an insertion tube having a proximal end connected to the endoscope handle.

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