CN219070214U - Endoscope with a lens - Google Patents

Abstract

The utility model discloses an endoscope, which comprises a shell, an insertion tube, a driving assembly, a traction group and a locking assembly, wherein the shell forms a containing cavity; the insertion tube comprises a movable tube section capable of being laterally bent; the driving assembly comprises a rotating wheel and an operating piece, and the operating piece drives the rotating wheel to rotate; the traction group comprises two traction pieces, one ends of the two traction pieces are connected with different side walls of the movable pipe section, and the other ends of the two traction pieces are wound on the rotating wheel along opposite winding directions; the locking assembly comprises a rotating part and a driving part, the rotating part comprises a driving section and an interference section, the interference section is provided with a rotating stroke which is close to the rotating wheel to a first limit position and far away from the rotating wheel to a second limit position, and when the interference section moves to the first limit position, the operating part can drive the rotating wheel to rotate. The utility model can realize the locking of the bending angle of the movable pipe section after rough adjustment, can also finely adjust the bending angle of the movable pipe section, does not need to repeatedly lock and release the locking assembly, and does not influence the structural reliability of other components in the endoscope.

Description

Endoscope with a lens

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an endoscope.

Background

Existing endoscopes are commonly used for insertion into the human body for viewing, examination and treatment. Wherein, flexible endoscope front end can adjust the bending in order to observe different directions, in order to make things convenient for the doctor to observe, when the endoscope head end is bent to certain angle, need carry out the locking through locking device to this angle. And after locking, the physician also needs to make further fine adjustments to the angle. In the conventional endoscope, after the target degree is locked by the locking device, if the degree needs to be further finely adjusted, the locking device needs to be released and then the angle adjustment operation is performed, so that the operation is inconvenient.

In addition, in order to increase the locking strength of the locking device to a required angle, the conventional endoscope can increase the locking force through structural improvement, especially when the endoscope adopts the locking device which is longitudinally locked up and down on a plane, if the locking force is too large, the risk of the upper cover and the lower cover being separated is easily caused, and the operation difficulty of releasing the locking device is increased; on the contrary, if the locking force is too small, the problem of locking is not tight, so that friction force is increased by adding the rubber pad, but the rubber pad has the risk of failure.

Disclosure of Invention

The utility model mainly aims to provide an endoscope, which aims to solve the problems that the locking device is required to be repeatedly locked and released in the angle adjusting process of the traditional endoscope, and the structural reliability of a product is reduced.

To achieve the above object, the present utility model provides an endoscope comprising:

a housing formed with a receiving chamber;

the insertion pipe is communicated with one end of the shell and comprises a movable pipe section capable of being driven by external force to bend downwards;

the driving assembly comprises a rotating wheel rotatably arranged in the accommodating cavity and an operating piece positioned outside the shell, and the operating piece is connected with the rotating wheel so as to drive the rotating wheel to rotate under the driving of an external force;

the traction group comprises at least two traction pieces, one ends of the two traction pieces penetrate through the insertion pipe and are connected with different side walls of the movable pipe section, the other ends of the two traction pieces are contained in the containing cavity and are wound on the rotating wheel along opposite winding directions, so that when the rotating wheel rotates towards one winding direction, the traction pieces on the corresponding side are driven to take up, and the movable pipe section is driven to bend towards the corresponding side; the method comprises the steps of,

the locking assembly comprises a rotating part and a driving part, wherein the rotating part comprises a driving section and an interference section which are oppositely arranged, the rotating part is rotatably arranged in the accommodating cavity, the interference section is provided with a rotating stroke which is close to the rotating wheel to a first limit position and far away from the rotating wheel to a second limit position, the interference section is in interference with the rotating wheel when being in butt joint with the rotating wheel, the operating part can drive the rotating wheel to rotate under the driving of another larger external force when moving to the first limit position, and the driving part is connected with the driving section so as to drive the interference section to perform the rotating stroke under the driving of the external force.

Optionally, the driving piece including rotate install in hold the intracavity the action wheel, and with action bars that the action wheel is connected, the action wheel with the drive section is connected, in its rotation in-process, through the drive section drives the interference section carries out the rotation stroke, the one end of action bars stretches out to outside the casing, in order to drive under external force drive the action wheel.

