CN219557230U - Rocker bending control mechanism, operation part for endoscope and endoscope - Google Patents

Abstract

The utility model provides a rocker bending control mechanism, an endoscopic operation part and an endoscope, which can solve the problem that the distal direction of an insertion part is difficult to be conveniently and accurately regulated in the prior art. The rocker accuse mechanism of bending includes: the limiting support piece is used for being fixedly arranged on the operating part shell of the endoscope; the rocker control bending piece is used for being movably arranged on the operating part shell; the rocker bending control piece comprises a rocker part and a bending control part, wherein the bending control part is used for being fixedly connected with a plurality of traction wires of the endoscope in a staggered manner; the bending control part can be sleeved on the limiting support piece in a fixed-point rotating manner, and is fixedly connected with the rocker part so as to perform rotary swinging motion relative to the limiting support piece under the drive of the rocker part, and the bending control part is used for pulling the traction wire to control the bending of the insertion part of the endoscope.

Description

Rocker bending control mechanism, operation part for endoscope and endoscope

Technical Field

The utility model relates to the technical field of endoscopes, in particular to a rocker bending control mechanism, an operation part for endoscope and an endoscope.

Background

In recent years, with the development of the minimally invasive endoscopic diagnosis and treatment technology, many diseases can enter the human body through natural tunnels of the human body or incisions formed by operations, and minimally invasive diagnosis and treatment can be performed. At present, the use of an endoscope is gradually accepted by the market, for example, in the endoscopic retrograde cholangiopancreatography, pathological changes and calculus conditions in biliary tract can be observed through a camera of the endoscope, so that the accuracy of biliary tract disease treatment is greatly improved, and the incidence rate of complications is reduced.

In clinical use of an endoscope, an insertion portion of the endoscope is usually inserted into a body cavity along a portion having a curved shape such as an esophagus or a large intestine, and an operator needs to bend a bending portion located at a distal end of the insertion portion in different directions (i.e., adjust and control a distal end direction of the insertion portion) by a bending control mechanism in the process, so that an optical system located at a distal end of the insertion portion obtains an image of a desired observation portion, so that the operator can observe, diagnose, photograph, treat, or the like according to the image.

At present, the existing bending control mechanism generally drives two steering wheels to rotate in a one-to-one correspondence manner through two knobs, and then drives four traction wires to drag the bending part at the far end of the insertion part through the two steering wheels so as to realize the regulation and control of the far end orientation of the insertion part. However, since each knob in the existing bending control mechanism can only drive one steering wheel to rotate, and then the bending part at the distal end of the insertion part is pulled by two traction wires to bend in one direction, an operator needs to precisely operate the two knobs to mutually cooperate to enable the distal end of the insertion part to face a required angle, which brings great difficulty and challenges to the operation of the operator, and the distal end of the insertion part cannot be rapidly and precisely regulated.

Disclosure of Invention

The utility model aims to provide a rocker bending control mechanism for an endoscope, which can solve the problem that the distal direction of an insertion part is difficult to be conveniently and accurately controlled in the prior art. In addition, the utility model also aims to provide an endoscope which can be used as an interventional instrument, has lower cost and is convenient to be used as a disposable endoscope.

In order to solve the above technical problems, an embodiment of the present utility model discloses a rocker bending control mechanism for an endoscope, which includes:

the limiting support piece is used for being fixedly arranged on the operating part shell of the endoscope; and

the rocker control bending piece is used for being movably arranged on the operating part shell; the rocker bending control piece comprises a rocker part and a bending control part, wherein the bending control part is used for being fixedly connected with a plurality of traction wires of the endoscope in a staggered manner; the bending control part can be sleeved on the limiting support piece in a fixed-point rotating manner, and is fixedly connected with the rocker part so as to perform rotary swinging motion relative to the limiting support piece under the drive of the rocker part, and the bending control part is used for pulling the traction wire to control the bending of the insertion part of the endoscope.

By adopting the technical scheme, when the insertion part is required to be operated to bend so that the distal end of the insertion part faces to a required angle, an operator can drive the bending control part to do rotary motion relative to the limiting support piece only by poking the rocker part relative to the operating part shell, and further drive different traction wires to control the insertion part to bend towards different directions, so that the distal end of the insertion part faces to different angles; in other words, an operator can accurately regulate the distal end direction of the insertion portion by only pulling the rocker portion with one hand, and does not need to operate the two knobs respectively as in the prior art, so that the operation difficulty is reduced, and the distal end direction of the insertion portion can be regulated and controlled rapidly and accurately.