Optionally, the driving wheel is a cam, and in the rotating process, a wheel surface of the driving wheel is kept in abutting connection with the driving section.

Optionally, an avoidance groove is formed on the side wall of the shell in an inward sinking manner, the avoidance groove is located on one side of the accommodating cavity and is communicated with the accommodating cavity through a mounting hole, a protruding shaft is protruding on the end face of the driving wheel, and the protruding shaft penetrates through the mounting hole and stretches into the avoidance groove;

the lever section of the operating lever contained in the avoidance groove is provided with a connecting hole connected with the protruding shaft.

Optionally, the end face of the interference section is arranged in a cambered surface shape matched with the wheel face of the rotating wheel at the position.

Optionally, the interference section is staggered with the traction member; and/or the number of the groups of groups,

the shell comprises two shell plates which are detachably connected, and the connection direction of the two shell plates is different from the rotation direction of the rotating piece.

Optionally, an annular winding groove is formed in the periphery of the rotating wheel, the winding groove is used for winding the traction piece, two clamping holes communicated with the winding groove are formed in the end face of the rotating wheel, and a convex column is formed in the middle of one end of the rotating wheel in a protruding mode;

the driving assembly further comprises two fixing pins which are inserted and connected to the two clamping holes in a one-to-one correspondence manner, and the fixing pins are fixedly connected with the end parts of the corresponding traction pieces in the winding grooves;

the operating piece is a hand wheel, and the hand wheel is in anti-rotation connection fit with the convex column.

Optionally, two traction groups are provided, two driving assemblies are provided corresponding to two traction pieces, two rotating wheels in the two driving assemblies are coaxially rotated, through holes are correspondingly formed in the convex columns of one rotating wheel and the hand wheels, and the convex columns of the other rotating wheel penetrate through the through holes and then are connected with the corresponding hand wheels.

Optionally, the clamping holes are formed in the end faces, close to each other, of the two rotating wheels;

the endoscope further comprises a separation plate, wherein the separation plate is arranged between the two rotating wheels, and the orifice of each clamping hole is covered to limit the fixing pin to be separated from the clamping hole.

Optionally, each traction piece in the two traction groups is connected to different side walls of the movable pipe section in the circumferential direction, and the hand wheels of the two driving assemblies are arranged differently.

According to the technical scheme provided by the utility model, a user can apply a first external force to the operation part to control the rotation of the rotating wheel, so that coarse adjustment of the bending angle of the movable pipe section is realized. The larger the rotation stroke of the rotating piece is, the larger the pushing force between the driving interference section and the wheel surface of the rotating wheel is, namely the larger the interference quantity is, the stronger the rotation stopping effect of the rotating wheel is, namely the angle locking strength of the movable pipe section is; on the contrary, the smaller the rotation stroke of the rotating piece is, the smaller the propping force between the driving interference section and the wheel surface of the rotating wheel is, namely, the smaller the interference amount is, the weaker the rotation stopping effect of the rotating wheel is, namely, the weaker the angle locking strength of the movable pipe section is. Therefore, when the user rotates the rotary piece from the second limit position to the first limit position through the driving piece, a certain locking effect can be generated on the bending angle of the movable pipe section after rough adjustment. And because the interference section in this application is even in first extreme position, namely when exerting relatively great interference volume to the runner, still accessible is exerted the second external force that is greater than first external force to the operating element, realizes the continuation rotation of runner to the final realization user carries out further fine tuning to the bending angle of movable pipe section. Compared with the prior art, the device and the method do not need to repeatedly lock and release the locking assembly, do not interfere other components such as the endoscope inner shell, and cannot influence the structural reliability of the other components in the endoscope.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an endoscope according to an embodiment of the present utility model at a first viewing angle;

FIG. 2 is a schematic perspective view of the endoscope of FIG. 1 at a second view angle;

FIG. 3 is a schematic view of an assembly of the traction group, drive assembly, and locking assembly of FIG. 1;

FIG. 4 is an exploded view of a portion of the structure of FIG. 3;