According to one embodiment of the utility model, the limit support comprises a ball portion and a tail stem portion projecting outwardly from the ball portion, the tail stem portion being adapted to be secured to the operator housing to suspend the ball portion relative to the operator housing; the ball head part is matched with the sphere of the bending control part so as to enable the bending control part to rotate around the sphere center of the ball head part.

By adopting the technical scheme, the rocker control bending piece can conveniently rotate around the center of the ball head at fixed points when being stirred so as to do 360-degree rotation and swing motion relative to the operating part shell.

According to one embodiment of the utility model, the bending control part is provided with a ball cavity matched with the ball head part and a plurality of traction channels for accommodating traction wires in a one-to-one correspondence manner; the plurality of traction channels are distributed around the ball cavity at intervals, and the ball head part can be embedded into the ball cavity of the bending control part in a rolling way.

By adopting the technical scheme, when the rocker bending control piece is stirred to stably rotate around the sphere center of the sphere head, the bending control part can relax one part of the traction wires while pulling the other part of the traction wires, so that the distal end of the insertion part is controlled to steer.

According to one embodiment of the utility model, the opening diameter of the ball cavity is smaller than the outer diameter of the ball head; the inner diameter of the ball cavity is equal to the outer diameter of the ball head.

By adopting the technical scheme, the ball cavity can be prevented from being separated from the ball cavity, the inner wall surface of the ball cavity is tightly attached to the outer wall surface of the ball cavity, and the bending control part is prevented from loosening or shaking relative to the ball head, so that the bending is accurately controlled.

According to one embodiment of the utility model, the bending control part comprises a cylinder and a plurality of hollow ribs circumferentially arranged on the cylinder; the far end of the cylinder is axially recessed to form a ball cavity, and the near end of the cylinder is fixedly connected with the rocker part; each hollow rib extends axially on the outer peripheral surface of the cylinder to provide a pulling channel.

By adopting the technical scheme, the corresponding arrangement between the ball cavity and the traction channel is convenient to realize, the manufacturing difficulty of the rocker control bending piece is reduced, and the cost is reduced.

According to one embodiment of the present utility model, the plurality of hollow ribs are uniformly distributed on the outer circumferential surface of the cylinder.

By adopting the technical scheme, the insertion part is convenient to control to bend correspondingly in opposite directions, and the insertion part is further controlled to bend more flexibly in all directions.

According to one embodiment of the utility model, the hollow ribs are integrally formed protruding on the outer circumferential surface of the cylinder.

By adopting the technical scheme, the overall structural strength of the bending control part is enhanced and stones are durable while the interval between the traction channels is increased.

According to one embodiment of the utility model, the proximal end of the cylinder is axially recessed to form a clamping groove corresponding to the traction channel for clamping the proximal end of the traction wire.

By adopting the technical scheme, the rocker bending control mechanism can be conveniently and fixedly connected with the traction wire, so that the assembly cost of the endoscope is conveniently reduced.

According to one embodiment of the utility model, the cylinder is formed by assembling and fixedly connecting at least two parts.

By adopting the technical scheme, the ball head with larger outer diameter can be placed into the ball cavity with smaller opening, so that the rocker control bending piece can be better limited and supported through the limiting support piece, and the rocker control bending piece can stably rotate at fixed points.

According to one embodiment of the utility model, the rocker portion comprises a lever body for protruding from the proximal opening of the operating portion housing and a handle for outside the operating portion housing; the distal end of the rod body is fixedly connected with the bending control part, and the proximal end of the rod body is connected with the handle.

By adopting the technical scheme, the power arm of the rocker bending control mechanism can be far larger than the resistance arm of the rocker bending control mechanism, so that a labor-saving lever is formed, and an operator is helped to control the bending of the insertion part in a labor-saving manner. In addition, the poking direction of the rocker part in the rocker bending control mechanism can correspond to the bending direction of the insertion part, so that an operator can realize the corresponding bending of the insertion part only by poking the rocker part in the corresponding direction when using the rocker bending control mechanism, the operation difficulty is greatly reduced, and the operator can conveniently get up to the hand.

According to one embodiment of the utility model, the rocker portion further comprises a skirt panel, which is sleeved on the rod body for covering the proximal opening of the operating portion housing; the apron board is a plane annular plate or a cambered surface annular plate fixedly arranged on the rod body.

By adopting the technical scheme, the pull wire can be conveniently pulled out of the lock and prevented from being broken due to overlarge rotation angle of the bending control part by limiting the toggle angle of the rocker part and further limiting the rotation angle of the bending control part. In addition, the rotation of the rod body is guided by the annular outer periphery of the apron board, so that the rotation of the bending control part is smoother.

According to another aspect of the present utility model, there is further provided an operation portion for endoscopic use, comprising:

an operation section case; and

the rocker arm bending control mechanism is correspondingly arranged on the operating part shell.

By adopting the technical scheme, compared with the existing endoscope operation part, the operation part for the endoscope reduces the operation difficulty, so that an operator can easily operate the bending of the insertion part by hands.

According to another aspect of the present utility model, there is further provided an endoscope including:

an operation part for endoscope, wherein the operation part for endoscope comprises an operation part shell and any rocker bending control mechanism, and the rocker bending control mechanism is correspondingly arranged on the operation part shell;

an insertion portion, a proximal end of which is connected to the endoscopic operation portion; and

the traction wires extend to the distal end of the insertion part from the rocker bending control mechanism so as to control the distal end of the insertion part to turn by pulling the traction wires through the rocker bending control mechanism.

By adopting the technical scheme, the endoscope disclosed by the utility model can realize 360-degree bending operation of the insertion part more flexibly, and is convenient for controlling the distal end of the insertion part to face a required angle more accurately.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic perspective view of an endoscope provided in one embodiment of the present utility model;

FIG. 2 shows an exploded view of an endoscope according to the above-described embodiment of the present utility model;

FIG. 3 shows a schematic perspective view of a rocker control mechanism in an endoscope according to the above-described embodiment of the present utility model;

FIG. 4 shows an exploded schematic view of a rocker control mechanism according to the above-described embodiment of the present utility model;

FIG. 5 shows a schematic cross-sectional view of a rocker control bending mechanism according to the above-described embodiment of the present utility model;

FIG. 6 shows an enlarged schematic view of an endoscope with an upper housing removed according to the above-described embodiment of the present utility model;

fig. 7 is a schematic view showing a state of the endoscope before and after pulling according to the above embodiment of the present utility model.

Reference numerals: 1. a rocker control bending mechanism; 10. a limit support; 11. a ball head portion; 12. a tail rod portion; 20. a rocker control bending piece; 21. a rocker part; 211. a rod body; 212. a handle; 213. skirtboard; 22. a bending control part; 2201. a ball cavity; 2202. pulling the channel; 2203. a clamping groove; 221. a cylinder; 2210. a component; 222. hollow ribs; 2. an insertion section; 3. an operation section case; 30. a proximal opening; 31. an upper case; 32. a lower case; 4. a traction wire.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the embodiments of the present utility model, the terms "near" and "far" are relative positional relationships, and when an operator operates an apparatus to treat a target object, the side of the apparatus near the operator is "near" and the side near the target object is "far" along the apparatus.

It will be understood 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 a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present utility model for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are 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 feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in the description of the present utility model includes any and all combinations of one or more of the associated listed items.

Considering that the existing bending control mechanism needs an operator to respectively and accurately operate two knobs to mutually cooperate so that the distal end of the insertion part faces the required angle, great difficulty and challenges are brought to the operation of the operator, and the distal end of the insertion part cannot be regulated and controlled rapidly and accurately. In order to solve the problem, the utility model provides a rocker bending control mechanism, an endoscopic operation part and an endoscope, which can solve the problem that the distal end direction of an insertion part is difficult to be conveniently and accurately regulated in the prior art.