FIG. 5 is a schematic diagram illustrating the assembly of the driving wheel and the rotating member in FIG. 3;

fig. 6 is a schematic diagram illustrating the assembly of the driving member and the housing in fig. 1.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Endoscope with a lens	360	Clamping hole
100	Shell body	370	Convex column
				110	Shell plate	371	Through hole
111	Accommodating chamber	400	Traction group
				112	Avoidance groove	410	Traction piece
113	Mounting hole	500	Locking assembly
				200	Insertion tube	510	Rotary member
210	Movable pipe section	511	Drive section
				220	Fixed pipe section	512	Interference section
230	Head end structure	520	Driving piece
				300	Driving assembly	521	Driving wheel
310	First rotating wheel	522	Operating lever
				320	Second rotating wheel	523	Protruding shaft
330	First hand wheel	524	Connecting hole
				340	Second hand wheel	600	Fixing pin
350	Wire winding groove	700	Partition plate

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1, 2 and 6, an endoscope 1 according to the present utility model includes a housing 100, an insertion tube 200, a driving assembly 300, a pulling assembly 400 and a locking assembly 500. Wherein the housing 100 is formed with a receiving chamber 111; the insertion tube 200 is disposed at one end of the housing 100 in a communicating manner, and the insertion tube 200 includes a movable tube section 210 capable of being bent under the driving of an external force; the driving assembly 300 includes a rotating wheel rotatably installed in the accommodating cavity 111, and an operating member located outside the housing 100, and the operating member is connected to the rotating wheel to drive the rotating wheel to rotate under the driving of an external force; the traction assembly 400 includes at least two traction members 410, one ends of the two traction members 410 are inserted into the insertion tube 200 and connected to different side walls of the movable tube section 210, and the other ends are accommodated in the accommodating cavity 111 and wound on the rotating wheel along opposite winding directions, so as to drive the traction members 410 on the corresponding sides to take up wires and drive the movable tube section 210 to bend towards the corresponding sides when the rotating wheel rotates towards one winding direction; the locking assembly 500 includes a rotating member 510 and a driving member 520, the rotating member 510 includes a driving section 511 and an interference section 512 which are disposed opposite to each other, the rotating member 510 is rotatably mounted in the accommodating cavity 111, so that the interference section 512 has a rotation stroke from the rotating wheel to a first limit position and away from the rotating wheel to a second limit position, the interference section 512 interferes with the rotating wheel when rotating to abut against the rotating wheel, and when moving to the first limit position, the operating member can drive the rotating wheel to rotate under another larger external force, and the driving member 520 is connected with the driving section 511 to drive the interference section 512 to perform the rotation stroke under the external force.

In the technical scheme provided by the utility model, a user can apply a first external force to the operation piece to control the rotation of the rotating wheel, so that the coarse adjustment of the bending angle of the movable pipe section 210 is realized. The larger the rotation stroke of the rotating member 510 is, the larger the pushing force between the driving interference section 512 and the wheel surface of the rotating wheel is, that is, the larger the interference amount is, the stronger the rotation stopping effect on the rotating wheel, that is, the angle locking strength of the movable pipe section 210 is; conversely, the smaller the rotation stroke of the rotating member 510, the smaller the pushing force between the interference section 512 and the wheel surface of the rotating wheel, i.e. the smaller the interference amount, the weaker the rotation stopping effect on the rotating wheel, i.e. the angle locking strength of the movable pipe section 210. Therefore, when the user rotates the rotating member 510 from the second limit position to the first limit position through the driving member 520, a certain locking effect can be generated on the bending angle of the movable pipe section 210 after rough adjustment. However, since the interference section 512 in the present application is at the first limit position, that is, when a relatively large amount of interference is applied to the rotating wheel, the rotating wheel can still be continuously rotated by applying a second external force larger than the first external force to the operating member, and finally, the bending angle of the movable pipe section 210 can be further finely adjusted by the user. Compared with the prior art, the present application does not need to repeatedly lock and release the locking assembly 500, and does not interfere with other components such as the housing 100 in the endoscope 1, i.e. the structural reliability of the other components in the endoscope 1 is not affected.

The housing 100 defines a receiving cavity 111 for receiving and protecting at least a portion of the drive assembly 300, the traction assembly 400, the locking assembly 500, and the like. In order to facilitate the disassembly and replacement of the components and also to facilitate the machining and shaping of the housing 100 and the accommodating chamber 111, etc., in an embodiment, the housing 100 generally includes at least two shells 110, and the two shells 110 are detachably connected by a detachable connection structure. The two shell plates 110 may be sequentially arranged along any dimension direction of the shell 100, for example, a length direction, a width direction, a thickness direction, a diagonal direction, and the like. The detachable connecting structure can be in threaded connection and matching of the threaded connecting piece and the threaded hole, magnetic attraction and matching of the magnetic attraction piece and the magnetic matching piece, buckling and holding and matching of the buckling piece and the buckling groove, and the like.