Referring specifically to fig. 1 to 7, one embodiment of the present utility model provides an endoscope, which may include an insertion portion 2 and an endoscopic manipulation portion connected to a proximal end of the insertion portion 2; the operation portion for endoscopic use may include an operation portion housing 3, a rocker bending control mechanism 1 correspondingly disposed on the operation portion housing 3, and a plurality of traction wires 4 extending from the rocker bending control mechanism 1 to the distal end of the insertion portion 2, so as to control the distal end of the insertion portion 2 to turn by pulling the traction wires 4 by the rocker bending control mechanism 1, such that the distal end of the insertion portion 2 faces a desired angle. It will be appreciated that the insertion portion 2 of the present utility model is provided with a front end portion, a bent portion, and a flexible tube portion in succession from far to near; the operation portion for endoscopic use of the present utility model may further include an operation body (not shown in the drawings) provided to the operation portion case 3 to perform a corresponding endoscopic operation by the operation body. Furthermore, the distal end of the insertion portion 2 referred to in the present utility model refers to an end remote from the operation portion housing 3.

More specifically, as shown in fig. 2 to 7, the rocker control bending mechanism 1 of the present utility model may include a limit support 10 for fixedly provided to the operation portion housing 3 and a rocker control bending member 20 for movably provided to the operation portion housing 3; the rocker bending control piece 20 comprises a rocker part 21 and a bending control part 22 which is used for being fixedly connected with a plurality of traction wires 4 in a staggered manner; the bending control part 22 can be sleeved on the limit support 10 in a fixed-point rotating manner, and the bending control part 22 is fixedly connected with the rocker part 21 so as to perform rotary swinging motion relative to the limit support 10 under the drive of the rocker part 21 and is used for pulling the traction wire 4 to control the bending of the insertion part 2, so that the distal end of the insertion part 2 faces to a required angle.

It should be noted that, as shown in fig. 7, when the insertion portion 2 needs to be manipulated to bend to steer the distal end of the insertion portion 2, an operator only needs to toggle the rocker portion 21 relative to the operation portion housing 3, so as to drive the bending control portion 22 to do a swinging motion relative to the limit support 10, and further pull the different pull wires 4 to control the insertion portion 2 to bend towards any direction, so that the distal end of the insertion portion 2 can face any angle; in other words, the operator can precisely regulate the distal end direction of the insertion portion 2 by simply pulling the rocker portion 21 with one hand, without separately operating the two knobs as in the prior art, which helps to reduce the difficulty of operation, and facilitates rapid and precise regulation of the desired angle of the distal end direction of the insertion portion 2.

Illustratively, as shown in fig. 1 and 6, the limit support 10 is fixedly installed within the operating portion housing 3; the rocker portion 21 of the rocker control bender 20 protrudes out of the operating portion housing 3 through the proximal opening 30 of the operating portion housing 3 so that an operator dials the rocker portion 21 back and forth and left and right outside the operating portion housing 3 to effect bending of the insertion portion 2 in the back and forth and left and right directions. It will be appreciated that the reference to the proximal opening 30 in the present utility model refers to an opening that opens on the end face of the handle housing 3 remote from the insertion portion 2; that is, the distal end of the operating portion housing 3 is connected to the proximal end of the insertion portion 2; the proximal end of the operating section housing 3 and the distal end of the insertion section 2 are located at opposite ends of the endoscope, respectively.

It should be noted that, since the clockwise and/or counterclockwise rotation of the two knobs in the existing bending control mechanism corresponds to the bending of the insertion portion 2 in the front-back and left-right directions, when the operator uses the existing bending control mechanism, the operator needs to convert the bending direction of the insertion portion 2 (i.e. the required angle of the distal end orientation) into the rotation direction of the corresponding knob, so as to accurately rotate the corresponding knob to complete the bending control operation, which increases the operation difficulty, and increases the difficulty of the operator to get up the hand. The poking direction of the rocker part 21 in the rocker bending control mechanism 1 can correspond to the bending direction of the insertion part 2, and an operator can realize the corresponding bending of the insertion part 2 only by poking the rocker part 21 to the corresponding direction when using the rocker bending control mechanism 1, so that the operation difficulty is greatly reduced, and the operator can conveniently get on hand.

Alternatively, as shown in fig. 3 and 6, the limit support 10 may include a ball portion 11 and a tail portion 12 protruding outwardly from the ball portion 11; the tail section 12 is fixed to the operation section case 3 to suspend the ball section 11 with respect to the operation section case 3; the ball head 11 is spherically matched with the bending control part 22 so that the bending control part 22 rotates around the ball center of the ball head 11.