Specifically, the housing 100 includes two shells 110 sequentially arranged along a thickness direction thereof, each shell 110 is arranged in a concave manner, and the concave arrangements of the two shells 110 jointly enclose a receiving chamber 111. The accommodating chamber 111 may be directly embodied as a whole chamber structure, or may be embodied as a chamber structure formed by respectively communicating a plurality of chamber sections.

The insertion tube 200 is in a hollow tube structure, and its radial cross-sectional shape may be set to, for example, a circular shape, an elliptical shape, a quasi-circular shape, a polygonal shape, or a suitable special shape, etc., according to practical needs. One end of the insertion tube 200 is fixed to one end of the housing 100 by a structure such as a rotary sleeve, and a hollow portion thereof communicates with the accommodating chamber 111. The stinger 200 includes a fixed tubular segment 220, a movable tubular segment 210, and a head end structure 230 in communication. The headend structure 230 generally integrates detection sensing devices, such as illumination devices, imaging devices, etc., required for surgery, among other things. The movable tube section 210 may be disposed at one end of the fixed tube section 220 or may be formed at any location intermediate the fixed tube section 220, but in order to facilitate adjustment of the orientation of the head end structure 230 by lateral bending of the movable tube section 210, the movable tube section 210 is generally disposed proximate to the head end structure 230. Specifically, for example, the fixed pipe section 220, the movable pipe section 210, and the head end structure 230 are disposed in communication in this order in a direction away from the housing 100.

The rotating wheel is a disk-like or wheel-like structure that can rotate relative to the housing 100. In this embodiment, the wheel is rotatably mounted in the receiving chamber 111 by, for example, a rotary shaft. The axial direction of the rotation shaft may extend in any dimension direction of the accommodation chamber 111, and specifically, as shown in fig. 1 to 3, for example, the axial direction of the rotation shaft extends in the thickness direction of the housing 100.

The portion of the operating member extending into the accommodating chamber 111 is connected to the rotating wheel, specifically, may be connected to any end surface or wheel surface of the rotating wheel, or may be connected to the rotating shaft. The portion of the operating member extending out of the housing 100 is available for a user to hold, so that the user can conveniently control the rotation stroke amount of the rotating wheel through the operating member, and then coarse adjustment and fine adjustment on the rotation stroke amount of the rotating wheel are achieved. Based on this, according to the connection part of the operation member and the rotating wheel and the movement mode of the operation member, different types of operation members can be selected, for example, in this embodiment, when the operation member is connected with the rotating shaft and drives the rotating wheel to rotate in the same direction through self rotation, the operation member can be specifically set as a hand wheel structure.

The traction assembly 400 includes at least two traction members 410, i.e., members that act as traction, such as traction ropes, traction wires, flexible traction rods, and the like. The traction element 410 has a first end and a second end which are opposite to each other along the length direction, wherein the first end of the traction element 410 is fixed on the rotating wheel, and the second end of the traction element 410 passes through the accommodating cavity 111 and the fixed pipe section 220 in sequence and is fixedly connected with the side wall of the movable pipe section 210. The first ends of the two traction members 410 are wound on the rotating wheel along different winding directions, such as a forward rotating direction and a reverse rotating direction of the rotating wheel; the second ends of the two traction members 410 are distributed on opposite sides of the movable pipe section 210 in the same radial direction, so that when the rotating wheel rotates in a winding direction, for example, rotates forward, the corresponding traction members 410 tighten to drive the movable pipe section 210 to bend towards the corresponding side; when the wheel rotates in the other winding direction, such as reversing, the corresponding traction element 410 tightens, causing the movable tube segment 210 to bend toward the corresponding side.

Thus, the user can finally realize rough adjustment and fine adjustment of the bending angle of the movable pipe section 210 by controlling the operation member.