Alternatively, as shown in fig. 4, 5 and 6, the bending control portion 22 of the rocker bending control member 20 may have a ball cavity 2201 adapted to the ball head 11 and a plurality of traction channels 2202 for receiving the traction wires 4 in a one-to-one correspondence; a plurality of pull channels 2202 are spaced around the ball cavity 2201; the ball head 11 of the limit support 10 is rollably inserted into the ball cavity 2201 of the bending control portion 22, so that the outer wall surface of the ball head 11 and the inner wall surface of the ball cavity 2201 are in spherical fit, and the bending control portion 22 is limited to translate through the ball head 11. Therefore, when the rocker portion 21 is shifted, the bending control portion 22 only rotates around the center of the ball 11 under the driving of the rocker portion 21, but does not translate relative to the ball 11, which is helpful for accurate bending control.

Alternatively, as shown in FIGS. 5 and 7, the opening diameter of the cavity 2201 is smaller than the outer diameter of the ball head 11 to prevent the ball head 11 from backing out of the cavity 2201.

Preferably, the inner diameter of the cavity 2201 is equal to the outer diameter of the head 11, so as to ensure that the inner wall surface of the cavity 2201 is tightly attached to the outer wall surface of the head 11, and avoid loosening or shaking of the bending control part 22 relative to the head 11, so as to accurately control bending.

Alternatively, as shown in fig. 3 and 5, the bending control portion 22 may include a cylindrical body 221 and a plurality of hollow ribs 222 circumferentially arranged on the cylindrical body 221; the distal end of the cylinder 221 is axially recessed to form a ball cavity 2201, and the proximal end of the cylinder 221 is fixedly connected to the rocker portion 21; each hollow rib 222 extends axially on the outer peripheral surface of the cylindrical body 221 to provide a pulling channel 2202, facilitating corresponding placement between the ball cavity 2201 and the pulling channel 2202, reducing manufacturing difficulty and cost of the rocker control bender 20.

Alternatively, the plurality of hollow ribs 222 are uniformly distributed on the outer circumferential surface of the cylindrical body 221 so as to control the insertion portion 2 to be correspondingly bent in opposite directions. For example, the number of the hollow ribs 222 of the bending control portion 22 is four to form four traction channels 2202 on the front, rear, left and right of the cylindrical body 221 to correspondingly draw the four traction wires 4 to more flexibly control the bending of the insertion portion 2 in each direction.

Alternatively, as shown in fig. 3 to 5, hollow ribs 222 are integrally protruded to the outer circumferential surface of the cylindrical body 221; that is, the hollow ribs 222 integrally protrude outward from the outer circumferential surface of the cylinder 221 to increase the distance between the plurality of drawing channels 2202 while enhancing the structural strength of the cylinder 221, so as to draw the corresponding drawing lines more greatly to increase the degree of bending of the insertion portion 2.

Optionally, as shown in fig. 5 and 6, the proximal end of the cylindrical body 221 is axially recessed to form a clamping groove 2203 corresponding to the pulling channel 2202, and the clamping groove 2203 is used for clamping the proximal end of the pull wire 4 so as to detachably and fixedly connect the proximal end of the pull wire 4 with the bending control portion 22. Thus, when the proximal end of the pull wire 4 is engaged with the engagement groove 2203, the distal end of the pull wire 4 is fixedly connected to the distal end of the insertion portion 2 after passing through the corresponding pulling channel 2202, so as to control the bending of the insertion portion 2 by pulling the pull wire 4 through the bending control portion 22.

It should be noted that, as shown in fig. 6, the proximal end of the pull wire 4 is provided with a clamping block for clamping into the clamping groove 2203, the inner diameter of the pull channel 2202 is larger than the wire body of the pull wire 4 and smaller than the clamping block, so as to prevent the clamping block from entering the pull channel 2202 while allowing the distal end of the pull wire 4 to pass through the pull channel 2202, and prevent the proximal end of the pull wire 4 from being separated from the bending control portion 22, so that after the distal end of the pull wire 4 is fixedly connected with the distal end of the insertion portion 2, the clamping block is clamped into the corresponding clamping groove 2203 to tighten the corresponding pull wire 4.