The rotary member 510 includes an interference section 512, a driving section 511, and a rotary portion connecting the interference section 512 and the driving section 511, the rotary portion being rotatably mounted to the housing 100 by a shaft, for example. In order to realize that the driving interference section 512 has a rotation stroke approaching and moving away from the rotating wheel during the rotation of the rotating member 510, in an embodiment, the rotating member 510 is disposed beside the rotating wheel, and the rotation axis of the rotating member 510 extends in the same direction as the rotation axis of the rotating wheel, i.e. the shaft body is disposed to extend in the thickness direction of the housing 100. When the interference section 512 rotates in a direction approaching the rotating wheel, the distance between the wall surface of the interference section 512 and the wheel surface at the corresponding position of the rotating wheel is gradually reduced, the mutual interference degree between the wall surface of the interference section 512 and the wheel surface is gradually increased, and the locking strength of the rotating member 510 to the rotating wheel is gradually enhanced.

For ease of understanding, if the position of the interference section 512 is defined as a first limit position when it is fully proximate to the wheel face of the wheel, the position of the interference section 512 is defined as a second limit position when it is fully spaced from the wheel face of the wheel. Then, during the rotation of the wheel from the second limit position towards the first limit position, the interference section 512 only abuts against the wheel surface of the wheel, and a certain degree of interference is generated between the interference section and the wheel surface, i.e. the locking assembly 500 exerts a certain locking action on the wheel. In this way, after the user initially determines the rough adjustment angle of the movable pipe segment 210 through the operation member, when the interference section 512 does not reach the first limit position, the user may also fine-adjust the side bending angle of the movable pipe segment 210 through the operation member, so as to obtain a final fine adjustment angle. Alternatively, after the interference section 512 reaches the first limit position, the user increases the force applied to the operating member, so as to fine tune the side bending angle of the movable pipe section 210, and obtain a final fine tuning angle. The locking and releasing operations of the locking assembly 500 need not be repeated.

In various embodiments of the locking assembly 500, referring to fig. 3 to 5, in particular, in one embodiment, the driving member 520 includes a driving wheel 521 rotatably mounted in the accommodating cavity 111, and an operating rod 522 connected to the driving wheel 521, where the driving wheel 521 is connected to the driving section 511, so that during rotation of the driving wheel 521, the driving section 511 drives the interference section 512 to perform the rotation stroke, and one end of the operating rod 522 extends out of the housing 100 to drive the driving wheel 521 under the driving of an external force. It can be understood that the user can drive the driving wheel 521 to rotate by controlling the operation lever 522 to move, and then drive the interference section 512 to perform a rotation stroke through the driving section 511 during the rotation of the driving wheel 521.

In one embodiment, the housing 100 includes two detachably connected shells 110, and the connection direction of the two shells 110 is different from the rotation direction of the rotating member 510. In this way, the direction of the acting force applied by the driving wheel 521 to the driving section 511 and the interference section 512 to the rotating wheel is not in the same direction as the connecting direction between the two shell plates 110, so that the acting force is not excessively large, and the two shell plates 110 are not separated, thereby facilitating the stability of the structure of the housing 100.

Specifically, in an embodiment, the driving member 520 may be a crank-slider mechanism, that is, the driving member 520 may further include a rocker and a slider, wherein one end of the rocker is rotatably connected to one side of the driving wheel 521, and the other end of the rocker is rotatably connected to the slider, and slides, for example, through a sliding slot to reciprocate with a sliding rail, and during the sliding process, the interference section 512 is always connected.

Alternatively, the driving wheel 521 may be eccentrically rotatably disposed. Referring to fig. 3 to 5, in this embodiment, the driving wheel 521 is a cam, and during rotation, the tread of the driving wheel 521 is kept in contact with the driving section 511. It will be appreciated that the cam has a proximal tread nearer its axis of rotation and a distal tread farther from its axis of rotation. Because the cam always has the tread in contact with the driving section 511 in the rotation process, any angle rotation motion of the cam can be transmitted to the driving section 511, and then the continuity and smoothness of the interference section 512 in the rotation stroke are ensured. When the proximal tread rotates to abut against the driving section 511, the interference section 512 moves to the second limit position; conversely, when the distal tread rotates to the abutment of the drive segment 511, the interference segment 512 moves to the first limit position. Thus, by controlling the rotation angle of the cam, the magnitude of the interference generated between the interference section 512 and the rotating wheel, that is, the magnitude of the locking force, can be correspondingly adjusted, which is convenient for the user to further fine-tune the side bending angle of the movable pipe section 210.