In addition, as shown in fig. 4 and 5, the cylinder 221 of the bending control portion 22 may be assembled and fixedly connected by at least two components 2210, so as to embed the ball head 11 of the limit support 10 into the ball cavity 2201 of the bending control portion 22, and facilitate fixing the rocker portion 21 to the bending control portion 22. For example, the cylinder 221 is axially split into two or more pieces 2210, such that after the outer Zhou Pinzhuang piece 2210 of the ball portion 11 forms the ball cavity 2201 in which the ball portion 11 is received, the two or more pieces 2210 can be assembled into the bending control portion 22 by fixedly connecting them.

It can be appreciated that the spherical fit between the ball head 11 and the ball cavity 2201 can limit the translation of the bending control part 22 relative to the limit support 10 in all directions, and only allow the bending control part 22 to perform fixed-point rotation relative to the limit support 10; meanwhile, the plurality of traction wires 4 can also limit the bending control part 22 to rotate around the central axis of the cylinder 221 relative to the limiting support piece 10 to a certain extent, so that when the bending control part 22 rotates at a fixed point relative to the limiting support piece 10, one part of traction wires can be tensioned, the other part of traction wires can be loosened, and the precise bending control of the insertion part 2 is ensured, so that the distal end orientation of the insertion part 2 is accurately regulated.

According to the above-described embodiment of the present utility model, as shown in fig. 2 and 3, the rocker portion 21 of the rocker control bender 20 includes a rod body 211 protruding from the proximal end opening 30 of the operating portion housing 3 and a handle 212 located outside the operating portion housing 3, the distal end of the rod body 211 is fixedly connected to the proximal end of the cylinder 221 of the control bender 22, and the proximal end of the rod body 211 is connected to the handle 212; in other words, the rod body 211 extends axially from the proximal end of the cylindrical body 221 to be connected to the handle 212 after passing through the proximal opening 30 of the operating portion housing 3, so that an operator can pull the rocker control bending member 20 by holding the handle 212 in a labor-saving manner, so that the control bending portion 22 performs fixed-point rotation. It is understood that the peripheral edge of the proximal end opening 30 of the operating portion housing 3 can limit the rotational amplitude of the lever body 211 to some extent.

Notably, the handle 212 may be implemented as, but is not limited to, a ball handle. It will be appreciated that the length of the rod body 211 in the rocker bending member 20 of the present utility model is longer than that of the knob in the conventional bending control mechanism, such that the distance between the handle 212 and the center of the ball cavity 2201 is much longer than that between the pulling channel 2202 and the center of the ball cavity 2201, i.e. the power arm of the rocker bending control mechanism 1 is much longer than the resistance arm thereof, so as to form a labor-saving lever, which is helpful for an operator to control the bending of the insertion portion 2 in a labor-saving manner.

Optionally, as shown in fig. 3 and 6, the rocker portion 21 may further include a skirt 213, where the skirt 213 is sleeved on the rod 211, so as to cover the proximal opening 30 of the operating portion housing 3, thereby playing a role of shielding against dust and ugly.

Alternatively, as shown in fig. 5, skirt 213 is secured to rod body 211. For example, the distance between the skirt 213 and the bend control portion 22 is larger than the distance between the proximal opening 30 of the handle housing 3 and the bend control portion 22, and the size of the skirt 213 is larger than the size of the proximal opening 30, so that the skirt 213 is located outside the handle housing 3. It will be appreciated that the skirt 213 of the present utility model may be made of a hard material, such as plastic or metal, so that the skirt 213 covers the proximal opening 30 to cover the user's head and dust, and also limits the toggle angle of the rocker 21, and thus the rotation angle of the bending control 22, so as to prevent the pull wire 4 from being pulled out due to the excessive rotation angle of the bending control 22. In addition, the skirt 213 of the present utility model may be made of a flexible material such as silicone or rubber to provide better shielding from dust.

It is noted that, as shown in fig. 6 and 7, the skirt 213 may be implemented as a planar ring plate or a cambered ring plate so as to guide the rotation of the rod body 211 by means of the annular outer periphery of the skirt 213, so that the rotation of the bending control portion 22 is smoother.

According to the above-described embodiment of the present utility model, as shown in fig. 1 and 2, the operating portion housing 3 may include an upper case 31 and a lower case 32, and the lower case 32 may be detachably coupled to the upper case 31 to wrap the spacing support 10 and the bending control portion 22 between the upper case 31 and the lower case 32 for protection.