Based on the above, referring to fig. 6, in an embodiment, an avoidance groove 112 is formed on the side wall of the housing 100, the avoidance groove 112 is located at one side of the accommodating cavity 111 and is communicated with the accommodating cavity 111 through a mounting hole 113, a protruding shaft 523 is protruding on the end surface of the driving wheel 521, and the protruding shaft 523 passes through the mounting hole 113 and extends into the avoidance groove 112; the lever section of the operation lever 522 accommodated in the escape groove 112 is provided with a connection hole 524 connected to the male shaft 523. The groove width of the escape groove 112 may be set to be not smaller than the thickness of the operation lever 522, facilitating the movement of the operation lever 522 within the escape groove 112. The setting of dodging the groove 112 can carry out spacingly to the action bars 522, especially when the casing 100 includes two shells 110 that carry out detachable connection along its thickness direction, dodges the groove 112 and form on one of them shells 110, when two shells 110 equipment is accomplished the back, can accomplish the equipment between action wheel 521 and the action bars 522.

In practical application, the avoidance groove 112 may be configured in a fan shape with the groove bottom as the center and the groove depth as the radius, so that the extending direction of the groove walls at two sides of the avoidance groove 112 is basically consistent with the extending direction of the operation rod 522 in the rotating process. The positions of the two side groove walls of the avoidance groove 112, that is, the two limit positions of the operation lever 522 during the rotation process, that is, the first limit position and the second limit position corresponding to the rotation member 510. Therefore, when the user manually controls the operation lever 522 to the side wall of the groove near the avoiding groove 112, the rotating member 510 is correspondingly driven to the first limit position, and at this time, by increasing the rotation force applied to the operation member, the rotation of the rotating wheel within a certain angle range can still be achieved, that is, the fine adjustment of the movable pipe section 210 within a certain side bending angle range can be achieved.

The male shaft 523 is engaged with the connection hole 524 in a rotation-stopping manner. Specifically, one of the male shaft 523 and the connection hole 524 is provided with a rotation stopping protrusion, and the other one is provided with a rotation stopping groove, and the rotation stopping protrusion is in concave-convex fit connection with the rotation stopping groove. In an embodiment, at least one side of the shaft face of the reduction male shaft 523 is formed with a rotation stopping protrusion, and the rotation stopping protrusion is correspondingly protruded on the side hole wall of the connection hole 524; or the cross-sectional shape of the directly provided connection hole 524 is polygonal, and the cross-sectional shape of the male shaft 523 is polygonal adapted thereto.

Of course, the above-mentioned rotation-stopping fit scheme can be applied between the operating member and the rotating wheel as well, without limitation.

Furthermore, in an embodiment, the interference section 512 is substantially plate-shaped and has an abutment surface that abuts against the tread of the wheel, and the abutment surface is provided in a cambered surface shape that matches the tread of the wheel at the location. Thus, the contact area between the abutting surface and the wheel surface of the rotating wheel is increased, the stable release of the abutting surface and the wheel surface is facilitated, and the wheel surface of the rotating wheel can be prevented from being scratched by sharp structures such as edges and corners formed at the abutting surface.

Referring to fig. 3, in one embodiment, the interference section 512 is offset from the traction element 410. In this way, no direct contact is generated between the interference section 512 and the traction element 410, so that the interference section 512 only interferes with the rotating wheel, but does not interfere with the movement of the traction element 410 on the rotating wheel, and damage to the traction element 410 is avoided.

Based on any of the above embodiments, referring to fig. 3 to 5, an annular winding groove 350 is formed on the periphery of the rotating wheel, the winding groove 350 is used for winding the traction member 410, two clamping holes 360 connected to the winding groove 350 are formed on the end surface of the rotating wheel, and a protruding column 370 is formed in the middle of one end of the rotating wheel; the driving assembly 300 further comprises two fixing pins 600 inserted and connected to the two clamping holes 360 in a one-to-one correspondence manner, and the fixing pins 600 are fixedly connected to the ends of the corresponding traction members 410 in the winding grooves 350; the operating member is a hand wheel, and the hand wheel is in anti-rotation connection and matching with the convex column 370.

The rotating wheel is provided with an annular winding groove 350, and the two traction pieces 410 can enter the winding groove 350 from any position of the winding groove 350, wind out to the clamping hole 360 after a certain distance is wound in the winding groove 350, and are connected and fixed with the convex column 370. The fixing manner of the end of the traction element 410 by the convex column 370 is not limited, and the end of the traction element 410 may be pressed on the end surface of the rotating wheel, or a limiting hole may be formed through the convex column 370, the limiting hole may allow the traction element 410 to pass through, and the expansion process may be performed at the extending end of the traction element 410, or the caliber reduction process may be performed at the outlet of the limiting hole.

Further, in an embodiment, the traction assembly 400 is provided with two traction assemblies 400 and at least four traction members 410, wherein the second ends of the two traction members 410 in one traction assembly 400 are respectively arranged at two opposite sides of the movable pipe section 210 in one radial direction, and the second ends of the two traction members 410 in the other traction assembly 400 are respectively arranged at two opposite sides of the movable pipe section 210 in the other radial direction, so that the two traction assemblies 400 can traction the movable pipe section 210 in at least four directions, thereby realizing side bending of the movable pipe section 210 in four directions.

Next, two traction elements 410 are provided corresponding to the two driving assemblies 300, the rotating wheels in the two driving assemblies 300 are coaxially rotated, through holes 371 are correspondingly formed in the protruding columns 370 of one rotating wheel and the hand wheels, and the protruding columns 370 of the other rotating wheel are connected with the corresponding hand wheels after passing through the through holes 371.

For ease of understanding, two wheels are defined as a first wheel 310 and a second wheel 320, respectively, and correspondingly, a first hand wheel 330 and a second hand wheel 340, respectively. The shell plate 110 is provided with a via hole for the protruding column 370 to pass through and/or the hand wheel to pass through. At this time, the first hand wheel 330 and the second hand wheel 340 are sequentially arranged in a direction close to the through hole, and after the convex column 370 of the second rotating wheel 320 penetrates the through hole and/or the second hand wheel 340 penetrates the through hole, the two are connected; the protruding columns 370 of the second rotating wheel 320 and the second rotating wheel 340 are correspondingly provided with through holes 371, and after the protruding columns 370 of the first rotating wheel 310 penetrate through the through holes 371 and/or the first rotating wheel 330 penetrates through the through holes 371, the protruding columns and the second rotating wheel are connected, so that the first rotating wheel 310, the second rotating wheel 320, the first rotating wheel 330 and the second rotating wheel 340 are basically coaxially arranged, and the structure is compact.

Further, in an embodiment, the end surfaces of the two rotating wheels, which are close to each other, are provided with the clamping holes 360; the endoscope 1 further includes a separation plate 700, where the separation plate 700 is disposed between the two rotating wheels, and covers the aperture of each of the fastening holes 360, so as to limit the fixing pin 600 from being separated from the fastening hole 360. The separation plate 700 may separate the first rotating wheel 310 from the second rotating wheel 320, and each fixing pin 600 may be limited by the separation plate 700, which helps to enhance the fixing effect on the traction member 410.

Next, when the rotary member 510 is provided in a plate shape as described above, in order to increase the interference abutment surface with the wheel, the interference section 512 of the rotary member 510 may extend in the thickness direction of the wheel to cover the entire wheel surface of the first wheel 310 and the wheel surface of the second wheel 320. Because the partition plate 700 can be fixed relative to the housing 100 and does not rotate along with the first rotating wheel 310 or the second rotating wheel 320, the position of the interference section 512 corresponding to the partition plate 700 can be hollowed out, so that the arrangement of the partition plate 700 does not affect the rotation of the first rotating wheel 310 and the second rotating wheel 320, and the interference abutting between the interference section 512 and the wheel surfaces of the first rotating wheel 310 and the second rotating wheel 320 is not affected.