Optionally, the upper shell 31 and the lower shell 32 have proximal notches, respectively, so that when the lower shell 32 is detachably connected to the upper shell 31, the two proximal notches correspondingly communicate to form a proximal opening 30, so as to facilitate the movable mounting of the rocker control bending member 20 to the operating portion housing 3.

The technical features of the above embodiments may be combined without changing the basic principle of the present utility model, and for brevity of description, all possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims (13)

1. The bent mechanism of rocker accuse for endoscope, its characterized in that includes:

a limit support for being fixedly provided to an operation portion housing of the endoscope; and

the rocker control bending piece is used for being movably arranged on the operating part shell; the rocker bending control piece comprises a rocker part and a bending control part, wherein the bending control part is used for fixedly connecting a plurality of traction wires of the endoscope in a staggered manner; the bending control part is fixedly connected with the rocker part, so as to perform rotary swinging motion relative to the limiting support part under the drive of the rocker part, and the bending control part is used for driving the traction wire to control the bending of the insertion part of the endoscope.

2. The rocker bending mechanism according to claim 1, wherein said limit support comprises a ball portion and a tail portion projecting outwardly from said ball portion, said tail portion being adapted to be secured to the operator housing to suspend said ball portion relative to the operator housing; the ball head part is in spherical fit with the bending control part, so that the bending control part rotates around the spherical center of the ball head part.

3. The rocker bending control mechanism according to claim 2, wherein the bending control part is provided with a ball cavity matched with the ball head part and a plurality of traction channels for accommodating the traction wires in a one-to-one correspondence manner; the plurality of traction channels are distributed around the ball cavity at intervals, and the ball head part can be embedded into the ball cavity of the bending control part in a rolling way.

4. The rocker bending mechanism according to claim 3, wherein the opening diameter of said ball cavity is smaller than the outer diameter of said ball head; the inner diameter of the ball cavity is equal to the outer diameter of the ball head part.

5. The rocker bending control mechanism according to claim 3, wherein the bending control portion comprises a cylinder and a plurality of hollow ribs circumferentially arranged on the cylinder; the far end of the cylinder is axially recessed to form the ball cavity, and the near end of the cylinder is fixedly connected with the rocker part; each of the hollow ribs extends axially on the outer peripheral surface of the cylinder to provide the pulling channel.

6. The rocker bending mechanism according to claim 5, wherein a plurality of said hollow ribs are uniformly distributed on the outer peripheral surface of said cylindrical body.

7. The rocker bending control mechanism according to claim 6, wherein the hollow rib is integrally formed protruding from the outer circumferential surface of the cylinder.

8. The rocker bending mechanism according to claim 5, wherein the proximal end of the cylinder is axially recessed to form a clamping groove corresponding to the pull channel for clamping the proximal end of the pull wire.

9. The rocker bending control mechanism according to claim 5, wherein said cylinder is assembled and fixedly connected from at least two parts.

10. The rocker bending mechanism according to any one of claims 1 to 9, wherein the rocker portion includes a lever body for protruding from a proximal opening of the operator housing and a handle for outside the operator housing; the distal end of the rod body is fixedly connected with the bending control part, and the proximal end of the rod body is connected with the handle.

11. The rocker bending mechanism of claim 10, wherein the rocker portion further comprises a skirt panel, the skirt panel being nested within the lever body for covering the proximal opening of the handle portion housing; the apron board is a plane annular plate or a cambered surface annular plate fixedly arranged on the rod body.

12. An operation unit for endoscopic use, comprising:

an operation section case; and

the rocker bending control mechanism according to any one of claims 1 to 11, which is correspondingly provided to the operating portion housing.

13. An endoscope, comprising:

an operation portion for endoscope including an operation portion case and the rocker bending control mechanism according to any one of claims 1 to 11, the rocker bending control mechanism being provided correspondingly to the operation portion case;

an insertion portion, a proximal end of which is connected to the endoscopic operation portion; and

the traction wires extend from the rocker bending control mechanism to the distal end of the insertion part, so that the rocker bending control mechanism pulls the traction wires to control the distal end of the insertion part to steer.