Furthermore, in one embodiment, each of the traction members 410 of the two traction assemblies 400 is connected to a different sidewall of the movable pipe section 210 in the circumferential direction, and the handwheels of the two driving assemblies 300 are disposed differently. By setting the first hand wheel 330 and the second hand wheel 340 differently, for example, setting the hand wheel structures of different shapes, different materials and different sizes, the first hand wheel 330 and the second hand wheel 340 can be distinguished, thereby avoiding misoperation of the user.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. An endoscope, comprising:

a housing formed with a receiving chamber;

the insertion pipe is communicated with one end of the shell and comprises a movable pipe section capable of being driven by external force to bend downwards;

the driving assembly comprises a rotating wheel rotatably arranged in the accommodating cavity and an operating piece positioned outside the shell, and the operating piece is connected with the rotating wheel so as to drive the rotating wheel to rotate under the driving of an external force;

the traction assembly comprises at least two traction pieces, one ends of the two traction pieces penetrate through the insertion pipe and are connected with different side walls of the movable pipe section, the other ends of the two traction pieces are contained in the containing cavity and are wound on the rotating wheel along opposite winding directions, so that when the rotating wheel rotates towards one winding direction, the traction pieces on the corresponding side are driven to take up, and the movable pipe section is driven to bend towards the corresponding side; the method comprises the steps of,

the locking assembly comprises a rotating part and a driving part, wherein the rotating part comprises a driving section and an interference section which are oppositely arranged, the rotating part is rotatably arranged in the accommodating cavity, the interference section is provided with a rotating stroke which is close to the rotating wheel to a first limit position and far away from the rotating wheel to a second limit position, the interference section is in interference with the rotating wheel when being in butt joint with the rotating wheel, the operating part can drive the rotating wheel to rotate under the driving of another larger external force when moving to the first limit position, and the driving part is connected with the driving section so as to drive the interference section to perform the rotating stroke under the driving of the external force.

2. The endoscope of claim 1, wherein the driving member comprises a driving wheel rotatably installed in the accommodating cavity, and an operating rod connected with the driving wheel, the driving wheel is connected with the driving section so as to drive the interference section to perform the rotation stroke through the driving section in the rotation process, and one end of the operating rod extends out of the shell so as to drive the driving wheel under the drive of an external force.

3. The endoscope of claim 2, wherein the drive wheel is a cam, and wherein a tread of the drive wheel is held in abutment with the drive section during rotation.

4. The endoscope as defined in claim 3, wherein an avoidance groove is formed in the side wall of the shell in an inward manner, the avoidance groove is located at one side of the accommodating cavity and is communicated with the accommodating cavity through a mounting hole, a protruding shaft is protruding from the end face of the driving wheel, and the protruding shaft penetrates through the mounting hole and extends into the avoidance groove;

the lever section of the operating lever contained in the avoidance groove is provided with a connecting hole connected with the protruding shaft.

5. An endoscope as in claim 1 wherein the end face of the interference section is provided in a cambered surface shape that is adapted to the wheel face of the wheel at the location.

6. The endoscope of claim 1, wherein the interference section is offset from the retractor; and/or the number of the groups of groups,

the shell comprises two shell plates which are detachably connected, and the connection direction of the two shell plates is different from the rotation direction of the rotating piece.

7. The endoscope as defined in any one of claims 1 to 6, wherein an annular winding groove is formed in the periphery of the rotating wheel, the winding groove is used for winding the traction piece, two clamping holes communicated with the winding groove are formed in the end face of the rotating wheel, and a convex column is formed in the middle of one end of the rotating wheel in a protruding mode;

the driving assembly further comprises two fixing pins which are inserted and connected to the two clamping holes in a one-to-one correspondence manner, and the fixing pins are fixedly connected with the end parts of the corresponding traction pieces in the winding grooves;

the operating piece is a hand wheel, and the hand wheel is in anti-rotation connection fit with the convex column.

8. The endoscope of claim 7, wherein the number of the traction groups is two, the number of the driving components is two corresponding to the number of the traction pieces, the rotating wheels in the two driving components are coaxially arranged in a rotating way, through holes are correspondingly formed in the convex columns of one rotating wheel and the hand wheels, and the convex columns of the other rotating wheel are connected with the corresponding hand wheels after penetrating through the through holes.

9. The endoscope as defined in claim 8, wherein said clip holes are provided on end surfaces of said two rotating wheels which are adjacent to each other;

the endoscope further comprises a separation plate, wherein the separation plate is arranged between the two rotating wheels, and the orifice of each clamping hole is covered to limit the fixing pin to be separated from the clamping hole.

10. The endoscope of claim 8, wherein each of said traction members of both said traction groups is connected to a circumferentially different sidewall of said movable tube section, said handwheels of both said drive assemblies being disposed differently.

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